package org.activityinfo.ui.client.page.report;
/*
* #%L
* ActivityInfo Server
* %%
* Copyright (C) 2009 - 2013 UNICEF
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
import com.extjs.gxt.ui.client.event.Listener;
import org.activityinfo.ui.client.EventBus;
public class ReportEventBus {
private EventBus eventBus;
private HasReportElement source;
private Listener<ReportChangeEvent> innerListener;
public ReportEventBus(final EventBus eventBus, final HasReportElement source) {
this.eventBus = eventBus;
this.source = source;
}
public void fireChange() {
eventBus.fireEvent(new ReportChangeEvent(source, source.getModel()));
}
public void listen(final ReportChangeHandler handler) {
innerListener = new Listener<ReportChangeEvent>() {
@Override
public void handleEvent(ReportChangeEvent be) {
if (be.getModel() == source.getModel() && be.getSource() != source) {
handler.onChanged();
}
}
};
eventBus.addListener(ReportChangeEvent.TYPE, innerListener);
}
public void disconnect() {
if (innerListener != null) {
eventBus.removeListener(ReportChangeEvent.TYPE, innerListener);
}
}
}