1 /*

     2  * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions are

     6  * met:

     7  *

     8  *     * Redistributions of source code must retain the above copyright

     9  * notice, this list of conditions and the following disclaimer.

    10  *     * Redistributions in binary form must reproduce the above

    11  * copyright notice, this list of conditions and the following disclaimer

    12  * in the documentation and/or other materials provided with the

    13  * distribution.

    14  *     * Neither the name of Google Inc. nor the names of its

    15  * contributors may be used to endorse or promote products derived from

    16  * this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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    23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

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    25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    29  */

    30 

    31 #ifndef V8LazyEventListener_h

    32 #define V8LazyEventListener_h

    33 

    34 #include "PlatformString.h"

    35 #include "V8AbstractEventListener.h"

    36 #include <v8.h>

    37 #include <wtf/PassRefPtr.h>

    38 

    39 namespace WebCore {

    40 

    41     class Event;

    42     class Frame;

    43 

    44     // V8LazyEventListener is a wrapper for a JavaScript code string that is compiled and evaluated when an event is fired.

    45     // A V8LazyEventListener is always a HTML event handler.

    46     class V8LazyEventListener : public V8AbstractEventListener {

    47     public:

    48         static PassRefPtr<V8LazyEventListener> create(const String& functionName, bool isSVGEvent, const String& code, const String& sourceURL, int lineNumber, int columnNumber, const WorldContextHandle& worldContext)

    49         {

    50             return adoptRef(new V8LazyEventListener(functionName, isSVGEvent, code, sourceURL, lineNumber, columnNumber, worldContext));

    51         }

    52 

    53         virtual bool isLazy() const { return true; }

    54 

    55     protected:

    56         virtual void prepareListenerObject(ScriptExecutionContext*);

    57 

    58     private:

    59         V8LazyEventListener(const String& functionName, bool isSVGEvent, const String& code, const String sourceURL, int lineNumber, int columnNumber, const WorldContextHandle& worldContext);

    60 

    61         virtual v8::Local<v8::Value> callListenerFunction(ScriptExecutionContext*, v8::Handle<v8::Value> jsEvent, Event*);

    62 

    63         // Needs to return true for all event handlers implemented in JavaScript so that

    64         // the SVG code does not add the event handler in both

    65         // SVGUseElement::buildShadowTree and again in

    66         // SVGUseElement::transferEventListenersToShadowTree

    67         virtual bool wasCreatedFromMarkup() const { return true; }

    68 

    69         String m_functionName;

    70         bool m_isSVGEvent;

    71         String m_code;

    72         String m_sourceURL;

    73         int m_lineNumber;

    74         int m_columnNumber;

    75     };

    76 

    77 } // namespace WebCore

    78 

    79 #endif // V8LazyEventListener_h