org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/features/TextDirectEditingFeature.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;

import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IDirectEditingContext;
import org.eclipse.graphiti.features.impl.AbstractDirectEditingFeature;
import org.eclipse.graphiti.func.IDirectEditing;
import org.eclipse.graphiti.mm.algorithms.AbstractText;

/**
 * 
 * @author Benjamin Schmeling
 * 
 */
public class TextDirectEditingFeature extends AbstractDirectEditingFeature {

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

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.graphiti.func.IDirectEditing#getEditingType()
	 */
	@Override
	public int getEditingType() {
		return IDirectEditing.TYPE_MULTILINETEXT;
	}

	/**
	 * If the selected element is a text, this method will return it, otherwise
	 * null.
	 * 
	 * @param context
	 *            The direct editing context.
	 * 
	 * @return The text if one was selected, otherwise null.
	 */
	protected AbstractText getText(IDirectEditingContext context) {
		if (context.getGraphicsAlgorithm() instanceof AbstractText)
			return (AbstractText) context.getGraphicsAlgorithm();
		else
			return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.graphiti.func.IDirectEditing#getInitialValue(org.eclipse.
	 * graphiti.features.context.IDirectEditingContext)
	 */
	@Override
	public String getInitialValue(IDirectEditingContext context) {
		AbstractText text = getText(context);
		if (text != null) {
			return text.getValue();
		} else
			return "";
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.graphiti.features.impl.AbstractDirectEditingFeature#setValue
	 * (java.lang.String,
	 * org.eclipse.graphiti.features.context.IDirectEditingContext)
	 */
	@Override
	public void setValue(String value, IDirectEditingContext context) {
		AbstractText text = getText(context);
		if (text != null) {
			text.setValue(value);
		}
	}

}