aura: brightness and volume bubble.

chrome/browser/chromeos/volume_bubble.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 "chrome/browser/chromeos/volume_bubble.h"
 
 #include "base/memory/singleton.h"
 #include "grit/theme_resources.h"
 #include "ui/base/resource/resource_bundle.h"
+#include "views/widget/widget.h"
 
 namespace chromeos {
 
-VolumeBubble::VolumeBubble()
-    : SettingLevelBubble(
-          ResourceBundle::GetSharedInstance().GetBitmapNamed(
-              IDR_VOLUME_BUBBLE_UP_ICON),
-          ResourceBundle::GetSharedInstance().GetBitmapNamed(
-              IDR_VOLUME_BUBBLE_DOWN_ICON),
-          ResourceBundle::GetSharedInstance().GetBitmapNamed(
-              IDR_VOLUME_BUBBLE_MUTE_ICON)) {
-}
-
 // static
 VolumeBubble* VolumeBubble::GetInstance() {
   return Singleton<VolumeBubble>::get();
 }
 
+void VolumeBubble::OnWidgetClosing(views::Widget* widget) {
+  // Bubble faded out.
+  if (widget_ == widget)
+    widget_ = NULL;
+}
+
+void VolumeBubble::ShowBubble(double percent, bool enabled) {
+  if (!widget_) {
+    widget_ = SettingLevelBubble::CreateBubble(
+        ResourceBundle::GetSharedInstance().GetBitmapNamed(
+          IDR_VOLUME_BUBBLE_UP_ICON),
+        ResourceBundle::GetSharedInstance().GetBitmapNamed(
+            IDR_VOLUME_BUBBLE_DOWN_ICON),
+        ResourceBundle::GetSharedInstance().GetBitmapNamed(
+            IDR_VOLUME_BUBBLE_MUTE_ICON),
+        percent,
+        enabled);
+    widget_->AddObserver(this);
+  }
+  SettingLevelBubble::ShowBubble(widget_, percent, enabled);
+}
+
+void VolumeBubble::HideBubble() {
+  if (widget_) {
+    widget_->RemoveObserver(this);
+    widget_->Close();
+    widget_ = NULL;
+  }
+}
+
+VolumeBubble::VolumeBubble()
+    : widget_(NULL) {}
+
+VolumeBubble::~VolumeBubble() {
+  if (widget_) {
+    widget_->RemoveObserver(this);
+    widget_ = NULL;
+  }
+}
+
 }  // namespace chromeos