[ChromeOS] Freezes WebUI OOBE/Login window until tab is rendered.

chrome/browser/chromeos/login/webui_login_view.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_CHROMEOS_LOGIN_WEBUI_LOGIN_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_VIEW_H_
 #pragma once
 
 #include "chrome/browser/chromeos/login/login_html_dialog.h"
 #include "chrome/browser/chromeos/status/status_area_host.h"
+#include "chrome/browser/chromeos/tab_first_render_watcher.h"
 #include "chrome/browser/ui/views/unhandled_keyboard_event_handler.h"
 #include "content/browser/tab_contents/tab_contents_delegate.h"
 #include "views/view.h"
 
 class DOMView;
 class GURL;
 class Profile;
 class WebUI;
 
 namespace views {
 class Widget;
 }
 
 namespace chromeos {
 
 class StatusAreaView;
+class TabFirstRenderWatcher;
 
 // View used to render a WebUI supporting Widget. This widget is used for the
 // WebUI based start up and lock screens. It contains a StatusAreaView and
 // DOMView.
 class WebUILoginView : public views::View,
                        public StatusAreaHost,
                        public TabContentsDelegate,
-                       public chromeos::LoginHtmlDialog::Delegate {
+                       public chromeos::LoginHtmlDialog::Delegate,
+                       public TabFirstRenderWatcher::Delegate {
  public:
   static const int kStatusAreaCornerPadding;
 
   WebUILoginView();
   virtual ~WebUILoginView();
 
   // Initializes the webui login view.
   virtual void Init();
 
   // Overridden from views::Views:
@@ skipping 35 matching lines @@
       const views::View* button_view) const OVERRIDE;
   virtual void OpenButtonOptions(const views::View* button_view) OVERRIDE;
   virtual ScreenMode GetScreenMode() const OVERRIDE;
   virtual TextStyle GetTextStyle() const OVERRIDE;
   virtual void ButtonVisibilityChanged(views::View* button_view) OVERRIDE;
 
   // Overridden from LoginHtmlDialog::Delegate:
   virtual void OnDialogClosed() OVERRIDE;
   virtual void OnLocaleChanged() OVERRIDE;
 
+  // TabFirstRenderWatcher::Delegate implementation.
+  virtual void OnTabMainFrameLoaded() OVERRIDE;
+  virtual void OnTabMainFrameFirstRender() OVERRIDE;
+
   // Creates and adds the status area (separate window).
   virtual void InitStatusArea();
 
   StatusAreaView* status_area_;
 
   Profile* profile_;
 
   // DOMView for rendering a webpage as a webui login.
   DOMView* webui_login_;
 
@@ skipping 13 matching lines @@
 
   // Converts keyboard events on the TabContents to accelerators.
   UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
 
   // Maps installed accelerators to OOBE webui accelerator identifiers.
   AccelMap accel_map_;
 
   // Proxy settings dialog that can be invoked from network menu.
   scoped_ptr<LoginHtmlDialog> proxy_settings_dialog_;
 
+  // Watches webui_login_'s TabContents rendering.
+  scoped_ptr<TabFirstRenderWatcher> tab_watcher_;
+
+  // Whether the host window is frozen.
+  bool host_window_frozen_;
+
   DISALLOW_COPY_AND_ASSIGN(WebUILoginView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_WEBUI_LOGIN_VIEW_H_