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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.draw2d.ChangeListener;
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15 import java.lang.all;
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16 import org.eclipse.draw2d.ChangeEvent;
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17 import tango.core.Traits;
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18 import tango.core.Tuple;
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20 /**
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21 * A generic state listener
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22 */
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23 public interface ChangeListener {
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25 /**
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26 * Called when the listened to object's state has changed.
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27 * @param event the ChangeEvent
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28 */
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29 void handleStateChanged(ChangeEvent event);
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31 }
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32
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33 // SWT Helper
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34 private class _DgChangeListenerT(Dg,T...) : ChangeListener {
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35
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36 alias ParameterTupleOf!(Dg) DgArgs;
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37 static assert( is(DgArgs == Tuple!(ChangeEvent,T)),
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38 "Delegate args not correct" );
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39
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40 Dg dg;
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41 T t;
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43 private this( Dg dg, T t ){
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44 this.dg = dg;
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45 static if( T.length > 0 ){
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46 this.t = t;
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47 }
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48 }
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50 void handleStateChanged( ChangeEvent e ){
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51 dg(e,t);
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52 }
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53 }
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54
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55 ChangeListener dgChangeListener( Dg, T... )( Dg dg, T args ){
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56 return new _DgChangeListenerT!( Dg, T )( dg, args );
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57 }