Implement back/forward toolbar menus on Mac....

chrome/browser/cocoa/toolbar_controller.h

 // Copyright (c) 2009 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_COCOA_TOOLBAR_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_TOOLBAR_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/scoped_ptr.h"
 #include "base/scoped_nsobject.h"
 #import "chrome/browser/cocoa/command_observer_bridge.h"
 #import "chrome/browser/cocoa/bookmark_bar_controller.h"
+#import "chrome/browser/cocoa/delayedmenu_button.h"
 #import "chrome/browser/cocoa/view_resizer.h"
 #include "chrome/common/pref_member.h"
 
 @class AutocompleteTextField;
 @class AutocompleteTextFieldEditor;
+@class DelayedMenuButton;
+@class BackForwardMenuController;
+class Browser;
 class CommandUpdater;
 class LocationBar;
 class LocationBarViewMac;
 namespace ToolbarControllerInternal {
 class PrefObserverBridge;
 }
 class Profile;
 class TabContents;
 class ToolbarModel;
 class ToolbarView;
 
 // A controller for the toolbar in the browser window. Manages
 // updating the state for location bar and back/fwd/reload/go buttons.
 // Manages the bookmark bar and it's position in the window relative to
 // the web content view.
 
 @interface ToolbarController :
     NSViewController<CommandObserverProtocol, ViewResizer> {
  @private
   ToolbarModel* toolbarModel_;  // weak, one per window
   CommandUpdater* commands_;  // weak, one per window
   Profile* profile_;  // weak, one per window
+  Browser* browser_;  // weak, one per window
   scoped_ptr<CommandObserverBridge> commandObserver_;
   scoped_ptr<LocationBarViewMac> locationBarView_;
   scoped_nsobject<AutocompleteTextFieldEditor> autocompleteTextFieldEditor_;
   scoped_nsobject<BookmarkBarController> bookmarkBarController_;
   id<ViewResizer> resizeDelegate_;  // weak
   id<BookmarkURLOpener> bookmarkBarDelegate_;  // weak
+  scoped_nsobject<BackForwardMenuController> backMenuController_;
+  scoped_nsobject<BackForwardMenuController> forwardMenuController_;
 
   // Used for monitoring the optional toolbar button prefs.
   scoped_ptr<ToolbarControllerInternal::PrefObserverBridge> prefObserver_;
   BooleanPrefMember showHomeButton_;
   BooleanPrefMember showPageOptionButtons_;
   BOOL hasToolbar_;  // if NO, we only have the location bar.
 
   IBOutlet NSMenu* pageMenu_;
   IBOutlet NSMenu* wrenchMenu_;
 
   // The ordering is important for unit tests. If new items are added or the
   // ordering is changed, make sure to update |-toolbarViews| and the
   // corresponding enum in the unit tests.
-  IBOutlet NSButton* backButton_;
-  IBOutlet NSButton* forwardButton_;
+  IBOutlet DelayedMenuButton* backButton_;
+  IBOutlet DelayedMenuButton* forwardButton_;
   IBOutlet NSButton* reloadButton_;
   IBOutlet NSButton* homeButton_;
   IBOutlet NSButton* starButton_;
   IBOutlet NSButton* goButton_;
   IBOutlet NSButton* pageButton_;
   IBOutlet NSButton* wrenchButton_;
   IBOutlet AutocompleteTextField* locationBar_;
 }
 
 // Initialize the toolbar and register for command updates. The profile is
-// needed for initializing the location bar.
+// needed for initializing the location bar. The browser is needed for
+// initializing the back/forward menus.
 - (id)initWithModel:(ToolbarModel*)model
            commands:(CommandUpdater*)commands
             profile:(Profile*)profile
+            browser:(Browser*)browser
      resizeDelegate:(id<ViewResizer>)resizeDelegate
    bookmarkDelegate:(id<BookmarkURLOpener>)delegate;
 
 // Get the C++ bridge object representing the location bar for this tab.
 - (LocationBar*)locationBar;
 
 // Called by the Window delegate so we can provide a custom field editor if
 // needed.
 // Note that this may be called for objects unrelated to the toolbar.
 // returns nil if we don't want to override the custom field editor for |obj|.
@@ skipping 33 matching lines @@
 
 // A set of private methods used by tests, in the absence of "friends" in ObjC.
 @interface ToolbarController(PrivateTestMethods)
 // Returns an array of views in the order of the outlets above.
 - (NSArray*)toolbarViews;
 - (void)showOptionalHomeButton;
 - (void)showOptionalPageWrenchButtons;
 @end
 
 #endif  // CHROME_BROWSER_COCOA_TOOLBAR_CONTROLLER_H_