Converts WmActivationObserver to aura::client::ActivationChangeObserver

ash/common/shelf/shelf_layout_manager.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/common/shelf/shelf_layout_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <vector>
 
 #include "ash/animation/animation_change_type.h"
 #include "ash/common/session/session_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/shelf_layout_manager_observer.h"
 #include "ash/common/shelf/shelf_widget.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/system/status_area_widget.h"
 #include "ash/common/wm/fullscreen_window_finder.h"
 #include "ash/common/wm/mru_window_tracker.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_screen_util.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
 #include "ash/public/cpp/shell_window_ids.h"
 #include "ash/root_window_controller.h"
+#include "ash/shell.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "base/i18n/rtl.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/display/display.h"
 #include "ui/display/screen.h"
 #include "ui/events/event.h"
 #include "ui/events/event_handler.h"
 #include "ui/keyboard/keyboard_controller.h"
 #include "ui/keyboard/keyboard_util.h"
 #include "ui/views/border.h"
 #include "ui/views/widget/widget.h"
+#include "ui/wm/public/activation_client.h"
 
 namespace ash {
 namespace {
 
 // Delay before showing the shelf. This is after the mouse stops moving.
 const int kAutoHideDelayMS = 200;
 
 // Duration of the animation to show or hide the shelf.
 const int kAnimationDurationMS = 200;
 
@@ skipping 96 matching lines @@
       gesture_drag_amount_(0.f),
       gesture_drag_auto_hide_state_(SHELF_AUTO_HIDE_SHOWN),
       update_shelf_observer_(NULL),
       chromevox_panel_height_(0),
       duration_override_in_ms_(0),
       shelf_background_type_(SHELF_BACKGROUND_OVERLAP) {
   DCHECK(shelf_widget_);
   DCHECK(wm_shelf_);
   WmShell::Get()->AddShellObserver(this);
   WmShell::Get()->AddLockStateObserver(this);
-  WmShell::Get()->AddActivationObserver(this);
+  Shell::GetInstance()->activation_client()->AddObserver(this);
   WmShell::Get()->session_controller()->AddSessionStateObserver(this);
   state_.session_state =
       WmShell::Get()->session_controller()->GetSessionState();
 }
 
 ShelfLayoutManager::~ShelfLayoutManager() {
   if (update_shelf_observer_)
     update_shelf_observer_->Detach();
 
   for (auto& observer : observers_)
     observer.WillDeleteShelfLayoutManager();
   WmShell::Get()->RemoveShellObserver(this);
   WmShell::Get()->RemoveLockStateObserver(this);
   WmShell::Get()->session_controller()->RemoveSessionStateObserver(this);
 }
 
 void ShelfLayoutManager::PrepareForShutdown() {
   in_shutdown_ = true;
   // Stop observing changes to avoid updating a partially destructed shelf.
-  WmShell::Get()->RemoveActivationObserver(this);
+  Shell::GetInstance()->activation_client()->RemoveObserver(this);
 }
 
 bool ShelfLayoutManager::IsVisible() const {
   // status_area_widget() may be NULL during the shutdown.
   return shelf_widget_->status_area_widget() &&
          shelf_widget_->status_area_widget()->IsVisible() &&
          (state_.visibility_state == SHELF_VISIBLE ||
           (state_.visibility_state == SHELF_AUTO_HIDE &&
            state_.auto_hide_state == SHELF_AUTO_HIDE_SHOWN));
 }
@@ skipping 206 matching lines @@
 void ShelfLayoutManager::OnShelfAutoHideBehaviorChanged(WmWindow* root_window) {
   UpdateVisibilityState();
 }
 
 void ShelfLayoutManager::OnPinnedStateChanged(WmWindow* pinned_window) {
   // Shelf needs to be hidden on entering to pinned mode, or restored
   // on exiting from pinned mode.
   UpdateVisibilityState();
 }
 
-void ShelfLayoutManager::OnWindowActivated(WmWindow* gained_active,
-                                           WmWindow* lost_active) {
+void ShelfLayoutManager::OnWindowActivated(ActivationReason reason,
+                                           aura::Window* gained_active,
+                                           aura::Window* lost_active) {
   UpdateAutoHideStateNow();
 }
 
 void ShelfLayoutManager::OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) {
   bool keyboard_is_about_to_hide = false;
   if (new_bounds.IsEmpty() && !keyboard_bounds_.IsEmpty())
     keyboard_is_about_to_hide = true;
   // If new window behavior flag enabled and in non-sticky mode, do not change
   // the work area.
   bool change_work_area =
@@ skipping 716 matching lines @@
   gesture_drag_status_ = GESTURE_DRAG_NONE;
 }
 
 void ShelfLayoutManager::CancelGestureDrag() {
   gesture_drag_status_ = GESTURE_DRAG_CANCEL_IN_PROGRESS;
   UpdateVisibilityState();
   gesture_drag_status_ = GESTURE_DRAG_NONE;
 }
 
 }  // namespace ash