Whitelist virtual keyboard container to process events at login screen

ash/wm/event_client_impl.cc

 // Copyright (c) 2012 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 "ash/wm/event_client_impl.h"
 
 #include "ash/session_state_delegate.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ui/aura/window.h"
+#include "ui/keyboard/keyboard_util.h"
 
 namespace ash {
 namespace internal {
 
 EventClientImpl::EventClientImpl() {
 }
 
 EventClientImpl::~EventClientImpl() {
 }
 
 bool EventClientImpl::CanProcessEventsWithinSubtree(
     const aura::Window* window) const {
   const aura::RootWindow* root_window = window ? window->GetRootWindow() : NULL;
   if (!root_window)
     return true;
   if (Shell::GetInstance()->session_state_delegate()->IsUserSessionBlocked()) {

[James Cook, 2013/08/08 17:29:44]

nit: this function might be clearer with an early return:

if (!IsUserSessionBlocked())
  return true;

[bshe, 2013/08/08 19:39:24]

Merged !root_window and !IsUserSessionBlocked to early return.

On 2013/08/08 17:29:44, James Cook wrote:

     const aura::Window* lock_screen_containers = Shell::GetContainer(
         root_window,
         kShellWindowId_LockScreenContainersContainer);
     const aura::Window* lock_background_containers = Shell::GetContainer(
         root_window,
         kShellWindowId_LockScreenBackgroundContainer);
     const aura::Window* lock_screen_related_containers = Shell::GetContainer(
         root_window,
         kShellWindowId_LockScreenRelatedContainersContainer);
-    return (window->Contains(lock_screen_containers) &&
+    bool can_process_events = (window->Contains(lock_screen_containers) &&
         window->Contains(lock_background_containers) &&
         window->Contains(lock_screen_related_containers)) ||
         lock_screen_containers->Contains(window) ||
         lock_background_containers->Contains(window) ||
         lock_screen_related_containers->Contains(window);
+    if (keyboard::IsKeyboardEnabled()) {
+      const aura::Window* virtual_keyboard_container = Shell::GetContainer(
+          root_window,
+          kShellWindowId_VirtualKeyboardContainer);
+      can_process_events |= (window->Contains(virtual_keyboard_container) ||
+                             virtual_keyboard_container->Contains(window));
+    }
+    return can_process_events;
   }
   return true;
 }
 
 ui::EventTarget* EventClientImpl::GetToplevelEventTarget() {
   return Shell::GetInstance();
 }
 
 }  // namespace internal
 }  // namespace ash