Delay virtual keyboard hiding for 100ms

ui/keyboard/keyboard_controller.h

 // Copyright (c) 2013 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 UI_KEYBOARD_KEYBOARD_CONTROLLER_H_
 #define UI_KEYBOARD_KEYBOARD_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "ui/aura/window_observer.h"
 #include "ui/base/ime/input_method_observer.h"
 #include "ui/keyboard/keyboard_export.h"
 
 namespace aura {
 class Window;
 }
 namespace gfx {
 class Rect;
 }
 namespace ui {
 class InputMethod;
 class TextInputClient;
 }
 
 namespace keyboard {
 
+extern const int kHideKeyboardDelayMs;
+
 class KeyboardControllerObserver;
 class KeyboardControllerProxy;
 class KeyboardLayoutManager;
 
 // Provides control of the virtual keyboard, including providing a container
 // and controlling visibility.
 class KEYBOARD_EXPORT KeyboardController : public ui::InputMethodObserver,
                                            public aura::WindowObserver {
  public:
   // Takes ownership of |proxy|.
@@ skipping 16 matching lines @@
   virtual void OnWindowHierarchyChanged(
       const HierarchyChangeParams& params) OVERRIDE;
   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
 
   // InputMethodObserver overrides
   virtual void OnTextInputStateChanged(
       const ui::TextInputClient* client) OVERRIDE;
   virtual void OnInputMethodDestroyed(
       const ui::InputMethod* input_method) OVERRIDE;
 
+  // Hides virtual keyboard and notifies observer bounds change.
+  // This functions should be called with a delay to avoid keyboard flicking

[kevers, 2013/08/26 15:50:18]

keyboard flicking --> layout flicker

[bshe, 2013/08/26 18:39:17]

Done.

+  // when the focus of input feild quickly change.

[sadrul, 2013/08/26 17:30:31]

*field

[bshe, 2013/08/26 18:39:17]

Done.

+  void HideKeyboard();
+
   scoped_ptr<KeyboardControllerProxy> proxy_;
   aura::Window* container_;
   ui::InputMethod* input_method_;
+  bool keyboard_visible_;
+  base::WeakPtrFactory<KeyboardController> weak_factory_;
 
   ObserverList<KeyboardControllerObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(KeyboardController);
 };
 
 }  // namespace keyboard
 
 #endif  // UI_KEYBOARD_KEYBOARD_CONTROLLER_H_