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_FAVICON_FAVICON_HANDLER_DELEGATE_H_ 6 #define CHROME_BROWSER_FAVICON_FAVICON_HANDLER_DELEGATE_H_ 7 8 class GURL; 9 10 namespace content { 11 class NavigationEntry; 12 } 13 14 // This class provides a delegate interface for a FaviconHandler. It allows the 15 // FaviconHandler to ask its delegate for information or notify its delegate 16 // about changes. 17 class FaviconHandlerDelegate { 18 public: 19 // Returns the current NavigationEntry. 20 virtual content::NavigationEntry* GetActiveEntry() = 0; 21 22 // Starts the download for the given favicon. When finished, the delegate 23 // will call OnDidDownloadFavicon() with the results. 24 // Returns the unique id of the download request. The id will be passed 25 // in OnDidDownloadFavicon(). 26 // Bitmaps with pixel sizes larger than |max_bitmap_size| are filtered out 27 // from the bitmap results. If there are no bitmap results <= 28 // |max_bitmap_size|, the smallest bitmap is resized to |max_bitmap_size| and 29 // is the only result. A |max_bitmap_size| of 0 means unlimited. 30 virtual int StartDownload(const GURL& url, int max_bitmap_size) = 0; 31 32 // Notifies the delegate that the favicon for the active entry was updated. 33 // |icon_url_changed| is true if a favicon with a different icon URL has 34 // been selected since the previous call to NotifyFaviconUpdated(). 35 virtual void NotifyFaviconUpdated(bool icon_url_changed) = 0; 36 }; 37 38 #endif // CHROME_BROWSER_FAVICON_FAVICON_HANDLER_DELEGATE_H_ 39
