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 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 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 "bindings/v8/V8AbstractEventListener.h" 35 #include <v8.h> 36 #include "wtf/PassRefPtr.h" 37 #include "wtf/text/TextPosition.h" 38 #include "wtf/text/WTFString.h" 39 40 namespace WebCore { 41 42 class Event; 43 class LocalFrame; 44 class HTMLFormElement; 45 class Node; 46 47 // V8LazyEventListener is a wrapper for a JavaScript code string that is compiled and evaluated when an event is fired. 48 // A V8LazyEventListener is either a HTML or SVG event handler. 49 class V8LazyEventListener FINAL : public V8AbstractEventListener { 50 public: create(const AtomicString & functionName,const AtomicString & eventParameterName,const String & code,const String & sourceURL,const TextPosition & position,Node * node,v8::Isolate * isolate)51 static PassRefPtr<V8LazyEventListener> create(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String& sourceURL, const TextPosition& position, Node* node, v8::Isolate* isolate) 52 { 53 return adoptRef(new V8LazyEventListener(functionName, eventParameterName, code, sourceURL, position, node, isolate)); 54 } 55 isLazy()56 virtual bool isLazy() const OVERRIDE { return true; } 57 // V8LazyEventListener is always for the main world. world()58 virtual DOMWrapperWorld& world() const OVERRIDE { return DOMWrapperWorld::mainWorld(); } 59 60 virtual void handleEvent(ExecutionContext*, Event*) OVERRIDE; 61 62 protected: 63 virtual void prepareListenerObject(ExecutionContext*) OVERRIDE; 64 65 private: 66 V8LazyEventListener(const AtomicString& functionName, const AtomicString& eventParameterName, const String& code, const String sourceURL, const TextPosition&, Node*, v8::Isolate*); 67 68 virtual v8::Local<v8::Value> callListenerFunction(v8::Handle<v8::Value> jsEvent, Event*) OVERRIDE; 69 70 // Needs to return true for all event handlers implemented in JavaScript so that 71 // the SVG code does not add the event handler in both 72 // SVGUseElement::buildShadowTree and again in 73 // SVGUseElement::transferEventListenersToShadowTree wasCreatedFromMarkup()74 virtual bool wasCreatedFromMarkup() const OVERRIDE { return true; } 75 76 AtomicString m_functionName; 77 AtomicString m_eventParameterName; 78 String m_code; 79 String m_sourceURL; 80 Node* m_node; 81 TextPosition m_position; 82 }; 83 84 } // namespace WebCore 85 86 #endif // V8LazyEventListener_h 87