[Mac]Implement ViewID support. (third approach)

chrome/browser/cocoa/toolbar_controller.mm

 // 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.
 
 #import "chrome/browser/cocoa/toolbar_controller.h"
 
 #include <algorithm>
 
 #include "app/l10n_util_mac.h"
 #include "app/menus/accelerator_cocoa.h"
@@ skipping 15 matching lines @@
 #import "chrome/browser/cocoa/extensions/browser_action_button.h"
 #import "chrome/browser/cocoa/extensions/browser_actions_container_view.h"
 #import "chrome/browser/cocoa/extensions/browser_actions_controller.h"
 #import "chrome/browser/cocoa/gradient_button_cell.h"
 #import "chrome/browser/cocoa/location_bar/autocomplete_text_field_editor.h"
 #import "chrome/browser/cocoa/location_bar/location_bar_view_mac.h"
 #import "chrome/browser/cocoa/menu_button.h"
 #import "chrome/browser/cocoa/menu_controller.h"
 #import "chrome/browser/cocoa/reload_button.h"
 #import "chrome/browser/cocoa/toolbar_view.h"
+#import "chrome/browser/cocoa/view_id_util.h"
 #import "chrome/browser/cocoa/wrench_menu_controller.h"
 #include "chrome/browser/net/url_fixer_upper.h"
 #include "chrome/browser/pref_service.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/search_engines/template_url_model.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/toolbar_model.h"
 #include "chrome/browser/upgrade_detector.h"
 #include "chrome/browser/wrench_menu_model.h"
 #include "chrome/common/notification_details.h"
@@ skipping 172 matching lines @@
                           profile:profile
                           browser:browser
                    resizeDelegate:resizeDelegate
                      nibFileNamed:@"Toolbar"])) {
   }
   return self;
 }
 
 
 - (void)dealloc {
+  // Unset ViewIDs of toolbar elements.
+  // ViewIDs of |toolbarView|, |reloadButton_|, |locationBar_| and
+  // |browserActionsContainerView_| are handled by themselves.
+  view_id_util::UnsetID(backButton_);
+  view_id_util::UnsetID(forwardButton_);
+  view_id_util::UnsetID(homeButton_);
+  view_id_util::UnsetID(wrenchButton_);
+
   // Make sure any code in the base class which assumes [self view] is
   // the "parent" view continues to work.
   hasToolbar_ = YES;
   hasLocationBar_ = YES;
 
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 
   if (trackingArea_.get())
     [[self view] removeTrackingArea:trackingArea_.get()];
   [super dealloc];
@@ skipping 78 matching lines @@
   [reloadButton_ addToolTipRect:[reloadButton_ bounds] owner:self userData:nil];
 
   // If the user has any Browser Actions installed, the container view for them
   // may have to be resized depending on the width of the toolbar frame.
   [toolbarView setPostsFrameChangedNotifications:YES];
   [[NSNotificationCenter defaultCenter]
       addObserver:self
          selector:@selector(toolbarFrameChanged)
              name:NSViewFrameDidChangeNotification
            object:toolbarView];
+
+  // Set ViewIDs for toolbar elements which don't have their dedicated class.
+  // ViewIDs of |toolbarView|, |reloadButton_|, |locationBar_| and
+  // |browserActionsContainerView_| are handled by themselves.
+  view_id_util::SetID(backButton_, VIEW_ID_BACK_BUTTON);
+  view_id_util::SetID(forwardButton_, VIEW_ID_FORWARD_BUTTON);
+  view_id_util::SetID(homeButton_, VIEW_ID_HOME_BUTTON);
+  view_id_util::SetID(wrenchButton_, VIEW_ID_APP_MENU);
 }
 
 - (void)addAccessibilityDescriptions {
   // Set accessibility descriptions. http://openradar.appspot.com/7496255
   NSString* description = l10n_util::GetNSStringWithFixup(IDS_ACCNAME_BACK);
   [[backButton_ cell]
       accessibilitySetOverrideValue:description
                        forAttribute:NSAccessibilityDescriptionAttribute];
   description = l10n_util::GetNSStringWithFixup(IDS_ACCNAME_FORWARD);
   [[forwardButton_ cell]
@@ skipping 439 matching lines @@
 - (void)indicateDropURLsInView:(NSView*)view at:(NSPoint)point {
   // Do nothing.
 }
 
 // (URLDropTargetController protocol)
 - (void)hideDropURLsIndicatorInView:(NSView*)view {
   // Do nothing.
 }
 
 @end