[Aura] Implement views-based applist.

chrome/browser/ui/views/aura/app_list/extension_item.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_EXTENSION_ITEM_H_
+#define CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_EXTENSION_ITEM_H_
+#pragma once
+
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/extensions/image_loading_tracker.h"
+#include "chrome/browser/ui/views/aura/app_list/chrome_app_list_item.h"
+#include "chrome/common/string_ordinal.h"
+
+class Extension;
+class ExtensionResource;
+class Profile;
+class SkBitmap;
+
+// ExtensionItem represents an extension app in app list.
+class ExtensionItem : public ChromeAppListItem,

[Ben Goodger (Google), 2011/12/20 19:07:18]

ExtensionAppItem then?

[xiyuan, 2011/12/20 21:55:50]

Done.

+                      public ImageLoadingTracker::Observer {
+ public:
+  ExtensionItem(Profile* profile, const Extension* extension);
+  virtual ~ExtensionItem();
+
+  // Gets extension associated with this model. Returns NULL if extension
+  // no longer exists.
+  const Extension* GetExtension() const;
+
+  int page_index() const {
+    return page_index_;
+  }
+
+  const StringOrdinal& launch_ordinal() const {
+    return launch_ordinal_;
+  }
+
+ private:
+  // Loads extension icon.
+  void LoadImage(const Extension* extension);
+
+  // Loads default extension icon.
+  void LoadDefaultImage();
+
+  // Overridden from ChromeAppListItem:
+  virtual void Activate(int event_flags) OVERRIDE;
+
+  // Overridden from ImageLoadingTracker::Observer
+  virtual void OnImageLoaded(SkBitmap* image,
+                             const ExtensionResource& resource,
+                             int tracker_index) OVERRIDE;
+
+  Profile* profile_;
+  const std::string extension_id_;
+
+  const int page_index_;
+  const StringOrdinal launch_ordinal_;
+
+  scoped_ptr<ImageLoadingTracker> tracker_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExtensionItem);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_AURA_APP_LIST_EXTENSION_ITEM_H_