A keyboard widget that manages itself (the animation and all that).

chrome/browser/ui/touch/keyboard/keyboard_manager.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_UI_TOUCH_KEYBOARD_KEYBOARD_MANAGER_H_
+#define CHROME_BROWSER_UI_TOUCH_KEYBOARD_KEYBOARD_MANAGER_H_
+#pragma once
+
+#include "base/memory/singleton.h"
+#include "chrome/browser/extensions/extension_function_dispatcher.h"
+#include "content/browser/tab_contents/tab_contents_observer.h"
+#include "ui/base/animation/animation_delegate.h"
+#include "views/widget/widget.h"
+
+namespace IPC {
+class Message;
+}
+
+namespace ui {
+class InterpolatedTransform;
+class SlideAnimation;
+}
+
+namespace views {
+class KeyEvent;
+}
+
+class DOMView;
+class ExtensionHostMsg_Request_Params;
+
+// A singleton object to manage the virtual keyboard.
+class KeyboardManager : public views::Widget,
+                        public ui::AnimationDelegate,
+                        public TabContentsObserver,
+                        public ExtensionFunctionDispatcher::Delegate {
+ public:
+  // Returns the singleton object.
+  static KeyboardManager* GetInstance();
+
+  // Show the keyboard for the target widget. The events from the keyboard will
+  // be sent to |widget|.
+  void ShowKeyboardForWidget(views::Widget* widget);
+
+  // Overridden from views::Widget
+  void Hide() OVERRIDE;
+
+ private:
+  // Requirement for Singleton
+  friend struct DefaultSingletonTraits<KeyboardManager>;
+
+  KeyboardManager();
+  virtual ~KeyboardManager();
+
+  // Overridden from views::Widget.
+  virtual bool OnKeyEvent(const views::KeyEvent& event) OVERRIDE;
+
+  // Overridden from ui::AnimationDelegate:
+  virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
+  virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
+
+  // Overridden from TabContentsObserver
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  void OnRequest(const ExtensionHostMsg_Request_Params& params);
+
+  // ExtensionFunctionDispatcher::Delegate implementation
+  virtual Browser* GetBrowser() OVERRIDE;
+  virtual gfx::NativeView GetNativeViewOfHost() OVERRIDE;
+  virtual TabContents* GetAssociatedTabContents() const OVERRIDE;
+
+  // The animation.
+  scoped_ptr<ui::SlideAnimation> animation_;
+
+  // Interpolated transform used during animation.
+  scoped_ptr<ui::InterpolatedTransform> transform_;
+
+  DOMView* dom_view_;
+  ExtensionFunctionDispatcher extension_dispatcher_;
+
+  // The widget the events from the keyboard should be directed to.
+  views::Widget* target_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyboardManager);
+};
+
+#endif  // CHROME_BROWSER_UI_TOUCH_KEYBOARD_KEYBOARD_MANAGER_H_