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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  * Copyright (C) 2013 Google Inc. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1.  Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  * notice, this list of conditions and the following disclaimer in the
     12  * documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     21  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     23  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef PluginView_h
     27 #define PluginView_h
     28 
     29 #include "core/platform/ScrollTypes.h"
     30 #include "core/platform/Widget.h"
     31 #include "wtf/text/WTFString.h"
     32 
     33 struct NPObject;
     34 
     35 namespace WebKit { class WebLayer; }
     36 
     37 namespace WebCore {
     38 
     39 class ResourceError;
     40 class ResourceResponse;
     41 class Scrollbar;
     42 
     43 class PluginView : public Widget {
     44 public:
     45     virtual bool isPluginView() const { return true; }
     46 
     47     virtual WebKit::WebLayer* platformLayer() const { return 0; }
     48     virtual NPObject* scriptableObject() { return 0; }
     49     virtual bool getFormValue(String&) { return false; }
     50     virtual bool wantsWheelEvents() { return false; }
     51     virtual bool supportsKeyboardFocus() const { return false; }
     52     virtual bool canProcessDrag() const { return false; }
     53 
     54     virtual void didReceiveResponse(const ResourceResponse&) { }
     55     virtual void didReceiveData(const char*, int) { }
     56     virtual void didFinishLoading() { }
     57     virtual void didFailLoading(const ResourceError&) { }
     58 
     59 protected:
     60     PluginView() : Widget() { }
     61 };
     62 
     63 inline PluginView* toPluginView(Widget* widget)
     64 {
     65     ASSERT(!widget || widget->isPluginView());
     66     return static_cast<PluginView*>(widget);
     67 }
     68 
     69 inline const PluginView* toPluginView(const Widget* widget)
     70 {
     71     ASSERT(!widget || widget->isPluginView());
     72     return static_cast<const PluginView*>(widget);
     73 }
     74 
     75 // This will catch anyone doing an unnecessary cast.
     76 void toPluginView(const PluginView*);
     77 
     78 } // namespace WebCore
     79 
     80 #endif // PluginView_h
     81