/*
* Copyright 2006 the original author or authors.
*
* 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 org.springmodules.xt.ajax.action.prototype.scriptaculous;
import java.util.HashMap;
import java.util.Map;
import net.sf.json.JSONObject;
import org.springmodules.xt.ajax.action.AbstractExecuteJavascriptAction;
/**
* Ajax action for making a new Scriptaculous draggable element (see http://wiki.script.aculo.us/scriptaculous/show/Draggable).<br>
* This action uses the Prototype Javascript library and the Scriptaculous Drag and Drop Javascript library, so you need to include them in your web pages.
*
* @author Sergio Bossa
*/
public class Draggable extends AbstractExecuteJavascriptAction {
private static final long serialVersionUID = 26L;
private String elementId;
private Map<String, Object> options = new HashMap<String, Object>();
/**
* Construct a Scriptaculous draggable element.<br>
*
* @param elementId The id of the element.
*/
public Draggable(String elementId) {
this.elementId = elementId;
}
/**
* Add an optional parameter to this effect, in the form of key/value pair.<br>
*
* @param key The key of the option (<b>case-sensitive</b>).
* @param value The value of the option.
*/
public void addOption(String key, Object value) {
this.options.put(key, value);
}
protected String getJavascript() {
StringBuilder effect = new StringBuilder("new Draggable");
effect.append("(");
effect.append("\"").append(this.elementId).append("\"");
if (!this.options.isEmpty()) {
JSONObject json = JSONObject.fromMap(this.options);
effect.append(",").append(json.toString());
}
effect.append(");");
return effect.toString();
}
}