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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_state_delegate.h"
      8 #include "ash/shell.h"
      9 #include "ash/shell_window_ids.h"
     10 #include "ui/aura/window.h"
     11 
     12 namespace ash {
     13 namespace internal {
     14 
     15 EventClientImpl::EventClientImpl() {
     16 }
     17 
     18 EventClientImpl::~EventClientImpl() {
     19 }
     20 
     21 bool EventClientImpl::CanProcessEventsWithinSubtree(
     22     const aura::Window* window) const {
     23   const aura::RootWindow* root_window = window ? window->GetRootWindow() : NULL;
     24   if (!root_window)
     25     return true;
     26   if (Shell::GetInstance()->session_state_delegate()->IsUserSessionBlocked()) {
     27     const aura::Window* lock_screen_containers = Shell::GetContainer(
     28         root_window,
     29         kShellWindowId_LockScreenContainersContainer);
     30     const aura::Window* lock_background_containers = Shell::GetContainer(
     31         root_window,
     32         kShellWindowId_LockScreenBackgroundContainer);
     33     const aura::Window* lock_screen_related_containers = Shell::GetContainer(
     34         root_window,
     35         kShellWindowId_LockScreenRelatedContainersContainer);
     36     return (window->Contains(lock_screen_containers) &&
     37         window->Contains(lock_background_containers) &&
     38         window->Contains(lock_screen_related_containers)) ||
     39         lock_screen_containers->Contains(window) ||
     40         lock_background_containers->Contains(window) ||
     41         lock_screen_related_containers->Contains(window);
     42   }
     43   return true;
     44 }
     45 
     46 ui::EventTarget* EventClientImpl::GetToplevelEventTarget() {
     47   return Shell::GetInstance();
     48 }
     49 
     50 }  // namespace internal
     51 }  // namespace ash
     52