/**
* Copyright 2006 Webmedia Group Ltd.
*
* 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.araneaframework.uilib.event;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.araneaframework.InputData;
import org.araneaframework.core.EventListener;
import org.araneaframework.uilib.InvalidEventException;
/**
* This class manages all events. It is used by widgets to manage their events.
*
* @author <a href="mailto:ekabanov@webmedia.ee">Jevgeni Kabanov</a>
*
*/
public class StandardControlEventListenerAdapter implements EventListener {
private Collection onClickEventListeners = new ArrayList();
private Collection onChangeEventListeners = new ArrayList();
private Map generalWidgetEventListeners = new HashMap();
/**
* Adds a {@link OnChangeEventListener}which is called when the control value is changing.
*
* @param onChangeEventListener {@link OnChangeEventListener}which is called when the control value is changing.
*/
public void addOnChangeEventListener(OnChangeEventListener onChangeEventListener) {
onChangeEventListeners.add(onChangeEventListener);
}
/**
* Returns whether there are any {@link OnChangeEventListener}s registered.
*
* @return whether there are any {@link OnChangeEventListener}s registered.
*/
public boolean hasOnChangeEventListeners() {
return onChangeEventListeners.size() > 0;
}
/**
* Returns whether there are any {@link GeneralWidgetEventListener}s registered for the given event.
*
* @param eventName widget event.
*
* @return whether there are any {@link GeneralWidgetEventListener}s registered for the given event.
*/
public boolean hasGeneralWidgetEventListeners(String eventName) {
List listenerList = ((List) generalWidgetEventListeners.get(eventName));
return listenerList != null && listenerList.size() > 0;
}
/**
* Adds a {@link OnClickEventListener}which is called when the control is clicked.
*
* @param onClickEventListener {@link OnClickEventListener} which is called when the control is clicked.
*/
public void addOnClickEventListener(OnClickEventListener onClickEventListener) {
onClickEventListeners.add(onClickEventListener);
}
/**
* Returns whether there are any {@link OnClickEventListener}s registered.
*
* @return whether there are any {@link OnClickEventListener}s registered.
*/
public boolean hasOnClickEventListeners() {
return onClickEventListeners.size() > 0;
}
public void processEvent(Object eventId, InputData input) throws Exception {
if (OnChangeEventListener.ON_CHANGE_EVENT.equals(eventId)) {
for (Iterator i = onChangeEventListeners.iterator(); i.hasNext();) {
((OnChangeEventListener) i.next()).onChange();
}
}
else if (OnClickEventListener.ON_CLICK_EVENT.equals(eventId)) {
for (Iterator i = onClickEventListeners.iterator(); i.hasNext();) {
((OnClickEventListener) i.next()).onClick();
}
}
else {
throw new InvalidEventException((String) eventId);
}
}
}