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// 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.
#include "components/browser_watcher/endsession_watcher_window_win.h"
#include "base/logging.h"
#include "base/win/wrapped_window_proc.h"
namespace browser_watcher {
namespace {
const wchar_t kWindowClassName[] = L"Chrome_BrowserWatcherWindow";
} // namespace
EndSessionWatcherWindow::EndSessionWatcherWindow(
const EndSessionMessageCallback& on_end_session_message) :
on_end_session_message_(on_end_session_message) {
WNDCLASSEX window_class = {0};
base::win::InitializeWindowClass(
kWindowClassName,
&base::win::WrappedWindowProc<EndSessionWatcherWindow::WndProcThunk>,
0, 0, 0, NULL, NULL, NULL, NULL, NULL,
&window_class);
instance_ = window_class.hInstance;
ATOM clazz = ::RegisterClassEx(&window_class);
DCHECK(clazz);
// TODO(siggi): will a message window do here?
window_ = ::CreateWindow(kWindowClassName,
0, 0, 0, 0, 0, 0, 0, 0, instance_, 0);
::SetWindowLongPtr(window_, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(this));
DCHECK_EQ(::GetWindowLongPtr(window_, GWLP_USERDATA),
reinterpret_cast<LONG_PTR>(this));
}
EndSessionWatcherWindow::~EndSessionWatcherWindow() {
if (window_) {
::DestroyWindow(window_);
::UnregisterClass(kWindowClassName, instance_);
}
}
LRESULT EndSessionWatcherWindow::OnEndSessionMessage(UINT message,
WPARAM wparam,
LPARAM lparam) {
on_end_session_message_.Run(message, lparam);
return 0;
}
LRESULT CALLBACK EndSessionWatcherWindow::WndProcThunk(HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam) {
EndSessionWatcherWindow* msg_wnd =
reinterpret_cast<EndSessionWatcherWindow*>(
::GetWindowLongPtr(hwnd, GWLP_USERDATA));
if (msg_wnd)
return msg_wnd->WndProc(hwnd, message, wparam, lparam);
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
LRESULT EndSessionWatcherWindow::WndProc(HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam) {
switch (message) {
case WM_ENDSESSION:
case WM_QUERYENDSESSION:
return OnEndSessionMessage(message, wparam, lparam);
default:
break;
}
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
} // namespace browser_watcher
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