cros: Allow JS to control virtual keyboard on sign-in screen.

chrome/browser/chromeos/login/ui/webui_login_view.h

 // Copyright 2014 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_UI_WEBUI_LOGIN_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_
 
 #include <map>
 #include <string>
 
+#include "ash/shell_observer.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "chrome/browser/ui/chrome_web_modal_dialog_manager_delegate.h"
 #include "components/web_modal/web_contents_modal_dialog_host.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_delegate.h"
+#include "ui/keyboard/keyboard_controller_observer.h"
 #include "ui/views/controls/webview/unhandled_keyboard_event_handler.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 #include "url/gurl.h"
 
 namespace content {
 class WebUI;
 }
 
 namespace views {
 class View;
 class WebView;
 class Widget;
 }
 
 namespace chromeos {
 
 class OobeUI;
 
 // View used to render a WebUI supporting Widget. This widget is used for the
 // WebUI based start up and lock screens. It contains a WebView.
 class WebUILoginView : public views::View,
+                       public ash::ShellObserver,
+                       public keyboard::KeyboardControllerObserver,
                        public content::WebContentsDelegate,
                        public content::NotificationObserver,
                        public ChromeWebModalDialogManagerDelegate,
                        public web_modal::WebContentsModalDialogHost {
  public:
   struct WebViewSettings {
     // If true, this will check for and consume a preloaded views::WebView
     // instance.
     bool check_for_preload = false;
 
@@ skipping 77 matching lines @@
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
   views::WebView* web_view();
 
  private:
   // Map type for the accelerator-to-identifier map.
   typedef std::map<ui::Accelerator, std::string> AccelMap;
 
+  // ash::ShellObserver:
+  void OnVirtualKeyboardStateChanged(bool activated,
+                                     ash::WmWindow* root_window) override;
+
+  // keyboard::KeyboardControllerObserver:
+  void OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) override;
+  void OnKeyboardClosed() override;
+
   // Overridden from content::WebContentsDelegate.
   bool HandleContextMenu(const content::ContextMenuParams& params) override;
   void HandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event) override;
   bool IsPopupOrPanel(const content::WebContents* source) const override;
   bool TakeFocus(content::WebContents* source, bool reverse) override;
   void RequestMediaAccessPermission(
       content::WebContents* web_contents,
       const content::MediaStreamRequest& request,
@@ skipping 41 matching lines @@
   bool forward_keyboard_event_ = true;
 
   base::ObserverList<web_modal::ModalDialogHostObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(WebUILoginView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_UI_WEBUI_LOGIN_VIEW_H_