Mercurial > projects > dwt-addons
annotate dwtx/jface/resource/ResourceRegistry.d @ 200:eb3414669eb0 default tip
fix for dmd 1.041 and tango 0.99.8
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 28 Mar 2009 03:09:57 +0100 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2004, 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 dwtx.jface.resource.ResourceRegistry; |
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14 |
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15 |
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16 import dwtx.core.commands.common.EventManager; |
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17 import dwtx.jface.util.IPropertyChangeListener; |
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18 import dwtx.jface.util.PropertyChangeEvent; |
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19 |
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20 import dwt.dwthelper.utils; |
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21 import dwtx.dwtxhelper.Collection; |
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22 |
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23 /** |
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24 * Abstract base class for various JFace registries. |
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25 * |
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26 * @since 3.0 |
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27 */ |
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28 public abstract class ResourceRegistry : EventManager { |
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29 |
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30 /** |
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31 * Adds a property change listener to this registry. |
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32 * |
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33 * @param listener a property change listener |
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34 */ |
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35 public void addListener(IPropertyChangeListener listener) { |
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36 addListenerObject(cast(Object)listener); |
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37 } |
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38 |
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39 /** |
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40 * Disposes all currently allocated resources. |
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41 */ |
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42 protected abstract void clearCaches(); |
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43 |
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44 /** |
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45 * @return the set of keys this manager knows about. This collection |
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46 * should be immutable. |
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47 */ |
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48 public abstract Set getKeySet(); |
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49 |
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50 /** |
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51 * Return whether or not the receiver has a value for the supplied key. |
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52 * |
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53 * @param key the key |
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54 * @return <code>true</code> if there is a value for this key |
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55 */ |
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56 public abstract bool hasValueFor(String key); |
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57 |
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58 /** |
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59 * Fires a <code>PropertyChangeEvent</code>. |
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60 * |
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61 * @param name the name of the symbolic value that is changing. |
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62 * @param oldValue the old value. |
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63 * @param newValue the new value. |
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64 */ |
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65 protected void fireMappingChanged(String name, Object oldValue, |
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66 Object newValue) { |
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67 Object[] myListeners = getListeners(); |
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68 if (myListeners.length > 0) { |
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69 PropertyChangeEvent event = new PropertyChangeEvent(this, name, |
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70 oldValue, newValue); |
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71 for (int i = 0; i < myListeners.length; ++i) { |
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72 try { |
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73 (cast(IPropertyChangeListener) myListeners[i]) |
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74 .propertyChange(event); |
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75 } catch (Exception e) { |
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76 // TODO: how to log? |
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77 } |
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78 } |
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79 } |
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80 } |
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81 |
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82 /** |
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83 * Removes the given listener from this registry. Has no affect if the |
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84 * listener is not registered. |
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85 * |
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86 * @param listener a property change listener |
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87 */ |
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88 public void removeListener(IPropertyChangeListener listener) { |
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89 removeListenerObject(cast(Object)listener); |
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90 } |
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91 } |