1/*
2 * Copyright (C) 2006 Apple 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 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 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 <wtf/Platform.h>
27
28#include "JSNode.h"
29#include "JSNodeList.h"
30#include "JSObjectRef.h"
31#include "JSStringRef.h"
32#include "JSValueRef.h"
33#include "Node.h"
34#include "NodeList.h"
35#include <wtf/Assertions.h>
36
37static JSValueRef JSNode_appendChild(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
38{
39    UNUSED_PARAM(function);
40
41    /* Example of throwing a type error for invalid values */
42    if (!JSValueIsObjectOfClass(context, thisObject, JSNode_class(context))) {
43        JSStringRef message = JSStringCreateWithUTF8CString("TypeError: appendChild can only be called on nodes");
44        *exception = JSValueMakeString(context, message);
45        JSStringRelease(message);
46    } else if (argumentCount < 1 || !JSValueIsObjectOfClass(context, arguments[0], JSNode_class(context))) {
47        JSStringRef message = JSStringCreateWithUTF8CString("TypeError: first argument to appendChild must be a node");
48        *exception = JSValueMakeString(context, message);
49        JSStringRelease(message);
50    } else {
51        Node* node = JSObjectGetPrivate(thisObject);
52        Node* child = JSObjectGetPrivate(JSValueToObject(context, arguments[0], NULL));
53
54        Node_appendChild(node, child);
55    }
56
57    return JSValueMakeUndefined(context);
58}
59
60static JSValueRef JSNode_removeChild(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
61{
62    UNUSED_PARAM(function);
63
64    /* Example of ignoring invalid values */
65    if (argumentCount > 0) {
66        if (JSValueIsObjectOfClass(context, thisObject, JSNode_class(context))) {
67            if (JSValueIsObjectOfClass(context, arguments[0], JSNode_class(context))) {
68                Node* node = JSObjectGetPrivate(thisObject);
69                Node* child = JSObjectGetPrivate(JSValueToObject(context, arguments[0], exception));
70
71                Node_removeChild(node, child);
72            }
73        }
74    }
75
76    return JSValueMakeUndefined(context);
77}
78
79static JSValueRef JSNode_replaceChild(JSContextRef context, JSObjectRef function, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
80{
81    UNUSED_PARAM(function);
82
83    if (argumentCount > 1) {
84        if (JSValueIsObjectOfClass(context, thisObject, JSNode_class(context))) {
85            if (JSValueIsObjectOfClass(context, arguments[0], JSNode_class(context))) {
86                if (JSValueIsObjectOfClass(context, arguments[1], JSNode_class(context))) {
87                    Node* node = JSObjectGetPrivate(thisObject);
88                    Node* newChild = JSObjectGetPrivate(JSValueToObject(context, arguments[0], exception));
89                    Node* oldChild = JSObjectGetPrivate(JSValueToObject(context, arguments[1], exception));
90
91                    Node_replaceChild(node, newChild, oldChild);
92                }
93            }
94        }
95    }
96
97    return JSValueMakeUndefined(context);
98}
99
100static JSStaticFunction JSNode_staticFunctions[] = {
101    { "appendChild", JSNode_appendChild, kJSPropertyAttributeDontDelete },
102    { "removeChild", JSNode_removeChild, kJSPropertyAttributeDontDelete },
103    { "replaceChild", JSNode_replaceChild, kJSPropertyAttributeDontDelete },
104    { 0, 0, 0 }
105};
106
107static JSValueRef JSNode_getNodeType(JSContextRef context, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
108{
109    UNUSED_PARAM(propertyName);
110    UNUSED_PARAM(exception);
111
112    Node* node = JSObjectGetPrivate(object);
113    if (node) {
114        JSStringRef nodeType = JSStringCreateWithUTF8CString(node->nodeType);
115        JSValueRef value = JSValueMakeString(context, nodeType);
116        JSStringRelease(nodeType);
117        return value;
118    }
119
120    return NULL;
121}
122
123static JSValueRef JSNode_getChildNodes(JSContextRef context, JSObjectRef thisObject, JSStringRef propertyName, JSValueRef* exception)
124{
125    UNUSED_PARAM(propertyName);
126    UNUSED_PARAM(exception);
127
128    Node* node = JSObjectGetPrivate(thisObject);
129    ASSERT(node);
130    return JSNodeList_new(context, NodeList_new(node));
131}
132
133static JSValueRef JSNode_getFirstChild(JSContextRef context, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
134{
135    UNUSED_PARAM(object);
136    UNUSED_PARAM(propertyName);
137    UNUSED_PARAM(exception);
138
139    return JSValueMakeUndefined(context);
140}
141
142static JSStaticValue JSNode_staticValues[] = {
143    { "nodeType", JSNode_getNodeType, NULL, kJSPropertyAttributeDontDelete | kJSPropertyAttributeReadOnly },
144    { "childNodes", JSNode_getChildNodes, NULL, kJSPropertyAttributeDontDelete | kJSPropertyAttributeReadOnly },
145    { "firstChild", JSNode_getFirstChild, NULL, kJSPropertyAttributeDontDelete | kJSPropertyAttributeReadOnly },
146    { 0, 0, 0, 0 }
147};
148
149static void JSNode_initialize(JSContextRef context, JSObjectRef object)
150{
151    UNUSED_PARAM(context);
152
153    Node* node = JSObjectGetPrivate(object);
154    ASSERT(node);
155
156    Node_ref(node);
157}
158
159static void JSNode_finalize(JSObjectRef object)
160{
161    Node* node = JSObjectGetPrivate(object);
162    ASSERT(node);
163
164    Node_deref(node);
165}
166
167JSClassRef JSNode_class(JSContextRef context)
168{
169    UNUSED_PARAM(context);
170
171    static JSClassRef jsClass;
172    if (!jsClass) {
173        JSClassDefinition definition = kJSClassDefinitionEmpty;
174        definition.staticValues = JSNode_staticValues;
175        definition.staticFunctions = JSNode_staticFunctions;
176        definition.initialize = JSNode_initialize;
177        definition.finalize = JSNode_finalize;
178
179        jsClass = JSClassCreate(&definition);
180    }
181    return jsClass;
182}
183
184JSObjectRef JSNode_new(JSContextRef context, Node* node)
185{
186    return JSObjectMake(context, JSNode_class(context), node);
187}
188
189JSObjectRef JSNode_construct(JSContextRef context, JSObjectRef object, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
190{
191    UNUSED_PARAM(object);
192    UNUSED_PARAM(argumentCount);
193    UNUSED_PARAM(arguments);
194    UNUSED_PARAM(exception);
195
196    return JSNode_new(context, Node_new());
197}
198