/*
* Copyright 2008 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.visualization.client;
import com.google.gwt.ajaxloader.client.AjaxLoader;
import com.google.gwt.ajaxloader.client.ArrayHelper;
import com.google.gwt.ajaxloader.client.AjaxLoader.AjaxLoaderOptions;
import com.google.gwt.core.client.JsArrayString;
/**
* This class contains utility methods that are of use to the API in general.
* Incldes a wrapper for loading the Visualization API using the google Ajax loader.
*/
public class VisualizationUtils {
public static void loadVisualizationApi(Runnable onLoad, String... packages) {
loadVisualizationApi("1", onLoad, ArrayHelper.toJsArrayString(packages));
}
public static void loadVisualizationApi(String version, Runnable onLoad,
JsArrayString packages) {
// TODO: map which packages have already been loaded, so that we can
// call the loader only when necessary
AjaxLoaderOptions options = AjaxLoaderOptions.newInstance();
options.setPackages(packages);
AjaxLoader.loadApi("visualization", version, onLoad, options);
}
public static void loadVisualizationApi(String version, Runnable onLoad,
String... packages) {
loadVisualizationApi(version, onLoad, ArrayHelper.toJsArrayString(packages));
}
private VisualizationUtils() {
// Do not allow this class to be instantiated.
}
}