/*
* Copyright 2007 Google Inc. All Rights Reserved.
*
* Portions Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* ***** BEGIN LICENSE BLOCK *****
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK *****
*
*/
#include "config.h"
#pragma warning(push, 0)
#include "Cursor.h"
#include "Document.h"
#include "DragController.h"
#include "DragData.h"
#include "Editor.h"
#include "EventHandler.h"
#include "FocusController.h"
#include "FontDescription.h"
#include "FrameLoader.h"
#include "FrameTree.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HitTestResult.h"
#include "Image.h"
#include "InspectorController.h"
#include "IntRect.h"
#include "KeyboardEvent.h"
#include "MIMETypeRegistry.h"
#include "Page.h"
#include "Pasteboard.h"
#include "PlatformKeyboardEvent.h"
#include "PlatformMouseEvent.h"
#include "PlatformWheelEvent.h"
#include "PluginInfoStore.h"
#include "RenderThemeWin.h"
#include "ResourceHandle.h"
#include "SelectionController.h"
#include "Settings.h"
#include "TypingCommand.h"
#include "event_conversion.h"
#pragma warning(pop)
#undef LOG
#include "base/gfx/rect.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "webkit/glue/chrome_client_impl.h"
#include "webkit/glue/context_menu_client_impl.h"
#include "webkit/glue/dragclient_impl.h"
#include "webkit/glue/editor_client_impl.h"
#include "webkit/glue/event_conversion.h"
#include "webkit/glue/glue_serialize.h"
#include "webkit/glue/glue_util.h"
#include "webkit/glue/image_resource_fetcher.h"
#include "webkit/glue/inspector_client_impl.h"
#include "webkit/glue/searchable_form_data.h"
#include "webkit/glue/webdropdata.h"
#include "webkit/glue/webhistoryitem_impl.h"
#include "webkit/glue/webinputevent.h"
#include "webkit/glue/webkit_glue.h"
#include "webkit/glue/webpreferences.h"
#include "webkit/glue/webview_delegate.h"
#include "webkit/glue/webview_impl.h"
#include "webkit/glue/webwidget_impl.h"
#include "webkit/port/platform/graphics/PlatformContextSkia.h"
// Get rid of WTF's pow define so we can use std::pow.
#undef pow
using namespace WebCore;
// Change the text zoom level by kTextSizeMultiplierRatio each time the user
// zooms text in or out (ie., change by 20%). The min and max values limit
// text zoom to half and 3x the original text size. These three values match
// those in Apple's port in WebKit/WebKit/WebView/WebView.mm
static const double kTextSizeMultiplierRatio = 1.2;
static const double kMinTextSizeMultiplier = 0.5;
static const double kMaxTextSizeMultiplier = 3.0;
// The webcore drag operation type when something is trying to be dropped on
// the webview. These values are taken from Apple's windows port.
static const WebCore::DragOperation kDropTargetOperation =
static_cast<WebCore::DragOperation>(DragOperationCopy | DragOperationLink);
// WebView ----------------------------------------------------------------
/*static*/
WebView* WebView::Create(WebViewDelegate* delegate,
const WebPreferences& prefs) {
WebViewImpl* instance = new WebViewImpl();
instance->AddRef();
instance->SetPreferences(prefs);
instance->main_frame_->InitMainFrame(instance);
// Set the delegate after initializing the main frame, to avoid trying to
// respond to notifications before we're fully initialized.
instance->delegate_ = delegate;
// Restrict the access to the local file system
// (see WebView.mm WebView::_commonInitializationWithFrameName).
FrameLoader::setRestrictAccessToLocal(true);
return instance;
}
WebViewImpl::WebViewImpl()
: delegate_(NULL),
pending_history_item_(NULL),
#ifndef NDEBUG
new_navigation_loader_(NULL),
#endif
observed_new_navigation_(false),
text_zoom_level_(0),
context_menu_allowed_(false),
doing_drag_and_drop_(false),
suppress_next_keypress_event_(false),
window_open_disposition_(IGNORE_ACTION),
ime_accept_events_(true) {
// set to impossible point so we always get the first mouse pos
last_mouse_position_.SetPoint(-1, -1);
// the page will take ownership of the various clients
page_.reset(new Page(new ChromeClientImpl(this),
new ContextMenuClientImpl(this),
new EditorClientImpl(this),
new DragClientImpl(this),
new WebInspectorClient(this)));
page_->backForwardList()->setClient(this);
// The group name identifies a namespace of pages. I'm not sure how it's
// intended to be used, but keeping all pages in the same group works for us.
page_->setGroupName("default");
// This is created with a refcount of 1, and we assign it to a RefPtr,
// giving a refcount of 2. The ref is done on behalf of
// FrameWin/FrameLoaderWin which references the WebFrame via the
// FrameWinClient/FrameLoaderClient interfaces. See the comment at the
// top of webframe_impl.cc
main_frame_ = new WebFrameImpl();
}
WebViewImpl::~WebViewImpl() {
DCHECK(main_frame_ == NULL);
DCHECK(page_ == NULL);
ReleaseFocusReferences();
for (std::set<ImageResourceFetcher*>::iterator i = image_fetchers_.begin();
i != image_fetchers_.end(); ++i) {
delete *i;
}
}
void WebViewImpl::SetUseEditorDelegate(bool value) {
ASSERT(page_ != 0); // The macro doesn't like (!page_) with a scoped_ptr.
ASSERT(page_->editorClient());
EditorClientImpl* editor_client =
static_cast<EditorClientImpl*>(page_->editorClient());
editor_client->SetUseEditorDelegate(value);
}
void WebViewImpl::SetTabKeyCyclesThroughElements(bool value) {
if (page_ != NULL) {
page_->setTabKeyCyclesThroughElements(value);
}
}
void WebViewImpl::MouseMove(const WebMouseEvent& event) {
if (!main_frame_->frameview())
return;
last_mouse_position_.SetPoint(event.x, event.y);
// We call mouseMoved here instead of handleMouseMovedEvent because we need
// our ChromeClientImpl to receive changes to the mouse position and
// tooltip text, and mouseMoved handles all of that.
main_frame_->frameview()->frame()->eventHandler()->mouseMoved(
MakePlatformMouseEvent(main_frame_->frameview(), event));
}
void WebViewImpl::MouseLeave(const WebMouseEvent& event) {
// This event gets sent as the main frame is closing. In that case, just
// ignore it.
if (!main_frame_ || !main_frame_->frameview())
return;
delegate_->UpdateTargetURL(this, GURL());
main_frame_->frameview()->frame()->eventHandler()->handleMouseMoveEvent(
MakePlatformMouseEvent(main_frame_->frameview(), event));
}
void WebViewImpl::MouseDown(const WebMouseEvent& event) {
if (!main_frame_->frameview())
return;
last_mouse_down_point_ = gfx::Point(event.x, event.y);
main_frame_->frame()->eventHandler()->handleMousePressEvent(
MakePlatformMouseEvent(main_frame_->frameview(), event));
}
void WebViewImpl::MouseUp(const WebMouseEvent& event) {
if (event.button == WebMouseEvent::BUTTON_RIGHT) {
page_->contextMenuController()->clearContextMenu();
MakePlatformMouseEvent pme(main_frame_->frameview(), event);
// Find the right target frame. See issue 1186900.
IntPoint doc_point(
main_frame_->frame()->view()->windowToContents(pme.pos()));
HitTestResult result =
main_frame_->frame()->eventHandler()->hitTestResultAtPoint(doc_point,
false);
Frame* target_frame;
if (result.innerNonSharedNode())
target_frame = result.innerNonSharedNode()->document()->frame();
else
target_frame = page_->focusController()->focusedOrMainFrame();
target_frame->view()->setCursor(pointerCursor());
context_menu_allowed_ = true;
target_frame->eventHandler()->sendContextMenuEvent(pme);
context_menu_allowed_ = false;
// Actually showing the context menu is handled by the ContextMenuClient
// implementation...
}
if (!main_frame_->frameview())
return;
MouseCaptureLost();
main_frame_->frameview()->frame()->eventHandler()->handleMouseReleaseEvent(
MakePlatformMouseEvent(main_frame_->frameview(), event));
}
void WebViewImpl::MouseWheel(const WebMouseWheelEvent& event) {
main_frame_->frame()->eventHandler()->handleWheelEvent(
MakePlatformWheelEvent(main_frame_->frameview(), event));
}
bool WebViewImpl::KeyEvent(const WebKeyboardEvent& event) {
DCHECK((event.type == WebInputEvent::KEY_DOWN) ||
(event.type == WebInputEvent::KEY_UP));
// Please refer to the comments explaining the suppress_next_keypress_event_
// member.
// The suppress_next_keypress_event_ is set if the KeyDown is handled by
// Webkit. A keyDown event is typically associated with a keyPress(char)
// event and a keyUp event. We reset this flag here as this is a new keyDown
// event.
suppress_next_keypress_event_ = false;
Frame* frame = GetFocusedWebCoreFrame();
if (!frame)
return false;
EventHandler* handler = frame->eventHandler();
if (!handler)
return KeyEventDefault(event);
if (((event.modifiers == 0) && (event.key_code == VK_APPS)) ||
((event.modifiers == WebInputEvent::SHIFT_KEY) &&
(event.key_code == VK_F10))) {
SendContextMenuEvent(event);
return true;
}
MakePlatformKeyboardEvent evt(event);
if (WebInputEvent::KEY_DOWN == event.type) {
MakePlatformKeyboardEvent evt_rawkeydown = evt;
evt_rawkeydown.SetKeyType(WebCore::PlatformKeyboardEvent::RawKeyDown);
if (handler->keyEvent(evt_rawkeydown) && !evt_rawkeydown.isSystemKey()) {
suppress_next_keypress_event_ = true;
return true;
}
} else {
if (handler->keyEvent(evt)) {
return true;
}
}
return KeyEventDefault(event);
}
bool WebViewImpl::CharEvent(const WebKeyboardEvent& event) {
DCHECK(event.type == WebInputEvent::CHAR);
// Please refer to the comments explaining the suppress_next_keypress_event_
// member.
// The suppress_next_keypress_event_ is set if the KeyDown is handled by
// Webkit. A keyDown event is typically associated with a keyPress(char)
// event and a keyUp event. We reset this flag here as it only applies
// to the current keyPress event.
if (suppress_next_keypress_event_) {
suppress_next_keypress_event_ = false;
return true;
}
Frame* frame = GetFocusedWebCoreFrame();
if (!frame)
return false;
EventHandler* handler = frame->eventHandler();
if (!handler)
return KeyEventDefault(event);
MakePlatformKeyboardEvent evt(event);
if (!evt.IsCharacterKey())
return true;
// Safari 3.1 does not pass off WM_SYSCHAR messages to the
// eventHandler::keyEvent. We mimic this behavior.
if (evt.isSystemKey())
return handler->handleAccessKey(evt);
if (!handler->keyEvent(evt))
return KeyEventDefault(event);
return true;
}
/*
* The WebViewImpl::SendContextMenuEvent function is based on the Webkit
* function
* bool WebView::handleContextMenuEvent(WPARAM wParam, LPARAM lParam) in
* webkit\webkit\win\WebView.cpp. The only significant change in this
* function is the code to convert from a Keyboard event to the Right
* Mouse button up event.
*/
bool WebViewImpl::SendContextMenuEvent(const WebKeyboardEvent& event) {
static const int kContextMenuMargin = 1;
FrameView* view = page()->mainFrame()->view();
if (!view)
return false;
POINT coords = {-1, -1};
int right_aligned = ::GetSystemMetrics(SM_MENUDROPALIGNMENT);
IntPoint location;
// The context menu event was generated from the keyboard, so show the
// context menu by the current selection.
Position start =
page()->mainFrame()->selectionController()->selection().start();
Position end = page()->mainFrame()->selectionController()->selection().end();
if (!start.node() || !end.node()) {
location =
IntPoint(right_aligned ? view->contentsWidth() - kContextMenuMargin
: kContextMenuMargin, kContextMenuMargin);
} else {
RenderObject* renderer = start.node()->renderer();
if (!renderer)
return false;
// Calculate the rect of the first line of the selection (cribbed from
// -[WebCoreFrameBridge firstRectForDOMRange:]).
int extra_width_to_EOL = 0;
IntRect start_caret_rect = renderer->caretRect(start.offset(), DOWNSTREAM,
&extra_width_to_EOL);
IntRect end_caret_rect = renderer->caretRect(end.offset(), UPSTREAM);
IntRect first_rect;
if (start_caret_rect.y() == end_caret_rect.y()) {
first_rect = IntRect(std::min(start_caret_rect.x(), end_caret_rect.x()),
start_caret_rect.y(),
abs(end_caret_rect.x() - start_caret_rect.x()),
max(start_caret_rect.height(),
end_caret_rect.height()));
} else {
first_rect = IntRect(start_caret_rect.x(), start_caret_rect.y(),
start_caret_rect.width() + extra_width_to_EOL,
start_caret_rect.height());
}
location = IntPoint(right_aligned ? first_rect.right() :
first_rect.x(), first_rect.bottom());
}
location = view->contentsToWindow(location);
// FIXME: The IntSize(0, -1) is a hack to get the hit-testing to result in
// the selected element. Ideally we'd have the position of a context menu
// event be separate from its target node.
coords = location + IntSize(0, -1);
// The contextMenuController() holds onto the last context menu that was
// popped up on the page until a new one is created. We need to clear
// this menu before propagating the event through the DOM so that we can
// detect if we create a new menu for this event, since we won't create
// a new menu if the DOM swallows the event and the defaultEventHandler does
// not run.
page()->contextMenuController()->clearContextMenu();
Frame* focused_frame = page()->focusController()->focusedOrMainFrame();
focused_frame->view()->setCursor(pointerCursor());
WebMouseEvent mouse_event;
mouse_event.button = WebMouseEvent::BUTTON_RIGHT;
mouse_event.x = coords.x;
mouse_event.y = coords.y;
mouse_event.type = WebInputEvent::MOUSE_UP;
MakePlatformMouseEvent platform_event(view, mouse_event);
context_menu_allowed_ = true;
bool handled =
focused_frame->eventHandler()->sendContextMenuEvent(platform_event);
context_menu_allowed_ = false;
return handled;
}
bool WebViewImpl::KeyEventDefault(const WebKeyboardEvent& event) {
Frame* frame = GetFocusedWebCoreFrame();
if (!frame)
return false;
switch (event.type) {
case WebInputEvent::CHAR: {
if (event.key_code == VK_SPACE) {
int key_code = ((event.modifiers & WebInputEvent::SHIFT_KEY) ?
VK_PRIOR : VK_NEXT);
return ScrollViewWithKeyboard(key_code);
}
break;
}
case WebInputEvent::KEY_DOWN: {
if (event.modifiers == WebInputEvent::CTRL_KEY) {
switch (event.key_code) {
case 'A':
GetFocusedFrame()->SelectAll();
return true;
case VK_INSERT:
case 'C':
GetFocusedFrame()->Copy();
return true;
// Match FF behavior in the sense that Ctrl+home/end are the only Ctrl
// key combinations which affect scrolling. Safari is buggy in the
// sense that it scrolls the page for all Ctrl+scrolling key
// combinations. For e.g. Ctrl+pgup/pgdn/up/down, etc.
case VK_HOME:
case VK_END:
break;
default:
return false;
}
}
if (!event.system_key) {
return ScrollViewWithKeyboard(event.key_code);
}
break;
}
default:
break;
}
return false;
}
bool WebViewImpl::ScrollViewWithKeyboard(int key_code) {
Frame* frame = GetFocusedWebCoreFrame();
if (!frame)
return false;
ScrollDirection scroll_direction;
ScrollGranularity scroll_granularity;
switch (key_code) {
case VK_LEFT:
scroll_direction = ScrollLeft;
scroll_granularity = ScrollByLine;
break;
case VK_RIGHT:
scroll_direction = ScrollRight;
scroll_granularity = ScrollByLine;
break;
case VK_UP:
scroll_direction = ScrollUp;
scroll_granularity = ScrollByLine;
break;
case VK_DOWN:
scroll_direction = ScrollDown;
scroll_granularity = ScrollByLine;
break;
case VK_HOME:
scroll_direction = ScrollUp;
scroll_granularity = ScrollByDocument;
break;
case VK_END:
scroll_direction = ScrollDown;
scroll_granularity = ScrollByDocument;
break;
case VK_PRIOR: // page up
scroll_direction = ScrollUp;
scroll_granularity = ScrollByPage;
break;
case VK_NEXT: // page down
scroll_direction = ScrollDown;
scroll_granularity = ScrollByPage;
break;
default:
return false;
}
bool scroll_handled =
frame->eventHandler()->scrollOverflow(scroll_direction,
scroll_granularity);
Frame* current_frame = frame;
while (!scroll_handled && current_frame) {
scroll_handled = current_frame->view()->scroll(scroll_direction,
scroll_granularity);
current_frame = current_frame->tree()->parent();
}
return scroll_handled;
}
Frame* WebViewImpl::GetFocusedWebCoreFrame() {
if (!main_frame_ || !main_frame_->frame())
return NULL;
return
main_frame_->frame()->page()->focusController()->focusedOrMainFrame();
}
// static
WebViewImpl* WebViewImpl::FromPage(WebCore::Page* page) {
return WebFrameImpl::FromFrame(page->mainFrame())->webview_impl();
}
// WebView --------------------------------------------------------------------
bool WebViewImpl::ShouldClose() {
// TODO(creis): This should really cause a recursive depth-first walk of all
// frames in the tree, calling each frame's onbeforeunload. At the moment,
// we're consistent with Safari 3.1, not IE/FF.
Frame* frame = page_->focusController()->focusedOrMainFrame();
if (!frame)
return true;
return frame->shouldClose();
}
void WebViewImpl::Close() {
// Do this first to prevent reentrant notifications from being sent to the
// initiator of the close.
delegate_ = NULL;
// Initiate shutdown for the entire frameset.
if (main_frame_) {
// This will cause a lot of notifications to be sent.
main_frame_->frame()->loader()->frameDetached();
main_frame_ = NULL;
}
page_.reset();
}
WebViewDelegate* WebViewImpl::GetDelegate() {
return delegate_;
}
WebFrame* WebViewImpl::GetMainFrame() {
return main_frame_.get();
}
WebFrame* WebViewImpl::GetFocusedFrame() {
Frame* frame = GetFocusedWebCoreFrame();
return frame ? WebFrameImpl::FromFrame(frame) : NULL;
}
void WebViewImpl::SetFocusedFrame(WebFrame* frame) {
if (!frame) {
// Clears the focused frame if any.
Frame* frame = GetFocusedWebCoreFrame();
if (frame)
frame->selectionController()->setFocused(false);
return;
}
WebFrameImpl* frame_impl = static_cast<WebFrameImpl*>(frame);
WebCore::Frame* webcore_frame = frame_impl->frame();
webcore_frame->page()->focusController()->setFocusedFrame(webcore_frame);
}
WebFrame* WebViewImpl::GetFrameWithName(const std::wstring& name) {
String name_str = webkit_glue::StdWStringToString(name);
Frame* frame = main_frame_->frame()->tree()->find(name_str);
return frame ? WebFrameImpl::FromFrame(frame) : NULL;
}
WebFrame* WebViewImpl::GetPreviousFrameBefore(WebFrame* frame, bool wrap) {
WebFrameImpl* frame_impl = static_cast<WebFrameImpl*>(frame);
WebCore::Frame* previous =
frame_impl->frame()->tree()->traversePreviousWithWrap(wrap);
return previous ? WebFrameImpl::FromFrame(previous) : NULL;
}
WebFrame* WebViewImpl::GetNextFrameAfter(WebFrame* frame, bool wrap) {
WebFrameImpl* frame_impl = static_cast<WebFrameImpl*>(frame);
WebCore::Frame* next =
frame_impl->frame()->tree()->traverseNextWithWrap(wrap);
return next ? WebFrameImpl::FromFrame(next) : NULL;
}
void WebViewImpl::Resize(const gfx::Size& new_size) {
if (size_ == new_size)
return;
size_ = new_size;
if (main_frame_->frameview()) {
main_frame_->frameview()->resize(size_.width(), size_.height());
main_frame_->frame()->sendResizeEvent();
}
if (delegate_) {
gfx::Rect damaged_rect(0, 0, size_.width(), size_.height());
delegate_->DidInvalidateRect(this, damaged_rect);
}
}
void WebViewImpl::Layout() {
if (main_frame_) {
// In order for our child HWNDs (NativeWindowWidgets) to update properly,
// they need to be told that we are updating the screen. The problem is
// that the native widgets need to recalculate their clip region and not
// overlap any of our non-native widgets. To force the resizing, call
// setFrameGeometry(). This will be a quick operation for most frames, but
// the NativeWindowWidgets will update a proper clipping region.
FrameView* frameview = main_frame_->frameview();
if (frameview)
frameview->setFrameGeometry(frameview->frameGeometry());
// setFrameGeometry may have the side-effect of causing existing page
// layout to be invalidated, so layout needs to be called last.
main_frame_->Layout();
}
}
void WebViewImpl::Paint(gfx::PlatformCanvasWin* canvas, const gfx::Rect& rect) {
if (main_frame_)
main_frame_->Paint(canvas, rect);
}
// TODO(eseidel): g_current_input_event should be removed once
// ChromeClient:show() can get the current-event information from WebCore.
/* static */
const WebInputEvent* WebViewImpl::g_current_input_event = NULL;
bool WebViewImpl::HandleInputEvent(const WebInputEvent* input_event) {
// If we've started a drag and drop operation, ignore input events until
// we're done.
if (doing_drag_and_drop_)
return true;
// TODO(eseidel): Remove g_current_input_event.
// This only exists to allow ChromeClient::show() to know which mouse button
// triggered a window.open event.
// Safari must perform a similar hack, ours is in our WebKit glue layer
// theirs is in the application. This should go when WebCore can be fixed
// to pass more event information to ChromeClient::show()
g_current_input_event = input_event;
bool handled = true;
// TODO(jcampan): WebKit seems to always return false on mouse events
// processing methods. For now we'll assume it has processed them (as we are
// only interested in whether keyboard events are processed).
switch (input_event->type) {
case WebInputEvent::MOUSE_MOVE:
MouseMove(*static_cast<const WebMouseEvent*>(input_event));
break;
case WebInputEvent::MOUSE_LEAVE:
MouseLeave(*static_cast<const WebMouseEvent*>(input_event));
break;
case WebInputEvent::MOUSE_WHEEL:
MouseWheel(*static_cast<const WebMouseWheelEvent*>(input_event));
break;
case WebInputEvent::MOUSE_DOWN:
case WebInputEvent::MOUSE_DOUBLE_CLICK:
MouseDown(*static_cast<const WebMouseEvent*>(input_event));
break;
case WebInputEvent::MOUSE_UP:
MouseUp(*static_cast<const WebMouseEvent*>(input_event));
break;
case WebInputEvent::KEY_DOWN:
case WebInputEvent::KEY_UP:
handled = KeyEvent(*static_cast<const WebKeyboardEvent*>(input_event));
break;
case WebInputEvent::CHAR:
handled = CharEvent(*static_cast<const WebKeyboardEvent*>(input_event));
break;
default:
handled = false;
}
g_current_input_event = NULL;
return handled;
}
void WebViewImpl::MouseCaptureLost() {
}
// TODO(darin): these navigation methods should be killed
void WebViewImpl::StopLoading() {
main_frame_->StopLoading();
}
void WebViewImpl::SetBackForwardListSize(int size) {
page_->backForwardList()->setCapacity(size);
}
void WebViewImpl::SetFocus(bool enable) {
if (enable) {
// Getting the focused frame will have the side-effect of setting the main
// frame as the focused frame if it is not already focused. Otherwise, if
// there is already a focused frame, then this does nothing.
GetFocusedFrame();
if (main_frame_ && main_frame_->frame()) {
Frame* frame = main_frame_->frame();
if (!frame->selectionController()->isFocusedAndActive()) {
// No one has focus yet, try to restore focus.
RestoreFocus();
frame->page()->focusController()->setActive(true);
}
Frame* focused_frame =
frame->page()->focusController()->focusedOrMainFrame();
frame->selectionController()->setFocused(frame == focused_frame);
}
ime_accept_events_ = true;
} else {
// Clear out who last had focus. If someone has focus, the refs will be
// updated below.
ReleaseFocusReferences();
// Clear focus on the currently focused frame if any.
if (!main_frame_)
return;
Frame* frame = main_frame_->frame();
if (!frame)
return;
RefPtr<Frame> focused = frame->page()->focusController()->focusedFrame();
if (focused.get()) {
// Update the focus refs, this way we can give focus back appropriately.
// It's entirely possible to have a focused document, but not a focused
// node.
RefPtr<Document> document = focused->document();
last_focused_frame_ = focused;
if (document.get()) {
RefPtr<Node> focused_node = document->focusedNode();
if (focused_node.get()) {
// To workaround bug #792423, we do not blur the focused node. This
// should be reenabled when we merge a WebKit that has the fix for
// http://bugs.webkit.org/show_bug.cgi?id=16928.
// last_focused_node_ = focused_node;
// document->setFocusedNode(NULL);
}
}
frame->page()->focusController()->setFocusedFrame(0);
// Finish an ongoing composition to delete the composition node.
Editor* editor = focused->editor();
if (editor && editor->hasComposition())
editor->confirmComposition();
ime_accept_events_ = false;
}
// Make sure the main frame doesn't think it has focus.
if (frame != focused.get())
frame->selectionController()->setFocused(false);
}
}
// TODO(jcampan): http://b/issue?id=1157486 this is needed to work-around
// issues caused by the fix for bug #792423 and should be removed when that
// bug is fixed.
void WebViewImpl::StoreFocusForFrame(WebFrame* frame) {
DCHECK(frame);
// We only want to store focus info if we are the focused frame and if we have
// not stored it already.
WebCore::Frame* webcore_frame = static_cast<WebFrameImpl*>(frame)->frame();
if (last_focused_frame_.get() != webcore_frame || last_focused_node_.get())
return;
// Clear out who last had focus. If someone has focus, the refs will be
// updated below.
ReleaseFocusReferences();
last_focused_frame_ = webcore_frame;
RefPtr<Document> document = last_focused_frame_->document();
if (document.get()) {
RefPtr<Node> focused_node = document->focusedNode();
if (focused_node.get()) {
last_focused_node_ = focused_node;
document->setFocusedNode(NULL);
}
}
}
void WebViewImpl::ImeSetComposition(int string_type, int cursor_position,
int target_start, int target_end,
int string_length,
const wchar_t *string_data) {
Frame* focused = GetFocusedWebCoreFrame();
if (!focused || !ime_accept_events_) {
return;
}
Editor* editor = focused->editor();
if (!editor)
return;
if (!editor->canEdit()) {
// The input focus has been moved to another WebWidget object.
// We should use this |editor| object only to complete the ongoing
// composition.
if (!editor->hasComposition())
return;
}
if (string_type == 0) {
// A browser process sent an IPC message which does not contain a valid
// string, which means an ongoing composition has been canceled.
// If the ongoing composition has been canceled, replace the ongoing
// composition string with an empty string and complete it.
// TODO(hbono): Need to add a new function to cancel the ongoing
// composition to WebCore::Editor?
WebCore::String empty_string;
editor->confirmComposition(empty_string);
} else {
// A browser process sent an IPC message which contains a string to be
// displayed in this Editor object.
// To display the given string, set the given string to the
// m_compositionNode member of this Editor object and display it.
// NOTE: An empty string (often sent by Chinese IMEs and Korean IMEs)
// causes a panic in Editor::setComposition(), which deactivates the
// m_frame.m_sel member of this Editor object, i.e. we can never display
// composition strings in the m_compositionNode member.
// (I have not been able to find good methods for re-activating it.)
// Therefore, I have to prevent from calling Editor::setComposition()
// with its first argument an empty string.
if (string_length > 0) {
if (target_start < 0) target_start = 0;
if (target_end < 0) target_end = string_length;
WebCore::String composition_string(string_data, string_length);
// Create custom underlines.
// To emphasize the selection, the selected region uses a solid black
// for its underline while other regions uses a pale gray for theirs.
WTF::Vector<WebCore::CompositionUnderline> underlines(3);
underlines[0].startOffset = 0;
underlines[0].endOffset = target_start;
underlines[0].thick = true;
underlines[0].color.setRGB(0xd3, 0xd3, 0xd3);
underlines[1].startOffset = target_start;
underlines[1].endOffset = target_end;
underlines[1].thick = true;
underlines[1].color.setRGB(0x00, 0x00, 0x00);
underlines[2].startOffset = target_end;
underlines[2].endOffset = string_length;
underlines[2].thick = true;
underlines[2].color.setRGB(0xd3, 0xd3, 0xd3);
// When we use custom underlines, WebKit ("InlineTextBox.cpp" Line 282)
// prevents from writing a text in between 'selectionStart' and
// 'selectionEnd' somehow.
// Therefore, we use the 'cursor_position' for these arguments so that
// there are not any characters in the above region.
editor->setComposition(composition_string, underlines,
cursor_position, cursor_position);
}
// The given string is a result string, which means the ongoing
// composition has been completed. I have to call the
// Editor::confirmCompletion() and complete this composition.
if (string_type == GCS_RESULTSTR) {
editor->confirmComposition();
}
}
}
bool WebViewImpl::ImeUpdateStatus(bool* enable_ime, const void **id,
int* x, int* y) {
// Initialize the return values so that we can disable the IME attached
// to a browser process when an error occurs while retrieving information
// of the focused edit control.
*enable_ime = false;
*id = NULL;
*x = -1;
*y = -1;
// Store the position of the bottom-left corner of the caret.
// This process consists of the following four steps:
// 1. Retrieve the selection controller of the focused frame;
// 2. Retrieve the caret rectangle from the controller;
// 3. Convert the rectangle, which is relative to the parent view, to the
// one relative to the client window, and;
// 4. Store the position of its bottom-left corner.
const Frame* focused = GetFocusedWebCoreFrame();
if (!focused)
return false;
const Editor* editor = focused->editor();
if (!editor || !editor->canEdit())
return false;
const SelectionController* controller = focused->selectionController();
if (!controller)
return false;
const Node* node = controller->start().node();
if (!node)
return false;
const FrameView* view = node->document()->view();
if (!view)
return false;
IntRect rect = view->contentsToWindow(controller->caretRect());
*x = rect.x();
*y = rect.bottom();
return true;
}
void WebViewImpl::RestoreFocus() {
if (last_focused_frame_.get()) {
if (last_focused_frame_->page()) {
// last_focused_frame_ can be detached from the frame tree, thus,
// its page can be null.
last_focused_frame_->page()->focusController()->setFocusedFrame(
last_focused_frame_.get());
}
if (last_focused_node_.get()) {
// last_focused_node_ may be null, make sure it's valid before trying to
// focus it.
static_cast<Element*>(last_focused_node_.get())->focus();
}
// And clear out the refs.
ReleaseFocusReferences();
}
}
void WebViewImpl::SetInitialFocus(bool reverse) {
if (page_.get()) {
// So RestoreFocus does not focus anything when it is called.
ReleaseFocusReferences();
// Since we don't have a keyboard event, we'll create one.
WebKeyboardEvent keyboard_event;
keyboard_event.type = WebInputEvent::KEY_DOWN;
if (reverse)
keyboard_event.modifiers = WebInputEvent::SHIFT_KEY;
keyboard_event.key_code = VK_TAB;
keyboard_event.key_data = L'\t';
MakePlatformKeyboardEvent platform_event(keyboard_event);
// We have to set the key type explicitly to avoid an assert in the
// KeyboardEvent constructor.
platform_event.SetKeyType(PlatformKeyboardEvent::RawKeyDown);
KeyboardEvent webkit_event(platform_event, NULL);
page()->focusController()->setInitialFocus(
reverse ? WebCore::FocusDirectionBackward :
WebCore::FocusDirectionForward,
&webkit_event);
}
}
bool WebViewImpl::FocusedFrameNeedsSpellchecking() {
const WebCore::Frame* frame = GetFocusedWebCoreFrame();
if (!frame)
return false;
const WebCore::Document* document = frame->document();
if (!document)
return false;
const WebCore::Node* node = document->focusedNode();
if (!node)
return false;
const WebCore::RenderObject* renderer = node->renderer();
if (!renderer)
return false;
// We should also retrieve the contenteditable attribute of this element to
// determine if this element needs spell-checking.
const WebCore::EUserModify user_modify = renderer->style()->userModify();
return renderer->isTextArea() ||
user_modify == WebCore::READ_WRITE ||
user_modify == WebCore::READ_WRITE_PLAINTEXT_ONLY;
}
// Releases references used to restore focus.
void WebViewImpl::ReleaseFocusReferences() {
if (last_focused_frame_.get()) {
last_focused_frame_.release();
last_focused_node_.release();
}
}
bool WebViewImpl::DownloadImage(int id, const GURL& image_url, int image_size) {
if (!main_frame_ || !main_frame_->frame())
return false;
image_fetchers_.insert(
new ImageResourceFetcher(this, id, image_url, image_size));
return true;
}
void WebViewImpl::SetPreferences(const WebPreferences& preferences) {
if (!page_.get())
return;
// Keep a local copy of the preferences struct for GetPreferences.
webprefs_ = preferences;
Settings* settings = page_->settings();
settings->setStandardFontFamily(webkit_glue::StdWStringToString(
preferences.standard_font_family));
settings->setFixedFontFamily(webkit_glue::StdWStringToString(
preferences.fixed_font_family));
settings->setSerifFontFamily(webkit_glue::StdWStringToString(
preferences.serif_font_family));
settings->setSansSerifFontFamily(webkit_glue::StdWStringToString(
preferences.sans_serif_font_family));
settings->setCursiveFontFamily(webkit_glue::StdWStringToString(
preferences.cursive_font_family));
settings->setFantasyFontFamily(webkit_glue::StdWStringToString(
preferences.fantasy_font_family));
settings->setDefaultFontSize(preferences.default_font_size);
settings->setDefaultFixedFontSize(preferences.default_fixed_font_size);
settings->setMinimumFontSize(preferences.minimum_font_size);
settings->setMinimumLogicalFontSize(preferences.minimum_logical_font_size);
settings->setDefaultTextEncodingName(webkit_glue::StdWStringToString(
preferences.default_encoding));
settings->setJavaScriptEnabled(preferences.javascript_enabled);
settings->setJavaScriptCanOpenWindowsAutomatically(
preferences.javascript_can_open_windows_automatically);
settings->setLoadsImagesAutomatically(
preferences.loads_images_automatically);
settings->setPluginsEnabled(preferences.plugins_enabled);
settings->setDOMPasteAllowed(preferences.dom_paste_enabled);
settings->setDeveloperExtrasEnabled(preferences.developer_extras_enabled);
settings->setShrinksStandaloneImagesToFit(
preferences.shrinks_standalone_images_to_fit);
settings->setUsesUniversalDetector(preferences.uses_universal_detector);
settings->setTextAreasAreResizable(preferences.text_areas_are_resizable);
if (preferences.user_style_sheet_enabled) {
settings->setUserStyleSheetLocation(webkit_glue::GURLToKURL(
preferences.user_style_sheet_location));
} else {
settings->setUserStyleSheetLocation(KURL());
}
// This setting affects the behavior of links in an editable region:
// clicking the link should select it rather than navigate to it.
// Safari uses the same default. It is unlikley an embedder would want to
// change this, since it would break existing rich text editors.
settings->setEditableLinkBehavior(WebCore::EditableLinkNeverLive);
settings->setUsesDashboardBackwardCompatibilityMode(
preferences.dashboard_compatibility_mode);
settings->setFontRenderingMode(NormalRenderingMode);
settings->setJavaEnabled(preferences.java_enabled);
// RenderTheme is a singleton that needs to know the default font size to
// draw some form controls. We let it know each time the size changes.
WebCore::RenderThemeWin::setDefaultFontSize(preferences.default_font_size);
// Used to make sure if the frameview needs layout, layout is triggered
// during Document::updateLayout(). TODO(tc): See bug 1199269 for more
// details.
FrameView* frameview = main_frame()->frameview();
if (frameview && frameview->needsLayout())
frameview->setNeedsLayout();
}
const WebPreferences& WebViewImpl::GetPreferences() {
return webprefs_;
}
// Set the encoding of the current main frame to the one selected by
// a user in the encoding menu.
void WebViewImpl::SetPageEncoding(const std::string& encoding_name) {
if (!main_frame_)
return;
if (!encoding_name.empty()) {
// only change override encoding, don't change default encoding
String new_encoding_name(encoding_name.data());
main_frame_->frame()->loader()->reloadAllowingStaleData(new_encoding_name);
}
}
// Return the canonical encoding name of current main webframe in webview.
std::string WebViewImpl::GetMainFrameEncodingName() {
if (!main_frame_)
return std::string();
String encoding_name = main_frame_->frame()->loader()->encoding();
return WideToUTF8(webkit_glue::StringToStdWString(encoding_name));
}
void WebViewImpl::MakeTextLarger() {
Frame* frame = main_frame()->frame();
double multiplier = std::min(std::pow(kTextSizeMultiplierRatio,
text_zoom_level_ + 1),
kMaxTextSizeMultiplier);
int zoom_factor = static_cast<int>(100.0 * multiplier);
if (zoom_factor != frame->zoomFactor()) {
++text_zoom_level_;
frame->setZoomFactor(zoom_factor);
}
}
void WebViewImpl::MakeTextSmaller() {
Frame* frame = main_frame()->frame();
double multiplier = std::max(std::pow(kTextSizeMultiplierRatio,
text_zoom_level_ - 1),
kMinTextSizeMultiplier);
int zoom_factor = static_cast<int>(100.0 * multiplier);
if (zoom_factor != frame->zoomFactor()) {
--text_zoom_level_;
frame->setZoomFactor(zoom_factor);
}
}
void WebViewImpl::MakeTextStandardSize() {
text_zoom_level_ = 0;
main_frame()->frame()->setZoomFactor(100);
}
void WebViewImpl::CopyImageAt(int x, int y) {
IntPoint point = IntPoint(x, y);
Frame* frame = main_frame_->frame();
if (!frame)
return;
HitTestResult result =
frame->eventHandler()->hitTestResultAtPoint(point, false);
if (result.absoluteImageURL().isEmpty()) {
// There isn't actually an image at these coordinates. Might be because
// the window scrolled while the context menu was open or because the page
// changed itself between when we thought there was an image here and when
// we actually tried to retreive the image.
//
// TODO: implement a cache of the most recent HitTestResult to avoid having
// to do two hit tests.
return;
}
frame->editor()->copyImage(result);
}
void WebViewImpl::InspectElement(int x, int y) {
if (x == -1 || y == -1) {
page_->inspectorController()->inspect(NULL);
} else {
IntPoint point = IntPoint(x, y);
HitTestResult result(point);
if (Frame* frame = main_frame_->frame())
result = frame->eventHandler()->hitTestResultAtPoint(point, false);
if (!result.innerNonSharedNode())
return;
page_->inspectorController()->inspect(result.innerNonSharedNode());
}
}
void WebViewImpl::ShowJavaScriptConsole() {
page_->inspectorController()->showConsole();
}
void WebViewImpl::DragSourceEndedAt(
int client_x, int client_y, int screen_x, int screen_y) {
PlatformMouseEvent pme(IntPoint(client_x, client_y),
IntPoint(screen_x, screen_y),
NoButton, MouseEventMoved, 0, false, false, false,
false, 0);
main_frame_->frame()->eventHandler()->dragSourceEndedAt(pme,
DragOperationCopy);
}
void WebViewImpl::DragSourceMovedTo(
int client_x, int client_y, int screen_x, int screen_y) {
PlatformMouseEvent pme(IntPoint(client_x, client_y),
IntPoint(screen_x, screen_y),
LeftButton, MouseEventMoved, 0, false, false, false,
false, 0);
main_frame_->frame()->eventHandler()->dragSourceMovedTo(pme);
}
void WebViewImpl::DragSourceSystemDragEnded() {
page_->dragController()->dragEnded();
DCHECK(doing_drag_and_drop_);
doing_drag_and_drop_ = false;
}
bool WebViewImpl::DragTargetDragEnter(const WebDropData& drop_data,
int client_x, int client_y, int screen_x, int screen_y) {
DCHECK(!current_drop_data_.get());
// Copy drop_data into current_drop_data_.
WebDropData* drop_data_copy = new WebDropData;
*drop_data_copy = drop_data;
current_drop_data_.reset(drop_data_copy);
DragData drag_data(reinterpret_cast<DragDataRef>(current_drop_data_.get()),
IntPoint(client_x, client_y), IntPoint(screen_x, screen_y),
kDropTargetOperation);
DragOperation effect = page_->dragController()->dragEntered(&drag_data);
return effect != DragOperationNone;
}
bool WebViewImpl::DragTargetDragOver(
int client_x, int client_y, int screen_x, int screen_y) {
DCHECK(current_drop_data_.get());
DragData drag_data(reinterpret_cast<DragDataRef>(current_drop_data_.get()),
IntPoint(client_x, client_y), IntPoint(screen_x, screen_y),
kDropTargetOperation);
DragOperation effect = page_->dragController()->dragUpdated(&drag_data);
return effect != DragOperationNone;
}
void WebViewImpl::DragTargetDragLeave() {
DCHECK(current_drop_data_.get());
DragData drag_data(reinterpret_cast<DragDataRef>(current_drop_data_.get()),
IntPoint(), IntPoint(), DragOperationNone);
page_->dragController()->dragExited(&drag_data);
current_drop_data_.reset(NULL);
}
void WebViewImpl::DragTargetDrop(
int client_x, int client_y, int screen_x, int screen_y) {
DCHECK(current_drop_data_.get());
DragData drag_data(reinterpret_cast<DragDataRef>(current_drop_data_.get()),
IntPoint(client_x, client_y), IntPoint(screen_x, screen_y),
kDropTargetOperation);
page_->dragController()->performDrag(&drag_data);
current_drop_data_.reset(NULL);
}
SearchableFormData* WebViewImpl::CreateSearchableFormDataForFocusedNode() {
if (!main_frame_)
return NULL;
Frame* frame = main_frame_->frame();
if (!frame)
return NULL;
if (RefPtr<Frame> focused =
frame->page()->focusController()->focusedFrame()) {
RefPtr<Document> document = focused->document();
if (document.get()) {
RefPtr<Node> focused_node = document->focusedNode();
if (focused_node.get() &&
focused_node->nodeType() == Node::ELEMENT_NODE) {
return SearchableFormData::Create(
static_cast<Element*>(focused_node.get()));
}
}
}
return NULL;
}
void WebViewImpl::DidCommitLoad(bool* is_new_navigation) {
if (is_new_navigation)
*is_new_navigation = observed_new_navigation_;
#ifndef NDEBUG
DCHECK(!observed_new_navigation_ ||
main_frame_->frame()->loader()->documentLoader() == new_navigation_loader_);
new_navigation_loader_ = NULL;
#endif
observed_new_navigation_ = false;
}
void WebViewImpl::StartDragging(const WebDropData& drop_data) {
if (delegate_) {
DCHECK(!doing_drag_and_drop_);
doing_drag_and_drop_ = true;
delegate_->StartDragging(this, drop_data);
}
}
const WebCore::Node* WebViewImpl::getInspectedNode(WebCore::Frame* frame) {
DCHECK(frame);
WebFrameImpl* webframe_impl = WebFrameImpl::FromFrame(frame);
if (!webframe_impl)
return NULL;
return webframe_impl->inspected_node();
}
void WebViewImpl::ImageResourceDownloadDone(ImageResourceFetcher* fetcher,
bool errored,
const SkBitmap& image) {
if (delegate_) {
delegate_->DidDownloadImage(fetcher->id(), fetcher->image_url(), errored,
image);
}
DeleteImageResourceFetcher(fetcher);
}
//-----------------------------------------------------------------------------
// WebCore::WidgetClientWin
HWND WebViewImpl::containingWindow() {
return delegate_ ? delegate_->GetContainingWindow(this) : NULL;
}
void WebViewImpl::invalidateRect(const IntRect& damaged_rect) {
if (delegate_)
delegate_->DidInvalidateRect(this, gfx::Rect(damaged_rect.x(),
damaged_rect.y(),
damaged_rect.width(),
damaged_rect.height()));
}
void WebViewImpl::scrollRect(int dx, int dy, const IntRect& clip_rect) {
if (delegate_)
delegate_->DidScrollRect(this, dx, dy, gfx::Rect(clip_rect.x(),
clip_rect.y(),
clip_rect.width(),
clip_rect.height()));
}
void WebViewImpl::popupOpened(WebCore::Widget* widget,
const WebCore::IntRect& bounds) {
if (!delegate_)
return;
WebWidgetImpl* webwidget =
static_cast<WebWidgetImpl*>(delegate_->CreatePopupWidget(this));
webwidget->Init(widget, gfx::Rect(bounds.x(), bounds.y(),
bounds.width(), bounds.height()));
}
void WebViewImpl::popupClosed(WebCore::Widget* widget) {
NOTREACHED() << "popupClosed called on a non-popup";
}
void WebViewImpl::setCursor(const WebCore::Cursor& cursor) {
if (delegate_)
delegate_->SetCursor(this, cursor.impl());
}
void WebViewImpl::setFocus() {
if (delegate_)
delegate_->Focus(this);
}
const SkBitmap* WebViewImpl::getPreloadedResourceBitmap(int resource_id) {
if (!delegate_)
return NULL;
return delegate_->GetPreloadedResourceBitmap(resource_id);
}
void WebViewImpl::onScrollPositionChanged(WebCore::Widget* widget) {
// Scroll position changes should be reflected in the session history.
if (delegate_)
delegate_->OnNavStateChanged(this);
}
const WTF::Vector<RefPtr<WebCore::Range> >* WebViewImpl::getTickmarks(
WebCore::Frame* frame) {
DCHECK(frame);
WebFrameImpl* webframe_impl = WebFrameImpl::FromFrame(frame);
if (!webframe_impl)
return NULL;
return &webframe_impl->tickmarks();
}
size_t WebViewImpl::getActiveTickmarkIndex(WebCore::Frame* frame) {
DCHECK(frame);
WebFrameImpl* webframe_impl = WebFrameImpl::FromFrame(frame);
if (!webframe_impl)
return kNoTickmark;
// The mainframe can tell us if we are the frame with the active tick-mark.
if (webframe_impl != main_frame_->active_tickmark_frame())
return kNoTickmark;
return webframe_impl->active_tickmark_index();
}
//-----------------------------------------------------------------------------
// WebCore::BackForwardListClient
void WebViewImpl::didAddHistoryItem(WebCore::HistoryItem* item) {
// If WebCore adds a new HistoryItem, it means this is a new navigation
// (ie, not a reload or back/forward).
observed_new_navigation_ = true;
#ifndef NDEBUG
new_navigation_loader_ = main_frame_->frame()->loader()->documentLoader();
#endif
}
void WebViewImpl::willGoToHistoryItem(WebCore::HistoryItem* item) {
if (pending_history_item_) {
if (item == pending_history_item_->GetHistoryItem()) {
// Let the main frame know this HistoryItem is loading, so it can cache
// any ExtraData when the DataSource is created.
main_frame_->set_currently_loading_history_item(pending_history_item_);
pending_history_item_ = 0;
}
}
}
WebCore::HistoryItem* WebViewImpl::itemAtIndex(int index) {
if (!delegate_)
return NULL;
WebHistoryItem* item = delegate_->GetHistoryEntryAtOffset(index);
if (!item)
return NULL;
// If someone has asked for a history item, we probably want to navigate to
// it soon. Keep track of it until willGoToHistoryItem is called.
pending_history_item_ = static_cast<WebHistoryItemImpl*>(item);
return pending_history_item_->GetHistoryItem();
}
void WebViewImpl::goToItemAtIndexAsync(int index) {
if (delegate_)
delegate_->GoToEntryAtOffsetAsync(index);
}
int WebViewImpl::backListCount() {
if (!delegate_)
return 0;
return delegate_->GetHistoryBackListCount();
}
int WebViewImpl::forwardListCount() {
if (!delegate_)
return 0;
return delegate_->GetHistoryForwardListCount();
}
void WebViewImpl::DeleteImageResourceFetcher(ImageResourceFetcher* fetcher) {
DCHECK(image_fetchers_.find(fetcher) != image_fetchers_.end());
image_fetchers_.erase(fetcher);
// We're in the callback from the ImageResourceFetcher, best to delay
// deletion.
MessageLoop::current()->DeleteSoon(FROM_HERE, fetcher);
}