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annotate org.eclipse.draw2d/src/org/eclipse/draw2d/ChangeListener.d @ 104:88652073d1c2
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author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 02 May 2009 11:27:24 +0200 |
parents | bc29606a740c |
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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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14 |
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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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19 |
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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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24 |
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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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30 |
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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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42 |
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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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49 |
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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 } |