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annotate dwtx/dwtxhelper/Bean.d @ 108:d79c6b934729

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Impl of Bean
author Frank Benoit <benoit@tionex.de>
date Thu, 07 Aug 2008 16:39:52 +0200
parents 86617aa6b5dd
children 9cb927d16b0a
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1 module dwtx.dwtxhelper.Bean;
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2
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3 import dwt.dwthelper.utils;
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4
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5 class PropertyChangeEvent : EventObject {
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6 private String propertyName;
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7 private Object oldValue;
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8 private Object newValue;
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9 private Object propagationId;
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10
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11 this( Object source, String propertyName, Object oldValue, Object newValue) {
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12 super( source );
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13 this.propertyName = propertyName;
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14 this.oldValue = oldValue;
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15 this.newValue = newValue;
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16 }
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17 Object getNewValue(){
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18 return newValue;
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19 }
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20 Object getOldValue(){
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21 return oldValue;
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22 }
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23 Object getPropagationId(){
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24 return propagationId;
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25 }
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26 String getPropertyName(){
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27 return propertyName;
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28 }
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29 void setPropagationId(Object propagationId){
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30 this.propagationId = propagationId;
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31 }
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32 public override String toString() {
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33 return this.classinfo.name ~ "[source=" ~ source.toString() ~ "]";
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34 }
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35 }
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36
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37 interface PropertyChangeListener {
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38 void propertyChange(PropertyChangeEvent evt);
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39 }
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41
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42 class PropertyChangeSupport {
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43 PropertyChangeListener[][ String ] listeners;
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44 Object obj;
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45 this(Object obj){
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46 this.obj = obj;
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47 }
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48 void addPropertyChangeListener(PropertyChangeListener listener){
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49 addPropertyChangeListener( "", listener );
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50 }
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51 void addPropertyChangeListener(String propertyName, PropertyChangeListener listener){
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52 PropertyChangeListener[] list = listeners[ propertyName ];
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53 list ~= listener;
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54 listeners[ propertyName.dup ] = list;
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55 }
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56 void firePropertyChange(String propertyName, bool oldValue, bool newValue){
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57 firePropertyChange( propertyName, Boolean.valueOf(oldValue), Boolean.valueOf(newValue) );
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58 }
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59 void firePropertyChange(String propertyName, int oldValue, int newValue){
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60 firePropertyChange( propertyName, new Integer(oldValue), new Integer(newValue) );
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61 }
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62 void firePropertyChange(String propertyName, Object oldValue, Object newValue){
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63 PropertyChangeListener[] list = listeners[ propertyName ];
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64 auto evt = new PropertyChangeEvent( obj, propertyName, oldValue, newValue );
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65 foreach( listener; list ){
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66 if( listener ){
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67 listener.propertyChange( evt );
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68 }
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69 }
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70 }
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71 void removePropertyChangeListener(PropertyChangeListener listener){
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72 removePropertyChangeListener( "", listener );
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73 }
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74 void removePropertyChangeListener(String propertyName, PropertyChangeListener listener){
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75 if( auto list = propertyName in listeners ){
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76 tango.core.Array.remove( *list, listener );
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77 if( list.length > 0 ){
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78 listeners[ propertyName.dup ] = *list;
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79 }
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80 else{
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81 listeners.remove( propertyName );
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82 }
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83 }
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84 }
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