org.eclipse.fmc.blockdiagram.editor/src/org/eclipse/fmc/blockdiagram/editor/features/add/BraceAddFeature.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.fmc.blockdiagram.editor.algorithm.comment.BraceAlgorithm;
import org.eclipse.fmc.blockdiagram.editor.algorithm.comment.CommentAlgorithmFactory;
import org.eclipse.fmc.blockdiagram.editor.util.StyleUtil;
import org.eclipse.graphiti.features.IFeatureProvider;
import org.eclipse.graphiti.features.context.IAddContext;
import org.eclipse.graphiti.mm.algorithms.GraphicsAlgorithm;
import org.eclipse.graphiti.mm.algorithms.Rectangle;
import org.eclipse.graphiti.mm.pictograms.ContainerShape;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;

/**
 * This feature adds the graphical representation of a brace shape to the
 * diagram.
 * 
 * @author Rainer Thome
 * @author Benjamin Schmeling
 * @author Heiko Witteborg
 * 
 */
public class BraceAddFeature extends ShapeAddFeature {

	/**
	 * Brace algorithm to create the graphical representation.
	 */
	private BraceAlgorithm braceAlgorithm = CommentAlgorithmFactory.getInstance()
			.getBrace();

	/**
	 * 
	 * @param featureProvider
	 *            The feature provider.
	 */
	public BraceAddFeature(IFeatureProvider featureProvider) {
		super(featureProvider);
		super.minimumWidth = braceAlgorithm.getMinimumWidth();
		super.minimumHeight = braceAlgorithm.getMinimumHeight();
	}

	/**
	 * 
	 * @param featureProvider
	 *            The feature provider.
	 * @param linked
	 *            True if the pictogram element should be linked to a model
	 *            object.
	 */
	public BraceAddFeature(IFeatureProvider featureProvider, boolean linked) {
		super(featureProvider);
		super.minimumWidth = braceAlgorithm.getMinimumWidth();
		super.minimumHeight = braceAlgorithm.getMinimumHeight();
		super.linked = linked;
	}

	
	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * org.eclipse.fmc.blockdiagram.editor.features.add.ShapeAddFeature#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) {
		ContainerShape container = context.getTargetContainer();
		ContainerShape newContainer = pe.createContainerShape(container, true);

		Rectangle invRec = ga.createInvisibleRectangle(newContainer);
		invRec.setStyle(StyleUtil.getStyle(getDiagram(), StyleUtil.SHAPE));
		if (linked)
			link(newContainer, context.getNewObject());

		BraceAlgorithm algorithm = CommentAlgorithmFactory.getInstance()
				.getBrace();
		GraphicsAlgorithm secondLevelGa = algorithm.createGraphics(
				getDiagram(), invRec, context.getX(), context.getY(),
				getWidth(context), getHeight(context));

		secondLevelGa.setParentGraphicsAlgorithm(invRec);

		return newContainer;
	}

}