1/* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * Copyright (C) 2012 Apple 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#ifndef Dictionary_h 28#define Dictionary_h 29 30#include "JSDictionary.h" 31#include "JSEventListener.h" 32#include <bindings/ScriptValue.h> 33#include <wtf/HashMap.h> 34#include <wtf/text/CString.h> 35#include <wtf/text/WTFString.h> 36 37namespace JSC { 38class JSValue; 39} 40 41namespace WebCore { 42class EventListener; 43 44class Dictionary { 45public: 46 Dictionary(); 47 Dictionary(JSC::ExecState*, JSC::JSValue); 48 49 // Returns true if a value was found for the provided property. 50 template <typename Result> 51 bool get(const char* propertyName, Result&) const; 52 template <typename Result> 53 bool get(const String& propertyName, Result&) const; 54 55 template <typename T> 56 PassRefPtr<EventListener> getEventListener(const char* propertyName, T* target) const; 57 template <typename T> 58 PassRefPtr<EventListener> getEventListener(const String& propertyName, T* target) const; 59 60 bool isObject() const { return m_dictionary.isValid(); } 61 bool isUndefinedOrNull() const { return !m_dictionary.isValid(); } 62 bool getOwnPropertiesAsStringHashMap(HashMap<String, String>&) const; 63 bool getOwnPropertyNames(Vector<String>&) const; 64 bool getWithUndefinedOrNullCheck(const String& propertyName, String& value) const; 65 66private: 67 template <typename T> 68 JSC::JSObject* asJSObject(T*) const; 69 70 JSDictionary m_dictionary; 71}; 72 73template <typename Result> 74bool Dictionary::get(const char* propertyName, Result& result) const 75{ 76 if (!m_dictionary.isValid()) 77 return false; 78 79 return m_dictionary.get(propertyName, result); 80} 81 82template <typename Result> 83bool Dictionary::get(const String& propertyName, Result& result) const 84{ 85 return get(propertyName.utf8().data(), result); 86} 87 88template <typename T> 89PassRefPtr<EventListener> Dictionary::getEventListener(const char* propertyName, T* target) const 90{ 91 if (!m_dictionary.isValid()) 92 return 0; 93 94 Deprecated::ScriptValue eventListener; 95 if (!m_dictionary.tryGetProperty(propertyName, eventListener)) 96 return 0; 97 if (eventListener.hasNoValue()) 98 return 0; 99 if (!eventListener.isObject()) 100 return 0; 101 102 return JSEventListener::create(asObject(eventListener.jsValue()), asJSObject(target), true, currentWorld(m_dictionary.execState())); 103} 104 105template <typename T> 106PassRefPtr<EventListener> Dictionary::getEventListener(const String& propertyName, T* target) const 107{ 108 return getEventListener(propertyName.utf8().data(), target); 109} 110 111} 112 113#endif // Dictionary_h 114