StopSortableAjaxBehavior.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 ro.nextreports.server.web.pivot;

import org.apache.wicket.ajax.AbstractDefaultAjaxBehavior;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.attributes.AjaxRequestAttributes;
import org.odlabs.wiquery.core.javascript.JsScopeContext;
import org.odlabs.wiquery.ui.core.JsScopeUiEvent;
import org.odlabs.wiquery.ui.sortable.SortableBehavior;

import com.google.gson.Gson;

/**
 * @author Decebal Suiu
 */
public abstract class StopSortableAjaxBehavior extends AbstractDefaultAjaxBehavior {

	private static final long serialVersionUID = 1L;

	/** Sorted identifiant into the request */
	private static final String JSON_DATA = "data";
	
	private SortableBehavior sortableBehavior;
	
	public StopSortableAjaxBehavior() {
		super();
		
		this.sortableBehavior = new SortableBehavior();
	}

	public SortableBehavior getSortableBehavior() {
		return sortableBehavior;
	}

	public abstract void onStop(Item[] items, AjaxRequestTarget target);
	
	@Override
	protected void updateAjaxAttributes(AjaxRequestAttributes attributes) {
		super.updateAjaxAttributes(attributes);
		
		String areasId = getComponent().findParent(PivotPanel.class).get("areas").getMarkupId();
		
		StringBuilder javaScript = new StringBuilder();
		javaScript.append("var data = onStopFieldMove(\"" + areasId + "\");");
		javaScript.append("return { '" + JSON_DATA + "': data }"); 

		attributes.getDynamicExtraParameters().add(javaScript);
	}

	@Override
	protected void onBind() {
		getComponent().add(sortableBehavior);
		sortableBehavior.setStopEvent(new JsScopeUiEvent() {

			private static final long serialVersionUID = 1L;

			@Override
			protected void execute(JsScopeContext scopeContext) {
				scopeContext.append(getCallbackFunctionBody());
			}
			
		});
	}

	@Override
	protected void respond(AjaxRequestTarget target) {
		String jsonData = getComponent().getRequest().getRequestParameters().getParameterValue(JSON_DATA).toString();
		Item[] items = getItems(jsonData);
		onStop(items, target);
	}

	private Item[] getItems(String jsonData) {
		Gson gson = new Gson();
		Item[] items = gson.fromJson(jsonData, Item[].class);
		/*
		System.out.println(items.length);
		for (Item item : items) {
			System.out.println(item);
		}
		*/
		
		return items;
	}
		
	public static class Item {
				
		public String areaName;
		public int fieldIndex;
		public int sortIndex;
		
		@Override
		public String toString() {
			StringBuffer buffer = new StringBuffer();
			buffer.append("Item[");
			buffer.append("areaName = ").append(areaName);
			buffer.append(" fieldIndex = ").append(fieldIndex);
			buffer.append(" sortIndex = ").append(sortIndex);
			buffer.append("]");

			return buffer.toString();
		}

	}
			
}