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// Copyright 2016 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_BASE_IME_WIN_ON_SCREEN_KEYBOARD_DISPLAY_MANAGER_TAB_TIP_H_
#define UI_BASE_IME_WIN_ON_SCREEN_KEYBOARD_DISPLAY_MANAGER_TAB_TIP_H_
#include <string>
#include "base/component_export.h"
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "base/observer_list.h"
#include "ui/base/ime/virtual_keyboard_controller.h"
#include "ui/gfx/geometry/rect.h"
namespace ui {
class OnScreenKeyboardDetector;
// This class provides an implementation of the VirtualKeyboardController
// that uses heuristics and the TabTip.exe to display the on screen keyboard.
// Used on Windows > 7 and Windows < 10.0.10240.0
class COMPONENT_EXPORT(UI_BASE_IME_WIN)
OnScreenKeyboardDisplayManagerTabTip final
: public VirtualKeyboardController {
public:
OnScreenKeyboardDisplayManagerTabTip(HWND hwnd);
~OnScreenKeyboardDisplayManagerTabTip() override;
// VirtualKeyboardController overrides.
bool DisplayVirtualKeyboard() override;
void DismissVirtualKeyboard() override;
void AddObserver(VirtualKeyboardControllerObserver* observer) override;
void RemoveObserver(VirtualKeyboardControllerObserver* observer) override;
bool IsKeyboardVisible() override;
// Returns the path of the on screen keyboard exe (TabTip.exe) in the
// |osk_path| parameter.
// Returns true on success.
bool GetOSKPath(std::wstring* osk_path);
private:
friend class OnScreenKeyboardTest;
friend class OnScreenKeyboardDetector;
void NotifyKeyboardVisible(const gfx::Rect& occluded_rect);
void NotifyKeyboardHidden();
std::unique_ptr<OnScreenKeyboardDetector> keyboard_detector_;
base::ObserverList<VirtualKeyboardControllerObserver, false>::Unchecked
observers_;
HWND hwnd_;
// The location of TabTip.exe.
std::wstring osk_path_;
DISALLOW_COPY_AND_ASSIGN(OnScreenKeyboardDisplayManagerTabTip);
};
} // namespace ui
#endif // UI_BASE_IME_WIN_ON_SCREEN_KEYBOARD_DISPLAY_MANAGER_TAB_TIP_H_
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