| // Copyright 2013 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_DOWNLOAD_DOWNLOAD_UI_CONTROLLER_H_ |
| #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UI_CONTROLLER_H_ |
| |
| #include <set> |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "chrome/browser/download/all_download_item_notifier.h" |
| |
| // This class handles the task of observing a single DownloadManager for |
| // notifying the UI when a new download should be displayed in the UI. |
| // It invokes the OnNewDownloadReady() method of hte Delegate when the |
| // target path is available for a new download. |
| class DownloadUIController : public AllDownloadItemNotifier::Observer { |
| public: |
| // The delegate is responsible for figuring out how to notify the UI. |
| class Delegate { |
| public: |
| virtual ~Delegate(); |
| |
| // This method is invoked to notify the UI of the new download |item|. Note |
| // that |item| may be in any state by the time this method is invoked. |
| virtual void OnNewDownloadReady(content::DownloadItem* item) = 0; |
| }; |
| |
| // |manager| is the download manager to observe for new downloads. If |
| // |delegate.get()| is NULL, then the default delegate is constructed. |
| // |
| // On Android the default delegate notifies DownloadControllerAndroid. On |
| // other platforms the target of the notification is a Browser object. |
| // |
| // Currently explicit delegates are only used for testing. |
| DownloadUIController(content::DownloadManager* manager, |
| scoped_ptr<Delegate> delegate); |
| |
| ~DownloadUIController() override; |
| |
| private: |
| void OnDownloadCreated(content::DownloadManager* manager, |
| content::DownloadItem* item) override; |
| void OnDownloadUpdated(content::DownloadManager* manager, |
| content::DownloadItem* item) override; |
| |
| AllDownloadItemNotifier download_notifier_; |
| |
| scoped_ptr<Delegate> delegate_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DownloadUIController); |
| }; |
| |
| #endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UI_CONTROLLER_H_ |