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      1 /*
      2  * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #ifndef HTMLPlugInImageElement_h
     22 #define HTMLPlugInImageElement_h
     23 
     24 #include "HTMLPlugInElement.h"
     25 #include <wtf/OwnPtr.h>
     26 
     27 namespace WebCore {
     28 
     29 class HTMLImageLoader;
     30 class FrameLoader;
     31 
     32 enum PluginCreationOption {
     33     CreateAnyWidgetType,
     34     CreateOnlyNonNetscapePlugins,
     35 };
     36 
     37 enum PreferPlugInsForImagesOption {
     38     ShouldPreferPlugInsForImages,
     39     ShouldNotPreferPlugInsForImages
     40 };
     41 
     42 // Base class for HTMLObjectElement and HTMLEmbedElement
     43 class HTMLPlugInImageElement : public HTMLPlugInElement {
     44 public:
     45     RenderEmbeddedObject* renderEmbeddedObject() const;
     46 
     47     virtual void updateWidget(PluginCreationOption) = 0;
     48 
     49     const String& serviceType() const { return m_serviceType; }
     50     const String& url() const { return m_url; }
     51     bool shouldPreferPlugInsForImages() const { return m_shouldPreferPlugInsForImages; }
     52 
     53 protected:
     54     HTMLPlugInImageElement(const QualifiedName& tagName, Document*, bool createdByParser, PreferPlugInsForImagesOption);
     55 
     56     bool isImageType();
     57 
     58     OwnPtr<HTMLImageLoader> m_imageLoader;
     59     String m_serviceType;
     60     String m_url;
     61 
     62     static void updateWidgetCallback(Node*);
     63     virtual void attach();
     64     virtual void detach();
     65 
     66     bool needsWidgetUpdate() const { return m_needsWidgetUpdate; }
     67     void setNeedsWidgetUpdate(bool needsWidgetUpdate) { m_needsWidgetUpdate = needsWidgetUpdate; }
     68 
     69     bool allowedToLoadFrameURL(const String& url);
     70     bool wouldLoadAsNetscapePlugin(const String& url, const String& serviceType);
     71 
     72     virtual void willMoveToNewOwnerDocument();
     73 
     74 private:
     75     virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
     76     virtual void recalcStyle(StyleChange);
     77 
     78     virtual void finishParsingChildren();
     79 
     80     void updateWidgetIfNecessary();
     81     virtual bool useFallbackContent() const { return false; }
     82 
     83     bool m_needsWidgetUpdate;
     84     bool m_shouldPreferPlugInsForImages;
     85 };
     86 
     87 } // namespace WebCore
     88 
     89 #endif // HTMLPlugInImageElement_h
     90