1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_STATUS_UPDATER_H_ 6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_STATUS_UPDATER_H_ 7 8 #include <set> 9 10 #include "base/basictypes.h" 11 #include "chrome/browser/download/all_download_item_notifier.h" 12 #include "content/public/browser/download_item.h" 13 #include "content/public/browser/download_manager.h" 14 15 // Keeps track of download progress for the entire browser. 16 class DownloadStatusUpdater 17 : public AllDownloadItemNotifier::Observer { 18 public: 19 DownloadStatusUpdater(); 20 virtual ~DownloadStatusUpdater(); 21 22 // Fills in |*download_count| with the number of currently active downloads. 23 // If we know the final size of all downloads, this routine returns true 24 // with |*progress| set to the percentage complete of all in-progress 25 // downloads. Otherwise, it returns false. 26 bool GetProgress(float* progress, int* download_count) const; 27 28 // Add the specified DownloadManager to the list of managers for which 29 // this object reports status. 30 // The manager must not have previously been added to this updater. 31 // The updater will automatically disassociate itself from the 32 // manager when the manager is shutdown. 33 void AddManager(content::DownloadManager* manager); 34 35 // AllDownloadItemNotifier::Observer 36 virtual void OnDownloadCreated( 37 content::DownloadManager* manager, content::DownloadItem* item) OVERRIDE; 38 virtual void OnDownloadUpdated( 39 content::DownloadManager* manager, content::DownloadItem* item) OVERRIDE; 40 41 protected: 42 // Platform-specific function to update the platform UI for download progress. 43 // |download| is the download item that changed. Implementations should not 44 // hold the value of |download| as it is not guaranteed to remain valid. 45 // Virtual to be overridable for testing. 46 virtual void UpdateAppIconDownloadProgress(content::DownloadItem* download); 47 48 private: 49 std::vector<AllDownloadItemNotifier*> notifiers_; 50 51 DISALLOW_COPY_AND_ASSIGN(DownloadStatusUpdater); 52 }; 53 54 #endif // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_STATUS_UPDATER_H_ 55
