Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/ColumnViewer.d @ 90:7ffeace6c47f
Update 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 06 Jul 2008 23:30:07 +0200 |
| parents | 5df4896124c7 |
| children |
| rev | line source |
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| 10 | 1 /******************************************************************************* |
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2 * Copyright (c) 2006, 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 | |
| 10 * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation; bug 153993 | |
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11 * fix in bug 163317, 151295, 167323, 167858, 184346, 187826, 201905 |
| 10 | 12 * Port to the D programming language: |
| 13 * Frank Benoit <benoit@tionex.de> | |
| 14 *******************************************************************************/ | |
| 15 | |
| 16 module dwtx.jface.viewers.ColumnViewer; | |
| 17 | |
| 18 import dwtx.jface.viewers.StructuredViewer; | |
| 19 import dwtx.jface.viewers.CellEditor; | |
| 20 import dwtx.jface.viewers.ICellModifier; | |
| 21 import dwtx.jface.viewers.ColumnViewerEditor; | |
| 22 import dwtx.jface.viewers.ViewerCell; | |
| 23 import dwtx.jface.viewers.ViewerRow; | |
| 24 import dwtx.jface.viewers.ViewerColumn; | |
| 25 import dwtx.jface.viewers.CellLabelProvider; | |
| 26 import dwtx.jface.viewers.IBaseLabelProvider; | |
| 27 import dwtx.jface.viewers.ColumnViewerEditorActivationEvent; | |
| 28 import dwtx.jface.viewers.EditingSupport; | |
| 29 import dwtx.jface.viewers.ITableLabelProvider; | |
| 30 import dwtx.jface.viewers.ILabelProvider; | |
| 31 import dwtx.jface.viewers.StructuredSelection; | |
| 32 import dwt.events.MouseAdapter; | |
| 33 import dwt.events.MouseEvent; | |
| 34 import dwt.graphics.Point; | |
| 35 import dwt.widgets.Control; | |
| 36 import dwt.widgets.Item; | |
| 37 import dwt.widgets.Widget; | |
| 38 import dwtx.core.runtime.Assert; | |
| 39 import dwtx.core.runtime.IStatus; | |
| 40 import dwtx.core.runtime.Status; | |
| 41 import dwtx.jface.internal.InternalPolicy; | |
| 42 import dwtx.jface.util.Policy; | |
| 43 | |
| 44 import dwt.dwthelper.utils; | |
| 45 | |
| 46 /** | |
| 47 * The ColumnViewer is the abstract superclass of viewers that have columns | |
| 48 * (e.g., AbstractTreeViewer and AbstractTableViewer). Concrete subclasses of | |
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49 * {@link ColumnViewer} should implement a matching concrete subclass of {@link |
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50 * ViewerColumn}. |
| 71 | 51 * |
| 10 | 52 * <strong> This class is not intended to be subclassed outside of the JFace |
| 53 * viewers framework.</strong> | |
| 71 | 54 * |
| 10 | 55 * @since 3.3 |
| 71 | 56 * |
| 10 | 57 */ |
| 58 public abstract class ColumnViewer : StructuredViewer { | |
| 59 alias StructuredViewer.getLabelProvider getLabelProvider; | |
| 14 | 60 alias StructuredViewer.refresh refresh; |
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61 alias StructuredViewer.update update; |
| 10 | 62 |
| 63 private CellEditor[] cellEditors; | |
| 64 | |
| 65 private ICellModifier cellModifier; | |
| 66 | |
| 67 private String[] columnProperties; | |
| 68 | |
| 69 /** | |
| 70 * The cell is a cached viewer cell used for refreshing. | |
| 71 */ | |
| 72 private ViewerCell cell; | |
| 73 | |
| 74 private ColumnViewerEditor viewerEditor; | |
| 75 | |
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76 private bool busy; |
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77 private bool logWhenBusy = true; // initially true, set to false |
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78 |
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79 // after logging for the first |
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80 // time |
| 10 | 81 |
| 82 /** | |
| 83 * Create a new instance of the receiver. | |
| 84 */ | |
| 85 public this() { | |
| 86 cell = new ViewerCell(null, 0, null); | |
| 87 } | |
| 88 | |
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89 protected override void hookControl(Control control) { |
| 10 | 90 super.hookControl(control); |
| 91 viewerEditor = createViewerEditor(); | |
| 92 hookEditingSupport(control); | |
| 93 } | |
| 94 | |
| 95 /** | |
| 96 * Hook up the editing support. Subclasses may override. | |
| 71 | 97 * |
| 10 | 98 * @param control |
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99 * the control you want to hook on |
| 10 | 100 */ |
| 101 protected void hookEditingSupport(Control control) { | |
| 102 // Needed for backwards comp with AbstractTreeViewer and TableTreeViewer | |
| 103 // who are not hooked this way others may already overwrite and provide | |
| 104 // their | |
| 105 // own impl | |
| 106 if (viewerEditor !is null) { | |
| 107 control.addMouseListener(new class MouseAdapter { | |
| 108 public void mouseDown(MouseEvent e) { | |
| 109 // Workaround for bug 185817 | |
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110 if (e.count !is 2) { |
| 10 | 111 handleMouseDown(e); |
| 112 } | |
| 113 } | |
| 114 | |
| 115 public void mouseDoubleClick(MouseEvent e) { | |
| 116 handleMouseDown(e); | |
| 117 } | |
| 118 }); | |
| 119 } | |
| 120 } | |
| 121 | |
| 122 /** | |
| 123 * Creates the viewer editor used for editing cell contents. To be | |
| 124 * implemented by subclasses. | |
| 71 | 125 * |
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126 * @return the editor, or <code>null</code> if this viewer does not support |
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127 * editing cell contents. |
| 10 | 128 */ |
| 129 protected abstract ColumnViewerEditor createViewerEditor(); | |
| 130 | |
| 131 /** | |
| 132 * Returns the viewer cell at the given widget-relative coordinates, or | |
| 133 * <code>null</code> if there is no cell at that location | |
| 71 | 134 * |
| 10 | 135 * @param point |
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136 * the widget-relative coordinates |
| 10 | 137 * @return the cell or <code>null</code> if no cell is found at the given |
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138 * point |
| 71 | 139 * |
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140 * @since 3.4 |
| 10 | 141 */ |
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142 public ViewerCell getCell(Point point) { |
| 10 | 143 ViewerRow row = getViewerRow(point); |
| 144 if (row !is null) { | |
| 145 return row.getCell(point); | |
| 146 } | |
| 147 | |
| 148 return null; | |
| 149 } | |
| 150 | |
| 151 /** | |
| 152 * Returns the viewer row at the given widget-relative coordinates. | |
| 71 | 153 * |
| 10 | 154 * @param point |
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155 * the widget-relative coordinates of the viewer row |
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156 * @return ViewerRow the row or <code>null</code> if no row is found at the |
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157 * given coordinates |
| 10 | 158 */ |
| 159 protected ViewerRow getViewerRow(Point point) { | |
| 160 Item item = getItemAt(point); | |
| 161 | |
| 162 if (item !is null) { | |
| 163 return getViewerRowFromItem(item); | |
| 164 } | |
| 165 | |
| 166 return null; | |
| 167 } | |
| 168 package ViewerRow getViewerRow_package(Point point) { | |
| 169 return getViewerRow(point); | |
| 170 } | |
| 171 | |
| 172 /** | |
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173 * Returns a {@link ViewerRow} associated with the given row widget. |
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174 * Implementations may re-use the same instance for different row widgets; |
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175 * callers can only use the viewer row locally and until the next call to |
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176 * this method. |
| 71 | 177 * |
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178 * @param item |
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179 * the row widget |
| 10 | 180 * @return ViewerRow a viewer row object |
| 181 */ | |
| 182 protected abstract ViewerRow getViewerRowFromItem(Widget item); | |
| 183 package ViewerRow getViewerRowFromItem_package(Widget item){ | |
| 184 return getViewerRowFromItem(item); | |
| 185 } | |
| 186 | |
| 187 /** | |
| 188 * Returns the column widget at the given column index. | |
| 71 | 189 * |
| 10 | 190 * @param columnIndex |
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191 * the column index |
| 10 | 192 * @return Widget the column widget |
| 193 */ | |
| 194 protected abstract Widget getColumnViewerOwner(int columnIndex); | |
| 195 | |
| 196 /** | |
| 197 * Returns the viewer column for the given column index. | |
| 71 | 198 * |
| 10 | 199 * @param columnIndex |
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200 * the column index |
| 10 | 201 * @return the viewer column at the given index, or <code>null</code> if |
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202 * there is none for the given index |
| 10 | 203 */ |
| 204 /* package */ViewerColumn getViewerColumn(int columnIndex) { | |
| 205 | |
| 206 ViewerColumn viewer; | |
| 207 Widget columnOwner = getColumnViewerOwner(columnIndex); | |
| 208 | |
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209 if (columnOwner is null || columnOwner.isDisposed()) { |
| 10 | 210 return null; |
| 211 } | |
| 212 | |
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213 viewer = cast(ViewerColumn) columnOwner.getData(ViewerColumn.COLUMN_VIEWER_KEY); |
| 10 | 214 |
| 215 if (viewer is null) { | |
| 216 viewer = createViewerColumn(columnOwner, CellLabelProvider | |
| 217 .createViewerLabelProvider(this, getLabelProvider())); | |
| 218 setupEditingSupport(columnIndex, viewer); | |
| 219 } | |
| 220 | |
| 221 if (viewer.getEditingSupport() is null && getCellModifier() !is null) { | |
| 222 setupEditingSupport(columnIndex, viewer); | |
| 223 } | |
| 224 | |
| 225 return viewer; | |
| 226 } | |
| 227 | |
| 228 /** | |
| 229 * Sets up editing support for the given column based on the "old" cell | |
| 230 * editor API. | |
| 71 | 231 * |
| 10 | 232 * @param columnIndex |
| 233 * @param viewer | |
| 234 */ | |
| 235 private void setupEditingSupport(int columnIndex, ViewerColumn viewer) { | |
| 236 if (getCellModifier() !is null) { | |
| 39 | 237 viewer.setEditingSupport(new class(this,columnIndex) EditingSupport { |
| 10 | 238 int columnIndex_; |
| 39 | 239 this(ColumnViewer cv, int ci){ |
| 10 | 240 super(cv); |
| 39 | 241 columnIndex_=ci; |
| 10 | 242 } |
| 243 /* | |
| 244 * (non-Javadoc) | |
| 71 | 245 * |
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246 * @see |
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247 * dwtx.jface.viewers.EditingSupport#canEdit(java.lang |
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248 * .Object) |
| 10 | 249 */ |
| 250 public bool canEdit(Object element) { | |
| 251 Object[] properties = getColumnProperties(); | |
| 252 | |
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253 if (columnIndex_ < properties.length ) { |
| 10 | 254 return getCellModifier().canModify(element, |
| 255 (cast(ArrayWrapperString) getColumnProperties()[columnIndex_]).array); | |
| 256 } | |
| 257 | |
| 258 return false; | |
| 259 } | |
| 260 | |
| 261 /* | |
| 262 * (non-Javadoc) | |
| 71 | 263 * |
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264 * @see |
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265 * dwtx.jface.viewers.EditingSupport#getCellEditor(java |
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266 * .lang.Object) |
| 10 | 267 */ |
| 268 public CellEditor getCellEditor(Object element) { | |
| 269 CellEditor[] editors = getCellEditors(); | |
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270 if (columnIndex_ < editors.length ) { |
| 10 | 271 return getCellEditors()[columnIndex_]; |
| 272 } | |
| 273 return null; | |
| 274 } | |
| 275 | |
| 276 /* | |
| 277 * (non-Javadoc) | |
| 71 | 278 * |
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279 * @see |
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280 * dwtx.jface.viewers.EditingSupport#getValue(java.lang |
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281 * .Object) |
| 10 | 282 */ |
| 283 public Object getValue(Object element) { | |
| 284 Object[] properties = getColumnProperties(); | |
| 285 | |
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286 if (columnIndex_ < properties.length) { |
| 10 | 287 return getCellModifier().getValue(element, |
| 288 (cast(ArrayWrapperString) getColumnProperties()[columnIndex_]).array); | |
| 289 } | |
| 290 | |
| 291 return null; | |
| 292 } | |
| 293 | |
| 294 /* | |
| 295 * (non-Javadoc) | |
| 71 | 296 * |
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297 * @see |
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298 * dwtx.jface.viewers.EditingSupport#setValue(java.lang |
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299 * .Object, java.lang.Object) |
| 10 | 300 */ |
| 301 public void setValue(Object element, Object value) { | |
| 302 Object[] properties = getColumnProperties(); | |
| 303 | |
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304 if (columnIndex_ < properties.length) { |
| 10 | 305 getCellModifier().modify(findItem(element), |
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306 (cast(ArrayWrapperString) getColumnProperties()[columnIndex_]).array, |
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307 value); |
| 10 | 308 } |
| 309 } | |
| 310 | |
| 311 bool isLegacySupport() { | |
| 312 return true; | |
| 313 } | |
| 314 }); | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 /** | |
| 319 * Creates a generic viewer column for the given column widget, based on the | |
| 320 * given label provider. | |
| 71 | 321 * |
| 10 | 322 * @param columnOwner |
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323 * the column widget |
| 10 | 324 * @param labelProvider |
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325 * the label provider to use for the column |
| 10 | 326 * @return ViewerColumn the viewer column |
| 327 */ | |
| 328 private ViewerColumn createViewerColumn(Widget columnOwner, | |
| 329 CellLabelProvider labelProvider) { | |
| 330 ViewerColumn column = new class(this, columnOwner) ViewerColumn { | |
| 331 this( ColumnViewer cv, Widget co ){ | |
| 332 super(cv,co); | |
| 333 } | |
| 334 }; | |
| 335 column.setLabelProvider(labelProvider, false); | |
| 336 return column; | |
| 337 } | |
| 338 | |
| 339 /** | |
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340 * Update the cached cell object with the given row and column. |
| 71 | 341 * |
| 10 | 342 * @param rowItem |
| 343 * @param column | |
| 344 * @return ViewerCell | |
| 345 */ | |
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346 /* package */ViewerCell updateCell(ViewerRow rowItem, int column, |
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347 Object element) { |
| 10 | 348 cell.update(rowItem, column, element); |
| 349 return cell; | |
| 350 } | |
| 351 | |
| 352 /** | |
| 353 * Returns the {@link Item} at the given widget-relative coordinates, or | |
| 354 * <code>null</code> if there is no item at the given coordinates. | |
| 71 | 355 * |
| 10 | 356 * @param point |
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357 * the widget-relative coordinates |
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358 * @return the {@link Item} at the coordinates or <code>null</code> if there |
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359 * is no item at the given coordinates |
| 10 | 360 */ |
| 361 protected abstract Item getItemAt(Point point); | |
| 362 | |
| 363 /* | |
| 364 * (non-Javadoc) | |
| 71 | 365 * |
| 10 | 366 * @see dwtx.jface.viewers.StructuredViewer#getItem(int, int) |
| 367 */ | |
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368 protected override Item getItem(int x, int y) { |
| 10 | 369 return getItemAt(getControl().toControl(x, y)); |
| 370 } | |
| 371 | |
| 372 /** | |
| 373 * The column viewer implementation of this <code>Viewer</code> framework | |
| 374 * method ensures that the given label provider is an instance of | |
| 375 * <code>ITableLabelProvider</code>, <code>ILabelProvider</code>, or | |
| 376 * <code>CellLabelProvider</code>. | |
| 377 * <p> | |
|
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378 * If the label provider is an {@link ITableLabelProvider} , then it |
| 10 | 379 * provides a separate label text and image for each column. Implementers of |
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380 * <code>ITableLabelProvider</code> may also implement {@link |
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381 * ITableColorProvider} and/or {@link ITableFontProvider} to provide colors |
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382 * and/or fonts. |
| 10 | 383 * </p> |
| 384 * <p> | |
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385 * If the label provider is an <code>ILabelProvider</code> , then it |
| 10 | 386 * provides only the label text and image for the first column, and any |
| 387 * remaining columns are blank. Implementers of <code>ILabelProvider</code> | |
| 388 * may also implement {@link IColorProvider} and/or {@link IFontProvider} to | |
| 389 * provide colors and/or fonts. | |
| 390 * </p> | |
| 71 | 391 * |
| 10 | 392 */ |
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393 public override void setLabelProvider(IBaseLabelProvider labelProvider) { |
| 10 | 394 Assert.isTrue( null !is cast(ITableLabelProvider)labelProvider |
| 395 || null !is cast(ILabelProvider)labelProvider | |
| 396 || null !is cast(CellLabelProvider)labelProvider ); | |
| 397 updateColumnParts(labelProvider);// Reset the label providers in the | |
| 398 // columns | |
| 399 super.setLabelProvider(labelProvider); | |
| 71 | 400 if ( null !is cast(CellLabelProvider)labelProvider ) { |
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401 (cast(CellLabelProvider) labelProvider).initialize_package(this, null); |
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402 } |
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403 } |
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404 |
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405 void internalDisposeLabelProvider(IBaseLabelProvider oldProvider) { |
| 71 | 406 if (null !is cast(CellLabelProvider)oldProvider ) { |
| 407 (cast(CellLabelProvider) oldProvider).dispose(this, null); | |
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408 } else { |
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409 super.internalDisposeLabelProvider(oldProvider); |
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410 } |
| 10 | 411 } |
| 412 | |
| 413 /** | |
| 414 * Clear the viewer parts for the columns | |
| 415 */ | |
| 416 private void updateColumnParts(IBaseLabelProvider labelProvider) { | |
| 417 ViewerColumn column; | |
| 418 int i = 0; | |
| 419 | |
| 420 while ((column = getViewerColumn(i++)) !is null) { | |
| 421 column.setLabelProvider(CellLabelProvider | |
| 422 .createViewerLabelProvider(this, labelProvider), false); | |
| 423 } | |
| 424 } | |
| 425 | |
| 426 /** | |
| 427 * Cancels a currently active cell editor if one is active. All changes | |
| 428 * already done in the cell editor are lost. | |
| 71 | 429 * |
| 10 | 430 * @since 3.1 (in subclasses, added in 3.3 to abstract class) |
| 431 */ | |
| 432 public void cancelEditing() { | |
| 433 if (viewerEditor !is null) { | |
| 434 viewerEditor.cancelEditing(); | |
| 435 } | |
| 436 } | |
| 437 | |
| 438 /** | |
| 439 * Apply the value of the active cell editor if one is active. | |
| 71 | 440 * |
| 10 | 441 * @since 3.3 |
| 442 */ | |
| 443 protected void applyEditorValue() { | |
| 444 if (viewerEditor !is null) { | |
| 445 viewerEditor.applyEditorValue(); | |
| 446 } | |
| 447 } | |
| 448 | |
| 449 /** | |
| 450 * Starts editing the given element at the given column index. | |
| 71 | 451 * |
| 10 | 452 * @param element |
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453 * the model element |
| 10 | 454 * @param column |
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455 * the column index |
| 10 | 456 * @since 3.1 (in subclasses, added in 3.3 to abstract class) |
| 457 */ | |
| 458 public void editElement(Object element, int column) { | |
| 459 if (viewerEditor !is null) { | |
| 460 try { | |
| 461 getControl().setRedraw(false); | |
| 462 // Set the selection at first because in Tree's | |
| 463 // the element might not be materialized | |
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464 setSelection(new StructuredSelection(element), true); |
| 10 | 465 |
| 466 Widget item = findItem(element); | |
| 467 if (item !is null) { | |
| 468 ViewerRow row = getViewerRowFromItem(item); | |
| 469 if (row !is null) { | |
| 470 ViewerCell cell = row.getCell(column); | |
| 471 if (cell !is null) { | |
| 472 triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent( | |
| 473 cell)); | |
| 474 } | |
| 475 } | |
| 476 } | |
| 477 } finally { | |
| 478 getControl().setRedraw(true); | |
| 479 } | |
| 480 } | |
| 481 } | |
| 482 | |
| 483 /** | |
|
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484 * Return the CellEditors for the receiver, or <code>null</code> if no cell |
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485 * editors are set. |
| 10 | 486 * <p> |
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487 * Since 3.3, an alternative API is available, see {@link |
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488 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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489 * of editing values in a column viewer. |
| 10 | 490 * </p> |
| 71 | 491 * |
| 492 * | |
| 10 | 493 * @return CellEditor[] |
| 494 * @since 3.1 (in subclasses, added in 3.3 to abstract class) | |
| 495 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 496 * @see EditingSupport | |
| 497 */ | |
| 498 public CellEditor[] getCellEditors() { | |
| 499 return cellEditors; | |
| 500 } | |
| 501 | |
| 502 /** | |
| 503 * Returns the cell modifier of this viewer, or <code>null</code> if none | |
| 504 * has been set. | |
| 71 | 505 * |
| 10 | 506 * <p> |
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507 * Since 3.3, an alternative API is available, see {@link |
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508 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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509 * of editing values in a column viewer. |
| 10 | 510 * </p> |
| 71 | 511 * |
| 10 | 512 * @return the cell modifier, or <code>null</code> |
| 513 * @since 3.1 (in subclasses, added in 3.3 to abstract class) | |
| 514 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 515 * @see EditingSupport | |
| 516 */ | |
| 517 public ICellModifier getCellModifier() { | |
| 518 return cellModifier; | |
| 519 } | |
| 520 | |
| 521 /** | |
| 522 * Returns the column properties of this table viewer. The properties must | |
| 523 * correspond with the columns of the table control. They are used to | |
| 524 * identify the column in a cell modifier. | |
| 71 | 525 * |
| 10 | 526 * <p> |
|
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527 * Since 3.3, an alternative API is available, see {@link |
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528 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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529 * of editing values in a column viewer. |
| 10 | 530 * </p> |
| 71 | 531 * |
| 10 | 532 * @return the list of column properties |
| 533 * @since 3.1 (in subclasses, added in 3.3 to abstract class) | |
| 534 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 535 * @see EditingSupport | |
| 536 */ | |
| 537 public Object[] getColumnProperties() { | |
| 538 Object[] res; | |
| 539 foreach( prop; columnProperties ){ | |
| 540 res ~= new ArrayWrapperString( prop ); | |
| 541 } | |
| 542 return res; | |
| 543 } | |
| 544 | |
| 545 /** | |
| 546 * Returns whether there is an active cell editor. | |
| 71 | 547 * |
| 10 | 548 * <p> |
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549 * Since 3.3, an alternative API is available, see {@link |
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550 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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551 * of editing values in a column viewer. |
| 10 | 552 * </p> |
| 71 | 553 * |
| 10 | 554 * @return <code>true</code> if there is an active cell editor, and |
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555 * <code>false</code> otherwise |
| 10 | 556 * @since 3.1 (in subclasses, added in 3.3 to abstract class) |
| 557 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 558 * @see EditingSupport | |
| 559 */ | |
| 560 public bool isCellEditorActive() { | |
| 561 if (viewerEditor !is null) { | |
| 562 return viewerEditor.isCellEditorActive(); | |
| 563 } | |
| 564 return false; | |
| 565 } | |
| 566 | |
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567 public override void refresh(Object element) { |
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568 if (checkBusy()) |
| 10 | 569 return; |
| 570 | |
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571 if (isCellEditorActive()) { |
| 10 | 572 cancelEditing(); |
| 573 } | |
| 574 | |
| 575 super.refresh(element); | |
| 576 } | |
| 577 | |
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578 public override void refresh(Object element, bool updateLabels) { |
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579 if (checkBusy()) |
| 10 | 580 return; |
| 581 | |
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582 if (isCellEditorActive()) { |
| 10 | 583 cancelEditing(); |
| 584 } | |
| 585 | |
| 586 super.refresh(element, updateLabels); | |
| 587 } | |
| 588 | |
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589 public override void update(Object element, String[] properties) { |
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590 if (checkBusy()) |
| 10 | 591 return; |
| 592 super.update(element, properties); | |
| 593 } | |
| 594 | |
| 595 /** | |
| 596 * Sets the cell editors of this column viewer. If editing is not supported | |
| 597 * by this viewer the call simply has no effect. | |
| 71 | 598 * |
| 10 | 599 * <p> |
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600 * Since 3.3, an alternative API is available, see {@link |
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601 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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602 * of editing values in a column viewer. |
| 10 | 603 * </p> |
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604 * <p> |
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605 * Users setting up an editable {@link TreeViewer} or {@link TableViewer} with more than 1 column <b>have</b> |
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606 * to pass the DWT.FULL_SELECTION style bit |
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607 * </p> |
| 10 | 608 * @param editors |
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609 * the list of cell editors |
| 10 | 610 * @since 3.1 (in subclasses, added in 3.3 to abstract class) |
| 611 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 612 * @see EditingSupport | |
| 613 */ | |
| 614 public void setCellEditors(CellEditor[] editors) { | |
| 615 this.cellEditors = editors; | |
| 616 } | |
| 617 | |
| 618 /** | |
| 619 * Sets the cell modifier for this column viewer. This method does nothing | |
| 620 * if editing is not supported by this viewer. | |
| 71 | 621 * |
| 10 | 622 * <p> |
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623 * Since 3.3, an alternative API is available, see {@link |
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624 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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625 * of editing values in a column viewer. |
| 10 | 626 * </p> |
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627 * <p> |
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628 * Users setting up an editable {@link TreeViewer} or {@link TableViewer} with more than 1 column <b>have</b> |
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629 * to pass the DWT.FULL_SELECTION style bit |
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630 * </p> |
| 10 | 631 * @param modifier |
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632 * the cell modifier |
| 10 | 633 * @since 3.1 (in subclasses, added in 3.3 to abstract class) |
| 634 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 635 * @see EditingSupport | |
| 636 */ | |
| 637 public void setCellModifier(ICellModifier modifier) { | |
| 638 this.cellModifier = modifier; | |
| 639 } | |
| 640 | |
| 641 /** | |
| 642 * Sets the column properties of this column viewer. The properties must | |
| 643 * correspond with the columns of the control. They are used to identify the | |
| 644 * column in a cell modifier. If editing is not supported by this viewer the | |
| 645 * call simply has no effect. | |
| 71 | 646 * |
| 10 | 647 * <p> |
|
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648 * Since 3.3, an alternative API is available, see {@link |
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649 * ViewerColumn#setEditingSupport(EditingSupport)} for a more flexible way |
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650 * of editing values in a column viewer. |
| 10 | 651 * </p> |
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652 * <p> |
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653 * Users setting up an editable {@link TreeViewer} or {@link TableViewer} with more than 1 column <b>have</b> |
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654 * to pass the DWT.FULL_SELECTION style bit |
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655 * </p> |
| 10 | 656 * @param columnProperties |
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657 * the list of column properties |
| 10 | 658 * @since 3.1 (in subclasses, added in 3.3 to abstract class) |
| 659 * @see ViewerColumn#setEditingSupport(EditingSupport) | |
| 660 * @see EditingSupport | |
| 661 */ | |
| 662 public void setColumnProperties(String[] columnProperties) { | |
| 663 this.columnProperties = columnProperties; | |
| 664 } | |
| 665 | |
| 666 /** | |
| 667 * Returns the number of columns contained in the receiver. If no columns | |
| 668 * were created by the programmer, this value is zero, despite the fact that | |
| 669 * visually, one column of items may be visible. This occurs when the | |
| 670 * programmer uses the column viewer like a list, adding elements but never | |
| 671 * creating a column. | |
| 71 | 672 * |
| 10 | 673 * @return the number of columns |
| 71 | 674 * |
| 10 | 675 * @since 3.3 |
| 676 */ | |
| 677 protected abstract int doGetColumnCount(); | |
| 678 package int doGetColumnCount_package(){ | |
| 679 return doGetColumnCount(); | |
| 680 } | |
| 681 | |
| 682 /** | |
| 683 * Returns the label provider associated with the column at the given index | |
| 684 * or <code>null</code> if no column with this index is known. | |
| 71 | 685 * |
| 10 | 686 * @param columnIndex |
|
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687 * the column index |
| 10 | 688 * @return the label provider associated with the column or |
|
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689 * <code>null</code> if no column with this index is known |
| 71 | 690 * |
| 10 | 691 * @since 3.3 |
| 692 */ | |
| 693 public CellLabelProvider getLabelProvider(int columnIndex) { | |
| 694 ViewerColumn column = getViewerColumn(columnIndex); | |
| 695 if (column !is null) { | |
|
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696 auto res = column.getLabelProvider(); |
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697 return res; |
| 10 | 698 } |
| 699 return null; | |
| 700 } | |
| 701 | |
| 702 private void handleMouseDown(MouseEvent e) { | |
| 703 ViewerCell cell = getCell(new Point(e.x, e.y)); | |
| 704 | |
| 705 if (cell !is null) { | |
| 706 triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent( | |
| 707 cell, e)); | |
| 708 } | |
| 709 } | |
| 710 | |
| 711 /** | |
| 712 * Invoking this method fires an editor activation event which tries to | |
|
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713 * enable the editor but before this event is passed to {@link |
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714 * ColumnViewerEditorActivationStrategy} to see if this event should really |
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715 * trigger editor activation |
| 71 | 716 * |
| 10 | 717 * @param event |
|
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718 * the activation event |
| 10 | 719 */ |
| 720 protected void triggerEditorActivationEvent( | |
| 721 ColumnViewerEditorActivationEvent event) { | |
| 722 viewerEditor.handleEditorActivationEvent(event); | |
| 723 } | |
| 724 package void triggerEditorActivationEvent_package( | |
| 725 ColumnViewerEditorActivationEvent event) { | |
| 726 triggerEditorActivationEvent(event); | |
| 727 } | |
| 728 | |
| 729 /** | |
| 730 * @param columnViewerEditor | |
|
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731 * the new column viewer editor |
| 10 | 732 */ |
| 733 public void setColumnViewerEditor(ColumnViewerEditor columnViewerEditor) { | |
| 90 | 734 Assert.isNotNull(columnViewerEditor); |
| 10 | 735 this.viewerEditor = columnViewerEditor; |
| 736 } | |
| 737 | |
| 738 /** | |
| 739 * @return the currently attached viewer editor | |
| 740 */ | |
| 741 public ColumnViewerEditor getColumnViewerEditor() { | |
| 742 return viewerEditor; | |
| 743 } | |
| 744 | |
|
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745 protected override Object[] getRawChildren(Object parent) { |
|
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746 bool oldBusy = isBusy(); |
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747 setBusy(true); |
| 10 | 748 try { |
| 749 return super.getRawChildren(parent); | |
| 750 } finally { | |
|
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751 setBusy(oldBusy); |
| 10 | 752 } |
| 753 } | |
| 754 | |
| 755 void clearLegacyEditingSetup() { | |
|
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756 if (!getControl().isDisposed() && getCellEditors() !is null) { |
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757 int count = doGetColumnCount(); |
| 10 | 758 |
|
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759 for (int i = 0; i < count || i is 0; i++) { |
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760 Widget owner = getColumnViewerOwner(i); |
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761 if (owner !is null && !owner.isDisposed()) { |
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762 ViewerColumn column = cast(ViewerColumn) owner |
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763 .getData(ViewerColumn.COLUMN_VIEWER_KEY); |
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764 if (column !is null) { |
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765 EditingSupport e = column.getEditingSupport(); |
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766 // Ensure that only EditingSupports are wiped that are |
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767 // setup |
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768 // for Legacy reasons |
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769 if (e !is null && e.isLegacySupport()) { |
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770 column.setEditingSupport(null); |
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771 } |
| 10 | 772 } |
| 773 } | |
| 774 } | |
| 775 } | |
| 776 } | |
|
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777 |
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778 /** |
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779 * Checks if this viewer is currently busy, logging a warning and returning |
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780 * <code>true</code> if it is busy. A column viewer is busy when it is |
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781 * processing a refresh, add, remove, insert, replace, setItemCount, |
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782 * expandToLevel, update, setExpandedElements, or similar method that may |
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783 * make calls to client code. Column viewers are not designed to handle |
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784 * reentrant calls while they are busy. The method returns <code>true</code> |
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785 * if the viewer is busy. It is recommended that this method be used by |
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786 * subclasses to determine whether the viewer is busy to return early from |
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787 * state-changing methods. |
| 71 | 788 * |
|
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789 * <p> |
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790 * This method is not intended to be overridden by subclasses. |
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791 * </p> |
| 71 | 792 * |
|
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793 * @return <code>true</code> if the viewer is busy. |
| 71 | 794 * |
|
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795 * @since 3.4 |
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796 */ |
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797 protected bool checkBusy() { |
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798 if (isBusy()) { |
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799 if (logWhenBusy) { |
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800 String message = "Ignored reentrant call while viewer is busy."; //$NON-NLS-1$ |
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801 if (!InternalPolicy.DEBUG_LOG_REENTRANT_VIEWER_CALLS) { |
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802 // stop logging after the first |
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803 logWhenBusy = false; |
|
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804 message ~= " This is only logged once per viewer instance," ~ //$NON-NLS-1$ |
|
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805 " but similar calls will still be ignored."; //$NON-NLS-1$ |
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806 } |
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807 Policy.getLog().log( |
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808 new Status(IStatus.WARNING, Policy.JFACE, message, |
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809 new RuntimeException())); |
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810 } |
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811 return true; |
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812 } |
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813 return false; |
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814 } |
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815 |
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816 /** |
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817 * Sets the busy state of this viewer. Subclasses MUST use <code>try</code> |
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818 * ...<code>finally</code> as follows to ensure that the busy flag is reset |
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819 * to its original value: |
| 71 | 820 * |
|
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821 * <pre> |
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822 * bool oldBusy = isBusy(); |
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823 * setBusy(true); |
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824 * try { |
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825 * // do work |
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826 * } finally { |
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827 * setBusy(oldBusy); |
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828 * } |
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829 * </pre> |
| 71 | 830 * |
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831 * <p> |
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832 * This method is not intended to be overridden by subclasses. |
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833 * </p> |
| 71 | 834 * |
|
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835 * @param busy |
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836 * the new value of the busy flag |
| 71 | 837 * |
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838 * @since 3.4 |
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839 */ |
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840 protected void setBusy(bool busy) { |
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841 this.busy = busy; |
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842 } |
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843 |
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844 /** |
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845 * Returns <code>true</code> if this viewer is currently busy processing a |
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846 * refresh, add, remove, insert, replace, setItemCount, expandToLevel, |
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847 * update, setExpandedElements, or similar method that may make calls to |
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848 * client code. Column viewers are not designed to handle reentrant calls |
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849 * while they are busy. It is recommended that clients avoid using this |
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850 * method if they can ensure by other means that they will not make |
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851 * reentrant calls to methods like the ones listed above. See bug 184991 for |
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852 * background discussion. |
| 71 | 853 * |
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854 * <p> |
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855 * This method is not intended to be overridden by subclasses. |
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856 * </p> |
| 71 | 857 * |
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858 * @return Returns whether this viewer is busy. |
| 71 | 859 * |
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860 * @since 3.4 |
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861 */ |
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862 public bool isBusy() { |
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863 return busy; |
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864 } |
| 10 | 865 } |