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 // |preferred_image_size| is used to select the size of the returned image if 27 // the |url| is a multi resolution image. 28 // |max_image_size| is the maximal size of the image. If the image at |url| is 29 // bigger than this, it will be resized. 0 means unlimited. 30 virtual int StartDownload(const GURL& url, 31 int preferred_image_size, 32 int max_image_size) = 0; 33 34 // Notifies the delegate that the favicon for the active entry was updated. 35 // |icon_url_changed| is true if a favicon with a different icon URL has 36 // been selected since the previous call to NotifyFaviconUpdated(). 37 virtual void NotifyFaviconUpdated(bool icon_url_changed) = 0; 38 }; 39 40 #endif // CHROME_BROWSER_FAVICON_FAVICON_HANDLER_DELEGATE_H_ 41
