| // Copyright (c) 2012 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. |
| |
| #include "ui/gfx/win/singleton_hwnd.h" |
| |
| #include "base/memory/singleton.h" |
| #include "base/message_loop/message_loop.h" |
| |
| namespace gfx { |
| |
| // static |
| SingletonHwnd* SingletonHwnd::GetInstance() { |
| return Singleton<SingletonHwnd>::get(); |
| } |
| |
| void SingletonHwnd::AddObserver(Observer* observer) { |
| observer_list_.AddObserver(observer); |
| } |
| |
| void SingletonHwnd::RemoveObserver(Observer* observer) { |
| if (!hwnd()) |
| return; |
| observer_list_.RemoveObserver(observer); |
| } |
| |
| BOOL SingletonHwnd::ProcessWindowMessage(HWND window, |
| UINT message, |
| WPARAM wparam, |
| LPARAM lparam, |
| LRESULT& result, |
| DWORD msg_map_id) { |
| FOR_EACH_OBSERVER(Observer, |
| observer_list_, |
| OnWndProc(window, message, wparam, lparam)); |
| return false; |
| } |
| |
| SingletonHwnd::SingletonHwnd() { |
| if (!base::MessageLoopForUI::IsCurrent()) { |
| // Creating this window in (e.g.) a renderer inhibits shutdown on |
| // Windows. See http://crbug.com/230122 and http://crbug.com/236039. |
| DLOG(ERROR) << "Cannot create windows on non-UI thread!"; |
| return; |
| } |
| WindowImpl::Init(NULL, Rect()); |
| } |
| |
| SingletonHwnd::~SingletonHwnd() { |
| } |
| |
| } // namespace gfx |