1 /*
2 * Copyright 2010 Daniel Kurka
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14 package com.googlecode.mgwt.collection.client;
15
16 import com.google.gwt.core.client.JavaScriptObject;
17 import com.googlecode.mgwt.collection.shared.LightArray;
18
19 /**
20 * This is a the javascript implementation of {@link LightArray}, which makes direct use of native
21 * javascript arrays
22 *
23 * @author Daniel Kurka
24 *
25 * @param <T> the Type of the object to put into the array
26 */
27 public class JsLightArray<T> implements LightArray<T> {
28
29 private JavaScriptObject array;
30
31 /**
32 * Construct a {@link JsLightArray}
33 */
34 public JsLightArray() {
35 this(JavaScriptObject.createArray());
36 }
37
38 /**
39 * Construct a {@link JsLightArray} with a given javascript array
40 *
41 * @param array the array to use
42 */
43 public JsLightArray(JavaScriptObject array) {
44 this.array = array;
45 }
46
47 @Override
48 public native T get(int index) /*-{
49 return this.@com.googlecode.mgwt.collection.client.JsLightArray::array[index];
50 }-*/;
51
52 /**
53 * returns the underlying javascript array
54 *
55 * @return the javascript array
56 */
57 public JavaScriptObject getArray() {
58 return array;
59 }
60
61 @Override
62 public native int length()/*-{
63 return this.@com.googlecode.mgwt.collection.client.JsLightArray::array.length;
64 }-*/;
65
66 @Override
67 public native void push(T value)/*-{
68 this.@com.googlecode.mgwt.collection.client.JsLightArray::array[this.@com.googlecode.mgwt.collection.client.JsLightArray::array.length] = value;
69 }-*/;
70
71 @Override
72 public native void set(int index, T value) /*-{
73 this.@com.googlecode.mgwt.collection.client.JsLightArray::array[index] = value;
74 }-*/;
75
76 @Override
77 public native T shift() /*-{
78 return this.@com.googlecode.mgwt.collection.client.JsLightArray::array.shift();
79 }-*/;
80
81 @Override
82 public native void unshift(T value)/*-{
83 this.@com.googlecode.mgwt.collection.client.JsLightArray::array.unshift(value);
84 }-*/;
85
86 }