event_client_impl.cc revision 1e9bf3e0803691d0a228da41fc608347b6db4340 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ash/wm/event_client_impl.h"
6
7#include "ash/session_state_delegate.h"
8#include "ash/shell.h"
9#include "ash/shell_window_ids.h"
10#include "ui/aura/window.h"
11#include "ui/keyboard/keyboard_util.h"
12
13namespace ash {
14namespace internal {
15
16EventClientImpl::EventClientImpl() {
17}
18
19EventClientImpl::~EventClientImpl() {
20}
21
22bool EventClientImpl::CanProcessEventsWithinSubtree(
23    const aura::Window* window) const {
24  const aura::Window* root_window = window ? window->GetRootWindow() : NULL;
25  if (!root_window ||
26      !Shell::GetInstance()->session_state_delegate()->IsUserSessionBlocked()) {
27    return true;
28  }
29
30  const aura::Window* lock_screen_containers = Shell::GetContainer(
31      root_window,
32      kShellWindowId_LockScreenContainersContainer);
33  const aura::Window* lock_background_containers = Shell::GetContainer(
34      root_window,
35      kShellWindowId_LockScreenBackgroundContainer);
36  const aura::Window* lock_screen_related_containers = Shell::GetContainer(
37      root_window,
38      kShellWindowId_LockScreenRelatedContainersContainer);
39  bool can_process_events = (window->Contains(lock_screen_containers) &&
40      window->Contains(lock_background_containers) &&
41      window->Contains(lock_screen_related_containers)) ||
42      lock_screen_containers->Contains(window) ||
43      lock_background_containers->Contains(window) ||
44      lock_screen_related_containers->Contains(window);
45  if (keyboard::IsKeyboardEnabled()) {
46    const aura::Window* virtual_keyboard_container = Shell::GetContainer(
47        root_window,
48        kShellWindowId_VirtualKeyboardContainer);
49    can_process_events |= (window->Contains(virtual_keyboard_container) ||
50                           virtual_keyboard_container->Contains(window));
51  }
52  return can_process_events;
53}
54
55ui::EventTarget* EventClientImpl::GetToplevelEventTarget() {
56  return Shell::GetInstance();
57}
58
59}  // namespace internal
60}  // namespace ash
61