EndSessionWatcherWindow implementation.

components/browser_watcher/endsession_watcher_window_win.h

+// Copyright (c) 2015 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 COMPONENTS_BROWSER_WATCHER_ENDSESSION_WATCHER_WINDOW_WIN_H_
+#define COMPONENTS_BROWSER_WATCHER_ENDSESSION_WATCHER_WINDOW_WIN_H_
+
+#include <windows.h>
+
+#include "base/callback.h"
+#include "base/macros.h"
+
+namespace browser_watcher {
+
+class EndSessionWatcherWindow {
+ public:
+  typedef base::Callback<void(LPARAM)> EndSessionCallback;
+
+  explicit EndSessionWatcherWindow(const EndSessionCallback& on_end_session);
+  virtual ~EndSessionWatcherWindow();
+
+  // Exposed for testing.
+  HWND window() const { return window_; }
+
+ private:
+  LRESULT OnEndSession(WPARAM wparam, LPARAM lparam);
+
+  LRESULT WndProc(HWND hwnd, UINT message, WPARAM wparam, LPARAM lparam);
+
+  static LRESULT CALLBACK WndProcThunk(HWND hwnd,
+                                       UINT message,
+                                       WPARAM wparam,
+                                       LPARAM lparam);
+
+  HMODULE instance_;
+  HWND window_;
+
+  EndSessionCallback on_end_session_;
+
+  DISALLOW_COPY_AND_ASSIGN(EndSessionWatcherWindow);
+};
+
+}  // namespace browser_watcher
+
+#endif  // COMPONENTS_BROWSER_WATCHER_ENDSESSION_WATCHER_WINDOW_WIN_H_