Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/CellEditor.d @ 90:7ffeace6c47f
Update 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
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| date | Sun, 06 Jul 2008 23:30:07 +0200 |
| parents | 5df4896124c7 |
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| rev | line source |
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| 10 | 1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 10 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
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10 * Tom Schindl <tom.schindl@bestsolution.at> - bugfix in: 187963, 218336 |
| 10 | 11 * Port to the D programming language: |
| 12 * Frank Benoit <benoit@tionex.de> | |
| 13 *******************************************************************************/ | |
| 14 | |
| 15 module dwtx.jface.viewers.CellEditor; | |
| 16 | |
| 17 import dwtx.jface.viewers.ICellEditorValidator; | |
| 18 import dwtx.jface.viewers.ICellEditorListener; | |
| 19 import dwtx.jface.viewers.ColumnViewerEditorActivationEvent; | |
| 71 | 20 import dwtx.jface.viewers.ColumnViewerEditorDeactivationEvent; |
| 10 | 21 |
| 22 import dwt.DWT; | |
| 23 import dwt.events.KeyEvent; | |
| 24 import dwt.widgets.Composite; | |
| 25 import dwt.widgets.Control; | |
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26 import dwt.widgets.Display; |
| 10 | 27 import dwtx.core.runtime.Assert; |
| 28 import dwtx.core.runtime.ListenerList; | |
| 29 import dwtx.jface.util.IPropertyChangeListener; | |
| 30 import dwtx.jface.util.PropertyChangeEvent; | |
| 31 import dwtx.jface.util.SafeRunnable; | |
| 32 | |
| 33 import dwt.dwthelper.utils; | |
| 34 | |
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35 /** |
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36 * Struct-like layout data for cell editors, with reasonable defaults for |
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37 * all fields. |
| 90 | 38 * |
| 39 * @noextend This class is not intended to be subclassed by clients. | |
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40 */ |
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41 public static class LayoutData { |
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42 /** |
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43 * Horizontal alignment; <code>DWT.LEFT</code> by default. |
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44 */ |
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45 public int horizontalAlignment = DWT.LEFT; |
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46 |
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47 /** |
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48 * Indicates control grabs additional space; <code>true</code> by |
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49 * default. |
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50 */ |
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51 public bool grabHorizontal = true; |
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52 |
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53 /** |
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54 * Minimum width in pixels; <code>50</code> pixels by default. |
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55 */ |
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56 public int minimumWidth = 50; |
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57 |
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58 /** |
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59 * Minimum height in pixels; by default the height is aligned to the |
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60 * row-height |
| 90 | 61 * @since 3.4 |
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62 */ |
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63 public int minimumHeight = DWT.DEFAULT; |
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64 |
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65 /** |
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66 * The vertical alignment; <code>DWT.CENTER</code> by default. |
| 90 | 67 * @since 3.4 |
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68 */ |
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69 public int verticalAlignment = DWT.CENTER; |
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70 } |
| 10 | 71 /** |
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72 * Abstract base class for cell editors. Implements property change listener |
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73 * handling, and DWT window management. |
| 10 | 74 * <p> |
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75 * Subclasses implement particular kinds of cell editors. This package contains |
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76 * various specialized cell editors: |
| 10 | 77 * <ul> |
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78 * <li><code>TextCellEditor</code> - for simple text strings</li> |
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79 * <li><code>ColorCellEditor</code> - for colors</li> |
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80 * <li><code>ComboBoxCellEditor</code> - value selected from drop-down combo |
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81 * box</li> |
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82 * <li><code>CheckboxCellEditor</code> - bool valued checkbox</li> |
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83 * <li><code>DialogCellEditor</code> - value from arbitrary dialog</li> |
| 10 | 84 * </ul> |
| 85 * </p> | |
| 86 */ | |
| 87 public abstract class CellEditor { | |
| 88 | |
| 89 /** | |
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90 * List of cell editor listeners (element type: |
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91 * <code>ICellEditorListener</code>). |
| 10 | 92 */ |
| 93 private ListenerList listeners; | |
| 94 | |
| 95 /** | |
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96 * List of cell editor property change listeners (element type: |
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97 * <code>IPropertyChangeListener</code>). |
| 10 | 98 */ |
| 99 private ListenerList propertyChangeListeners; | |
| 100 | |
| 101 /** | |
| 102 * Indicates whether this cell editor's current value is valid. | |
| 103 */ | |
| 104 private bool valid = false; | |
| 105 | |
| 106 /** | |
| 107 * Optional cell editor validator; <code>null</code> if none. | |
| 108 */ | |
| 109 private ICellEditorValidator validator = null; | |
| 110 | |
| 111 /** | |
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112 * The error message string to display for invalid values; <code>null</code> |
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113 * if none (that is, the value is valid). |
| 10 | 114 */ |
| 115 private String errorMessage = null; | |
| 116 | |
| 117 /** | |
| 118 * Indicates whether this cell editor has been changed recently. | |
| 119 */ | |
| 120 private bool dirty = false; | |
| 121 | |
| 122 /** | |
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123 * This cell editor's control, or <code>null</code> if not created yet. |
| 10 | 124 */ |
| 125 private Control control = null; | |
| 126 | |
| 127 /** | |
| 128 * Default cell editor style | |
| 129 */ | |
| 130 private static const int defaultStyle = DWT.NONE; | |
| 131 | |
| 132 /** | |
| 133 * This cell editor's style | |
| 134 */ | |
| 135 private int style = defaultStyle; | |
| 136 | |
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137 //public alias dwtx.jface.viewers.CellEditor.LayoutData LayoutData; |
| 10 | 138 /** |
| 139 * Property name for the copy action | |
| 140 */ | |
| 141 public static const String COPY = "copy"; //$NON-NLS-1$ | |
| 142 | |
| 143 /** | |
| 144 * Property name for the cut action | |
| 145 */ | |
| 146 public static const String CUT = "cut"; //$NON-NLS-1$ | |
| 147 | |
| 148 /** | |
| 149 * Property name for the delete action | |
| 150 */ | |
| 151 public static const String DELETE = "delete"; //$NON-NLS-1$ | |
| 152 | |
| 153 /** | |
| 154 * Property name for the find action | |
| 155 */ | |
| 156 public static const String FIND = "find"; //$NON-NLS-1$ | |
| 157 | |
| 158 /** | |
| 159 * Property name for the paste action | |
| 160 */ | |
| 161 public static const String PASTE = "paste"; //$NON-NLS-1$ | |
| 162 | |
| 163 /** | |
| 164 * Property name for the redo action | |
| 165 */ | |
| 166 public static const String REDO = "redo"; //$NON-NLS-1$ | |
| 167 | |
| 168 /** | |
| 169 * Property name for the select all action | |
| 170 */ | |
| 171 public static const String SELECT_ALL = "selectall"; //$NON-NLS-1$ | |
| 172 | |
| 173 /** | |
| 174 * Property name for the undo action | |
| 175 */ | |
| 176 public static const String UNDO = "undo"; //$NON-NLS-1$ | |
| 177 | |
| 178 /** | |
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179 * Creates a new cell editor with no control The cell editor has no cell |
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180 * validator. |
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181 * |
| 10 | 182 * @since 2.1 |
| 183 */ | |
| 184 protected this() { | |
| 185 propertyChangeListeners = new ListenerList(); | |
| 186 listeners = new ListenerList(); | |
| 187 } | |
| 188 | |
| 189 /** | |
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190 * Creates a new cell editor under the given parent control. The cell editor |
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191 * has no cell validator. |
| 10 | 192 * |
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193 * @param parent |
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194 * the parent control |
| 10 | 195 */ |
| 196 protected this(Composite parent) { | |
| 197 this(parent, defaultStyle); | |
| 198 } | |
| 199 | |
| 200 /** | |
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201 * Creates a new cell editor under the given parent control. The cell editor |
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202 * has no cell validator. |
| 10 | 203 * |
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204 * @param parent |
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205 * the parent control |
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206 * @param style |
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207 * the style bits |
| 10 | 208 * @since 2.1 |
| 209 */ | |
| 210 protected this(Composite parent, int style) { | |
| 211 propertyChangeListeners = new ListenerList(); | |
| 212 listeners = new ListenerList(); | |
| 213 this.style = style; | |
| 214 create(parent); | |
| 215 } | |
| 216 | |
| 217 /** | |
| 218 * Activates this cell editor. | |
| 219 * <p> | |
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220 * The default implementation of this framework method does nothing. |
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221 * Subclasses may reimplement. |
| 10 | 222 * </p> |
| 223 */ | |
| 224 public void activate() { | |
| 225 } | |
| 226 | |
| 227 /** | |
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228 * Adds a listener to this cell editor. Has no effect if an identical |
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229 * listener is already registered. |
| 10 | 230 * |
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231 * @param listener |
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232 * a cell editor listener |
| 10 | 233 */ |
| 234 public void addListener(ICellEditorListener listener) { | |
| 235 listeners.add(cast(Object)listener); | |
| 236 } | |
| 237 | |
| 238 /** | |
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239 * Adds a property change listener to this cell editor. Has no effect if an |
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240 * identical property change listener is already registered. |
| 10 | 241 * |
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242 * @param listener |
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243 * a property change listener |
| 10 | 244 */ |
| 245 public void addPropertyChangeListener(IPropertyChangeListener listener) { | |
| 246 propertyChangeListeners.add(cast(Object)listener); | |
| 247 } | |
| 248 | |
| 249 /** | |
| 250 * Creates the control for this cell editor under the given parent control. | |
| 251 * <p> | |
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252 * This framework method must be implemented by concrete subclasses. |
| 10 | 253 * </p> |
| 254 * | |
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255 * @param parent |
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256 * the parent control |
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257 * @return the new control, or <code>null</code> if this cell editor has |
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258 * no control |
| 10 | 259 */ |
| 260 protected abstract Control createControl(Composite parent); | |
| 261 | |
| 262 /** | |
| 263 * Creates the control for this cell editor under the given parent control. | |
| 264 * | |
|
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265 * @param parent |
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266 * the parent control |
| 10 | 267 * @since 2.1 |
| 268 */ | |
| 269 public void create(Composite parent) { | |
| 270 Assert.isTrue(control is null); | |
| 271 control = createControl(parent); | |
| 272 // See 1GD5CA6: ITPUI:ALL - TaskView.setSelection does not work | |
| 90 | 273 // Control is created with getVisible()is true by default. |
| 10 | 274 // This causes composite.setFocus() to work incorrectly. |
|
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275 // The cell editor's control grabs focus instead, even if it is not |
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276 // active. |
| 10 | 277 // Make the control invisible here by default. |
| 278 deactivate(); | |
| 279 } | |
| 280 | |
| 281 /** | |
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282 * Hides this cell editor's control. Does nothing if this cell editor is not |
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283 * visible. |
| 10 | 284 */ |
| 285 public void deactivate() { | |
| 286 if (control !is null && !control.isDisposed()) { | |
| 287 control.setVisible(false); | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 /** | |
| 292 * Disposes of this cell editor and frees any associated DWT resources. | |
| 293 */ | |
| 294 public void dispose() { | |
| 295 if (control !is null && !control.isDisposed()) { | |
| 296 control.dispose(); | |
| 297 } | |
| 298 control = null; | |
| 299 } | |
| 300 | |
| 301 /** | |
| 302 * Returns this cell editor's value. | |
| 303 * <p> | |
| 304 * This framework method must be implemented by concrete subclasses. | |
| 305 * </p> | |
| 306 * | |
| 307 * @return the value of this cell editor | |
| 308 * @see #getValue | |
| 309 */ | |
| 310 protected abstract Object doGetValue(); | |
| 311 | |
| 312 /** | |
| 313 * Sets the focus to the cell editor's control. | |
| 314 * <p> | |
| 315 * This framework method must be implemented by concrete subclasses. | |
| 316 * </p> | |
| 317 * | |
| 318 * @see #setFocus | |
| 319 */ | |
| 320 protected abstract void doSetFocus(); | |
| 321 | |
| 322 /** | |
| 323 * Sets this cell editor's value. | |
| 324 * <p> | |
| 325 * This framework method must be implemented by concrete subclasses. | |
| 326 * </p> | |
| 327 * | |
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328 * @param value |
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329 * the value of this cell editor |
| 10 | 330 * @see #setValue |
| 331 */ | |
| 332 protected abstract void doSetValue(Object value); | |
| 333 | |
| 334 /** | |
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335 * Notifies all registered cell editor listeners of an apply event. Only |
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336 * listeners registered at the time this method is called are notified. |
| 10 | 337 * |
| 338 * @see ICellEditorListener#applyEditorValue | |
| 339 */ | |
| 340 protected void fireApplyEditorValue() { | |
| 341 Object[] array = listeners.getListeners(); | |
| 342 for (int i = 0; i < array.length; i++) { | |
| 39 | 343 SafeRunnable.run(new class(cast(ICellEditorListener) array[i]) SafeRunnable { |
| 10 | 344 ICellEditorListener l; |
| 39 | 345 this(ICellEditorListener a){ |
| 346 l = a; | |
| 10 | 347 } |
| 348 public void run() { | |
| 349 l.applyEditorValue(); | |
| 350 } | |
| 351 }); | |
| 352 } | |
| 353 } | |
| 354 | |
| 355 /** | |
| 356 * Notifies all registered cell editor listeners that editing has been | |
| 357 * canceled. | |
| 358 * | |
| 359 * @see ICellEditorListener#cancelEditor | |
| 360 */ | |
| 361 protected void fireCancelEditor() { | |
| 362 Object[] array = listeners.getListeners(); | |
| 363 for (int i = 0; i < array.length; i++) { | |
| 39 | 364 SafeRunnable.run(new class(cast(ICellEditorListener) array[i]) SafeRunnable { |
| 10 | 365 ICellEditorListener l; |
| 39 | 366 this(ICellEditorListener a){ |
| 367 l = a; | |
| 10 | 368 } |
| 369 public void run() { | |
| 370 l.cancelEditor(); | |
| 371 } | |
| 372 }); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 /** | |
| 377 * Notifies all registered cell editor listeners of a value change. | |
| 378 * | |
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379 * @param oldValidState |
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380 * the valid state before the end user changed the value |
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381 * @param newValidState |
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382 * the current valid state |
| 10 | 383 * @see ICellEditorListener#editorValueChanged |
| 384 */ | |
| 385 protected void fireEditorValueChanged(bool oldValidState, | |
| 386 bool newValidState) { | |
| 387 Object[] array = listeners.getListeners(); | |
| 388 for (int i = 0; i < array.length; i++) { | |
| 39 | 389 SafeRunnable.run(new class(newValidState,oldValidState,cast(ICellEditorListener) array[i]) SafeRunnable { |
| 10 | 390 bool newValidState_; |
| 391 bool oldValidState_; | |
| 392 ICellEditorListener l; | |
| 39 | 393 this(bool a, bool b, ICellEditorListener c){ |
| 394 newValidState_=a; | |
| 395 oldValidState_=b; | |
| 396 l = c; | |
| 10 | 397 } |
| 398 public void run() { | |
| 399 l.editorValueChanged(oldValidState_, newValidState_); | |
| 400 } | |
| 401 }); | |
| 402 } | |
| 403 } | |
| 404 | |
| 405 /** | |
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406 * Notifies all registered property listeners of an enablement change. |
| 10 | 407 * |
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408 * @param actionId |
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409 * the id indicating what action's enablement has changed. |
| 10 | 410 */ |
| 411 protected void fireEnablementChanged(String actionId) { | |
| 412 Object[] array = propertyChangeListeners.getListeners(); | |
| 413 for (int i = 0; i < array.length; i++) { | |
| 39 | 414 SafeRunnable.run(new class(actionId,cast(IPropertyChangeListener) array[i]) SafeRunnable { |
| 10 | 415 String actionId_; |
| 416 IPropertyChangeListener l; | |
| 39 | 417 this(String a, IPropertyChangeListener b){ |
| 418 actionId_=a; | |
| 419 l = b; | |
| 10 | 420 } |
| 421 public void run() { | |
| 422 l.propertyChange(new PropertyChangeEvent(this, actionId_, | |
| 423 null, null)); | |
| 424 } | |
| 425 }); | |
| 426 } | |
| 427 } | |
| 428 | |
| 429 /** | |
| 430 * Sets the style bits for this cell editor. | |
| 431 * | |
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432 * @param style |
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433 * the DWT style bits for this cell editor |
| 10 | 434 * @since 2.1 |
| 435 */ | |
| 436 public void setStyle(int style) { | |
| 437 this.style = style; | |
| 438 } | |
| 439 | |
| 440 /** | |
| 441 * Returns the style bits for this cell editor. | |
| 442 * | |
| 443 * @return the style for this cell editor | |
| 444 * @since 2.1 | |
| 445 */ | |
| 446 public int getStyle() { | |
| 447 return style; | |
| 448 } | |
| 449 | |
| 450 /** | |
| 451 * Returns the control used to implement this cell editor. | |
| 452 * | |
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453 * @return the control, or <code>null</code> if this cell editor has no |
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454 * control |
| 10 | 455 */ |
| 456 public Control getControl() { | |
| 457 return control; | |
| 458 } | |
| 459 | |
| 460 /** | |
| 461 * Returns the current error message for this cell editor. | |
| 462 * | |
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463 * @return the error message if the cell editor is in an invalid state, and |
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464 * <code>null</code> if the cell editor is valid |
| 10 | 465 */ |
| 466 public String getErrorMessage() { | |
| 467 return errorMessage; | |
| 468 } | |
| 469 | |
| 470 /** | |
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471 * Returns a layout data object for this cell editor. This is called each |
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472 * time the cell editor is activated and controls the layout of the DWT |
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473 * table editor. |
| 10 | 474 * <p> |
|
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475 * The default implementation of this method sets the minimum width to the |
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476 * control's preferred width. Subclasses may extend or reimplement. |
| 10 | 477 * </p> |
| 478 * | |
| 479 * @return the layout data object | |
| 480 */ | |
| 481 public LayoutData getLayoutData() { | |
| 482 LayoutData result = new LayoutData(); | |
| 483 Control control = getControl(); | |
| 484 if (control !is null) { | |
| 485 result.minimumWidth = control.computeSize(DWT.DEFAULT, DWT.DEFAULT, | |
| 486 true).x; | |
| 487 } | |
| 488 return result; | |
| 489 } | |
| 490 | |
| 491 /** | |
| 492 * Returns the input validator for this cell editor. | |
| 493 * | |
| 494 * @return the input validator, or <code>null</code> if none | |
| 495 */ | |
| 496 public ICellEditorValidator getValidator() { | |
| 497 return validator; | |
| 498 } | |
| 499 | |
| 500 /** | |
| 501 * Returns this cell editor's value provided that it has a valid one. | |
| 502 * | |
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503 * @return the value of this cell editor, or <code>null</code> if the cell |
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504 * editor does not contain a valid value |
| 10 | 505 */ |
| 506 public final Object getValue() { | |
| 507 if (!valid) { | |
| 508 return null; | |
| 509 } | |
| 510 | |
| 511 return doGetValue(); | |
| 512 } | |
| 513 | |
| 514 /** | |
| 515 * Returns whether this cell editor is activated. | |
| 516 * | |
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517 * @return <code>true</code> if this cell editor's control is currently |
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518 * activated, and <code>false</code> if not activated |
| 10 | 519 */ |
| 520 public bool isActivated() { | |
| 521 // Use the state of the visible style bit (getVisible()) rather than the | |
| 522 // window's actual visibility (isVisible()) to get correct handling when | |
| 523 // an ancestor control goes invisible, see bug 85331. | |
| 524 return control !is null && control.getVisible(); | |
| 525 } | |
| 526 | |
| 527 /** | |
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528 * Returns <code>true</code> if this cell editor is able to perform the |
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529 * copy action. |
| 10 | 530 * <p> |
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531 * This default implementation always returns <code>false</code>. |
| 10 | 532 * </p> |
| 533 * <p> | |
| 534 * Subclasses may override | |
| 535 * </p> | |
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536 * |
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537 * @return <code>true</code> if copy is possible, <code>false</code> |
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538 * otherwise |
| 10 | 539 */ |
| 540 public bool isCopyEnabled() { | |
| 541 return false; | |
| 542 } | |
| 543 | |
| 544 /** | |
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545 * Returns whether the given value is valid for this cell editor. This cell |
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546 * editor's validator (if any) makes the actual determination. |
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547 * |
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548 * @param value |
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549 * the value to check for |
| 10 | 550 * |
| 551 * @return <code>true</code> if the value is valid, and <code>false</code> | |
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552 * if invalid |
| 10 | 553 */ |
| 554 protected bool isCorrect(Object value) { | |
| 555 errorMessage = null; | |
| 556 if (validator is null) { | |
| 557 return true; | |
| 558 } | |
| 559 | |
| 560 errorMessage = validator.isValid(value); | |
| 561 return (errorMessage is null || errorMessage.equals(""));//$NON-NLS-1$ | |
| 562 } | |
| 563 | |
| 564 /** | |
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565 * Returns <code>true</code> if this cell editor is able to perform the |
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566 * cut action. |
| 10 | 567 * <p> |
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568 * This default implementation always returns <code>false</code>. |
| 10 | 569 * </p> |
| 570 * <p> | |
| 571 * Subclasses may override | |
| 572 * </p> | |
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573 * |
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574 * @return <code>true</code> if cut is possible, <code>false</code> |
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575 * otherwise |
| 10 | 576 */ |
| 577 public bool isCutEnabled() { | |
| 578 return false; | |
| 579 } | |
| 580 | |
| 581 /** | |
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582 * Returns <code>true</code> if this cell editor is able to perform the |
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583 * delete action. |
| 10 | 584 * <p> |
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585 * This default implementation always returns <code>false</code>. |
| 10 | 586 * </p> |
| 587 * <p> | |
| 588 * Subclasses may override | |
| 589 * </p> | |
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590 * |
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591 * @return <code>true</code> if delete is possible, <code>false</code> |
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592 * otherwise |
| 10 | 593 */ |
| 594 public bool isDeleteEnabled() { | |
| 595 return false; | |
| 596 } | |
| 597 | |
| 598 /** | |
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599 * Returns whether the value of this cell editor has changed since the last |
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600 * call to <code>setValue</code>. |
| 10 | 601 * |
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602 * @return <code>true</code> if the value has changed, and |
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603 * <code>false</code> if unchanged |
| 10 | 604 */ |
| 605 public bool isDirty() { | |
| 606 return dirty; | |
| 607 } | |
| 608 | |
| 609 /** | |
| 610 * Marks this cell editor as dirty. | |
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611 * |
| 10 | 612 * @since 2.1 |
| 613 */ | |
| 614 protected void markDirty() { | |
| 615 dirty = true; | |
| 616 } | |
| 617 | |
| 618 /** | |
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619 * Returns <code>true</code> if this cell editor is able to perform the |
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620 * find action. |
| 10 | 621 * <p> |
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622 * This default implementation always returns <code>false</code>. |
| 10 | 623 * </p> |
| 624 * <p> | |
| 625 * Subclasses may override | |
| 626 * </p> | |
|
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627 * |
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628 * @return <code>true</code> if find is possible, <code>false</code> |
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629 * otherwise |
| 10 | 630 */ |
| 631 public bool isFindEnabled() { | |
| 632 return false; | |
| 633 } | |
| 634 | |
| 635 /** | |
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636 * Returns <code>true</code> if this cell editor is able to perform the |
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637 * paste action. |
| 10 | 638 * <p> |
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639 * This default implementation always returns <code>false</code>. |
| 10 | 640 * </p> |
| 641 * <p> | |
| 642 * Subclasses may override | |
| 643 * </p> | |
|
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644 * |
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645 * @return <code>true</code> if paste is possible, <code>false</code> |
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646 * otherwise |
| 10 | 647 */ |
| 648 public bool isPasteEnabled() { | |
| 649 return false; | |
| 650 } | |
| 651 | |
| 652 /** | |
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653 * Returns <code>true</code> if this cell editor is able to perform the |
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654 * redo action. |
| 10 | 655 * <p> |
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656 * This default implementation always returns <code>false</code>. |
| 10 | 657 * </p> |
| 658 * <p> | |
| 659 * Subclasses may override | |
| 660 * </p> | |
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661 * |
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662 * @return <code>true</code> if redo is possible, <code>false</code> |
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663 * otherwise |
| 10 | 664 */ |
| 665 public bool isRedoEnabled() { | |
| 666 return false; | |
| 667 } | |
| 668 | |
| 669 /** | |
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670 * Returns <code>true</code> if this cell editor is able to perform the |
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671 * select all action. |
| 10 | 672 * <p> |
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673 * This default implementation always returns <code>false</code>. |
| 10 | 674 * </p> |
| 675 * <p> | |
| 676 * Subclasses may override | |
| 677 * </p> | |
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678 * |
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679 * @return <code>true</code> if select all is possible, <code>false</code> |
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680 * otherwise |
| 10 | 681 */ |
| 682 public bool isSelectAllEnabled() { | |
| 683 return false; | |
| 684 } | |
| 685 | |
| 686 /** | |
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687 * Returns <code>true</code> if this cell editor is able to perform the |
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688 * undo action. |
| 10 | 689 * <p> |
|
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690 * This default implementation always returns <code>false</code>. |
| 10 | 691 * </p> |
| 692 * <p> | |
| 693 * Subclasses may override | |
| 694 * </p> | |
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695 * |
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696 * @return <code>true</code> if undo is possible, <code>false</code> |
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697 * otherwise |
| 10 | 698 */ |
| 699 public bool isUndoEnabled() { | |
| 700 return false; | |
| 701 } | |
| 702 | |
| 703 /** | |
|
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704 * Returns whether this cell editor has a valid value. The default value is |
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705 * false. |
| 10 | 706 * |
| 707 * @return <code>true</code> if the value is valid, and <code>false</code> | |
|
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708 * if invalid |
| 10 | 709 * |
| 710 * @see #setValueValid(bool) | |
| 711 */ | |
| 712 public bool isValueValid() { | |
| 713 return valid; | |
| 714 } | |
| 715 | |
| 716 /** | |
| 717 * Processes a key release event that occurred in this cell editor. | |
| 718 * <p> | |
|
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719 * The default implementation of this framework method cancels editing when |
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720 * the ESC key is pressed. When the RETURN key is pressed the current value |
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721 * is applied and the cell editor deactivates. Subclasses should call this |
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722 * method at appropriate times. Subclasses may also extend or reimplement. |
| 10 | 723 * </p> |
| 724 * | |
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725 * @param keyEvent |
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726 * the key event |
| 10 | 727 */ |
| 728 protected void keyReleaseOccured(KeyEvent keyEvent) { | |
| 729 if (keyEvent.character is '\u001b') { // Escape character | |
| 730 fireCancelEditor(); | |
| 731 } else if (keyEvent.character is '\r') { // Return key | |
| 732 fireApplyEditorValue(); | |
| 733 deactivate(); | |
| 734 } | |
| 735 } | |
| 736 | |
| 737 /** | |
| 738 * Processes a focus lost event that occurred in this cell editor. | |
| 739 * <p> | |
| 740 * The default implementation of this framework method applies the current | |
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741 * value and deactivates the cell editor. Subclasses should call this method |
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742 * at appropriate times. Subclasses may also extend or reimplement. |
| 10 | 743 * </p> |
| 744 */ | |
| 745 protected void focusLost() { | |
| 746 if (isActivated()) { | |
| 747 fireApplyEditorValue(); | |
| 748 deactivate(); | |
| 749 } | |
| 750 } | |
| 751 | |
| 752 /** | |
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753 * Performs the copy action. This default implementation does nothing. |
| 10 | 754 * <p> |
| 755 * Subclasses may override | |
| 756 * </p> | |
| 757 */ | |
| 758 public void performCopy() { | |
| 759 } | |
| 760 | |
| 761 /** | |
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762 * Performs the cut action. This default implementation does nothing. |
| 10 | 763 * <p> |
| 764 * Subclasses may override | |
| 765 * </p> | |
| 766 */ | |
| 767 public void performCut() { | |
| 768 } | |
| 769 | |
| 770 /** | |
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771 * Performs the delete action. This default implementation does nothing. |
| 10 | 772 * <p> |
| 773 * Subclasses may override | |
| 774 * </p> | |
| 775 */ | |
| 776 public void performDelete() { | |
| 777 } | |
| 778 | |
| 779 /** | |
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780 * Performs the find action. This default implementation does nothing. |
| 10 | 781 * <p> |
| 782 * Subclasses may override | |
| 783 * </p> | |
| 784 */ | |
| 785 public void performFind() { | |
| 786 } | |
| 787 | |
| 788 /** | |
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789 * Performs the paste action. This default implementation does nothing. |
| 10 | 790 * <p> |
| 791 * Subclasses may override | |
| 792 * </p> | |
| 793 */ | |
| 794 public void performPaste() { | |
| 795 } | |
| 796 | |
| 797 /** | |
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798 * Performs the redo action. This default implementation does nothing. |
| 10 | 799 * <p> |
| 800 * Subclasses may override | |
| 801 * </p> | |
| 802 */ | |
| 803 public void performRedo() { | |
| 804 } | |
| 805 | |
| 806 /** | |
|
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807 * Performs the select all action. This default implementation does nothing. |
| 10 | 808 * <p> |
| 809 * Subclasses may override | |
| 810 * </p> | |
| 811 */ | |
| 812 public void performSelectAll() { | |
| 813 } | |
| 814 | |
| 815 /** | |
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816 * Performs the undo action. This default implementation does nothing. |
| 10 | 817 * <p> |
| 818 * Subclasses may override | |
| 819 * </p> | |
| 820 */ | |
| 821 public void performUndo() { | |
| 822 } | |
| 823 | |
| 824 /** | |
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825 * Removes the given listener from this cell editor. Has no affect if an |
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826 * identical listener is not registered. |
| 10 | 827 * |
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828 * @param listener |
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829 * a cell editor listener |
| 10 | 830 */ |
| 831 public void removeListener(ICellEditorListener listener) { | |
| 832 listeners.remove(cast(Object)listener); | |
| 833 } | |
| 834 | |
| 835 /** | |
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836 * Removes the given property change listener from this cell editor. Has no |
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837 * affect if an identical property change listener is not registered. |
| 10 | 838 * |
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839 * @param listener |
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840 * a property change listener |
| 10 | 841 */ |
| 842 public void removePropertyChangeListener(IPropertyChangeListener listener) { | |
| 843 propertyChangeListeners.remove(cast(Object)listener); | |
| 844 } | |
| 845 | |
| 846 /** | |
| 847 * Sets or clears the current error message for this cell editor. | |
| 848 * <p> | |
|
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849 * No formatting is done here, the message to be set is expected to be fully |
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850 * formatted before being passed in. |
| 10 | 851 * </p> |
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852 * |
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853 * @param message |
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854 * the error message, or <code>null</code> to clear |
| 10 | 855 */ |
| 856 protected void setErrorMessage(String message) { | |
| 857 errorMessage = message; | |
| 858 } | |
| 859 | |
| 860 /** | |
| 861 * Sets the focus to the cell editor's control. | |
| 862 */ | |
| 863 public void setFocus() { | |
| 864 doSetFocus(); | |
| 865 } | |
| 866 | |
| 867 /** | |
| 868 * Sets the input validator for this cell editor. | |
| 869 * | |
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870 * @param validator |
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871 * the input validator, or <code>null</code> if none |
| 10 | 872 */ |
| 873 public void setValidator(ICellEditorValidator validator) { | |
| 874 this.validator = validator; | |
| 875 } | |
| 876 | |
| 877 /** | |
| 878 * Sets this cell editor's value. | |
| 879 * | |
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880 * @param value |
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881 * the value of this cell editor |
| 10 | 882 */ |
| 883 public final void setValue(Object value) { | |
| 884 valid = isCorrect(value); | |
| 885 dirty = false; | |
| 886 doSetValue(value); | |
| 887 } | |
| 888 | |
| 889 /** | |
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890 * Sets the valid state of this cell editor. The default value is false. |
| 10 | 891 * Subclasses should call this method on construction. |
| 892 * | |
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893 * @param valid |
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894 * <code>true</code> if the current value is valid, and |
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895 * <code>false</code> if invalid |
| 10 | 896 * |
| 897 * @see #isValueValid | |
| 898 */ | |
| 899 protected void setValueValid(bool valid) { | |
| 900 this.valid = valid; | |
| 901 } | |
| 902 | |
| 903 /** | |
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904 * The value has changed. Updates the valid state flag, marks this cell |
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905 * editor as dirty, and notifies all registered cell editor listeners of a |
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906 * value change. |
| 10 | 907 * |
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908 * @param oldValidState |
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909 * the valid state before the end user changed the value |
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910 * @param newValidState |
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911 * the current valid state |
| 10 | 912 * @see ICellEditorListener#editorValueChanged |
| 913 */ | |
| 914 protected void valueChanged(bool oldValidState, bool newValidState) { | |
| 915 valid = newValidState; | |
| 916 dirty = true; | |
| 917 fireEditorValueChanged(oldValidState, newValidState); | |
| 918 } | |
| 919 | |
| 920 /** | |
|
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921 * Activate the editor but also inform the editor which event triggered its |
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922 * activation. <b>The default implementation simply calls |
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923 * {@link #activate()}</b> |
| 10 | 924 * |
|
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925 * @param activationEvent |
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926 * the editor activation event |
| 10 | 927 * @since 3.3 |
| 928 */ | |
| 929 public void activate(ColumnViewerEditorActivationEvent activationEvent) { | |
| 930 activate(); | |
| 931 } | |
| 932 | |
| 933 /** | |
|
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934 * The default implementation of this method returns true. Subclasses that |
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935 * hook their own focus listener should override this method and return |
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936 * false. See also bug 58777. |
| 10 | 937 * |
|
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938 * @return <code>true</code> to indicate that a focus listener has to be |
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939 * attached |
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940 * @since 3.4 |
| 10 | 941 */ |
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942 protected bool dependsOnExternalFocusListener() { |
| 10 | 943 return true; |
| 944 } | |
|
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945 package bool dependsOnExternalFocusListener_package() { |
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946 return dependsOnExternalFocusListener(); |
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947 } |
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948 |
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949 /** |
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950 * @param event |
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951 * deactivation event |
| 90 | 952 * @since 3.4 |
|
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953 * |
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954 */ |
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955 protected void deactivate(ColumnViewerEditorDeactivationEvent event) { |
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956 deactivate(); |
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957 } |
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958 package void deactivate_package(ColumnViewerEditorDeactivationEvent event) { |
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959 deactivate(event); |
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960 } |
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961 |
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962 /** |
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963 * Returns the duration, in milliseconds, between the mouse button click |
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964 * that activates the cell editor and a subsequent mouse button click that |
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965 * will be considered a <em>double click</em> on the underlying control. |
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966 * Clients may override, in particular, clients can return 0 to denote that |
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967 * two subsequent mouse clicks in a cell should not be interpreted as a |
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968 * double click. |
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969 * |
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970 * @return the timeout or <code>0</code> |
| 90 | 971 * @since 3.4 |
|
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972 */ |
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973 protected int getDoubleClickTimeout() { |
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974 return Display.getCurrent().getDoubleClickTime(); |
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975 } |
|
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976 package int getDoubleClickTimeout_package() { |
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977 return getDoubleClickTimeout(); |
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978 } |
| 10 | 979 } |