diff options
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_accessibility.cc | 4 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_accessibility.h | 16 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_edit.cc | 1934 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_edit.h | 501 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_edit_view.h | 117 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_edit_view_win.cc | 2185 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/autocomplete_edit_view_win.h | 458 | ||||
| -rwxr-xr-x | chrome/browser/autocomplete/autocomplete_popup_view_win.cc | 2 | ||||
| -rwxr-xr-x | chrome/browser/autocomplete/autocomplete_popup_view_win.h | 11 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/edit_drop_target.cc | 152 | ||||
| -rw-r--r-- | chrome/browser/autocomplete/edit_drop_target.h | 58 | ||||
| -rw-r--r-- | chrome/browser/automation/automation_autocomplete_edit_tracker.h | 1 | ||||
| -rw-r--r-- | chrome/browser/browser.vcproj | 18 | ||||
| -rw-r--r-- | chrome/browser/views/location_bar_view.cc | 8 | ||||
| -rw-r--r-- | chrome/browser/views/location_bar_view.h | 3 |
15 files changed, 2806 insertions, 2662 deletions
diff --git a/chrome/browser/autocomplete/autocomplete_accessibility.cc b/chrome/browser/autocomplete/autocomplete_accessibility.cc index 5d61fab..807be73 100644 --- a/chrome/browser/autocomplete/autocomplete_accessibility.cc +++ b/chrome/browser/autocomplete/autocomplete_accessibility.cc @@ -4,13 +4,15 @@ #include "chrome/browser/autocomplete/autocomplete_accessibility.h" +#include "chrome/browser/autocomplete/autocomplete_edit.h" +#include "chrome/browser/autocomplete/autocomplete_edit_view_win.h" #include "chrome/common/l10n_util.h" #include "chrome/views/accessibility/accessible_wrapper.h" #include "chrome/views/view.h" #include "grit/generated_resources.h" HRESULT AutocompleteAccessibility::Initialize( - const AutocompleteEditView* edit_box) { + const AutocompleteEditViewWin* edit_box) { if (edit_box == NULL) { return E_INVALIDARG; } diff --git a/chrome/browser/autocomplete/autocomplete_accessibility.h b/chrome/browser/autocomplete/autocomplete_accessibility.h index cd5f970..8671c1f 100644 --- a/chrome/browser/autocomplete/autocomplete_accessibility.h +++ b/chrome/browser/autocomplete/autocomplete_accessibility.h @@ -7,18 +7,19 @@ #include <atlbase.h> #include <atlcom.h> - #include <oleacc.h> -#include "chrome/browser/autocomplete/autocomplete_edit.h" +#include "base/basictypes.h" + +class AutocompleteEditViewWin; //////////////////////////////////////////////////////////////////////////////// // // AutocompleteAccessibility // // Class implementing the MSAA IAccessible COM interface for -// AutocompleteEditView, providing accessibility to be used by screen readers -// and other assistive technology (AT). +// AutocompleteEditViewWin, providing accessibility to be used by screen +// readers and other assistive technology (AT). // //////////////////////////////////////////////////////////////////////////////// class ATL_NO_VTABLE AutocompleteAccessibility @@ -33,7 +34,7 @@ class ATL_NO_VTABLE AutocompleteAccessibility AutocompleteAccessibility() {} ~AutocompleteAccessibility() {} - HRESULT Initialize(const AutocompleteEditView* edit_box); + HRESULT Initialize(const AutocompleteEditViewWin* edit_box); // Supported IAccessible methods. @@ -105,8 +106,9 @@ class ATL_NO_VTABLE AutocompleteAccessibility CComPtr<IAccessible> default_accessibility_server_; private: - const AutocompleteEditView* edit_box_; + const AutocompleteEditViewWin* edit_box_; - DISALLOW_EVIL_CONSTRUCTORS(AutocompleteAccessibility); + DISALLOW_COPY_AND_ASSIGN(AutocompleteAccessibility); }; + #endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_ACCESSIBILITY_H_ diff --git a/chrome/browser/autocomplete/autocomplete_edit.cc b/chrome/browser/autocomplete/autocomplete_edit.cc index 3a0f56b..9d3d843a 100644 --- a/chrome/browser/autocomplete/autocomplete_edit.cc +++ b/chrome/browser/autocomplete/autocomplete_edit.cc @@ -6,11 +6,8 @@ #include <locale> -#include "base/base_drag_source.h" +// TODO(deanm): Cleanup these includes. #include "base/basictypes.h" -#include "base/clipboard.h" -#include "base/iat_patch.h" -#include "base/lazy_instance.h" #include "base/ref_counted.h" #include "base/scoped_clipboard_writer.h" #include "base/string_util.h" @@ -31,18 +28,12 @@ #include "chrome/browser/tab_contents/tab_contents.h" #include "chrome/browser/views/location_bar_view.h" #include "chrome/common/clipboard_service.h" -#include "chrome/common/gfx/chrome_canvas.h" -#include "chrome/common/gfx/utils.h" -#include "chrome/common/l10n_util.h" -#include "chrome/common/l10n_util_win.h" #include "chrome/common/notification_service.h" #include "chrome/common/os_exchange_data.h" #include "chrome/common/win_util.h" #include "googleurl/src/url_util.h" #include "grit/generated_resources.h" -#include "skia/ext/skia_utils_win.h" - -#pragma comment(lib, "oleacc.lib") // Needed for accessibility support. +#include "skia/include/SkBitmap.h" /////////////////////////////////////////////////////////////////////////////// // AutocompleteEditModel @@ -309,11 +300,7 @@ void AutocompleteEditModel::SendOpenNotification(size_t selected_line, void AutocompleteEditModel::AcceptKeyword() { view_->OnBeforePossibleChange(); - // NOTE: We don't need the IME composition hack in SetWindowTextAndCaretPos() - // here, because any active IME composition will eat <tab> characters, - // preventing the user from using tab-to-search until the composition is - // ended. - view_->SetWindowText(L""); + view_->SetWindowTextAndCaretPos(std::wstring(), 0); is_keyword_hint_ = false; keyword_ui_state_ = KEYWORD; view_->OnAfterPossibleChange(); @@ -581,1918 +568,3 @@ GURL AutocompleteEditModel::GetURLForCurrentText( is_history_what_you_typed_match, alternate_nav_url); } - -/////////////////////////////////////////////////////////////////////////////// -// Helper classes - -AutocompleteEditView::ScopedFreeze::ScopedFreeze( - AutocompleteEditView* edit, - ITextDocument* text_object_model) - : edit_(edit), - text_object_model_(text_object_model) { - // Freeze the screen. - if (text_object_model_) { - long count; - text_object_model_->Freeze(&count); - } -} - -AutocompleteEditView::ScopedFreeze::~ScopedFreeze() { - // Unfreeze the screen. - // NOTE: If this destructor is reached while the edit is being destroyed (for - // example, because we double-clicked the edit of a popup and caused it to - // transform to an unconstrained window), it will no longer have an HWND, and - // text_object_model_ may point to a destroyed object, so do nothing here. - if (edit_->IsWindow() && text_object_model_) { - long count; - text_object_model_->Unfreeze(&count); - if (count == 0) { - // We need to UpdateWindow() here instead of InvalidateRect() because, as - // far as I can tell, the edit likes to synchronously erase its background - // when unfreezing, thus requiring us to synchronously redraw if we don't - // want flicker. - edit_->UpdateWindow(); - } - } -} - -AutocompleteEditView::ScopedSuspendUndo::ScopedSuspendUndo( - ITextDocument* text_object_model) - : text_object_model_(text_object_model) { - // Suspend Undo processing. - if (text_object_model_) - text_object_model_->Undo(tomSuspend, NULL); -} - -AutocompleteEditView::ScopedSuspendUndo::~ScopedSuspendUndo() { - // Resume Undo processing. - if (text_object_model_) - text_object_model_->Undo(tomResume, NULL); -} - -/////////////////////////////////////////////////////////////////////////////// -// AutocompleteEditView - -// TODO (jcampan): these colors should be derived from the system colors to -// ensure they show properly. Bug #948807. -// Colors used to emphasize the scheme in the URL. - -namespace { - -const COLORREF kSecureSchemeColor = RGB(0, 150, 20); -const COLORREF kInsecureSchemeColor = RGB(200, 0, 0); - -// Colors used to strike-out the scheme when it is insecure. -const SkColor kSchemeStrikeoutColor = SkColorSetRGB(210, 0, 0); -const SkColor kSchemeSelectedStrikeoutColor = - SkColorSetRGB(255, 255, 255); - -// These are used to hook the CRichEditCtrl's calls to BeginPaint() and -// EndPaint() and provide a memory DC instead. See OnPaint(). -HWND edit_hwnd = NULL; -PAINTSTRUCT paint_struct; - -HDC BeginPaintIntercept(HWND hWnd, LPPAINTSTRUCT lpPaint) { - if (!edit_hwnd || (hWnd != edit_hwnd)) - return ::BeginPaint(hWnd, lpPaint); - - *lpPaint = paint_struct; - return paint_struct.hdc; -} - -BOOL EndPaintIntercept(HWND hWnd, const PAINTSTRUCT* lpPaint) { - return (edit_hwnd && (hWnd == edit_hwnd)) ? - true : ::EndPaint(hWnd, lpPaint); -} - -// Returns a lazily initialized property bag accessor for saving our state in a -// TabContents. -PropertyAccessor<AutocompleteEditState>* GetStateAccessor() { - static PropertyAccessor<AutocompleteEditState> state; - return &state; -} - -class PaintPatcher { - public: - PaintPatcher() : refcount_(0) { } - ~PaintPatcher() { DCHECK(refcount_ == 0); } - - void RefPatch() { - if (refcount_ == 0) { - DCHECK(!begin_paint_.is_patched()); - DCHECK(!end_paint_.is_patched()); - begin_paint_.Patch(L"riched20.dll", "user32.dll", "BeginPaint", - &BeginPaintIntercept); - end_paint_.Patch(L"riched20.dll", "user32.dll", "EndPaint", - &EndPaintIntercept); - } - ++refcount_; - } - - void DerefPatch() { - DCHECK(begin_paint_.is_patched()); - DCHECK(end_paint_.is_patched()); - --refcount_; - if (refcount_ == 0) { - begin_paint_.Unpatch(); - end_paint_.Unpatch(); - } - } - - private: - size_t refcount_; - iat_patch::IATPatchFunction begin_paint_; - iat_patch::IATPatchFunction end_paint_; - - DISALLOW_COPY_AND_ASSIGN(PaintPatcher); -}; - -base::LazyInstance<PaintPatcher> g_paint_patcher(base::LINKER_INITIALIZED); - -} // namespace - -AutocompleteEditView::AutocompleteEditView( - const ChromeFont& font, - AutocompleteEditController* controller, - ToolbarModel* toolbar_model, - views::View* parent_view, - HWND hwnd, - Profile* profile, - CommandUpdater* command_updater, - bool popup_window_mode) - : model_(new AutocompleteEditModel(this, controller, profile)), - popup_view_(new AutocompletePopupViewWin(font, this, model_.get(), - profile)), - controller_(controller), - parent_view_(parent_view), - toolbar_model_(toolbar_model), - command_updater_(command_updater), - popup_window_mode_(popup_window_mode), - tracking_click_(false), - tracking_double_click_(false), - double_click_time_(0), - can_discard_mousemove_(false), - font_(font), - possible_drag_(false), - in_drag_(false), - initiated_drag_(false), - drop_highlight_position_(-1), - background_color_(0), - scheme_security_level_(ToolbarModel::NORMAL) { - model_->set_popup_model(popup_view_->model()); - - saved_selection_for_focus_change_.cpMin = -1; - - g_paint_patcher.Pointer()->RefPatch(); - - Create(hwnd, 0, 0, 0, l10n_util::GetExtendedStyles()); - SetReadOnly(popup_window_mode_); - SetFont(font_.hfont()); - - // NOTE: Do not use SetWordBreakProcEx() here, that is no longer supported as - // of Rich Edit 2.0 onward. - SendMessage(m_hWnd, EM_SETWORDBREAKPROC, 0, - reinterpret_cast<LPARAM>(&WordBreakProc)); - - // Get the metrics for the font. - HDC dc = ::GetDC(NULL); - SelectObject(dc, font_.hfont()); - TEXTMETRIC tm = {0}; - GetTextMetrics(dc, &tm); - font_ascent_ = tm.tmAscent; - const float kXHeightRatio = 0.7f; // The ratio of a font's x-height to its - // cap height. Sadly, Windows doesn't - // provide a true value for a font's - // x-height in its text metrics, so we - // approximate. - font_x_height_ = static_cast<int>((static_cast<float>(font_ascent_ - - tm.tmInternalLeading) * kXHeightRatio) + 0.5); - // The distance from the top of the field to the desired baseline of the - // rendered text. - const int kTextBaseline = popup_window_mode_ ? 15 : 18; - font_y_adjustment_ = kTextBaseline - font_ascent_; - font_descent_ = tm.tmDescent; - - // Get the number of twips per pixel, which we need below to offset our text - // by the desired number of pixels. - const long kTwipsPerPixel = kTwipsPerInch / GetDeviceCaps(dc, LOGPIXELSY); - ::ReleaseDC(NULL, dc); - - // Set the default character style -- adjust to our desired baseline and make - // text grey. - CHARFORMAT cf = {0}; - cf.dwMask = CFM_OFFSET | CFM_COLOR; - cf.yOffset = -font_y_adjustment_ * kTwipsPerPixel; - cf.crTextColor = GetSysColor(COLOR_GRAYTEXT); - SetDefaultCharFormat(cf); - - // Set up context menu. - context_menu_.reset(new Menu(this, Menu::TOPLEFT, m_hWnd)); - if (popup_window_mode_) { - context_menu_->AppendMenuItemWithLabel(IDS_COPY, - l10n_util::GetString(IDS_COPY)); - } else { - context_menu_->AppendMenuItemWithLabel(IDS_UNDO, - l10n_util::GetString(IDS_UNDO)); - context_menu_->AppendSeparator(); - context_menu_->AppendMenuItemWithLabel(IDS_CUT, - l10n_util::GetString(IDS_CUT)); - context_menu_->AppendMenuItemWithLabel(IDS_COPY, - l10n_util::GetString(IDS_COPY)); - context_menu_->AppendMenuItemWithLabel(IDS_PASTE, - l10n_util::GetString(IDS_PASTE)); - // GetContextualLabel() will override this next label with the - // IDS_PASTE_AND_SEARCH label as needed. - context_menu_->AppendMenuItemWithLabel( - IDS_PASTE_AND_GO, l10n_util::GetString(IDS_PASTE_AND_GO)); - context_menu_->AppendSeparator(); - context_menu_->AppendMenuItemWithLabel( - IDS_SELECT_ALL, l10n_util::GetString(IDS_SELECT_ALL)); - context_menu_->AppendSeparator(); - context_menu_->AppendMenuItemWithLabel( - IDS_EDIT_SEARCH_ENGINES, l10n_util::GetString(IDS_EDIT_SEARCH_ENGINES)); - } - - // By default RichEdit has a drop target. Revoke it so that we can install our - // own. Revoke takes care of deleting the existing one. - RevokeDragDrop(m_hWnd); - - // Register our drop target. RichEdit appears to invoke RevokeDropTarget when - // done so that we don't have to explicitly. - if (!popup_window_mode_) { - scoped_refptr<EditDropTarget> drop_target = new EditDropTarget(this); - RegisterDragDrop(m_hWnd, drop_target.get()); - } -} - -AutocompleteEditView::~AutocompleteEditView() { - NotificationService::current()->Notify( - NotificationType::AUTOCOMPLETE_EDIT_DESTROYED, - Source<AutocompleteEditView>(this), - NotificationService::NoDetails()); - - // We balance our reference count and unpatch when the last instance has - // been destroyed. This prevents us from relying on the AtExit or static - // destructor sequence to do our unpatching, which is generally fragile. - g_paint_patcher.Pointer()->DerefPatch(); -} - -void AutocompleteEditView::SaveStateToTab(TabContents* tab) { - DCHECK(tab); - - const AutocompleteEditModel::State model_state( - model_->GetStateForTabSwitch()); - - CHARRANGE selection; - GetSelection(selection); - GetStateAccessor()->SetProperty(tab->property_bag(), - AutocompleteEditState( - model_state, - State(selection, saved_selection_for_focus_change_))); -} - -void AutocompleteEditView::Update(const TabContents* tab_for_state_restoring) { - const bool visibly_changed_permanent_text = - model_->UpdatePermanentText(toolbar_model_->GetText()); - - const ToolbarModel::SecurityLevel security_level = - toolbar_model_->GetSchemeSecurityLevel(); - const COLORREF background_color = - LocationBarView::kBackgroundColorByLevel[security_level]; - const bool changed_security_level = - (security_level != scheme_security_level_); - - // Bail early when no visible state will actually change (prevents an - // unnecessary ScopedFreeze, and thus UpdateWindow()). - if ((background_color == background_color_) && !changed_security_level && - !visibly_changed_permanent_text && !tab_for_state_restoring) - return; - - // Update our local state as desired. We set scheme_security_level_ here so - // it will already be correct before we get to any RevertAll()s below and use - // it. - ScopedFreeze freeze(this, GetTextObjectModel()); - if (background_color_ != background_color) { - background_color_ = background_color; - SetBackgroundColor(background_color_); - } - scheme_security_level_ = security_level; - - // When we're switching to a new tab, restore its state, if any. - if (tab_for_state_restoring) { - // Make sure we reset our own state first. The new tab may not have any - // saved state, or it may not have had input in progress, in which case we - // won't overwrite all our local state. - RevertAll(); - - const AutocompleteEditState* state = GetStateAccessor()->GetProperty( - tab_for_state_restoring->property_bag()); - if (state) { - model_->RestoreState(state->model_state); - - // Restore user's selection. We do this after restoring the user_text - // above so we're selecting in the correct string. - SetSelectionRange(state->view_state.selection); - saved_selection_for_focus_change_ = - state->view_state.saved_selection_for_focus_change; - } - } else if (visibly_changed_permanent_text) { - // Not switching tabs, just updating the permanent text. (In the case where - // we _were_ switching tabs, the RevertAll() above already drew the new - // permanent text.) - - // Tweak: if the edit was previously nonempty and had all the text selected, - // select all the new text. This makes one particular case better: the - // user clicks in the box to change it right before the permanent URL is - // changed. Since the new URL is still fully selected, the user's typing - // will replace the edit contents as they'd intended. - // - // NOTE: The selection can be longer than the text length if the edit is in - // in rich text mode and the user has selected the "phantom newline" at the - // end, so use ">=" instead of "==" to see if all the text is selected. In - // theory we prevent this case from ever occurring, but this is still safe. - CHARRANGE sel; - GetSelection(sel); - const bool was_reversed = (sel.cpMin > sel.cpMax); - const bool was_sel_all = (sel.cpMin != sel.cpMax) && - IsSelectAllForRange(sel); - - RevertAll(); - - if (was_sel_all) - SelectAll(was_reversed); - } else if (changed_security_level) { - // Only the security style changed, nothing else. Redraw our text using it. - EmphasizeURLComponents(); - } -} - -void AutocompleteEditView::OpenURL(const GURL& url, - WindowOpenDisposition disposition, - PageTransition::Type transition, - const GURL& alternate_nav_url, - size_t selected_line, - const std::wstring& keyword) { - if (!url.is_valid()) - return; - - model_->SendOpenNotification(selected_line, keyword); - - ScopedFreeze freeze(this, GetTextObjectModel()); - if (disposition != NEW_BACKGROUND_TAB) - RevertAll(); // Revert the box to its unedited state - controller_->OnAutocompleteAccept(url, disposition, transition, - alternate_nav_url); -} - -std::wstring AutocompleteEditView::GetText() const { - const int len = GetTextLength() + 1; - std::wstring str; - GetWindowText(WriteInto(&str, len), len); - return str; -} - -void AutocompleteEditView::SetUserText(const std::wstring& text, - const std::wstring& display_text, - bool update_popup) { - ScopedFreeze freeze(this, GetTextObjectModel()); - model_->SetUserText(text); - saved_selection_for_focus_change_.cpMin = -1; - SetWindowTextAndCaretPos(display_text, display_text.length()); - if (update_popup) - UpdatePopup(); - TextChanged(); -} - -void AutocompleteEditView::SetWindowTextAndCaretPos(const std::wstring& text, - size_t caret_pos) { - HIMC imm_context = ImmGetContext(m_hWnd); - if (imm_context) { - // In Windows Vista, SetWindowText() automatically completes any ongoing - // IME composition, and updates the text of the underlying edit control. - // In Windows XP, however, SetWindowText() gets applied to the IME - // composition string if it exists, and doesn't update the underlying edit - // control. To avoid this, we force the IME to complete any outstanding - // compositions here. This is harmless in Vista and in cases where the IME - // isn't composing. - ImmNotifyIME(imm_context, NI_COMPOSITIONSTR, CPS_COMPLETE, 0); - ImmReleaseContext(m_hWnd, imm_context); - } - - SetWindowText(text.c_str()); - PlaceCaretAt(caret_pos); -} - -bool AutocompleteEditView::IsSelectAll() { - CHARRANGE selection; - GetSel(selection); - return IsSelectAllForRange(selection); -} - -void AutocompleteEditView::SelectAll(bool reversed) { - if (reversed) - SetSelection(GetTextLength(), 0); - else - SetSelection(0, GetTextLength()); -} - -void AutocompleteEditView::RevertAll() { - ScopedFreeze freeze(this, GetTextObjectModel()); - ClosePopup(); - model_->Revert(); - saved_selection_for_focus_change_.cpMin = -1; - TextChanged(); -} - -void AutocompleteEditView::UpdatePopup() { - ScopedFreeze freeze(this, GetTextObjectModel()); - model_->SetInputInProgress(true); - - if (!model_->has_focus()) { - // When we're in the midst of losing focus, don't rerun autocomplete. This - // can happen when losing focus causes the IME to cancel/finalize a - // composition. We still want to note that user input is in progress, we - // just don't want to do anything else. - // - // Note that in this case the ScopedFreeze above was unnecessary; however, - // we're inside the callstack of OnKillFocus(), which has already frozen the - // edit, so this will never result in an unnecessary UpdateWindow() call. - return; - } - - // Figure out whether the user is trying to compose something in an IME. - bool ime_composing = false; - HIMC context = ImmGetContext(m_hWnd); - if (context) { - ime_composing = !!ImmGetCompositionString(context, GCS_COMPSTR, NULL, 0); - ImmReleaseContext(m_hWnd, context); - } - - // Don't inline autocomplete when: - // * The user is deleting text - // * The caret/selection isn't at the end of the text - // * The user has just pasted in something that replaced all the text - // * The user is trying to compose something in an IME - CHARRANGE sel; - GetSel(sel); - model_->StartAutocomplete((sel.cpMax < GetTextLength()) || ime_composing); -} - -void AutocompleteEditView::ClosePopup() { - popup_view_->model()->StopAutocomplete(); -} - -IAccessible* AutocompleteEditView::GetIAccessible() { - if (!autocomplete_accessibility_) { - CComObject<AutocompleteAccessibility>* accessibility = NULL; - if (!SUCCEEDED(CComObject<AutocompleteAccessibility>::CreateInstance( - &accessibility)) || !accessibility) - return NULL; - - // Wrap the created object in a smart pointer so it won't leak. - CComPtr<IAccessible> accessibility_comptr(accessibility); - if (!SUCCEEDED(accessibility->Initialize(this))) - return NULL; - - // Copy to the class smart pointer, and notify that an instance of - // IAccessible was allocated for m_hWnd. - autocomplete_accessibility_ = accessibility_comptr; - NotifyWinEvent(EVENT_OBJECT_CREATE, m_hWnd, OBJID_CLIENT, CHILDID_SELF); - } - // Detach to leave ref counting to the caller. - return autocomplete_accessibility_.Detach(); -} - -void AutocompleteEditView::SetDropHighlightPosition(int position) { - if (drop_highlight_position_ != position) { - RepaintDropHighlight(drop_highlight_position_); - drop_highlight_position_ = position; - RepaintDropHighlight(drop_highlight_position_); - } -} - -void AutocompleteEditView::MoveSelectedText(int new_position) { - const std::wstring selected_text(GetSelectedText()); - CHARRANGE sel; - GetSel(sel); - DCHECK((sel.cpMax != sel.cpMin) && (new_position >= 0) && - (new_position <= GetTextLength())); - - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - - // Nuke the selected text. - ReplaceSel(L"", TRUE); - - // And insert it into the new location. - if (new_position >= sel.cpMin) - new_position -= (sel.cpMax - sel.cpMin); - PlaceCaretAt(new_position); - ReplaceSel(selected_text.c_str(), TRUE); - - OnAfterPossibleChange(); -} - -void AutocompleteEditView::InsertText(int position, const std::wstring& text) { - DCHECK((position >= 0) && (position <= GetTextLength())); - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - SetSelection(position, position); - ReplaceSel(text.c_str()); - OnAfterPossibleChange(); -} - -void AutocompleteEditView::OnTemporaryTextMaybeChanged( - const std::wstring& display_text, - bool save_original_selection) { - if (save_original_selection) - GetSelection(original_selection_); - - // Set new text and cursor position. Sometimes this does extra work (e.g. - // when the new text and the old text are identical), but it's only called - // when the user manually changes the selected line in the popup, so that's - // not really a problem. Also, even when the text hasn't changed we'd want to - // update the caret, because if the user had the cursor in the middle of the - // text and then arrowed to another entry with the same text, we'd still want - // to move the caret. - ScopedFreeze freeze(this, GetTextObjectModel()); - SetWindowTextAndCaretPos(display_text, display_text.length()); - TextChanged(); -} - -bool AutocompleteEditView::OnInlineAutocompleteTextMaybeChanged( - const std::wstring& display_text, - size_t user_text_length) { - // Update the text and selection. Because this can be called repeatedly while - // typing, we've careful not to freeze the edit unless we really need to. - // Also, unlike in the temporary text case above, here we don't want to update - // the caret/selection unless we have to, since this might make the user's - // caret position change without warning during typing. - if (display_text == GetText()) - return false; - - ScopedFreeze freeze(this, GetTextObjectModel()); - // NOTE: We don't need the IME composition hack in SetWindowTextAndCaretPos() - // here, because UpdatePopup() disables inline autocomplete when a - // composition is in progress, thus preventing us from reaching this code. - SetWindowText(display_text.c_str()); - // Set a reversed selection to keep the caret in the same position, which - // avoids scrolling the user's text. - SetSelection(static_cast<LONG>(display_text.length()), - static_cast<LONG>(user_text_length)); - TextChanged(); - return true; -} - -void AutocompleteEditView::OnRevertTemporaryText() { - SetSelectionRange(original_selection_); - TextChanged(); -} - -void AutocompleteEditView::OnBeforePossibleChange() { - // Record our state. - text_before_change_ = GetText(); - GetSelection(sel_before_change_); -} - -bool AutocompleteEditView::OnAfterPossibleChange() { - // Prevent the user from selecting the "phantom newline" at the end of the - // edit. If they try, we just silently move the end of the selection back to - // the end of the real text. - CHARRANGE new_sel; - GetSelection(new_sel); - const int length = GetTextLength(); - if ((new_sel.cpMin > length) || (new_sel.cpMax > length)) { - if (new_sel.cpMin > length) - new_sel.cpMin = length; - if (new_sel.cpMax > length) - new_sel.cpMax = length; - SetSelectionRange(new_sel); - } - const bool selection_differs = (new_sel.cpMin != sel_before_change_.cpMin) || - (new_sel.cpMax != sel_before_change_.cpMax); - const bool at_end_of_edit = - (new_sel.cpMin == length) && (new_sel.cpMax == length); - - // See if the text or selection have changed since OnBeforePossibleChange(). - const std::wstring new_text(GetText()); - const bool text_differs = (new_text != text_before_change_); - - // When the user has deleted text, we don't allow inline autocomplete. Make - // sure to not flag cases like selecting part of the text and then pasting - // (or typing) the prefix of that selection. (We detect these by making - // sure the caret, which should be after any insertion, hasn't moved - // forward of the old selection start.) - const bool just_deleted_text = - (text_before_change_.length() > new_text.length()) && - (new_sel.cpMin <= std::min(sel_before_change_.cpMin, - sel_before_change_.cpMax)); - - - const bool something_changed = model_->OnAfterPossibleChange(new_text, - selection_differs, text_differs, just_deleted_text, at_end_of_edit); - - if (something_changed && text_differs) - TextChanged(); - - return something_changed; -} - -void AutocompleteEditView::PasteAndGo(const std::wstring& text) { - if (CanPasteAndGo(text)) - model_->PasteAndGo(); -} - -bool AutocompleteEditView::OverrideAccelerator( - const views::Accelerator& accelerator) { - // Only override <esc>. - if ((accelerator.GetKeyCode() != VK_ESCAPE) || accelerator.IsAltDown()) - return false; - - ScopedFreeze freeze(this, GetTextObjectModel()); - return model_->OnEscapeKeyPressed(); -} - -void AutocompleteEditView::HandleExternalMsg(UINT msg, - UINT flags, - const CPoint& screen_point) { - if (msg == WM_CAPTURECHANGED) { - SendMessage(msg, 0, NULL); - return; - } - - CPoint client_point(screen_point); - ::MapWindowPoints(NULL, m_hWnd, &client_point, 1); - SendMessage(msg, flags, MAKELPARAM(client_point.x, client_point.y)); -} - -bool AutocompleteEditView::IsCommandEnabled(int id) const { - switch (id) { - case IDS_UNDO: return !!CanUndo(); - case IDS_CUT: return !!CanCut(); - case IDS_COPY: return !!CanCopy(); - case IDS_PASTE: return !!CanPaste(); - case IDS_PASTE_AND_GO: return CanPasteAndGo(GetClipboardText()); - case IDS_SELECT_ALL: return !!CanSelectAll(); - case IDS_EDIT_SEARCH_ENGINES: - return command_updater_->IsCommandEnabled(IDC_EDIT_SEARCH_ENGINES); - default: NOTREACHED(); return false; - } -} - -bool AutocompleteEditView::GetContextualLabel(int id, std::wstring* out) const { - if ((id != IDS_PASTE_AND_GO) || - // No need to change the default IDS_PASTE_AND_GO label unless this is a - // search. - !model_->is_paste_and_search()) - return false; - - out->assign(l10n_util::GetString(IDS_PASTE_AND_SEARCH)); - return true; -} - -void AutocompleteEditView::ExecuteCommand(int id) { - ScopedFreeze freeze(this, GetTextObjectModel()); - if (id == IDS_PASTE_AND_GO) { - // This case is separate from the switch() below since we don't want to wrap - // it in OnBefore/AfterPossibleChange() calls. - model_->PasteAndGo(); - return; - } - - OnBeforePossibleChange(); - switch (id) { - case IDS_UNDO: - Undo(); - break; - - case IDS_CUT: - Cut(); - break; - - case IDS_COPY: - Copy(); - break; - - case IDS_PASTE: - Paste(); - break; - - case IDS_SELECT_ALL: - SelectAll(false); - break; - - case IDS_EDIT_SEARCH_ENGINES: - command_updater_->ExecuteCommand(IDC_EDIT_SEARCH_ENGINES); - break; - - default: - NOTREACHED(); - break; - } - OnAfterPossibleChange(); -} - -// static -int CALLBACK AutocompleteEditView::WordBreakProc(LPTSTR edit_text, - int current_pos, - int num_bytes, - int action) { - // TODO(pkasting): http://b/1111308 We should let other people, like ICU and - // GURL, do the work for us here instead of writing all this ourselves. - - // Sadly, even though the MSDN docs claim that the third parameter here is a - // number of characters, they lie. It's a number of bytes. - const int length = num_bytes / sizeof(wchar_t); - - // With no clear guidance from the MSDN docs on how to handle "not found" in - // the "find the nearest xxx..." cases below, I cap the return values at - // [0, length]. Since one of these (0) is also a valid position, the return - // values are thus ambiguous :( - switch (action) { - // Find nearest character before current position that begins a word. - case WB_LEFT: - case WB_MOVEWORDLEFT: { - if (current_pos < 2) { - // Either current_pos == 0, so we have a "not found" case and return 0, - // or current_pos == 1, and the only character before this position is - // at 0. - return 0; - } - - // Look for a delimiter before the previous character; the previous word - // starts immediately after. (If we looked for a delimiter before the - // current character, we could stop on the immediate prior character, - // which would mean we'd return current_pos -- which isn't "before the - // current position".) - const int prev_delim = - WordBreakProc(edit_text, current_pos - 1, num_bytes, WB_LEFTBREAK); - - if ((prev_delim == 0) && - !WordBreakProc(edit_text, 0, num_bytes, WB_ISDELIMITER)) { - // Got back 0, but position 0 isn't a delimiter. This was a "not - // found" 0, so return one of our own. - return 0; - } - - return prev_delim + 1; - } - - // Find nearest character after current position that begins a word. - case WB_RIGHT: - case WB_MOVEWORDRIGHT: { - if (WordBreakProc(edit_text, current_pos, num_bytes, WB_ISDELIMITER)) { - // The current character is a delimiter, so the next character starts - // a new word. Done. - return current_pos + 1; - } - - // Look for a delimiter after the current character; the next word starts - // immediately after. - const int next_delim = - WordBreakProc(edit_text, current_pos, num_bytes, WB_RIGHTBREAK); - if (next_delim == length) { - // Didn't find a delimiter. Return length to signal "not found". - return length; - } - - return next_delim + 1; - } - - // Determine if the current character delimits words. - case WB_ISDELIMITER: - return !!(WordBreakProc(edit_text, current_pos, num_bytes, WB_CLASSIFY) & - WBF_BREAKLINE); - - // Return the classification of the current character. - case WB_CLASSIFY: - if (IsWhitespace(edit_text[current_pos])) { - // Whitespace normally breaks words, but the MSDN docs say that we must - // not break on the CRs in a "CR, LF" or a "CR, CR, LF" sequence. Just - // check for an arbitrarily long sequence of CRs followed by LF and - // report "not a delimiter" for the current CR in that case. - while ((current_pos < (length - 1)) && - (edit_text[current_pos] == 0x13)) { - if (edit_text[++current_pos] == 0x10) - return WBF_ISWHITE; - } - return WBF_BREAKLINE | WBF_ISWHITE; - } - - // Punctuation normally breaks words, but the first two characters in - // "://" (end of scheme) should not be breaks, so that "http://" will be - // treated as one word. - if (ispunct(edit_text[current_pos], std::locale()) && - !SchemeEnd(edit_text, current_pos, length) && - !SchemeEnd(edit_text, current_pos - 1, length)) - return WBF_BREAKLINE; - - // Normal character, no flags. - return 0; - - // Finds nearest delimiter before current position. - case WB_LEFTBREAK: - for (int i = current_pos - 1; i >= 0; --i) { - if (WordBreakProc(edit_text, i, num_bytes, WB_ISDELIMITER)) - return i; - } - return 0; - - // Finds nearest delimiter after current position. - case WB_RIGHTBREAK: - for (int i = current_pos + 1; i < length; ++i) { - if (WordBreakProc(edit_text, i, num_bytes, WB_ISDELIMITER)) - return i; - } - return length; - } - - NOTREACHED(); - return 0; -} - -// static -bool AutocompleteEditView::SchemeEnd(LPTSTR edit_text, - int current_pos, - int length) { - return (current_pos >= 0) && - ((length - current_pos) > 2) && - (edit_text[current_pos] == ':') && - (edit_text[current_pos + 1] == '/') && - (edit_text[current_pos + 2] == '/'); -} - -void AutocompleteEditView::OnChar(TCHAR ch, UINT repeat_count, UINT flags) { - // Don't let alt-enter beep. Not sure this is necessary, as the standard - // alt-enter will hit DiscardWMSysChar() and get thrown away, and - // ctrl-alt-enter doesn't seem to reach here for some reason? At least not on - // my system... still, this is harmless and maybe necessary in other locales. - if (ch == VK_RETURN && (flags & KF_ALTDOWN)) - return; - - // Escape is processed in OnKeyDown. Don't let any WM_CHAR messages propagate - // as we don't want the RichEdit to do anything funky. - if (ch == VK_ESCAPE && !(flags & KF_ALTDOWN)) - return; - - if (ch == VK_TAB) { - // Don't add tabs to the input. - return; - } - - HandleKeystroke(GetCurrentMessage()->message, ch, repeat_count, flags); -} - -void AutocompleteEditView::OnContextMenu(HWND window, const CPoint& point) { - if (point.x == -1 || point.y == -1) { - POINT p; - GetCaretPos(&p); - MapWindowPoints(HWND_DESKTOP, &p, 1); - context_menu_->RunMenuAt(p.x, p.y); - } else { - context_menu_->RunMenuAt(point.x, point.y); - } -} - -void AutocompleteEditView::OnCopy() { - const std::wstring text(GetSelectedText()); - if (text.empty()) - return; - - ScopedClipboardWriter scw(g_browser_process->clipboard_service()); - scw.WriteText(text); - - // Check if the user is copying the whole address bar. If they are, we - // assume they are trying to copy a URL and write this to the clipboard as a - // hyperlink. - if (static_cast<int>(text.length()) < GetTextLength()) - return; - - // The entire control is selected. Let's see what the user typed. We can't - // use model_->CurrentTextIsURL() or model_->GetDataForURLExport() because - // right now the user is probably holding down control to cause the copy, - // which will screw up our calculation of the desired_tld. - GURL url; - if (model_->GetURLForText(text, &url)) - scw.WriteHyperlink(text, url.spec()); -} - -void AutocompleteEditView::OnCut() { - OnCopy(); - - // This replace selection will have no effect (even on the undo stack) if the - // current selection is empty. - ReplaceSel(L"", true); -} - -LRESULT AutocompleteEditView::OnGetObject(UINT uMsg, - WPARAM wparam, - LPARAM lparam) { - // Accessibility readers will send an OBJID_CLIENT message. - if (lparam == OBJID_CLIENT) { - // Re-attach for internal re-usage of accessibility pointer. - autocomplete_accessibility_.Attach(GetIAccessible()); - - if (autocomplete_accessibility_) { - return LresultFromObject(IID_IAccessible, wparam, - autocomplete_accessibility_.p); - } - } - return 0; -} - -LRESULT AutocompleteEditView::OnImeComposition(UINT message, - WPARAM wparam, - LPARAM lparam) { - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - LRESULT result = DefWindowProc(message, wparam, lparam); - if (!OnAfterPossibleChange() && (lparam & GCS_RESULTSTR)) { - // The result string changed, but the text in the popup didn't actually - // change. This means the user finalized the composition. Rerun - // autocomplete so that we can now trigger inline autocomplete if - // applicable. - // - // Note that if we're in the midst of losing focus, UpdatePopup() won't - // actually rerun autocomplete, but will just set local state correctly. - UpdatePopup(); - } - return result; -} - -void AutocompleteEditView::OnKeyDown(TCHAR key, UINT repeat_count, UINT flags) { - if (OnKeyDownAllModes(key, repeat_count, flags) || popup_window_mode_ || - OnKeyDownOnlyWritable(key, repeat_count, flags)) - return; - - // CRichEditCtrl changes its text on WM_KEYDOWN instead of WM_CHAR for many - // different keys (backspace, ctrl-v, ...), so we call this in both cases. - HandleKeystroke(GetCurrentMessage()->message, key, repeat_count, flags); -} - -void AutocompleteEditView::OnKeyUp(TCHAR key, UINT repeat_count, UINT flags) { - if (key == VK_CONTROL) - model_->OnControlKeyChanged(false); - - SetMsgHandled(false); -} - -void AutocompleteEditView::OnKillFocus(HWND focus_wnd) { - if (m_hWnd == focus_wnd) { - // Focus isn't actually leaving. - SetMsgHandled(false); - return; - } - - // Close the popup. - ClosePopup(); - - // Save the user's existing selection to restore it later. - GetSelection(saved_selection_for_focus_change_); - - // Tell the model to reset itself. - model_->OnKillFocus(); - - // Let the CRichEditCtrl do its default handling. This will complete any - // in-progress IME composition. We must do this after setting has_focus_ to - // false so that UpdatePopup() will know not to rerun autocomplete. - ScopedFreeze freeze(this, GetTextObjectModel()); - DefWindowProc(WM_KILLFOCUS, reinterpret_cast<WPARAM>(focus_wnd), 0); - - // Hide the "Type to search" hint if necessary. We do this after calling - // DefWindowProc() because processing the resulting IME messages may notify - // the controller that input is in progress, which could cause the visible - // hints to change. (I don't know if there's a real scenario where they - // actually do change, but this is safest.) - if (model_->show_search_hint() || - (model_->is_keyword_hint() && !model_->keyword().empty())) - controller_->OnChanged(); - - // Cancel any user selection and scroll the text back to the beginning of the - // URL. We have to do this after calling DefWindowProc() because otherwise - // an in-progress IME composition will be completed at the new caret position, - // resulting in the string jumping unexpectedly to the front of the edit. - PlaceCaretAt(0); -} - -void AutocompleteEditView::OnLButtonDblClk(UINT keys, const CPoint& point) { - // Save the double click info for later triple-click detection. - tracking_double_click_ = true; - double_click_point_ = point; - double_click_time_ = GetCurrentMessage()->time; - possible_drag_ = false; - - // Modifying the selection counts as accepting any inline autocompletion, so - // track "changes" made by clicking the mouse button. - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - DefWindowProc(WM_LBUTTONDBLCLK, keys, - MAKELPARAM(ClipXCoordToVisibleText(point.x, false), point.y)); - OnAfterPossibleChange(); - - gaining_focus_.reset(); // See NOTE in OnMouseActivate(). -} - -void AutocompleteEditView::OnLButtonDown(UINT keys, const CPoint& point) { - if (gaining_focus_.get()) { - // This click is giving us focus, so we need to track how much the mouse - // moves to see if it's a drag or just a click. Clicks should select all - // the text. - tracking_click_ = true; - mouse_down_point_ = point; - - // When Chrome was already the activated app, we haven't reached - // OnSetFocus() yet. When we get there, don't restore the saved selection, - // since it will just screw up the user's interaction with the edit. - saved_selection_for_focus_change_.cpMin = -1; - - // Crazy hack: In this particular case, the CRichEditCtrl seems to have an - // internal flag that discards the next WM_LBUTTONDOWN without processing - // it, so that clicks on the edit when its owning app is not activated are - // eaten rather than processed (despite whatever the return value of - // DefWindowProc(WM_MOUSEACTIVATE, ...) may say). This behavior is - // confusing and we want the click to be treated normally. So, to reset the - // CRichEditCtrl's internal flag, we pass it an extra WM_LBUTTONDOWN here - // (as well as a matching WM_LBUTTONUP, just in case we'd be confusing some - // kind of state tracking otherwise). - DefWindowProc(WM_LBUTTONDOWN, keys, MAKELPARAM(point.x, point.y)); - DefWindowProc(WM_LBUTTONUP, keys, MAKELPARAM(point.x, point.y)); - } - - // Check for triple click, then reset tracker. Should be safe to subtract - // double_click_time_ from the current message's time even if the timer has - // wrapped in between. - const bool is_triple_click = tracking_double_click_ && - win_util::IsDoubleClick(double_click_point_, point, - GetCurrentMessage()->time - double_click_time_); - tracking_double_click_ = false; - - if (!gaining_focus_.get() && !is_triple_click) - OnPossibleDrag(point); - - - // Modifying the selection counts as accepting any inline autocompletion, so - // track "changes" made by clicking the mouse button. - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - DefWindowProc(WM_LBUTTONDOWN, keys, - MAKELPARAM(ClipXCoordToVisibleText(point.x, is_triple_click), - point.y)); - OnAfterPossibleChange(); - - gaining_focus_.reset(); -} - -void AutocompleteEditView::OnLButtonUp(UINT keys, const CPoint& point) { - // default processing should happen first so we can see the result of the - // selection - ScopedFreeze freeze(this, GetTextObjectModel()); - DefWindowProc(WM_LBUTTONUP, keys, - MAKELPARAM(ClipXCoordToVisibleText(point.x, false), point.y)); - - // When the user has clicked and released to give us focus, select all. - if (tracking_click_ && !win_util::IsDrag(mouse_down_point_, point)) { - // Select all in the reverse direction so as not to scroll the caret - // into view and shift the contents jarringly. - SelectAll(true); - possible_drag_ = false; - } - - tracking_click_ = false; - - UpdateDragDone(keys); -} - -LRESULT AutocompleteEditView::OnMouseActivate(HWND window, - UINT hit_test, - UINT mouse_message) { - // First, give other handlers a chance to handle the message to see if we are - // actually going to activate and gain focus. - LRESULT result = DefWindowProc(WM_MOUSEACTIVATE, - reinterpret_cast<WPARAM>(window), - MAKELPARAM(hit_test, mouse_message)); - // Check if we're getting focus from a left click. We have to do this here - // rather than in OnLButtonDown() since in many scenarios OnSetFocus() will be - // reached before OnLButtonDown(), preventing us from detecting this properly - // there. Also in those cases, we need to already know in OnSetFocus() that - // we should not restore the saved selection. - if (!model_->has_focus() && (mouse_message == WM_LBUTTONDOWN) && - (result == MA_ACTIVATE)) { - DCHECK(!gaining_focus_.get()); - gaining_focus_.reset(new ScopedFreeze(this, GetTextObjectModel())); - // NOTE: Despite |mouse_message| being WM_LBUTTONDOWN here, we're not - // guaranteed to call OnLButtonDown() later! Specifically, if this is the - // second click of a double click, we'll reach here but later call - // OnLButtonDblClk(). Make sure |gaining_focus_| gets reset both places, or - // we'll have visual glitchiness and then DCHECK failures. - - // Don't restore saved selection, it will just screw up our interaction - // with this edit. - saved_selection_for_focus_change_.cpMin = -1; - } - return result; -} - -void AutocompleteEditView::OnMouseMove(UINT keys, const CPoint& point) { - if (possible_drag_) { - StartDragIfNecessary(point); - // Don't fall through to default mouse handling, otherwise a second - // drag session may start. - return; - } - - if (tracking_click_ && !win_util::IsDrag(mouse_down_point_, point)) - return; - - tracking_click_ = false; - - // Return quickly if this can't change the selection/cursor, so we don't - // create a ScopedFreeze (and thus do an UpdateWindow()) on every - // WM_MOUSEMOVE. - if (!(keys & MK_LBUTTON)) { - DefWindowProc(WM_MOUSEMOVE, keys, MAKELPARAM(point.x, point.y)); - return; - } - - // Clamp the selection to the visible text so the user can't drag to select - // the "phantom newline". In theory we could achieve this by clipping the X - // coordinate, but in practice the edit seems to behave nondeterministically - // with similar sequences of clipped input coordinates fed to it. Maybe it's - // reading the mouse cursor position directly? - // - // This solution has a minor visual flaw, however: if there's a visible cursor - // at the edge of the text (only true when there's no selection), dragging the - // mouse around outside that edge repaints the cursor on every WM_MOUSEMOVE - // instead of allowing it to blink normally. To fix this, we special-case - // this exact case and discard the WM_MOUSEMOVE messages instead of passing - // them along. - // - // But even this solution has a flaw! (Argh.) In the case where the user has - // a selection that starts at the edge of the edit, and proceeds to the middle - // of the edit, and the user is dragging back past the start edge to remove - // the selection, there's a redraw problem where the change between having the - // last few bits of text still selected and having nothing selected can be - // slow to repaint (which feels noticeably strange). This occurs if you only - // let the edit receive a single WM_MOUSEMOVE past the edge of the text. I - // think on each WM_MOUSEMOVE the edit is repainting its previous state, then - // updating its internal variables to the new state but not repainting. To - // fix this, we allow one more WM_MOUSEMOVE through after the selection has - // supposedly been shrunk to nothing; this makes the edit redraw the selection - // quickly so it feels smooth. - CHARRANGE selection; - GetSel(selection); - const bool possibly_can_discard_mousemove = - (selection.cpMin == selection.cpMax) && - (((selection.cpMin == 0) && - (ClipXCoordToVisibleText(point.x, false) > point.x)) || - ((selection.cpMin == GetTextLength()) && - (ClipXCoordToVisibleText(point.x, false) < point.x))); - if (!can_discard_mousemove_ || !possibly_can_discard_mousemove) { - can_discard_mousemove_ = possibly_can_discard_mousemove; - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - // Force the Y coordinate to the center of the clip rect. The edit - // behaves strangely when the cursor is dragged vertically: if the cursor - // is in the middle of the text, drags inside the clip rect do nothing, - // and drags outside the clip rect act as if the cursor jumped to the - // left edge of the text. When the cursor is at the right edge, drags of - // just a few pixels vertically end up selecting the "phantom newline"... - // sometimes. - RECT r; - GetRect(&r); - DefWindowProc(WM_MOUSEMOVE, keys, - MAKELPARAM(point.x, (r.bottom - r.top) / 2)); - OnAfterPossibleChange(); - } -} - -void AutocompleteEditView::OnPaint(HDC bogus_hdc) { - // We need to paint over the top of the edit. If we simply let the edit do - // its default painting, then do ours into the window DC, the screen is - // updated in between and we can get flicker. To avoid this, we force the - // edit to paint into a memory DC, which we also paint onto, then blit the - // whole thing to the screen. - - // Don't paint if not necessary. - CRect paint_clip_rect; - if (!GetUpdateRect(&paint_clip_rect, true)) - return; - - // Begin painting, and create a memory DC for the edit to paint into. - CPaintDC paint_dc(m_hWnd); - CDC memory_dc(CreateCompatibleDC(paint_dc)); - CRect rect; - GetClientRect(&rect); - // NOTE: This next call uses |paint_dc| instead of |memory_dc| because - // |memory_dc| contains a 1x1 monochrome bitmap by default, which will cause - // |memory_bitmap| to be monochrome, which isn't what we want. - CBitmap memory_bitmap(CreateCompatibleBitmap(paint_dc, rect.Width(), - rect.Height())); - HBITMAP old_bitmap = memory_dc.SelectBitmap(memory_bitmap); - - // Tell our intercept functions to supply our memory DC to the edit when it - // tries to call BeginPaint(). - // - // The sane way to do this would be to use WM_PRINTCLIENT to ask the edit to - // paint into our desired DC. Unfortunately, the Rich Edit 3.0 that ships - // with Windows 2000/XP/Vista doesn't handle WM_PRINTCLIENT correctly; it - // treats it just like WM_PAINT and calls BeginPaint(), ignoring our provided - // DC. The Rich Edit 6.0 that ships with Office 2007 handles this better, but - // has other issues, and we can't redistribute that DLL anyway. So instead, - // we use this scary hack. - // - // NOTE: It's possible to get nested paint calls (!) (try setting the - // permanent URL to something longer than the edit width, then selecting the - // contents of the edit, typing a character, and hitting <esc>), so we can't - // DCHECK(!edit_hwnd_) here. Instead, just save off the old HWND, which most - // of the time will be NULL. - HWND old_edit_hwnd = edit_hwnd; - edit_hwnd = m_hWnd; - paint_struct = paint_dc.m_ps; - paint_struct.hdc = memory_dc; - DefWindowProc(WM_PAINT, reinterpret_cast<WPARAM>(bogus_hdc), 0); - - // Make the selection look better. - EraseTopOfSelection(&memory_dc, rect, paint_clip_rect); - - // Draw a slash through the scheme if this is insecure. - if (insecure_scheme_component_.is_nonempty()) - DrawSlashForInsecureScheme(memory_dc, rect, paint_clip_rect); - - // Draw the drop highlight. - if (drop_highlight_position_ != -1) - DrawDropHighlight(memory_dc, rect, paint_clip_rect); - - // Blit the memory DC to the actual paint DC and clean up. - BitBlt(paint_dc, rect.left, rect.top, rect.Width(), rect.Height(), memory_dc, - rect.left, rect.top, SRCCOPY); - memory_dc.SelectBitmap(old_bitmap); - edit_hwnd = old_edit_hwnd; -} - -void AutocompleteEditView::OnNonLButtonDown(UINT keys, const CPoint& point) { - // Interestingly, the edit doesn't seem to cancel triple clicking when the - // x-buttons (which usually means "thumb buttons") are pressed, so we only - // call this for M and R down. - tracking_double_click_ = false; - - OnPossibleDrag(point); - - SetMsgHandled(false); -} - -void AutocompleteEditView::OnNonLButtonUp(UINT keys, const CPoint& point) { - UpdateDragDone(keys); - - // Let default handler have a crack at this. - SetMsgHandled(false); -} - -void AutocompleteEditView::OnPaste() { - // Replace the selection if we have something to paste. - const std::wstring text(GetClipboardText()); - if (!text.empty()) { - // If this paste will be replacing all the text, record that, so we can do - // different behaviors in such a case. - if (IsSelectAll()) - model_->on_paste_replacing_all(); - ReplaceSel(text.c_str(), true); - } -} - -void AutocompleteEditView::OnSetFocus(HWND focus_wnd) { - model_->OnSetFocus(GetKeyState(VK_CONTROL) < 0); - - // Notify controller if it needs to show hint UI of some kind. - ScopedFreeze freeze(this, GetTextObjectModel()); - if (model_->show_search_hint() || - (model_->is_keyword_hint() && !model_->keyword().empty())) - controller_->OnChanged(); - - // Restore saved selection if available. - if (saved_selection_for_focus_change_.cpMin != -1) { - SetSelectionRange(saved_selection_for_focus_change_); - saved_selection_for_focus_change_.cpMin = -1; - } - - SetMsgHandled(false); -} - -void AutocompleteEditView::OnSysChar(TCHAR ch, UINT repeat_count, UINT flags) { - // Nearly all alt-<xxx> combos result in beeping rather than doing something - // useful, so we discard most. Exceptions: - // * ctrl-alt-<xxx>, which is sometimes important, generates WM_CHAR instead - // of WM_SYSCHAR, so it doesn't need to be handled here. - // * alt-space gets translated by the default WM_SYSCHAR handler to a - // WM_SYSCOMMAND to open the application context menu, so we need to allow - // it through. - if (ch == VK_SPACE) - SetMsgHandled(false); -} - -void AutocompleteEditView::HandleKeystroke(UINT message, - TCHAR key, - UINT repeat_count, - UINT flags) { - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - DefWindowProc(message, key, MAKELPARAM(repeat_count, flags)); - OnAfterPossibleChange(); -} - -bool AutocompleteEditView::OnKeyDownOnlyWritable(TCHAR key, - UINT repeat_count, - UINT flags) { - // NOTE: Annoyingly, ctrl-alt-<key> generates WM_KEYDOWN rather than - // WM_SYSKEYDOWN, so we need to check (flags & KF_ALTDOWN) in various places - // in this function even with a WM_SYSKEYDOWN handler. - - int count = repeat_count; - switch (key) { - case VK_RETURN: - model_->AcceptInput((flags & KF_ALTDOWN) ? - NEW_FOREGROUND_TAB : CURRENT_TAB, false); - return true; - - case VK_UP: - count = -count; - // FALL THROUGH - case VK_DOWN: - if (flags & KF_ALTDOWN) - return false; - - model_->OnUpOrDownKeyPressed(count); - return true; - - // Hijacking Editing Commands - // - // We hijack the keyboard short-cuts for Cut, Copy, and Paste here so that - // they go through our clipboard routines. This allows us to be smarter - // about how we interact with the clipboard and avoid bugs in the - // CRichEditCtrl. If we didn't hijack here, the edit control would handle - // these internally with sending the WM_CUT, WM_COPY, or WM_PASTE messages. - // - // Cut: Shift-Delete and Ctrl-x are treated as cut. Ctrl-Shift-Delete and - // Ctrl-Shift-x are not treated as cut even though the underlying - // CRichTextEdit would treat them as such. - // Copy: Ctrl-c is treated as copy. Shift-Ctrl-c is not. (This is handled - // in OnKeyDownAllModes().) - // Paste: Shift-Insert and Ctrl-v are tread as paste. Ctrl-Shift-Insert and - // Ctrl-Shift-v are not. - // - // This behavior matches most, but not all Windows programs, and largely - // conforms to what users expect. - - case VK_DELETE: - if ((flags & KF_ALTDOWN) || GetKeyState(VK_SHIFT) >= 0) - return false; - if (GetKeyState(VK_CONTROL) >= 0) { - // Cut text if possible. - CHARRANGE selection; - GetSel(selection); - if (selection.cpMin != selection.cpMax) { - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - Cut(); - OnAfterPossibleChange(); - } else if (popup_view_->model()->IsOpen()) { - // This is a bit overloaded, but we hijack Shift-Delete in this - // case to delete the current item from the pop-up. We prefer cutting - // to this when possible since that's the behavior more people expect - // from Shift-Delete, and it's more commonly useful. - popup_view_->model()->TryDeletingCurrentItem(); - } - } - return true; - - case 'X': - if ((flags & KF_ALTDOWN) || (GetKeyState(VK_CONTROL) >= 0)) - return false; - if (GetKeyState(VK_SHIFT) >= 0) { - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - Cut(); - OnAfterPossibleChange(); - } - return true; - - case VK_INSERT: - case 'V': - if ((flags & KF_ALTDOWN) || - (GetKeyState((key == 'V') ? VK_CONTROL : VK_SHIFT) >= 0)) - return false; - if (GetKeyState((key == 'V') ? VK_SHIFT : VK_CONTROL) >= 0) { - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - Paste(); - OnAfterPossibleChange(); - } - return true; - - case VK_BACK: { - if ((flags & KF_ALTDOWN) || model_->is_keyword_hint() || - model_->keyword().empty()) - return false; - - { - CHARRANGE selection; - GetSel(selection); - if ((selection.cpMin != selection.cpMax) || (selection.cpMin != 0)) - return false; - } - - // We're showing a keyword and the user pressed backspace at the beginning - // of the text. Delete the selected keyword. - ScopedFreeze freeze(this, GetTextObjectModel()); - model_->ClearKeyword(GetText()); - return true; - } - - case VK_TAB: { - if (model_->is_keyword_hint() && !model_->keyword().empty()) { - // Accept the keyword. - ScopedFreeze freeze(this, GetTextObjectModel()); - model_->AcceptKeyword(); - } - return true; - } - - case 0xbb: // Ctrl-'='. Triggers subscripting (even in plain text mode). - return true; - - default: - return false; - } -} - -bool AutocompleteEditView::OnKeyDownAllModes(TCHAR key, - UINT repeat_count, - UINT flags) { - // See KF_ALTDOWN comment atop OnKeyDownOnlyWriteable(). - - switch (key) { - case VK_CONTROL: - model_->OnControlKeyChanged(true); - return false; - - case 'C': - // See more detailed comments in OnKeyDownOnlyWriteable(). - if ((flags & KF_ALTDOWN) || (GetKeyState(VK_CONTROL) >= 0)) - return false; - if (GetKeyState(VK_SHIFT) >= 0) - Copy(); - return true; - - default: - return false; - } -} - -void AutocompleteEditView::GetSelection(CHARRANGE& sel) const { - GetSel(sel); - - // See if we need to reverse the direction of the selection. - ITextDocument* const text_object_model = GetTextObjectModel(); - if (!text_object_model) - return; - CComPtr<ITextSelection> selection; - const HRESULT hr = text_object_model->GetSelection(&selection); - DCHECK(hr == S_OK); - long flags; - selection->GetFlags(&flags); - if (flags & tomSelStartActive) - std::swap(sel.cpMin, sel.cpMax); -} - -std::wstring AutocompleteEditView::GetSelectedText() const { - // Figure out the length of the selection. - CHARRANGE sel; - GetSel(sel); - - // Grab the selected text. - std::wstring str; - GetSelText(WriteInto(&str, sel.cpMax - sel.cpMin + 1)); - return str; -} - -void AutocompleteEditView::SetSelection(LONG start, LONG end) { - SetSel(start, end); - - if (start <= end) - return; - - // We need to reverse the direction of the selection. - ITextDocument* const text_object_model = GetTextObjectModel(); - if (!text_object_model) - return; - CComPtr<ITextSelection> selection; - const HRESULT hr = text_object_model->GetSelection(&selection); - DCHECK(hr == S_OK); - selection->SetFlags(tomSelStartActive); -} - -void AutocompleteEditView::PlaceCaretAt(std::wstring::size_type pos) { - SetSelection(static_cast<LONG>(pos), static_cast<LONG>(pos)); -} - -bool AutocompleteEditView::IsSelectAllForRange(const CHARRANGE& sel) const { - const int text_length = GetTextLength(); - return ((sel.cpMin == 0) && (sel.cpMax >= text_length)) || - ((sel.cpMax == 0) && (sel.cpMin >= text_length)); -} - -LONG AutocompleteEditView::ClipXCoordToVisibleText(LONG x, - bool is_triple_click) const { - // Clip the X coordinate to the left edge of the text. Careful: - // PosFromChar(0) may return a negative X coordinate if the beginning of the - // text has scrolled off the edit, so don't go past the clip rect's edge. - RECT r; - GetRect(&r); - const int left_bound = std::max(r.left, PosFromChar(0).x); - if (x < left_bound) - return left_bound; - - // See if we need to clip to the right edge of the text. - const int length = GetTextLength(); - // Asking for the coordinate of any character past the end of the text gets - // the pixel just to the right of the last character. - const int right_bound = std::min(r.right, PosFromChar(length).x); - if ((length == 0) || (x < right_bound)) - return x; - - // For trailing characters that are 2 pixels wide of less (like "l" in some - // fonts), we have a problem: - // * Clicks on any pixel within the character will place the cursor before - // the character. - // * Clicks on the pixel just after the character will not allow triple- - // click to work properly (true for any last character width). - // So, we move to the last pixel of the character when this is a - // triple-click, and moving to one past the last pixel in all other - // scenarios. This way, all clicks that can move the cursor will place it at - // the end of the text, but triple-click will still work. - return is_triple_click ? (right_bound - 1) : right_bound; -} - -void AutocompleteEditView::EmphasizeURLComponents() { - ITextDocument* const text_object_model = GetTextObjectModel(); - ScopedFreeze freeze(this, text_object_model); - ScopedSuspendUndo suspend_undo(text_object_model); - - // Save the selection. - CHARRANGE saved_sel; - GetSelection(saved_sel); - - // See whether the contents are a URL with a non-empty host portion, which we - // should emphasize. To check for a URL, rather than using the type returned - // by Parse(), ask the model, which will check the desired page transition for - // this input. This can tell us whether an UNKNOWN input string is going to - // be treated as a search or a navigation, and is the same method the Paste - // And Go system uses. - url_parse::Parsed parts; - AutocompleteInput::Parse(GetText(), model_->GetDesiredTLD(), &parts, NULL); - const bool emphasize = model_->CurrentTextIsURL() && (parts.host.len > 0); - - // Set the baseline emphasis. - CHARFORMAT cf = {0}; - cf.dwMask = CFM_COLOR; - cf.dwEffects = 0; - cf.crTextColor = GetSysColor(emphasize ? COLOR_GRAYTEXT : COLOR_WINDOWTEXT); - SelectAll(false); - SetSelectionCharFormat(cf); - - if (emphasize) { - // We've found a host name, give it more emphasis. - cf.crTextColor = GetSysColor(COLOR_WINDOWTEXT); - SetSelection(parts.host.begin, parts.host.end()); - SetSelectionCharFormat(cf); - } - - // Emphasize the scheme for security UI display purposes (if necessary). - insecure_scheme_component_.reset(); - if (!model_->user_input_in_progress() && parts.scheme.is_nonempty() && - (scheme_security_level_ != ToolbarModel::NORMAL)) { - if (scheme_security_level_ == ToolbarModel::SECURE) { - cf.crTextColor = kSecureSchemeColor; - } else { - insecure_scheme_component_.begin = parts.scheme.begin; - insecure_scheme_component_.len = parts.scheme.len; - cf.crTextColor = kInsecureSchemeColor; - } - SetSelection(parts.scheme.begin, parts.scheme.end()); - SetSelectionCharFormat(cf); - } - - // Restore the selection. - SetSelectionRange(saved_sel); -} - -void AutocompleteEditView::EraseTopOfSelection(CDC* dc, - const CRect& client_rect, - const CRect& paint_clip_rect) { - // Find the area we care about painting. We could calculate the rect - // containing just the selected portion, but there's no harm in simply erasing - // the whole top of the client area, and at least once I saw us manage to - // select the "phantom newline" briefly, which looks very weird if not clipped - // off at the same height. - CRect erase_rect(client_rect.left, client_rect.top, client_rect.right, - client_rect.top + font_y_adjustment_); - erase_rect.IntersectRect(erase_rect, paint_clip_rect); - - // Erase to the background color. - if (!erase_rect.IsRectNull()) - dc->FillSolidRect(&erase_rect, background_color_); -} - -void AutocompleteEditView::DrawSlashForInsecureScheme( - HDC hdc, - const CRect& client_rect, - const CRect& paint_clip_rect) { - DCHECK(insecure_scheme_component_.is_nonempty()); - - // Calculate the rect, in window coordinates, containing the portion of the - // scheme where we'll be drawing the slash. Vertically, we draw across one - // x-height of text, plus an additional 3 stroke diameters (the stroke width - // plus a half-stroke width of space between the stroke and the text, both - // above and below the text). - const int font_top = client_rect.top + font_y_adjustment_; - const SkScalar kStrokeWidthPixels = SkIntToScalar(2); - const int kAdditionalSpaceOutsideFont = - static_cast<int>(ceil(kStrokeWidthPixels * 1.5f)); - const CRect scheme_rect(PosFromChar(insecure_scheme_component_.begin).x, - font_top + font_ascent_ - font_x_height_ - - kAdditionalSpaceOutsideFont, - PosFromChar(insecure_scheme_component_.end()).x, - font_top + font_ascent_ + - kAdditionalSpaceOutsideFont); - - // Clip to the portion we care about and translate to canvas coordinates - // (see the canvas creation below) for use later. - CRect canvas_clip_rect, canvas_paint_clip_rect; - canvas_clip_rect.IntersectRect(scheme_rect, client_rect); - canvas_paint_clip_rect.IntersectRect(canvas_clip_rect, paint_clip_rect); - if (canvas_paint_clip_rect.IsRectNull()) - return; // We don't need to paint any of this region, so just bail early. - canvas_clip_rect.OffsetRect(-scheme_rect.left, -scheme_rect.top); - canvas_paint_clip_rect.OffsetRect(-scheme_rect.left, -scheme_rect.top); - - // Create a paint context for drawing the antialiased stroke. - SkPaint paint; - paint.setAntiAlias(true); - paint.setStrokeWidth(kStrokeWidthPixels); - paint.setStrokeCap(SkPaint::kRound_Cap); - - // Create a canvas as large as |scheme_rect| to do our drawing, and initialize - // it to fully transparent so any antialiasing will look nice when painted - // atop the edit. - ChromeCanvas canvas(scheme_rect.Width(), scheme_rect.Height(), false); - // TODO (jcampan): This const_cast should not be necessary once the SKIA - // API has been changed to return a non-const bitmap. - (const_cast<SkBitmap&>(canvas.getDevice()->accessBitmap(true))). - eraseARGB(0, 0, 0, 0); - - // Calculate the start and end of the stroke, which are just the lower left - // and upper right corners of the canvas, inset by the radius of the endcap - // so we don't clip the endcap off. - const SkScalar kEndCapRadiusPixels = kStrokeWidthPixels / SkIntToScalar(2); - const SkPoint start_point = { - kEndCapRadiusPixels, - SkIntToScalar(scheme_rect.Height()) - kEndCapRadiusPixels }; - const SkPoint end_point = { - SkIntToScalar(scheme_rect.Width()) - kEndCapRadiusPixels, - kEndCapRadiusPixels }; - - // Calculate the selection rectangle in canvas coordinates, which we'll use - // to clip the stroke so we can draw the unselected and selected portions. - CHARRANGE sel; - GetSel(sel); - const SkRect selection_rect = { - SkIntToScalar(PosFromChar(sel.cpMin).x - scheme_rect.left), - SkIntToScalar(0), - SkIntToScalar(PosFromChar(sel.cpMax).x - scheme_rect.left), - SkIntToScalar(scheme_rect.Height()) }; - - // Draw the unselected portion of the stroke. - canvas.save(); - if (selection_rect.isEmpty() || - canvas.clipRect(selection_rect, SkRegion::kDifference_Op)) { - paint.setColor(kSchemeStrikeoutColor); - canvas.drawLine(start_point.fX, start_point.fY, - end_point.fX, end_point.fY, paint); - } - canvas.restore(); - - // Draw the selected portion of the stroke. - if (!selection_rect.isEmpty() && canvas.clipRect(selection_rect)) { - paint.setColor(kSchemeSelectedStrikeoutColor); - canvas.drawLine(start_point.fX, start_point.fY, - end_point.fX, end_point.fY, paint); - } - - // Now copy what we drew to the target HDC. - canvas.getTopPlatformDevice().drawToHDC(hdc, - scheme_rect.left + canvas_paint_clip_rect.left - canvas_clip_rect.left, - std::max(scheme_rect.top, client_rect.top) + canvas_paint_clip_rect.top - - canvas_clip_rect.top, &canvas_paint_clip_rect); -} - -void AutocompleteEditView::DrawDropHighlight(HDC hdc, - const CRect& client_rect, - const CRect& paint_clip_rect) { - DCHECK(drop_highlight_position_ != -1); - - const int highlight_y = client_rect.top + font_y_adjustment_; - const int highlight_x = PosFromChar(drop_highlight_position_).x - 1; - const CRect highlight_rect(highlight_x, - highlight_y, - highlight_x + 1, - highlight_y + font_ascent_ + font_descent_); - - // Clip the highlight to the region being painted. - CRect clip_rect; - clip_rect.IntersectRect(highlight_rect, paint_clip_rect); - if (clip_rect.IsRectNull()) - return; - - HGDIOBJ last_pen = SelectObject(hdc, CreatePen(PS_SOLID, 1, RGB(0, 0, 0))); - MoveToEx(hdc, clip_rect.left, clip_rect.top, NULL); - LineTo(hdc, clip_rect.left, clip_rect.bottom); - DeleteObject(SelectObject(hdc, last_pen)); -} - -void AutocompleteEditView::TextChanged() { - ScopedFreeze freeze(this, GetTextObjectModel()); - EmphasizeURLComponents(); - controller_->OnChanged(); -} - -std::wstring AutocompleteEditView::GetClipboardText() const { - // Try text format. - ClipboardService* clipboard = g_browser_process->clipboard_service(); - if (clipboard->IsFormatAvailable(CF_UNICODETEXT)) { - std::wstring text; - clipboard->ReadText(&text); - - // Note: Unlike in the find popup and textfield view, here we completely - // remove whitespace strings containing newlines. We assume users are - // most likely pasting in URLs that may have been split into multiple - // lines in terminals, email programs, etc., and so linebreaks indicate - // completely bogus whitespace that would just cause the input to be - // invalid. - return CollapseWhitespace(text, true); - } - - // Try bookmark format. - // - // It is tempting to try bookmark format first, but the URL we get out of a - // bookmark has been cannonicalized via GURL. This means if a user copies - // and pastes from the URL bar to itself, the text will get fixed up and - // cannonicalized, which is not what the user expects. By pasting in this - // order, we are sure to paste what the user copied. - if (clipboard->IsFormatAvailable(Clipboard::GetUrlWFormatType())) { - std::string url_str; - clipboard->ReadBookmark(NULL, &url_str); - // pass resulting url string through GURL to normalize - GURL url(url_str); - if (url.is_valid()) - return UTF8ToWide(url.spec()); - } - - return std::wstring(); -} - -bool AutocompleteEditView::CanPasteAndGo(const std::wstring& text) const { - return !popup_window_mode_ && model_->CanPasteAndGo(text); -} - -ITextDocument* AutocompleteEditView::GetTextObjectModel() const { - if (!text_object_model_) { - // This is lazily initialized, instead of being initialized in the - // constructor, in order to avoid hurting startup performance. - CComPtr<IRichEditOle> ole_interface; - ole_interface.Attach(GetOleInterface()); - text_object_model_ = ole_interface; - } - return text_object_model_; -} - -void AutocompleteEditView::StartDragIfNecessary(const CPoint& point) { - if (initiated_drag_ || !win_util::IsDrag(mouse_down_point_, point)) - return; - - scoped_refptr<OSExchangeData> data = new OSExchangeData; - - DWORD supported_modes = DROPEFFECT_COPY; - - CHARRANGE sel; - GetSelection(sel); - - // We're about to start a drag session, but the edit is expecting a mouse up - // that it uses to reset internal state. If we don't send a mouse up now, - // when the mouse moves back into the edit the edit will reset the selection. - // So, we send the event now which resets the selection. We then restore the - // selection and start the drag. We always send lbuttonup as otherwise we - // might trigger a context menu (right up). This seems scary, but doesn't - // seem to cause problems. - { - ScopedFreeze freeze(this, GetTextObjectModel()); - DefWindowProc(WM_LBUTTONUP, 0, - MAKELPARAM(mouse_down_point_.x, mouse_down_point_.y)); - SetSelectionRange(sel); - } - - const std::wstring start_text(GetText()); - if (IsSelectAllForRange(sel)) { - // All the text is selected, export as URL. - GURL url; - std::wstring title; - SkBitmap favicon; - model_->GetDataForURLExport(&url, &title, &favicon); - drag_utils::SetURLAndDragImage(url, title, favicon, data.get()); - data->SetURL(url, title); - supported_modes |= DROPEFFECT_LINK; - UserMetrics::RecordAction(L"Omnibox_DragURL", model_->profile()); - } else { - supported_modes |= DROPEFFECT_MOVE; - UserMetrics::RecordAction(L"Omnibox_DragString", model_->profile()); - } - - data->SetString(GetSelectedText()); - - scoped_refptr<BaseDragSource> drag_source(new BaseDragSource); - DWORD dropped_mode; - in_drag_ = true; - if (DoDragDrop(data, drag_source, supported_modes, &dropped_mode) == - DRAGDROP_S_DROP) { - if ((dropped_mode == DROPEFFECT_MOVE) && (start_text == GetText())) { - ScopedFreeze freeze(this, GetTextObjectModel()); - OnBeforePossibleChange(); - SetSelectionRange(sel); - ReplaceSel(L"", true); - OnAfterPossibleChange(); - } - // else case, not a move or it was a move and the drop was on us. - // If the drop was on us, EditDropTarget took care of the move so that - // we don't have to delete the text. - possible_drag_ = false; - } else { - // Drag was canceled or failed. The mouse may still be down and - // over us, in which case we need possible_drag_ to remain true so - // that we don't forward mouse move events to the edit which will - // start another drag. - // - // NOTE: we didn't use mouse capture during the mouse down as DoDragDrop - // does its own capture. - CPoint cursor_location; - GetCursorPos(&cursor_location); - - CRect client_rect; - GetClientRect(&client_rect); - - CPoint client_origin_on_screen(client_rect.left, client_rect.top); - ClientToScreen(&client_origin_on_screen); - client_rect.MoveToXY(client_origin_on_screen.x, - client_origin_on_screen.y); - possible_drag_ = (client_rect.PtInRect(cursor_location) && - ((GetKeyState(VK_LBUTTON) != 0) || - (GetKeyState(VK_MBUTTON) != 0) || - (GetKeyState(VK_RBUTTON) != 0))); - } - - in_drag_ = false; - initiated_drag_ = true; - tracking_click_ = false; -} - -void AutocompleteEditView::OnPossibleDrag(const CPoint& point) { - if (possible_drag_) - return; - - mouse_down_point_ = point; - initiated_drag_ = false; - - CHARRANGE selection; - GetSel(selection); - if (selection.cpMin != selection.cpMax) { - const POINT min_sel_location(PosFromChar(selection.cpMin)); - const POINT max_sel_location(PosFromChar(selection.cpMax)); - // NOTE: we don't consider the y location here as we always pass a - // y-coordinate in the middle to the default handler which always triggers - // a drag regardless of the y-coordinate. - possible_drag_ = (point.x >= min_sel_location.x) && - (point.x < max_sel_location.x); - } -} - -void AutocompleteEditView::UpdateDragDone(UINT keys) { - possible_drag_ = (possible_drag_ && - ((keys & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) != 0)); -} - -void AutocompleteEditView::RepaintDropHighlight(int position) { - if ((position != -1) && (position <= GetTextLength())) { - const POINT min_loc(PosFromChar(position)); - const RECT highlight_bounds = {min_loc.x - 1, font_y_adjustment_, - min_loc.x + 2, font_ascent_ + font_descent_ + font_y_adjustment_}; - InvalidateRect(&highlight_bounds, false); - } -} diff --git a/chrome/browser/autocomplete/autocomplete_edit.h b/chrome/browser/autocomplete/autocomplete_edit.h index 782f85d..e4bb2af 100644 --- a/chrome/browser/autocomplete/autocomplete_edit.h +++ b/chrome/browser/autocomplete/autocomplete_edit.h @@ -5,34 +5,18 @@ #ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_H_ #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_H_ -#include <atlbase.h> -#include <atlapp.h> -#include <atlcrack.h> -#include <atlctrls.h> -#include <atlmisc.h> -#include <tom.h> // For ITextDocument, a COM interface to CRichEditCtrl. - -#include "base/scoped_ptr.h" #include "chrome/browser/autocomplete/autocomplete.h" -#include "chrome/browser/toolbar_model.h" -#include "chrome/common/gfx/chrome_font.h" #include "chrome/common/page_transition_types.h" -#include "chrome/views/menu.h" +#include "googleurl/src/gurl.h" #include "webkit/glue/window_open_disposition.h" class AutocompletePopupModel; -class CommandUpdater; class Profile; -class TabContents; -namespace views { -class View; -} +class SkBitmap; class AutocompleteEditController; class AutocompleteEditModel; class AutocompleteEditView; -class AutocompletePopupViewWin; -struct AutocompleteEditState; // TODO(pkasting): http://b/1343512 The names and contents of the classes in // this file are temporary. I am in hack-and-slash mode right now. @@ -439,485 +423,4 @@ class AutocompleteEditModel { DISALLOW_COPY_AND_ASSIGN(AutocompleteEditModel); }; -// Provides the implementation of an edit control with a drop-down -// autocomplete box. The box itself is implemented in autocomplete_popup.cc -// This file implements the edit box and management for the popup. -class AutocompleteEditView - : public CWindowImpl<AutocompleteEditView, - CRichEditCtrl, - CWinTraits<WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL | - ES_NOHIDESEL> >, - public CRichEditCommands<AutocompleteEditView>, - public Menu::Delegate { - public: - struct State { - State(const CHARRANGE& selection, - const CHARRANGE& saved_selection_for_focus_change) - : selection(selection), - saved_selection_for_focus_change(saved_selection_for_focus_change) { - } - - const CHARRANGE selection; - const CHARRANGE saved_selection_for_focus_change; - }; - - DECLARE_WND_CLASS(L"Chrome_AutocompleteEditView"); - - AutocompleteEditView(const ChromeFont& font, - AutocompleteEditController* controller, - ToolbarModel* toolbar_model, - views::View* parent_view, - HWND hwnd, - Profile* profile, - CommandUpdater* command_updater, - bool popup_window_mode); - ~AutocompleteEditView(); - - AutocompleteEditModel* model() { return model_.get(); } - const AutocompleteEditModel* model() const { return model_.get(); } - - views::View* parent_view() const { return parent_view_; } - - // For use when switching tabs, this saves the current state onto the tab so - // that it can be restored during a later call to Update(). - void SaveStateToTab(TabContents* tab); - - // Called when any LocationBarView state changes. If - // |tab_for_state_restoring| is non-NULL, it points to a TabContents whose - // state we should restore. - void Update(const TabContents* tab_for_state_restoring); - - // Asks the browser to load the specified URL, which is assumed to be one of - // the popup entries, using the supplied disposition and transition type. - // |alternate_nav_url|, if non-empty, contains the alternate navigation URL - // for |url|. See comments on AutocompleteResult::GetAlternateNavURL(). - // - // |selected_line| is passed to SendOpenNotification(); see comments there. - // - // If the URL was expanded from a keyword, |keyword| is that keyword. - // - // This may close the popup. - void OpenURL(const GURL& url, - WindowOpenDisposition disposition, - PageTransition::Type transition, - const GURL& alternate_nav_url, - size_t selected_line, - const std::wstring& keyword); - - // Returns the current text of the edit control, which could be the - // "temporary" text set by the popup, the "permanent" text set by the - // browser, or just whatever the user has currently typed. - std::wstring GetText() const; - - // The user text is the text the user has manually keyed in. When present, - // this is shown in preference to the permanent text; hitting escape will - // revert to the permanent text. - void SetUserText(const std::wstring& text) { SetUserText(text, text, true); } - void SetUserText(const std::wstring& text, - const std::wstring& display_text, - bool update_popup); - - // Sets the window text and the caret position. - void SetWindowTextAndCaretPos(const std::wstring& text, size_t caret_pos); - - // Returns true if all text is selected. - bool IsSelectAll(); - - // Selects all the text in the edit. Use this in place of SetSelAll() to - // avoid selecting the "phantom newline" at the end of the edit. - void SelectAll(bool reversed); - - // Reverts the edit and popup back to their unedited state (permanent text - // showing, popup closed, no user input in progress). - void RevertAll(); - - // Updates the autocomplete popup and other state after the text has been - // changed by the user. - void UpdatePopup(); - - // Closes the autocomplete popup, if it's open. - void ClosePopup(); - - // Exposes custom IAccessible implementation to the overall MSAA hierarchy. - IAccessible* GetIAccessible(); - - void SetDropHighlightPosition(int position); - int drop_highlight_position() const { return drop_highlight_position_; } - - // Returns true if a drag a drop session was initiated by this edit. - bool in_drag() const { return in_drag_; } - - // Moves the selected text to the specified position. - void MoveSelectedText(int new_position); - - // Inserts the text at the specified position. - void InsertText(int position, const std::wstring& text); - - // Called when the temporary text in the model may have changed. - // |display_text| is the new text to show; |save_original_selection| is true - // when there wasn't previously a temporary text and thus we need to save off - // the user's existing selection. - void OnTemporaryTextMaybeChanged(const std::wstring& display_text, - bool save_original_selection); - - // Called when the inline autocomplete text in the model may have changed. - // |display_text| is the new text to show; |user_text_length| is the length of - // the user input portion of that (so, up to but not including the inline - // autocompletion). Returns whether the display text actually changed. - bool OnInlineAutocompleteTextMaybeChanged(const std::wstring& display_text, - size_t user_text_length); - - // Called when the temporary text has been reverted by the user. This will - // reset the user's original selection. - void OnRevertTemporaryText(); - - // Every piece of code that can change the edit should call these functions - // before and after the change. These functions determine if anything - // meaningful changed, and do any necessary updating and notification. - void OnBeforePossibleChange(); - // OnAfterPossibleChange() returns true if there was a change that caused it - // to call UpdatePopup(). - bool OnAfterPossibleChange(); - - // Invokes CanPasteAndGo with the specified text, and if successful navigates - // to the appropriate URL. The behavior of this is the same as if the user - // typed in the specified text and pressed enter. - void PasteAndGo(const std::wstring& text); - - // Called before an accelerator is processed to give us a chance to override - // it. - bool OverrideAccelerator(const views::Accelerator& accelerator); - - // Handler for external events passed in to us. The View that owns us may - // send us events that we should treat as if they were events on us. - void HandleExternalMsg(UINT msg, UINT flags, const CPoint& screen_point); - - // CWindowImpl - BEGIN_MSG_MAP(AutocompleteEdit) - MSG_WM_CHAR(OnChar) - MSG_WM_CONTEXTMENU(OnContextMenu) - MSG_WM_COPY(OnCopy) - MSG_WM_CUT(OnCut) - MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject) - MESSAGE_HANDLER_EX(WM_IME_COMPOSITION, OnImeComposition) - MSG_WM_KEYDOWN(OnKeyDown) - MSG_WM_KEYUP(OnKeyUp) - MSG_WM_KILLFOCUS(OnKillFocus) - MSG_WM_LBUTTONDBLCLK(OnLButtonDblClk) - MSG_WM_LBUTTONDOWN(OnLButtonDown) - MSG_WM_LBUTTONUP(OnLButtonUp) - MSG_WM_MBUTTONDOWN(OnNonLButtonDown) - MSG_WM_MBUTTONUP(OnNonLButtonUp) - MSG_WM_MOUSEACTIVATE(OnMouseActivate) - MSG_WM_MOUSEMOVE(OnMouseMove) - MSG_WM_PAINT(OnPaint) - MSG_WM_PASTE(OnPaste) - MSG_WM_RBUTTONDOWN(OnNonLButtonDown) - MSG_WM_RBUTTONUP(OnNonLButtonUp) - MSG_WM_SETFOCUS(OnSetFocus) - MSG_WM_SYSCHAR(OnSysChar) // WM_SYSxxx == WM_xxx with ALT down - MSG_WM_SYSKEYDOWN(OnKeyDown) - MSG_WM_SYSKEYUP(OnKeyUp) - DEFAULT_REFLECTION_HANDLER() // avoids black margin area - END_MSG_MAP() - - // Menu::Delegate - virtual bool IsCommandEnabled(int id) const; - virtual bool GetContextualLabel(int id, std::wstring* out) const; - virtual void ExecuteCommand(int id); - - private: - // This object freezes repainting of the edit until the object is destroyed. - // Some methods of the CRichEditCtrl draw synchronously to the screen. If we - // don't freeze, the user will see a rapid series of calls to these as - // flickers. - // - // Freezing the control while it is already frozen is permitted; the control - // will unfreeze once both freezes are released (the freezes stack). - class ScopedFreeze { - public: - ScopedFreeze(AutocompleteEditView* edit, ITextDocument* text_object_model); - ~ScopedFreeze(); - - private: - AutocompleteEditView* const edit_; - ITextDocument* const text_object_model_; - - DISALLOW_COPY_AND_ASSIGN(ScopedFreeze); - }; - - // This object suspends placing any operations on the edit's undo stack until - // the object is destroyed. If we don't do this, some of the operations we - // perform behind the user's back will be undoable by the user, which feels - // bizarre and confusing. - class ScopedSuspendUndo { - public: - explicit ScopedSuspendUndo(ITextDocument* text_object_model); - ~ScopedSuspendUndo(); - - private: - ITextDocument* const text_object_model_; - - DISALLOW_COPY_AND_ASSIGN(ScopedSuspendUndo); - }; - - // Replacement word-breaking proc for the rich edit control. - static int CALLBACK WordBreakProc(LPTSTR edit_text, - int current_pos, - int num_bytes, - int action); - - // Returns true if |edit_text| starting at |current_pos| is "://". - static bool SchemeEnd(LPTSTR edit_text, int current_pos, int length); - - // Message handlers - void OnChar(TCHAR ch, UINT repeat_count, UINT flags); - void OnContextMenu(HWND window, const CPoint& point); - void OnCopy(); - void OnCut(); - LRESULT OnGetObject(UINT uMsg, WPARAM wparam, LPARAM lparam); - LRESULT OnImeComposition(UINT message, WPARAM wparam, LPARAM lparam); - void OnKeyDown(TCHAR key, UINT repeat_count, UINT flags); - void OnKeyUp(TCHAR key, UINT repeat_count, UINT flags); - void OnKillFocus(HWND focus_wnd); - void OnLButtonDblClk(UINT keys, const CPoint& point); - void OnLButtonDown(UINT keys, const CPoint& point); - void OnLButtonUp(UINT keys, const CPoint& point); - LRESULT OnMouseActivate(HWND window, UINT hit_test, UINT mouse_message); - void OnMouseMove(UINT keys, const CPoint& point); - void OnNonLButtonDown(UINT keys, const CPoint& point); - void OnNonLButtonUp(UINT keys, const CPoint& point); - void OnPaint(HDC bogus_hdc); - void OnPaste(); - void OnSetFocus(HWND focus_wnd); - void OnSysChar(TCHAR ch, UINT repeat_count, UINT flags); - - // Helper function for OnChar() and OnKeyDown() that handles keystrokes that - // could change the text in the edit. - void HandleKeystroke(UINT message, TCHAR key, UINT repeat_count, UINT flags); - - // Helper functions for OnKeyDown() that handle accelerators applicable when - // we're not read-only and all the time, respectively. These return true if - // they handled the key. - bool OnKeyDownOnlyWritable(TCHAR key, UINT repeat_count, UINT flags); - bool OnKeyDownAllModes(TCHAR key, UINT repeat_count, UINT flags); - - // Like GetSel(), but returns a range where |cpMin| will be larger than - // |cpMax| if the cursor is at the start rather than the end of the selection - // (in other words, tracks selection direction as well as offsets). - // Note the non-Google-style "non-const-ref" argument, which matches GetSel(). - void GetSelection(CHARRANGE& sel) const; - - // Returns the currently selected text of the edit control. - std::wstring GetSelectedText() const; - - // Like SetSel(), but respects the selection direction implied by |start| and - // |end|: if |end| < |start|, the effective cursor will be placed at the - // beginning of the selection. - void SetSelection(LONG start, LONG end); - - // Like SetSelection(), but takes a CHARRANGE. - void SetSelectionRange(const CHARRANGE& sel) { - SetSelection(sel.cpMin, sel.cpMax); - } - - // Places the caret at the given position. This clears any selection. - void PlaceCaretAt(size_t pos); - - // Returns true if |sel| represents a forward or backward selection of all the - // text. - bool IsSelectAllForRange(const CHARRANGE& sel) const; - - // Given an X coordinate in client coordinates, returns that coordinate - // clipped to be within the horizontal bounds of the visible text. - // - // This is used in our mouse handlers to work around quirky behaviors of the - // underlying CRichEditCtrl like not supporting triple-click when the user - // doesn't click on the text itself. - // - // |is_triple_click| should be true iff this is the third click of a triple - // click. Sadly, we need to clip slightly differently in this case. - LONG ClipXCoordToVisibleText(LONG x, bool is_triple_click) const; - - // Parses the contents of the control for the scheme and the host name. - // Highlights the scheme in green or red depending on it security level. - // If a host name is found, it makes it visually stronger. - void EmphasizeURLComponents(); - - // Erases the portion of the selection in the font's y-adjustment area. For - // some reason the edit draws the selection rect here even though it's not - // part of the font. - void EraseTopOfSelection(CDC* dc, - const CRect& client_rect, - const CRect& paint_clip_rect); - - // Draws a slash across the scheme if desired. - void DrawSlashForInsecureScheme(HDC hdc, - const CRect& client_rect, - const CRect& paint_clip_rect); - - // Renders the drop highlight. - void DrawDropHighlight(HDC hdc, - const CRect& client_rect, - const CRect& paint_clip_rect); - - // Internally invoked whenever the text changes in some way. - void TextChanged(); - - // Returns the current clipboard contents as a string that can be pasted in. - // In addition to just getting CF_UNICODETEXT out, this can also extract URLs - // from bookmarks on the clipboard. - std::wstring GetClipboardText() const; - - // Determines whether the user can "paste and go", given the specified text. - bool CanPasteAndGo(const std::wstring& text) const; - - // Getter for the text_object_model_, used by the ScopedXXX classes. Note - // that the pointer returned here is only valid as long as the - // AutocompleteEdit is still alive. Also, if the underlying call fails, this - // may return NULL. - ITextDocument* GetTextObjectModel() const; - - // Invoked during a mouse move. As necessary starts a drag and drop session. - void StartDragIfNecessary(const CPoint& point); - - // Invoked during a mouse down. If the mouse location is over the selection - // this sets possible_drag_ to true to indicate a drag should start if the - // user moves the mouse far enough to start a drag. - void OnPossibleDrag(const CPoint& point); - - // Invoked when a mouse button is released. If none of the buttons are still - // down, this sets possible_drag_ to false. - void UpdateDragDone(UINT keys); - - // Redraws the necessary region for a drop highlight at the specified - // position. This does nothing if position is beyond the bounds of the - // text. - void RepaintDropHighlight(int position); - - scoped_ptr<AutocompleteEditModel> model_; - - scoped_ptr<AutocompletePopupViewWin> popup_view_; - - AutocompleteEditController* controller_; - - // The parent view for the edit, used to align the popup and for - // accessibility. - views::View* parent_view_; - - ToolbarModel* toolbar_model_; - - // The object that handles additional command functionality exposed on the - // edit, such as invoking the keyword editor. - CommandUpdater* command_updater_; - - // When true, the location bar view is read only and also is has a slightly - // different presentation (font size / color). This is used for popups. - bool popup_window_mode_; - - // Non-null when the edit is gaining focus from a left click. This is only - // needed between when WM_MOUSEACTIVATE and WM_LBUTTONDOWN get processed. It - // serves two purposes: first, by communicating to OnLButtonDown() that we're - // gaining focus from a left click, it allows us to work even with the - // inconsistent order in which various Windows messages get sent (see comments - // in OnMouseActivate()). Second, by holding the edit frozen, it ensures that - // when we process WM_SETFOCUS the edit won't first redraw itself with the - // caret at the beginning, and then have it blink to where the mouse cursor - // really is shortly afterward. - scoped_ptr<ScopedFreeze> gaining_focus_; - - // When the user clicks to give us focus, we watch to see if they're clicking - // or dragging. When they're clicking, we select nothing until mouseup, then - // select all the text in the edit. During this process, tracking_click_ is - // true and mouse_down_point_ holds the original click location. At other - // times, tracking_click_ is false, and the contents of mouse_down_point_ - // should be ignored. - bool tracking_click_; - CPoint mouse_down_point_; - - // We need to know if the user triple-clicks, so track double click points - // and times so we can see if subsequent clicks are actually triple clicks. - bool tracking_double_click_; - CPoint double_click_point_; - DWORD double_click_time_; - - // Used to discard unnecessary WM_MOUSEMOVE events after the first such - // unnecessary event. See detailed comments in OnMouseMove(). - bool can_discard_mousemove_; - - // Variables for tracking state before and after a possible change. - std::wstring text_before_change_; - CHARRANGE sel_before_change_; - - // Set at the same time the model's original_* members are set, and valid in - // the same cases. - CHARRANGE original_selection_; - - // Holds the user's selection across focus changes. cpMin holds -1 when - // there is no saved selection. - CHARRANGE saved_selection_for_focus_change_; - - // The context menu for the edit. - scoped_ptr<Menu> context_menu_; - - // Font we're using. We keep a reference to make sure the font supplied to - // the constructor doesn't go away before we do. - ChromeFont font_; - - // Metrics about the font, which we keep so we don't need to recalculate them - // every time we paint. |font_y_adjustment_| is the number of pixels we need - // to shift the font vertically in order to make its baseline be at our - // desired baseline in the edit. - int font_ascent_; - int font_descent_; - int font_x_height_; - int font_y_adjustment_; - - // If true, indicates the mouse is down and if the mouse is moved enough we - // should start a drag. - bool possible_drag_; - - // If true, we're in a call to DoDragDrop. - bool in_drag_; - - // If true indicates we've run a drag and drop session. This is used to - // avoid starting two drag and drop sessions if the drag is canceled while - // the mouse is still down. - bool initiated_drag_; - - // Position of the drop highlight. If this is -1, there is no drop highlight. - int drop_highlight_position_; - - // Security UI-related data. - COLORREF background_color_; - ToolbarModel::SecurityLevel scheme_security_level_; - - // This interface is useful for accessing the CRichEditCtrl at a low level. - mutable CComQIPtr<ITextDocument> text_object_model_; - - // This contains the scheme char start and stop indexes that should be - // striken-out when displaying an insecure scheme. - url_parse::Component insecure_scheme_component_; - - // Instance of accessibility information and handling. - mutable CComPtr<IAccessible> autocomplete_accessibility_; - - DISALLOW_COPY_AND_ASSIGN(AutocompleteEditView); -}; - -// The AutocompleteEditState struct contains enough information about the -// AutocompleteEditModel and AutocompleteEditView to save/restore a user's -// typing, caret position, etc. across tab changes. We explicitly don't -// preserve things like whether the popup was open as this might be weird. -struct AutocompleteEditState { - AutocompleteEditState(const AutocompleteEditModel::State model_state, - const AutocompleteEditView::State view_state) - : model_state(model_state), - view_state(view_state) { - } - - const AutocompleteEditModel::State model_state; - const AutocompleteEditView::State view_state; -}; - #endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_H_ diff --git a/chrome/browser/autocomplete/autocomplete_edit_view.h b/chrome/browser/autocomplete/autocomplete_edit_view.h new file mode 100644 index 0000000..93982fe --- /dev/null +++ b/chrome/browser/autocomplete/autocomplete_edit_view.h @@ -0,0 +1,117 @@ +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// This file defines the interface class AutocompleteEditView. Each toolkit +// will implement the edit view differently, so that code is inheriently +// platform specific. However, the AutocompleteEditModel needs to do some +// communication with the view. Since the model is shared between platforms, +// we need to define an interface that all view implementations will share. + +#ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_H_ +#define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_H_ + +#include <string> + +#include "chrome/common/page_transition_types.h" +#include "webkit/glue/window_open_disposition.h" + +class AutocompleteEditModel; +class GURL; +class TabContents; + +class AutocompleteEditView { + public: + // Used by the automation system for getting at the model from the view. + virtual AutocompleteEditModel* model() = 0; + virtual const AutocompleteEditModel* model() const = 0; + + // For use when switching tabs, this saves the current state onto the tab so + // that it can be restored during a later call to Update(). + virtual void SaveStateToTab(TabContents* tab) = 0; + + // Called when any LocationBarView state changes. If + // |tab_for_state_restoring| is non-NULL, it points to a TabContents whose + // state we should restore. + virtual void Update(const TabContents* tab_for_state_restoring) = 0; + + // Asks the browser to load the specified URL, which is assumed to be one of + // the popup entries, using the supplied disposition and transition type. + // |alternate_nav_url|, if non-empty, contains the alternate navigation URL + // for |url|. See comments on AutocompleteResult::GetAlternateNavURL(). + // + // |selected_line| is passed to SendOpenNotification(); see comments there. + // + // If the URL was expanded from a keyword, |keyword| is that keyword. + // + // This may close the popup. + virtual void OpenURL(const GURL& url, + WindowOpenDisposition disposition, + PageTransition::Type transition, + const GURL& alternate_nav_url, + size_t selected_line, + const std::wstring& keyword) = 0; + + // Returns the current text of the edit control, which could be the + // "temporary" text set by the popup, the "permanent" text set by the + // browser, or just whatever the user has currently typed. + virtual std::wstring GetText() const = 0; + + // The user text is the text the user has manually keyed in. When present, + // this is shown in preference to the permanent text; hitting escape will + // revert to the permanent text. + virtual void SetUserText(const std::wstring& text) = 0; + virtual void SetUserText(const std::wstring& text, + const std::wstring& display_text, + bool update_popup) = 0; + + // Sets the window text and the caret position. + virtual void SetWindowTextAndCaretPos(const std::wstring& text, + size_t caret_pos) = 0; + + // Returns true if all text is selected. + virtual bool IsSelectAll() = 0; + + // Selects all the text in the edit. Use this in place of SetSelAll() to + // avoid selecting the "phantom newline" at the end of the edit. + virtual void SelectAll(bool reversed) = 0; + + // Reverts the edit and popup back to their unedited state (permanent text + // showing, popup closed, no user input in progress). + virtual void RevertAll() = 0; + + // Updates the autocomplete popup and other state after the text has been + // changed by the user. + virtual void UpdatePopup() = 0; + + // Closes the autocomplete popup, if it's open. + virtual void ClosePopup() = 0; + + // Called when the temporary text in the model may have changed. + // |display_text| is the new text to show; |save_original_selection| is true + // when there wasn't previously a temporary text and thus we need to save off + // the user's existing selection. + virtual void OnTemporaryTextMaybeChanged(const std::wstring& display_text, + bool save_original_selection) = 0; + + // Called when the inline autocomplete text in the model may have changed. + // |display_text| is the new text to show; |user_text_length| is the length of + // the user input portion of that (so, up to but not including the inline + // autocompletion). Returns whether the display text actually changed. + virtual bool OnInlineAutocompleteTextMaybeChanged( + const std::wstring& display_text, size_t user_text_length) = 0; + + // Called when the temporary text has been reverted by the user. This will + // reset the user's original selection. + virtual void OnRevertTemporaryText() = 0; + + // Every piece of code that can change the edit should call these functions + // before and after the change. These functions determine if anything + // meaningful changed, and do any necessary updating and notification. + virtual void OnBeforePossibleChange() = 0; + // OnAfterPossibleChange() returns true if there was a change that caused it + // to call UpdatePopup(). + virtual bool OnAfterPossibleChange() = 0; +}; + +#endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_H_ diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_win.cc b/chrome/browser/autocomplete/autocomplete_edit_view_win.cc new file mode 100644 index 0000000..339fc22 --- /dev/null +++ b/chrome/browser/autocomplete/autocomplete_edit_view_win.cc @@ -0,0 +1,2185 @@ +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "chrome/browser/autocomplete/autocomplete_edit_view_win.h" + +#include <locale> + +#include "base/base_drag_source.h" +#include "base/base_drop_target.h" +#include "base/basictypes.h" +#include "base/clipboard.h" +#include "base/iat_patch.h" +#include "base/lazy_instance.h" +#include "base/ref_counted.h" +#include "base/scoped_clipboard_writer.h" +#include "base/string_util.h" +#include "chrome/app/chrome_dll_resource.h" +#include "chrome/browser/autocomplete/autocomplete_accessibility.h" +#include "chrome/browser/autocomplete/autocomplete_popup_model.h" +#include "chrome/browser/autocomplete/autocomplete_popup_view_win.h" +#include "chrome/browser/autocomplete/edit_drop_target.h" +#include "chrome/browser/autocomplete/keyword_provider.h" +#include "chrome/browser/browser_process.h" +#include "chrome/browser/command_updater.h" +#include "chrome/browser/drag_utils.h" +#include "chrome/browser/metrics/user_metrics.h" +#include "chrome/browser/net/url_fixer_upper.h" +#include "chrome/browser/profile.h" +#include "chrome/browser/search_engines/template_url.h" +#include "chrome/browser/search_engines/template_url_model.h" +#include "chrome/browser/tab_contents/tab_contents.h" +#include "chrome/browser/views/location_bar_view.h" +#include "chrome/common/clipboard_service.h" +#include "chrome/common/gfx/chrome_canvas.h" +#include "chrome/common/gfx/utils.h" +#include "chrome/common/l10n_util.h" +#include "chrome/common/l10n_util_win.h" +#include "chrome/common/notification_service.h" +#include "chrome/common/os_exchange_data.h" +#include "chrome/common/win_util.h" +#include "googleurl/src/url_util.h" +#include "grit/generated_resources.h" +#include "skia/ext/skia_utils_win.h" + +#pragma comment(lib, "oleacc.lib") // Needed for accessibility support. + +/////////////////////////////////////////////////////////////////////////////// +// AutocompleteEditModel + +// A single AutocompleteController used solely for making synchronous calls to +// determine how to deal with the clipboard contents for Paste And Go +// functionality. We avoid using the popup's controller here because we don't +// want to interrupt in-progress queries or modify the popup state just +// because the user right-clicked the edit. We don't need a controller for +// every edit because this will always be accessed on the main thread, so we +// won't have thread-safety problems. +static AutocompleteController* paste_and_go_controller = NULL; +static int paste_and_go_controller_refcount = 0; + +namespace { + +// EditDropTarget is the IDropTarget implementation installed on +// AutocompleteEditViewWin. EditDropTarget prefers URL over plain text. A drop +// of a URL replaces all the text of the edit and navigates immediately to the +// URL. A drop of plain text from the same edit either copies or moves the +// selected text, and a drop of plain text from a source other than the edit +// does a paste and go. +class EditDropTarget : public BaseDropTarget { + public: + explicit EditDropTarget(AutocompleteEditViewWin* edit); + + protected: + virtual DWORD OnDragEnter(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect); + virtual DWORD OnDragOver(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect); + virtual void OnDragLeave(IDataObject* data_object); + virtual DWORD OnDrop(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect); + + private: + // If dragging a string, the drop highlight position of the edit is reset + // based on the mouse position. + void UpdateDropHighlightPosition(const POINT& cursor_screen_position); + + // Resets the visual drop indicates we install on the edit. + void ResetDropHighlights(); + + // The edit we're the drop target for. + AutocompleteEditViewWin* edit_; + + // If true, the drag session contains a URL. + bool drag_has_url_; + + // If true, the drag session contains a string. If drag_has_url_ is true, + // this is false regardless of whether the clipboard has a string. + bool drag_has_string_; + + DISALLOW_EVIL_CONSTRUCTORS(EditDropTarget); +}; + +// A helper method for determining a valid DROPEFFECT given the allowed +// DROPEFFECTS. We prefer copy over link. +DWORD CopyOrLinkDropEffect(DWORD effect) { + if (effect & DROPEFFECT_COPY) + return DROPEFFECT_COPY; + if (effect & DROPEFFECT_LINK) + return DROPEFFECT_LINK; + return DROPEFFECT_NONE; +} + +EditDropTarget::EditDropTarget(AutocompleteEditViewWin* edit) + : BaseDropTarget(edit->m_hWnd), + edit_(edit), + drag_has_url_(false), + drag_has_string_(false) { +} + +DWORD EditDropTarget::OnDragEnter(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect) { + OSExchangeData os_data(data_object); + drag_has_url_ = os_data.HasURL(); + drag_has_string_ = !drag_has_url_ && os_data.HasString(); + if (drag_has_url_) { + if (edit_->in_drag()) { + // The edit we're associated with originated the drag. No point in + // allowing the user to drop back on us. + drag_has_url_ = false; + } + // NOTE: it would be nice to visually show all the text is going to + // be replaced by selecting all, but this caused painting problems. In + // particular the flashing caret would appear outside the edit! For now + // we stick with no visual indicator other than that shown own the mouse + // cursor. + } + return OnDragOver(data_object, key_state, cursor_position, effect); +} + +DWORD EditDropTarget::OnDragOver(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect) { + if (drag_has_url_) + return CopyOrLinkDropEffect(effect); + + if (drag_has_string_) { + UpdateDropHighlightPosition(cursor_position); + if (edit_->drop_highlight_position() == -1 && edit_->in_drag()) + return DROPEFFECT_NONE; + if (edit_->in_drag()) { + // The edit we're associated with originated the drag. Do the normal drag + // behavior. + DCHECK((effect & DROPEFFECT_COPY) && (effect & DROPEFFECT_MOVE)); + return (key_state & MK_CONTROL) ? DROPEFFECT_COPY : DROPEFFECT_MOVE; + } + // Our edit didn't originate the drag, only allow link or copy. + return CopyOrLinkDropEffect(effect); + } + + return DROPEFFECT_NONE; +} + +void EditDropTarget::OnDragLeave(IDataObject* data_object) { + ResetDropHighlights(); +} + +DWORD EditDropTarget::OnDrop(IDataObject* data_object, + DWORD key_state, + POINT cursor_position, + DWORD effect) { + OSExchangeData os_data(data_object); + + if (drag_has_url_) { + GURL url; + std::wstring title; + if (os_data.GetURLAndTitle(&url, &title)) { + edit_->SetUserText(UTF8ToWide(url.spec())); + edit_->model()->AcceptInput(CURRENT_TAB, true); + return CopyOrLinkDropEffect(effect); + } + } else if (drag_has_string_) { + int string_drop_position = edit_->drop_highlight_position(); + std::wstring text; + if ((string_drop_position != -1 || !edit_->in_drag()) && + os_data.GetString(&text)) { + DCHECK(string_drop_position == -1 || + ((string_drop_position >= 0) && + (string_drop_position <= edit_->GetTextLength()))); + const DWORD drop_operation = + OnDragOver(data_object, key_state, cursor_position, effect); + if (edit_->in_drag()) { + if (drop_operation == DROPEFFECT_MOVE) + edit_->MoveSelectedText(string_drop_position); + else + edit_->InsertText(string_drop_position, text); + } else { + edit_->PasteAndGo(CollapseWhitespace(text, true)); + } + ResetDropHighlights(); + return drop_operation; + } + } + + ResetDropHighlights(); + + return DROPEFFECT_NONE; +} + +void EditDropTarget::UpdateDropHighlightPosition( + const POINT& cursor_screen_position) { + if (drag_has_string_) { + POINT client_position = cursor_screen_position; + ScreenToClient(edit_->m_hWnd, &client_position); + int drop_position = edit_->CharFromPos(client_position); + if (edit_->in_drag()) { + // Our edit originated the drag, don't allow a drop if over the selected + // region. + LONG sel_start, sel_end; + edit_->GetSel(sel_start, sel_end); + if ((sel_start != sel_end) && (drop_position >= sel_start) && + (drop_position <= sel_end)) + drop_position = -1; + } else { + // A drop from a source other than the edit replaces all the text, so + // we don't show the drop location. See comment in OnDragEnter as to why + // we don't try and select all here. + drop_position = -1; + } + edit_->SetDropHighlightPosition(drop_position); + } +} + +void EditDropTarget::ResetDropHighlights() { + if (drag_has_string_) + edit_->SetDropHighlightPosition(-1); +} + +// The AutocompleteEditState struct contains enough information about the +// AutocompleteEditModel and AutocompleteEditViewWin to save/restore a user's +// typing, caret position, etc. across tab changes. We explicitly don't +// preserve things like whether the popup was open as this might be weird. +struct AutocompleteEditState { + AutocompleteEditState(const AutocompleteEditModel::State model_state, + const AutocompleteEditViewWin::State view_state) + : model_state(model_state), + view_state(view_state) { + } + + const AutocompleteEditModel::State model_state; + const AutocompleteEditViewWin::State view_state; +}; + +} // namespace + +/////////////////////////////////////////////////////////////////////////////// +// Helper classes + +AutocompleteEditViewWin::ScopedFreeze::ScopedFreeze( + AutocompleteEditViewWin* edit, + ITextDocument* text_object_model) + : edit_(edit), + text_object_model_(text_object_model) { + // Freeze the screen. + if (text_object_model_) { + long count; + text_object_model_->Freeze(&count); + } +} + +AutocompleteEditViewWin::ScopedFreeze::~ScopedFreeze() { + // Unfreeze the screen. + // NOTE: If this destructor is reached while the edit is being destroyed (for + // example, because we double-clicked the edit of a popup and caused it to + // transform to an unconstrained window), it will no longer have an HWND, and + // text_object_model_ may point to a destroyed object, so do nothing here. + if (edit_->IsWindow() && text_object_model_) { + long count; + text_object_model_->Unfreeze(&count); + if (count == 0) { + // We need to UpdateWindow() here instead of InvalidateRect() because, as + // far as I can tell, the edit likes to synchronously erase its background + // when unfreezing, thus requiring us to synchronously redraw if we don't + // want flicker. + edit_->UpdateWindow(); + } + } +} + +AutocompleteEditViewWin::ScopedSuspendUndo::ScopedSuspendUndo( + ITextDocument* text_object_model) + : text_object_model_(text_object_model) { + // Suspend Undo processing. + if (text_object_model_) + text_object_model_->Undo(tomSuspend, NULL); +} + +AutocompleteEditViewWin::ScopedSuspendUndo::~ScopedSuspendUndo() { + // Resume Undo processing. + if (text_object_model_) + text_object_model_->Undo(tomResume, NULL); +} + +/////////////////////////////////////////////////////////////////////////////// +// AutocompleteEditViewWin + +// TODO (jcampan): these colors should be derived from the system colors to +// ensure they show properly. Bug #948807. +// Colors used to emphasize the scheme in the URL. + +namespace { + +const COLORREF kSecureSchemeColor = RGB(0, 150, 20); +const COLORREF kInsecureSchemeColor = RGB(200, 0, 0); + +// Colors used to strike-out the scheme when it is insecure. +const SkColor kSchemeStrikeoutColor = SkColorSetRGB(210, 0, 0); +const SkColor kSchemeSelectedStrikeoutColor = + SkColorSetRGB(255, 255, 255); + +// These are used to hook the CRichEditCtrl's calls to BeginPaint() and +// EndPaint() and provide a memory DC instead. See OnPaint(). +HWND edit_hwnd = NULL; +PAINTSTRUCT paint_struct; + +HDC BeginPaintIntercept(HWND hWnd, LPPAINTSTRUCT lpPaint) { + if (!edit_hwnd || (hWnd != edit_hwnd)) + return ::BeginPaint(hWnd, lpPaint); + + *lpPaint = paint_struct; + return paint_struct.hdc; +} + +BOOL EndPaintIntercept(HWND hWnd, const PAINTSTRUCT* lpPaint) { + return (edit_hwnd && (hWnd == edit_hwnd)) ? + true : ::EndPaint(hWnd, lpPaint); +} + +// Returns a lazily initialized property bag accessor for saving our state in a +// TabContents. +PropertyAccessor<AutocompleteEditState>* GetStateAccessor() { + static PropertyAccessor<AutocompleteEditState> state; + return &state; +} + +class PaintPatcher { + public: + PaintPatcher() : refcount_(0) { } + ~PaintPatcher() { DCHECK(refcount_ == 0); } + + void RefPatch() { + if (refcount_ == 0) { + DCHECK(!begin_paint_.is_patched()); + DCHECK(!end_paint_.is_patched()); + begin_paint_.Patch(L"riched20.dll", "user32.dll", "BeginPaint", + &BeginPaintIntercept); + end_paint_.Patch(L"riched20.dll", "user32.dll", "EndPaint", + &EndPaintIntercept); + } + ++refcount_; + } + + void DerefPatch() { + DCHECK(begin_paint_.is_patched()); + DCHECK(end_paint_.is_patched()); + --refcount_; + if (refcount_ == 0) { + begin_paint_.Unpatch(); + end_paint_.Unpatch(); + } + } + + private: + size_t refcount_; + iat_patch::IATPatchFunction begin_paint_; + iat_patch::IATPatchFunction end_paint_; + + DISALLOW_COPY_AND_ASSIGN(PaintPatcher); +}; + +base::LazyInstance<PaintPatcher> g_paint_patcher(base::LINKER_INITIALIZED); + +} // namespace + +AutocompleteEditViewWin::AutocompleteEditViewWin( + const ChromeFont& font, + AutocompleteEditController* controller, + ToolbarModel* toolbar_model, + views::View* parent_view, + HWND hwnd, + Profile* profile, + CommandUpdater* command_updater, + bool popup_window_mode) + : model_(new AutocompleteEditModel(this, controller, profile)), + popup_view_(new AutocompletePopupViewWin(font, this, model_.get(), + profile)), + controller_(controller), + parent_view_(parent_view), + toolbar_model_(toolbar_model), + command_updater_(command_updater), + popup_window_mode_(popup_window_mode), + tracking_click_(false), + tracking_double_click_(false), + double_click_time_(0), + can_discard_mousemove_(false), + font_(font), + possible_drag_(false), + in_drag_(false), + initiated_drag_(false), + drop_highlight_position_(-1), + background_color_(0), + scheme_security_level_(ToolbarModel::NORMAL) { + model_->set_popup_model(popup_view_->model()); + + saved_selection_for_focus_change_.cpMin = -1; + + g_paint_patcher.Pointer()->RefPatch(); + + Create(hwnd, 0, 0, 0, l10n_util::GetExtendedStyles()); + SetReadOnly(popup_window_mode_); + SetFont(font_.hfont()); + + // NOTE: Do not use SetWordBreakProcEx() here, that is no longer supported as + // of Rich Edit 2.0 onward. + SendMessage(m_hWnd, EM_SETWORDBREAKPROC, 0, + reinterpret_cast<LPARAM>(&WordBreakProc)); + + // Get the metrics for the font. + HDC dc = ::GetDC(NULL); + SelectObject(dc, font_.hfont()); + TEXTMETRIC tm = {0}; + GetTextMetrics(dc, &tm); + font_ascent_ = tm.tmAscent; + const float kXHeightRatio = 0.7f; // The ratio of a font's x-height to its + // cap height. Sadly, Windows doesn't + // provide a true value for a font's + // x-height in its text metrics, so we + // approximate. + font_x_height_ = static_cast<int>((static_cast<float>(font_ascent_ - + tm.tmInternalLeading) * kXHeightRatio) + 0.5); + // The distance from the top of the field to the desired baseline of the + // rendered text. + const int kTextBaseline = popup_window_mode_ ? 15 : 18; + font_y_adjustment_ = kTextBaseline - font_ascent_; + font_descent_ = tm.tmDescent; + + // Get the number of twips per pixel, which we need below to offset our text + // by the desired number of pixels. + const long kTwipsPerPixel = kTwipsPerInch / GetDeviceCaps(dc, LOGPIXELSY); + ::ReleaseDC(NULL, dc); + + // Set the default character style -- adjust to our desired baseline and make + // text grey. + CHARFORMAT cf = {0}; + cf.dwMask = CFM_OFFSET | CFM_COLOR; + cf.yOffset = -font_y_adjustment_ * kTwipsPerPixel; + cf.crTextColor = GetSysColor(COLOR_GRAYTEXT); + SetDefaultCharFormat(cf); + + // Set up context menu. + context_menu_.reset(new Menu(this, Menu::TOPLEFT, m_hWnd)); + if (popup_window_mode_) { + context_menu_->AppendMenuItemWithLabel(IDS_COPY, + l10n_util::GetString(IDS_COPY)); + } else { + context_menu_->AppendMenuItemWithLabel(IDS_UNDO, + l10n_util::GetString(IDS_UNDO)); + context_menu_->AppendSeparator(); + context_menu_->AppendMenuItemWithLabel(IDS_CUT, + l10n_util::GetString(IDS_CUT)); + context_menu_->AppendMenuItemWithLabel(IDS_COPY, + l10n_util::GetString(IDS_COPY)); + context_menu_->AppendMenuItemWithLabel(IDS_PASTE, + l10n_util::GetString(IDS_PASTE)); + // GetContextualLabel() will override this next label with the + // IDS_PASTE_AND_SEARCH label as needed. + context_menu_->AppendMenuItemWithLabel( + IDS_PASTE_AND_GO, l10n_util::GetString(IDS_PASTE_AND_GO)); + context_menu_->AppendSeparator(); + context_menu_->AppendMenuItemWithLabel( + IDS_SELECT_ALL, l10n_util::GetString(IDS_SELECT_ALL)); + context_menu_->AppendSeparator(); + context_menu_->AppendMenuItemWithLabel( + IDS_EDIT_SEARCH_ENGINES, l10n_util::GetString(IDS_EDIT_SEARCH_ENGINES)); + } + + // By default RichEdit has a drop target. Revoke it so that we can install our + // own. Revoke takes care of deleting the existing one. + RevokeDragDrop(m_hWnd); + + // Register our drop target. RichEdit appears to invoke RevokeDropTarget when + // done so that we don't have to explicitly. + if (!popup_window_mode_) { + scoped_refptr<EditDropTarget> drop_target = new EditDropTarget(this); + RegisterDragDrop(m_hWnd, drop_target.get()); + } +} + +AutocompleteEditViewWin::~AutocompleteEditViewWin() { + NotificationService::current()->Notify( + NotificationType::AUTOCOMPLETE_EDIT_DESTROYED, + Source<AutocompleteEditViewWin>(this), + NotificationService::NoDetails()); + + // We balance our reference count and unpatch when the last instance has + // been destroyed. This prevents us from relying on the AtExit or static + // destructor sequence to do our unpatching, which is generally fragile. + g_paint_patcher.Pointer()->DerefPatch(); +} + +void AutocompleteEditViewWin::SaveStateToTab(TabContents* tab) { + DCHECK(tab); + + const AutocompleteEditModel::State model_state( + model_->GetStateForTabSwitch()); + + CHARRANGE selection; + GetSelection(selection); + GetStateAccessor()->SetProperty(tab->property_bag(), + AutocompleteEditState( + model_state, + State(selection, saved_selection_for_focus_change_))); +} + +void AutocompleteEditViewWin::Update( + const TabContents* tab_for_state_restoring) { + const bool visibly_changed_permanent_text = + model_->UpdatePermanentText(toolbar_model_->GetText()); + + const ToolbarModel::SecurityLevel security_level = + toolbar_model_->GetSchemeSecurityLevel(); + const COLORREF background_color = + LocationBarView::kBackgroundColorByLevel[security_level]; + const bool changed_security_level = + (security_level != scheme_security_level_); + + // Bail early when no visible state will actually change (prevents an + // unnecessary ScopedFreeze, and thus UpdateWindow()). + if ((background_color == background_color_) && !changed_security_level && + !visibly_changed_permanent_text && !tab_for_state_restoring) + return; + + // Update our local state as desired. We set scheme_security_level_ here so + // it will already be correct before we get to any RevertAll()s below and use + // it. + ScopedFreeze freeze(this, GetTextObjectModel()); + if (background_color_ != background_color) { + background_color_ = background_color; + SetBackgroundColor(background_color_); + } + scheme_security_level_ = security_level; + + // When we're switching to a new tab, restore its state, if any. + if (tab_for_state_restoring) { + // Make sure we reset our own state first. The new tab may not have any + // saved state, or it may not have had input in progress, in which case we + // won't overwrite all our local state. + RevertAll(); + + const AutocompleteEditState* state = GetStateAccessor()->GetProperty( + tab_for_state_restoring->property_bag()); + if (state) { + model_->RestoreState(state->model_state); + + // Restore user's selection. We do this after restoring the user_text + // above so we're selecting in the correct string. + SetSelectionRange(state->view_state.selection); + saved_selection_for_focus_change_ = + state->view_state.saved_selection_for_focus_change; + } + } else if (visibly_changed_permanent_text) { + // Not switching tabs, just updating the permanent text. (In the case where + // we _were_ switching tabs, the RevertAll() above already drew the new + // permanent text.) + + // Tweak: if the edit was previously nonempty and had all the text selected, + // select all the new text. This makes one particular case better: the + // user clicks in the box to change it right before the permanent URL is + // changed. Since the new URL is still fully selected, the user's typing + // will replace the edit contents as they'd intended. + // + // NOTE: The selection can be longer than the text length if the edit is in + // in rich text mode and the user has selected the "phantom newline" at the + // end, so use ">=" instead of "==" to see if all the text is selected. In + // theory we prevent this case from ever occurring, but this is still safe. + CHARRANGE sel; + GetSelection(sel); + const bool was_reversed = (sel.cpMin > sel.cpMax); + const bool was_sel_all = (sel.cpMin != sel.cpMax) && + IsSelectAllForRange(sel); + + RevertAll(); + + if (was_sel_all) + SelectAll(was_reversed); + } else if (changed_security_level) { + // Only the security style changed, nothing else. Redraw our text using it. + EmphasizeURLComponents(); + } +} + +void AutocompleteEditViewWin::OpenURL(const GURL& url, + WindowOpenDisposition disposition, + PageTransition::Type transition, + const GURL& alternate_nav_url, + size_t selected_line, + const std::wstring& keyword) { + if (!url.is_valid()) + return; + + model_->SendOpenNotification(selected_line, keyword); + + ScopedFreeze freeze(this, GetTextObjectModel()); + if (disposition != NEW_BACKGROUND_TAB) + RevertAll(); // Revert the box to its unedited state + controller_->OnAutocompleteAccept(url, disposition, transition, + alternate_nav_url); +} + +std::wstring AutocompleteEditViewWin::GetText() const { + const int len = GetTextLength() + 1; + std::wstring str; + GetWindowText(WriteInto(&str, len), len); + return str; +} + +void AutocompleteEditViewWin::SetUserText(const std::wstring& text, + const std::wstring& display_text, + bool update_popup) { + ScopedFreeze freeze(this, GetTextObjectModel()); + model_->SetUserText(text); + saved_selection_for_focus_change_.cpMin = -1; + SetWindowTextAndCaretPos(display_text, display_text.length()); + if (update_popup) + UpdatePopup(); + TextChanged(); +} + +void AutocompleteEditViewWin::SetWindowTextAndCaretPos(const std::wstring& text, + size_t caret_pos) { + HIMC imm_context = ImmGetContext(m_hWnd); + if (imm_context) { + // In Windows Vista, SetWindowText() automatically completes any ongoing + // IME composition, and updates the text of the underlying edit control. + // In Windows XP, however, SetWindowText() gets applied to the IME + // composition string if it exists, and doesn't update the underlying edit + // control. To avoid this, we force the IME to complete any outstanding + // compositions here. This is harmless in Vista and in cases where the IME + // isn't composing. + ImmNotifyIME(imm_context, NI_COMPOSITIONSTR, CPS_COMPLETE, 0); + ImmReleaseContext(m_hWnd, imm_context); + } + + SetWindowText(text.c_str()); + PlaceCaretAt(caret_pos); +} + +bool AutocompleteEditViewWin::IsSelectAll() { + CHARRANGE selection; + GetSel(selection); + return IsSelectAllForRange(selection); +} + +void AutocompleteEditViewWin::SelectAll(bool reversed) { + if (reversed) + SetSelection(GetTextLength(), 0); + else + SetSelection(0, GetTextLength()); +} + +void AutocompleteEditViewWin::RevertAll() { + ScopedFreeze freeze(this, GetTextObjectModel()); + ClosePopup(); + model_->Revert(); + saved_selection_for_focus_change_.cpMin = -1; + TextChanged(); +} + +void AutocompleteEditViewWin::UpdatePopup() { + ScopedFreeze freeze(this, GetTextObjectModel()); + model_->SetInputInProgress(true); + + if (!model_->has_focus()) { + // When we're in the midst of losing focus, don't rerun autocomplete. This + // can happen when losing focus causes the IME to cancel/finalize a + // composition. We still want to note that user input is in progress, we + // just don't want to do anything else. + // + // Note that in this case the ScopedFreeze above was unnecessary; however, + // we're inside the callstack of OnKillFocus(), which has already frozen the + // edit, so this will never result in an unnecessary UpdateWindow() call. + return; + } + + // Figure out whether the user is trying to compose something in an IME. + bool ime_composing = false; + HIMC context = ImmGetContext(m_hWnd); + if (context) { + ime_composing = !!ImmGetCompositionString(context, GCS_COMPSTR, NULL, 0); + ImmReleaseContext(m_hWnd, context); + } + + // Don't inline autocomplete when: + // * The user is deleting text + // * The caret/selection isn't at the end of the text + // * The user has just pasted in something that replaced all the text + // * The user is trying to compose something in an IME + CHARRANGE sel; + GetSel(sel); + model_->StartAutocomplete((sel.cpMax < GetTextLength()) || ime_composing); +} + +void AutocompleteEditViewWin::ClosePopup() { + popup_view_->model()->StopAutocomplete(); +} + +IAccessible* AutocompleteEditViewWin::GetIAccessible() { + if (!autocomplete_accessibility_) { + CComObject<AutocompleteAccessibility>* accessibility = NULL; + if (!SUCCEEDED(CComObject<AutocompleteAccessibility>::CreateInstance( + &accessibility)) || !accessibility) + return NULL; + + // Wrap the created object in a smart pointer so it won't leak. + CComPtr<IAccessible> accessibility_comptr(accessibility); + if (!SUCCEEDED(accessibility->Initialize(this))) + return NULL; + + // Copy to the class smart pointer, and notify that an instance of + // IAccessible was allocated for m_hWnd. + autocomplete_accessibility_ = accessibility_comptr; + NotifyWinEvent(EVENT_OBJECT_CREATE, m_hWnd, OBJID_CLIENT, CHILDID_SELF); + } + // Detach to leave ref counting to the caller. + return autocomplete_accessibility_.Detach(); +} + +void AutocompleteEditViewWin::SetDropHighlightPosition(int position) { + if (drop_highlight_position_ != position) { + RepaintDropHighlight(drop_highlight_position_); + drop_highlight_position_ = position; + RepaintDropHighlight(drop_highlight_position_); + } +} + +void AutocompleteEditViewWin::MoveSelectedText(int new_position) { + const std::wstring selected_text(GetSelectedText()); + CHARRANGE sel; + GetSel(sel); + DCHECK((sel.cpMax != sel.cpMin) && (new_position >= 0) && + (new_position <= GetTextLength())); + + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + + // Nuke the selected text. + ReplaceSel(L"", TRUE); + + // And insert it into the new location. + if (new_position >= sel.cpMin) + new_position -= (sel.cpMax - sel.cpMin); + PlaceCaretAt(new_position); + ReplaceSel(selected_text.c_str(), TRUE); + + OnAfterPossibleChange(); +} + +void AutocompleteEditViewWin::InsertText(int position, + const std::wstring& text) { + DCHECK((position >= 0) && (position <= GetTextLength())); + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + SetSelection(position, position); + ReplaceSel(text.c_str()); + OnAfterPossibleChange(); +} + +void AutocompleteEditViewWin::OnTemporaryTextMaybeChanged( + const std::wstring& display_text, + bool save_original_selection) { + if (save_original_selection) + GetSelection(original_selection_); + + // Set new text and cursor position. Sometimes this does extra work (e.g. + // when the new text and the old text are identical), but it's only called + // when the user manually changes the selected line in the popup, so that's + // not really a problem. Also, even when the text hasn't changed we'd want to + // update the caret, because if the user had the cursor in the middle of the + // text and then arrowed to another entry with the same text, we'd still want + // to move the caret. + ScopedFreeze freeze(this, GetTextObjectModel()); + SetWindowTextAndCaretPos(display_text, display_text.length()); + TextChanged(); +} + +bool AutocompleteEditViewWin::OnInlineAutocompleteTextMaybeChanged( + const std::wstring& display_text, + size_t user_text_length) { + // Update the text and selection. Because this can be called repeatedly while + // typing, we've careful not to freeze the edit unless we really need to. + // Also, unlike in the temporary text case above, here we don't want to update + // the caret/selection unless we have to, since this might make the user's + // caret position change without warning during typing. + if (display_text == GetText()) + return false; + + ScopedFreeze freeze(this, GetTextObjectModel()); + // NOTE: We don't need the IME composition hack in SetWindowTextAndCaretPos() + // here, because UpdatePopup() disables inline autocomplete when a + // composition is in progress, thus preventing us from reaching this code. + SetWindowText(display_text.c_str()); + // Set a reversed selection to keep the caret in the same position, which + // avoids scrolling the user's text. + SetSelection(static_cast<LONG>(display_text.length()), + static_cast<LONG>(user_text_length)); + TextChanged(); + return true; +} + +void AutocompleteEditViewWin::OnRevertTemporaryText() { + SetSelectionRange(original_selection_); + TextChanged(); +} + +void AutocompleteEditViewWin::OnBeforePossibleChange() { + // Record our state. + text_before_change_ = GetText(); + GetSelection(sel_before_change_); +} + +bool AutocompleteEditViewWin::OnAfterPossibleChange() { + // Prevent the user from selecting the "phantom newline" at the end of the + // edit. If they try, we just silently move the end of the selection back to + // the end of the real text. + CHARRANGE new_sel; + GetSelection(new_sel); + const int length = GetTextLength(); + if ((new_sel.cpMin > length) || (new_sel.cpMax > length)) { + if (new_sel.cpMin > length) + new_sel.cpMin = length; + if (new_sel.cpMax > length) + new_sel.cpMax = length; + SetSelectionRange(new_sel); + } + const bool selection_differs = (new_sel.cpMin != sel_before_change_.cpMin) || + (new_sel.cpMax != sel_before_change_.cpMax); + const bool at_end_of_edit = + (new_sel.cpMin == length) && (new_sel.cpMax == length); + + // See if the text or selection have changed since OnBeforePossibleChange(). + const std::wstring new_text(GetText()); + const bool text_differs = (new_text != text_before_change_); + + // When the user has deleted text, we don't allow inline autocomplete. Make + // sure to not flag cases like selecting part of the text and then pasting + // (or typing) the prefix of that selection. (We detect these by making + // sure the caret, which should be after any insertion, hasn't moved + // forward of the old selection start.) + const bool just_deleted_text = + (text_before_change_.length() > new_text.length()) && + (new_sel.cpMin <= std::min(sel_before_change_.cpMin, + sel_before_change_.cpMax)); + + + const bool something_changed = model_->OnAfterPossibleChange(new_text, + selection_differs, text_differs, just_deleted_text, at_end_of_edit); + + if (something_changed && text_differs) + TextChanged(); + + return something_changed; +} + +void AutocompleteEditViewWin::PasteAndGo(const std::wstring& text) { + if (CanPasteAndGo(text)) + model_->PasteAndGo(); +} + +bool AutocompleteEditViewWin::OverrideAccelerator( + const views::Accelerator& accelerator) { + // Only override <esc>. + if ((accelerator.GetKeyCode() != VK_ESCAPE) || accelerator.IsAltDown()) + return false; + + ScopedFreeze freeze(this, GetTextObjectModel()); + return model_->OnEscapeKeyPressed(); +} + +void AutocompleteEditViewWin::HandleExternalMsg(UINT msg, + UINT flags, + const CPoint& screen_point) { + if (msg == WM_CAPTURECHANGED) { + SendMessage(msg, 0, NULL); + return; + } + + CPoint client_point(screen_point); + ::MapWindowPoints(NULL, m_hWnd, &client_point, 1); + SendMessage(msg, flags, MAKELPARAM(client_point.x, client_point.y)); +} + +bool AutocompleteEditViewWin::IsCommandEnabled(int id) const { + switch (id) { + case IDS_UNDO: return !!CanUndo(); + case IDS_CUT: return !!CanCut(); + case IDS_COPY: return !!CanCopy(); + case IDS_PASTE: return !!CanPaste(); + case IDS_PASTE_AND_GO: return CanPasteAndGo(GetClipboardText()); + case IDS_SELECT_ALL: return !!CanSelectAll(); + case IDS_EDIT_SEARCH_ENGINES: + return command_updater_->IsCommandEnabled(IDC_EDIT_SEARCH_ENGINES); + default: NOTREACHED(); return false; + } +} + +bool AutocompleteEditViewWin::GetContextualLabel(int id, + std::wstring* out) const { + if ((id != IDS_PASTE_AND_GO) || + // No need to change the default IDS_PASTE_AND_GO label unless this is a + // search. + !model_->is_paste_and_search()) + return false; + + out->assign(l10n_util::GetString(IDS_PASTE_AND_SEARCH)); + return true; +} + +void AutocompleteEditViewWin::ExecuteCommand(int id) { + ScopedFreeze freeze(this, GetTextObjectModel()); + if (id == IDS_PASTE_AND_GO) { + // This case is separate from the switch() below since we don't want to wrap + // it in OnBefore/AfterPossibleChange() calls. + model_->PasteAndGo(); + return; + } + + OnBeforePossibleChange(); + switch (id) { + case IDS_UNDO: + Undo(); + break; + + case IDS_CUT: + Cut(); + break; + + case IDS_COPY: + Copy(); + break; + + case IDS_PASTE: + Paste(); + break; + + case IDS_SELECT_ALL: + SelectAll(false); + break; + + case IDS_EDIT_SEARCH_ENGINES: + command_updater_->ExecuteCommand(IDC_EDIT_SEARCH_ENGINES); + break; + + default: + NOTREACHED(); + break; + } + OnAfterPossibleChange(); +} + +// static +int CALLBACK AutocompleteEditViewWin::WordBreakProc(LPTSTR edit_text, + int current_pos, + int num_bytes, + int action) { + // TODO(pkasting): http://b/1111308 We should let other people, like ICU and + // GURL, do the work for us here instead of writing all this ourselves. + + // Sadly, even though the MSDN docs claim that the third parameter here is a + // number of characters, they lie. It's a number of bytes. + const int length = num_bytes / sizeof(wchar_t); + + // With no clear guidance from the MSDN docs on how to handle "not found" in + // the "find the nearest xxx..." cases below, I cap the return values at + // [0, length]. Since one of these (0) is also a valid position, the return + // values are thus ambiguous :( + switch (action) { + // Find nearest character before current position that begins a word. + case WB_LEFT: + case WB_MOVEWORDLEFT: { + if (current_pos < 2) { + // Either current_pos == 0, so we have a "not found" case and return 0, + // or current_pos == 1, and the only character before this position is + // at 0. + return 0; + } + + // Look for a delimiter before the previous character; the previous word + // starts immediately after. (If we looked for a delimiter before the + // current character, we could stop on the immediate prior character, + // which would mean we'd return current_pos -- which isn't "before the + // current position".) + const int prev_delim = + WordBreakProc(edit_text, current_pos - 1, num_bytes, WB_LEFTBREAK); + + if ((prev_delim == 0) && + !WordBreakProc(edit_text, 0, num_bytes, WB_ISDELIMITER)) { + // Got back 0, but position 0 isn't a delimiter. This was a "not + // found" 0, so return one of our own. + return 0; + } + + return prev_delim + 1; + } + + // Find nearest character after current position that begins a word. + case WB_RIGHT: + case WB_MOVEWORDRIGHT: { + if (WordBreakProc(edit_text, current_pos, num_bytes, WB_ISDELIMITER)) { + // The current character is a delimiter, so the next character starts + // a new word. Done. + return current_pos + 1; + } + + // Look for a delimiter after the current character; the next word starts + // immediately after. + const int next_delim = + WordBreakProc(edit_text, current_pos, num_bytes, WB_RIGHTBREAK); + if (next_delim == length) { + // Didn't find a delimiter. Return length to signal "not found". + return length; + } + + return next_delim + 1; + } + + // Determine if the current character delimits words. + case WB_ISDELIMITER: + return !!(WordBreakProc(edit_text, current_pos, num_bytes, WB_CLASSIFY) & + WBF_BREAKLINE); + + // Return the classification of the current character. + case WB_CLASSIFY: + if (IsWhitespace(edit_text[current_pos])) { + // Whitespace normally breaks words, but the MSDN docs say that we must + // not break on the CRs in a "CR, LF" or a "CR, CR, LF" sequence. Just + // check for an arbitrarily long sequence of CRs followed by LF and + // report "not a delimiter" for the current CR in that case. + while ((current_pos < (length - 1)) && + (edit_text[current_pos] == 0x13)) { + if (edit_text[++current_pos] == 0x10) + return WBF_ISWHITE; + } + return WBF_BREAKLINE | WBF_ISWHITE; + } + + // Punctuation normally breaks words, but the first two characters in + // "://" (end of scheme) should not be breaks, so that "http://" will be + // treated as one word. + if (ispunct(edit_text[current_pos], std::locale()) && + !SchemeEnd(edit_text, current_pos, length) && + !SchemeEnd(edit_text, current_pos - 1, length)) + return WBF_BREAKLINE; + + // Normal character, no flags. + return 0; + + // Finds nearest delimiter before current position. + case WB_LEFTBREAK: + for (int i = current_pos - 1; i >= 0; --i) { + if (WordBreakProc(edit_text, i, num_bytes, WB_ISDELIMITER)) + return i; + } + return 0; + + // Finds nearest delimiter after current position. + case WB_RIGHTBREAK: + for (int i = current_pos + 1; i < length; ++i) { + if (WordBreakProc(edit_text, i, num_bytes, WB_ISDELIMITER)) + return i; + } + return length; + } + + NOTREACHED(); + return 0; +} + +// static +bool AutocompleteEditViewWin::SchemeEnd(LPTSTR edit_text, + int current_pos, + int length) { + return (current_pos >= 0) && + ((length - current_pos) > 2) && + (edit_text[current_pos] == ':') && + (edit_text[current_pos + 1] == '/') && + (edit_text[current_pos + 2] == '/'); +} + +void AutocompleteEditViewWin::OnChar(TCHAR ch, UINT repeat_count, UINT flags) { + // Don't let alt-enter beep. Not sure this is necessary, as the standard + // alt-enter will hit DiscardWMSysChar() and get thrown away, and + // ctrl-alt-enter doesn't seem to reach here for some reason? At least not on + // my system... still, this is harmless and maybe necessary in other locales. + if (ch == VK_RETURN && (flags & KF_ALTDOWN)) + return; + + // Escape is processed in OnKeyDown. Don't let any WM_CHAR messages propagate + // as we don't want the RichEdit to do anything funky. + if (ch == VK_ESCAPE && !(flags & KF_ALTDOWN)) + return; + + if (ch == VK_TAB) { + // Don't add tabs to the input. + return; + } + + HandleKeystroke(GetCurrentMessage()->message, ch, repeat_count, flags); +} + +void AutocompleteEditViewWin::OnContextMenu(HWND window, const CPoint& point) { + if (point.x == -1 || point.y == -1) { + POINT p; + GetCaretPos(&p); + MapWindowPoints(HWND_DESKTOP, &p, 1); + context_menu_->RunMenuAt(p.x, p.y); + } else { + context_menu_->RunMenuAt(point.x, point.y); + } +} + +void AutocompleteEditViewWin::OnCopy() { + const std::wstring text(GetSelectedText()); + if (text.empty()) + return; + + ScopedClipboardWriter scw(g_browser_process->clipboard_service()); + scw.WriteText(text); + + // Check if the user is copying the whole address bar. If they are, we + // assume they are trying to copy a URL and write this to the clipboard as a + // hyperlink. + if (static_cast<int>(text.length()) < GetTextLength()) + return; + + // The entire control is selected. Let's see what the user typed. We can't + // use model_->CurrentTextIsURL() or model_->GetDataForURLExport() because + // right now the user is probably holding down control to cause the copy, + // which will screw up our calculation of the desired_tld. + GURL url; + if (model_->GetURLForText(text, &url)) + scw.WriteHyperlink(text, url.spec()); +} + +void AutocompleteEditViewWin::OnCut() { + OnCopy(); + + // This replace selection will have no effect (even on the undo stack) if the + // current selection is empty. + ReplaceSel(L"", true); +} + +LRESULT AutocompleteEditViewWin::OnGetObject(UINT uMsg, + WPARAM wparam, + LPARAM lparam) { + // Accessibility readers will send an OBJID_CLIENT message. + if (lparam == OBJID_CLIENT) { + // Re-attach for internal re-usage of accessibility pointer. + autocomplete_accessibility_.Attach(GetIAccessible()); + + if (autocomplete_accessibility_) { + return LresultFromObject(IID_IAccessible, wparam, + autocomplete_accessibility_.p); + } + } + return 0; +} + +LRESULT AutocompleteEditViewWin::OnImeComposition(UINT message, + WPARAM wparam, + LPARAM lparam) { + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + LRESULT result = DefWindowProc(message, wparam, lparam); + if (!OnAfterPossibleChange() && (lparam & GCS_RESULTSTR)) { + // The result string changed, but the text in the popup didn't actually + // change. This means the user finalized the composition. Rerun + // autocomplete so that we can now trigger inline autocomplete if + // applicable. + // + // Note that if we're in the midst of losing focus, UpdatePopup() won't + // actually rerun autocomplete, but will just set local state correctly. + UpdatePopup(); + } + return result; +} + +void AutocompleteEditViewWin::OnKeyDown(TCHAR key, + UINT repeat_count, + UINT flags) { + if (OnKeyDownAllModes(key, repeat_count, flags) || popup_window_mode_ || + OnKeyDownOnlyWritable(key, repeat_count, flags)) + return; + + // CRichEditCtrl changes its text on WM_KEYDOWN instead of WM_CHAR for many + // different keys (backspace, ctrl-v, ...), so we call this in both cases. + HandleKeystroke(GetCurrentMessage()->message, key, repeat_count, flags); +} + +void AutocompleteEditViewWin::OnKeyUp(TCHAR key, + UINT repeat_count, + UINT flags) { + if (key == VK_CONTROL) + model_->OnControlKeyChanged(false); + + SetMsgHandled(false); +} + +void AutocompleteEditViewWin::OnKillFocus(HWND focus_wnd) { + if (m_hWnd == focus_wnd) { + // Focus isn't actually leaving. + SetMsgHandled(false); + return; + } + + // Close the popup. + ClosePopup(); + + // Save the user's existing selection to restore it later. + GetSelection(saved_selection_for_focus_change_); + + // Tell the model to reset itself. + model_->OnKillFocus(); + + // Let the CRichEditCtrl do its default handling. This will complete any + // in-progress IME composition. We must do this after setting has_focus_ to + // false so that UpdatePopup() will know not to rerun autocomplete. + ScopedFreeze freeze(this, GetTextObjectModel()); + DefWindowProc(WM_KILLFOCUS, reinterpret_cast<WPARAM>(focus_wnd), 0); + + // Hide the "Type to search" hint if necessary. We do this after calling + // DefWindowProc() because processing the resulting IME messages may notify + // the controller that input is in progress, which could cause the visible + // hints to change. (I don't know if there's a real scenario where they + // actually do change, but this is safest.) + if (model_->show_search_hint() || + (model_->is_keyword_hint() && !model_->keyword().empty())) + controller_->OnChanged(); + + // Cancel any user selection and scroll the text back to the beginning of the + // URL. We have to do this after calling DefWindowProc() because otherwise + // an in-progress IME composition will be completed at the new caret position, + // resulting in the string jumping unexpectedly to the front of the edit. + PlaceCaretAt(0); +} + +void AutocompleteEditViewWin::OnLButtonDblClk(UINT keys, const CPoint& point) { + // Save the double click info for later triple-click detection. + tracking_double_click_ = true; + double_click_point_ = point; + double_click_time_ = GetCurrentMessage()->time; + possible_drag_ = false; + + // Modifying the selection counts as accepting any inline autocompletion, so + // track "changes" made by clicking the mouse button. + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + DefWindowProc(WM_LBUTTONDBLCLK, keys, + MAKELPARAM(ClipXCoordToVisibleText(point.x, false), point.y)); + OnAfterPossibleChange(); + + gaining_focus_.reset(); // See NOTE in OnMouseActivate(). +} + +void AutocompleteEditViewWin::OnLButtonDown(UINT keys, const CPoint& point) { + if (gaining_focus_.get()) { + // This click is giving us focus, so we need to track how much the mouse + // moves to see if it's a drag or just a click. Clicks should select all + // the text. + tracking_click_ = true; + mouse_down_point_ = point; + + // When Chrome was already the activated app, we haven't reached + // OnSetFocus() yet. When we get there, don't restore the saved selection, + // since it will just screw up the user's interaction with the edit. + saved_selection_for_focus_change_.cpMin = -1; + + // Crazy hack: In this particular case, the CRichEditCtrl seems to have an + // internal flag that discards the next WM_LBUTTONDOWN without processing + // it, so that clicks on the edit when its owning app is not activated are + // eaten rather than processed (despite whatever the return value of + // DefWindowProc(WM_MOUSEACTIVATE, ...) may say). This behavior is + // confusing and we want the click to be treated normally. So, to reset the + // CRichEditCtrl's internal flag, we pass it an extra WM_LBUTTONDOWN here + // (as well as a matching WM_LBUTTONUP, just in case we'd be confusing some + // kind of state tracking otherwise). + DefWindowProc(WM_LBUTTONDOWN, keys, MAKELPARAM(point.x, point.y)); + DefWindowProc(WM_LBUTTONUP, keys, MAKELPARAM(point.x, point.y)); + } + + // Check for triple click, then reset tracker. Should be safe to subtract + // double_click_time_ from the current message's time even if the timer has + // wrapped in between. + const bool is_triple_click = tracking_double_click_ && + win_util::IsDoubleClick(double_click_point_, point, + GetCurrentMessage()->time - double_click_time_); + tracking_double_click_ = false; + + if (!gaining_focus_.get() && !is_triple_click) + OnPossibleDrag(point); + + + // Modifying the selection counts as accepting any inline autocompletion, so + // track "changes" made by clicking the mouse button. + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + DefWindowProc(WM_LBUTTONDOWN, keys, + MAKELPARAM(ClipXCoordToVisibleText(point.x, is_triple_click), + point.y)); + OnAfterPossibleChange(); + + gaining_focus_.reset(); +} + +void AutocompleteEditViewWin::OnLButtonUp(UINT keys, const CPoint& point) { + // default processing should happen first so we can see the result of the + // selection + ScopedFreeze freeze(this, GetTextObjectModel()); + DefWindowProc(WM_LBUTTONUP, keys, + MAKELPARAM(ClipXCoordToVisibleText(point.x, false), point.y)); + + // When the user has clicked and released to give us focus, select all. + if (tracking_click_ && !win_util::IsDrag(mouse_down_point_, point)) { + // Select all in the reverse direction so as not to scroll the caret + // into view and shift the contents jarringly. + SelectAll(true); + possible_drag_ = false; + } + + tracking_click_ = false; + + UpdateDragDone(keys); +} + +LRESULT AutocompleteEditViewWin::OnMouseActivate(HWND window, + UINT hit_test, + UINT mouse_message) { + // First, give other handlers a chance to handle the message to see if we are + // actually going to activate and gain focus. + LRESULT result = DefWindowProc(WM_MOUSEACTIVATE, + reinterpret_cast<WPARAM>(window), + MAKELPARAM(hit_test, mouse_message)); + // Check if we're getting focus from a left click. We have to do this here + // rather than in OnLButtonDown() since in many scenarios OnSetFocus() will be + // reached before OnLButtonDown(), preventing us from detecting this properly + // there. Also in those cases, we need to already know in OnSetFocus() that + // we should not restore the saved selection. + if (!model_->has_focus() && (mouse_message == WM_LBUTTONDOWN) && + (result == MA_ACTIVATE)) { + DCHECK(!gaining_focus_.get()); + gaining_focus_.reset(new ScopedFreeze(this, GetTextObjectModel())); + // NOTE: Despite |mouse_message| being WM_LBUTTONDOWN here, we're not + // guaranteed to call OnLButtonDown() later! Specifically, if this is the + // second click of a double click, we'll reach here but later call + // OnLButtonDblClk(). Make sure |gaining_focus_| gets reset both places, or + // we'll have visual glitchiness and then DCHECK failures. + + // Don't restore saved selection, it will just screw up our interaction + // with this edit. + saved_selection_for_focus_change_.cpMin = -1; + } + return result; +} + +void AutocompleteEditViewWin::OnMouseMove(UINT keys, const CPoint& point) { + if (possible_drag_) { + StartDragIfNecessary(point); + // Don't fall through to default mouse handling, otherwise a second + // drag session may start. + return; + } + + if (tracking_click_ && !win_util::IsDrag(mouse_down_point_, point)) + return; + + tracking_click_ = false; + + // Return quickly if this can't change the selection/cursor, so we don't + // create a ScopedFreeze (and thus do an UpdateWindow()) on every + // WM_MOUSEMOVE. + if (!(keys & MK_LBUTTON)) { + DefWindowProc(WM_MOUSEMOVE, keys, MAKELPARAM(point.x, point.y)); + return; + } + + // Clamp the selection to the visible text so the user can't drag to select + // the "phantom newline". In theory we could achieve this by clipping the X + // coordinate, but in practice the edit seems to behave nondeterministically + // with similar sequences of clipped input coordinates fed to it. Maybe it's + // reading the mouse cursor position directly? + // + // This solution has a minor visual flaw, however: if there's a visible cursor + // at the edge of the text (only true when there's no selection), dragging the + // mouse around outside that edge repaints the cursor on every WM_MOUSEMOVE + // instead of allowing it to blink normally. To fix this, we special-case + // this exact case and discard the WM_MOUSEMOVE messages instead of passing + // them along. + // + // But even this solution has a flaw! (Argh.) In the case where the user has + // a selection that starts at the edge of the edit, and proceeds to the middle + // of the edit, and the user is dragging back past the start edge to remove + // the selection, there's a redraw problem where the change between having the + // last few bits of text still selected and having nothing selected can be + // slow to repaint (which feels noticeably strange). This occurs if you only + // let the edit receive a single WM_MOUSEMOVE past the edge of the text. I + // think on each WM_MOUSEMOVE the edit is repainting its previous state, then + // updating its internal variables to the new state but not repainting. To + // fix this, we allow one more WM_MOUSEMOVE through after the selection has + // supposedly been shrunk to nothing; this makes the edit redraw the selection + // quickly so it feels smooth. + CHARRANGE selection; + GetSel(selection); + const bool possibly_can_discard_mousemove = + (selection.cpMin == selection.cpMax) && + (((selection.cpMin == 0) && + (ClipXCoordToVisibleText(point.x, false) > point.x)) || + ((selection.cpMin == GetTextLength()) && + (ClipXCoordToVisibleText(point.x, false) < point.x))); + if (!can_discard_mousemove_ || !possibly_can_discard_mousemove) { + can_discard_mousemove_ = possibly_can_discard_mousemove; + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + // Force the Y coordinate to the center of the clip rect. The edit + // behaves strangely when the cursor is dragged vertically: if the cursor + // is in the middle of the text, drags inside the clip rect do nothing, + // and drags outside the clip rect act as if the cursor jumped to the + // left edge of the text. When the cursor is at the right edge, drags of + // just a few pixels vertically end up selecting the "phantom newline"... + // sometimes. + RECT r; + GetRect(&r); + DefWindowProc(WM_MOUSEMOVE, keys, + MAKELPARAM(point.x, (r.bottom - r.top) / 2)); + OnAfterPossibleChange(); + } +} + +void AutocompleteEditViewWin::OnPaint(HDC bogus_hdc) { + // We need to paint over the top of the edit. If we simply let the edit do + // its default painting, then do ours into the window DC, the screen is + // updated in between and we can get flicker. To avoid this, we force the + // edit to paint into a memory DC, which we also paint onto, then blit the + // whole thing to the screen. + + // Don't paint if not necessary. + CRect paint_clip_rect; + if (!GetUpdateRect(&paint_clip_rect, true)) + return; + + // Begin painting, and create a memory DC for the edit to paint into. + CPaintDC paint_dc(m_hWnd); + CDC memory_dc(CreateCompatibleDC(paint_dc)); + CRect rect; + GetClientRect(&rect); + // NOTE: This next call uses |paint_dc| instead of |memory_dc| because + // |memory_dc| contains a 1x1 monochrome bitmap by default, which will cause + // |memory_bitmap| to be monochrome, which isn't what we want. + CBitmap memory_bitmap(CreateCompatibleBitmap(paint_dc, rect.Width(), + rect.Height())); + HBITMAP old_bitmap = memory_dc.SelectBitmap(memory_bitmap); + + // Tell our intercept functions to supply our memory DC to the edit when it + // tries to call BeginPaint(). + // + // The sane way to do this would be to use WM_PRINTCLIENT to ask the edit to + // paint into our desired DC. Unfortunately, the Rich Edit 3.0 that ships + // with Windows 2000/XP/Vista doesn't handle WM_PRINTCLIENT correctly; it + // treats it just like WM_PAINT and calls BeginPaint(), ignoring our provided + // DC. The Rich Edit 6.0 that ships with Office 2007 handles this better, but + // has other issues, and we can't redistribute that DLL anyway. So instead, + // we use this scary hack. + // + // NOTE: It's possible to get nested paint calls (!) (try setting the + // permanent URL to something longer than the edit width, then selecting the + // contents of the edit, typing a character, and hitting <esc>), so we can't + // DCHECK(!edit_hwnd_) here. Instead, just save off the old HWND, which most + // of the time will be NULL. + HWND old_edit_hwnd = edit_hwnd; + edit_hwnd = m_hWnd; + paint_struct = paint_dc.m_ps; + paint_struct.hdc = memory_dc; + DefWindowProc(WM_PAINT, reinterpret_cast<WPARAM>(bogus_hdc), 0); + + // Make the selection look better. + EraseTopOfSelection(&memory_dc, rect, paint_clip_rect); + + // Draw a slash through the scheme if this is insecure. + if (insecure_scheme_component_.is_nonempty()) + DrawSlashForInsecureScheme(memory_dc, rect, paint_clip_rect); + + // Draw the drop highlight. + if (drop_highlight_position_ != -1) + DrawDropHighlight(memory_dc, rect, paint_clip_rect); + + // Blit the memory DC to the actual paint DC and clean up. + BitBlt(paint_dc, rect.left, rect.top, rect.Width(), rect.Height(), memory_dc, + rect.left, rect.top, SRCCOPY); + memory_dc.SelectBitmap(old_bitmap); + edit_hwnd = old_edit_hwnd; +} + +void AutocompleteEditViewWin::OnNonLButtonDown(UINT keys, + const CPoint& point) { + // Interestingly, the edit doesn't seem to cancel triple clicking when the + // x-buttons (which usually means "thumb buttons") are pressed, so we only + // call this for M and R down. + tracking_double_click_ = false; + + OnPossibleDrag(point); + + SetMsgHandled(false); +} + +void AutocompleteEditViewWin::OnNonLButtonUp(UINT keys, const CPoint& point) { + UpdateDragDone(keys); + + // Let default handler have a crack at this. + SetMsgHandled(false); +} + +void AutocompleteEditViewWin::OnPaste() { + // Replace the selection if we have something to paste. + const std::wstring text(GetClipboardText()); + if (!text.empty()) { + // If this paste will be replacing all the text, record that, so we can do + // different behaviors in such a case. + if (IsSelectAll()) + model_->on_paste_replacing_all(); + ReplaceSel(text.c_str(), true); + } +} + +void AutocompleteEditViewWin::OnSetFocus(HWND focus_wnd) { + model_->OnSetFocus(GetKeyState(VK_CONTROL) < 0); + + // Notify controller if it needs to show hint UI of some kind. + ScopedFreeze freeze(this, GetTextObjectModel()); + if (model_->show_search_hint() || + (model_->is_keyword_hint() && !model_->keyword().empty())) + controller_->OnChanged(); + + // Restore saved selection if available. + if (saved_selection_for_focus_change_.cpMin != -1) { + SetSelectionRange(saved_selection_for_focus_change_); + saved_selection_for_focus_change_.cpMin = -1; + } + + SetMsgHandled(false); +} + +void AutocompleteEditViewWin::OnSysChar(TCHAR ch, + UINT repeat_count, + UINT flags) { + // Nearly all alt-<xxx> combos result in beeping rather than doing something + // useful, so we discard most. Exceptions: + // * ctrl-alt-<xxx>, which is sometimes important, generates WM_CHAR instead + // of WM_SYSCHAR, so it doesn't need to be handled here. + // * alt-space gets translated by the default WM_SYSCHAR handler to a + // WM_SYSCOMMAND to open the application context menu, so we need to allow + // it through. + if (ch == VK_SPACE) + SetMsgHandled(false); +} + +void AutocompleteEditViewWin::HandleKeystroke(UINT message, + TCHAR key, + UINT repeat_count, + UINT flags) { + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + DefWindowProc(message, key, MAKELPARAM(repeat_count, flags)); + OnAfterPossibleChange(); +} + +bool AutocompleteEditViewWin::OnKeyDownOnlyWritable(TCHAR key, + UINT repeat_count, + UINT flags) { + // NOTE: Annoyingly, ctrl-alt-<key> generates WM_KEYDOWN rather than + // WM_SYSKEYDOWN, so we need to check (flags & KF_ALTDOWN) in various places + // in this function even with a WM_SYSKEYDOWN handler. + + int count = repeat_count; + switch (key) { + case VK_RETURN: + model_->AcceptInput((flags & KF_ALTDOWN) ? + NEW_FOREGROUND_TAB : CURRENT_TAB, false); + return true; + + case VK_UP: + count = -count; + // FALL THROUGH + case VK_DOWN: + if (flags & KF_ALTDOWN) + return false; + + model_->OnUpOrDownKeyPressed(count); + return true; + + // Hijacking Editing Commands + // + // We hijack the keyboard short-cuts for Cut, Copy, and Paste here so that + // they go through our clipboard routines. This allows us to be smarter + // about how we interact with the clipboard and avoid bugs in the + // CRichEditCtrl. If we didn't hijack here, the edit control would handle + // these internally with sending the WM_CUT, WM_COPY, or WM_PASTE messages. + // + // Cut: Shift-Delete and Ctrl-x are treated as cut. Ctrl-Shift-Delete and + // Ctrl-Shift-x are not treated as cut even though the underlying + // CRichTextEdit would treat them as such. + // Copy: Ctrl-c is treated as copy. Shift-Ctrl-c is not. (This is handled + // in OnKeyDownAllModes().) + // Paste: Shift-Insert and Ctrl-v are tread as paste. Ctrl-Shift-Insert and + // Ctrl-Shift-v are not. + // + // This behavior matches most, but not all Windows programs, and largely + // conforms to what users expect. + + case VK_DELETE: + if ((flags & KF_ALTDOWN) || GetKeyState(VK_SHIFT) >= 0) + return false; + if (GetKeyState(VK_CONTROL) >= 0) { + // Cut text if possible. + CHARRANGE selection; + GetSel(selection); + if (selection.cpMin != selection.cpMax) { + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + Cut(); + OnAfterPossibleChange(); + } else if (popup_view_->model()->IsOpen()) { + // This is a bit overloaded, but we hijack Shift-Delete in this + // case to delete the current item from the pop-up. We prefer cutting + // to this when possible since that's the behavior more people expect + // from Shift-Delete, and it's more commonly useful. + popup_view_->model()->TryDeletingCurrentItem(); + } + } + return true; + + case 'X': + if ((flags & KF_ALTDOWN) || (GetKeyState(VK_CONTROL) >= 0)) + return false; + if (GetKeyState(VK_SHIFT) >= 0) { + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + Cut(); + OnAfterPossibleChange(); + } + return true; + + case VK_INSERT: + case 'V': + if ((flags & KF_ALTDOWN) || + (GetKeyState((key == 'V') ? VK_CONTROL : VK_SHIFT) >= 0)) + return false; + if (GetKeyState((key == 'V') ? VK_SHIFT : VK_CONTROL) >= 0) { + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + Paste(); + OnAfterPossibleChange(); + } + return true; + + case VK_BACK: { + if ((flags & KF_ALTDOWN) || model_->is_keyword_hint() || + model_->keyword().empty()) + return false; + + { + CHARRANGE selection; + GetSel(selection); + if ((selection.cpMin != selection.cpMax) || (selection.cpMin != 0)) + return false; + } + + // We're showing a keyword and the user pressed backspace at the beginning + // of the text. Delete the selected keyword. + ScopedFreeze freeze(this, GetTextObjectModel()); + model_->ClearKeyword(GetText()); + return true; + } + + case VK_TAB: { + if (model_->is_keyword_hint() && !model_->keyword().empty()) { + // Accept the keyword. + ScopedFreeze freeze(this, GetTextObjectModel()); + model_->AcceptKeyword(); + } + return true; + } + + case 0xbb: // Ctrl-'='. Triggers subscripting (even in plain text mode). + return true; + + default: + return false; + } +} + +bool AutocompleteEditViewWin::OnKeyDownAllModes(TCHAR key, + UINT repeat_count, + UINT flags) { + // See KF_ALTDOWN comment atop OnKeyDownOnlyWriteable(). + + switch (key) { + case VK_CONTROL: + model_->OnControlKeyChanged(true); + return false; + + case 'C': + // See more detailed comments in OnKeyDownOnlyWriteable(). + if ((flags & KF_ALTDOWN) || (GetKeyState(VK_CONTROL) >= 0)) + return false; + if (GetKeyState(VK_SHIFT) >= 0) + Copy(); + return true; + + default: + return false; + } +} + +void AutocompleteEditViewWin::GetSelection(CHARRANGE& sel) const { + GetSel(sel); + + // See if we need to reverse the direction of the selection. + ITextDocument* const text_object_model = GetTextObjectModel(); + if (!text_object_model) + return; + CComPtr<ITextSelection> selection; + const HRESULT hr = text_object_model->GetSelection(&selection); + DCHECK(hr == S_OK); + long flags; + selection->GetFlags(&flags); + if (flags & tomSelStartActive) + std::swap(sel.cpMin, sel.cpMax); +} + +std::wstring AutocompleteEditViewWin::GetSelectedText() const { + // Figure out the length of the selection. + CHARRANGE sel; + GetSel(sel); + + // Grab the selected text. + std::wstring str; + GetSelText(WriteInto(&str, sel.cpMax - sel.cpMin + 1)); + return str; +} + +void AutocompleteEditViewWin::SetSelection(LONG start, LONG end) { + SetSel(start, end); + + if (start <= end) + return; + + // We need to reverse the direction of the selection. + ITextDocument* const text_object_model = GetTextObjectModel(); + if (!text_object_model) + return; + CComPtr<ITextSelection> selection; + const HRESULT hr = text_object_model->GetSelection(&selection); + DCHECK(hr == S_OK); + selection->SetFlags(tomSelStartActive); +} + +void AutocompleteEditViewWin::PlaceCaretAt(std::wstring::size_type pos) { + SetSelection(static_cast<LONG>(pos), static_cast<LONG>(pos)); +} + +bool AutocompleteEditViewWin::IsSelectAllForRange(const CHARRANGE& sel) const { + const int text_length = GetTextLength(); + return ((sel.cpMin == 0) && (sel.cpMax >= text_length)) || + ((sel.cpMax == 0) && (sel.cpMin >= text_length)); +} + +LONG AutocompleteEditViewWin::ClipXCoordToVisibleText( + LONG x, bool is_triple_click) const { + // Clip the X coordinate to the left edge of the text. Careful: + // PosFromChar(0) may return a negative X coordinate if the beginning of the + // text has scrolled off the edit, so don't go past the clip rect's edge. + RECT r; + GetRect(&r); + const int left_bound = std::max(r.left, PosFromChar(0).x); + if (x < left_bound) + return left_bound; + + // See if we need to clip to the right edge of the text. + const int length = GetTextLength(); + // Asking for the coordinate of any character past the end of the text gets + // the pixel just to the right of the last character. + const int right_bound = std::min(r.right, PosFromChar(length).x); + if ((length == 0) || (x < right_bound)) + return x; + + // For trailing characters that are 2 pixels wide of less (like "l" in some + // fonts), we have a problem: + // * Clicks on any pixel within the character will place the cursor before + // the character. + // * Clicks on the pixel just after the character will not allow triple- + // click to work properly (true for any last character width). + // So, we move to the last pixel of the character when this is a + // triple-click, and moving to one past the last pixel in all other + // scenarios. This way, all clicks that can move the cursor will place it at + // the end of the text, but triple-click will still work. + return is_triple_click ? (right_bound - 1) : right_bound; +} + +void AutocompleteEditViewWin::EmphasizeURLComponents() { + ITextDocument* const text_object_model = GetTextObjectModel(); + ScopedFreeze freeze(this, text_object_model); + ScopedSuspendUndo suspend_undo(text_object_model); + + // Save the selection. + CHARRANGE saved_sel; + GetSelection(saved_sel); + + // See whether the contents are a URL with a non-empty host portion, which we + // should emphasize. To check for a URL, rather than using the type returned + // by Parse(), ask the model, which will check the desired page transition for + // this input. This can tell us whether an UNKNOWN input string is going to + // be treated as a search or a navigation, and is the same method the Paste + // And Go system uses. + url_parse::Parsed parts; + AutocompleteInput::Parse(GetText(), model_->GetDesiredTLD(), &parts, NULL); + const bool emphasize = model_->CurrentTextIsURL() && (parts.host.len > 0); + + // Set the baseline emphasis. + CHARFORMAT cf = {0}; + cf.dwMask = CFM_COLOR; + cf.dwEffects = 0; + cf.crTextColor = GetSysColor(emphasize ? COLOR_GRAYTEXT : COLOR_WINDOWTEXT); + SelectAll(false); + SetSelectionCharFormat(cf); + + if (emphasize) { + // We've found a host name, give it more emphasis. + cf.crTextColor = GetSysColor(COLOR_WINDOWTEXT); + SetSelection(parts.host.begin, parts.host.end()); + SetSelectionCharFormat(cf); + } + + // Emphasize the scheme for security UI display purposes (if necessary). + insecure_scheme_component_.reset(); + if (!model_->user_input_in_progress() && parts.scheme.is_nonempty() && + (scheme_security_level_ != ToolbarModel::NORMAL)) { + if (scheme_security_level_ == ToolbarModel::SECURE) { + cf.crTextColor = kSecureSchemeColor; + } else { + insecure_scheme_component_.begin = parts.scheme.begin; + insecure_scheme_component_.len = parts.scheme.len; + cf.crTextColor = kInsecureSchemeColor; + } + SetSelection(parts.scheme.begin, parts.scheme.end()); + SetSelectionCharFormat(cf); + } + + // Restore the selection. + SetSelectionRange(saved_sel); +} + +void AutocompleteEditViewWin::EraseTopOfSelection( + CDC* dc, const CRect& client_rect, const CRect& paint_clip_rect) { + // Find the area we care about painting. We could calculate the rect + // containing just the selected portion, but there's no harm in simply erasing + // the whole top of the client area, and at least once I saw us manage to + // select the "phantom newline" briefly, which looks very weird if not clipped + // off at the same height. + CRect erase_rect(client_rect.left, client_rect.top, client_rect.right, + client_rect.top + font_y_adjustment_); + erase_rect.IntersectRect(erase_rect, paint_clip_rect); + + // Erase to the background color. + if (!erase_rect.IsRectNull()) + dc->FillSolidRect(&erase_rect, background_color_); +} + +void AutocompleteEditViewWin::DrawSlashForInsecureScheme( + HDC hdc, + const CRect& client_rect, + const CRect& paint_clip_rect) { + DCHECK(insecure_scheme_component_.is_nonempty()); + + // Calculate the rect, in window coordinates, containing the portion of the + // scheme where we'll be drawing the slash. Vertically, we draw across one + // x-height of text, plus an additional 3 stroke diameters (the stroke width + // plus a half-stroke width of space between the stroke and the text, both + // above and below the text). + const int font_top = client_rect.top + font_y_adjustment_; + const SkScalar kStrokeWidthPixels = SkIntToScalar(2); + const int kAdditionalSpaceOutsideFont = + static_cast<int>(ceil(kStrokeWidthPixels * 1.5f)); + const CRect scheme_rect(PosFromChar(insecure_scheme_component_.begin).x, + font_top + font_ascent_ - font_x_height_ - + kAdditionalSpaceOutsideFont, + PosFromChar(insecure_scheme_component_.end()).x, + font_top + font_ascent_ + + kAdditionalSpaceOutsideFont); + + // Clip to the portion we care about and translate to canvas coordinates + // (see the canvas creation below) for use later. + CRect canvas_clip_rect, canvas_paint_clip_rect; + canvas_clip_rect.IntersectRect(scheme_rect, client_rect); + canvas_paint_clip_rect.IntersectRect(canvas_clip_rect, paint_clip_rect); + if (canvas_paint_clip_rect.IsRectNull()) + return; // We don't need to paint any of this region, so just bail early. + canvas_clip_rect.OffsetRect(-scheme_rect.left, -scheme_rect.top); + canvas_paint_clip_rect.OffsetRect(-scheme_rect.left, -scheme_rect.top); + + // Create a paint context for drawing the antialiased stroke. + SkPaint paint; + paint.setAntiAlias(true); + paint.setStrokeWidth(kStrokeWidthPixels); + paint.setStrokeCap(SkPaint::kRound_Cap); + + // Create a canvas as large as |scheme_rect| to do our drawing, and initialize + // it to fully transparent so any antialiasing will look nice when painted + // atop the edit. + ChromeCanvas canvas(scheme_rect.Width(), scheme_rect.Height(), false); + // TODO (jcampan): This const_cast should not be necessary once the SKIA + // API has been changed to return a non-const bitmap. + (const_cast<SkBitmap&>(canvas.getDevice()->accessBitmap(true))). + eraseARGB(0, 0, 0, 0); + + // Calculate the start and end of the stroke, which are just the lower left + // and upper right corners of the canvas, inset by the radius of the endcap + // so we don't clip the endcap off. + const SkScalar kEndCapRadiusPixels = kStrokeWidthPixels / SkIntToScalar(2); + const SkPoint start_point = { + kEndCapRadiusPixels, + SkIntToScalar(scheme_rect.Height()) - kEndCapRadiusPixels }; + const SkPoint end_point = { + SkIntToScalar(scheme_rect.Width()) - kEndCapRadiusPixels, + kEndCapRadiusPixels }; + + // Calculate the selection rectangle in canvas coordinates, which we'll use + // to clip the stroke so we can draw the unselected and selected portions. + CHARRANGE sel; + GetSel(sel); + const SkRect selection_rect = { + SkIntToScalar(PosFromChar(sel.cpMin).x - scheme_rect.left), + SkIntToScalar(0), + SkIntToScalar(PosFromChar(sel.cpMax).x - scheme_rect.left), + SkIntToScalar(scheme_rect.Height()) }; + + // Draw the unselected portion of the stroke. + canvas.save(); + if (selection_rect.isEmpty() || + canvas.clipRect(selection_rect, SkRegion::kDifference_Op)) { + paint.setColor(kSchemeStrikeoutColor); + canvas.drawLine(start_point.fX, start_point.fY, + end_point.fX, end_point.fY, paint); + } + canvas.restore(); + + // Draw the selected portion of the stroke. + if (!selection_rect.isEmpty() && canvas.clipRect(selection_rect)) { + paint.setColor(kSchemeSelectedStrikeoutColor); + canvas.drawLine(start_point.fX, start_point.fY, + end_point.fX, end_point.fY, paint); + } + + // Now copy what we drew to the target HDC. + canvas.getTopPlatformDevice().drawToHDC(hdc, + scheme_rect.left + canvas_paint_clip_rect.left - canvas_clip_rect.left, + std::max(scheme_rect.top, client_rect.top) + canvas_paint_clip_rect.top - + canvas_clip_rect.top, &canvas_paint_clip_rect); +} + +void AutocompleteEditViewWin::DrawDropHighlight( + HDC hdc, const CRect& client_rect, const CRect& paint_clip_rect) { + DCHECK(drop_highlight_position_ != -1); + + const int highlight_y = client_rect.top + font_y_adjustment_; + const int highlight_x = PosFromChar(drop_highlight_position_).x - 1; + const CRect highlight_rect(highlight_x, + highlight_y, + highlight_x + 1, + highlight_y + font_ascent_ + font_descent_); + + // Clip the highlight to the region being painted. + CRect clip_rect; + clip_rect.IntersectRect(highlight_rect, paint_clip_rect); + if (clip_rect.IsRectNull()) + return; + + HGDIOBJ last_pen = SelectObject(hdc, CreatePen(PS_SOLID, 1, RGB(0, 0, 0))); + MoveToEx(hdc, clip_rect.left, clip_rect.top, NULL); + LineTo(hdc, clip_rect.left, clip_rect.bottom); + DeleteObject(SelectObject(hdc, last_pen)); +} + +void AutocompleteEditViewWin::TextChanged() { + ScopedFreeze freeze(this, GetTextObjectModel()); + EmphasizeURLComponents(); + controller_->OnChanged(); +} + +std::wstring AutocompleteEditViewWin::GetClipboardText() const { + // Try text format. + ClipboardService* clipboard = g_browser_process->clipboard_service(); + if (clipboard->IsFormatAvailable(CF_UNICODETEXT)) { + std::wstring text; + clipboard->ReadText(&text); + + // Note: Unlike in the find popup and textfield view, here we completely + // remove whitespace strings containing newlines. We assume users are + // most likely pasting in URLs that may have been split into multiple + // lines in terminals, email programs, etc., and so linebreaks indicate + // completely bogus whitespace that would just cause the input to be + // invalid. + return CollapseWhitespace(text, true); + } + + // Try bookmark format. + // + // It is tempting to try bookmark format first, but the URL we get out of a + // bookmark has been cannonicalized via GURL. This means if a user copies + // and pastes from the URL bar to itself, the text will get fixed up and + // cannonicalized, which is not what the user expects. By pasting in this + // order, we are sure to paste what the user copied. + if (clipboard->IsFormatAvailable(Clipboard::GetUrlWFormatType())) { + std::string url_str; + clipboard->ReadBookmark(NULL, &url_str); + // pass resulting url string through GURL to normalize + GURL url(url_str); + if (url.is_valid()) + return UTF8ToWide(url.spec()); + } + + return std::wstring(); +} + +bool AutocompleteEditViewWin::CanPasteAndGo(const std::wstring& text) const { + return !popup_window_mode_ && model_->CanPasteAndGo(text); +} + +ITextDocument* AutocompleteEditViewWin::GetTextObjectModel() const { + if (!text_object_model_) { + // This is lazily initialized, instead of being initialized in the + // constructor, in order to avoid hurting startup performance. + CComPtr<IRichEditOle> ole_interface; + ole_interface.Attach(GetOleInterface()); + text_object_model_ = ole_interface; + } + return text_object_model_; +} + +void AutocompleteEditViewWin::StartDragIfNecessary(const CPoint& point) { + if (initiated_drag_ || !win_util::IsDrag(mouse_down_point_, point)) + return; + + scoped_refptr<OSExchangeData> data = new OSExchangeData; + + DWORD supported_modes = DROPEFFECT_COPY; + + CHARRANGE sel; + GetSelection(sel); + + // We're about to start a drag session, but the edit is expecting a mouse up + // that it uses to reset internal state. If we don't send a mouse up now, + // when the mouse moves back into the edit the edit will reset the selection. + // So, we send the event now which resets the selection. We then restore the + // selection and start the drag. We always send lbuttonup as otherwise we + // might trigger a context menu (right up). This seems scary, but doesn't + // seem to cause problems. + { + ScopedFreeze freeze(this, GetTextObjectModel()); + DefWindowProc(WM_LBUTTONUP, 0, + MAKELPARAM(mouse_down_point_.x, mouse_down_point_.y)); + SetSelectionRange(sel); + } + + const std::wstring start_text(GetText()); + if (IsSelectAllForRange(sel)) { + // All the text is selected, export as URL. + GURL url; + std::wstring title; + SkBitmap favicon; + model_->GetDataForURLExport(&url, &title, &favicon); + drag_utils::SetURLAndDragImage(url, title, favicon, data.get()); + data->SetURL(url, title); + supported_modes |= DROPEFFECT_LINK; + UserMetrics::RecordAction(L"Omnibox_DragURL", model_->profile()); + } else { + supported_modes |= DROPEFFECT_MOVE; + UserMetrics::RecordAction(L"Omnibox_DragString", model_->profile()); + } + + data->SetString(GetSelectedText()); + + scoped_refptr<BaseDragSource> drag_source(new BaseDragSource); + DWORD dropped_mode; + in_drag_ = true; + if (DoDragDrop(data, drag_source, supported_modes, &dropped_mode) == + DRAGDROP_S_DROP) { + if ((dropped_mode == DROPEFFECT_MOVE) && (start_text == GetText())) { + ScopedFreeze freeze(this, GetTextObjectModel()); + OnBeforePossibleChange(); + SetSelectionRange(sel); + ReplaceSel(L"", true); + OnAfterPossibleChange(); + } + // else case, not a move or it was a move and the drop was on us. + // If the drop was on us, EditDropTarget took care of the move so that + // we don't have to delete the text. + possible_drag_ = false; + } else { + // Drag was canceled or failed. The mouse may still be down and + // over us, in which case we need possible_drag_ to remain true so + // that we don't forward mouse move events to the edit which will + // start another drag. + // + // NOTE: we didn't use mouse capture during the mouse down as DoDragDrop + // does its own capture. + CPoint cursor_location; + GetCursorPos(&cursor_location); + + CRect client_rect; + GetClientRect(&client_rect); + + CPoint client_origin_on_screen(client_rect.left, client_rect.top); + ClientToScreen(&client_origin_on_screen); + client_rect.MoveToXY(client_origin_on_screen.x, + client_origin_on_screen.y); + possible_drag_ = (client_rect.PtInRect(cursor_location) && + ((GetKeyState(VK_LBUTTON) != 0) || + (GetKeyState(VK_MBUTTON) != 0) || + (GetKeyState(VK_RBUTTON) != 0))); + } + + in_drag_ = false; + initiated_drag_ = true; + tracking_click_ = false; +} + +void AutocompleteEditViewWin::OnPossibleDrag(const CPoint& point) { + if (possible_drag_) + return; + + mouse_down_point_ = point; + initiated_drag_ = false; + + CHARRANGE selection; + GetSel(selection); + if (selection.cpMin != selection.cpMax) { + const POINT min_sel_location(PosFromChar(selection.cpMin)); + const POINT max_sel_location(PosFromChar(selection.cpMax)); + // NOTE: we don't consider the y location here as we always pass a + // y-coordinate in the middle to the default handler which always triggers + // a drag regardless of the y-coordinate. + possible_drag_ = (point.x >= min_sel_location.x) && + (point.x < max_sel_location.x); + } +} + +void AutocompleteEditViewWin::UpdateDragDone(UINT keys) { + possible_drag_ = (possible_drag_ && + ((keys & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) != 0)); +} + +void AutocompleteEditViewWin::RepaintDropHighlight(int position) { + if ((position != -1) && (position <= GetTextLength())) { + const POINT min_loc(PosFromChar(position)); + const RECT highlight_bounds = {min_loc.x - 1, font_y_adjustment_, + min_loc.x + 2, font_ascent_ + font_descent_ + font_y_adjustment_}; + InvalidateRect(&highlight_bounds, false); + } +} diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_win.h b/chrome/browser/autocomplete/autocomplete_edit_view_win.h new file mode 100644 index 0000000..9905f1c --- /dev/null +++ b/chrome/browser/autocomplete/autocomplete_edit_view_win.h @@ -0,0 +1,458 @@ +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_WIN_H_ +#define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_WIN_H_ + +#include <atlbase.h> +#include <atlapp.h> +#include <atlcrack.h> +#include <atlctrls.h> +#include <atlmisc.h> +#include <tom.h> // For ITextDocument, a COM interface to CRichEditCtrl. + +#include "base/scoped_ptr.h" +#include "chrome/browser/autocomplete/autocomplete.h" +#include "chrome/browser/autocomplete/autocomplete_edit_view.h" +#include "chrome/browser/toolbar_model.h" +#include "chrome/common/gfx/chrome_font.h" +#include "chrome/common/page_transition_types.h" +#include "chrome/views/menu.h" +#include "webkit/glue/window_open_disposition.h" + +class AutocompletePopupModel; +class CommandUpdater; +class Profile; +class TabContents; +namespace views { +class View; +} + +class AutocompleteEditController; +class AutocompleteEditModel; +class AutocompleteEditView; +class AutocompletePopupViewWin; + +// Provides the implementation of an edit control with a drop-down +// autocomplete box. The box itself is implemented in autocomplete_popup.cc +// This file implements the edit box and management for the popup. +class AutocompleteEditViewWin + : public CWindowImpl<AutocompleteEditViewWin, + CRichEditCtrl, + CWinTraits<WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL | + ES_NOHIDESEL> >, + public CRichEditCommands<AutocompleteEditViewWin>, + public Menu::Delegate, + public AutocompleteEditView { + public: + struct State { + State(const CHARRANGE& selection, + const CHARRANGE& saved_selection_for_focus_change) + : selection(selection), + saved_selection_for_focus_change(saved_selection_for_focus_change) { + } + + const CHARRANGE selection; + const CHARRANGE saved_selection_for_focus_change; + }; + + DECLARE_WND_CLASS(L"Chrome_AutocompleteEditView"); + + AutocompleteEditViewWin(const ChromeFont& font, + AutocompleteEditController* controller, + ToolbarModel* toolbar_model, + views::View* parent_view, + HWND hwnd, + Profile* profile, + CommandUpdater* command_updater, + bool popup_window_mode); + ~AutocompleteEditViewWin(); + + views::View* parent_view() const { return parent_view_; } + + // Implement the AutocompleteEditView interface. + virtual AutocompleteEditModel* model() { return model_.get(); } + virtual const AutocompleteEditModel* model() const { return model_.get(); } + + virtual void SaveStateToTab(TabContents* tab); + + virtual void Update(const TabContents* tab_for_state_restoring); + + virtual void OpenURL(const GURL& url, + WindowOpenDisposition disposition, + PageTransition::Type transition, + const GURL& alternate_nav_url, + size_t selected_line, + const std::wstring& keyword); + + virtual std::wstring GetText() const; + + virtual void SetUserText(const std::wstring& text) { + SetUserText(text, text, true); + } + virtual void SetUserText(const std::wstring& text, + const std::wstring& display_text, + bool update_popup); + + virtual void SetWindowTextAndCaretPos(const std::wstring& text, + size_t caret_pos); + + virtual bool IsSelectAll(); + virtual void SelectAll(bool reversed); + virtual void RevertAll(); + + virtual void UpdatePopup(); + virtual void ClosePopup(); + + virtual void OnTemporaryTextMaybeChanged(const std::wstring& display_text, + bool save_original_selection); + virtual bool OnInlineAutocompleteTextMaybeChanged( + const std::wstring& display_text, size_t user_text_length); + virtual void OnRevertTemporaryText(); + virtual void OnBeforePossibleChange(); + virtual bool OnAfterPossibleChange(); + + // Exposes custom IAccessible implementation to the overall MSAA hierarchy. + IAccessible* GetIAccessible(); + + void SetDropHighlightPosition(int position); + int drop_highlight_position() const { return drop_highlight_position_; } + + // Returns true if a drag a drop session was initiated by this edit. + bool in_drag() const { return in_drag_; } + + // Moves the selected text to the specified position. + void MoveSelectedText(int new_position); + + // Inserts the text at the specified position. + void InsertText(int position, const std::wstring& text); + + // Invokes CanPasteAndGo with the specified text, and if successful navigates + // to the appropriate URL. The behavior of this is the same as if the user + // typed in the specified text and pressed enter. + void PasteAndGo(const std::wstring& text); + + // Called before an accelerator is processed to give us a chance to override + // it. + bool OverrideAccelerator(const views::Accelerator& accelerator); + + // Handler for external events passed in to us. The View that owns us may + // send us events that we should treat as if they were events on us. + void HandleExternalMsg(UINT msg, UINT flags, const CPoint& screen_point); + + // CWindowImpl + BEGIN_MSG_MAP(AutocompleteEdit) + MSG_WM_CHAR(OnChar) + MSG_WM_CONTEXTMENU(OnContextMenu) + MSG_WM_COPY(OnCopy) + MSG_WM_CUT(OnCut) + MESSAGE_HANDLER_EX(WM_GETOBJECT, OnGetObject) + MESSAGE_HANDLER_EX(WM_IME_COMPOSITION, OnImeComposition) + MSG_WM_KEYDOWN(OnKeyDown) + MSG_WM_KEYUP(OnKeyUp) + MSG_WM_KILLFOCUS(OnKillFocus) + MSG_WM_LBUTTONDBLCLK(OnLButtonDblClk) + MSG_WM_LBUTTONDOWN(OnLButtonDown) + MSG_WM_LBUTTONUP(OnLButtonUp) + MSG_WM_MBUTTONDOWN(OnNonLButtonDown) + MSG_WM_MBUTTONUP(OnNonLButtonUp) + MSG_WM_MOUSEACTIVATE(OnMouseActivate) + MSG_WM_MOUSEMOVE(OnMouseMove) + MSG_WM_PAINT(OnPaint) + MSG_WM_PASTE(OnPaste) + MSG_WM_RBUTTONDOWN(OnNonLButtonDown) + MSG_WM_RBUTTONUP(OnNonLButtonUp) + MSG_WM_SETFOCUS(OnSetFocus) + MSG_WM_SYSCHAR(OnSysChar) // WM_SYSxxx == WM_xxx with ALT down + MSG_WM_SYSKEYDOWN(OnKeyDown) + MSG_WM_SYSKEYUP(OnKeyUp) + DEFAULT_REFLECTION_HANDLER() // avoids black margin area + END_MSG_MAP() + + // Menu::Delegate + virtual bool IsCommandEnabled(int id) const; + virtual bool GetContextualLabel(int id, std::wstring* out) const; + virtual void ExecuteCommand(int id); + + private: + // This object freezes repainting of the edit until the object is destroyed. + // Some methods of the CRichEditCtrl draw synchronously to the screen. If we + // don't freeze, the user will see a rapid series of calls to these as + // flickers. + // + // Freezing the control while it is already frozen is permitted; the control + // will unfreeze once both freezes are released (the freezes stack). + class ScopedFreeze { + public: + ScopedFreeze(AutocompleteEditViewWin* edit, + ITextDocument* text_object_model); + ~ScopedFreeze(); + + private: + AutocompleteEditViewWin* const edit_; + ITextDocument* const text_object_model_; + + DISALLOW_COPY_AND_ASSIGN(ScopedFreeze); + }; + + // This object suspends placing any operations on the edit's undo stack until + // the object is destroyed. If we don't do this, some of the operations we + // perform behind the user's back will be undoable by the user, which feels + // bizarre and confusing. + class ScopedSuspendUndo { + public: + explicit ScopedSuspendUndo(ITextDocument* text_object_model); + ~ScopedSuspendUndo(); + + private: + ITextDocument* const text_object_model_; + + DISALLOW_COPY_AND_ASSIGN(ScopedSuspendUndo); + }; + + // Replacement word-breaking proc for the rich edit control. + static int CALLBACK WordBreakProc(LPTSTR edit_text, + int current_pos, + int num_bytes, + int action); + + // Returns true if |edit_text| starting at |current_pos| is "://". + static bool SchemeEnd(LPTSTR edit_text, int current_pos, int length); + + // Message handlers + void OnChar(TCHAR ch, UINT repeat_count, UINT flags); + void OnContextMenu(HWND window, const CPoint& point); + void OnCopy(); + void OnCut(); + LRESULT OnGetObject(UINT uMsg, WPARAM wparam, LPARAM lparam); + LRESULT OnImeComposition(UINT message, WPARAM wparam, LPARAM lparam); + void OnKeyDown(TCHAR key, UINT repeat_count, UINT flags); + void OnKeyUp(TCHAR key, UINT repeat_count, UINT flags); + void OnKillFocus(HWND focus_wnd); + void OnLButtonDblClk(UINT keys, const CPoint& point); + void OnLButtonDown(UINT keys, const CPoint& point); + void OnLButtonUp(UINT keys, const CPoint& point); + LRESULT OnMouseActivate(HWND window, UINT hit_test, UINT mouse_message); + void OnMouseMove(UINT keys, const CPoint& point); + void OnNonLButtonDown(UINT keys, const CPoint& point); + void OnNonLButtonUp(UINT keys, const CPoint& point); + void OnPaint(HDC bogus_hdc); + void OnPaste(); + void OnSetFocus(HWND focus_wnd); + void OnSysChar(TCHAR ch, UINT repeat_count, UINT flags); + + // Helper function for OnChar() and OnKeyDown() that handles keystrokes that + // could change the text in the edit. + void HandleKeystroke(UINT message, TCHAR key, UINT repeat_count, UINT flags); + + // Helper functions for OnKeyDown() that handle accelerators applicable when + // we're not read-only and all the time, respectively. These return true if + // they handled the key. + bool OnKeyDownOnlyWritable(TCHAR key, UINT repeat_count, UINT flags); + bool OnKeyDownAllModes(TCHAR key, UINT repeat_count, UINT flags); + + // Like GetSel(), but returns a range where |cpMin| will be larger than + // |cpMax| if the cursor is at the start rather than the end of the selection + // (in other words, tracks selection direction as well as offsets). + // Note the non-Google-style "non-const-ref" argument, which matches GetSel(). + void GetSelection(CHARRANGE& sel) const; + + // Returns the currently selected text of the edit control. + std::wstring GetSelectedText() const; + + // Like SetSel(), but respects the selection direction implied by |start| and + // |end|: if |end| < |start|, the effective cursor will be placed at the + // beginning of the selection. + void SetSelection(LONG start, LONG end); + + // Like SetSelection(), but takes a CHARRANGE. + void SetSelectionRange(const CHARRANGE& sel) { + SetSelection(sel.cpMin, sel.cpMax); + } + + // Places the caret at the given position. This clears any selection. + void PlaceCaretAt(size_t pos); + + // Returns true if |sel| represents a forward or backward selection of all the + // text. + bool IsSelectAllForRange(const CHARRANGE& sel) const; + + // Given an X coordinate in client coordinates, returns that coordinate + // clipped to be within the horizontal bounds of the visible text. + // + // This is used in our mouse handlers to work around quirky behaviors of the + // underlying CRichEditCtrl like not supporting triple-click when the user + // doesn't click on the text itself. + // + // |is_triple_click| should be true iff this is the third click of a triple + // click. Sadly, we need to clip slightly differently in this case. + LONG ClipXCoordToVisibleText(LONG x, bool is_triple_click) const; + + // Parses the contents of the control for the scheme and the host name. + // Highlights the scheme in green or red depending on it security level. + // If a host name is found, it makes it visually stronger. + void EmphasizeURLComponents(); + + // Erases the portion of the selection in the font's y-adjustment area. For + // some reason the edit draws the selection rect here even though it's not + // part of the font. + void EraseTopOfSelection(CDC* dc, + const CRect& client_rect, + const CRect& paint_clip_rect); + + // Draws a slash across the scheme if desired. + void DrawSlashForInsecureScheme(HDC hdc, + const CRect& client_rect, + const CRect& paint_clip_rect); + + // Renders the drop highlight. + void DrawDropHighlight(HDC hdc, + const CRect& client_rect, + const CRect& paint_clip_rect); + + // Internally invoked whenever the text changes in some way. + void TextChanged(); + + // Returns the current clipboard contents as a string that can be pasted in. + // In addition to just getting CF_UNICODETEXT out, this can also extract URLs + // from bookmarks on the clipboard. + std::wstring GetClipboardText() const; + + // Determines whether the user can "paste and go", given the specified text. + bool CanPasteAndGo(const std::wstring& text) const; + + // Getter for the text_object_model_, used by the ScopedXXX classes. Note + // that the pointer returned here is only valid as long as the + // AutocompleteEdit is still alive. Also, if the underlying call fails, this + // may return NULL. + ITextDocument* GetTextObjectModel() const; + + // Invoked during a mouse move. As necessary starts a drag and drop session. + void StartDragIfNecessary(const CPoint& point); + + // Invoked during a mouse down. If the mouse location is over the selection + // this sets possible_drag_ to true to indicate a drag should start if the + // user moves the mouse far enough to start a drag. + void OnPossibleDrag(const CPoint& point); + + // Invoked when a mouse button is released. If none of the buttons are still + // down, this sets possible_drag_ to false. + void UpdateDragDone(UINT keys); + + // Redraws the necessary region for a drop highlight at the specified + // position. This does nothing if position is beyond the bounds of the + // text. + void RepaintDropHighlight(int position); + + scoped_ptr<AutocompleteEditModel> model_; + + scoped_ptr<AutocompletePopupViewWin> popup_view_; + + AutocompleteEditController* controller_; + + // The parent view for the edit, used to align the popup and for + // accessibility. + views::View* parent_view_; + + ToolbarModel* toolbar_model_; + + // The object that handles additional command functionality exposed on the + // edit, such as invoking the keyword editor. + CommandUpdater* command_updater_; + + // When true, the location bar view is read only and also is has a slightly + // different presentation (font size / color). This is used for popups. + bool popup_window_mode_; + + // Non-null when the edit is gaining focus from a left click. This is only + // needed between when WM_MOUSEACTIVATE and WM_LBUTTONDOWN get processed. It + // serves two purposes: first, by communicating to OnLButtonDown() that we're + // gaining focus from a left click, it allows us to work even with the + // inconsistent order in which various Windows messages get sent (see comments + // in OnMouseActivate()). Second, by holding the edit frozen, it ensures that + // when we process WM_SETFOCUS the edit won't first redraw itself with the + // caret at the beginning, and then have it blink to where the mouse cursor + // really is shortly afterward. + scoped_ptr<ScopedFreeze> gaining_focus_; + + // When the user clicks to give us focus, we watch to see if they're clicking + // or dragging. When they're clicking, we select nothing until mouseup, then + // select all the text in the edit. During this process, tracking_click_ is + // true and mouse_down_point_ holds the original click location. At other + // times, tracking_click_ is false, and the contents of mouse_down_point_ + // should be ignored. + bool tracking_click_; + CPoint mouse_down_point_; + + // We need to know if the user triple-clicks, so track double click points + // and times so we can see if subsequent clicks are actually triple clicks. + bool tracking_double_click_; + CPoint double_click_point_; + DWORD double_click_time_; + + // Used to discard unnecessary WM_MOUSEMOVE events after the first such + // unnecessary event. See detailed comments in OnMouseMove(). + bool can_discard_mousemove_; + + // Variables for tracking state before and after a possible change. + std::wstring text_before_change_; + CHARRANGE sel_before_change_; + + // Set at the same time the model's original_* members are set, and valid in + // the same cases. + CHARRANGE original_selection_; + + // Holds the user's selection across focus changes. cpMin holds -1 when + // there is no saved selection. + CHARRANGE saved_selection_for_focus_change_; + + // The context menu for the edit. + scoped_ptr<Menu> context_menu_; + + // Font we're using. We keep a reference to make sure the font supplied to + // the constructor doesn't go away before we do. + ChromeFont font_; + + // Metrics about the font, which we keep so we don't need to recalculate them + // every time we paint. |font_y_adjustment_| is the number of pixels we need + // to shift the font vertically in order to make its baseline be at our + // desired baseline in the edit. + int font_ascent_; + int font_descent_; + int font_x_height_; + int font_y_adjustment_; + + // If true, indicates the mouse is down and if the mouse is moved enough we + // should start a drag. + bool possible_drag_; + + // If true, we're in a call to DoDragDrop. + bool in_drag_; + + // If true indicates we've run a drag and drop session. This is used to + // avoid starting two drag and drop sessions if the drag is canceled while + // the mouse is still down. + bool initiated_drag_; + + // Position of the drop highlight. If this is -1, there is no drop highlight. + int drop_highlight_position_; + + // Security UI-related data. + COLORREF background_color_; + ToolbarModel::SecurityLevel scheme_security_level_; + + // This interface is useful for accessing the CRichEditCtrl at a low level. + mutable CComQIPtr<ITextDocument> text_object_model_; + + // This contains the scheme char start and stop indexes that should be + // striken-out when displaying an insecure scheme. + url_parse::Component insecure_scheme_component_; + + // Instance of accessibility information and handling. + mutable CComPtr<IAccessible> autocomplete_accessibility_; + + DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewWin); +}; + +#endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_WIN_H_ diff --git a/chrome/browser/autocomplete/autocomplete_popup_view_win.cc b/chrome/browser/autocomplete/autocomplete_popup_view_win.cc index a583154..1c13a6c 100755 --- a/chrome/browser/autocomplete/autocomplete_popup_view_win.cc +++ b/chrome/browser/autocomplete/autocomplete_popup_view_win.cc @@ -185,7 +185,7 @@ COLORREF AutocompletePopupViewWin::DrawLineInfo::AlphaBlend( AutocompletePopupViewWin::AutocompletePopupViewWin( const ChromeFont& font, - AutocompleteEditView* edit_view, + AutocompleteEditViewWin* edit_view, AutocompleteEditModel* edit_model, Profile* profile) : model_(new AutocompletePopupModel(this, edit_model, profile)), diff --git a/chrome/browser/autocomplete/autocomplete_popup_view_win.h b/chrome/browser/autocomplete/autocomplete_popup_view_win.h index dcfd505..18c6449 100755 --- a/chrome/browser/autocomplete/autocomplete_popup_view_win.h +++ b/chrome/browser/autocomplete/autocomplete_popup_view_win.h @@ -2,6 +2,9 @@ // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. +#ifndef CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_WIN_H_ +#define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_WIN_H_ + #include <atlbase.h> #include <atlapp.h> #include <atlcrack.h> @@ -18,7 +21,7 @@ class AutocompletePopupModel; class AutocompleteEditModel; -class AutocompleteEditView; +class AutocompleteEditViewWin; class Profile; class SkBitmap; @@ -46,7 +49,7 @@ class AutocompletePopupViewWin END_MSG_MAP() AutocompletePopupViewWin(const ChromeFont& font, - AutocompleteEditView* edit_view, + AutocompleteEditViewWin* edit_view, AutocompleteEditModel* edit_model, Profile* profile); @@ -183,7 +186,7 @@ class AutocompletePopupViewWin scoped_ptr<AutocompletePopupModel> model_; - AutocompleteEditView* edit_view_; + AutocompleteEditViewWin* edit_view_; // Cached GDI information for drawing. DrawLineInfo line_info_; @@ -203,3 +206,5 @@ class AutocompletePopupViewWin DISALLOW_COPY_AND_ASSIGN(AutocompletePopupViewWin); }; + +#endif // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_VIEW_WIN_H_ diff --git a/chrome/browser/autocomplete/edit_drop_target.cc b/chrome/browser/autocomplete/edit_drop_target.cc deleted file mode 100644 index abe1566..0000000 --- a/chrome/browser/autocomplete/edit_drop_target.cc +++ /dev/null @@ -1,152 +0,0 @@ -// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#include "chrome/browser/autocomplete/edit_drop_target.h" - -#include "base/string_util.h" -#include "chrome/browser/autocomplete/autocomplete_edit.h" -#include "chrome/common/os_exchange_data.h" -#include "googleurl/src/gurl.h" - -namespace { - -// A helper method for determining a valid DROPEFFECT given the allowed -// DROPEFFECTS. We prefer copy over link. -DWORD CopyOrLinkDropEffect(DWORD effect) { - if (effect & DROPEFFECT_COPY) - return DROPEFFECT_COPY; - if (effect & DROPEFFECT_LINK) - return DROPEFFECT_LINK; - return DROPEFFECT_NONE; -} - -} - -EditDropTarget::EditDropTarget(AutocompleteEditView* edit) - : BaseDropTarget(edit->m_hWnd), - edit_(edit), - drag_has_url_(false), - drag_has_string_(false) { -} - -DWORD EditDropTarget::OnDragEnter(IDataObject* data_object, - DWORD key_state, - POINT cursor_position, - DWORD effect) { - OSExchangeData os_data(data_object); - drag_has_url_ = os_data.HasURL(); - drag_has_string_ = !drag_has_url_ && os_data.HasString(); - if (drag_has_url_) { - if (edit_->in_drag()) { - // The edit we're associated with originated the drag. No point in - // allowing the user to drop back on us. - drag_has_url_ = false; - } - // NOTE: it would be nice to visually show all the text is going to - // be replaced by selecting all, but this caused painting problems. In - // particular the flashing caret would appear outside the edit! For now - // we stick with no visual indicator other than that shown own the mouse - // cursor. - } - return OnDragOver(data_object, key_state, cursor_position, effect); -} - -DWORD EditDropTarget::OnDragOver(IDataObject* data_object, - DWORD key_state, - POINT cursor_position, - DWORD effect) { - if (drag_has_url_) - return CopyOrLinkDropEffect(effect); - - if (drag_has_string_) { - UpdateDropHighlightPosition(cursor_position); - if (edit_->drop_highlight_position() == -1 && edit_->in_drag()) - return DROPEFFECT_NONE; - if (edit_->in_drag()) { - // The edit we're associated with originated the drag. Do the normal drag - // behavior. - DCHECK((effect & DROPEFFECT_COPY) && (effect & DROPEFFECT_MOVE)); - return (key_state & MK_CONTROL) ? DROPEFFECT_COPY : DROPEFFECT_MOVE; - } - // Our edit didn't originate the drag, only allow link or copy. - return CopyOrLinkDropEffect(effect); - } - - return DROPEFFECT_NONE; -} - -void EditDropTarget::OnDragLeave(IDataObject* data_object) { - ResetDropHighlights(); -} - -DWORD EditDropTarget::OnDrop(IDataObject* data_object, - DWORD key_state, - POINT cursor_position, - DWORD effect) { - OSExchangeData os_data(data_object); - - if (drag_has_url_) { - GURL url; - std::wstring title; - if (os_data.GetURLAndTitle(&url, &title)) { - edit_->SetUserText(UTF8ToWide(url.spec())); - edit_->model()->AcceptInput(CURRENT_TAB, true); - return CopyOrLinkDropEffect(effect); - } - } else if (drag_has_string_) { - int string_drop_position = edit_->drop_highlight_position(); - std::wstring text; - if ((string_drop_position != -1 || !edit_->in_drag()) && - os_data.GetString(&text)) { - DCHECK(string_drop_position == -1 || - ((string_drop_position >= 0) && - (string_drop_position <= edit_->GetTextLength()))); - const DWORD drop_operation = - OnDragOver(data_object, key_state, cursor_position, effect); - if (edit_->in_drag()) { - if (drop_operation == DROPEFFECT_MOVE) - edit_->MoveSelectedText(string_drop_position); - else - edit_->InsertText(string_drop_position, text); - } else { - edit_->PasteAndGo(CollapseWhitespace(text, true)); - } - ResetDropHighlights(); - return drop_operation; - } - } - - ResetDropHighlights(); - - return DROPEFFECT_NONE; -} - -void EditDropTarget::UpdateDropHighlightPosition( - const POINT& cursor_screen_position) { - if (drag_has_string_) { - POINT client_position = cursor_screen_position; - ScreenToClient(edit_->m_hWnd, &client_position); - int drop_position = edit_->CharFromPos(client_position); - if (edit_->in_drag()) { - // Our edit originated the drag, don't allow a drop if over the selected - // region. - LONG sel_start, sel_end; - edit_->GetSel(sel_start, sel_end); - if ((sel_start != sel_end) && (drop_position >= sel_start) && - (drop_position <= sel_end)) - drop_position = -1; - } else { - // A drop from a source other than the edit replaces all the text, so - // we don't show the drop location. See comment in OnDragEnter as to why - // we don't try and select all here. - drop_position = -1; - } - edit_->SetDropHighlightPosition(drop_position); - } -} - -void EditDropTarget::ResetDropHighlights() { - if (drag_has_string_) - edit_->SetDropHighlightPosition(-1); -} diff --git a/chrome/browser/autocomplete/edit_drop_target.h b/chrome/browser/autocomplete/edit_drop_target.h deleted file mode 100644 index c032544..0000000 --- a/chrome/browser/autocomplete/edit_drop_target.h +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#ifndef CHROME_BROWSER_AUTOCOMPLETE_EDIT_DROP_TARGET_H_ -#define CHROME_BROWSER_AUTOCOMPLETE_EDIT_DROP_TARGET_H_ - -#include "base/base_drop_target.h" - -class AutocompleteEditView; - -// EditDropTarget is the IDropTarget implementation installed on -// AutocompleteEditView. EditDropTarget prefers URL over plain text. A drop of a -// URL replaces all the text of the edit and navigates immediately to the URL. A -// drop of plain text from the same edit either copies or moves the selected -// text, and a drop of plain text from a source other than the edit does a paste -// and go. -class EditDropTarget : public BaseDropTarget { - public: - explicit EditDropTarget(AutocompleteEditView* edit); - - protected: - virtual DWORD OnDragEnter(IDataObject* data_object, - DWORD key_state, - POINT cursor_position, - DWORD effect); - virtual DWORD OnDragOver(IDataObject* data_object, - DWORD key_state, - POINT cursor_position, - DWORD effect); - virtual void OnDragLeave(IDataObject* data_object); - virtual DWORD OnDrop(IDataObject* data_object, - DWORD key_state, - POINT cursor_position, - DWORD effect); - - private: - // If dragging a string, the drop highlight position of the edit is reset - // based on the mouse position. - void UpdateDropHighlightPosition(const POINT& cursor_screen_position); - - // Resets the visual drop indicates we install on the edit. - void ResetDropHighlights(); - - // The edit we're the drop target for. - AutocompleteEditView* edit_; - - // If true, the drag session contains a URL. - bool drag_has_url_; - - // If true, the drag session contains a string. If drag_has_url_ is true, - // this is false regardless of whether the clipboard has a string. - bool drag_has_string_; - - DISALLOW_EVIL_CONSTRUCTORS(EditDropTarget); -}; - -#endif // CHROME_BROWSER_AUTOCOMPLETE_EDIT_DROP_TARGET_H_ diff --git a/chrome/browser/automation/automation_autocomplete_edit_tracker.h b/chrome/browser/automation/automation_autocomplete_edit_tracker.h index e6d4cbd..717a760 100644 --- a/chrome/browser/automation/automation_autocomplete_edit_tracker.h +++ b/chrome/browser/automation/automation_autocomplete_edit_tracker.h @@ -6,6 +6,7 @@ #define CHROME_BROWSER_AUTOMATION_AUTOMATION_AUTOCOMPLETE_EDIT_TRACKER_H__ #include "chrome/browser/autocomplete/autocomplete_edit.h" +#include "chrome/browser/autocomplete/autocomplete_edit_view.h" #include "chrome/browser/automation/automation_resource_tracker.h" class AutomationAutocompleteEditTracker: diff --git a/chrome/browser/browser.vcproj b/chrome/browser/browser.vcproj index 735c51b..cc48667 100644 --- a/chrome/browser/browser.vcproj +++ b/chrome/browser/browser.vcproj @@ -158,15 +158,19 @@ > </File> <File - RelativePath=".\autocomplete\autocomplete_popup_model.cc" + RelativePath=".\autocomplete\autocomplete_edit_view.h" > </File> <File - RelativePath=".\autocomplete\autocomplete_popup_model.h" + RelativePath=".\autocomplete\autocomplete_edit_view_win.cc" > </File> <File - RelativePath=".\autocomplete\autocomplete_popup_view_win.cc" + RelativePath=".\autocomplete\autocomplete_edit_view_win.h" + > + </File> + <File + RelativePath=".\autocomplete\autocomplete_popup_model.cc" > </File> <File @@ -178,11 +182,15 @@ > </File> <File - RelativePath=".\autocomplete\edit_drop_target.cc" + RelativePath=".\autocomplete\autocomplete_popup_model.h" + > + </File> + <File + RelativePath=".\autocomplete\autocomplete_popup_view_win.cc" > </File> <File - RelativePath=".\autocomplete\edit_drop_target.h" + RelativePath=".\autocomplete\autocomplete_popup_view.h" > </File> <File diff --git a/chrome/browser/views/location_bar_view.cc b/chrome/browser/views/location_bar_view.cc index 7cd64a7..8290b01 100644 --- a/chrome/browser/views/location_bar_view.cc +++ b/chrome/browser/views/location_bar_view.cc @@ -119,10 +119,10 @@ void LocationBarView::Init() { // URL edit field. views::Widget* widget = GetWidget(); - location_entry_.reset(new AutocompleteEditView(font_, this, model_, this, - widget->GetHWND(), - profile_, command_updater_, - popup_window_mode_)); + location_entry_.reset(new AutocompleteEditViewWin(font_, this, model_, this, + widget->GetHWND(), + profile_, command_updater_, + popup_window_mode_)); // View container for URL edit field. location_entry_view_ = new views::HWNDView; diff --git a/chrome/browser/views/location_bar_view.h b/chrome/browser/views/location_bar_view.h index ef8c73b..9038135 100644 --- a/chrome/browser/views/location_bar_view.h +++ b/chrome/browser/views/location_bar_view.h @@ -9,6 +9,7 @@ #include "base/gfx/rect.h" #include "chrome/browser/autocomplete/autocomplete_edit.h" +#include "chrome/browser/autocomplete/autocomplete_edit_view_win.h" #include "chrome/browser/location_bar.h" #include "chrome/browser/tab_contents/tab_contents.h" #include "chrome/browser/toolbar_model.h" @@ -335,7 +336,7 @@ class LocationBarView : public LocationBar, Profile* profile_; // The Autocomplete Edit field. - scoped_ptr<AutocompleteEditView> location_entry_; + scoped_ptr<AutocompleteEditViewWin> location_entry_; // The CommandUpdater for the Browser object that corresponds to this View. CommandUpdater* command_updater_; |