1 /* 2 * Copyright (C) 2006 Apple Computer, 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 #include "JSNode.h" 27 #include "JSNodeList.h" 28 #include "JSObjectRef.h" 29 #include "JSValueRef.h" 30 #include "UnusedParam.h" 31 #include <wtf/Assertions.h> 32 33 static JSValueRef JSNodeList_item(JSContextRef context, JSObjectRef object, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception) 34 { 35 UNUSED_PARAM(object); 36 37 if (argumentCount > 0) { 38 NodeList* nodeList = JSObjectGetPrivate(thisObject); 39 ASSERT(nodeList); 40 Node* node = NodeList_item(nodeList, (unsigned)JSValueToNumber(context, arguments[0], exception)); 41 if (node) 42 return JSNode_new(context, node); 43 } 44 45 return JSValueMakeUndefined(context); 46 } 47 48 static JSStaticFunction JSNodeList_staticFunctions[] = { 49 { "item", JSNodeList_item, kJSPropertyAttributeDontDelete }, 50 { 0, 0, 0 } 51 }; 52 53 static JSValueRef JSNodeList_length(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception) 54 { 55 UNUSED_PARAM(propertyName); 56 UNUSED_PARAM(exception); 57 58 NodeList* nodeList = JSObjectGetPrivate(thisObject); 59 ASSERT(nodeList); 60 return JSValueMakeNumber(context, NodeList_length(nodeList)); 61 } 62 63 static JSStaticValue JSNodeList_staticValues[] = { 64 { "length", JSNodeList_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete }, 65 { 0, 0, 0, 0 } 66 }; 67 68 static JSValueRef JSNodeList_getProperty(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception) 69 { 70 NodeList* nodeList = JSObjectGetPrivate(thisObject); 71 ASSERT(nodeList); 72 double index = JSValueToNumber(context, JSValueMakeString(context, propertyName), exception); 73 unsigned uindex = (unsigned)index; 74 if (uindex == index) { /* false for NaN */ 75 Node* node = NodeList_item(nodeList, uindex); 76 if (node) 77 return JSNode_new(context, node); 78 } 79 80 return NULL; 81 } 82 83 static void JSNodeList_initialize(JSContextRef context, JSObjectRef thisObject) 84 { 85 UNUSED_PARAM(context); 86 87 NodeList* nodeList = JSObjectGetPrivate(thisObject); 88 ASSERT(nodeList); 89 90 NodeList_ref(nodeList); 91 } 92 93 static void JSNodeList_finalize(JSObjectRef thisObject) 94 { 95 NodeList* nodeList = JSObjectGetPrivate(thisObject); 96 ASSERT(nodeList); 97 98 NodeList_deref(nodeList); 99 } 100 101 static JSClassRef JSNodeList_class(JSContextRef context) 102 { 103 UNUSED_PARAM(context); 104 105 static JSClassRef jsClass; 106 if (!jsClass) { 107 JSClassDefinition definition = kJSClassDefinitionEmpty; 108 definition.staticValues = JSNodeList_staticValues; 109 definition.staticFunctions = JSNodeList_staticFunctions; 110 definition.getProperty = JSNodeList_getProperty; 111 definition.initialize = JSNodeList_initialize; 112 definition.finalize = JSNodeList_finalize; 113 114 jsClass = JSClassCreate(&definition); 115 } 116 117 return jsClass; 118 } 119 120 JSObjectRef JSNodeList_new(JSContextRef context, NodeList* nodeList) 121 { 122 return JSObjectMake(context, JSNodeList_class(context), nodeList); 123 } 124