Allow dynamic switching in and out of sidetabs mode.

chrome/browser/views/tabs/browser_tab_strip_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
 #define CHROME_BROWSER_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
 
+#include "base/scoped_ptr.h"
+
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/views/tabs/side_tab_strip_model.h"
 
 class SideTabStrip;
 
 // An implementation of SideTabStripModel that sources data from
 // the TabContentses in a TabStripModel.
 class BrowserTabStripController : public SideTabStripModel,
                                   public TabStripModelObserver {
  public:
   BrowserTabStripController(TabStripModel* model, SideTabStrip* tabstrip);
   virtual ~BrowserTabStripController();
 
+  void InitFromModel();
+
+  bool IsCommandEnabledForTab(TabStripModel::ContextMenuCommand command_id,
+                              int tab_index) const;
+  bool IsCommandCheckedForTab(TabStripModel::ContextMenuCommand command_id,
+                              int tab_index) const;
+  void ExecuteCommandForTab(TabStripModel::ContextMenuCommand command_id,
+                            int tab_index);
+
   // SideTabStripModel implementation:
   virtual SkBitmap GetIcon(int index) const;
   virtual string16 GetTitle(int index) const;
   virtual bool IsSelected(int index) const;
   virtual NetworkState GetNetworkState(int index) const;
   virtual void SelectTab(int index);
   virtual void CloseTab(int index);
+  virtual void ShowContextMenu(int index, const gfx::Point& p);
 
   // TabStripModelObserver implementation:
   virtual void TabInsertedAt(TabContents* contents, int index,
                              bool foreground);
   virtual void TabDetachedAt(TabContents* contents, int index);
   virtual void TabSelectedAt(TabContents* old_contents,
                              TabContents* contents, int index,
                              bool user_gesture);
   virtual void TabMoved(TabContents* contents, int from_index,
                         int to_index);
   virtual void TabChangedAt(TabContents* contents, int index,
                             TabChangeType change_type);
   virtual void TabReplacedAt(TabContents* old_contents,
                              TabContents* new_contents, int index);
   virtual void TabPinnedStateChanged(TabContents* contents, int index);
   virtual void TabBlockedStateChanged(TabContents* contents, int index);
 
  private:
   TabStripModel* model_;
   SideTabStrip* tabstrip_;
 
+  // If non-NULL it means we're showing a menu for the tab.
+  class TabContextMenuContents;

[sky, 2010/03/19 16:14:02]

move class definition before all fields.

+  scoped_ptr<TabContextMenuContents> context_menu_contents_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserTabStripController);
 };
 
 #endif  // CHROME_BROWSER_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_