| /********************************************************************* |
| * Copyright (c) 2005, 2019 SAP SE |
| * |
| * This program and the accompanying materials are made |
| * available under the terms of the Eclipse Public License 2.0 |
| * which is available at https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * Contributors: |
| * SAP SE - initial API, implementation and documentation |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| **********************************************************************/ |
| package org.eclipse.graphiti.ui.internal.util; |
| |
| import java.util.Comparator; |
| |
| import org.eclipse.emf.ecore.ENamedElement; |
| |
| /** |
| * Compares {@link ENamedElement EMF model elements} by their |
| * {@link ENamedElement#getName() name} |
| * |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public final class ModelElementNameComparator implements Comparator<ENamedElement> { |
| |
| /** |
| * A comparator comparing case-sensitively |
| */ |
| public static final Comparator<ENamedElement> INSTANCE = new ModelElementNameComparator(false); |
| |
| /** |
| * A comparator comparing case-insensitively, i.e. ignoring case |
| */ |
| public static final Comparator<ENamedElement> INSTANCE_IGNORING_CASE = new ModelElementNameComparator(true); |
| |
| private final boolean mIgnoringCase; |
| |
| /** |
| * @see Comparator#compare(Object, Object) |
| */ |
| public int compare(ENamedElement o1, ENamedElement o2) { |
| if (o1 == o2) { |
| return 0; |
| } else if (o1 == null) { |
| return -1; |
| } else if (o2 == null) { |
| return 1; |
| } |
| |
| if (this.mIgnoringCase) { |
| return o1.getName().compareToIgnoreCase(o2.getName()); |
| } else { |
| return o1.getName().compareTo(o2.getName()); |
| } |
| } |
| |
| /** |
| * Creates a comparator which compares case-sensitively or insensitve |
| * depending on the given flag |
| * |
| * @param compareIgnoringCase |
| * <code>true</code> if case should be ignored, |
| * <code>false</code> otherwise |
| * |
| * @see #INSTANCE |
| * @see #INSTANCE_IGNORING_CASE |
| */ |
| private ModelElementNameComparator(boolean compareIgnoringCase) { |
| this.mIgnoringCase = compareIgnoringCase; |
| } |
| |
| @Override |
| public String toString() { |
| return this.mIgnoringCase ? "NOT case-sensitive" : "Case-sensitive"; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| } |