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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 #include "ui/keyboard/keyboard_util.h"
     12 
     13 namespace ash {
     14 namespace internal {
     15 
     16 EventClientImpl::EventClientImpl() {
     17 }
     18 
     19 EventClientImpl::~EventClientImpl() {
     20 }
     21 
     22 bool 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 
     55 ui::EventTarget* EventClientImpl::GetToplevelEventTarget() {
     56   return Shell::GetInstance();
     57 }
     58 
     59 }  // namespace internal
     60 }  // namespace ash
     61