org.eclipse.osbp.utils.ui/src/org/eclipse/osbp/utils/vaadin/bpmn/BpmnView.java

/**
 *                                                                            
 *  Copyright (c) 2011, 2016 - 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 v1.0       
 *  which accompanies this distribution, and is available at                  
 *  http://www.eclipse.org/legal/epl-v10.html                                 
 *                                                                            
 *  Contributors:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 */
 package org.eclipse.osbp.utils.vaadin.bpmn;

import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.inject.Named;

import org.eclipse.e4.core.contexts.IEclipseContext;
import org.eclipse.e4.core.di.annotations.Optional;
import org.eclipse.e4.ui.model.application.MApplication;
import org.eclipse.e4.ui.model.application.ui.basic.MPart;
import org.eclipse.e4.ui.model.application.ui.impl.UIElementImpl;
import org.eclipse.e4.ui.model.application.ui.impl.UiPackageImpl;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.AdapterImpl;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.osbp.bpm.api.IBPMEngine;
import org.eclipse.osbp.bpm.api.IBlipBPMFunctionProvider;
import org.slf4j.Logger;

import com.vaadin.server.Page;
import com.vaadin.server.Page.BrowserWindowResizeEvent;
import com.vaadin.server.Page.BrowserWindowResizeListener;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

@SuppressWarnings("all")
public class BpmnView {
	private static Logger log = org.slf4j.LoggerFactory
			.getLogger(BpmnView.class);

	private HorizontalLayout lowerArea;

	@Inject
	@Optional
	private IBPMEngine bpmEngine;

	@Inject
	@Named("Blip")
	private IBlipBPMFunctionProvider blip;

	private VerticalLayout workArea;

	private BpmnRenderer bpmnRenderer;
	
	private String processId;

	private VerticalLayout parent;

	private IEclipseContext eclipseContext;

	@Inject
	public BpmnView(final VerticalLayout parent, final IEclipseContext context,
			final MApplication app) {
		this.parent = parent;
		this.eclipseContext = context;
	}

	@PostConstruct
	public void createView(final VerticalLayout parent) {
		parent.setPrimaryStyleName("osbp");
		bpmnRenderer = new BpmnRenderer(bpmEngine, blip, eclipseContext);
		
		VerticalLayout inner = new VerticalLayout();
		inner.setMargin(false);
		inner.setSizeFull();
		inner.setPrimaryStyleName("osbp");
		inner.addComponent(bpmnRenderer);

		// to resize the chart according to browser
	    Page.getCurrent().addBrowserWindowResizeListener(new BrowserWindowResizeListener() {
	    	@Override
	    	public void browserWindowResized(BrowserWindowResizeEvent event) {
	    		log.debug("browserWindowResized - redraw bpmn");
    			showBpmn(processId);
	    	}
	    });
	    // to resize the chart according to split positions of partsashcontainer - setContainerData is tracked
	    MPart part = eclipseContext.get(MPart.class);
	    ((EObject)part).eAdapters().add(new AdapterImpl() {
	    	public void notifyChanged(Notification notification) {
	    		if (notification.getEventType()==Notification.SET && 
	    				notification.getFeatureID(UIElementImpl.class) == UiPackageImpl.UI_ELEMENT__CONTAINER_DATA)
	    		{
	    			log.debug("split position changed - redraw bpmn");
	    			showBpmn(processId);
	    		}
	    	}
	    });
	}
	public void showBpmn(String processId) {
		this.processId = processId;
		UI.getCurrent().access(new Runnable() {
			@Override
			public void run() {
				bpmnRenderer.drawBpmn(processId);
			}
		});
	}
	
	public void selectTask(String taskName) {
		bpmnRenderer.setSelectedCell(taskName);		
	}
}