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// 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/event_types.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 {
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|.
explicit KeyboardController(KeyboardControllerProxy* proxy);
virtual ~KeyboardController();
// Returns the container for the keyboard, which is owned by
// KeyboardController.
aura::Window* GetContainerWindow();
// Hides virtual keyboard and notifies observer bounds change.
// This function should be called with a delay to avoid layout flicker
// when the focus of input field quickly change.
void HideKeyboard();
// Management of the observer list.
virtual void AddObserver(KeyboardControllerObserver* observer);
virtual void RemoveObserver(KeyboardControllerObserver* observer);
private:
// For access to Observer methods for simulation.
friend class KeyboardControllerTest;
// aura::WindowObserver overrides
virtual void OnWindowHierarchyChanged(
const HierarchyChangeParams& params) OVERRIDE;
// InputMethodObserver overrides
virtual void OnTextInputTypeChanged(
const ui::TextInputClient* client) OVERRIDE {}
virtual void OnFocus() OVERRIDE {}
virtual void OnBlur() OVERRIDE {}
virtual void OnUntranslatedIMEMessage(
const base::NativeEvent& event) OVERRIDE {}
virtual void OnCaretBoundsChanged(
const ui::TextInputClient* client) OVERRIDE {}
virtual void OnInputLocaleChanged() OVERRIDE {}
virtual void OnTextInputStateChanged(
const ui::TextInputClient* client) OVERRIDE;
virtual void OnInputMethodDestroyed(
const ui::InputMethod* input_method) OVERRIDE;
// Returns true if keyboard is scheduled to hide.
bool WillHideKeyboard() const;
scoped_ptr<KeyboardControllerProxy> proxy_;
scoped_ptr<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_
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