/*
 * Copyright (c) 2013, IETR/INSA of Rennes
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *   * Neither the name of the IETR/INSA of Rennes nor the names of its
 *     contributors may be used to endorse or promote products derived from this
 *     software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
package net.sf.orcc.xdf.ui.editors;

import org.eclipse.emf.common.util.URI;
import org.eclipse.graphiti.ui.editor.DiagramEditorInput;
import org.eclipse.ui.part.FileEditorInput;

/**
 * This class implements a customized EditorInput. It inherits default
 * DiagramEditorInput but override the {@link #equals(Object)} method to ensure
 * the same tab will always be reused when a user open a network or a diagram
 * file (*.xdf or *.diag).
 * 
 * @author Antoine Lorence
 * 
 */
public class XdfEditorInput extends DiagramEditorInput {

	public XdfEditorInput(URI diagramUri, String providerId) {
		super(diagramUri, providerId);
	}

	@Override
	public boolean equals(Object obj) {
		if (super.equals(obj)) {
			return true;
		}

		final URI otherURI;
		if (obj instanceof FileEditorInput) {
			otherURI = URI.createPlatformResourceURI(((FileEditorInput) obj).getFile().getFullPath().toString(), true);
		} else if (obj instanceof DiagramEditorInput) {
			otherURI = ((DiagramEditorInput) obj).getUri();
		} else {
			return false;
		}

		return getUri().trimFileExtension().trimFragment().equals(otherURI.trimFileExtension().trimFragment());
	}

}