ChoreographyAddFeature.java

/******************************************************************************* 
 * Copyright (c) 2011 Red Hat, Inc. 
 *  All rights reserved. 
 * This program is 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: 
 * Red Hat, Inc. - initial API and implementation 
 ******************************************************************************/
package org.eclipse.bpmn2.modeler.ui.features.choreography;

import static org.eclipse.bpmn2.modeler.core.features.choreography.ChoreographyProperties.INITIATING_PARTICIPANT_REF;
import static org.eclipse.bpmn2.modeler.core.features.choreography.ChoreographyProperties.MESSAGE_REF_IDS;
import static org.eclipse.bpmn2.modeler.core.features.choreography.ChoreographyProperties.PARTICIPANT_REF_IDS;
import static org.eclipse.bpmn2.modeler.core.features.choreography.ChoreographyProperties.R;
import static org.eclipse.bpmn2.modeler.core.features.choreography.ChoreographyProperties.TEXT_H;
import static org.eclipse.bpmn2.modeler.ui.features.choreography.ChoreographyUtil.drawMultiplicityMarkers;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.eclipse.bpmn2.ChoreographyActivity;
import org.eclipse.bpmn2.ChoreographyTask;
import org.eclipse.bpmn2.Participant;
import org.eclipse.bpmn2.di.BPMNShape;
import org.eclipse.bpmn2.di.ParticipantBandKind;
import org.eclipse.bpmn2.modeler.core.Activator;
import org.eclipse.bpmn2.modeler.core.ModelHandler;
import org.eclipse.bpmn2.modeler.core.di.DIImport;
import org.eclipse.bpmn2.modeler.core.features.AbstractBpmnAddFeature;
import org.eclipse.bpmn2.modeler.core.features.choreography.ChoreographyProperties;
import org.eclipse.bpmn2.modeler.core.utils.AnchorUtil;
import org.eclipse.bpmn2.modeler.core.utils.StyleUtil;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.mm.algorithms.RoundedRectangle;
import org.eclipse.graphiti.mm.algorithms.Text;
import org.eclipse.graphiti.mm.algorithms.styles.Orientation;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.mm.pictograms.Shape;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.graphiti.services.IGaService;
import org.eclipse.graphiti.services.IPeService;

public class ChoreographyAddFeature extends AbstractBpmnAddFeature {

	protected final IGaService gaService = Graphiti.getGaService();
	protected final IPeService peService = Graphiti.getPeService();

	public ChoreographyAddFeature(IFeatureProvider fp) {
		super(fp);
	}

	@Override
	public boolean canAdd(IAddContext context) {
		return context.getTargetContainer().equals(getDiagram());
	}

	@Override
	public PictogramElement add(IAddContext context) {
		ChoreographyActivity choreography = (ChoreographyActivity) context.getNewObject();

		int width = context.getWidth() > 0 ? context.getWidth() : 150;
		int height = context.getHeight() > 0 ? context.getHeight() : 150;

		ContainerShape choreographyContainer = peService.createContainerShape(context.getTargetContainer(), true);
		RoundedRectangle containerRect = gaService.createRoundedRectangle(choreographyContainer, R, R);
		gaService.setLocationAndSize(containerRect, context.getX(), context.getY(), width, height);
		StyleUtil.applyBGStyle(containerRect, this);
		decorateContainerRect(containerRect);

		Object importProperty = context.getProperty(DIImport.IMPORT_PROPERTY);
		if (importProperty != null && (Boolean) importProperty) {
			addedFromImport(choreography, choreographyContainer, context);
		}

		Shape nameShape = peService.createShape(choreographyContainer, false);

		Text text = gaService.createDefaultText(getDiagram(), nameShape);
		text.setValue(choreography.getName());
		text.setStyle(StyleUtil.getStyleForText(getDiagram()));
		text.setHorizontalAlignment(Orientation.ALIGNMENT_CENTER);
		text.setVerticalAlignment(Orientation.ALIGNMENT_TOP);
		text.getFont().setBold(false);
		setTextLocation(choreographyContainer, text, width, height);
		peService.setPropertyValue(nameShape, ChoreographyProperties.CHOREOGRAPHY_NAME, Boolean.toString(true));

		// use it when property editor supports enums
		// ContainerShape markerShape = peService.createContainerShape(choreographyContainer, false);
		// Rectangle markerRectangle = gaService.createInvisibleRectangle(markerShape);
		// List<ContainerShape> bands = ChoreographyUtil.getParticipantBandContainerShapes(choreographyContainer);
		// List<ContainerShape> bottomBands = ChoreographyUtil.getTopAndBottomBands(bands).getSecond();
		// int x = (width / 2) - (MARKER_H / 2);
		// int y = height - MARKER_H;
		// if (!bottomBands.isEmpty()) {
		// ContainerShape b = bottomBands.get(0);
		// y = b.getGraphicsAlgorithm().getY() - MARKER_H;
		// }
		// gaService.setLocationAndSize(markerRectangle, x, y, MARKER_H, MARKER_H);
		// ChoreographyUtil.drawChoreographyLoopType(markerShape, choreography.getLoopType());
		//
		// String loopType = choreography.getLoopType() == null ? "null" : choreography.getLoopType().getName();
		// peService.setPropertyValue(choreographyContainer, ChoreographyProperties.CHOREOGRAPHY_MARKER, loopType);
		//
		// peService.setPropertyValue(markerShape, ChoreographyProperties.CHOREOGRAPHY_MARKER_SHAPE,
		// Boolean.toString(true));

		if (choreography instanceof ChoreographyTask) {
			peService.setPropertyValue(choreographyContainer, MESSAGE_REF_IDS,
					ChoreographyUtil.getMessageRefIds((ChoreographyTask) choreography));
		}

		peService.createChopboxAnchor(choreographyContainer);
		createDIShape(choreographyContainer, choreography);
		AnchorUtil.addFixedPointAnchors(choreographyContainer, containerRect);
		ChoreographyUtil.drawMessageLinks(choreographyContainer);
		return choreographyContainer;
	}

	protected void decorateContainerRect(RoundedRectangle containerRect) {
	}

	protected void addedFromImport(ChoreographyActivity choreography, ContainerShape choreographyContainer,
			IAddContext context) {
		ModelHandler mh = null;

		try {
			mh = ModelHandler.getInstance(getDiagram());
		} catch (IOException e) {
			Activator.logError(e);
			return;
		}

		List<Participant> participants = choreography.getParticipantRefs();
		List<BPMNShape> shapes = mh.getAll(BPMNShape.class);
		List<BPMNShape> filteredShapes = new ArrayList<BPMNShape>();
		BPMNShape choreoBpmnShape = null;

		for (BPMNShape shape : shapes) {
			if (shape.getBpmnElement().equals(choreography)) {
				choreoBpmnShape = shape;
				break;
			}
		}

		for (BPMNShape shape : shapes) {
			if (participants.contains(shape.getBpmnElement())
					&& choreoBpmnShape.equals(shape.getChoreographyActivityShape())) {
				filteredShapes.add(shape);
			}
		}

		for (BPMNShape bpmnShape : filteredShapes) {
			ParticipantBandKind bandKind = bpmnShape.getParticipantBandKind();
			ContainerShape createdShape = ChoreographyUtil.createParticipantBandContainerShape(bandKind,
					choreographyContainer, bpmnShape, isShowNames());
			createDIShape(createdShape, bpmnShape.getBpmnElement(), bpmnShape);
			Participant p = (Participant) bpmnShape.getBpmnElement();
			if (p.getParticipantMultiplicity() != null && p.getParticipantMultiplicity().getMaximum() > 1) {
				drawMultiplicityMarkers(createdShape);
			}
		}

		peService.setPropertyValue(choreographyContainer, PARTICIPANT_REF_IDS,
				ChoreographyUtil.getParticipantRefIds(choreography));
		Participant initiatingParticipant = choreography.getInitiatingParticipantRef();
		String id = initiatingParticipant == null ? "null" : initiatingParticipant.getId();
		peService.setPropertyValue(choreographyContainer, INITIATING_PARTICIPANT_REF, id);
	}

	protected void setTextLocation(ContainerShape choreographyContainer, Text text, int w, int h) {
		int y = (h / 2) - (TEXT_H / 2);
		gaService.setLocationAndSize(text, 0, y, w, TEXT_H);
	}

	protected boolean isShowNames() {
		return true;
	}
}