com.google.gwt.coreext.client.DataBag.java Source code

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Here is the source code for com.google.gwt.coreext.client.DataBag.java

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/*
 * Copyright 2010 Google Inc.
 * 
 * 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.google.gwt.coreext.client;

import com.google.gwt.core.client.JavaScriptObject;

/**
 * DataBag is a utility class to access {@link JavaScriptObject} fields Any JSO
 * can be casted to a DataBag, or you can use it statically.
 */
public class DataBag extends JavaScriptObject {
    /**
     * Callback for iterating through fields. Warning all contents of DataBag
     * are coerced to String.
     */
    public interface IterationCallback {
        void onIteration(String key, String value);
    }

    /*
     * Static Accessors
     */
    public static final native boolean getBooleanProperty(JavaScriptObject obj, String prop) /*-{
                                                                                             return !!obj[prop];
                                                                                             }-*/;

    public static final native double getDoubleProperty(JavaScriptObject obj, String prop) /*-{
                                                                                           return obj[prop];
                                                                                           }-*/;

    public static final native int getIntProperty(JavaScriptObject obj, String prop) /*-{
                                                                                     return obj[prop];
                                                                                     }-*/;

    public static final native <T extends JavaScriptObject> T getJSObjectProperty(JavaScriptObject obj,
            String prop) /*-{
                         return obj[prop];
                         }-*/;

    public static final native String getStringProperty(JavaScriptObject obj, String prop) /*-{
                                                                                           return obj[prop];
                                                                                           }-*/;

    public static final native boolean hasOwnProperty(JavaScriptObject obj, String prop) /*-{
                                                                                         return obj.hasOwnProperty(prop);
                                                                                         }-*/;

    protected DataBag() {
    }

    public final native boolean getBooleanProperty(String prop) /*-{
                                                                return !!this[prop];
                                                                }-*/;

    public final native double getDoubleProperty(String prop) /*-{
                                                              return this[prop];
                                                              }-*/;

    public final native int getIntProperty(String prop) /*-{
                                                        return this[prop];
                                                        }-*/;

    public final native <T extends JavaScriptObject> T getJSObjectProperty(String prop) /*-{
                                                                                        return this[prop];
                                                                                        }-*/;

    public final native String getStringProperty(String prop) /*-{
                                                              return this[prop];
                                                              }-*/;

    public final native boolean hasOwnProperty(String prop) /*-{
                                                            return this.hasOwnProperty(prop);
                                                            }-*/;

    public final native void iterate(IterationCallback callback) /*-{
                                                                 for (key in this) {
                                                                 if (this.hasOwnProperty(key)) {
                                                                 callback.@com.google.gwt.coreext.client.DataBag.IterationCallback::onIteration(Ljava/lang/String;Ljava/lang/String;)
                                                                 (key, this[key] + "");
                                                                 }
                                                                 }
                                                                 }-*/;
}