Move browser/views to browser/ui/views

TBR=brettw
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/4694005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@65508 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 526 insertions, 0 deletions

diff --git a/chrome/browser/ui/views/find_bar_view.cc b/chrome/browser/ui/views/find_bar_view.cc
new file mode 100644
index 0000000..7132553
--- /dev/null
+++ b/chrome/browser/ui/views/find_bar_view.cc
@@ -0,0 +1,526 @@
+// Copyright (c) 2010 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/views/find_bar_view.h"
+
+#include <algorithm>
+
+#include "app/l10n_util.h"
+#include "app/resource_bundle.h"
+#include "base/string_number_conversions.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/find_bar_controller.h"
+#include "chrome/browser/find_bar_state.h"
+#include "chrome/browser/profile.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/browser/themes/browser_theme_provider.h"
+#include "chrome/browser/view_ids.h"
+#include "chrome/browser/views/find_bar_host.h"
+#include "chrome/browser/views/frame/browser_view.h"
+#include "gfx/canvas.h"
+#include "grit/generated_resources.h"
+#include "grit/theme_resources.h"
+#include "third_party/skia/include/effects/SkGradientShader.h"
+#include "views/background.h"
+#include "views/controls/button/image_button.h"
+#include "views/controls/label.h"
+#include "views/widget/widget.h"
+
+// The amount of whitespace to have before the find button.
+static const int kWhiteSpaceAfterMatchCountLabel = 1;
+
+// The margins around the search field and the close button.
+static const int kMarginLeftOfCloseButton = 3;
+static const int kMarginRightOfCloseButton = 7;
+static const int kMarginLeftOfFindTextfield = 12;
+
+// The margins around the match count label (We add extra space so that the
+// background highlight extends beyond just the text).
+static const int kMatchCountExtraWidth = 9;
+
+// Minimum width for the match count label.
+static const int kMatchCountMinWidth = 30;
+
+// The text color for the match count label.
+static const SkColor kTextColorMatchCount = SkColorSetRGB(178, 178, 178);
+
+// The text color for the match count label when no matches are found.
+static const SkColor kTextColorNoMatch = SK_ColorBLACK;
+
+// The background color of the match count label when results are found.
+static const SkColor kBackgroundColorMatch = SK_ColorWHITE;
+
+// The background color of the match count label when no results are found.
+static const SkColor kBackgroundColorNoMatch = SkColorSetRGB(255, 102, 102);
+
+// The background images for the dialog. They are split into a left, a middle
+// and a right part. The middle part determines the height of the dialog. The
+// middle part is stretched to fill any remaining part between the left and the
+// right image, after sizing the dialog to kWindowWidth.
+static const SkBitmap* kDialog_left = NULL;
+static const SkBitmap* kDialog_middle = NULL;
+static const SkBitmap* kDialog_right = NULL;
+
+// When we are animating, we draw only the top part of the left and right
+// edges to give the illusion that the find dialog is attached to the
+// window during this animation; this is the height of the items we draw.
+static const int kAnimatingEdgeHeight = 5;
+
+// The background image for the Find text box, which we draw behind the Find box
+// to provide the Chrome look to the edge of the text box.
+static const SkBitmap* kBackground = NULL;
+
+// The rounded edge on the left side of the Find text box.
+static const SkBitmap* kBackground_left = NULL;
+
+// The default number of average characters that the text box will be. This
+// number brings the width on a "regular fonts" system to about 300px.
+static const int kDefaultCharWidth = 43;
+
+////////////////////////////////////////////////////////////////////////////////
+// FindBarView, public:
+
+FindBarView::FindBarView(FindBarHost* host)
+    : DropdownBarView(host),
+#if defined(OS_LINUX)
+      ignore_contents_changed_(false),
+#endif
+      find_text_(NULL),
+      match_count_text_(NULL),
+      focus_forwarder_view_(NULL),
+      find_previous_button_(NULL),
+      find_next_button_(NULL),
+      close_button_(NULL) {
+  SetID(VIEW_ID_FIND_IN_PAGE);
+  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+
+  find_text_ = new views::Textfield();
+  find_text_->SetID(VIEW_ID_FIND_IN_PAGE_TEXT_FIELD);
+  find_text_->SetFont(rb.GetFont(ResourceBundle::BaseFont));
+  find_text_->set_default_width_in_chars(kDefaultCharWidth);
+  find_text_->SetController(this);
+  find_text_->SetAccessibleName(l10n_util::GetString(IDS_ACCNAME_FIND));
+  AddChildView(find_text_);
+
+  match_count_text_ = new views::Label();
+  match_count_text_->SetFont(rb.GetFont(ResourceBundle::BaseFont));
+  match_count_text_->SetColor(kTextColorMatchCount);
+  match_count_text_->SetHorizontalAlignment(views::Label::ALIGN_CENTER);
+  AddChildView(match_count_text_);
+
+  // Create a focus forwarder view which sends focus to find_text_.
+  focus_forwarder_view_ = new FocusForwarderView(find_text_);
+  AddChildView(focus_forwarder_view_);
+
+  find_previous_button_ = new views::ImageButton(this);
+  find_previous_button_->set_tag(FIND_PREVIOUS_TAG);
+  find_previous_button_->SetFocusable(true);
+  find_previous_button_->SetImage(views::CustomButton::BS_NORMAL,
+      rb.GetBitmapNamed(IDR_FINDINPAGE_PREV));
+  find_previous_button_->SetImage(views::CustomButton::BS_HOT,
+      rb.GetBitmapNamed(IDR_FINDINPAGE_PREV_H));
+  find_previous_button_->SetImage(views::CustomButton::BS_DISABLED,
+      rb.GetBitmapNamed(IDR_FINDINPAGE_PREV_P));
+  find_previous_button_->SetTooltipText(
+      l10n_util::GetString(IDS_FIND_IN_PAGE_PREVIOUS_TOOLTIP));
+  find_previous_button_->SetAccessibleName(
+      l10n_util::GetString(IDS_ACCNAME_PREVIOUS));
+  AddChildView(find_previous_button_);
+
+  find_next_button_ = new views::ImageButton(this);
+  find_next_button_->set_tag(FIND_NEXT_TAG);
+  find_next_button_->SetFocusable(true);
+  find_next_button_->SetImage(views::CustomButton::BS_NORMAL,
+      rb.GetBitmapNamed(IDR_FINDINPAGE_NEXT));
+  find_next_button_->SetImage(views::CustomButton::BS_HOT,
+      rb.GetBitmapNamed(IDR_FINDINPAGE_NEXT_H));
+  find_next_button_->SetImage(views::CustomButton::BS_DISABLED,
+      rb.GetBitmapNamed(IDR_FINDINPAGE_NEXT_P));
+  find_next_button_->SetTooltipText(
+      l10n_util::GetString(IDS_FIND_IN_PAGE_NEXT_TOOLTIP));
+  find_next_button_->SetAccessibleName(l10n_util::GetString(IDS_ACCNAME_NEXT));
+  AddChildView(find_next_button_);
+
+  close_button_ = new views::ImageButton(this);
+  close_button_->set_tag(CLOSE_TAG);
+  close_button_->SetFocusable(true);
+  close_button_->SetImage(views::CustomButton::BS_NORMAL,
+                          rb.GetBitmapNamed(IDR_CLOSE_BAR));
+  close_button_->SetImage(views::CustomButton::BS_HOT,
+                          rb.GetBitmapNamed(IDR_CLOSE_BAR_H));
+  close_button_->SetImage(views::CustomButton::BS_PUSHED,
+                          rb.GetBitmapNamed(IDR_CLOSE_BAR_P));
+  close_button_->SetTooltipText(
+      l10n_util::GetString(IDS_FIND_IN_PAGE_CLOSE_TOOLTIP));
+  close_button_->SetAccessibleName(l10n_util::GetString(IDS_ACCNAME_CLOSE));
+  AddChildView(close_button_);
+
+  if (kDialog_left == NULL) {
+    // Background images for the dialog.
+    kDialog_left = rb.GetBitmapNamed(IDR_FIND_DIALOG_LEFT);
+    kDialog_middle = rb.GetBitmapNamed(IDR_FIND_DIALOG_MIDDLE);
+    kDialog_right = rb.GetBitmapNamed(IDR_FIND_DIALOG_RIGHT);
+
+    // Background images for the Find edit box.
+    kBackground = rb.GetBitmapNamed(IDR_FIND_BOX_BACKGROUND);
+    kBackground_left = rb.GetBitmapNamed(IDR_FIND_BOX_BACKGROUND_LEFT);
+  }
+}
+
+FindBarView::~FindBarView() {
+}
+
+void FindBarView::SetFindText(const string16& find_text) {
+#if defined(OS_LINUX)
+  ignore_contents_changed_ = true;
+#endif
+  find_text_->SetText(find_text);
+#if defined(OS_LINUX)
+  ignore_contents_changed_ = false;
+#endif
+}
+
+string16 FindBarView::GetFindText() const {
+  return find_text_->text();
+}
+
+void FindBarView::UpdateForResult(const FindNotificationDetails& result,
+                                  const string16& find_text) {
+  bool have_valid_range =
+      result.number_of_matches() != -1 && result.active_match_ordinal() != -1;
+
+  // http://crbug.com/34970: some IMEs get confused if we change the text
+  // composed by them. To avoid this problem, we should check the IME status and
+  // update the text only when the IME is not composing text.
+  if (find_text_->text() != find_text && !find_text_->IsIMEComposing()) {
+    find_text_->SetText(find_text);
+    find_text_->SelectAll();
+  }
+
+  if (!find_text.empty() && have_valid_range) {
+    match_count_text_->SetText(
+        l10n_util::GetStringF(IDS_FIND_IN_PAGE_COUNT,
+            UTF8ToWide(base::IntToString(result.active_match_ordinal())),
+            UTF8ToWide(base::IntToString(result.number_of_matches()))));
+
+    UpdateMatchCountAppearance(result.number_of_matches() == 0 &&
+                               result.final_update());
+  } else {
+    // If there was no text entered, we don't show anything in the result count
+    // area.
+    match_count_text_->SetText(std::wstring());
+
+    UpdateMatchCountAppearance(false);
+  }
+
+  // The match_count label may have increased/decreased in size so we need to
+  // do a layout and repaint the dialog so that the find text field doesn't
+  // partially overlap the match-count label when it increases on no matches.
+  Layout();
+  SchedulePaint();
+}
+
+void FindBarView::SetFocusAndSelection(bool select_all) {
+  find_text_->RequestFocus();
+  if (select_all && !find_text_->text().empty())
+    find_text_->SelectAll();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// FindBarView, views::View overrides:
+
+void FindBarView::Paint(gfx::Canvas* canvas) {
+  SkPaint paint;
+
+  // Determine the find bar size as well as the offset from which to tile the
+  // toolbar background image.  First, get the widget bounds.
+  gfx::Rect bounds;
+  GetWidget()->GetBounds(&bounds, true);
+  // Now convert from screen to parent coordinates.
+  gfx::Point origin(bounds.origin());
+  BrowserView* browser_view = host()->browser_view();
+  ConvertPointToView(NULL, browser_view, &origin);
+  bounds.set_origin(origin);
+  // Finally, calculate the background image tiling offset.
+  origin = browser_view->OffsetPointForToolbarBackgroundImage(origin);
+
+  // First, we draw the background image for the whole dialog (3 images: left,
+  // middle and right). Note, that the window region has been set by the
+  // controller, so the whitespace in the left and right background images is
+  // actually outside the window region and is therefore not drawn. See
+  // FindInPageWidgetWin::CreateRoundedWindowEdges() for details.
+  ThemeProvider* tp = GetThemeProvider();
+  canvas->TileImageInt(*tp->GetBitmapNamed(IDR_THEME_TOOLBAR), origin.x(),
+                       origin.y(), 0, 0, bounds.width(), bounds.height());
+
+  // Now flip the canvas for the rest of the graphics if in RTL mode.
+  canvas->Save();
+  if (base::i18n::IsRTL()) {
+    canvas->TranslateInt(width(), 0);
+    canvas->ScaleInt(-1, 1);
+  }
+
+  canvas->DrawBitmapInt(*kDialog_left, 0, 0);
+
+  // Stretch the middle background to cover all of the area between the two
+  // other images.
+  canvas->TileImageInt(*kDialog_middle, kDialog_left->width(), 0,
+      bounds.width() - kDialog_left->width() - kDialog_right->width(),
+      kDialog_middle->height());
+
+  canvas->DrawBitmapInt(*kDialog_right, bounds.width() - kDialog_right->width(),
+                        0);
+
+  // Then we draw the background image for the Find Textfield. We start by
+  // calculating the position of background images for the Find text box.
+  int find_text_x = find_text_->x();
+  gfx::Point back_button_origin = find_previous_button_->bounds().origin();
+
+  // Draw the image to the left that creates a curved left edge for the box.
+  canvas->TileImageInt(*kBackground_left,
+      find_text_x - kBackground_left->width(), back_button_origin.y(),
+      kBackground_left->width(), kBackground_left->height());
+
+  // Draw the top and bottom border for whole text box (encompasses both the
+  // find_text_ edit box and the match_count_text_ label).
+  canvas->TileImageInt(*kBackground, find_text_x, back_button_origin.y(),
+                       back_button_origin.x() - find_text_x,
+                       kBackground->height());
+
+  if (animation_offset() > 0) {
+    // While animating we draw the curved edges at the point where the
+    // controller told us the top of the window is: |animation_offset()|.
+    canvas->TileImageInt(*kDialog_left, bounds.x(), animation_offset(),
+                         kDialog_left->width(), kAnimatingEdgeHeight);
+    canvas->TileImageInt(*kDialog_right,
+        bounds.width() - kDialog_right->width(), animation_offset(),
+        kDialog_right->width(), kAnimatingEdgeHeight);
+  }
+
+  canvas->Restore();
+}
+
+void FindBarView::Layout() {
+  gfx::Size panel_size = GetPreferredSize();
+
+  // First we draw the close button on the far right.
+  gfx::Size sz = close_button_->GetPreferredSize();
+  close_button_->SetBounds(panel_size.width() - sz.width() -
+                               kMarginRightOfCloseButton,
+                           (height() - sz.height()) / 2,
+                           sz.width(),
+                           sz.height());
+  // Set the color.
+  OnThemeChanged();
+
+  // Next, the FindNext button to the left the close button.
+  sz = find_next_button_->GetPreferredSize();
+  find_next_button_->SetBounds(close_button_->x() -
+                                   find_next_button_->width() -
+                                   kMarginLeftOfCloseButton,
+                               (height() - sz.height()) / 2,
+                                sz.width(),
+                                sz.height());
+
+  // Then, the FindPrevious button to the left the FindNext button.
+  sz = find_previous_button_->GetPreferredSize();
+  find_previous_button_->SetBounds(find_next_button_->x() -
+                                       find_previous_button_->width(),
+                                   (height() - sz.height()) / 2,
+                                   sz.width(),
+                                   sz.height());
+
+  // Then the label showing the match count number.
+  sz = match_count_text_->GetPreferredSize();
+  // We want to make sure the red "no-match" background almost completely fills
+  // up the amount of vertical space within the text box. We therefore fix the
+  // size relative to the button heights. We use the FindPrev button, which has
+  // a 1px outer whitespace margin, 1px border and we want to appear 1px below
+  // the border line so we subtract 3 for top and 3 for bottom.
+  sz.set_height(find_previous_button_->height() - 6);  // Subtract 3px x 2.
+
+  // We extend the label bounds a bit to give the background highlighting a bit
+  // of breathing room (margins around the text).
+  sz.Enlarge(kMatchCountExtraWidth, 0);
+  sz.set_width(std::max(kMatchCountMinWidth, static_cast<int>(sz.width())));
+  int match_count_x = find_previous_button_->x() -
+                      kWhiteSpaceAfterMatchCountLabel -
+                      sz.width();
+  match_count_text_->SetBounds(match_count_x,
+                               (height() - sz.height()) / 2,
+                               sz.width(),
+                               sz.height());
+
+  // And whatever space is left in between, gets filled up by the find edit box.
+  sz = find_text_->GetPreferredSize();
+  sz.set_width(match_count_x - kMarginLeftOfFindTextfield);
+  find_text_->SetBounds(match_count_x - sz.width(),
+                        (height() - sz.height()) / 2 + 1,
+                        sz.width(),
+                        sz.height());
+
+  // The focus forwarder view is a hidden view that should cover the area
+  // between the find text box and the find button so that when the user clicks
+  // in that area we focus on the find text box.
+  int find_text_edge = find_text_->x() + find_text_->width();
+  focus_forwarder_view_->SetBounds(find_text_edge,
+                                   find_previous_button_->y(),
+                                   find_previous_button_->x() -
+                                       find_text_edge,
+                                   find_previous_button_->height());
+}
+
+void FindBarView::ViewHierarchyChanged(bool is_add, View* parent, View* child) {
+  if (is_add && child == this) {
+    find_text_->SetHorizontalMargins(3, 3);  // Left and Right margins.
+    find_text_->RemoveBorder();  // We draw our own border (a background image).
+  }
+}
+
+gfx::Size FindBarView::GetPreferredSize() {
+  gfx::Size prefsize = find_text_->GetPreferredSize();
+  prefsize.set_height(kDialog_middle->height());
+
+  // Add up all the preferred sizes and margins of the rest of the controls.
+  prefsize.Enlarge(kMarginLeftOfCloseButton + kMarginRightOfCloseButton +
+                       kMarginLeftOfFindTextfield,
+                   0);
+  prefsize.Enlarge(find_previous_button_->GetPreferredSize().width(), 0);
+  prefsize.Enlarge(find_next_button_->GetPreferredSize().width(), 0);
+  prefsize.Enlarge(close_button_->GetPreferredSize().width(), 0);
+  return prefsize;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// FindBarView, views::ButtonListener implementation:
+
+void FindBarView::ButtonPressed(
+    views::Button* sender, const views::Event& event) {
+  switch (sender->tag()) {
+    case FIND_PREVIOUS_TAG:
+    case FIND_NEXT_TAG:
+      if (!find_text_->text().empty()) {
+        find_bar_host()->GetFindBarController()->tab_contents()->
+            StartFinding(find_text_->text(),
+                         sender->tag() == FIND_NEXT_TAG,
+                         false);  // Not case sensitive.
+      }
+      if (event.IsMouseEvent()) {
+        // If mouse event, we move the focus back to the text-field, so that the
+        // user doesn't have to click on the text field to change the search. We
+        // don't want to do this for keyboard clicks on the button, since the
+        // user is more likely to press FindNext again than change the search
+        // query.
+        find_text_->RequestFocus();
+      }
+      break;
+    case CLOSE_TAG:
+      find_bar_host()->GetFindBarController()->EndFindSession(
+          FindBarController::kKeepSelection);
+      break;
+    default:
+      NOTREACHED() << L"Unknown button";
+      break;
+  }
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// FindBarView, views::Textfield::Controller implementation:
+
+void FindBarView::ContentsChanged(views::Textfield* sender,
+                                  const string16& new_contents) {
+#if defined(OS_LINUX)
+  // On gtk setting the text in the find view causes a notification.
+  if (ignore_contents_changed_)
+    return;
+#endif
+
+  FindBarController* controller = find_bar_host()->GetFindBarController();
+  DCHECK(controller);
+  // We must guard against a NULL tab_contents, which can happen if the text
+  // in the Find box is changed right after the tab is destroyed. Otherwise, it
+  // can lead to crashes, as exposed by automation testing in issue 8048.
+  if (!controller->tab_contents())
+    return;
+
+  // When the user changes something in the text box we check the contents and
+  // if the textbox contains something we set it as the new search string and
+  // initiate search (even though old searches might be in progress).
+  if (!new_contents.empty()) {
+    // The last two params here are forward (true) and case sensitive (false).
+    controller->tab_contents()->StartFinding(new_contents, true, false);
+  } else {
+    controller->tab_contents()->StopFinding(FindBarController::kClearSelection);
+    UpdateForResult(controller->tab_contents()->find_result(), string16());
+
+    // Clearing the text box should clear the prepopulate state so that when
+    // we close and reopen the Find box it doesn't show the search we just
+    // deleted. We can't do this on ChromeOS yet because we get ContentsChanged
+    // sent for a lot more things than just the user nulling out the search
+    // terms. See http://crbug.com/45372.
+    FindBarState* find_bar_state =
+        controller->tab_contents()->profile()->GetFindBarState();
+    find_bar_state->set_last_prepopulate_text(string16());
+  }
+}
+
+bool FindBarView::HandleKeystroke(views::Textfield* sender,
+                                  const views::Textfield::Keystroke& key) {
+  // If the dialog is not visible, there is no reason to process keyboard input.
+  if (!host()->IsVisible())
+    return false;
+
+  if (find_bar_host()->MaybeForwardKeystrokeToWebpage(key))
+    return true;  // Handled, we are done!
+
+  if (key.GetKeyboardCode() == app::VKEY_RETURN) {
+    // Pressing Return/Enter starts the search (unless text box is empty).
+    string16 find_string = find_text_->text();
+    if (!find_string.empty()) {
+      // Search forwards for enter, backwards for shift-enter.
+      find_bar_host()->GetFindBarController()->tab_contents()->StartFinding(
+          find_string,
+          !key.IsShiftHeld(),
+          false);  // Not case sensitive.
+    }
+  }
+
+  return false;
+}
+
+void FindBarView::UpdateMatchCountAppearance(bool no_match) {
+  if (no_match) {
+    match_count_text_->set_background(
+        views::Background::CreateSolidBackground(kBackgroundColorNoMatch));
+    match_count_text_->SetColor(kTextColorNoMatch);
+  } else {
+    match_count_text_->set_background(
+      views::Background::CreateSolidBackground(kBackgroundColorMatch));
+    match_count_text_->SetColor(kTextColorMatchCount);
+  }
+}
+
+bool FindBarView::FocusForwarderView::OnMousePressed(
+    const views::MouseEvent& event) {
+  if (view_to_focus_on_mousedown_) {
+    view_to_focus_on_mousedown_->ClearSelection();
+    view_to_focus_on_mousedown_->RequestFocus();
+  }
+  return true;
+}
+
+FindBarHost* FindBarView::find_bar_host() const {
+  return static_cast<FindBarHost*>(host());
+}
+
+void FindBarView::OnThemeChanged() {
+  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+  if (GetThemeProvider()) {
+    close_button_->SetBackground(
+        GetThemeProvider()->GetColor(BrowserThemeProvider::COLOR_TAB_TEXT),
+        rb.GetBitmapNamed(IDR_CLOSE_BAR),
+        rb.GetBitmapNamed(IDR_CLOSE_BAR_MASK));
+  }
+}