1 /* 2 * Copyright (C) 2008 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 */ 26 27 #ifndef JSDOMGlobalObject_h 28 #define JSDOMGlobalObject_h 29 30 #include <runtime/JSGlobalObject.h> 31 32 namespace WebCore { 33 34 class Event; 35 class JSEventListener; 36 class JSUnprotectedEventListener; 37 class ScriptExecutionContext; 38 39 typedef HashMap<const JSC::ClassInfo*, RefPtr<JSC::Structure> > JSDOMStructureMap; 40 typedef HashMap<const JSC::ClassInfo*, JSC::JSObject*> JSDOMConstructorMap; 41 42 class JSDOMGlobalObject : public JSC::JSGlobalObject { 43 typedef JSC::JSGlobalObject Base; 44 protected: 45 struct JSDOMGlobalObjectData; 46 47 JSDOMGlobalObject(PassRefPtr<JSC::Structure>, JSDOMGlobalObjectData*, JSC::JSObject* thisValue); 48 virtual ~JSDOMGlobalObject(); 49 50 public: structures()51 JSDOMStructureMap& structures() { return d()->structures; } constructors()52 JSDOMConstructorMap& constructors() const { return d()->constructors; } 53 54 virtual ScriptExecutionContext* scriptExecutionContext() const = 0; 55 56 // Finds a wrapper of a JS EventListener, returns 0 if no existing one. 57 JSEventListener* findJSEventListener(JSC::JSValuePtr, bool isInline = false); 58 59 // Finds or creates a wrapper of a JS EventListener. JS EventListener object is GC-protected. 60 PassRefPtr<JSEventListener> findOrCreateJSEventListener(JSC::ExecState*, JSC::JSValuePtr, bool isInline = false); 61 62 // Finds a wrapper of a GC-unprotected JS EventListener, returns 0 if no existing one. 63 JSUnprotectedEventListener* findJSUnprotectedEventListener(JSC::ExecState*, JSC::JSValuePtr, bool isInline = false); 64 65 // Finds or creates a wrapper of a JS EventListener. JS EventListener object is *NOT* GC-protected. 66 PassRefPtr<JSUnprotectedEventListener> findOrCreateJSUnprotectedEventListener(JSC::ExecState*, JSC::JSValuePtr, bool isInline = false); 67 68 typedef HashMap<JSC::JSObject*, JSEventListener*> ListenersMap; 69 typedef HashMap<JSC::JSObject*, JSUnprotectedEventListener*> UnprotectedListenersMap; 70 71 ListenersMap& jsEventListeners(); 72 ListenersMap& jsInlineEventListeners(); 73 UnprotectedListenersMap& jsUnprotectedEventListeners(); 74 UnprotectedListenersMap& jsUnprotectedInlineEventListeners(); 75 76 void setCurrentEvent(Event*); 77 Event* currentEvent(); 78 79 virtual void mark(); 80 81 protected: 82 struct JSDOMGlobalObjectData : public JSC::JSGlobalObject::JSGlobalObjectData { 83 JSDOMGlobalObjectData(); 84 85 JSDOMStructureMap structures; 86 JSDOMConstructorMap constructors; 87 88 JSDOMGlobalObject::ListenersMap jsEventListeners; 89 JSDOMGlobalObject::ListenersMap jsInlineEventListeners; 90 JSDOMGlobalObject::UnprotectedListenersMap jsUnprotectedEventListeners; 91 JSDOMGlobalObject::UnprotectedListenersMap jsUnprotectedInlineEventListeners; 92 93 Event* evt; 94 }; 95 96 private: d()97 JSDOMGlobalObjectData* d() const { return static_cast<JSDOMGlobalObjectData*>(JSC::JSVariableObject::d); } 98 }; 99 100 template<class ConstructorClass> getDOMConstructor(JSC::ExecState * exec)101 inline JSC::JSObject* getDOMConstructor(JSC::ExecState* exec) 102 { 103 if (JSC::JSObject* constructor = getCachedDOMConstructor(exec, &ConstructorClass::s_info)) 104 return constructor; 105 JSC::JSObject* constructor = new (exec) ConstructorClass(exec); 106 cacheDOMConstructor(exec, &ConstructorClass::s_info, constructor); 107 return constructor; 108 } 109 110 template<class ConstructorClass> getDOMConstructor(JSC::ExecState * exec,JSDOMGlobalObject * globalObject)111 inline JSC::JSObject* getDOMConstructor(JSC::ExecState* exec, JSDOMGlobalObject* globalObject) 112 { 113 if (JSC::JSObject* constructor = globalObject->constructors().get(&ConstructorClass::s_info)) 114 return constructor; 115 JSC::JSObject* constructor = new (exec) ConstructorClass(exec, globalObject->scriptExecutionContext()); 116 ASSERT(!globalObject->constructors().contains(&ConstructorClass::s_info)); 117 globalObject->constructors().set(&ConstructorClass::s_info, constructor); 118 return constructor; 119 } 120 121 JSDOMGlobalObject* toJSDOMGlobalObject(ScriptExecutionContext*); 122 123 } // namespace WebCore 124 125 #endif // JSDOMGlobalObject_h 126