org.eclipse.osbp.runtime.web.ecview.presentation.vaadin/src/org/eclipse/osbp/runtime/web/ecview/presentation/vaadin/internal/services/WidgetMouseClickService.java

/**
 * Copyright (c) 2011, 2015 - Lunifera GmbH (Gross Enzersdorf, Austria), Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0 
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *         Florian Pirchner - Initial implementation
 */
package org.eclipse.osbp.runtime.web.ecview.presentation.vaadin.internal.services;

import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.eclipse.osbp.ecview.core.common.context.IViewContext;
import org.eclipse.osbp.ecview.core.common.model.core.YEmbeddable;
import org.eclipse.osbp.ecview.core.common.services.IWidgetAssocationsService;
import org.eclipse.osbp.ecview.core.common.tooling.IWidgetMouseClickService;
import org.eclipse.osbp.runtime.common.event.IEventBroker;

import com.vaadin.event.LayoutEvents;
import com.vaadin.event.LayoutEvents.LayoutClickEvent;
import com.vaadin.event.LayoutEvents.LayoutClickListener;
import com.vaadin.event.LayoutEvents.LayoutClickNotifier;
import com.vaadin.ui.Component;
import com.vaadin.ui.Panel;

@SuppressWarnings("serial")
public class WidgetMouseClickService implements IWidgetMouseClickService,
		LayoutClickListener {

	private Set<Listener> listeners = Collections
			.synchronizedSet(new HashSet<IWidgetMouseClickService.Listener>());
	private IWidgetAssocationsService<Component, YEmbeddable> associations;
	private IViewContext context;
	private LayoutClickNotifier widget;
	private IEventBroker eventBroker;

	public WidgetMouseClickService(IViewContext context) {
		this.context = context;
		this.associations = context.getService(IWidgetAssocationsService.ID);
		this.eventBroker = context.getService(IEventBroker.class.getName());
	}

	@Override
	public void addListener(Listener listener) {
		listeners.add(listener);
	}

	@Override
	public void removeListener(Listener listener) {
		listeners.remove(listener);
	}

	@Override
	public void activate() {
		Panel panel = (Panel) context.getViewEditpart().getPresentation()
				.getWidget();
		widget = (LayoutEvents.LayoutClickNotifier) panel.getContent();
		widget.addLayoutClickListener(this);
	}

	@Override
	public void dactivate() {
		if (widget != null) {
			widget.removeLayoutClickListener(this);
			widget = null;
		}
	}

	@Override
	public void layoutClick(LayoutClickEvent event) {
		synchronized (listeners) {
			Object model = associations.getModelElement(event
					.getClickedComponent());

			for (Listener listener : listeners) {
				listener.clicked(model);
			}

			if (eventBroker != null) {
				Map<String, Object> data = new HashMap<String, Object>();
				data.put(PROP_MODEL_ELEMENT, model);
				data.put(PROP_WIDGET, event.getChildComponent());
				eventBroker.send(IWidgetMouseClickService.EVENT_TOPIC, data);
			}
		}
	}

}