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/*****************************************************************************
 * Copyright (c) 2012 CEA LIST.
 *
 *    
 * 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
 *
 *****************************************************************************/
package org.eclipse.papyrus.uml.diagram.timing.custom.edit.commands;

import org.eclipse.draw2d.IFigure;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.gef.RootEditPart;
import org.eclipse.gef.commands.Command;
import org.eclipse.papyrus.infra.gmfdiag.common.helper.DiagramHelper;

/**
 * Refresh the {@link IFigure} of a given {@link GraphicalEditPart}.
 */
public abstract class AbstractRefreshCommand extends Command {

	private final GraphicalEditPart editPartToRefresh;
	private final RootEditPart rootEditPart;

	public AbstractRefreshCommand(final GraphicalEditPart editPartToRefresh) {
		this.editPartToRefresh = editPartToRefresh;
		this.rootEditPart = editPartToRefresh.getRoot();
	}

	public GraphicalEditPart getEditPartToRefresh() {
		return this.editPartToRefresh;
	}

	protected void refresh() {
		if (this.editPartToRefresh.isActive()) {
			DiagramHelper.refresh(this.editPartToRefresh, true);
			// this is needed in order to update the bounds of the Figures from their layout manager constraints
			this.editPartToRefresh.getFigure().invalidateTree();
		} else if (this.rootEditPart.isActive()) {
			/*
			 * If the EditPart we needed to refresh is not active anymore, then it probably means that we undid its
			 * creation, and re-created the object as part of a redo, with a different EditPart. In this case, just
			 * refresh everything.
			 */
			DiagramHelper.refresh(this.rootEditPart, true);
		}
	}
}

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