org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/features/add/ImageAddFeature.java

/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2013, 2013 SAP AG.
 * 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:
 *    SAP AG - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.fmc.blockdiagram.editor.features.add;

import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.features.impl.AbstractAddShapeFeature;
import org.eclipse.graphiti.mm.algorithms.Image;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.graphiti.services.IGaService;
import org.eclipse.graphiti.services.IPeService;
import org.eclipse.graphiti.ui.services.GraphitiUi;
import org.eclipse.swt.graphics.Rectangle;

/**
 * This feature is responsible to add an image to the diagram.
 * 
 * @author Benjamin Schmeling
 * 
 */
public class ImageAddFeature extends AbstractAddShapeFeature {

	/**
	 * The id of the image.
	 */
	protected String imageId;

	/**
	 * Constructor.
	 * 
	 * @param featureProvider
	 *            The feature provider.
	 * @param imageId
	 *            The id of the image (registered at the image provider).
	 */
	public ImageAddFeature(IFeatureProvider featureProvider, String imageId) {
		super(featureProvider);
		this.imageId = imageId;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.graphiti.func.IAdd#canAdd(org.eclipse.graphiti.features.context
	 * .IAddContext)
	 */
	@Override
	public boolean canAdd(IAddContext context) {
		return true;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.graphiti.func.IAdd#add(org.eclipse.graphiti.features.context
	 * .IAddContext)
	 */
	@Override
	public PictogramElement add(IAddContext context) {
		IGaService gaService = Graphiti.getGaService();
		IPeService peService = Graphiti.getPeService();

		ContainerShape parent = context.getTargetContainer();

		ContainerShape newShape;

		newShape = peService.createContainerShape(parent, true);
		Rectangle imageBounds = GraphitiUi.getImageService()
				.getImageForId(getFeatureProvider().getDiagramTypeProvider().getProviderId(), imageId).getBounds();
		Image image = gaService.createImage(newShape, imageId);
		image.setId(imageId);
		image.setStretchH(true);
		image.setStretchV(true);
		gaService.setLocationAndSize(image, context.getX(), context.getY(),
				imageBounds.width, imageBounds.height);

		link(newShape, context.getNewObject());

		layoutPictogramElement(newShape);

		return newShape;
	}

}