Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/TreeViewer.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 | 46a6e0e6ccd4 |
| children | 04b47443bb01 |
| rev | line source |
|---|---|
| 10 | 1 /******************************************************************************* |
| 90 | 2 * Copyright (c) 2004, 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> - concept of ViewerRow, | |
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11 * refactoring (bug 153993), bug 167323, 191468, 205419 |
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12 * Matthew Hall - bug 221988 |
| 10 | 13 * Port to the D programming language: |
| 14 * Frank Benoit <benoit@tionex.de> | |
| 15 *******************************************************************************/ | |
| 16 | |
| 17 module dwtx.jface.viewers.TreeViewer; | |
| 18 | |
| 19 import dwtx.jface.viewers.AbstractTreeViewer; | |
| 20 import dwtx.jface.viewers.TreeViewerRow; | |
| 21 import dwtx.jface.viewers.IBaseLabelProvider; | |
| 22 import dwtx.jface.viewers.ColumnViewerEditor; | |
| 23 import dwtx.jface.viewers.IContentProvider; | |
| 24 import dwtx.jface.viewers.TreeSelection; | |
| 25 import dwtx.jface.viewers.ViewerRow; | |
| 26 import dwtx.jface.viewers.ISelection; | |
| 27 import dwtx.jface.viewers.TreeViewerEditor; | |
| 28 import dwtx.jface.viewers.ColumnViewerEditorActivationStrategy; | |
| 29 import dwtx.jface.viewers.ColumnViewerEditorActivationEvent; | |
| 30 import dwtx.jface.viewers.ILazyTreeContentProvider; | |
| 31 import dwtx.jface.viewers.ILazyTreePathContentProvider; | |
| 32 import dwtx.jface.viewers.TreePath; | |
| 33 import dwtx.jface.viewers.TreeExpansionEvent; | |
| 34 import dwtx.jface.viewers.ViewerCell; | |
| 35 | |
| 36 import tango.util.collection.LinkSeq; | |
| 37 import tango.util.collection.model.Seq; | |
| 38 import tango.util.collection.model.SeqView; | |
| 39 | |
| 40 import dwt.DWT; | |
| 41 import dwt.events.DisposeEvent; | |
| 42 import dwt.events.DisposeListener; | |
| 43 import dwt.events.TreeEvent; | |
| 44 import dwt.events.TreeListener; | |
| 45 import dwt.graphics.Point; | |
| 46 import dwt.widgets.Composite; | |
| 47 import dwt.widgets.Control; | |
| 48 import dwt.widgets.Event; | |
| 49 import dwt.widgets.Item; | |
| 50 import dwt.widgets.Listener; | |
| 51 import dwt.widgets.Tree; | |
| 52 import dwt.widgets.TreeItem; | |
| 53 import dwt.widgets.Widget; | |
| 54 import dwtx.jface.util.Policy; | |
| 55 | |
| 56 import dwt.dwthelper.utils; | |
| 57 import dwt.dwthelper.Runnable; | |
| 58 | |
| 59 /** | |
| 60 * A concrete viewer based on an DWT <code>Tree</code> control. | |
| 61 * <p> | |
| 62 * This class is not intended to be subclassed outside the viewer framework. It | |
| 63 * is designed to be instantiated with a pre-existing DWT tree control and | |
| 64 * configured with a domain-specific content provider, label provider, element | |
| 65 * filter (optional), and element sorter (optional). | |
| 66 * </p> | |
| 67 * <p> | |
| 68 * Content providers for tree viewers must implement either the | |
| 69 * {@link ITreeContentProvider} interface, (as of 3.2) the | |
| 70 * {@link ILazyTreeContentProvider} interface, or (as of 3.3) the | |
| 71 * {@link ILazyTreePathContentProvider}. If the content provider is an | |
| 72 * <code>ILazyTreeContentProvider</code> or an | |
| 73 * <code>ILazyTreePathContentProvider</code>, the underlying Tree must be | |
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74 * created using the {@link DWT#VIRTUAL} style bit, the tree viewer will not |
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75 * support sorting or filtering, and hash lookup must be enabled by calling |
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76 * {@link #setUseHashlookup(bool)}. |
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77 * </p> |
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78 * <p> |
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79 * Users setting up an editable tree with more than 1 column <b>have</b> to pass the |
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80 * DWT.FULL_SELECTION style bit |
| 10 | 81 * </p> |
| 90 | 82 * @noextend This class is not intended to be subclassed by clients. |
| 10 | 83 */ |
| 84 public class TreeViewer : AbstractTreeViewer { | |
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85 alias AbstractTreeViewer.addTreeListener addTreeListener; |
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86 alias AbstractTreeViewer.getLabelProvider getLabelProvider; |
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87 alias AbstractTreeViewer.getSelection getSelection; |
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88 alias AbstractTreeViewer.preservingSelection preservingSelection; |
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89 alias AbstractTreeViewer.remove remove; |
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90 alias AbstractTreeViewer.setSelection setSelection; |
| 10 | 91 |
| 92 private static final String VIRTUAL_DISPOSE_KEY = Policy.JFACE | |
| 93 ~ ".DISPOSE_LISTENER"; //$NON-NLS-1$ | |
| 94 | |
| 95 /** | |
| 96 * This viewer's control. | |
| 97 */ | |
| 98 private Tree tree; | |
| 99 | |
| 100 /** | |
| 101 * Flag for whether the tree has been disposed of. | |
| 102 */ | |
| 103 private bool treeIsDisposed = false; | |
| 104 | |
| 105 private bool contentProviderIsLazy; | |
| 106 | |
| 107 private bool contentProviderIsTreeBased; | |
| 108 | |
| 109 /** | |
| 110 * The row object reused | |
| 111 */ | |
| 112 private TreeViewerRow cachedRow; | |
| 113 | |
| 114 /** | |
| 115 * true if we are inside a preservingSelection() call | |
| 116 */ | |
| 117 private bool preservingSelection_; | |
| 118 | |
| 119 /** | |
| 120 * Creates a tree viewer on a newly-created tree control under the given | |
| 121 * parent. The tree control is created using the DWT style bits | |
| 122 * <code>MULTI, H_SCROLL, V_SCROLL,</code> and <code>BORDER</code>. The | |
| 123 * viewer has no input, no content provider, a default label provider, no | |
| 124 * sorter, and no filters. | |
| 125 * | |
| 126 * @param parent | |
| 127 * the parent control | |
| 128 */ | |
| 129 public this(Composite parent) { | |
| 130 this(parent, DWT.MULTI | DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER); | |
| 131 } | |
| 132 | |
| 133 /** | |
| 134 * Creates a tree viewer on a newly-created tree control under the given | |
| 135 * parent. The tree control is created using the given DWT style bits. The | |
| 136 * viewer has no input, no content provider, a default label provider, no | |
| 137 * sorter, and no filters. | |
| 138 * | |
| 139 * @param parent | |
| 140 * the parent control | |
| 141 * @param style | |
| 142 * the DWT style bits used to create the tree. | |
| 143 */ | |
| 144 public this(Composite parent, int style) { | |
| 145 this(new Tree(parent, style)); | |
| 146 } | |
| 147 | |
| 148 /** | |
| 149 * Creates a tree viewer on the given tree control. The viewer has no input, | |
| 150 * no content provider, a default label provider, no sorter, and no filters. | |
| 151 * | |
| 152 * @param tree | |
| 153 * the tree control | |
| 154 */ | |
| 155 public this(Tree tree) { | |
| 156 super(); | |
| 157 this.tree = tree; | |
| 158 hookControl(tree); | |
| 159 } | |
| 160 | |
| 161 /* | |
| 162 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 163 */ | |
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164 protected override void addTreeListener(Control c, TreeListener listener) { |
| 10 | 165 (cast(Tree) c).addTreeListener(listener); |
| 166 } | |
| 167 | |
| 168 /* | |
| 169 * (non-Javadoc) | |
| 170 * | |
| 171 * @see dwtx.jface.viewers.ColumnViewer#getColumnViewerOwner(int) | |
| 172 */ | |
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173 protected override Widget getColumnViewerOwner(int columnIndex) { |
| 10 | 174 if (columnIndex < 0 || ( columnIndex > 0 && columnIndex >= getTree().getColumnCount() ) ) { |
| 175 return null; | |
| 176 } | |
| 177 | |
| 178 if (getTree().getColumnCount() is 0)// Hang it off the table if it | |
| 179 return getTree(); | |
| 180 | |
| 181 return getTree().getColumn(columnIndex); | |
| 182 } | |
| 183 | |
| 184 /* | |
| 185 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 186 */ | |
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187 protected override Item[] getChildren(Widget o) { |
| 10 | 188 if (auto ti = cast(TreeItem)o ) { |
| 189 return ti.getItems(); | |
| 190 } | |
| 191 if (auto t = cast(Tree)o ) { | |
| 192 return t.getItems(); | |
| 193 } | |
| 194 return null; | |
| 195 } | |
| 196 | |
| 197 /* | |
| 198 * (non-Javadoc) Method declared in Viewer. | |
| 199 */ | |
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200 public override Control getControl() { |
| 10 | 201 return tree; |
| 202 } | |
| 203 | |
| 204 /* | |
| 205 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 206 */ | |
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207 protected override bool getExpanded(Item item) { |
| 10 | 208 return (cast(TreeItem) item).getExpanded(); |
| 209 } | |
| 210 | |
| 211 /* | |
| 212 * (non-Javadoc) | |
| 213 * | |
| 214 * @see dwtx.jface.viewers.ColumnViewer#getItemAt(dwt.graphics.Point) | |
| 215 */ | |
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216 protected override Item getItemAt(Point p) { |
| 10 | 217 TreeItem[] selection = tree.getSelection(); |
| 218 | |
| 219 if( selection.length is 1 ) { | |
| 220 int columnCount = tree.getColumnCount(); | |
| 221 | |
| 222 for( int i = 0; i < columnCount; i++ ) { | |
| 223 if( selection[0].getBounds(i).contains(p) ) { | |
| 224 return selection[0]; | |
| 225 } | |
| 226 } | |
| 227 } | |
| 228 | |
| 229 return getTree().getItem(p); | |
| 230 } | |
| 231 | |
| 232 /* | |
| 233 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 234 */ | |
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235 protected override int getItemCount(Control widget) { |
| 10 | 236 return (cast(Tree) widget).getItemCount(); |
| 237 } | |
| 238 | |
| 239 /* | |
| 240 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 241 */ | |
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242 protected override int getItemCount(Item item) { |
| 10 | 243 return (cast(TreeItem) item).getItemCount(); |
| 244 } | |
| 245 | |
| 246 /* | |
| 247 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 248 */ | |
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249 protected override Item[] getItems(Item item) { |
| 10 | 250 return (cast(TreeItem) item).getItems(); |
| 251 } | |
| 252 | |
| 253 /** | |
| 254 * The tree viewer implementation of this <code>Viewer</code> framework | |
| 255 * method ensures that the given label provider is an instance of either | |
| 256 * <code>ITableLabelProvider</code> or <code>ILabelProvider</code>. If | |
| 257 * it is an <code>ITableLabelProvider</code>, then it provides a separate | |
| 258 * label text and image for each column. If it is an | |
| 259 * <code>ILabelProvider</code>, then it provides only the label text and | |
| 260 * image for the first column, and any remaining columns are blank. | |
| 261 */ | |
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262 public override IBaseLabelProvider getLabelProvider() { |
| 10 | 263 return super.getLabelProvider(); |
| 264 } | |
| 265 | |
| 266 /* | |
| 267 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 268 */ | |
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269 protected override Item getParentItem(Item item) { |
| 10 | 270 return (cast(TreeItem) item).getParentItem(); |
| 271 } | |
| 272 | |
| 273 /* | |
| 274 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 275 */ | |
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276 protected override Item[] getSelection(Control widget) { |
| 10 | 277 return (cast(Tree) widget).getSelection(); |
| 278 } | |
| 279 | |
| 280 /** | |
| 281 * Returns this tree viewer's tree control. | |
| 282 * | |
| 283 * @return the tree control | |
| 284 */ | |
| 285 public Tree getTree() { | |
| 286 return tree; | |
| 287 } | |
| 288 | |
| 289 /* | |
| 290 * (non-Javadoc) | |
| 291 * | |
| 292 * @see dwtx.jface.viewers.AbstractTreeViewer#hookControl(dwt.widgets.Control) | |
| 293 */ | |
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294 protected override void hookControl(Control control) { |
| 10 | 295 super.hookControl(control); |
| 296 Tree treeControl = cast(Tree) control; | |
| 297 | |
| 298 if ((treeControl.getStyle() & DWT.VIRTUAL) !is 0) { | |
| 299 treeControl.addDisposeListener(new class DisposeListener { | |
| 300 public void widgetDisposed(DisposeEvent e) { | |
| 301 treeIsDisposed = true; | |
| 302 unmapAllElements(); | |
| 303 } | |
| 304 }); | |
| 305 treeControl.addListener(DWT.SetData, new class Listener { | |
| 306 | |
| 307 public void handleEvent(Event event) { | |
| 308 if (contentProviderIsLazy) { | |
| 309 TreeItem item = cast(TreeItem) event.item; | |
| 310 TreeItem parentItem = item.getParentItem(); | |
| 311 int index = event.index; | |
| 312 virtualLazyUpdateWidget( | |
| 313 parentItem is null ? cast(Widget) getTree() | |
| 314 : parentItem, index); | |
| 315 } | |
| 316 } | |
| 317 | |
| 318 }); | |
| 319 } | |
| 320 } | |
| 321 | |
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322 protected override ColumnViewerEditor createViewerEditor() { |
| 10 | 323 return new TreeViewerEditor(this,null,new ColumnViewerEditorActivationStrategy(this),ColumnViewerEditor.DEFAULT); |
| 324 } | |
| 325 | |
| 326 /* | |
| 327 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 328 */ | |
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329 protected override Item newItem(Widget parent, int flags, int ix) { |
| 10 | 330 TreeItem item; |
| 331 | |
| 332 if ( cast(TreeItem)parent ) { | |
| 333 item = cast(TreeItem) createNewRowPart(getViewerRowFromItem(parent), | |
| 334 flags, ix).getItem(); | |
| 335 } else { | |
| 336 item = cast(TreeItem) createNewRowPart(null, flags, ix).getItem(); | |
| 337 } | |
| 338 | |
| 339 return item; | |
| 340 } | |
| 341 | |
| 342 /* | |
| 343 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 344 */ | |
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345 protected override void removeAll(Control widget) { |
| 10 | 346 (cast(Tree) widget).removeAll(); |
| 347 } | |
| 348 | |
| 349 /* | |
| 350 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 351 */ | |
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352 protected override void setExpanded(Item node, bool expand) { |
| 10 | 353 (cast(TreeItem) node).setExpanded(expand); |
| 354 if (contentProviderIsLazy) { | |
| 355 // force repaints to happen | |
| 356 getControl().update(); | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 /* | |
| 361 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 362 */ | |
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363 protected override void setSelection(SeqView!(Item) items) { |
| 10 | 364 |
| 365 Item[] current = getSelection(getTree()); | |
| 366 | |
| 367 // Don't bother resetting the same selection | |
| 368 if (isSameSelection(items, current)) { | |
| 369 return; | |
| 370 } | |
| 371 | |
| 372 getTree().setSelection( cast(TreeItem[]) items.toArray()); | |
| 373 } | |
| 374 | |
| 375 /* | |
| 376 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 377 */ | |
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378 protected override void showItem(Item item) { |
| 10 | 379 getTree().showItem(cast(TreeItem) item); |
| 380 } | |
| 381 | |
| 382 /* | |
| 383 * (non-Javadoc) | |
| 384 * | |
| 385 * @see dwtx.jface.viewers.AbstractTreeViewer#getChild(dwt.widgets.Widget, | |
| 386 * int) | |
| 387 */ | |
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388 protected override Item getChild(Widget widget, int index) { |
| 10 | 389 if (auto ti = cast(TreeItem)widget ) { |
| 390 return ti.getItem(index); | |
| 391 } | |
| 392 if (auto t = cast(Tree)widget ) { | |
| 393 return t.getItem(index); | |
| 394 } | |
| 395 return null; | |
| 396 } | |
| 397 | |
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398 protected override void assertContentProviderType(IContentProvider provider) { |
| 10 | 399 if ( null !is cast(ILazyTreeContentProvider)provider |
| 400 || null !is cast(ILazyTreePathContentProvider)provider ) { | |
| 401 return; | |
| 402 } | |
| 403 super.assertContentProviderType(provider); | |
| 404 } | |
| 405 | |
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406 protected override Object[] getRawChildren(Object parent) { |
| 10 | 407 if (contentProviderIsLazy) { |
| 408 return new Object[0]; | |
| 409 } | |
| 410 return super.getRawChildren(parent); | |
| 411 } | |
| 412 | |
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413 override void preservingSelection(Runnable updateCode, bool reveal) { |
| 10 | 414 if (preservingSelection_){ |
| 415 // avoid preserving the selection if called reentrantly, | |
| 416 // see bug 172640 | |
| 417 updateCode.run(); | |
| 418 return; | |
| 419 } | |
| 420 preservingSelection_ = true; | |
| 421 try { | |
| 422 super.preservingSelection(updateCode, reveal); | |
| 423 } finally { | |
| 424 preservingSelection_ = false; | |
| 425 } | |
| 426 } | |
| 427 | |
| 428 /** | |
| 429 * For a TreeViewer with a tree with the VIRTUAL style bit set, set the | |
| 430 * number of children of the given element or tree path. To set the number | |
| 431 * of children of the invisible root of the tree, you can pass the input | |
| 432 * object or an empty tree path. | |
| 433 * | |
| 434 * @param elementOrTreePath | |
| 435 * the element, or tree path | |
| 436 * @param count | |
| 437 * | |
| 438 * @since 3.2 | |
| 439 */ | |
| 440 public void setChildCount(Object elementOrTreePath, int count) { | |
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441 if (checkBusy()) |
| 10 | 442 return; |
| 39 | 443 preservingSelection(new class(elementOrTreePath,count) Runnable { |
| 10 | 444 Object elementOrTreePath_; |
| 445 int count_; | |
| 39 | 446 this(Object a,int b){ |
| 447 elementOrTreePath_=a; | |
| 448 count_=b; | |
| 10 | 449 } |
| 450 public void run() { | |
| 451 if (internalIsInputOrEmptyPath(elementOrTreePath_)) { | |
| 452 getTree().setItemCount(count_); | |
| 453 return; | |
| 454 } | |
| 455 Widget[] items = internalFindItems(elementOrTreePath_); | |
| 456 for (int i = 0; i < items.length; i++) { | |
| 457 TreeItem treeItem = cast(TreeItem) items[i]; | |
| 458 treeItem.setItemCount(count_); | |
| 459 } | |
| 460 } | |
| 461 }); | |
| 462 } | |
| 463 | |
| 464 /** | |
| 465 * For a TreeViewer with a tree with the VIRTUAL style bit set, replace the | |
| 466 * given parent's child at index with the given element. If the given parent | |
| 467 * is this viewer's input or an empty tree path, this will replace the root | |
| 468 * element at the given index. | |
| 469 * <p> | |
| 470 * This method should be called by implementers of ILazyTreeContentProvider | |
| 471 * to populate this viewer. | |
| 472 * </p> | |
| 473 * | |
| 474 * @param parentElementOrTreePath | |
| 475 * the parent of the element that should be updated, or the tree | |
| 476 * path to that parent | |
| 477 * @param index | |
| 478 * the index in the parent's children | |
| 479 * @param element | |
| 480 * the new element | |
| 481 * | |
| 482 * @see #setChildCount(Object, int) | |
| 483 * @see ILazyTreeContentProvider | |
| 484 * @see ILazyTreePathContentProvider | |
| 485 * | |
| 486 * @since 3.2 | |
| 487 */ | |
| 488 public void replace(Object parentElementOrTreePath, int index, | |
| 489 Object element) { | |
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490 if (checkBusy()) |
| 10 | 491 return; |
| 492 Item[] selectedItems = getSelection(getControl()); | |
| 493 TreeSelection selection = cast(TreeSelection) getSelection(); | |
| 494 Widget[] itemsToDisassociate; | |
| 495 if (auto tp = cast(TreePath)parentElementOrTreePath ) { | |
| 496 TreePath elementPath = tp | |
| 497 .createChildPath(element); | |
| 498 itemsToDisassociate = internalFindItems(elementPath); | |
| 499 } else { | |
| 500 itemsToDisassociate = internalFindItems(element); | |
| 501 } | |
| 502 if (internalIsInputOrEmptyPath(parentElementOrTreePath)) { | |
| 503 if (index < tree.getItemCount()) { | |
| 504 TreeItem item = tree.getItem(index); | |
| 505 selection = adjustSelectionForReplace(selectedItems, selection, item, element, getRoot()); | |
| 506 // disassociate any different item that represents the | |
| 507 // same element under the same parent (the tree) | |
| 508 for (int i = 0; i < itemsToDisassociate.length; i++) { | |
| 509 if (auto itemToDisassociate = cast(TreeItem)itemsToDisassociate[i]) { | |
| 510 if (itemToDisassociate !is item | |
| 511 && itemToDisassociate.getParentItem() is null) { | |
| 512 int indexToDisassociate = getTree().indexOf( | |
| 513 itemToDisassociate); | |
| 514 disassociate(itemToDisassociate); | |
| 515 getTree().clear(indexToDisassociate, true); | |
| 516 } | |
| 517 } | |
| 518 } | |
| 519 Object oldData = item.getData(); | |
| 520 updateItem(item, element); | |
| 521 if (!/+TreeViewer.this.+/opEquals(oldData, element)) { | |
| 522 item.clearAll(true); | |
| 523 } | |
| 524 } | |
| 525 } else { | |
| 526 Widget[] parentItems = internalFindItems(parentElementOrTreePath); | |
| 527 for (int i = 0; i < parentItems.length; i++) { | |
| 528 TreeItem parentItem = cast(TreeItem) parentItems[i]; | |
| 529 if (index < parentItem.getItemCount()) { | |
| 530 TreeItem item = parentItem.getItem(index); | |
| 531 selection = adjustSelectionForReplace(selectedItems, selection, item, element, parentItem.getData()); | |
| 532 // disassociate any different item that represents the | |
| 533 // same element under the same parent (the tree) | |
| 534 for (int j = 0; j < itemsToDisassociate.length; j++) { | |
| 535 if ( auto itemToDisassociate = cast(TreeItem)itemsToDisassociate[j] ) { | |
| 536 if (itemToDisassociate !is item | |
| 537 && itemToDisassociate.getParentItem() is parentItem) { | |
| 538 int indexToDisaccociate = parentItem | |
| 539 .indexOf(itemToDisassociate); | |
| 540 disassociate(itemToDisassociate); | |
| 541 parentItem.clear(indexToDisaccociate, true); | |
| 542 } | |
| 543 } | |
| 544 } | |
| 545 Object oldData = item.getData(); | |
| 546 updateItem(item, element); | |
| 547 if (!/+TreeViewer.this.+/opEquals(oldData, element)) { | |
| 548 item.clearAll(true); | |
| 549 } | |
| 550 } | |
| 551 } | |
| 552 } | |
| 553 // Restore the selection if we are not already in a nested preservingSelection: | |
| 554 if (!preservingSelection_) { | |
| 555 setSelectionToWidget(selection, false); | |
| 556 // send out notification if old and new differ | |
| 557 ISelection newSelection = getSelection(); | |
| 558 if (!(cast(Object)newSelection).opEquals(cast(Object)selection)) { | |
| 559 handleInvalidSelection(selection, newSelection); | |
| 560 } | |
| 561 } | |
| 562 } | |
| 563 | |
| 564 /** | |
| 565 * Fix for bug 185673: If the currently replaced item was selected, add it | |
| 566 * to the selection that is being restored. Only do this if its getData() is | |
| 567 * currently null | |
| 568 * | |
| 569 * @param selectedItems | |
| 570 * @param selection | |
| 571 * @param item | |
| 572 * @param element | |
| 573 * @return | |
| 574 */ | |
| 575 private TreeSelection adjustSelectionForReplace(Item[] selectedItems, | |
| 576 TreeSelection selection, TreeItem item, Object element, Object parentElement) { | |
| 577 if (item.getData() !is null || selectedItems.length is selection.size() | |
| 578 || parentElement is null) { | |
| 579 // Don't do anything - we are not seeing an instance of bug 185673 | |
| 580 return selection; | |
| 581 } | |
| 582 for (int i = 0; i < selectedItems.length; i++) { | |
| 583 if (item is selectedItems[i]) { | |
| 584 // The current item was selected, but its data is null. | |
| 585 // The data will be replaced by the given element, so to keep | |
| 586 // it selected, we have to add it to the selection. | |
| 587 TreePath[] originalPaths = selection.getPaths(); | |
| 588 int length_ = originalPaths.length; | |
| 589 TreePath[] paths = new TreePath[length_ + 1]; | |
| 590 System.arraycopy(originalPaths, 0, paths, 0, length_); | |
| 591 // set the element temporarily so that we can call getTreePathFromItem | |
| 592 item.setData(element); | |
| 593 paths[length_] = getTreePathFromItem(item); | |
| 594 item.setData(null); | |
| 595 return new TreeSelection(paths, selection.getElementComparer()); | |
| 596 } | |
| 597 } | |
| 598 // The item was not selected, return the given selection | |
| 599 return selection; | |
| 600 } | |
| 601 | |
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602 public override bool isExpandable(Object element) { |
| 10 | 603 if (contentProviderIsLazy) { |
| 604 TreeItem treeItem = cast(TreeItem) internalExpand(element, false); | |
| 605 if (treeItem is null) { | |
| 606 return false; | |
| 607 } | |
| 608 virtualMaterializeItem(treeItem); | |
| 609 return treeItem.getItemCount() > 0; | |
| 610 } | |
| 611 return super.isExpandable(element); | |
| 612 } | |
| 613 | |
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614 protected override Object getParentElement(Object element) { |
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615 bool oldBusy = isBusy(); |
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616 setBusy(true); |
| 10 | 617 try { |
| 618 if (contentProviderIsLazy && !contentProviderIsTreeBased && !(cast(TreePath)element )) { | |
| 619 ILazyTreeContentProvider lazyTreeContentProvider = cast(ILazyTreeContentProvider) getContentProvider(); | |
| 620 return lazyTreeContentProvider.getParent(element); | |
| 621 } | |
| 622 if (contentProviderIsLazy && contentProviderIsTreeBased && !(cast(TreePath)element )) { | |
| 623 ILazyTreePathContentProvider lazyTreePathContentProvider = cast(ILazyTreePathContentProvider) getContentProvider(); | |
| 624 TreePath[] parents = lazyTreePathContentProvider | |
| 625 .getParents(element); | |
| 626 if (parents !is null && parents.length > 0) { | |
| 627 return parents[0]; | |
| 628 } | |
| 629 } | |
| 630 return super.getParentElement(element); | |
| 631 } finally { | |
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632 setBusy(oldBusy); |
| 10 | 633 } |
| 634 } | |
| 635 | |
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636 protected override void createChildren(Widget widget) { |
| 10 | 637 if (contentProviderIsLazy) { |
| 638 Object element = widget.getData(); | |
| 639 if (element is null && cast(TreeItem)widget ) { | |
| 640 // parent has not been materialized | |
| 641 virtualMaterializeItem(cast(TreeItem) widget); | |
| 642 // try getting the element now that updateElement was called | |
| 643 element = widget.getData(); | |
| 644 } | |
| 645 if (element is null) { | |
| 646 // give up because the parent is still not materialized | |
| 647 return; | |
| 648 } | |
| 649 Item[] children = getChildren(widget); | |
| 650 if (children.length is 1 && children[0].getData() is null) { | |
| 651 // found a dummy node | |
| 652 virtualLazyUpdateChildCount(widget, children.length); | |
| 653 children = getChildren(widget); | |
| 654 } | |
| 655 // touch all children to make sure they are materialized | |
| 656 for (int i = 0; i < children.length; i++) { | |
| 657 if (children[i].getData() is null) { | |
| 658 virtualLazyUpdateWidget(widget, i); | |
| 659 } | |
| 660 } | |
| 661 return; | |
| 662 } | |
| 663 super.createChildren(widget); | |
| 664 } | |
| 665 | |
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666 protected override void internalAdd(Widget widget, Object parentElement, |
| 10 | 667 Object[] childElements) { |
| 668 if (contentProviderIsLazy) { | |
| 669 if (auto ti = cast(TreeItem)widget ) { | |
| 670 int count = ti.getItemCount() + childElements.length; | |
| 671 ti.setItemCount(count); | |
| 672 ti.clearAll(false); | |
| 673 } else { | |
| 674 Tree t = cast(Tree) widget; | |
| 675 t.setItemCount(t.getItemCount() + childElements.length); | |
| 676 t.clearAll(false); | |
| 677 } | |
| 678 return; | |
| 679 } | |
| 680 super.internalAdd(widget, parentElement, childElements); | |
| 681 } | |
| 682 | |
| 683 private void virtualMaterializeItem(TreeItem treeItem) { | |
| 684 if (treeItem.getData() !is null) { | |
| 685 // already materialized | |
| 686 return; | |
| 687 } | |
| 688 if (!contentProviderIsLazy) { | |
| 689 return; | |
| 690 } | |
| 691 int index; | |
| 692 Widget parent = treeItem.getParentItem(); | |
| 693 if (parent is null) { | |
| 694 parent = treeItem.getParent(); | |
| 695 } | |
| 696 Object parentElement = parent.getData(); | |
| 697 if (parentElement !is null) { | |
| 698 if ( auto t = cast(Tree)parent ) { | |
| 699 index = t.indexOf(treeItem); | |
| 700 } else { | |
| 701 index = (cast(TreeItem) parent).indexOf(treeItem); | |
| 702 } | |
| 703 virtualLazyUpdateWidget(parent, index); | |
| 704 } | |
| 705 } | |
| 706 | |
| 707 /* | |
| 708 * (non-Javadoc) | |
| 709 * | |
| 710 * @see dwtx.jface.viewers.AbstractTreeViewer#internalRefreshStruct(dwt.widgets.Widget, | |
| 711 * java.lang.Object, bool) | |
| 712 */ | |
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713 protected override void internalRefreshStruct(Widget widget, Object element, |
| 10 | 714 bool updateLabels) { |
| 715 if (contentProviderIsLazy) { | |
| 716 // clear all starting with the given widget | |
| 717 if (auto t = cast(Tree)widget ) { | |
| 718 t.clearAll(true); | |
| 719 } else if (cast(TreeItem)widget ) { | |
| 720 (cast(TreeItem) widget).clearAll(true); | |
| 721 } | |
| 722 int index = 0; | |
| 723 Widget parent = null; | |
| 724 if (auto treeItem = cast(TreeItem)widget ) { | |
| 725 parent = treeItem.getParentItem(); | |
| 726 if (parent is null) { | |
| 727 parent = treeItem.getParent(); | |
| 728 } | |
| 729 if (cast(Tree)parent ) { | |
| 730 index = (cast(Tree) parent).indexOf(treeItem); | |
| 731 } else { | |
| 732 index = (cast(TreeItem) parent).indexOf(treeItem); | |
| 733 } | |
| 734 } | |
| 735 virtualRefreshExpandedItems(parent, widget, element, index); | |
| 736 return; | |
| 737 } | |
| 738 super.internalRefreshStruct(widget, element, updateLabels); | |
| 739 } | |
| 740 | |
| 741 /** | |
| 742 * Traverses the visible (expanded) part of the tree and updates child | |
| 743 * counts. | |
| 744 * | |
| 745 * @param parent the parent of the widget, or <code>null</code> if the widget is the tree | |
| 746 * @param widget | |
| 747 * @param element | |
| 748 * @param index the index of the widget in the children array of its parent, or 0 if the widget is the tree | |
| 749 */ | |
| 750 private void virtualRefreshExpandedItems(Widget parent, Widget widget, Object element, int index) { | |
| 751 if ( cast(Tree)widget ) { | |
| 752 if (element is null) { | |
| 753 (cast(Tree) widget).setItemCount(0); | |
| 754 return; | |
| 755 } | |
| 756 virtualLazyUpdateChildCount(widget, getChildren(widget).length); | |
| 757 } else if ((cast(TreeItem) widget).getExpanded()) { | |
| 758 // prevent SetData callback | |
| 759 (cast(TreeItem)widget).setText(" "); //$NON-NLS-1$ | |
| 760 virtualLazyUpdateWidget(parent, index); | |
| 761 } else { | |
| 762 return; | |
| 763 } | |
| 764 Item[] items = getChildren(widget); | |
| 765 for (int i = 0; i < items.length; i++) { | |
| 766 Item item = items[i]; | |
| 767 Object data = item.getData(); | |
| 768 virtualRefreshExpandedItems(widget, item, data, i); | |
| 769 } | |
| 770 } | |
| 771 | |
| 772 /* | |
| 773 * To unmap elements correctly, we need to register a dispose listener with | |
| 774 * the item if the tree is virtual. | |
| 775 */ | |
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776 protected override void mapElement(Object element, Widget item) { |
| 10 | 777 super.mapElement(element, item); |
| 778 // make sure to unmap elements if the tree is virtual | |
| 779 if ((getTree().getStyle() & DWT.VIRTUAL) !is 0) { | |
| 780 // only add a dispose listener if item hasn't already on assigned | |
| 781 // because it is reused | |
| 782 if (item.getData(VIRTUAL_DISPOSE_KEY) is null) { | |
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783 item.setData(VIRTUAL_DISPOSE_KEY, Boolean.TRUE); |
| 39 | 784 item.addDisposeListener(new class(item) DisposeListener { |
| 10 | 785 Widget item_; |
| 39 | 786 this(Widget a){ |
| 787 item_=a; | |
| 10 | 788 } |
| 789 public void widgetDisposed(DisposeEvent e) { | |
| 790 if (!treeIsDisposed) { | |
| 791 Object data = item_.getData(); | |
| 792 if (usingElementMap() && data !is null) { | |
| 793 unmapElement(data, item_); | |
| 794 } | |
| 795 } | |
| 796 } | |
| 797 }); | |
| 798 } | |
| 799 } | |
| 800 } | |
| 801 | |
| 802 /* | |
| 803 * (non-Javadoc) | |
| 804 * | |
| 805 * @see dwtx.jface.viewers.ColumnViewer#getRowPartFromItem(dwt.widgets.Widget) | |
| 806 */ | |
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807 protected override ViewerRow getViewerRowFromItem(Widget item) { |
| 10 | 808 if( cachedRow is null ) { |
| 809 cachedRow = new TreeViewerRow(cast(TreeItem) item); | |
| 810 } else { | |
| 811 cachedRow.setItem(cast(TreeItem) item); | |
| 812 } | |
| 813 | |
| 814 return cachedRow; | |
| 815 } | |
| 816 | |
| 817 /** | |
| 818 * Create a new ViewerRow at rowIndex | |
| 819 * | |
| 820 * @param parent | |
| 821 * @param style | |
| 822 * @param rowIndex | |
| 823 * @return ViewerRow | |
| 824 */ | |
| 825 private ViewerRow createNewRowPart(ViewerRow parent, int style, int rowIndex) { | |
| 826 if (parent is null) { | |
| 827 if (rowIndex >= 0) { | |
| 828 return getViewerRowFromItem(new TreeItem(tree, style, rowIndex)); | |
| 829 } | |
| 830 return getViewerRowFromItem(new TreeItem(tree, style)); | |
| 831 } | |
| 832 | |
| 833 if (rowIndex >= 0) { | |
| 834 return getViewerRowFromItem(new TreeItem(cast(TreeItem) parent.getItem(), | |
| 835 DWT.NONE, rowIndex)); | |
| 836 } | |
| 837 | |
| 838 return getViewerRowFromItem(new TreeItem(cast(TreeItem) parent.getItem(), | |
| 839 DWT.NONE)); | |
| 840 } | |
| 841 | |
| 842 /* | |
| 843 * (non-Javadoc) | |
| 844 * | |
| 845 * @see dwtx.jface.viewers.AbstractTreeViewer#internalInitializeTree(dwt.widgets.Control) | |
| 846 */ | |
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847 protected override void internalInitializeTree(Control widget) { |
| 10 | 848 if (contentProviderIsLazy) { |
| 849 if (cast(Tree)widget && widget.getData() !is null) { | |
| 850 virtualLazyUpdateChildCount(widget, 0); | |
| 851 return; | |
| 852 } | |
| 853 } | |
| 854 super.internalInitializeTree(tree); | |
| 855 } | |
| 856 | |
| 857 /* | |
| 858 * (non-Javadoc) | |
| 859 * | |
| 860 * @see dwtx.jface.viewers.AbstractTreeViewer#updatePlus(dwt.widgets.Item, | |
| 861 * java.lang.Object) | |
| 862 */ | |
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863 protected override void updatePlus(Item item, Object element) { |
| 10 | 864 if (contentProviderIsLazy) { |
| 865 Object data = item.getData(); | |
| 866 int itemCount = 0; | |
| 867 if (data !is null) { | |
| 868 // item is already materialized | |
| 869 itemCount = (cast(TreeItem) item).getItemCount(); | |
| 870 } | |
| 871 virtualLazyUpdateHasChildren(item, itemCount); | |
| 872 } else { | |
| 873 super.updatePlus(item, element); | |
| 874 } | |
| 875 } | |
| 876 | |
| 877 /** | |
| 878 * Removes the element at the specified index of the parent. The selection is updated if required. | |
| 879 * | |
| 880 * @param parentOrTreePath the parent element, the input element, or a tree path to the parent element | |
| 881 * @param index child index | |
| 882 * @since 3.3 | |
| 883 */ | |
| 884 public void remove(Object parentOrTreePath_, int index_) { | |
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885 if (checkBusy()) |
| 10 | 886 return; |
| 39 | 887 preservingSelection(new class((cast(TreeSelection) getSelection()).getPaths(),parentOrTreePath_,index_) Runnable { |
| 10 | 888 Seq!(TreePath) oldSelection; |
| 889 Object parentOrTreePath; | |
| 890 int index; | |
| 39 | 891 this(TreePath[] a,Object b,int c){ |
| 892 parentOrTreePath=b; | |
| 893 index=c; | |
| 10 | 894 oldSelection = new LinkSeq!(TreePath); |
| 39 | 895 foreach( p; a){ |
| 10 | 896 oldSelection.append( p ); |
| 897 } | |
| 898 } | |
| 899 public void run() { | |
| 900 TreePath removedPath = null; | |
| 901 if (internalIsInputOrEmptyPath(parentOrTreePath)) { | |
| 902 Tree tree = cast(Tree) getControl(); | |
| 903 if (index < tree.getItemCount()) { | |
| 904 TreeItem item = tree.getItem(index); | |
| 905 if (item.getData() !is null) { | |
| 906 removedPath = getTreePathFromItem(item); | |
| 907 disassociate(item); | |
| 908 } | |
| 909 item.dispose(); | |
| 910 } | |
| 911 } else { | |
| 912 Widget[] parentItems = internalFindItems(parentOrTreePath); | |
| 913 for (int i = 0; i < parentItems.length; i++) { | |
| 914 TreeItem parentItem = cast(TreeItem) parentItems[i]; | |
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915 if (parentItem.isDisposed()) |
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916 continue; |
| 10 | 917 if (index < parentItem.getItemCount()) { |
| 918 TreeItem item = parentItem.getItem(index); | |
| 919 if (item.getData() !is null) { | |
| 920 removedPath = getTreePathFromItem(item); | |
| 921 disassociate(item); | |
| 922 } | |
| 923 item.dispose(); | |
| 924 } | |
| 925 } | |
| 926 } | |
| 927 if (removedPath !is null) { | |
| 928 bool removed = false; | |
| 929 int delIdx = 0; | |
| 930 foreach ( path; oldSelection.dup ) { | |
| 931 if (path.startsWith(removedPath, getComparer())) { | |
| 932 oldSelection.removeAt(delIdx); | |
| 933 removed = true; | |
| 934 } | |
| 935 delIdx++; | |
| 936 } | |
| 937 if (removed) { | |
| 938 setSelection(new TreeSelection( | |
| 939 oldSelection.toArray(), getComparer()), | |
| 940 false); | |
| 941 } | |
| 942 | |
| 943 } | |
| 944 } | |
| 945 }); | |
| 946 } | |
| 947 | |
| 948 /* (non-Javadoc) | |
| 949 * @see dwtx.jface.viewers.AbstractTreeViewer#handleTreeExpand(dwt.events.TreeEvent) | |
| 950 */ | |
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951 protected override void handleTreeExpand(TreeEvent event) { |
| 10 | 952 if (contentProviderIsLazy) { |
| 953 if (event.item.getData() !is null) { | |
| 954 Item[] children = getChildren(event.item); | |
| 955 if (children.length is 1 && children[0].getData() is null) { | |
| 956 // we have a dummy child node, ask for an updated child | |
| 957 // count | |
| 958 virtualLazyUpdateChildCount(event.item, children.length); | |
| 959 } | |
| 960 fireTreeExpanded(new TreeExpansionEvent(this, event.item | |
| 961 .getData())); | |
| 962 } | |
| 963 return; | |
| 964 } | |
| 965 super.handleTreeExpand(event); | |
| 966 } | |
| 967 | |
| 968 /* (non-Javadoc) | |
| 969 * @see dwtx.jface.viewers.AbstractTreeViewer#setContentProvider(dwtx.jface.viewers.IContentProvider) | |
| 970 */ | |
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971 public override void setContentProvider(IContentProvider provider) { |
| 10 | 972 contentProviderIsLazy = (cast(ILazyTreeContentProvider)provider ) |
| 973 || (cast(ILazyTreePathContentProvider)provider ); | |
| 974 contentProviderIsTreeBased = null !is cast(ILazyTreePathContentProvider)provider ; | |
| 975 super.setContentProvider(provider); | |
| 976 } | |
| 977 | |
| 978 /** | |
| 979 * For a TreeViewer with a tree with the VIRTUAL style bit set, inform the | |
| 980 * viewer about whether the given element or tree path has children. Avoid | |
| 981 * calling this method if the number of children has already been set. | |
| 982 * | |
| 983 * @param elementOrTreePath | |
| 984 * the element, or tree path | |
| 985 * @param hasChildren | |
| 986 * | |
| 987 * @since 3.3 | |
| 988 */ | |
| 989 public void setHasChildren(Object elementOrTreePath_, bool hasChildren_) { | |
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990 if (checkBusy()) |
| 10 | 991 return; |
| 39 | 992 preservingSelection(new class(elementOrTreePath_,hasChildren_) Runnable { |
| 10 | 993 Object elementOrTreePath; |
| 994 bool hasChildren; | |
| 39 | 995 this(Object a,bool b){ |
| 996 elementOrTreePath=a; | |
| 997 hasChildren=b; | |
| 10 | 998 } |
| 999 public void run() { | |
| 1000 if (internalIsInputOrEmptyPath(elementOrTreePath)) { | |
| 1001 if (hasChildren) { | |
| 1002 virtualLazyUpdateChildCount(getTree(), | |
| 1003 getChildren(getTree()).length); | |
| 1004 } else { | |
| 1005 setChildCount(elementOrTreePath, 0); | |
| 1006 } | |
| 1007 return; | |
| 1008 } | |
| 1009 Widget[] items = internalFindItems(elementOrTreePath); | |
| 1010 for (int i = 0; i < items.length; i++) { | |
| 1011 TreeItem item = cast(TreeItem) items[i]; | |
| 1012 if (!hasChildren) { | |
| 1013 item.setItemCount(0); | |
| 1014 } else { | |
| 1015 if (!item.getExpanded()) { | |
| 1016 item.setItemCount(1); | |
| 1017 TreeItem child = item.getItem(0); | |
| 1018 if (child.getData() !is null) { | |
| 1019 disassociate(child); | |
| 1020 } | |
| 1021 item.clear(0, true); | |
| 1022 } else { | |
| 1023 virtualLazyUpdateChildCount(item, item.getItemCount()); | |
| 1024 } | |
| 1025 } | |
| 1026 } | |
| 1027 } | |
| 1028 }); | |
| 1029 } | |
| 1030 | |
| 1031 /** | |
| 1032 * Update the widget at index. | |
| 1033 * @param widget | |
| 1034 * @param index | |
| 1035 */ | |
| 1036 private void virtualLazyUpdateWidget(Widget widget, int index) { | |
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1037 bool oldBusy = isBusy(); |
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1038 setBusy(false); |
| 10 | 1039 try { |
| 1040 if (contentProviderIsTreeBased) { | |
| 1041 TreePath treePath; | |
| 1042 if ( auto i = cast(Item)widget ) { | |
| 1043 if (widget.getData() is null) { | |
| 1044 // we need to materialize the parent first | |
| 1045 // see bug 167668 | |
| 1046 // however, that would be too risky | |
| 1047 // see bug 182782 and bug 182598 | |
| 1048 // so we just ignore this call altogether | |
| 1049 // and don't do this: virtualMaterializeItem((TreeItem) widget); | |
| 1050 return; | |
| 1051 } | |
| 1052 treePath = getTreePathFromItem(i); | |
| 1053 } else { | |
| 1054 treePath = TreePath.EMPTY; | |
| 1055 } | |
| 1056 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1057 .updateElement(treePath, index); | |
| 1058 } else { | |
| 1059 (cast(ILazyTreeContentProvider) getContentProvider()).updateElement( | |
| 1060 widget.getData(), index); | |
| 1061 } | |
| 1062 } finally { | |
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1063 setBusy(oldBusy); |
| 10 | 1064 } |
| 1065 } | |
| 1066 | |
| 1067 /** | |
| 1068 * Update the child count | |
| 1069 * @param widget | |
| 1070 * @param currentChildCount | |
| 1071 */ | |
| 1072 private void virtualLazyUpdateChildCount(Widget widget, int currentChildCount) { | |
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1073 bool oldBusy = isBusy(); |
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1074 setBusy(false); |
| 10 | 1075 try { |
| 1076 if (contentProviderIsTreeBased) { | |
| 1077 TreePath treePath; | |
| 1078 if (cast(Item)widget ) { | |
| 1079 treePath = getTreePathFromItem(cast(Item) widget); | |
| 1080 } else { | |
| 1081 treePath = TreePath.EMPTY; | |
| 1082 } | |
| 1083 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1084 .updateChildCount(treePath, currentChildCount); | |
| 1085 } else { | |
| 1086 (cast(ILazyTreeContentProvider) getContentProvider()).updateChildCount(widget.getData(), currentChildCount); | |
| 1087 } | |
| 1088 } finally { | |
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1089 setBusy(oldBusy); |
| 10 | 1090 } |
| 1091 } | |
| 1092 | |
| 1093 /** | |
| 1094 * Update the item with the current child count. | |
| 1095 * @param item | |
| 1096 * @param currentChildCount | |
| 1097 */ | |
| 1098 private void virtualLazyUpdateHasChildren(Item item, int currentChildCount) { | |
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1099 bool oldBusy = isBusy(); |
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1100 setBusy(false); |
| 10 | 1101 try { |
| 1102 if (contentProviderIsTreeBased) { | |
| 1103 TreePath treePath; | |
| 1104 treePath = getTreePathFromItem(item); | |
| 1105 if (currentChildCount is 0) { | |
| 1106 // item is not expanded (but may have a plus currently) | |
| 1107 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1108 .updateHasChildren(treePath); | |
| 1109 } else { | |
| 1110 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1111 .updateChildCount(treePath, currentChildCount); | |
| 1112 } | |
| 1113 } else { | |
| 1114 (cast(ILazyTreeContentProvider) getContentProvider()).updateChildCount(item.getData(), currentChildCount); | |
| 1115 } | |
| 1116 } finally { | |
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1117 setBusy(oldBusy); |
| 10 | 1118 } |
| 1119 } | |
| 1120 | |
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1121 protected override void disassociate(Item item) { |
| 10 | 1122 if (contentProviderIsLazy) { |
| 1123 // avoid causing a callback: | |
| 1124 item.setText(" "); //$NON-NLS-1$ | |
| 1125 } | |
| 1126 super.disassociate(item); | |
| 1127 } | |
| 1128 | |
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1129 protected override int doGetColumnCount() { |
| 10 | 1130 return tree.getColumnCount(); |
| 1131 } | |
| 1132 | |
| 1133 /** | |
| 1134 * Sets a new selection for this viewer and optionally makes it visible. | |
| 1135 * <p> | |
| 1136 * <b>Currently the <code>reveal</code> parameter is not honored because | |
| 1137 * {@link Tree} does not provide an API to only select an item without | |
| 1138 * scrolling it into view</b> | |
| 1139 * </p> | |
| 1140 * | |
| 1141 * @param selection | |
| 1142 * the new selection | |
| 1143 * @param reveal | |
| 1144 * <code>true</code> if the selection is to be made visible, | |
| 1145 * and <code>false</code> otherwise | |
| 1146 */ | |
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1147 public override void setSelection(ISelection selection, bool reveal) { |
| 10 | 1148 super.setSelection(selection, reveal); |
| 1149 } | |
| 1150 | |
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1151 public override void editElement(Object element, int column) { |
| 10 | 1152 if( cast(TreePath)element ) { |
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1153 try { |
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1154 getControl().setRedraw(false); |
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1155 setSelection(new TreeSelection(cast(TreePath) element)); |
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1156 TreeItem[] items = tree.getSelection(); |
| 10 | 1157 |
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1158 if( items.length is 1 ) { |
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1159 ViewerRow row = getViewerRowFromItem(items[0]); |
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1160 |
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1161 if (row !is null) { |
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1162 ViewerCell cell = row.getCell(column); |
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1163 if (cell !is null) { |
| 10 | 1164 triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent(cell)); |
| 1165 } | |
| 1166 } | |
| 1167 } | |
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1168 } finally { |
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1169 getControl().setRedraw(true); |
| 10 | 1170 } |
| 1171 } else { | |
| 1172 super.editElement(element, column); | |
| 1173 } | |
| 1174 } | |
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1175 |
| 10 | 1176 } |