Move Sad Tab implementation out of the TabContentsViews.

chrome/browser/tab_contents/tab_contents_view_gtk.h

 // Copyright (c) 2011 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_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_
 #pragma once
 
 #include <gtk/gtk.h>
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/tab_contents/render_view_host_delegate_helper.h"
 #include "chrome/browser/ui/gtk/focus_store_gtk.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "ui/base/gtk/gtk_signal.h"
 #include "ui/base/gtk/owned_widget_gtk.h"
 
 class ConstrainedWindowGtk;
 class RenderViewContextMenuGtk;
-class SadTabGtk;
 class WebDragBookmarkHandlerGtk;
 
 namespace content {
 class WebDragDestGtk;
 class WebDragSourceGtk;
 }
 
-class TabContentsViewGtk : public TabContentsView,
-                           public content::NotificationObserver {
+class TabContentsViewGtk : public TabContentsView {
  public:
   // The corresponding TabContents 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.
   explicit TabContentsViewGtk(TabContents* tab_contents);
   virtual ~TabContentsViewGtk();
 
   // Unlike Windows, ConstrainedWindows need to collaborate with the
   // TabContentsViewGtk to position the dialogs.
   void AttachConstrainedWindow(ConstrainedWindowGtk* constrained_window);
@@ skipping 20 matching lines @@
   virtual void RenderViewCreated(RenderViewHost* host) OVERRIDE;
   virtual void Focus() OVERRIDE;
   virtual void SetInitialFocus() OVERRIDE;
   virtual void StoreFocus() OVERRIDE;
   virtual void RestoreFocus() OVERRIDE;
   virtual bool IsDoingDrag() const OVERRIDE;
   virtual void CancelDragAndCloseTab() OVERRIDE;
   virtual bool IsEventTracking() const OVERRIDE;
   virtual void CloseTabAfterEventTracking() OVERRIDE;
   virtual void GetViewBounds(gfx::Rect* out) const OVERRIDE;
+  virtual void InstallOverlayView(gfx::NativeView view) OVERRIDE;
+  virtual void RemoveOverlayView() OVERRIDE;
 
   // Backend implementation of RenderViewHostDelegate::View.
   virtual void CreateNewWindow(
       int route_id,
       const ViewHostMsg_CreateWindow_Params& params);
   virtual void CreateNewWidget(int route_id, WebKit::WebPopupType popup_type);
   virtual void CreateNewFullscreenWidget(int route_id);
   virtual void ShowCreatedWindow(int route_id,
                                  WindowOpenDisposition disposition,
                                  const gfx::Rect& initial_pos,
                                  bool user_gesture);
   virtual void ShowCreatedWidget(int route_id, const gfx::Rect& initial_pos);
   virtual void ShowCreatedFullscreenWidget(int route_id);
   virtual void ShowContextMenu(const ContextMenuParams& params);
   virtual void ShowPopupMenu(const gfx::Rect& bounds,
                              int item_height,
                              double item_font_size,
                              int selected_item,
                              const std::vector<WebMenuItem>& items,
                              bool right_aligned);
   virtual void StartDragging(const WebDropData& drop_data,
                              WebKit::WebDragOperationsMask allowed_ops,
                              const SkBitmap& image,
                              const gfx::Point& image_offset);
   virtual void UpdateDragCursor(WebKit::WebDragOperation operation);
   virtual void GotFocus();
   virtual void TakeFocus(bool reverse);
 
-  // content::NotificationObserver implementation ------------------------------
-
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details);
-
  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);
 
   void CancelDragIfAny();
 
   // Handle focus traversal on the render widget native view.
@@ skipping 11 matching lines @@
 
   CHROMEGTK_CALLBACK_1(TabContentsViewGtk, void, OnSetFloatingPosition,
                        GtkAllocation*);
 
   // The TabContents whose contents we display.
   TabContents* tab_contents_;
 
   // Common implementations of some RenderViewHostDelegate::View methods.
   RenderViewHostDelegateViewHelper delegate_view_helper_;
 
-
   // Contains |expanded_| as its GtkBin member.
   ui::OwnedWidgetGtk floating_;
 
   // This container holds the tab's web page views. It is a GtkExpandedContainer
   // so that we can control the size of the web pages.
   GtkWidget* expanded_;
 
   // The context menu is reset every time we show it, but we keep a pointer to
   // between uses so that it won't go out of scope before we're done with it.
   scoped_ptr<RenderViewContextMenuGtk> context_menu_;
 
-  // Used to get notifications about renderers coming and going.
-  content::NotificationRegistrar registrar_;
-
-  scoped_ptr<SadTabGtk> sad_tab_;
-
   FocusStoreGtk focus_store_;
 
   // The UI for the constrained dialog currently displayed. This is owned by
   // TabContents, not the view.
   ConstrainedWindowGtk* constrained_window_;
 
   // The helper object that handles drag destination related interactions with
   // GTK.
   scoped_ptr<content::WebDragDestGtk> drag_dest_;
 
   // The chrome specific delegate that receives events from WebDragDestGtk.
   scoped_ptr<WebDragBookmarkHandlerGtk> bookmark_handler_gtk_;
 
   // Object responsible for handling drags from the page for us.
   scoped_ptr<content::WebDragSourceGtk> drag_source_;
 
   // The size we want the tab contents view to be.  We keep this in a separate
   // variable because resizing in GTK+ is async.
   gfx::Size requested_size_;
 
+  // The overlaid view. Owned by the caller of |InstallOverlayView|; this is a
+  // weak reference.
+  GtkWidget* overlaid_view_;
+
   DISALLOW_COPY_AND_ASSIGN(TabContentsViewGtk);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_VIEW_GTK_H_