Mercurial > projects > dwt-addons
annotate dwtx/core/commands/common/NamedHandleObjectComparator.d @ 3:6518c18a01f7
eclipse.core package without osgi dependencies
| author | Frank Benoit <benoit@tionex.de> |
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| date | Wed, 26 Mar 2008 00:57:19 +0100 |
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| children | 46a6e0e6ccd4 |
| rev | line source |
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3
6518c18a01f7
eclipse.core package without osgi dependencies
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
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1 /******************************************************************************* * Copyright (c) 2005 IBM Corporation and others. * 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: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> ******************************************************************************/ module dwtx.core.commands.common.NamedHandleObjectComparator; // import java.util.Comparator; import dwtx.core.commands.common.NotDefinedException; import dwtx.core.commands.common.NamedHandleObject; import dwtx.core.internal.commands.util.Util; import dwt.dwthelper.utils; /** * Comparator for instances of <code>NamedHandleObject</code> for display to * an end user. The comparison is based on the name of the instances. * * @since 3.2 */ public class NamedHandleObjectComparator /+: Comparator+/ { /** * Compares to instances of NamedHandleObject based on their names. This is * useful is they are display to an end user. * * @param left * The first obect to compare; may be <code>null</code>. * @param right * The second object to compare; may be <code>null</code>. * @return <code>-1</code> if <code>left</code> is <code>null</code> * and <code>right</code> is not <code>null</code>; * <code>0</code> if they are both <code>null</code>; * <code>1</code> if <code>left</code> is not <code>null</code> * and <code>right</code> is <code>null</code>. Otherwise, the * result of <code>left.compareTo(right)</code>. */ public final int compare(Object left, Object right) { NamedHandleObject a = cast(NamedHandleObject) left; NamedHandleObject b = cast(NamedHandleObject) right; String aName = null; try { aName = a.getName(); } catch (NotDefinedException e) { // Leave aName as null. } String bName = null; try { bName = b.getName(); } catch (NotDefinedException e) { // Leave bName as null. } return Util.compare(aName, bName); } } |