Initial implementation of new-style notification

ui/arc/notification/arc_custom_notification_view.cc

 // Copyright 2016 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/arc/notification/arc_custom_notification_view.h"
 
 #include "ash/wm/window_util.h"
 #include "base/auto_reset.h"
 #include "base/memory/ptr_util.h"
 #include "components/exo/notification_surface.h"
 #include "components/exo/surface.h"
 #include "ui/accessibility/ax_action_data.h"
+#include "ui/accessibility/ax_node_data.h"
 #include "ui/arc/notification/arc_notification_view.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/events/event_handler.h"
 #include "ui/gfx/animation/linear_animation.h"
 #include "ui/gfx/animation/tween.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/transform.h"
 #include "ui/message_center/message_center_style.h"
@@ skipping 221 matching lines @@
     surface_manager->AddObserver(this);
     exo::NotificationSurface* surface =
         surface_manager->GetSurface(notification_key_);
     if (surface)
       OnNotificationSurfaceAdded(surface);
   }
 
   // Create a layer as an anchor to insert surface copy during a slide.
   SetPaintToLayer();
   UpdatePreferredSize();
+  UpdateAccessibleName();
 }
 
 ArcCustomNotificationView::~ArcCustomNotificationView() {
   SetSurface(nullptr);
 
   auto* surface_manager = ArcNotificationSurfaceManager::Get();
   if (surface_manager)
     surface_manager->RemoveObserver(this);
   if (item_) {
     item_->RemoveObserver(this);
@@ skipping 212 matching lines @@
       settings_button_->background()->get_color() !=
           GetControlButtonBackgroundColor(item_->GetShownContents()))
     return true;
   if (close_button_ &&
       close_button_->background()->get_color() !=
           GetControlButtonBackgroundColor(item_->GetShownContents()))
     return true;
   return false;
 }
 
+void ArcCustomNotificationView::UpdateAccessibleName() {
+  // Don't update the accessible name when we are about to be destroyed.
+  if (!item_)
+    return;
+
+  accessible_name_ = item_->GetAccessibleName();
+}
+
 void ArcCustomNotificationView::ViewHierarchyChanged(
     const views::View::ViewHierarchyChangedDetails& details) {
   views::Widget* widget = GetWidget();
 
   if (!details.is_add) {
     // Resets slide helper when this view is removed from its parent.
     slide_helper_.reset();
 
     // Bail if this view is no longer attached to a widget or native_view() has
     // attached to a different widget.
@@ skipping 120 matching lines @@
 
 bool ArcCustomNotificationView::HandleAccessibleAction(
     const ui::AXActionData& action_data) {
   if (item_ && action_data.action == ui::AX_ACTION_DO_DEFAULT) {
     item_->ToggleExpansion();
     return true;
   }
   return false;
 }
 
+void ArcCustomNotificationView::GetAccessibleNodeData(
+    ui::AXNodeData* node_data) {
+  node_data->role = ui::AX_ROLE_BUTTON;
+  node_data->SetName(accessible_name_);
+}
+
 void ArcCustomNotificationView::ButtonPressed(views::Button* sender,
                                               const ui::Event& event) {
   if (item_ && !item_->GetPinned() && sender == close_button_.get()) {
     CHECK_EQ(ArcNotificationView::kViewClassName, parent()->GetClassName());
     static_cast<ArcNotificationView*>(parent())->OnCloseButtonPressed();
   }
   if (item_ && settings_button_ && sender == settings_button_) {
     item_->OpenSettings();
   }
 }
@@ skipping 16 matching lines @@
 void ArcCustomNotificationView::OnItemDestroying() {
   item_->RemoveObserver(this);
   item_ = nullptr;
 
   // Reset |surface_| with |item_| since no one is observing the |surface_|
   // after |item_| is gone and this view should be removed soon.
   SetSurface(nullptr);
 }
 
 void ArcCustomNotificationView::OnItemUpdated() {
+  UpdateAccessibleName();
   UpdatePinnedState();
   UpdateSnapshot();
   if (ShouldUpdateControlButtonsColor())
     StartControlButtonsColorAnimation();
 }
 
 void ArcCustomNotificationView::OnNotificationSurfaceAdded(
     exo::NotificationSurface* surface) {
   if (surface->notification_id() != notification_key_)
     return;
@@ skipping 35 matching lines @@
     }
     if (close_button_) {
       close_button_->set_background(
           views::Background::CreateSolidBackground(current_color));
       close_button_->SchedulePaint();
     }
   }
 }
 
 }  // namespace arc