API/tests/JSNode.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 "JSStringRef.h"
  30 #include "JSValueRef.h"
  31 #include "Node.h"
  32 #include "NodeList.h"
  33 #include "UnusedParam.h"
  34 #include <wtf/Assertions.h>
  35
  36 static JSValueRef JSNode_appendChild(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
  37 {
  38     UNUSED_PARAM(function);
  39
  40     /* Example of throwing a type error for invalid values */
  41     if (!JSValueIsObjectOfClass(context, thisObject, JSNode_class(context))) {
  42         JSStringRef message = JSStringCreateWithUTF8CString("TypeError: appendChild can only be called on nodes");
  43         *exception = JSValueMakeString(context, message);
  44         JSStringRelease(message);
  45     } else if (argumentCount < 1 || !JSValueIsObjectOfClass(context, arguments[0], JSNode_class(context))) {
  46         JSStringRef message = JSStringCreateWithUTF8CString("TypeError: first argument to appendChild must be a node");
  47         *exception = JSValueMakeString(context, message);
  48         JSStringRelease(message);
  49     } else {
  50         Node* node = JSObjectGetPrivate(thisObject);
  51         Node* child = JSObjectGetPrivate(JSValueToObject(context, arguments[0], NULL));
  52
  53         Node_appendChild(node, child);
  54     }
  55
  56     return JSValueMakeUndefined(context);
  57 }
  58
  59 static JSValueRef JSNode_removeChild(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
  60 {
  61     UNUSED_PARAM(function);
  62
  63     /* Example of ignoring invalid values */
  64     if (argumentCount > 0) {
  65         if (JSValueIsObjectOfClass(context, thisObject, JSNode_class(context))) {
  66             if (JSValueIsObjectOfClass(context, arguments[0], JSNode_class(context))) {
  67                 Node* node = JSObjectGetPrivate(thisObject);
  68                 Node* child = JSObjectGetPrivate(JSValueToObject(context, arguments[0], exception));
  69
  70                 Node_removeChild(node, child);
  71             }
  72         }
  73     }
  74
  75     return JSValueMakeUndefined(context);
  76 }
  77
  78 static JSValueRef JSNode_replaceChild(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
  79 {
  80     UNUSED_PARAM(function);
  81
  82     if (argumentCount > 1) {
  83         if (JSValueIsObjectOfClass(context, thisObject, JSNode_class(context))) {
  84             if (JSValueIsObjectOfClass(context, arguments[0], JSNode_class(context))) {
  85                 if (JSValueIsObjectOfClass(context, arguments[1], JSNode_class(context))) {
  86                     Node* node = JSObjectGetPrivate(thisObject);
  87                     Node* newChild = JSObjectGetPrivate(JSValueToObject(context, arguments[0], exception));
  88                     Node* oldChild = JSObjectGetPrivate(JSValueToObject(context, arguments[1], exception));
  89
  90                     Node_replaceChild(node, newChild, oldChild);
  91                 }
  92             }
  93         }
  94     }
  95
  96     return JSValueMakeUndefined(context);
  97 }
  98
  99 static JSStaticFunction JSNode_staticFunctions[] = {
 100     { "appendChild", JSNode_appendChild, kJSPropertyAttributeDontDelete },
 101     { "removeChild", JSNode_removeChild, kJSPropertyAttributeDontDelete },
 102     { "replaceChild", JSNode_replaceChild, kJSPropertyAttributeDontDelete },
 103     { 0, 0, 0 }
 104 };
 105
 106 static JSValueRef JSNode_getNodeType(JSContextRef context, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
 107 {
 108     UNUSED_PARAM(propertyName);
 109     UNUSED_PARAM(exception);
 110
 111     Node* node = JSObjectGetPrivate(object);
 112     if (node) {
 113         JSStringRef nodeType = JSStringCreateWithUTF8CString(node->nodeType);
 114         JSValueRef value = JSValueMakeString(context, nodeType);
 115         JSStringRelease(nodeType);
 116         return value;
 117     }
 118
 119     return NULL;
 120 }
 121
 122 static JSValueRef JSNode_getChildNodes(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
 123 {
 124     UNUSED_PARAM(propertyName);
 125     UNUSED_PARAM(exception);
 126
 127     Node* node = JSObjectGetPrivate(thisObject);
 128     ASSERT(node);
 129     return JSNodeList_new(context, NodeList_new(node));
 130 }
 131
 132 static JSValueRef JSNode_getFirstChild(JSContextRef context, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
 133 {
 134     UNUSED_PARAM(object);
 135     UNUSED_PARAM(propertyName);
 136     UNUSED_PARAM(exception);
 137
 138     return JSValueMakeUndefined(context);
 139 }
 140
 141 static JSStaticValue JSNode_staticValues[] = {
 142     { "nodeType", JSNode_getNodeType, NULL, kJSPropertyAttributeDontDelete | kJSPropertyAttributeReadOnly },
 143     { "childNodes", JSNode_getChildNodes, NULL, kJSPropertyAttributeDontDelete | kJSPropertyAttributeReadOnly },
 144     { "firstChild", JSNode_getFirstChild, NULL, kJSPropertyAttributeDontDelete | kJSPropertyAttributeReadOnly },
 145     { 0, 0, 0, 0 }
 146 };
 147
 148 static void JSNode_initialize(JSContextRef context, JSObjectRef object)
 149 {
 150     UNUSED_PARAM(context);
 151
 152     Node* node = JSObjectGetPrivate(object);
 153     ASSERT(node);
 154
 155     Node_ref(node);
 156 }
 157
 158 static void JSNode_finalize(JSObjectRef object)
 159 {
 160     Node* node = JSObjectGetPrivate(object);
 161     ASSERT(node);
 162
 163     Node_deref(node);
 164 }
 165
 166 JSClassRef JSNode_class(JSContextRef context)
 167 {
 168     UNUSED_PARAM(context);
 169
 170     static JSClassRef jsClass;
 171     if (!jsClass) {
 172         JSClassDefinition definition = kJSClassDefinitionEmpty;
 173         definition.staticValues = JSNode_staticValues;
 174         definition.staticFunctions = JSNode_staticFunctions;
 175         definition.initialize = JSNode_initialize;
 176         definition.finalize = JSNode_finalize;
 177
 178         jsClass = JSClassCreate(&definition);
 179     }
 180     return jsClass;
 181 }
 182
 183 JSObjectRef JSNode_new(JSContextRef context, Node* node)
 184 {
 185     return JSObjectMake(context, JSNode_class(context), node);
 186 }
 187
 188 JSObjectRef JSNode_construct(JSContextRef context, JSObjectRef object, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
 189 {
 190     UNUSED_PARAM(object);
 191     UNUSED_PARAM(argumentCount);
 192     UNUSED_PARAM(arguments);
 193     UNUSED_PARAM(exception);
 194
 195     return JSNode_new(context, Node_new());
 196 }