Home | History | Annotate | Download | only in webui 
      1 // Copyright (c) 2011 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_UI_WEBUI_FILEICON_SOURCE_H_
      6 #define CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_H_
      7 #pragma once
      8 
      9 #include <string>
     10 
     11 #include "chrome/browser/icon_manager.h"
     12 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
     13 
     14 class GURL;
     15 class RefCountedBytes;
     16 
     17 namespace gfx {
     18 class Image;
     19 }
     20 
     21 // FileIconSource is the gateway between network-level chrome:
     22 // requests for favicons and the history backend that serves these.
     23 class FileIconSource : public ChromeURLDataManager::DataSource {
     24  public:
     25   explicit FileIconSource();
     26 
     27   // Called when the network layer has requested a resource underneath
     28   // the path we registered.
     29   virtual void StartDataRequest(const std::string& path,
     30                                 bool is_incognito,
     31                                 int request_id);
     32 
     33   virtual std::string GetMimeType(const std::string&) const;
     34 
     35   // Called when favicon data is available from the history backend.
     36   void OnFileIconDataAvailable(
     37       IconManager::Handle request_handle,
     38       gfx::Image* icon);
     39 
     40  private:
     41   virtual ~FileIconSource();
     42 
     43   CancelableRequestConsumerT<int, 0> cancelable_consumer_;
     44 
     45   // Raw PNG representation of the favicon to show when the favicon
     46   // database doesn't have a favicon for a webpage.
     47   scoped_refptr<RefCountedBytes> default_favicon_;
     48 
     49   DISALLOW_COPY_AND_ASSIGN(FileIconSource);
     50 };
     51 #endif  // CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_H_
     52