wip: Refactoring Ash's AppListController, moving the bulk of the logic to chrome/browser/ui/ash/app…

ash/shell.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/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 39 matching lines @@
 #include "ash/shell_delegate.h"
 #include "ash/shell_factory.h"
 #include "ash/shell_init_params.h"
 #include "ash/shell_window_ids.h"
 #include "ash/system/locale/locale_notification_controller.h"
 #include "ash/system/status_area_widget.h"
 #include "ash/system/toast/toast_manager.h"
 #include "ash/system/tray/system_tray_delegate.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "ash/utility/partial_screenshot_controller.h"
-#include "ash/wm/app_list_controller.h"
 #include "ash/wm/ash_focus_rules.h"
 #include "ash/wm/ash_native_cursor_manager.h"
 #include "ash/wm/coordinate_conversion.h"
 #include "ash/wm/event_client_impl.h"
 #include "ash/wm/lock_state_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_window_manager.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/overlay_event_filter.h"
 #include "ash/wm/overview/window_selector_controller.h"
 #include "ash/wm/power_button_controller.h"
 #include "ash/wm/resize_shadow_controller.h"
 #include "ash/wm/root_window_layout_manager.h"
 #include "ash/wm/system_gesture_event_filter.h"
 #include "ash/wm/system_modal_container_event_filter.h"
 #include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/toplevel_window_event_handler.h"
 #include "ash/wm/video_detector.h"
 #include "ash/wm/window_animations.h"
 #include "ash/wm/window_cycle_controller.h"
 #include "ash/wm/window_positioner.h"
 #include "ash/wm/window_properties.h"
 #include "ash/wm/window_util.h"
 #include "ash/wm/workspace_controller.h"
 #include "base/bind.h"
 #include "base/trace_event/trace_event.h"
+#include "ui/app_list/shower/app_list_shower.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/env.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/base/user_activity/user_activity_detector.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/events/event_target_iterator.h"
@@ skipping 193 matching lines @@
   aura::Window* root =
       wm::GetRootWindowMatching(gfx::Rect(location_in_screen, gfx::Size()));
   GetRootWindowController(root)
       ->ShowContextMenu(location_in_screen, source_type);
 }
 
 void Shell::ShowAppList(aura::Window* window) {
   // If the context window is not given, show it on the target root window.
   if (!window)
     window = GetTargetRootWindow();
-  if (!app_list_controller_)
-    app_list_controller_.reset(new AppListController);
-  app_list_controller_->Show(window);
+  delegate_->GetAppListShower()->Show(window);
 }
 
 void Shell::DismissAppList() {
-  if (!app_list_controller_)
-    return;
-  app_list_controller_->Dismiss();
+  delegate_->GetAppListShower()->Dismiss();
 }
 
 void Shell::ToggleAppList(aura::Window* window) {
-  if (app_list_controller_ && app_list_controller_->IsVisible()) {
+  if (delegate_->GetAppListShower()->IsVisible()) {
     DismissAppList();
     return;
   }
 
   ShowAppList(window);
 }
 
 bool Shell::GetAppListTargetVisibility() const {
-  return app_list_controller_.get() &&
-      app_list_controller_->GetTargetVisibility();
-}
-
-aura::Window* Shell::GetAppListWindow() {
-  return app_list_controller_.get() ? app_list_controller_->GetWindow()
-                                    : nullptr;
-}
-
-app_list::AppListView* Shell::GetAppListView() {
-  return app_list_controller_.get() ? app_list_controller_->GetView() : nullptr;
+  return delegate_->GetAppListShower()->GetTargetVisibility();
 }
 
 bool Shell::IsSystemModalWindowOpen() const {
   if (simulate_modal_window_open_for_testing_)
     return true;
   const std::vector<aura::Window*> containers = GetContainersFromAllRootWindows(
       kShellWindowId_SystemModalContainer, nullptr);
   for (std::vector<aura::Window*>::const_iterator cit = containers.begin();
        cit != containers.end(); ++cit) {
     for (aura::Window::Windows::const_iterator wit = (*cit)->children().begin();
@@ skipping 367 matching lines @@
 // since the latters destructor triggers events that the former is listening
 // to but no longer cares about.
 #if defined(OS_CHROMEOS)
   virtual_keyboard_controller_.reset();
 #endif
 
   // Destroy maximize mode controller early on since it has some observers which
   // need to be removed.
   maximize_mode_controller_.reset();
 
-  // AppList needs to be released before shelf layout manager, which is
-  // destroyed with shelf container in the loop below. However, app list
-  // container is now on top of shelf container and released after it.
-  // TODO(xiyuan): Move it back when app list container is no longer needed.
-  app_list_controller_.reset();
-
 #if defined(OS_CHROMEOS)
   // Destroy the LastWindowClosedLogoutReminder before the
   // LogoutConfirmationController.
   last_window_closed_logout_reminder_.reset();
 
   // Destroy the LogoutConfirmationController before the SystemTrayDelegate.
   logout_confirmation_controller_.reset();
 #endif
 
   // Destroy the keyboard before closing the shelf, since it will invoke a shelf
@@ skipping 478 matching lines @@
 
 void Shell::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash