third_party/WebKit/Source/core/html/HTMLImageLoader.h

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  * Copyright (C) 2004 Apple Computer, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public License
  17  * along with this library; see the file COPYING.LIB.  If not, write to
  18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifndef HTMLImageLoader_h
  24 #define HTMLImageLoader_h
  25
  26 #include "core/CoreExport.h"
  27 #include "core/loader/ImageLoader.h"
  28
  29 namespace blink {
  30
  31 class CORE_EXPORT HTMLImageLoader final : public ImageLoader {
  32 public:
  33     static PassOwnPtrWillBeRawPtr<HTMLImageLoader> create(Element* element)
  34     {
  35         return adoptPtrWillBeNoop(new HTMLImageLoader(element));
  36     }
  37     ~HTMLImageLoader() override;
  38
  39     void dispatchLoadEvent() override;
  40
  41     void notifyFinished(Resource*) override;
  42
  43 private:
  44     Timer<HTMLImageLoader> m_loadFallbackContentTimer;
  45     void timerFired(Timer<HTMLImageLoader>*);
  46     explicit HTMLImageLoader(Element*);
  47     void noImageResourceToLoad() override;
  48     void ensureFallbackContent();
  49 };
  50
  51 }
  52
  53 #endif