org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/features/custom/AddTextToConnectionCustomFeature.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.custom;

import org.eclipse.fmc.blockdiagram.editor.BlockDiagramMessages;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.ICustomContext;
import org.eclipse.graphiti.mm.algorithms.Text;
import org.eclipse.graphiti.mm.pictograms.Connection;
import org.eclipse.graphiti.mm.pictograms.ConnectionDecorator;
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;

/**
 * This features adds a text to a connection. This is for example necessary if
 * the user has removed the text previously.
 * 
 * @author Benjamin Schmeling
 * 
 */
public class AddTextToConnectionCustomFeature extends FMCCustomFeature {

	/**
	 * The default constructor.
	 * 
	 * @param featureProvider
	 *            The feature provider.
	 */
	public AddTextToConnectionCustomFeature(IFeatureProvider featureProvider) {
		super(featureProvider);
	}

	
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.graphiti.features.custom.ICustomFeature#execute(org.eclipse
	 * .graphiti.features.context.ICustomContext)
	 */
	@Override
	public void execute(ICustomContext context) {
		IGaService ga = Graphiti.getGaService();
		IPeService pe = Graphiti.getPeService();
		for (PictogramElement element : context.getPictogramElements()) {
			Connection con = (Connection) element;
			ConnectionDecorator letter = pe.createConnectionDecorator(con,
					true, 0.4f, true);
			Text txt = ga.createText(letter,
					BlockDiagramMessages.FMCAddFeature_DefaultShapeTitle);
			txt.setForeground(ga.manageColor(getDiagram(), 0, 0, 0));
			ga.setLocation(txt, -8, 22);
		}
	}

	
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.graphiti.features.custom.AbstractCustomFeature#canExecute
	 * (org.eclipse.graphiti.features.context.ICustomContext)
	 */
	@Override
	public boolean canExecute(ICustomContext context) {
		if (context.getPictogramElements().length == 0)
			return false;
		for (PictogramElement element : context.getPictogramElements()) {
			if (!(element instanceof Connection))
				return false;
		}
		return true;
	}

	
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.graphiti.features.impl.AbstractFeature#getName()
	 */
	@Override
	public String getName() {
		return "Add Text";
	}

}