API/tests/JSNodeList.c

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