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annotate dwt/events/SelectionListener.d @ 156:969e7de37c3d default tip

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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
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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 dwt.events.SelectionListener;
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16 public import dwt.internal.DWTEventListener;
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17 public import dwt.events.SelectionEvent;
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19 import tango.core.Traits;
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20 import tango.core.Tuple;
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21
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22 /**
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23 * Classes which implement this interface provide methods
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24 * that deal with the events that are generated when selection
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25 * occurs in a control.
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26 * <p>
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27 * After creating an instance of a class that :
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28 * this interface it can be added to a control using the
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29 * <code>addSelectionListener</code> method and removed using
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30 * the <code>removeSelectionListener</code> method. When
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31 * selection occurs in a control the appropriate method
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32 * will be invoked.
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33 * </p>
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34 *
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35 * @see SelectionAdapter
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36 * @see SelectionEvent
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37 */
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38 public interface SelectionListener : DWTEventListener {
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40 public enum {
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41 SELECTION,
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42 DEFAULTSELECTION
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43 }
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44 /**
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45 * Sent when selection occurs in the control.
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46 * <p>
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47 * For example, selection occurs in a List when the user selects
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48 * an item or items with the keyboard or mouse. On some platforms,
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49 * the event occurs when a mouse button or key is pressed. On others,
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50 * it happens when the mouse or key is released. The exact key or
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51 * mouse gesture that causes this event is platform specific.
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52 * </p>
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53 *
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54 * @param e an event containing information about the selection
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55 */
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56 public void widgetSelected(SelectionEvent e);
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57
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58 /**
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59 * Sent when default selection occurs in the control.
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60 * <p>
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61 * For example, on some platforms default selection occurs in a List
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62 * when the user double-clicks an item or types return in a Text.
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63 * On some platforms, the event occurs when a mouse button or key is
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64 * pressed. On others, it happens when the mouse or key is released.
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65 * The exact key or mouse gesture that causes this event is platform
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66 * specific.
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67 * </p>
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68 *
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69 * @param e an event containing information about the default selection
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70 */
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71 public void widgetDefaultSelected(SelectionEvent e);
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72 }
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75 /// DWT extension
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76 private class _DgSelectionListenerT(Dg,T...) : SelectionListener {
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78 alias ParameterTupleOf!(Dg) DgArgs;
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79 static assert( is(DgArgs == Tuple!(SelectionEvent,T)),
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80 "Delegate args not correct: "~DgArgs.stringof~" vs. (Event,"~T.stringof~")" );
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81
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82 Dg dg;
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83 T t;
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84 int type;
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85
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86 private this( int type, Dg dg, T t ){
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87 this.type = type;
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88 this.dg = dg;
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89 static if( T.length > 0 ){
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90 this.t = t;
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91 }
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92 }
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93
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94 public void widgetSelected(SelectionEvent e){
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95 if( type is SelectionListener.SELECTION ){
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96 dg(e,t);
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97 }
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98 }
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99 public void widgetDefaultSelected(SelectionEvent e){
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100 if( type is SelectionListener.DEFAULTSELECTION ){
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101 dg(e,t);
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102 }
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103 }
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104 }
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105
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106 SelectionListener dgSelectionListener( Dg, T... )( int type, Dg dg, T args ){
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107 return new _DgSelectionListenerT!( Dg, T )( type, dg, args );
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108 }
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109
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110 SelectionListener dgSelectionListenerWidgetSelected( Dg, T... )( Dg dg, T args ){
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111 return dgSelectionListener( SelectionListener.SELECTION, dg, args );
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112 }
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113 SelectionListener dgSelectionListenerWidgetDefaultSelected( Dg, T... )( Dg dg, T args ){
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114 return dgSelectionListener( SelectionListener.DEFAULTSELECTION, dg, args );
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115 }
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116