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
36static 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
59static 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
78static 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
99static JSStaticFunction JSNode_staticFunctions[] = {
100    { "appendChild", JSNode_appendChild, kJSPropertyAttributeDontDelete },
101    { "removeChild", JSNode_removeChild, kJSPropertyAttributeDontDelete },
102    { "replaceChild", JSNode_replaceChild, kJSPropertyAttributeDontDelete },
103    { 0, 0, 0 }
104};
105
106static 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
122static 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
132static 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
141static 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
148static 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
158static void JSNode_finalize(JSObjectRef object)
159{
160    Node* node = JSObjectGetPrivate(object);
161    ASSERT(node);
162
163    Node_deref(node);
164}
165
166JSClassRef 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
183JSObjectRef JSNode_new(JSContextRef context, Node* node)
184{
185    return JSObjectMake(context, JSNode_class(context), node);
186}
187
188JSObjectRef 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}
197