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      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/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 
     13 namespace ash {
     14 
     15 EventClientImpl::EventClientImpl() {
     16 }
     17 
     18 EventClientImpl::~EventClientImpl() {
     19 }
     20 
     21 bool EventClientImpl::CanProcessEventsWithinSubtree(
     22     const aura::Window* window) const {
     23   const aura::Window* root_window = window ? window->GetRootWindow() : NULL;
     24   if (!root_window ||
     25       !Shell::GetInstance()->session_state_delegate()->IsUserSessionBlocked()) {
     26     return true;
     27   }
     28 
     29   const aura::Window* lock_screen_containers = Shell::GetContainer(
     30       root_window,
     31       kShellWindowId_LockScreenContainersContainer);
     32   const aura::Window* lock_background_containers = Shell::GetContainer(
     33       root_window,
     34       kShellWindowId_LockScreenBackgroundContainer);
     35   const aura::Window* lock_screen_related_containers = Shell::GetContainer(
     36       root_window,
     37       kShellWindowId_LockScreenRelatedContainersContainer);
     38   bool can_process_events = (window->Contains(lock_screen_containers) &&
     39       window->Contains(lock_background_containers) &&
     40       window->Contains(lock_screen_related_containers)) ||
     41       lock_screen_containers->Contains(window) ||
     42       lock_background_containers->Contains(window) ||
     43       lock_screen_related_containers->Contains(window);
     44   if (keyboard::IsKeyboardEnabled()) {
     45     const aura::Window* virtual_keyboard_container = Shell::GetContainer(
     46         root_window,
     47         kShellWindowId_VirtualKeyboardContainer);
     48     can_process_events |= (window->Contains(virtual_keyboard_container) ||
     49                            virtual_keyboard_container->Contains(window));
     50   }
     51   return can_process_events;
     52 }
     53 
     54 ui::EventTarget* EventClientImpl::GetToplevelEventTarget() {
     55   return Shell::GetInstance();
     56 }
     57 
     58 }  // namespace ash
     59