com.googlecode.gwtphonegap.collection.client.JsLightMap.java Source code

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Here is the source code for com.googlecode.gwtphonegap.collection.client.JsLightMap.java

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/*
 * Copyright 2010 Daniel Kurka
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.googlecode.gwtphonegap.collection.client;

import com.google.gwt.core.client.JavaScriptObject;
import com.googlecode.gwtphonegap.collection.shared.LightArray;
import com.googlecode.gwtphonegap.collection.shared.LightMap;

public class JsLightMap<V> implements LightMap<V> {
    private JavaScriptObject map;

    public JsLightMap() {
        this(JavaScriptObject.createObject());
    }

    public JsLightMap(JavaScriptObject data) {
        if (data == null) {
            throw new IllegalArgumentException("data must not be null");
        }
        this.map = data;
    }

    @Override
    public final void clear() {
        clearData();
    }

    private final native void clearData() /*-{
                                          this.@com.googlecode.gwtphonegap.collection.client.JsLightMap::map = {};
                                          }-*/;

    @Override
    public final native boolean containsKey(String key) /*-{
                                                        return (this.@com.googlecode.gwtphonegap.collection.client.JsLightMap::map)[key] != null;
                                                        }-*/;

    @Override
    public void remove(String key) {
        nativeDelete(key);
    }

    private native V nativeDelete(String key) /*-{
                                              delete (this.@com.googlecode.gwtphonegap.collection.client.JsLightMap::map)[key];
                                              }-*/;

    @Override
    public V get(String key) {
        return nativeGet(key);
    }

    private native V nativeGet(String key) /*-{
                                           return (this.@com.googlecode.gwtphonegap.collection.client.JsLightMap::map)[key];
                                           }-*/;

    @Override
    public void put(String key, V value) {
        nativePut(key, value);

    }

    private native V nativePut(String key, V value) /*-{
                                                    (this.@com.googlecode.gwtphonegap.collection.client.JsLightMap::map)[key] = value;
                                                    }-*/;

    @Override
    public LightArray<String> getKeys() {
        JavaScriptObject array = getNativeKeyArray();
        return new JsLightArray<String>(array);
    }

    private native JavaScriptObject getNativeKeyArray()/*-{
                                                       var array = [];
                                                       for ( var key in this.@com.googlecode.gwtphonegap.collection.client.JsLightMap::map) {
                                                       array.push(key);
                                                       }
                                                       return array;
                                                       }-*/;

    public JavaScriptObject getMap() {
        return map;
    }

}