Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/TreeViewer.d @ 43:ea8ff534f622
Fix override and super aliases
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Fri, 11 Apr 2008 01:24:25 +0200 |
| parents | da5ad8eedf5d |
| children | a6683645b0d7 |
| rev | line source |
|---|---|
| 10 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2004, 2007 IBM Corporation and others. | |
| 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, | |
| 11 * refactoring (bug 153993), bug 167323, 191468 | |
| 12 * Port to the D programming language: | |
| 13 * Frank Benoit <benoit@tionex.de> | |
| 14 *******************************************************************************/ | |
| 15 | |
| 16 module dwtx.jface.viewers.TreeViewer; | |
| 17 | |
| 18 import dwtx.jface.viewers.AbstractTreeViewer; | |
| 19 import dwtx.jface.viewers.TreeViewerRow; | |
| 20 import dwtx.jface.viewers.IBaseLabelProvider; | |
| 21 import dwtx.jface.viewers.ColumnViewerEditor; | |
| 22 import dwtx.jface.viewers.IContentProvider; | |
| 23 import dwtx.jface.viewers.TreeSelection; | |
| 24 import dwtx.jface.viewers.ViewerRow; | |
| 25 import dwtx.jface.viewers.ISelection; | |
| 26 import dwtx.jface.viewers.TreeViewerEditor; | |
| 27 import dwtx.jface.viewers.ColumnViewerEditorActivationStrategy; | |
| 28 import dwtx.jface.viewers.ColumnViewerEditorActivationEvent; | |
| 29 import dwtx.jface.viewers.ILazyTreeContentProvider; | |
| 30 import dwtx.jface.viewers.ILazyTreePathContentProvider; | |
| 31 import dwtx.jface.viewers.TreePath; | |
| 32 import dwtx.jface.viewers.TreeExpansionEvent; | |
| 33 import dwtx.jface.viewers.ViewerCell; | |
| 34 | |
| 35 import tango.util.collection.LinkSeq; | |
| 36 import tango.util.collection.model.Seq; | |
| 37 import tango.util.collection.model.SeqView; | |
| 38 | |
| 39 import dwt.DWT; | |
| 40 import dwt.events.DisposeEvent; | |
| 41 import dwt.events.DisposeListener; | |
| 42 import dwt.events.TreeEvent; | |
| 43 import dwt.events.TreeListener; | |
| 44 import dwt.graphics.Point; | |
| 45 import dwt.widgets.Composite; | |
| 46 import dwt.widgets.Control; | |
| 47 import dwt.widgets.Event; | |
| 48 import dwt.widgets.Item; | |
| 49 import dwt.widgets.Listener; | |
| 50 import dwt.widgets.Tree; | |
| 51 import dwt.widgets.TreeItem; | |
| 52 import dwt.widgets.Widget; | |
| 53 import dwtx.jface.util.Policy; | |
| 54 | |
| 55 import dwt.dwthelper.utils; | |
| 56 import dwt.dwthelper.Runnable; | |
|
40
da5ad8eedf5d
debug prints, dwt.dwthelper restructure, ...
Frank Benoit <benoit@tionex.de>
parents:
39
diff
changeset
|
57 import tango.util.log.Trace; |
| 10 | 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 | |
| 74 * created using the {@link DWT#VIRTUAL} style bit, and the tree viewer will not | |
| 75 * support sorting or filtering. | |
| 76 * </p> | |
| 77 */ | |
| 78 public class TreeViewer : AbstractTreeViewer { | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
79 alias AbstractTreeViewer.addTreeListener addTreeListener; |
|
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
80 alias AbstractTreeViewer.getLabelProvider getLabelProvider; |
|
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
81 alias AbstractTreeViewer.getSelection getSelection; |
|
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
82 alias AbstractTreeViewer.preservingSelection preservingSelection; |
|
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
83 alias AbstractTreeViewer.remove remove; |
|
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
84 alias AbstractTreeViewer.setSelection setSelection; |
| 10 | 85 |
| 86 private static final String VIRTUAL_DISPOSE_KEY = Policy.JFACE | |
| 87 ~ ".DISPOSE_LISTENER"; //$NON-NLS-1$ | |
| 88 | |
| 89 /** | |
| 90 * This viewer's control. | |
| 91 */ | |
| 92 private Tree tree; | |
| 93 | |
| 94 /** | |
| 95 * Flag for whether the tree has been disposed of. | |
| 96 */ | |
| 97 private bool treeIsDisposed = false; | |
| 98 | |
| 99 private bool contentProviderIsLazy; | |
| 100 | |
| 101 private bool contentProviderIsTreeBased; | |
| 102 | |
| 103 /** | |
| 104 * The row object reused | |
| 105 */ | |
| 106 private TreeViewerRow cachedRow; | |
| 107 | |
| 108 /** | |
| 109 * true if we are inside a preservingSelection() call | |
| 110 */ | |
| 111 private bool preservingSelection_; | |
| 112 | |
| 113 /** | |
| 114 * Creates a tree viewer on a newly-created tree control under the given | |
| 115 * parent. The tree control is created using the DWT style bits | |
| 116 * <code>MULTI, H_SCROLL, V_SCROLL,</code> and <code>BORDER</code>. The | |
| 117 * viewer has no input, no content provider, a default label provider, no | |
| 118 * sorter, and no filters. | |
| 119 * | |
| 120 * @param parent | |
| 121 * the parent control | |
| 122 */ | |
| 123 public this(Composite parent) { | |
| 124 this(parent, DWT.MULTI | DWT.H_SCROLL | DWT.V_SCROLL | DWT.BORDER); | |
| 125 } | |
| 126 | |
| 127 /** | |
| 128 * Creates a tree viewer on a newly-created tree control under the given | |
| 129 * parent. The tree control is created using the given DWT style bits. The | |
| 130 * viewer has no input, no content provider, a default label provider, no | |
| 131 * sorter, and no filters. | |
| 132 * | |
| 133 * @param parent | |
| 134 * the parent control | |
| 135 * @param style | |
| 136 * the DWT style bits used to create the tree. | |
| 137 */ | |
| 138 public this(Composite parent, int style) { | |
| 139 this(new Tree(parent, style)); | |
| 140 } | |
| 141 | |
| 142 /** | |
| 143 * Creates a tree viewer on the given tree control. The viewer has no input, | |
| 144 * no content provider, a default label provider, no sorter, and no filters. | |
| 145 * | |
| 146 * @param tree | |
| 147 * the tree control | |
| 148 */ | |
| 149 public this(Tree tree) { | |
| 150 super(); | |
| 151 this.tree = tree; | |
| 152 hookControl(tree); | |
| 153 } | |
| 154 | |
| 155 /* | |
| 156 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 157 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
158 protected override void addTreeListener(Control c, TreeListener listener) { |
| 10 | 159 (cast(Tree) c).addTreeListener(listener); |
| 160 } | |
| 161 | |
| 162 /* | |
| 163 * (non-Javadoc) | |
| 164 * | |
| 165 * @see dwtx.jface.viewers.ColumnViewer#getColumnViewerOwner(int) | |
| 166 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
167 protected override Widget getColumnViewerOwner(int columnIndex) { |
| 10 | 168 if (columnIndex < 0 || ( columnIndex > 0 && columnIndex >= getTree().getColumnCount() ) ) { |
| 169 return null; | |
| 170 } | |
| 171 | |
| 172 if (getTree().getColumnCount() is 0)// Hang it off the table if it | |
| 173 return getTree(); | |
| 174 | |
| 175 return getTree().getColumn(columnIndex); | |
| 176 } | |
| 177 | |
| 178 /* | |
| 179 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 180 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
181 protected override Item[] getChildren(Widget o) { |
| 10 | 182 if (auto ti = cast(TreeItem)o ) { |
| 183 return ti.getItems(); | |
| 184 } | |
| 185 if (auto t = cast(Tree)o ) { | |
| 186 return t.getItems(); | |
| 187 } | |
| 188 return null; | |
| 189 } | |
| 190 | |
| 191 /* | |
| 192 * (non-Javadoc) Method declared in Viewer. | |
| 193 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
194 public override Control getControl() { |
| 10 | 195 return tree; |
| 196 } | |
| 197 | |
| 198 /* | |
| 199 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 200 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
201 protected override bool getExpanded(Item item) { |
| 10 | 202 return (cast(TreeItem) item).getExpanded(); |
| 203 } | |
| 204 | |
| 205 /* | |
| 206 * (non-Javadoc) | |
| 207 * | |
| 208 * @see dwtx.jface.viewers.ColumnViewer#getItemAt(dwt.graphics.Point) | |
| 209 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
210 protected override Item getItemAt(Point p) { |
| 10 | 211 TreeItem[] selection = tree.getSelection(); |
| 212 | |
| 213 if( selection.length is 1 ) { | |
| 214 int columnCount = tree.getColumnCount(); | |
| 215 | |
| 216 for( int i = 0; i < columnCount; i++ ) { | |
| 217 if( selection[0].getBounds(i).contains(p) ) { | |
| 218 return selection[0]; | |
| 219 } | |
| 220 } | |
| 221 } | |
| 222 | |
| 223 return getTree().getItem(p); | |
| 224 } | |
| 225 | |
| 226 /* | |
| 227 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 228 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
229 protected override int getItemCount(Control widget) { |
| 10 | 230 return (cast(Tree) widget).getItemCount(); |
| 231 } | |
| 232 | |
| 233 /* | |
| 234 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 235 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
236 protected override int getItemCount(Item item) { |
| 10 | 237 return (cast(TreeItem) item).getItemCount(); |
| 238 } | |
| 239 | |
| 240 /* | |
| 241 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 242 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
243 protected override Item[] getItems(Item item) { |
| 10 | 244 return (cast(TreeItem) item).getItems(); |
| 245 } | |
| 246 | |
| 247 /** | |
| 248 * The tree viewer implementation of this <code>Viewer</code> framework | |
| 249 * method ensures that the given label provider is an instance of either | |
| 250 * <code>ITableLabelProvider</code> or <code>ILabelProvider</code>. If | |
| 251 * it is an <code>ITableLabelProvider</code>, then it provides a separate | |
| 252 * label text and image for each column. If it is an | |
| 253 * <code>ILabelProvider</code>, then it provides only the label text and | |
| 254 * image for the first column, and any remaining columns are blank. | |
| 255 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
256 public override IBaseLabelProvider getLabelProvider() { |
| 10 | 257 return super.getLabelProvider(); |
| 258 } | |
| 259 | |
| 260 /* | |
| 261 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 262 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
263 protected override Item getParentItem(Item item) { |
| 10 | 264 return (cast(TreeItem) item).getParentItem(); |
| 265 } | |
| 266 | |
| 267 /* | |
| 268 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 269 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
270 protected override Item[] getSelection(Control widget) { |
| 10 | 271 return (cast(Tree) widget).getSelection(); |
| 272 } | |
| 273 | |
| 274 /** | |
| 275 * Returns this tree viewer's tree control. | |
| 276 * | |
| 277 * @return the tree control | |
| 278 */ | |
| 279 public Tree getTree() { | |
| 280 return tree; | |
| 281 } | |
| 282 | |
| 283 /* | |
| 284 * (non-Javadoc) | |
| 285 * | |
| 286 * @see dwtx.jface.viewers.AbstractTreeViewer#hookControl(dwt.widgets.Control) | |
| 287 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
288 protected override void hookControl(Control control) { |
| 10 | 289 super.hookControl(control); |
| 290 Tree treeControl = cast(Tree) control; | |
| 291 | |
| 292 if ((treeControl.getStyle() & DWT.VIRTUAL) !is 0) { | |
| 293 treeControl.addDisposeListener(new class DisposeListener { | |
| 294 public void widgetDisposed(DisposeEvent e) { | |
| 295 treeIsDisposed = true; | |
| 296 unmapAllElements(); | |
| 297 } | |
| 298 }); | |
| 299 treeControl.addListener(DWT.SetData, new class Listener { | |
| 300 | |
| 301 public void handleEvent(Event event) { | |
| 302 if (contentProviderIsLazy) { | |
| 303 TreeItem item = cast(TreeItem) event.item; | |
| 304 TreeItem parentItem = item.getParentItem(); | |
| 305 int index = event.index; | |
| 306 virtualLazyUpdateWidget( | |
| 307 parentItem is null ? cast(Widget) getTree() | |
| 308 : parentItem, index); | |
| 309 } | |
| 310 } | |
| 311 | |
| 312 }); | |
| 313 } | |
| 314 } | |
| 315 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
316 protected override ColumnViewerEditor createViewerEditor() { |
| 10 | 317 return new TreeViewerEditor(this,null,new ColumnViewerEditorActivationStrategy(this),ColumnViewerEditor.DEFAULT); |
| 318 } | |
| 319 | |
| 320 /* | |
| 321 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 322 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
323 protected override Item newItem(Widget parent, int flags, int ix) { |
| 10 | 324 TreeItem item; |
| 325 | |
| 326 if ( cast(TreeItem)parent ) { | |
| 327 item = cast(TreeItem) createNewRowPart(getViewerRowFromItem(parent), | |
| 328 flags, ix).getItem(); | |
| 329 } else { | |
| 330 item = cast(TreeItem) createNewRowPart(null, flags, ix).getItem(); | |
| 331 } | |
| 332 | |
| 333 return item; | |
| 334 } | |
| 335 | |
| 336 /* | |
| 337 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 338 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
339 protected override void removeAll(Control widget) { |
| 10 | 340 (cast(Tree) widget).removeAll(); |
| 341 } | |
| 342 | |
| 343 /* | |
| 344 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 345 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
346 protected override void setExpanded(Item node, bool expand) { |
| 10 | 347 (cast(TreeItem) node).setExpanded(expand); |
| 348 if (contentProviderIsLazy) { | |
| 349 // force repaints to happen | |
| 350 getControl().update(); | |
| 351 } | |
| 352 } | |
| 353 | |
| 354 /* | |
| 355 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 356 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
357 protected override void setSelection(SeqView!(Item) items) { |
| 10 | 358 |
| 359 Item[] current = getSelection(getTree()); | |
| 360 | |
| 361 // Don't bother resetting the same selection | |
| 362 if (isSameSelection(items, current)) { | |
| 363 return; | |
| 364 } | |
| 365 | |
| 366 getTree().setSelection( cast(TreeItem[]) items.toArray()); | |
| 367 } | |
| 368 | |
| 369 /* | |
| 370 * (non-Javadoc) Method declared in AbstractTreeViewer. | |
| 371 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
372 protected override void showItem(Item item) { |
| 10 | 373 getTree().showItem(cast(TreeItem) item); |
| 374 } | |
| 375 | |
| 376 /* | |
| 377 * (non-Javadoc) | |
| 378 * | |
| 379 * @see dwtx.jface.viewers.AbstractTreeViewer#getChild(dwt.widgets.Widget, | |
| 380 * int) | |
| 381 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
382 protected override Item getChild(Widget widget, int index) { |
| 10 | 383 if (auto ti = cast(TreeItem)widget ) { |
| 384 return ti.getItem(index); | |
| 385 } | |
| 386 if (auto t = cast(Tree)widget ) { | |
| 387 return t.getItem(index); | |
| 388 } | |
| 389 return null; | |
| 390 } | |
| 391 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
392 protected override void assertContentProviderType(IContentProvider provider) { |
| 10 | 393 if ( null !is cast(ILazyTreeContentProvider)provider |
| 394 || null !is cast(ILazyTreePathContentProvider)provider ) { | |
| 395 return; | |
| 396 } | |
| 397 super.assertContentProviderType(provider); | |
| 398 } | |
| 399 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
400 protected override Object[] getRawChildren(Object parent) { |
| 10 | 401 if (contentProviderIsLazy) { |
| 402 return new Object[0]; | |
| 403 } | |
| 404 return super.getRawChildren(parent); | |
| 405 } | |
| 406 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
407 override void preservingSelection(Runnable updateCode, bool reveal) { |
| 10 | 408 if (preservingSelection_){ |
| 409 // avoid preserving the selection if called reentrantly, | |
| 410 // see bug 172640 | |
| 411 updateCode.run(); | |
| 412 return; | |
| 413 } | |
| 414 preservingSelection_ = true; | |
| 415 try { | |
| 416 super.preservingSelection(updateCode, reveal); | |
| 417 } finally { | |
| 418 preservingSelection_ = false; | |
| 419 } | |
| 420 } | |
| 421 | |
| 422 /** | |
| 423 * For a TreeViewer with a tree with the VIRTUAL style bit set, set the | |
| 424 * number of children of the given element or tree path. To set the number | |
| 425 * of children of the invisible root of the tree, you can pass the input | |
| 426 * object or an empty tree path. | |
| 427 * | |
| 428 * @param elementOrTreePath | |
| 429 * the element, or tree path | |
| 430 * @param count | |
| 431 * | |
| 432 * @since 3.2 | |
| 433 */ | |
| 434 public void setChildCount(Object elementOrTreePath, int count) { | |
| 435 if (isBusy()) | |
| 436 return; | |
| 39 | 437 preservingSelection(new class(elementOrTreePath,count) Runnable { |
| 10 | 438 Object elementOrTreePath_; |
| 439 int count_; | |
| 39 | 440 this(Object a,int b){ |
| 441 elementOrTreePath_=a; | |
| 442 count_=b; | |
| 10 | 443 } |
| 444 public void run() { | |
| 445 if (internalIsInputOrEmptyPath(elementOrTreePath_)) { | |
| 446 getTree().setItemCount(count_); | |
| 447 return; | |
| 448 } | |
| 449 Widget[] items = internalFindItems(elementOrTreePath_); | |
| 450 for (int i = 0; i < items.length; i++) { | |
| 451 TreeItem treeItem = cast(TreeItem) items[i]; | |
| 452 treeItem.setItemCount(count_); | |
| 453 } | |
| 454 } | |
| 455 }); | |
| 456 } | |
| 457 | |
| 458 /** | |
| 459 * For a TreeViewer with a tree with the VIRTUAL style bit set, replace the | |
| 460 * given parent's child at index with the given element. If the given parent | |
| 461 * is this viewer's input or an empty tree path, this will replace the root | |
| 462 * element at the given index. | |
| 463 * <p> | |
| 464 * This method should be called by implementers of ILazyTreeContentProvider | |
| 465 * to populate this viewer. | |
| 466 * </p> | |
| 467 * | |
| 468 * @param parentElementOrTreePath | |
| 469 * the parent of the element that should be updated, or the tree | |
| 470 * path to that parent | |
| 471 * @param index | |
| 472 * the index in the parent's children | |
| 473 * @param element | |
| 474 * the new element | |
| 475 * | |
| 476 * @see #setChildCount(Object, int) | |
| 477 * @see ILazyTreeContentProvider | |
| 478 * @see ILazyTreePathContentProvider | |
| 479 * | |
| 480 * @since 3.2 | |
| 481 */ | |
| 482 public void replace(Object parentElementOrTreePath, int index, | |
| 483 Object element) { | |
| 484 if (isBusy()) | |
| 485 return; | |
| 486 Item[] selectedItems = getSelection(getControl()); | |
| 487 TreeSelection selection = cast(TreeSelection) getSelection(); | |
| 488 Widget[] itemsToDisassociate; | |
| 489 if (auto tp = cast(TreePath)parentElementOrTreePath ) { | |
| 490 TreePath elementPath = tp | |
| 491 .createChildPath(element); | |
| 492 itemsToDisassociate = internalFindItems(elementPath); | |
| 493 } else { | |
| 494 itemsToDisassociate = internalFindItems(element); | |
| 495 } | |
| 496 if (internalIsInputOrEmptyPath(parentElementOrTreePath)) { | |
| 497 if (index < tree.getItemCount()) { | |
| 498 TreeItem item = tree.getItem(index); | |
| 499 selection = adjustSelectionForReplace(selectedItems, selection, item, element, getRoot()); | |
| 500 // disassociate any different item that represents the | |
| 501 // same element under the same parent (the tree) | |
| 502 for (int i = 0; i < itemsToDisassociate.length; i++) { | |
| 503 if (auto itemToDisassociate = cast(TreeItem)itemsToDisassociate[i]) { | |
| 504 if (itemToDisassociate !is item | |
| 505 && itemToDisassociate.getParentItem() is null) { | |
| 506 int indexToDisassociate = getTree().indexOf( | |
| 507 itemToDisassociate); | |
| 508 disassociate(itemToDisassociate); | |
| 509 getTree().clear(indexToDisassociate, true); | |
| 510 } | |
| 511 } | |
| 512 } | |
| 513 Object oldData = item.getData(); | |
| 514 updateItem(item, element); | |
| 515 if (!/+TreeViewer.this.+/opEquals(oldData, element)) { | |
| 516 item.clearAll(true); | |
| 517 } | |
| 518 } | |
| 519 } else { | |
| 520 Widget[] parentItems = internalFindItems(parentElementOrTreePath); | |
| 521 for (int i = 0; i < parentItems.length; i++) { | |
| 522 TreeItem parentItem = cast(TreeItem) parentItems[i]; | |
| 523 if (index < parentItem.getItemCount()) { | |
| 524 TreeItem item = parentItem.getItem(index); | |
| 525 selection = adjustSelectionForReplace(selectedItems, selection, item, element, parentItem.getData()); | |
| 526 // disassociate any different item that represents the | |
| 527 // same element under the same parent (the tree) | |
| 528 for (int j = 0; j < itemsToDisassociate.length; j++) { | |
| 529 if ( auto itemToDisassociate = cast(TreeItem)itemsToDisassociate[j] ) { | |
| 530 if (itemToDisassociate !is item | |
| 531 && itemToDisassociate.getParentItem() is parentItem) { | |
| 532 int indexToDisaccociate = parentItem | |
| 533 .indexOf(itemToDisassociate); | |
| 534 disassociate(itemToDisassociate); | |
| 535 parentItem.clear(indexToDisaccociate, true); | |
| 536 } | |
| 537 } | |
| 538 } | |
| 539 Object oldData = item.getData(); | |
| 540 updateItem(item, element); | |
| 541 if (!/+TreeViewer.this.+/opEquals(oldData, element)) { | |
| 542 item.clearAll(true); | |
| 543 } | |
| 544 } | |
| 545 } | |
| 546 } | |
| 547 // Restore the selection if we are not already in a nested preservingSelection: | |
| 548 if (!preservingSelection_) { | |
| 549 setSelectionToWidget(selection, false); | |
| 550 // send out notification if old and new differ | |
| 551 ISelection newSelection = getSelection(); | |
| 552 if (!(cast(Object)newSelection).opEquals(cast(Object)selection)) { | |
| 553 handleInvalidSelection(selection, newSelection); | |
| 554 } | |
| 555 } | |
| 556 } | |
| 557 | |
| 558 /** | |
| 559 * Fix for bug 185673: If the currently replaced item was selected, add it | |
| 560 * to the selection that is being restored. Only do this if its getData() is | |
| 561 * currently null | |
| 562 * | |
| 563 * @param selectedItems | |
| 564 * @param selection | |
| 565 * @param item | |
| 566 * @param element | |
| 567 * @return | |
| 568 */ | |
| 569 private TreeSelection adjustSelectionForReplace(Item[] selectedItems, | |
| 570 TreeSelection selection, TreeItem item, Object element, Object parentElement) { | |
| 571 if (item.getData() !is null || selectedItems.length is selection.size() | |
| 572 || parentElement is null) { | |
| 573 // Don't do anything - we are not seeing an instance of bug 185673 | |
| 574 return selection; | |
| 575 } | |
| 576 for (int i = 0; i < selectedItems.length; i++) { | |
| 577 if (item is selectedItems[i]) { | |
| 578 // The current item was selected, but its data is null. | |
| 579 // The data will be replaced by the given element, so to keep | |
| 580 // it selected, we have to add it to the selection. | |
| 581 TreePath[] originalPaths = selection.getPaths(); | |
| 582 int length_ = originalPaths.length; | |
| 583 TreePath[] paths = new TreePath[length_ + 1]; | |
| 584 System.arraycopy(originalPaths, 0, paths, 0, length_); | |
| 585 // set the element temporarily so that we can call getTreePathFromItem | |
| 586 item.setData(element); | |
| 587 paths[length_] = getTreePathFromItem(item); | |
| 588 item.setData(null); | |
| 589 return new TreeSelection(paths, selection.getElementComparer()); | |
| 590 } | |
| 591 } | |
| 592 // The item was not selected, return the given selection | |
| 593 return selection; | |
| 594 } | |
| 595 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
596 public override bool isExpandable(Object element) { |
| 10 | 597 if (contentProviderIsLazy) { |
| 598 TreeItem treeItem = cast(TreeItem) internalExpand(element, false); | |
| 599 if (treeItem is null) { | |
| 600 return false; | |
| 601 } | |
| 602 virtualMaterializeItem(treeItem); | |
| 603 return treeItem.getItemCount() > 0; | |
| 604 } | |
| 605 return super.isExpandable(element); | |
| 606 } | |
| 607 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
608 protected override Object getParentElement(Object element) { |
| 10 | 609 bool oldBusy = busy; |
| 610 busy = true; | |
| 611 try { | |
| 612 if (contentProviderIsLazy && !contentProviderIsTreeBased && !(cast(TreePath)element )) { | |
| 613 ILazyTreeContentProvider lazyTreeContentProvider = cast(ILazyTreeContentProvider) getContentProvider(); | |
| 614 return lazyTreeContentProvider.getParent(element); | |
| 615 } | |
| 616 if (contentProviderIsLazy && contentProviderIsTreeBased && !(cast(TreePath)element )) { | |
| 617 ILazyTreePathContentProvider lazyTreePathContentProvider = cast(ILazyTreePathContentProvider) getContentProvider(); | |
| 618 TreePath[] parents = lazyTreePathContentProvider | |
| 619 .getParents(element); | |
| 620 if (parents !is null && parents.length > 0) { | |
| 621 return parents[0]; | |
| 622 } | |
| 623 } | |
| 624 return super.getParentElement(element); | |
| 625 } finally { | |
| 626 busy = oldBusy; | |
| 627 } | |
| 628 } | |
| 629 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
630 protected override void createChildren(Widget widget) { |
| 10 | 631 if (contentProviderIsLazy) { |
| 632 Object element = widget.getData(); | |
| 633 if (element is null && cast(TreeItem)widget ) { | |
| 634 // parent has not been materialized | |
| 635 virtualMaterializeItem(cast(TreeItem) widget); | |
| 636 // try getting the element now that updateElement was called | |
| 637 element = widget.getData(); | |
| 638 } | |
| 639 if (element is null) { | |
| 640 // give up because the parent is still not materialized | |
| 641 return; | |
| 642 } | |
| 643 Item[] children = getChildren(widget); | |
| 644 if (children.length is 1 && children[0].getData() is null) { | |
| 645 // found a dummy node | |
| 646 virtualLazyUpdateChildCount(widget, children.length); | |
| 647 children = getChildren(widget); | |
| 648 } | |
| 649 // touch all children to make sure they are materialized | |
| 650 for (int i = 0; i < children.length; i++) { | |
| 651 if (children[i].getData() is null) { | |
| 652 virtualLazyUpdateWidget(widget, i); | |
| 653 } | |
| 654 } | |
| 655 return; | |
| 656 } | |
| 657 super.createChildren(widget); | |
| 658 } | |
| 659 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
660 protected override void internalAdd(Widget widget, Object parentElement, |
| 10 | 661 Object[] childElements) { |
| 662 if (contentProviderIsLazy) { | |
| 663 if (auto ti = cast(TreeItem)widget ) { | |
| 664 int count = ti.getItemCount() + childElements.length; | |
| 665 ti.setItemCount(count); | |
| 666 ti.clearAll(false); | |
| 667 } else { | |
| 668 Tree t = cast(Tree) widget; | |
| 669 t.setItemCount(t.getItemCount() + childElements.length); | |
| 670 t.clearAll(false); | |
| 671 } | |
| 672 return; | |
| 673 } | |
| 674 super.internalAdd(widget, parentElement, childElements); | |
| 675 } | |
| 676 | |
| 677 private void virtualMaterializeItem(TreeItem treeItem) { | |
| 678 if (treeItem.getData() !is null) { | |
| 679 // already materialized | |
| 680 return; | |
| 681 } | |
| 682 if (!contentProviderIsLazy) { | |
| 683 return; | |
| 684 } | |
| 685 int index; | |
| 686 Widget parent = treeItem.getParentItem(); | |
| 687 if (parent is null) { | |
| 688 parent = treeItem.getParent(); | |
| 689 } | |
| 690 Object parentElement = parent.getData(); | |
| 691 if (parentElement !is null) { | |
| 692 if ( auto t = cast(Tree)parent ) { | |
| 693 index = t.indexOf(treeItem); | |
| 694 } else { | |
| 695 index = (cast(TreeItem) parent).indexOf(treeItem); | |
| 696 } | |
| 697 virtualLazyUpdateWidget(parent, index); | |
| 698 } | |
| 699 } | |
| 700 | |
| 701 /* | |
| 702 * (non-Javadoc) | |
| 703 * | |
| 704 * @see dwtx.jface.viewers.AbstractTreeViewer#internalRefreshStruct(dwt.widgets.Widget, | |
| 705 * java.lang.Object, bool) | |
| 706 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
707 protected override void internalRefreshStruct(Widget widget, Object element, |
| 10 | 708 bool updateLabels) { |
| 709 if (contentProviderIsLazy) { | |
| 710 // clear all starting with the given widget | |
| 711 if (auto t = cast(Tree)widget ) { | |
| 712 t.clearAll(true); | |
| 713 } else if (cast(TreeItem)widget ) { | |
| 714 (cast(TreeItem) widget).clearAll(true); | |
| 715 } | |
| 716 int index = 0; | |
| 717 Widget parent = null; | |
| 718 if (auto treeItem = cast(TreeItem)widget ) { | |
| 719 parent = treeItem.getParentItem(); | |
| 720 if (parent is null) { | |
| 721 parent = treeItem.getParent(); | |
| 722 } | |
| 723 if (cast(Tree)parent ) { | |
| 724 index = (cast(Tree) parent).indexOf(treeItem); | |
| 725 } else { | |
| 726 index = (cast(TreeItem) parent).indexOf(treeItem); | |
| 727 } | |
| 728 } | |
| 729 virtualRefreshExpandedItems(parent, widget, element, index); | |
| 730 return; | |
| 731 } | |
| 732 super.internalRefreshStruct(widget, element, updateLabels); | |
| 733 } | |
| 734 | |
| 735 /** | |
| 736 * Traverses the visible (expanded) part of the tree and updates child | |
| 737 * counts. | |
| 738 * | |
| 739 * @param parent the parent of the widget, or <code>null</code> if the widget is the tree | |
| 740 * @param widget | |
| 741 * @param element | |
| 742 * @param index the index of the widget in the children array of its parent, or 0 if the widget is the tree | |
| 743 */ | |
| 744 private void virtualRefreshExpandedItems(Widget parent, Widget widget, Object element, int index) { | |
| 745 if ( cast(Tree)widget ) { | |
| 746 if (element is null) { | |
| 747 (cast(Tree) widget).setItemCount(0); | |
| 748 return; | |
| 749 } | |
| 750 virtualLazyUpdateChildCount(widget, getChildren(widget).length); | |
| 751 } else if ((cast(TreeItem) widget).getExpanded()) { | |
| 752 // prevent SetData callback | |
| 753 (cast(TreeItem)widget).setText(" "); //$NON-NLS-1$ | |
| 754 virtualLazyUpdateWidget(parent, index); | |
| 755 } else { | |
| 756 return; | |
| 757 } | |
| 758 Item[] items = getChildren(widget); | |
| 759 for (int i = 0; i < items.length; i++) { | |
| 760 Item item = items[i]; | |
| 761 Object data = item.getData(); | |
| 762 virtualRefreshExpandedItems(widget, item, data, i); | |
| 763 } | |
| 764 } | |
| 765 | |
| 766 /* | |
| 767 * To unmap elements correctly, we need to register a dispose listener with | |
| 768 * the item if the tree is virtual. | |
| 769 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
770 protected override void mapElement(Object element, Widget item) { |
| 10 | 771 super.mapElement(element, item); |
| 772 // make sure to unmap elements if the tree is virtual | |
| 773 if ((getTree().getStyle() & DWT.VIRTUAL) !is 0) { | |
| 774 // only add a dispose listener if item hasn't already on assigned | |
| 775 // because it is reused | |
| 776 if (item.getData(VIRTUAL_DISPOSE_KEY) is null) { | |
| 777 item.setData(VIRTUAL_DISPOSE_KEY, new ValueWrapperBool(true)); | |
| 39 | 778 item.addDisposeListener(new class(item) DisposeListener { |
| 10 | 779 Widget item_; |
| 39 | 780 this(Widget a){ |
| 781 item_=a; | |
| 10 | 782 } |
| 783 public void widgetDisposed(DisposeEvent e) { | |
| 784 if (!treeIsDisposed) { | |
| 785 Object data = item_.getData(); | |
| 786 if (usingElementMap() && data !is null) { | |
| 787 unmapElement(data, item_); | |
| 788 } | |
| 789 } | |
| 790 } | |
| 791 }); | |
| 792 } | |
| 793 } | |
| 794 } | |
| 795 | |
| 796 /* | |
| 797 * (non-Javadoc) | |
| 798 * | |
| 799 * @see dwtx.jface.viewers.ColumnViewer#getRowPartFromItem(dwt.widgets.Widget) | |
| 800 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
801 protected override ViewerRow getViewerRowFromItem(Widget item) { |
| 10 | 802 if( cachedRow is null ) { |
| 803 cachedRow = new TreeViewerRow(cast(TreeItem) item); | |
| 804 } else { | |
| 805 cachedRow.setItem(cast(TreeItem) item); | |
| 806 } | |
| 807 | |
| 808 return cachedRow; | |
| 809 } | |
| 810 | |
| 811 /** | |
| 812 * Create a new ViewerRow at rowIndex | |
| 813 * | |
| 814 * @param parent | |
| 815 * @param style | |
| 816 * @param rowIndex | |
| 817 * @return ViewerRow | |
| 818 */ | |
| 819 private ViewerRow createNewRowPart(ViewerRow parent, int style, int rowIndex) { | |
| 820 if (parent is null) { | |
| 821 if (rowIndex >= 0) { | |
| 822 return getViewerRowFromItem(new TreeItem(tree, style, rowIndex)); | |
| 823 } | |
| 824 return getViewerRowFromItem(new TreeItem(tree, style)); | |
| 825 } | |
| 826 | |
| 827 if (rowIndex >= 0) { | |
| 828 return getViewerRowFromItem(new TreeItem(cast(TreeItem) parent.getItem(), | |
| 829 DWT.NONE, rowIndex)); | |
| 830 } | |
| 831 | |
| 832 return getViewerRowFromItem(new TreeItem(cast(TreeItem) parent.getItem(), | |
| 833 DWT.NONE)); | |
| 834 } | |
| 835 | |
| 836 /* | |
| 837 * (non-Javadoc) | |
| 838 * | |
| 839 * @see dwtx.jface.viewers.AbstractTreeViewer#internalInitializeTree(dwt.widgets.Control) | |
| 840 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
841 protected override void internalInitializeTree(Control widget) { |
| 10 | 842 if (contentProviderIsLazy) { |
| 843 if (cast(Tree)widget && widget.getData() !is null) { | |
| 844 virtualLazyUpdateChildCount(widget, 0); | |
| 845 return; | |
| 846 } | |
| 847 } | |
| 848 super.internalInitializeTree(tree); | |
| 849 } | |
| 850 | |
| 851 /* | |
| 852 * (non-Javadoc) | |
| 853 * | |
| 854 * @see dwtx.jface.viewers.AbstractTreeViewer#updatePlus(dwt.widgets.Item, | |
| 855 * java.lang.Object) | |
| 856 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
857 protected override void updatePlus(Item item, Object element) { |
| 10 | 858 if (contentProviderIsLazy) { |
| 859 Object data = item.getData(); | |
| 860 int itemCount = 0; | |
| 861 if (data !is null) { | |
| 862 // item is already materialized | |
| 863 itemCount = (cast(TreeItem) item).getItemCount(); | |
| 864 } | |
| 865 virtualLazyUpdateHasChildren(item, itemCount); | |
| 866 } else { | |
| 867 super.updatePlus(item, element); | |
| 868 } | |
| 869 } | |
| 870 | |
| 871 /** | |
| 872 * Removes the element at the specified index of the parent. The selection is updated if required. | |
| 873 * | |
| 874 * @param parentOrTreePath the parent element, the input element, or a tree path to the parent element | |
| 875 * @param index child index | |
| 876 * @since 3.3 | |
| 877 */ | |
| 878 public void remove(Object parentOrTreePath_, int index_) { | |
| 879 if (isBusy()) | |
| 880 return; | |
| 39 | 881 preservingSelection(new class((cast(TreeSelection) getSelection()).getPaths(),parentOrTreePath_,index_) Runnable { |
| 10 | 882 Seq!(TreePath) oldSelection; |
| 883 Object parentOrTreePath; | |
| 884 int index; | |
| 39 | 885 this(TreePath[] a,Object b,int c){ |
| 886 parentOrTreePath=b; | |
| 887 index=c; | |
| 10 | 888 oldSelection = new LinkSeq!(TreePath); |
| 39 | 889 foreach( p; a){ |
| 10 | 890 oldSelection.append( p ); |
| 891 } | |
| 892 } | |
| 893 public void run() { | |
| 894 TreePath removedPath = null; | |
| 895 if (internalIsInputOrEmptyPath(parentOrTreePath)) { | |
| 896 Tree tree = cast(Tree) getControl(); | |
| 897 if (index < tree.getItemCount()) { | |
| 898 TreeItem item = tree.getItem(index); | |
| 899 if (item.getData() !is null) { | |
| 900 removedPath = getTreePathFromItem(item); | |
| 901 disassociate(item); | |
| 902 } | |
| 903 item.dispose(); | |
| 904 } | |
| 905 } else { | |
| 906 Widget[] parentItems = internalFindItems(parentOrTreePath); | |
| 907 for (int i = 0; i < parentItems.length; i++) { | |
| 908 TreeItem parentItem = cast(TreeItem) parentItems[i]; | |
| 909 if (index < parentItem.getItemCount()) { | |
| 910 TreeItem item = parentItem.getItem(index); | |
| 911 if (item.getData() !is null) { | |
| 912 removedPath = getTreePathFromItem(item); | |
| 913 disassociate(item); | |
| 914 } | |
| 915 item.dispose(); | |
| 916 } | |
| 917 } | |
| 918 } | |
| 919 if (removedPath !is null) { | |
| 920 bool removed = false; | |
| 921 int delIdx = 0; | |
| 922 foreach ( path; oldSelection.dup ) { | |
| 923 if (path.startsWith(removedPath, getComparer())) { | |
| 924 oldSelection.removeAt(delIdx); | |
| 925 removed = true; | |
| 926 } | |
| 927 delIdx++; | |
| 928 } | |
| 929 if (removed) { | |
| 930 setSelection(new TreeSelection( | |
| 931 oldSelection.toArray(), getComparer()), | |
| 932 false); | |
| 933 } | |
| 934 | |
| 935 } | |
| 936 } | |
| 937 }); | |
| 938 } | |
| 939 | |
| 940 /* (non-Javadoc) | |
| 941 * @see dwtx.jface.viewers.AbstractTreeViewer#handleTreeExpand(dwt.events.TreeEvent) | |
| 942 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
943 protected override void handleTreeExpand(TreeEvent event) { |
| 10 | 944 if (contentProviderIsLazy) { |
| 945 if (event.item.getData() !is null) { | |
| 946 Item[] children = getChildren(event.item); | |
| 947 if (children.length is 1 && children[0].getData() is null) { | |
| 948 // we have a dummy child node, ask for an updated child | |
| 949 // count | |
| 950 virtualLazyUpdateChildCount(event.item, children.length); | |
| 951 } | |
| 952 fireTreeExpanded(new TreeExpansionEvent(this, event.item | |
| 953 .getData())); | |
| 954 } | |
| 955 return; | |
| 956 } | |
| 957 super.handleTreeExpand(event); | |
| 958 } | |
| 959 | |
| 960 /* (non-Javadoc) | |
| 961 * @see dwtx.jface.viewers.AbstractTreeViewer#setContentProvider(dwtx.jface.viewers.IContentProvider) | |
| 962 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
963 public override void setContentProvider(IContentProvider provider) { |
| 10 | 964 contentProviderIsLazy = (cast(ILazyTreeContentProvider)provider ) |
| 965 || (cast(ILazyTreePathContentProvider)provider ); | |
| 966 contentProviderIsTreeBased = null !is cast(ILazyTreePathContentProvider)provider ; | |
| 967 super.setContentProvider(provider); | |
| 968 } | |
| 969 | |
| 970 /** | |
| 971 * For a TreeViewer with a tree with the VIRTUAL style bit set, inform the | |
| 972 * viewer about whether the given element or tree path has children. Avoid | |
| 973 * calling this method if the number of children has already been set. | |
| 974 * | |
| 975 * @param elementOrTreePath | |
| 976 * the element, or tree path | |
| 977 * @param hasChildren | |
| 978 * | |
| 979 * @since 3.3 | |
| 980 */ | |
| 981 public void setHasChildren(Object elementOrTreePath_, bool hasChildren_) { | |
| 982 if (isBusy()) | |
| 983 return; | |
| 39 | 984 preservingSelection(new class(elementOrTreePath_,hasChildren_) Runnable { |
| 10 | 985 Object elementOrTreePath; |
| 986 bool hasChildren; | |
| 39 | 987 this(Object a,bool b){ |
| 988 elementOrTreePath=a; | |
| 989 hasChildren=b; | |
| 10 | 990 } |
| 991 public void run() { | |
| 992 if (internalIsInputOrEmptyPath(elementOrTreePath)) { | |
| 993 if (hasChildren) { | |
| 994 virtualLazyUpdateChildCount(getTree(), | |
| 995 getChildren(getTree()).length); | |
| 996 } else { | |
| 997 setChildCount(elementOrTreePath, 0); | |
| 998 } | |
| 999 return; | |
| 1000 } | |
| 1001 Widget[] items = internalFindItems(elementOrTreePath); | |
| 1002 for (int i = 0; i < items.length; i++) { | |
| 1003 TreeItem item = cast(TreeItem) items[i]; | |
| 1004 if (!hasChildren) { | |
| 1005 item.setItemCount(0); | |
| 1006 } else { | |
| 1007 if (!item.getExpanded()) { | |
| 1008 item.setItemCount(1); | |
| 1009 TreeItem child = item.getItem(0); | |
| 1010 if (child.getData() !is null) { | |
| 1011 disassociate(child); | |
| 1012 } | |
| 1013 item.clear(0, true); | |
| 1014 } else { | |
| 1015 virtualLazyUpdateChildCount(item, item.getItemCount()); | |
| 1016 } | |
| 1017 } | |
| 1018 } | |
| 1019 } | |
| 1020 }); | |
| 1021 } | |
| 1022 | |
| 1023 /** | |
| 1024 * Update the widget at index. | |
| 1025 * @param widget | |
| 1026 * @param index | |
| 1027 */ | |
| 1028 private void virtualLazyUpdateWidget(Widget widget, int index) { | |
| 1029 bool oldBusy = busy; | |
| 1030 busy = false; | |
| 1031 try { | |
| 1032 if (contentProviderIsTreeBased) { | |
| 1033 TreePath treePath; | |
| 1034 if ( auto i = cast(Item)widget ) { | |
| 1035 if (widget.getData() is null) { | |
| 1036 // we need to materialize the parent first | |
| 1037 // see bug 167668 | |
| 1038 // however, that would be too risky | |
| 1039 // see bug 182782 and bug 182598 | |
| 1040 // so we just ignore this call altogether | |
| 1041 // and don't do this: virtualMaterializeItem((TreeItem) widget); | |
| 1042 return; | |
| 1043 } | |
| 1044 treePath = getTreePathFromItem(i); | |
| 1045 } else { | |
| 1046 treePath = TreePath.EMPTY; | |
| 1047 } | |
| 1048 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1049 .updateElement(treePath, index); | |
| 1050 } else { | |
| 1051 (cast(ILazyTreeContentProvider) getContentProvider()).updateElement( | |
| 1052 widget.getData(), index); | |
| 1053 } | |
| 1054 } finally { | |
| 1055 busy = oldBusy; | |
| 1056 } | |
| 1057 } | |
| 1058 | |
| 1059 /** | |
| 1060 * Update the child count | |
| 1061 * @param widget | |
| 1062 * @param currentChildCount | |
| 1063 */ | |
| 1064 private void virtualLazyUpdateChildCount(Widget widget, int currentChildCount) { | |
| 1065 bool oldBusy = busy; | |
| 1066 busy = false; | |
| 1067 try { | |
| 1068 if (contentProviderIsTreeBased) { | |
| 1069 TreePath treePath; | |
| 1070 if (cast(Item)widget ) { | |
| 1071 treePath = getTreePathFromItem(cast(Item) widget); | |
| 1072 } else { | |
| 1073 treePath = TreePath.EMPTY; | |
| 1074 } | |
| 1075 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1076 .updateChildCount(treePath, currentChildCount); | |
| 1077 } else { | |
| 1078 (cast(ILazyTreeContentProvider) getContentProvider()).updateChildCount(widget.getData(), currentChildCount); | |
| 1079 } | |
| 1080 } finally { | |
| 1081 busy = oldBusy; | |
| 1082 } | |
| 1083 } | |
| 1084 | |
| 1085 /** | |
| 1086 * Update the item with the current child count. | |
| 1087 * @param item | |
| 1088 * @param currentChildCount | |
| 1089 */ | |
| 1090 private void virtualLazyUpdateHasChildren(Item item, int currentChildCount) { | |
| 1091 bool oldBusy = busy; | |
| 1092 busy = false; | |
| 1093 try { | |
| 1094 if (contentProviderIsTreeBased) { | |
| 1095 TreePath treePath; | |
| 1096 treePath = getTreePathFromItem(item); | |
| 1097 if (currentChildCount is 0) { | |
| 1098 // item is not expanded (but may have a plus currently) | |
| 1099 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1100 .updateHasChildren(treePath); | |
| 1101 } else { | |
| 1102 (cast(ILazyTreePathContentProvider) getContentProvider()) | |
| 1103 .updateChildCount(treePath, currentChildCount); | |
| 1104 } | |
| 1105 } else { | |
| 1106 (cast(ILazyTreeContentProvider) getContentProvider()).updateChildCount(item.getData(), currentChildCount); | |
| 1107 } | |
| 1108 } finally { | |
| 1109 busy = oldBusy; | |
| 1110 } | |
| 1111 } | |
| 1112 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
1113 protected override void disassociate(Item item) { |
| 10 | 1114 if (contentProviderIsLazy) { |
| 1115 // avoid causing a callback: | |
| 1116 item.setText(" "); //$NON-NLS-1$ | |
| 1117 } | |
| 1118 super.disassociate(item); | |
| 1119 } | |
| 1120 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
1121 protected override int doGetColumnCount() { |
| 10 | 1122 return tree.getColumnCount(); |
| 1123 } | |
| 1124 | |
| 1125 /** | |
| 1126 * Sets a new selection for this viewer and optionally makes it visible. | |
| 1127 * <p> | |
| 1128 * <b>Currently the <code>reveal</code> parameter is not honored because | |
| 1129 * {@link Tree} does not provide an API to only select an item without | |
| 1130 * scrolling it into view</b> | |
| 1131 * </p> | |
| 1132 * | |
| 1133 * @param selection | |
| 1134 * the new selection | |
| 1135 * @param reveal | |
| 1136 * <code>true</code> if the selection is to be made visible, | |
| 1137 * and <code>false</code> otherwise | |
| 1138 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
1139 public override void setSelection(ISelection selection, bool reveal) { |
| 10 | 1140 super.setSelection(selection, reveal); |
| 1141 } | |
| 1142 | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
40
diff
changeset
|
1143 public override void editElement(Object element, int column) { |
| 10 | 1144 if( cast(TreePath)element ) { |
| 1145 setSelection(new TreeSelection(cast(TreePath) element)); | |
| 1146 TreeItem[] items = tree.getSelection(); | |
| 1147 | |
| 1148 if( items.length is 1 ) { | |
| 1149 ViewerRow row = getViewerRowFromItem(items[0]); | |
| 1150 | |
| 1151 if (row !is null) { | |
| 1152 ViewerCell cell = row.getCell(column); | |
| 1153 if (cell !is null) { | |
| 1154 getControl().setRedraw(false); | |
| 1155 try { | |
| 1156 triggerEditorActivationEvent(new ColumnViewerEditorActivationEvent(cell)); | |
| 1157 } finally { | |
| 1158 getControl().setRedraw(true); | |
| 1159 } | |
| 1160 } | |
| 1161 } | |
| 1162 } | |
| 1163 } else { | |
| 1164 super.editElement(element, column); | |
| 1165 } | |
| 1166 } | |
| 1167 } |