AddTaskFeature.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.core.features.activity.task;

import org.eclipse.bpmn2.Activity;
import org.eclipse.bpmn2.FlowElementsContainer;
import org.eclipse.bpmn2.modeler.core.features.BusinessObjectUtil;
import org.eclipse.bpmn2.modeler.core.features.activity.AbstractAddActivityFeature;
import org.eclipse.bpmn2.modeler.core.utils.GraphicsUtil;
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.MultiText;
import org.eclipse.graphiti.mm.algorithms.styles.Orientation;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
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 AddTaskFeature extends AbstractAddActivityFeature {

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

	@Override
	public boolean canAdd(IAddContext context) {
		return super.canAdd(context)
		        || BusinessObjectUtil.containsElementOfType(context.getTargetContainer(), FlowElementsContainer.class);
	}

	@Override
	protected void hook(Activity activity, ContainerShape container, IAddContext context, int width, int height) {
		IPeService peService = Graphiti.getPeService();
		IGaService gaService = Graphiti.getGaService();

		Shape textShape = peService.createShape(container, false);
		MultiText text = gaService.createDefaultMultiText(getDiagram(), textShape, activity.getName());
		int padding = GraphicsUtil.TASK_IMAGE_SIZE;
		gaService.setLocationAndSize(text, 0, padding, width, height - padding);
		text.setStyle(StyleUtil.getStyleForText(getDiagram()));
		text.setHorizontalAlignment(Orientation.ALIGNMENT_CENTER);
		text.setVerticalAlignment(Orientation.ALIGNMENT_TOP);
		text.getFont().setBold(true);
		link(textShape, activity);
	}

	@Override
	protected int getWidth() {
		return GraphicsUtil.TASK_DEFAULT_WIDTH;
	}

	@Override
	protected int getHeight() {
		return GraphicsUtil.TASK_DEFAULT_HEIGHT;
	}
}