Replaced BackgroundAnimator with ShelfBackgroundAnimator.

ash/shelf/shelf_view.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/shelf/shelf_view.h"
 
 #include <algorithm>
 #include <memory>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/ash_constants.h"
 #include "ash/common/ash_switches.h"
 #include "ash/common/shelf/app_list_button.h"
 #include "ash/common/shelf/overflow_bubble.h"
 #include "ash/common/shelf/overflow_bubble_view.h"
 #include "ash/common/shelf/overflow_button.h"
+#include "ash/common/shelf/shelf_background_animator.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/shelf_delegate.h"
 #include "ash/common/shelf/shelf_menu_model.h"
 #include "ash/common/shelf/shelf_model.h"
 #include "ash/common/shell_delegate.h"
 #include "ash/common/wm/root_window_finder.h"
 #include "ash/common/wm_shell.h"
 #include "ash/drag_drop/drag_image_view.h"
 #include "ash/scoped_target_root_window.h"
 #include "ash/shelf/shelf.h"
@@ skipping 326 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(StartFadeAnimationDelegate);
 };
 
 // static
 const int ShelfView::kMinimumDragDistance = 8;
 
 ShelfView::ShelfView(ShelfModel* model,
                      ShelfDelegate* delegate,
                      WmShelf* wm_shelf,
-                     Shelf* shelf)
+                     Shelf* shelf,
+                     ShelfBackgroundAnimator* background_animator)
     : model_(model),
       delegate_(delegate),
       wm_shelf_(wm_shelf),
       shelf_(shelf),
       view_model_(new views::ViewModel),
       first_visible_index_(0),
       last_visible_index_(-1),
       overflow_button_(nullptr),
       owner_overflow_bubble_(nullptr),
       tooltip_(this),
       drag_pointer_(NONE),
       drag_view_(nullptr),
       start_drag_index_(-1),
       context_menu_id_(0),
       leading_inset_(kDefaultLeadingInset),
       cancelling_drag_model_changed_(false),
       last_hidden_index_(0),
       closing_event_time_(base::TimeTicks()),
       drag_and_drop_item_pinned_(false),
       drag_and_drop_shelf_id_(0),
       drag_replaced_view_(nullptr),
       dragged_off_shelf_(false),
       snap_back_from_rip_off_view_(nullptr),
       overflow_mode_(false),
       main_shelf_(nullptr),
       dragged_off_from_overflow_to_shelf_(false),
       is_repost_event_on_same_item_(false),
-      last_pressed_index_(-1) {
+      last_pressed_index_(-1),
+      background_animator_(background_animator) {
   DCHECK(model_);
   DCHECK(delegate_);
   DCHECK(wm_shelf_);
   bounds_animator_.reset(new views::BoundsAnimator(this));
   bounds_animator_->AddObserver(this);
   set_context_menu_controller(this);
   focus_search_.reset(new ShelfFocusSearch(view_model_.get()));
 }
 
 ShelfView::~ShelfView() {
   bounds_animator_->RemoveObserver(this);
   model_->RemoveObserver(this);
+  if (background_animator_)
+    background_animator_->RemoveObserver(this);
 }
 
 void ShelfView::Init() {
   model_->AddObserver(this);
 
   const ShelfItems& items(model_->items());
   for (ShelfItems::const_iterator i = items.begin(); i != items.end(); ++i) {
     views::View* child = CreateViewForItem(*i);
     child->SetPaintToLayer(true);
     view_model_->Add(child, static_cast<int>(i - items.begin()));
     AddChildView(child);
   }
   overflow_button_ = new OverflowButton(this, wm_shelf_);
   overflow_button_->set_context_menu_controller(this);
   ConfigureChildView(overflow_button_);
   AddChildView(overflow_button_);
 
+  if (background_animator_)
+    background_animator_->AddObserver(this);
+
   // We'll layout when our bounds change.
 }
 
 void ShelfView::OnShelfAlignmentChanged() {
   overflow_button_->OnShelfAlignmentChanged();
   LayoutToIdealBounds();
   for (int i = 0; i < view_model_->view_size(); ++i) {
     if (i >= first_visible_index_ && i <= last_visible_index_)
       view_model_->view_at(i)->Layout();
   }
@@ skipping 932 matching lines @@
 void ShelfView::ToggleOverflowBubble() {
   if (IsShowingOverflowBubble()) {
     overflow_bubble_->Hide();
     return;
   }
 
   if (!overflow_bubble_)
     overflow_bubble_.reset(new OverflowBubble(wm_shelf_));
 
   ShelfView* overflow_view =
-      new ShelfView(model_, delegate_, wm_shelf_, shelf_);
+      new ShelfView(model_, delegate_, wm_shelf_, shelf_, nullptr);
   overflow_view->overflow_mode_ = true;
   overflow_view->Init();
   overflow_view->set_owner_overflow_bubble(overflow_bubble_.get());
   overflow_view->OnShelfAlignmentChanged();
   overflow_view->main_shelf_ = this;
   UpdateOverflowRange(overflow_view);
 
   overflow_bubble_->Show(overflow_button_, overflow_view);
 
   Shell::GetInstance()->UpdateShelfVisibility();
@@ skipping 156 matching lines @@
 }
 
 void ShelfView::OnGestureEvent(ui::GestureEvent* event) {
   aura::Window* target_window = static_cast<views::View*>(event->target())
                                     ->GetWidget()
                                     ->GetNativeWindow();
   if (gesture_handler_.ProcessGestureEvent(*event, target_window))
     event->StopPropagation();
 }
 
+void ShelfView::UpdateShelfItemBackground(int alpha) {
+  GetAppListButton()->SetBackgroundAlpha(alpha);
+  overflow_button_->SetBackgroundAlpha(alpha);
+}
+
 void ShelfView::ShelfItemAdded(int model_index) {
   {
     base::AutoReset<bool> cancelling_drag(&cancelling_drag_model_changed_,
                                           true);
     model_index = CancelDrag(model_index);
   }
   views::View* view = CreateViewForItem(model_->items()[model_index]);
   AddChildView(view);
   // Hide the view, it'll be made visible when the animation is done. Using
   // opacity 0 here to avoid messing with CalculateIdealBounds which touches
@@ skipping 347 matching lines @@
 
 int ShelfView::CalculateShelfDistance(const gfx::Point& coordinate) const {
   const gfx::Rect bounds = GetBoundsInScreen();
   int distance = shelf_->SelectValueForShelfAlignment(
       bounds.y() - coordinate.y(), coordinate.x() - bounds.right(),
       bounds.x() - coordinate.x());
   return distance > 0 ? distance : 0;
 }
 
 }  // namespace ash