Beginnings of Window Modality support.

ui/aura_shell/shell.cc

 // Copyright (c) 2011 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 "ui/aura_shell/shell.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "ui/aura/aura_switches.h"
 #include "ui/aura/desktop.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_types.h"
 #include "ui/aura_shell/default_container_event_filter.h"
 #include "ui/aura_shell/default_container_layout_manager.h"
 #include "ui/aura_shell/desktop_event_filter.h"
 #include "ui/aura_shell/desktop_layout_manager.h"
 #include "ui/aura_shell/launcher/launcher.h"
+#include "ui/aura_shell/modal_container_layout_manager.h"
 #include "ui/aura_shell/shelf_layout_controller.h"
 #include "ui/aura_shell/shell_delegate.h"
 #include "ui/aura_shell/shell_factory.h"
 #include "ui/aura_shell/shell_window_ids.h"
 #include "ui/aura_shell/stacking_controller.h"
 #include "ui/aura_shell/toplevel_layout_manager.h"
 #include "ui/aura_shell/toplevel_window_event_filter.h"
 #include "ui/aura_shell/workspace_controller.h"
 #include "ui/gfx/compositor/layer.h"
 #include "ui/gfx/compositor/layer_animator.h"
@@ skipping 25 matching lines @@
   always_on_top_container->SetEventFilter(
       new ToplevelWindowEventFilter(always_on_top_container));
   always_on_top_container->set_id(
       internal::kShellWindowId_AlwaysOnTopContainer);
   containers->push_back(always_on_top_container);
 
   aura::Window* launcher_container = new aura::Window(NULL);
   launcher_container->set_id(internal::kShellWindowId_LauncherContainer);
   containers->push_back(launcher_container);
 
+  aura::Window* modal_container = new aura::Window(NULL);
+  modal_container->SetEventFilter(
+      new ToplevelWindowEventFilter(modal_container));
+  modal_container->SetLayoutManager(
+      new internal::ModalContainerLayoutManager(modal_container));
+  modal_container->set_id(internal::kShellWindowId_ModalContainer);
+  containers->push_back(modal_container);
+
+  // TODO(beng): Figure out if we can make this use ModalityEventFilter instead
+  //             of stops_event_propagation.
   aura::Window* lock_container = new aura::Window(NULL);
   lock_container->set_stops_event_propagation(true);
   lock_container->set_id(internal::kShellWindowId_LockScreenContainer);
   containers->push_back(lock_container);
 
   aura::Window* status_container = new aura::Window(NULL);
   status_container->set_id(internal::kShellWindowId_StatusContainer);
   containers->push_back(status_container);
 
   aura::Window* menu_container = new aura::Window(NULL);
@@ skipping 100 matching lines @@
 
 aura::Window* Shell::GetContainer(int container_id) {
   return const_cast<aura::Window*>(
       const_cast<const aura_shell::Shell*>(this)->GetContainer(container_id));
 }
 
 const aura::Window* Shell::GetContainer(int container_id) const {
   return aura::Desktop::GetInstance()->GetChildById(container_id);
 }
 
+void Shell::AddDesktopEventFilter(aura::EventFilter* filter) {
+  static_cast<internal::DesktopEventFilter*>(
+      aura::Desktop::GetInstance()->event_filter())->AddFilter(filter);
+}
+
+void Shell::RemoveDesktopEventFilter(aura::EventFilter* filter) {
+  static_cast<internal::DesktopEventFilter*>(
+      aura::Desktop::GetInstance()->event_filter())->RemoveFilter(filter);
+}
+
 void Shell::ToggleOverview() {
   if (workspace_controller_.get())
     workspace_controller_->ToggleOverview();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, private:
 
 void Shell::EnableWorkspaceManager() {
   aura::Window* default_container =
       GetContainer(internal::kShellWindowId_DefaultContainer);
 
   workspace_controller_.reset(
       new internal::WorkspaceController(default_container));
   workspace_controller_->SetLauncherModel(launcher_->model());
   default_container->SetEventFilter(
       new internal::DefaultContainerEventFilter(default_container));
   default_container->SetLayoutManager(
       new internal::DefaultContainerLayoutManager(
           workspace_controller_->workspace_manager()));
 }
 
 }  // namespace aura_shell