Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/TreeViewer.d @ 104:04b47443bb01
Reworked the collection uses to make use of a wrapper collection that is compatible to the Java Collections.
These new wrappers now use the tango.util.containers instead of the tango.util.collections.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Thu, 07 Aug 2008 15:01:33 +0200 |
| parents | 7ffeace6c47f |
| children |
| 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 | |
| 37 import dwt.DWT; | |
| 38 import dwt.events.DisposeEvent; | |
| 39 import dwt.events.DisposeListener; | |
| 40 import dwt.events.TreeEvent; | |
| 41 import dwt.events.TreeListener; | |
| 42 import dwt.graphics.Point; | |
| 43 import dwt.widgets.Composite; | |
| 44 import dwt.widgets.Control; | |
| 45 import dwt.widgets.Event; | |
| 46 import dwt.widgets.Item; | |
| 47 import dwt.widgets.Listener; | |
| 48 import dwt.widgets.Tree; | |
| 49 import dwt.widgets.TreeItem; | |
| 50 import dwt.widgets.Widget; | |
| 51 import dwtx.jface.util.Policy; | |
| 52 | |
| 53 import dwt.dwthelper.utils; | |
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54 import dwtx.dwtxhelper.Collection; |
| 10 | 55 import dwt.dwthelper.Runnable; |
| 56 | |
| 57 /** | |
| 58 * A concrete viewer based on an DWT <code>Tree</code> control. | |
| 59 * <p> | |
| 60 * This class is not intended to be subclassed outside the viewer framework. It | |
| 61 * is designed to be instantiated with a pre-existing DWT tree control and | |
| 62 * configured with a domain-specific content provider, label provider, element | |
| 63 * filter (optional), and element sorter (optional). | |
| 64 * </p> | |
| 65 * <p> | |
| 66 * Content providers for tree viewers must implement either the | |
| 67 * {@link ITreeContentProvider} interface, (as of 3.2) the | |
| 68 * {@link ILazyTreeContentProvider} interface, or (as of 3.3) the | |
| 69 * {@link ILazyTreePathContentProvider}. If the content provider is an | |
| 70 * <code>ILazyTreeContentProvider</code> or an | |
| 71 * <code>ILazyTreePathContentProvider</code>, the underlying Tree must be | |
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72 * created using the {@link DWT#VIRTUAL} style bit, the tree viewer will not |
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73 * support sorting or filtering, and hash lookup must be enabled by calling |
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74 * {@link #setUseHashlookup(bool)}. |
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75 * </p> |
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76 * <p> |
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77 * Users setting up an editable tree with more than 1 column <b>have</b> to pass the |
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78 * DWT.FULL_SELECTION style bit |
| 10 | 79 * </p> |
| 90 | 80 * @noextend This class is not intended to be subclassed by clients. |
| 10 | 81 */ |
| 82 public class TreeViewer : AbstractTreeViewer { | |
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83 alias AbstractTreeViewer.addTreeListener addTreeListener; |
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84 alias AbstractTreeViewer.getLabelProvider getLabelProvider; |
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85 alias AbstractTreeViewer.getSelection getSelection; |
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86 alias AbstractTreeViewer.preservingSelection preservingSelection; |
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87 alias AbstractTreeViewer.remove remove; |
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88 alias AbstractTreeViewer.setSelection setSelection; |
| 10 | 89 |
| 90 private static final String VIRTUAL_DISPOSE_KEY = Policy.JFACE | |
| 91 ~ ".DISPOSE_LISTENER"; //$NON-NLS-1$ | |
| 92 | |
| 93 /** | |
| 94 * This viewer's control. | |
| 95 */ | |
| 96 private Tree tree; | |
| 97 | |
| 98 /** | |
| 99 * Flag for whether the tree has been disposed of. | |
| 100 */ | |
| 101 private bool treeIsDisposed = false; | |
| 102 | |
| 103 private bool contentProviderIsLazy; | |
| 104 | |
| 105 private bool contentProviderIsTreeBased; | |
| 106 | |
| 107 /** | |
| 108 * The row object reused | |
| 109 */ | |
| 110 private TreeViewerRow cachedRow; | |
| 111 | |
| 112 /** | |
| 113 * true if we are inside a preservingSelection() call | |
| 114 */ | |
| 115 private bool preservingSelection_; | |
| 116 | |
| 117 /** | |
| 118 * Creates a tree viewer on a newly-created tree control under the given | |
| 119 * parent. The tree control is created using the DWT style bits | |
| 120 * <code>MULTI, H_SCROLL, V_SCROLL,</code> and <code>BORDER</code>. The | |
| 121 * viewer has no input, no content provider, a default label provider, no | |
| 122 * sorter, and no filters. | |
| 123 * | |
| 124 * @param parent | |
| 125 * the parent control | |
| 126 */ | |
| 127 public this(Composite parent) { | |
| 128 this(parent, DWT.MULTI | DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER); | |
| 129 } | |
| 130 | |
| 131 /** | |
| 132 * Creates a tree viewer on a newly-created tree control under the given | |
| 133 * parent. The tree control is created using the given DWT style bits. The | |
| 134 * viewer has no input, no content provider, a default label provider, no | |
| 135 * sorter, and no filters. | |
| 136 * | |
| 137 * @param parent | |
| 138 * the parent control | |
| 139 * @param style | |
| 140 * the DWT style bits used to create the tree. | |
| 141 */ | |
| 142 public this(Composite parent, int style) { | |
| 143 this(new Tree(parent, style)); | |
| 144 } | |
| 145 | |
| 146 /** | |
| 147 * Creates a tree viewer on the given tree control. The viewer has no input, | |
| 148 * no content provider, a default label provider, no sorter, and no filters. | |
| 149 * | |
| 150 * @param tree | |
| 151 * the tree control | |
| 152 */ | |
| 153 public this(Tree tree) { | |
| 154 super(); | |
| 155 this.tree = tree; | |
| 156 hookControl(tree); | |
| 157 } | |
| 158 | |
| 159 /* | |
| 160 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 161 */ | |
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162 protected override void addTreeListener(Control c, TreeListener listener) { |
| 10 | 163 (cast(Tree) c).addTreeListener(listener); |
| 164 } | |
| 165 | |
| 166 /* | |
| 167 * (non-Javadoc) | |
| 168 * | |
| 169 * @see dwtx.jface.viewers.ColumnViewer#getColumnViewerOwner(int) | |
| 170 */ | |
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171 protected override Widget getColumnViewerOwner(int columnIndex) { |
| 10 | 172 if (columnIndex < 0 || ( columnIndex > 0 && columnIndex >= getTree().getColumnCount() ) ) { |
| 173 return null; | |
| 174 } | |
| 175 | |
| 176 if (getTree().getColumnCount() is 0)// Hang it off the table if it | |
| 177 return getTree(); | |
| 178 | |
| 179 return getTree().getColumn(columnIndex); | |
| 180 } | |
| 181 | |
| 182 /* | |
| 183 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 184 */ | |
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185 protected override Item[] getChildren(Widget o) { |
| 10 | 186 if (auto ti = cast(TreeItem)o ) { |
| 187 return ti.getItems(); | |
| 188 } | |
| 189 if (auto t = cast(Tree)o ) { | |
| 190 return t.getItems(); | |
| 191 } | |
| 192 return null; | |
| 193 } | |
| 194 | |
| 195 /* | |
| 196 * (non-Javadoc) Method declared in Viewer. | |
| 197 */ | |
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198 public override Control getControl() { |
| 10 | 199 return tree; |
| 200 } | |
| 201 | |
| 202 /* | |
| 203 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 204 */ | |
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205 protected override bool getExpanded(Item item) { |
| 10 | 206 return (cast(TreeItem) item).getExpanded(); |
| 207 } | |
| 208 | |
| 209 /* | |
| 210 * (non-Javadoc) | |
| 211 * | |
| 212 * @see dwtx.jface.viewers.ColumnViewer#getItemAt(dwt.graphics.Point) | |
| 213 */ | |
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214 protected override Item getItemAt(Point p) { |
| 10 | 215 TreeItem[] selection = tree.getSelection(); |
| 216 | |
| 217 if( selection.length is 1 ) { | |
| 218 int columnCount = tree.getColumnCount(); | |
| 219 | |
| 220 for( int i = 0; i < columnCount; i++ ) { | |
| 221 if( selection[0].getBounds(i).contains(p) ) { | |
| 222 return selection[0]; | |
| 223 } | |
| 224 } | |
| 225 } | |
| 226 | |
| 227 return getTree().getItem(p); | |
| 228 } | |
| 229 | |
| 230 /* | |
| 231 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 232 */ | |
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233 protected override int getItemCount(Control widget) { |
| 10 | 234 return (cast(Tree) widget).getItemCount(); |
| 235 } | |
| 236 | |
| 237 /* | |
| 238 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 239 */ | |
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240 protected override int getItemCount(Item item) { |
| 10 | 241 return (cast(TreeItem) item).getItemCount(); |
| 242 } | |
| 243 | |
| 244 /* | |
| 245 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 246 */ | |
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247 protected override Item[] getItems(Item item) { |
| 10 | 248 return (cast(TreeItem) item).getItems(); |
| 249 } | |
| 250 | |
| 251 /** | |
| 252 * The tree viewer implementation of this <code>Viewer</code> framework | |
| 253 * method ensures that the given label provider is an instance of either | |
| 254 * <code>ITableLabelProvider</code> or <code>ILabelProvider</code>. If | |
| 255 * it is an <code>ITableLabelProvider</code>, then it provides a separate | |
| 256 * label text and image for each column. If it is an | |
| 257 * <code>ILabelProvider</code>, then it provides only the label text and | |
| 258 * image for the first column, and any remaining columns are blank. | |
| 259 */ | |
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260 public override IBaseLabelProvider getLabelProvider() { |
| 10 | 261 return super.getLabelProvider(); |
| 262 } | |
| 263 | |
| 264 /* | |
| 265 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 266 */ | |
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267 protected override Item getParentItem(Item item) { |
| 10 | 268 return (cast(TreeItem) item).getParentItem(); |
| 269 } | |
| 270 | |
| 271 /* | |
| 272 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 273 */ | |
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274 protected override Item[] getSelection(Control widget) { |
| 10 | 275 return (cast(Tree) widget).getSelection(); |
| 276 } | |
| 277 | |
| 278 /** | |
| 279 * Returns this tree viewer's tree control. | |
| 280 * | |
| 281 * @return the tree control | |
| 282 */ | |
| 283 public Tree getTree() { | |
| 284 return tree; | |
| 285 } | |
| 286 | |
| 287 /* | |
| 288 * (non-Javadoc) | |
| 289 * | |
| 290 * @see dwtx.jface.viewers.AbstractTreeViewer#hookControl(dwt.widgets.Control) | |
| 291 */ | |
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292 protected override void hookControl(Control control) { |
| 10 | 293 super.hookControl(control); |
| 294 Tree treeControl = cast(Tree) control; | |
| 295 | |
| 296 if ((treeControl.getStyle() & DWT.VIRTUAL) !is 0) { | |
| 297 treeControl.addDisposeListener(new class DisposeListener { | |
| 298 public void widgetDisposed(DisposeEvent e) { | |
| 299 treeIsDisposed = true; | |
| 300 unmapAllElements(); | |
| 301 } | |
| 302 }); | |
| 303 treeControl.addListener(DWT.SetData, new class Listener { | |
| 304 | |
| 305 public void handleEvent(Event event) { | |
| 306 if (contentProviderIsLazy) { | |
| 307 TreeItem item = cast(TreeItem) event.item; | |
| 308 TreeItem parentItem = item.getParentItem(); | |
| 309 int index = event.index; | |
| 310 virtualLazyUpdateWidget( | |
| 311 parentItem is null ? cast(Widget) getTree() | |
| 312 : parentItem, index); | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 }); | |
| 317 } | |
| 318 } | |
| 319 | |
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320 protected override ColumnViewerEditor createViewerEditor() { |
| 10 | 321 return new TreeViewerEditor(this,null,new ColumnViewerEditorActivationStrategy(this),ColumnViewerEditor.DEFAULT); |
| 322 } | |
| 323 | |
| 324 /* | |
| 325 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 326 */ | |
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327 protected override Item newItem(Widget parent, int flags, int ix) { |
| 10 | 328 TreeItem item; |
| 329 | |
| 330 if ( cast(TreeItem)parent ) { | |
| 331 item = cast(TreeItem) createNewRowPart(getViewerRowFromItem(parent), | |
| 332 flags, ix).getItem(); | |
| 333 } else { | |
| 334 item = cast(TreeItem) createNewRowPart(null, flags, ix).getItem(); | |
| 335 } | |
| 336 | |
| 337 return item; | |
| 338 } | |
| 339 | |
| 340 /* | |
| 341 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 342 */ | |
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343 protected override void removeAll(Control widget) { |
| 10 | 344 (cast(Tree) widget).removeAll(); |
| 345 } | |
| 346 | |
| 347 /* | |
| 348 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 349 */ | |
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350 protected override void setExpanded(Item node, bool expand) { |
| 10 | 351 (cast(TreeItem) node).setExpanded(expand); |
| 352 if (contentProviderIsLazy) { | |
| 353 // force repaints to happen | |
| 354 getControl().update(); | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 /* | |
| 359 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 360 */ | |
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361 protected override void setSelection(List items) { |
| 10 | 362 |
| 363 Item[] current = getSelection(getTree()); | |
| 364 | |
| 365 // Don't bother resetting the same selection | |
| 366 if (isSameSelection(items, current)) { | |
| 367 return; | |
| 368 } | |
| 369 | |
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370 getTree().setSelection( arraycast!(TreeItem)( items.toArray())); |
| 10 | 371 } |
| 372 | |
| 373 /* | |
| 374 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 375 */ | |
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376 protected override void showItem(Item item) { |
| 10 | 377 getTree().showItem(cast(TreeItem) item); |
| 378 } | |
| 379 | |
| 380 /* | |
| 381 * (non-Javadoc) | |
| 382 * | |
| 383 * @see dwtx.jface.viewers.AbstractTreeViewer#getChild(dwt.widgets.Widget, | |
| 384 * int) | |
| 385 */ | |
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386 protected override Item getChild(Widget widget, int index) { |
| 10 | 387 if (auto ti = cast(TreeItem)widget ) { |
| 388 return ti.getItem(index); | |
| 389 } | |
| 390 if (auto t = cast(Tree)widget ) { | |
| 391 return t.getItem(index); | |
| 392 } | |
| 393 return null; | |
| 394 } | |
| 395 | |
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396 protected override void assertContentProviderType(IContentProvider provider) { |
| 10 | 397 if ( null !is cast(ILazyTreeContentProvider)provider |
| 398 || null !is cast(ILazyTreePathContentProvider)provider ) { | |
| 399 return; | |
| 400 } | |
| 401 super.assertContentProviderType(provider); | |
| 402 } | |
| 403 | |
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404 protected override Object[] getRawChildren(Object parent) { |
| 10 | 405 if (contentProviderIsLazy) { |
| 406 return new Object[0]; | |
| 407 } | |
| 408 return super.getRawChildren(parent); | |
| 409 } | |
| 410 | |
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411 override void preservingSelection(Runnable updateCode, bool reveal) { |
| 10 | 412 if (preservingSelection_){ |
| 413 // avoid preserving the selection if called reentrantly, | |
| 414 // see bug 172640 | |
| 415 updateCode.run(); | |
| 416 return; | |
| 417 } | |
| 418 preservingSelection_ = true; | |
| 419 try { | |
| 420 super.preservingSelection(updateCode, reveal); | |
| 421 } finally { | |
| 422 preservingSelection_ = false; | |
| 423 } | |
| 424 } | |
| 425 | |
| 426 /** | |
| 427 * For a TreeViewer with a tree with the VIRTUAL style bit set, set the | |
| 428 * number of children of the given element or tree path. To set the number | |
| 429 * of children of the invisible root of the tree, you can pass the input | |
| 430 * object or an empty tree path. | |
| 431 * | |
| 432 * @param elementOrTreePath | |
| 433 * the element, or tree path | |
| 434 * @param count | |
| 435 * | |
| 436 * @since 3.2 | |
| 437 */ | |
| 438 public void setChildCount(Object elementOrTreePath, int count) { | |
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439 if (checkBusy()) |
| 10 | 440 return; |
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441 preservingSelection( dgRunnable((Object elementOrTreePath_, int count_) { |
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442 if (internalIsInputOrEmptyPath(elementOrTreePath_)) { |
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443 getTree().setItemCount(count_); |
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444 return; |
| 10 | 445 } |
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446 Widget[] items = internalFindItems(elementOrTreePath_); |
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447 for (int i = 0; i < items.length; i++) { |
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448 TreeItem treeItem = cast(TreeItem) items[i]; |
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449 treeItem.setItemCount(count_); |
| 10 | 450 } |
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451 }, elementOrTreePath,count )); |
| 10 | 452 } |
| 453 | |
| 454 /** | |
| 455 * For a TreeViewer with a tree with the VIRTUAL style bit set, replace the | |
| 456 * given parent's child at index with the given element. If the given parent | |
| 457 * is this viewer's input or an empty tree path, this will replace the root | |
| 458 * element at the given index. | |
| 459 * <p> | |
| 460 * This method should be called by implementers of ILazyTreeContentProvider | |
| 461 * to populate this viewer. | |
| 462 * </p> | |
| 463 * | |
| 464 * @param parentElementOrTreePath | |
| 465 * the parent of the element that should be updated, or the tree | |
| 466 * path to that parent | |
| 467 * @param index | |
| 468 * the index in the parent's children | |
| 469 * @param element | |
| 470 * the new element | |
| 471 * | |
| 472 * @see #setChildCount(Object, int) | |
| 473 * @see ILazyTreeContentProvider | |
| 474 * @see ILazyTreePathContentProvider | |
| 475 * | |
| 476 * @since 3.2 | |
| 477 */ | |
| 478 public void replace(Object parentElementOrTreePath, int index, | |
| 479 Object element) { | |
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480 if (checkBusy()) |
| 10 | 481 return; |
| 482 Item[] selectedItems = getSelection(getControl()); | |
| 483 TreeSelection selection = cast(TreeSelection) getSelection(); | |
| 484 Widget[] itemsToDisassociate; | |
| 485 if (auto tp = cast(TreePath)parentElementOrTreePath ) { | |
| 486 TreePath elementPath = tp | |
| 487 .createChildPath(element); | |
| 488 itemsToDisassociate = internalFindItems(elementPath); | |
| 489 } else { | |
| 490 itemsToDisassociate = internalFindItems(element); | |
| 491 } | |
| 492 if (internalIsInputOrEmptyPath(parentElementOrTreePath)) { | |
| 493 if (index < tree.getItemCount()) { | |
| 494 TreeItem item = tree.getItem(index); | |
| 495 selection = adjustSelectionForReplace(selectedItems, selection, item, element, getRoot()); | |
| 496 // disassociate any different item that represents the | |
| 497 // same element under the same parent (the tree) | |
| 498 for (int i = 0; i < itemsToDisassociate.length; i++) { | |
| 499 if (auto itemToDisassociate = cast(TreeItem)itemsToDisassociate[i]) { | |
| 500 if (itemToDisassociate !is item | |
| 501 && itemToDisassociate.getParentItem() is null) { | |
| 502 int indexToDisassociate = getTree().indexOf( | |
| 503 itemToDisassociate); | |
| 504 disassociate(itemToDisassociate); | |
| 505 getTree().clear(indexToDisassociate, true); | |
| 506 } | |
| 507 } | |
| 508 } | |
| 509 Object oldData = item.getData(); | |
| 510 updateItem(item, element); | |
| 511 if (!/+TreeViewer.this.+/opEquals(oldData, element)) { | |
| 512 item.clearAll(true); | |
| 513 } | |
| 514 } | |
| 515 } else { | |
| 516 Widget[] parentItems = internalFindItems(parentElementOrTreePath); | |
| 517 for (int i = 0; i < parentItems.length; i++) { | |
| 518 TreeItem parentItem = cast(TreeItem) parentItems[i]; | |
| 519 if (index < parentItem.getItemCount()) { | |
| 520 TreeItem item = parentItem.getItem(index); | |
| 521 selection = adjustSelectionForReplace(selectedItems, selection, item, element, parentItem.getData()); | |
| 522 // disassociate any different item that represents the | |
| 523 // same element under the same parent (the tree) | |
| 524 for (int j = 0; j < itemsToDisassociate.length; j++) { | |
| 525 if ( auto itemToDisassociate = cast(TreeItem)itemsToDisassociate[j] ) { | |
| 526 if (itemToDisassociate !is item | |
| 527 && itemToDisassociate.getParentItem() is parentItem) { | |
| 528 int indexToDisaccociate = parentItem | |
| 529 .indexOf(itemToDisassociate); | |
| 530 disassociate(itemToDisassociate); | |
| 531 parentItem.clear(indexToDisaccociate, true); | |
| 532 } | |
| 533 } | |
| 534 } | |
| 535 Object oldData = item.getData(); | |
| 536 updateItem(item, element); | |
| 537 if (!/+TreeViewer.this.+/opEquals(oldData, element)) { | |
| 538 item.clearAll(true); | |
| 539 } | |
| 540 } | |
| 541 } | |
| 542 } | |
| 543 // Restore the selection if we are not already in a nested preservingSelection: | |
| 544 if (!preservingSelection_) { | |
| 545 setSelectionToWidget(selection, false); | |
| 546 // send out notification if old and new differ | |
| 547 ISelection newSelection = getSelection(); | |
| 548 if (!(cast(Object)newSelection).opEquals(cast(Object)selection)) { | |
| 549 handleInvalidSelection(selection, newSelection); | |
| 550 } | |
| 551 } | |
| 552 } | |
| 553 | |
| 554 /** | |
| 555 * Fix for bug 185673: If the currently replaced item was selected, add it | |
| 556 * to the selection that is being restored. Only do this if its getData() is | |
| 557 * currently null | |
| 558 * | |
| 559 * @param selectedItems | |
| 560 * @param selection | |
| 561 * @param item | |
| 562 * @param element | |
| 563 * @return | |
| 564 */ | |
| 565 private TreeSelection adjustSelectionForReplace(Item[] selectedItems, | |
| 566 TreeSelection selection, TreeItem item, Object element, Object parentElement) { | |
| 567 if (item.getData() !is null || selectedItems.length is selection.size() | |
| 568 || parentElement is null) { | |
| 569 // Don't do anything - we are not seeing an instance of bug 185673 | |
| 570 return selection; | |
| 571 } | |
| 572 for (int i = 0; i < selectedItems.length; i++) { | |
| 573 if (item is selectedItems[i]) { | |
| 574 // The current item was selected, but its data is null. | |
| 575 // The data will be replaced by the given element, so to keep | |
| 576 // it selected, we have to add it to the selection. | |
| 577 TreePath[] originalPaths = selection.getPaths(); | |
| 578 int length_ = originalPaths.length; | |
| 579 TreePath[] paths = new TreePath[length_ + 1]; | |
| 580 System.arraycopy(originalPaths, 0, paths, 0, length_); | |
| 581 // set the element temporarily so that we can call getTreePathFromItem | |
| 582 item.setData(element); | |
| 583 paths[length_] = getTreePathFromItem(item); | |
| 584 item.setData(null); | |
| 585 return new TreeSelection(paths, selection.getElementComparer()); | |
| 586 } | |
| 587 } | |
| 588 // The item was not selected, return the given selection | |
| 589 return selection; | |
| 590 } | |
| 591 | |
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592 public override bool isExpandable(Object element) { |
| 10 | 593 if (contentProviderIsLazy) { |
| 594 TreeItem treeItem = cast(TreeItem) internalExpand(element, false); | |
| 595 if (treeItem is null) { | |
| 596 return false; | |
| 597 } | |
| 598 virtualMaterializeItem(treeItem); | |
| 599 return treeItem.getItemCount() > 0; | |
| 600 } | |
| 601 return super.isExpandable(element); | |
| 602 } | |
| 603 | |
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604 protected override Object getParentElement(Object element) { |
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605 bool oldBusy = isBusy(); |
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606 setBusy(true); |
| 10 | 607 try { |
| 608 if (contentProviderIsLazy && !contentProviderIsTreeBased && !(cast(TreePath)element )) { | |
| 609 ILazyTreeContentProvider lazyTreeContentProvider = cast(ILazyTreeContentProvider) getContentProvider(); | |
| 610 return lazyTreeContentProvider.getParent(element); | |
| 611 } | |
| 612 if (contentProviderIsLazy && contentProviderIsTreeBased && !(cast(TreePath)element )) { | |
| 613 ILazyTreePathContentProvider lazyTreePathContentProvider = cast(ILazyTreePathContentProvider) getContentProvider(); | |
| 614 TreePath[] parents = lazyTreePathContentProvider | |
| 615 .getParents(element); | |
| 616 if (parents !is null && parents.length > 0) { | |
| 617 return parents[0]; | |
| 618 } | |
| 619 } | |
| 620 return super.getParentElement(element); | |
| 621 } finally { | |
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622 setBusy(oldBusy); |
| 10 | 623 } |
| 624 } | |
| 625 | |
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626 protected override void createChildren(Widget widget) { |
| 10 | 627 if (contentProviderIsLazy) { |
| 628 Object element = widget.getData(); | |
| 629 if (element is null && cast(TreeItem)widget ) { | |
| 630 // parent has not been materialized | |
| 631 virtualMaterializeItem(cast(TreeItem) widget); | |
| 632 // try getting the element now that updateElement was called | |
| 633 element = widget.getData(); | |
| 634 } | |
| 635 if (element is null) { | |
| 636 // give up because the parent is still not materialized | |
| 637 return; | |
| 638 } | |
| 639 Item[] children = getChildren(widget); | |
| 640 if (children.length is 1 && children[0].getData() is null) { | |
| 641 // found a dummy node | |
| 642 virtualLazyUpdateChildCount(widget, children.length); | |
| 643 children = getChildren(widget); | |
| 644 } | |
| 645 // touch all children to make sure they are materialized | |
| 646 for (int i = 0; i < children.length; i++) { | |
| 647 if (children[i].getData() is null) { | |
| 648 virtualLazyUpdateWidget(widget, i); | |
| 649 } | |
| 650 } | |
| 651 return; | |
| 652 } | |
| 653 super.createChildren(widget); | |
| 654 } | |
| 655 | |
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656 protected override void internalAdd(Widget widget, Object parentElement, |
| 10 | 657 Object[] childElements) { |
| 658 if (contentProviderIsLazy) { | |
| 659 if (auto ti = cast(TreeItem)widget ) { | |
| 660 int count = ti.getItemCount() + childElements.length; | |
| 661 ti.setItemCount(count); | |
| 662 ti.clearAll(false); | |
| 663 } else { | |
| 664 Tree t = cast(Tree) widget; | |
| 665 t.setItemCount(t.getItemCount() + childElements.length); | |
| 666 t.clearAll(false); | |
| 667 } | |
| 668 return; | |
| 669 } | |
| 670 super.internalAdd(widget, parentElement, childElements); | |
| 671 } | |
| 672 | |
| 673 private void virtualMaterializeItem(TreeItem treeItem) { | |
| 674 if (treeItem.getData() !is null) { | |
| 675 // already materialized | |
| 676 return; | |
| 677 } | |
| 678 if (!contentProviderIsLazy) { | |
| 679 return; | |
| 680 } | |
| 681 int index; | |
| 682 Widget parent = treeItem.getParentItem(); | |
| 683 if (parent is null) { | |
| 684 parent = treeItem.getParent(); | |
| 685 } | |
| 686 Object parentElement = parent.getData(); | |
| 687 if (parentElement !is null) { | |
| 688 if ( auto t = cast(Tree)parent ) { | |
| 689 index = t.indexOf(treeItem); | |
| 690 } else { | |
| 691 index = (cast(TreeItem) parent).indexOf(treeItem); | |
| 692 } | |
| 693 virtualLazyUpdateWidget(parent, index); | |
| 694 } | |
| 695 } | |
| 696 | |
| 697 /* | |
| 698 * (non-Javadoc) | |
| 699 * | |
| 700 * @see dwtx.jface.viewers.AbstractTreeViewer#internalRefreshStruct(dwt.widgets.Widget, | |
| 701 * java.lang.Object, bool) | |
| 702 */ | |
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703 protected override void internalRefreshStruct(Widget widget, Object element, |
| 10 | 704 bool updateLabels) { |
| 705 if (contentProviderIsLazy) { | |
| 706 // clear all starting with the given widget | |
| 707 if (auto t = cast(Tree)widget ) { | |
| 708 t.clearAll(true); | |
| 709 } else if (cast(TreeItem)widget ) { | |
| 710 (cast(TreeItem) widget).clearAll(true); | |
| 711 } | |
| 712 int index = 0; | |
| 713 Widget parent = null; | |
| 714 if (auto treeItem = cast(TreeItem)widget ) { | |
| 715 parent = treeItem.getParentItem(); | |
| 716 if (parent is null) { | |
| 717 parent = treeItem.getParent(); | |
| 718 } | |
| 719 if (cast(Tree)parent ) { | |
| 720 index = (cast(Tree) parent).indexOf(treeItem); | |
| 721 } else { | |
| 722 index = (cast(TreeItem) parent).indexOf(treeItem); | |
| 723 } | |
| 724 } | |
| 725 virtualRefreshExpandedItems(parent, widget, element, index); | |
| 726 return; | |
| 727 } | |
| 728 super.internalRefreshStruct(widget, element, updateLabels); | |
| 729 } | |
| 730 | |
| 731 /** | |
| 732 * Traverses the visible (expanded) part of the tree and updates child | |
| 733 * counts. | |
| 734 * | |
| 735 * @param parent the parent of the widget, or <code>null</code> if the widget is the tree | |
| 736 * @param widget | |
| 737 * @param element | |
| 738 * @param index the index of the widget in the children array of its parent, or 0 if the widget is the tree | |
| 739 */ | |
| 740 private void virtualRefreshExpandedItems(Widget parent, Widget widget, Object element, int index) { | |
| 741 if ( cast(Tree)widget ) { | |
| 742 if (element is null) { | |
| 743 (cast(Tree) widget).setItemCount(0); | |
| 744 return; | |
| 745 } | |
| 746 virtualLazyUpdateChildCount(widget, getChildren(widget).length); | |
| 747 } else if ((cast(TreeItem) widget).getExpanded()) { | |
| 748 // prevent SetData callback | |
| 749 (cast(TreeItem)widget).setText(" "); //$NON-NLS-1$ | |
| 750 virtualLazyUpdateWidget(parent, index); | |
| 751 } else { | |
| 752 return; | |
| 753 } | |
| 754 Item[] items = getChildren(widget); | |
| 755 for (int i = 0; i < items.length; i++) { | |
| 756 Item item = items[i]; | |
| 757 Object data = item.getData(); | |
| 758 virtualRefreshExpandedItems(widget, item, data, i); | |
| 759 } | |
| 760 } | |
| 761 | |
| 762 /* | |
| 763 * To unmap elements correctly, we need to register a dispose listener with | |
| 764 * the item if the tree is virtual. | |
| 765 */ | |
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766 protected override void mapElement(Object element, Widget item) { |
| 10 | 767 super.mapElement(element, item); |
| 768 // make sure to unmap elements if the tree is virtual | |
| 769 if ((getTree().getStyle() & DWT.VIRTUAL) !is 0) { | |
| 770 // only add a dispose listener if item hasn't already on assigned | |
| 771 // because it is reused | |
| 772 if (item.getData(VIRTUAL_DISPOSE_KEY) is null) { | |
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773 item.setData(VIRTUAL_DISPOSE_KEY, Boolean.TRUE); |
| 39 | 774 item.addDisposeListener(new class(item) DisposeListener { |
| 10 | 775 Widget item_; |
| 39 | 776 this(Widget a){ |
| 777 item_=a; | |
| 10 | 778 } |
| 779 public void widgetDisposed(DisposeEvent e) { | |
| 780 if (!treeIsDisposed) { | |
| 781 Object data = item_.getData(); | |
| 782 if (usingElementMap() && data !is null) { | |
| 783 unmapElement(data, item_); | |
| 784 } | |
| 785 } | |
| 786 } | |
| 787 }); | |
| 788 } | |
| 789 } | |
| 790 } | |
| 791 | |
| 792 /* | |
| 793 * (non-Javadoc) | |
| 794 * | |
| 795 * @see dwtx.jface.viewers.ColumnViewer#getRowPartFromItem(dwt.widgets.Widget) | |
| 796 */ | |
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797 protected override ViewerRow getViewerRowFromItem(Widget item) { |
| 10 | 798 if( cachedRow is null ) { |
| 799 cachedRow = new TreeViewerRow(cast(TreeItem) item); | |
| 800 } else { | |
| 801 cachedRow.setItem(cast(TreeItem) item); | |
| 802 } | |
| 803 | |
| 804 return cachedRow; | |
| 805 } | |
| 806 | |
| 807 /** | |
| 808 * Create a new ViewerRow at rowIndex | |
| 809 * | |
| 810 * @param parent | |
| 811 * @param style | |
| 812 * @param rowIndex | |
| 813 * @return ViewerRow | |
| 814 */ | |
| 815 private ViewerRow createNewRowPart(ViewerRow parent, int style, int rowIndex) { | |
| 816 if (parent is null) { | |
| 817 if (rowIndex >= 0) { | |
| 818 return getViewerRowFromItem(new TreeItem(tree, style, rowIndex)); | |
| 819 } | |
| 820 return getViewerRowFromItem(new TreeItem(tree, style)); | |
| 821 } | |
| 822 | |
| 823 if (rowIndex >= 0) { | |
| 824 return getViewerRowFromItem(new TreeItem(cast(TreeItem) parent.getItem(), | |
| 825 DWT.NONE, rowIndex)); | |
| 826 } | |
| 827 | |
| 828 return getViewerRowFromItem(new TreeItem(cast(TreeItem) parent.getItem(), | |
| 829 DWT.NONE)); | |
| 830 } | |
| 831 | |
| 832 /* | |
| 833 * (non-Javadoc) | |
| 834 * | |
| 835 * @see dwtx.jface.viewers.AbstractTreeViewer#internalInitializeTree(dwt.widgets.Control) | |
| 836 */ | |
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837 protected override void internalInitializeTree(Control widget) { |
| 10 | 838 if (contentProviderIsLazy) { |
| 839 if (cast(Tree)widget && widget.getData() !is null) { | |
| 840 virtualLazyUpdateChildCount(widget, 0); | |
| 841 return; | |
| 842 } | |
| 843 } | |
| 844 super.internalInitializeTree(tree); | |
| 845 } | |
| 846 | |
| 847 /* | |
| 848 * (non-Javadoc) | |
| 849 * | |
| 850 * @see dwtx.jface.viewers.AbstractTreeViewer#updatePlus(dwt.widgets.Item, | |
| 851 * java.lang.Object) | |
| 852 */ | |
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853 protected override void updatePlus(Item item, Object element) { |
| 10 | 854 if (contentProviderIsLazy) { |
| 855 Object data = item.getData(); | |
| 856 int itemCount = 0; | |
| 857 if (data !is null) { | |
| 858 // item is already materialized | |
| 859 itemCount = (cast(TreeItem) item).getItemCount(); | |
| 860 } | |
| 861 virtualLazyUpdateHasChildren(item, itemCount); | |
| 862 } else { | |
| 863 super.updatePlus(item, element); | |
| 864 } | |
| 865 } | |
| 866 | |
| 867 /** | |
| 868 * Removes the element at the specified index of the parent. The selection is updated if required. | |
| 869 * | |
| 870 * @param parentOrTreePath the parent element, the input element, or a tree path to the parent element | |
| 871 * @param index child index | |
| 872 * @since 3.3 | |
| 873 */ | |
| 874 public void remove(Object parentOrTreePath_, int index_) { | |
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875 if (checkBusy()) |
| 10 | 876 return; |
| 39 | 877 preservingSelection(new class((cast(TreeSelection) getSelection()).getPaths(),parentOrTreePath_,index_) Runnable { |
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878 List oldSelection; |
| 10 | 879 Object parentOrTreePath; |
| 880 int index; | |
| 39 | 881 this(TreePath[] a,Object b,int c){ |
| 882 parentOrTreePath=b; | |
| 883 index=c; | |
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884 oldSelection = new LinkedList(Arrays.asList(a)); |
| 10 | 885 } |
| 886 public void run() { | |
| 887 TreePath removedPath = null; | |
| 888 if (internalIsInputOrEmptyPath(parentOrTreePath)) { | |
| 889 Tree tree = cast(Tree) getControl(); | |
| 890 if (index < tree.getItemCount()) { | |
| 891 TreeItem item = tree.getItem(index); | |
| 892 if (item.getData() !is null) { | |
| 893 removedPath = getTreePathFromItem(item); | |
| 894 disassociate(item); | |
| 895 } | |
| 896 item.dispose(); | |
| 897 } | |
| 898 } else { | |
| 899 Widget[] parentItems = internalFindItems(parentOrTreePath); | |
| 900 for (int i = 0; i < parentItems.length; i++) { | |
| 901 TreeItem parentItem = cast(TreeItem) parentItems[i]; | |
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902 if (parentItem.isDisposed()) |
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903 continue; |
| 10 | 904 if (index < parentItem.getItemCount()) { |
| 905 TreeItem item = parentItem.getItem(index); | |
| 906 if (item.getData() !is null) { | |
| 907 removedPath = getTreePathFromItem(item); | |
| 908 disassociate(item); | |
| 909 } | |
| 910 item.dispose(); | |
| 911 } | |
| 912 } | |
| 913 } | |
| 914 if (removedPath !is null) { | |
| 915 bool removed = false; | |
|
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916 for (Iterator it = oldSelection.iterator(); it |
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917 .hasNext();) { |
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918 TreePath path = cast(TreePath) it.next(); |
| 10 | 919 if (path.startsWith(removedPath, getComparer())) { |
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920 it.remove(); |
| 10 | 921 removed = true; |
| 922 } | |
| 923 } | |
| 924 if (removed) { | |
| 925 setSelection(new TreeSelection( | |
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926 arraycast!(TreePath)( oldSelection |
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927 .toArray(new TreePath[oldSelection |
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928 .size()])), getComparer()), |
| 10 | 929 false); |
| 930 } | |
| 931 } | |
| 932 } | |
| 933 }); | |
| 934 } | |
| 935 | |
| 936 /* (non-Javadoc) | |
| 937 * @see dwtx.jface.viewers.AbstractTreeViewer#handleTreeExpand(dwt.events.TreeEvent) | |
| 938 */ | |
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939 protected override void handleTreeExpand(TreeEvent event) { |
| 10 | 940 if (contentProviderIsLazy) { |
| 941 if (event.item.getData() !is null) { | |
| 942 Item[] children = getChildren(event.item); | |
| 943 if (children.length is 1 && children[0].getData() is null) { | |
| 944 // we have a dummy child node, ask for an updated child | |
| 945 // count | |
| 946 virtualLazyUpdateChildCount(event.item, children.length); | |
| 947 } | |
| 948 fireTreeExpanded(new TreeExpansionEvent(this, event.item | |
| 949 .getData())); | |
| 950 } | |
| 951 return; | |
| 952 } | |
| 953 super.handleTreeExpand(event); | |
| 954 } | |
| 955 | |
| 956 /* (non-Javadoc) | |
| 957 * @see dwtx.jface.viewers.AbstractTreeViewer#setContentProvider(dwtx.jface.viewers.IContentProvider) | |
| 958 */ | |
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959 public override void setContentProvider(IContentProvider provider) { |
| 10 | 960 contentProviderIsLazy = (cast(ILazyTreeContentProvider)provider ) |
| 961 || (cast(ILazyTreePathContentProvider)provider ); | |
| 962 contentProviderIsTreeBased = null !is cast(ILazyTreePathContentProvider)provider ; | |
| 963 super.setContentProvider(provider); | |
| 964 } | |
| 965 | |
| 966 /** | |
| 967 * For a TreeViewer with a tree with the VIRTUAL style bit set, inform the | |
| 968 * viewer about whether the given element or tree path has children. Avoid | |
| 969 * calling this method if the number of children has already been set. | |
| 970 * | |
| 971 * @param elementOrTreePath | |
| 972 * the element, or tree path | |
| 973 * @param hasChildren | |
| 974 * | |
| 975 * @since 3.3 | |
| 976 */ | |
| 977 public void setHasChildren(Object elementOrTreePath_, bool hasChildren_) { | |
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978 if (checkBusy()) |
| 10 | 979 return; |
| 39 | 980 preservingSelection(new class(elementOrTreePath_,hasChildren_) Runnable { |
| 10 | 981 Object elementOrTreePath; |
| 982 bool hasChildren; | |
| 39 | 983 this(Object a,bool b){ |
| 984 elementOrTreePath=a; | |
| 985 hasChildren=b; | |
| 10 | 986 } |
| 987 public void run() { | |
| 988 if (internalIsInputOrEmptyPath(elementOrTreePath)) { | |
| 989 if (hasChildren) { | |
| 990 virtualLazyUpdateChildCount(getTree(), | |
| 991 getChildren(getTree()).length); | |
| 992 } else { | |
| 993 setChildCount(elementOrTreePath, 0); | |
| 994 } | |
| 995 return; | |
| 996 } | |
| 997 Widget[] items = internalFindItems(elementOrTreePath); | |
| 998 for (int i = 0; i < items.length; i++) { | |
| 999 TreeItem item = cast(TreeItem) items[i]; | |
| 1000 if (!hasChildren) { | |
| 1001 item.setItemCount(0); | |
| 1002 } else { | |
| 1003 if (!item.getExpanded()) { | |
| 1004 item.setItemCount(1); | |
| 1005 TreeItem child = item.getItem(0); | |
| 1006 if (child.getData() !is null) { | |
| 1007 disassociate(child); | |
| 1008 } | |
| 1009 item.clear(0, true); | |
| 1010 } else { | |
| 1011 virtualLazyUpdateChildCount(item, item.getItemCount()); | |
| 1012 } | |
| 1013 } | |
| 1014 } | |
| 1015 } | |
| 1016 }); | |
| 1017 } | |
| 1018 | |
| 1019 /** | |
| 1020 * Update the widget at index. | |
| 1021 * @param widget | |
| 1022 * @param index | |
| 1023 */ | |
| 1024 private void virtualLazyUpdateWidget(Widget widget, int index) { | |
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1025 bool oldBusy = isBusy(); |
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1026 setBusy(false); |
| 10 | 1027 try { |
| 1028 if (contentProviderIsTreeBased) { | |
| 1029 TreePath treePath; | |
| 1030 if ( auto i = cast(Item)widget ) { | |
| 1031 if (widget.getData() is null) { | |
| 1032 // we need to materialize the parent first | |
| 1033 // see bug 167668 | |
| 1034 // however, that would be too risky | |
| 1035 // see bug 182782 and bug 182598 | |
| 1036 // so we just ignore this call altogether | |
| 1037 // and don't do this: virtualMaterializeItem((TreeItem) widget); | |
| 1038 return; | |
| 1039 } | |
| 1040 treePath = getTreePathFromItem(i); | |
| 1041 } else { | |
| 1042 treePath = TreePath.EMPTY; | |
| 1043 } | |
| 1044 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1045 .updateElement(treePath, index); | |
| 1046 } else { | |
| 1047 (cast(ILazyTreeContentProvider) getContentProvider()).updateElement( | |
| 1048 widget.getData(), index); | |
| 1049 } | |
| 1050 } finally { | |
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1051 setBusy(oldBusy); |
| 10 | 1052 } |
| 1053 } | |
| 1054 | |
| 1055 /** | |
| 1056 * Update the child count | |
| 1057 * @param widget | |
| 1058 * @param currentChildCount | |
| 1059 */ | |
| 1060 private void virtualLazyUpdateChildCount(Widget widget, int currentChildCount) { | |
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1061 bool oldBusy = isBusy(); |
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1062 setBusy(false); |
| 10 | 1063 try { |
| 1064 if (contentProviderIsTreeBased) { | |
| 1065 TreePath treePath; | |
| 1066 if (cast(Item)widget ) { | |
| 1067 treePath = getTreePathFromItem(cast(Item) widget); | |
| 1068 } else { | |
| 1069 treePath = TreePath.EMPTY; | |
| 1070 } | |
| 1071 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1072 .updateChildCount(treePath, currentChildCount); | |
| 1073 } else { | |
| 1074 (cast(ILazyTreeContentProvider) getContentProvider()).updateChildCount(widget.getData(), currentChildCount); | |
| 1075 } | |
| 1076 } finally { | |
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1077 setBusy(oldBusy); |
| 10 | 1078 } |
| 1079 } | |
| 1080 | |
| 1081 /** | |
| 1082 * Update the item with the current child count. | |
| 1083 * @param item | |
| 1084 * @param currentChildCount | |
| 1085 */ | |
| 1086 private void virtualLazyUpdateHasChildren(Item item, int currentChildCount) { | |
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1087 bool oldBusy = isBusy(); |
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1088 setBusy(false); |
| 10 | 1089 try { |
| 1090 if (contentProviderIsTreeBased) { | |
| 1091 TreePath treePath; | |
| 1092 treePath = getTreePathFromItem(item); | |
| 1093 if (currentChildCount is 0) { | |
| 1094 // item is not expanded (but may have a plus currently) | |
| 1095 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1096 .updateHasChildren(treePath); | |
| 1097 } else { | |
| 1098 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1099 .updateChildCount(treePath, currentChildCount); | |
| 1100 } | |
| 1101 } else { | |
| 1102 (cast(ILazyTreeContentProvider) getContentProvider()).updateChildCount(item.getData(), currentChildCount); | |
| 1103 } | |
| 1104 } finally { | |
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1105 setBusy(oldBusy); |
| 10 | 1106 } |
| 1107 } | |
| 1108 | |
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1109 protected override void disassociate(Item item) { |
| 10 | 1110 if (contentProviderIsLazy) { |
| 1111 // avoid causing a callback: | |
| 1112 item.setText(" "); //$NON-NLS-1$ | |
| 1113 } | |
| 1114 super.disassociate(item); | |
| 1115 } | |
| 1116 | |
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1117 protected override int doGetColumnCount() { |
| 10 | 1118 return tree.getColumnCount(); |
| 1119 } | |
| 1120 | |
| 1121 /** | |
| 1122 * Sets a new selection for this viewer and optionally makes it visible. | |
| 1123 * <p> | |
| 1124 * <b>Currently the <code>reveal</code> parameter is not honored because | |
| 1125 * {@link Tree} does not provide an API to only select an item without | |
| 1126 * scrolling it into view</b> | |
| 1127 * </p> | |
| 1128 * | |
| 1129 * @param selection | |
| 1130 * the new selection | |
| 1131 * @param reveal | |
| 1132 * <code>true</code> if the selection is to be made visible, | |
| 1133 * and <code>false</code> otherwise | |
| 1134 */ | |
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1135 public override void setSelection(ISelection selection, bool reveal) { |
| 10 | 1136 super.setSelection(selection, reveal); |
| 1137 } | |
| 1138 | |
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1139 public override void editElement(Object element, int column) { |
| 10 | 1140 if( cast(TreePath)element ) { |
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1141 try { |
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1142 getControl().setRedraw(false); |
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1143 setSelection(new TreeSelection(cast(TreePath) element)); |
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1144 TreeItem[] items = tree.getSelection(); |
| 10 | 1145 |
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1146 if( items.length is 1 ) { |
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1147 ViewerRow row = getViewerRowFromItem(items[0]); |
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1148 |
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1149 if (row !is null) { |
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1150 ViewerCell cell = row.getCell(column); |
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1151 if (cell !is null) { |
| 10 | 1152 triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent(cell)); |
| 1153 } | |
| 1154 } | |
| 1155 } | |
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1156 } finally { |
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1157 getControl().setRedraw(true); |
| 10 | 1158 } |
| 1159 } else { | |
| 1160 super.editElement(element, column); | |
| 1161 } | |
| 1162 } | |
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1163 |
| 10 | 1164 } |