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// Copyright (c) 2012 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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_GTK_H_
#define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_GTK_H_
#include <gtk/gtk.h>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "content/common/content_export.h"
#include "content/common/drag_event_source_info.h"
#include "content/port/browser/render_view_host_delegate_view.h"
#include "content/port/browser/web_contents_view_port.h"
#include "ui/base/gtk/focus_store_gtk.h"
#include "ui/base/gtk/gtk_signal.h"
#include "ui/base/gtk/owned_widget_gtk.h"
namespace content {
class WebContents;
class WebContentsImpl;
class WebContentsViewDelegate;
class WebDragDestDelegate;
class WebDragDestGtk;
class WebDragSourceGtk;
class CONTENT_EXPORT WebContentsViewGtk
: public WebContentsViewPort,
public RenderViewHostDelegateView {
public:
// The corresponding WebContentsImpl is passed in the constructor, and manages
// our lifetime. This doesn't need to be the case, but is this way currently
// because that's what was easiest when they were split. We optionally take
// |wrapper| which creates an intermediary widget layer for features from the
// Embedding layer that lives with the WebContentsView.
WebContentsViewGtk(WebContentsImpl* web_contents,
WebContentsViewDelegate* delegate);
virtual ~WebContentsViewGtk();
WebContentsViewDelegate* delegate() const { return delegate_.get(); }
WebContents* web_contents();
// WebContentsView implementation --------------------------------------------
virtual gfx::NativeView GetNativeView() const OVERRIDE;
virtual gfx::NativeView GetContentNativeView() const OVERRIDE;
virtual gfx::NativeWindow GetTopLevelNativeWindow() const OVERRIDE;
virtual void GetContainerBounds(gfx::Rect* out) const OVERRIDE;
virtual void OnTabCrashed(base::TerminationStatus status,
int error_code) OVERRIDE;
virtual void SizeContents(const gfx::Size& size) OVERRIDE;
virtual void Focus() OVERRIDE;
virtual void SetInitialFocus() OVERRIDE;
virtual void StoreFocus() OVERRIDE;
virtual void RestoreFocus() OVERRIDE;
virtual DropData* GetDropData() const OVERRIDE;
virtual gfx::Rect GetViewBounds() const OVERRIDE;
// WebContentsViewPort implementation ----------------------------------------
virtual void CreateView(
const gfx::Size& initial_size, gfx::NativeView context) OVERRIDE;
virtual RenderWidgetHostView* CreateViewForWidget(
RenderWidgetHost* render_widget_host) OVERRIDE;
virtual RenderWidgetHostView* CreateViewForPopupWidget(
RenderWidgetHost* render_widget_host) OVERRIDE;
virtual void SetPageTitle(const base::string16& title) OVERRIDE;
virtual void RenderViewCreated(RenderViewHost* host) OVERRIDE;
virtual void RenderViewSwappedIn(RenderViewHost* host) OVERRIDE;
virtual void SetOverscrollControllerEnabled(bool enabled) OVERRIDE;
// Backend implementation of RenderViewHostDelegateView.
virtual void ShowContextMenu(RenderFrameHost* render_frame_host,
const ContextMenuParams& params) OVERRIDE;
virtual void ShowPopupMenu(const gfx::Rect& bounds,
int item_height,
double item_font_size,
int selected_item,
const std::vector<MenuItem>& items,
bool right_aligned,
bool allow_multiple_selection) OVERRIDE;
virtual void StartDragging(const DropData& drop_data,
blink::WebDragOperationsMask allowed_ops,
const gfx::ImageSkia& image,
const gfx::Vector2d& image_offset,
const DragEventSourceInfo& event_info) OVERRIDE;
virtual void UpdateDragCursor(blink::WebDragOperation operation) OVERRIDE;
virtual void GotFocus() OVERRIDE;
virtual void TakeFocus(bool reverse) OVERRIDE;
private:
// Insert the given widget into the content area. Should only be used for
// web pages and the like (including interstitials and sad tab). Note that
// this will be perfectly happy to insert overlapping render views, so care
// should be taken that the correct one is hidden/shown.
void InsertIntoContentArea(GtkWidget* widget);
// Replaces, or updates, the existing WebDragDestGtk with one for |new_host|.
// This must be called when swapping in, or creating a swapped in, RVH.
void UpdateDragDest(RenderViewHost* new_host);
// Handle focus traversal on the render widget native view. Can be overridden
// by subclasses.
CHROMEGTK_CALLBACK_1(WebContentsViewGtk, gboolean, OnFocus, GtkDirectionType);
// Used to adjust the size of its children when the size of |expanded_| is
// changed.
CHROMEGTK_CALLBACK_2(WebContentsViewGtk, void, OnChildSizeRequest,
GtkWidget*, GtkRequisition*);
// Used to propagate the size change of |expanded_| to our RWHV to resize the
// renderer content.
CHROMEGTK_CALLBACK_1(WebContentsViewGtk, void, OnSizeAllocate,
GtkAllocation*);
// The WebContentsImpl whose contents we display.
WebContentsImpl* web_contents_;
// This container holds the tab's web page views. It is a GtkExpandedContainer
// so that we can control the size of the web pages.
ui::OwnedWidgetGtk expanded_;
ui::FocusStoreGtk focus_store_;
// The helper object that handles drag destination related interactions with
// GTK.
scoped_ptr<WebDragDestGtk> drag_dest_;
// Object responsible for handling drags from the page for us.
scoped_ptr<WebDragSourceGtk> drag_source_;
// Our optional views wrapper. If non-NULL, we return this widget as our
// GetNativeView() and insert |expanded_| as its child in the GtkWidget
// hierarchy.
scoped_ptr<WebContentsViewDelegate> delegate_;
// The size we want the view to be. We keep this in a separate variable
// because resizing in GTK+ is async.
gfx::Size requested_size_;
DISALLOW_COPY_AND_ASSIGN(WebContentsViewGtk);
};
} // namespace content
#endif // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_VIEW_GTK_H_
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