1 /**
2 * Copyright (C) 2005-2009 Alfresco Software Limited.
3 *
4 * This file is part of the Spring Surf Extension project.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.springframework.extensions.webscripts;
20
21 import java.util.Iterator;
22 import java.util.Map;
23
24 import org.mozilla.javascript.Scriptable;
25 import org.mozilla.javascript.Wrapper;
26
27
28 /**
29 * Wrapper for exposing maps in Rhino scripts.
30 *
31 * Note: A duplicate of this map implementation exists in the Repository project
32 *
33 * @author davidc
34 */
35 public class NativeMap implements Scriptable, Wrapper
36 {
37 private static final long serialVersionUID = 3664761893203964569L;
38
39 private Map<Object, Object> map;
40 private Scriptable parentScope;
41 private Scriptable prototype;
42
43
44 /**
45 * Construct
46 *
47 * @param scope
48 * @param map
49 * @return native map
50 */
51 public static NativeMap wrap(Scriptable scope, Map<Object, Object> map)
52 {
53 return new NativeMap(scope, map);
54 }
55
56 /**
57 * Construct
58 *
59 * @param scope
60 * @param map
61 */
62 public NativeMap(Scriptable scope, Map<Object, Object> map)
63 {
64 this.parentScope = scope;
65 this.map = map;
66 }
67
68 /* (non-Javadoc)
69 * @see org.mozilla.javascript.Wrapper#unwrap()
70 */
71 public Object unwrap()
72 {
73 return map;
74 }
75
76 /* (non-Javadoc)
77 * @see org.mozilla.javascript.Scriptable#getClassName()
78 */
79 public String getClassName()
80 {
81 return "NativeMap";
82 }
83
84 /* (non-Javadoc)
85 * @see org.mozilla.javascript.Scriptable#get(java.lang.String, org.mozilla.javascript.Scriptable)
86 */
87 public Object get(String name, Scriptable start)
88 {
89 // get the property from the underlying QName map
90 if ("length".equals(name))
91 {
92 return map.size();
93 }
94 else
95 {
96 return map.get(name);
97 }
98 }
99
100 /* (non-Javadoc)
101 * @see org.mozilla.javascript.Scriptable#get(int, org.mozilla.javascript.Scriptable)
102 */
103 public Object get(int index, Scriptable start)
104 {
105 Object value = null;
106 int i=0;
107 Iterator itrValues = map.values().iterator();
108 while (i++ <= index && itrValues.hasNext())
109 {
110 value = itrValues.next();
111 }
112 return value;
113 }
114
115 /* (non-Javadoc)
116 * @see org.mozilla.javascript.Scriptable#has(java.lang.String, org.mozilla.javascript.Scriptable)
117 */
118 public boolean has(String name, Scriptable start)
119 {
120 // locate the property in the underlying map
121 return map.containsKey(name);
122 }
123
124 /* (non-Javadoc)
125 * @see org.mozilla.javascript.Scriptable#has(int, org.mozilla.javascript.Scriptable)
126 */
127 public boolean has(int index, Scriptable start)
128 {
129 return (index >= 0 && map.values().size() > index);
130 }
131
132 /* (non-Javadoc)
133 * @see org.mozilla.javascript.Scriptable#put(java.lang.String, org.mozilla.javascript.Scriptable, java.lang.Object)
134 */
135 @SuppressWarnings("unchecked")
136 public void put(String name, Scriptable start, Object value)
137 {
138 map.put(name, value);
139 }
140
141 /* (non-Javadoc)
142 * @see org.mozilla.javascript.Scriptable#put(int, org.mozilla.javascript.Scriptable, java.lang.Object)
143 */
144 public void put(int index, Scriptable start, Object value)
145 {
146 // TODO: implement?
147 }
148
149 /* (non-Javadoc)
150 * @see org.mozilla.javascript.Scriptable#delete(java.lang.String)
151 */
152 public void delete(String name)
153 {
154 map.remove(name);
155 }
156
157 /* (non-Javadoc)
158 * @see org.mozilla.javascript.Scriptable#delete(int)
159 */
160 public void delete(int index)
161 {
162 int i=0;
163 Iterator itrKeys = map.keySet().iterator();
164 while (i <= index && itrKeys.hasNext())
165 {
166 Object key = itrKeys.next();
167 if (i == index)
168 {
169 map.remove(key);
170 break;
171 }
172 }
173 }
174
175 /* (non-Javadoc)
176 * @see org.mozilla.javascript.Scriptable#getPrototype()
177 */
178 public Scriptable getPrototype()
179 {
180 return this.prototype;
181 }
182
183 /* (non-Javadoc)
184 * @see org.mozilla.javascript.Scriptable#setPrototype(org.mozilla.javascript.Scriptable)
185 */
186 public void setPrototype(Scriptable prototype)
187 {
188 this.prototype = prototype;
189 }
190
191 /* (non-Javadoc)
192 * @see org.mozilla.javascript.Scriptable#getParentScope()
193 */
194 public Scriptable getParentScope()
195 {
196 return this.parentScope;
197 }
198
199 /* (non-Javadoc)
200 * @see org.mozilla.javascript.Scriptable#setParentScope(org.mozilla.javascript.Scriptable)
201 */
202 public void setParentScope(Scriptable parent)
203 {
204 this.parentScope = parent;
205 }
206
207 /* (non-Javadoc)
208 * @see org.mozilla.javascript.Scriptable#getIds()
209 */
210 public Object[] getIds()
211 {
212 return map.keySet().toArray();
213 }
214
215 /* (non-Javadoc)
216 * @see org.mozilla.javascript.Scriptable#getDefaultValue(java.lang.Class)
217 */
218 public Object getDefaultValue(Class hint)
219 {
220 return null;
221 }
222
223 /* (non-Javadoc)
224 * @see org.mozilla.javascript.Scriptable#hasInstance(org.mozilla.javascript.Scriptable)
225 */
226 public boolean hasInstance(Scriptable value)
227 {
228 if (!(value instanceof Wrapper))
229 return false;
230 Object instance = ((Wrapper)value).unwrap();
231 return Map.class.isInstance(instance);
232 }
233
234 }