Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/CheckboxTreeViewer.d @ 90:7ffeace6c47f
Update 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 06 Jul 2008 23:30:07 +0200 |
| parents | 46a6e0e6ccd4 |
| children | 04b47443bb01 |
| rev | line source |
|---|---|
| 10 | 1 /******************************************************************************* |
| 90 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 10 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwtx.jface.viewers.CheckboxTreeViewer; | |
| 14 | |
| 15 import dwtx.jface.viewers.TreeViewer; | |
| 16 import dwtx.jface.viewers.ICheckable; | |
| 17 import dwtx.jface.viewers.ICheckStateListener; | |
| 18 import dwtx.jface.viewers.CustomHashtable; | |
| 19 import dwtx.jface.viewers.CheckStateChangedEvent; | |
| 20 | |
| 21 import tango.util.collection.ArraySeq; | |
| 22 import tango.util.collection.model.Seq; | |
| 23 | |
| 24 import dwt.DWT; | |
| 25 import dwt.events.SelectionEvent; | |
| 26 import dwt.widgets.Composite; | |
| 27 import dwt.widgets.Control; | |
| 28 import dwt.widgets.Item; | |
| 29 import dwt.widgets.Tree; | |
| 30 import dwt.widgets.TreeItem; | |
| 31 import dwt.widgets.Widget; | |
| 32 import dwtx.core.runtime.Assert; | |
| 33 import dwtx.core.runtime.ListenerList; | |
| 34 import dwtx.jface.util.SafeRunnable; | |
| 35 | |
| 36 import dwt.dwthelper.utils; | |
| 37 import dwt.dwthelper.Runnable; | |
| 38 | |
| 39 /** | |
| 40 * A concrete tree-structured viewer based on an DWT <code>Tree</code> | |
| 41 * control with checkboxes on each node. | |
| 42 * <p> | |
| 43 * This class is not intended to be subclassed outside the viewer framework. | |
| 44 * It is designed to be instantiated with a pre-existing DWT tree control and configured | |
| 45 * with a domain-specific content provider, label provider, element filter (optional), | |
| 46 * and element sorter (optional). | |
| 47 * </p> | |
| 90 | 48 * @noextend This class is not intended to be subclassed by clients. |
| 10 | 49 */ |
| 50 public class CheckboxTreeViewer : TreeViewer, ICheckable { | |
|
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51 alias TreeViewer.preservingSelection preservingSelection; |
| 10 | 52 |
| 53 /** | |
| 54 * List of check state listeners (element type: <code>ICheckStateListener</code>). | |
| 55 */ | |
| 56 private ListenerList checkStateListeners; | |
| 57 | |
| 58 /** | |
| 59 * Last item clicked on, or <code>null</code> if none. | |
| 60 */ | |
| 61 private TreeItem lastClickedItem = null; | |
| 62 | |
| 63 /** | |
| 64 * Creates a tree viewer on a newly-created tree control under the given parent. | |
| 65 * The tree control is created using the DWT style bits: <code>CHECK</code> and <code>BORDER</code>. | |
| 66 * The viewer has no input, no content provider, a default label provider, | |
| 67 * no sorter, and no filters. | |
| 68 * | |
| 69 * @param parent the parent control | |
| 70 */ | |
| 71 public this(Composite parent) { | |
| 72 this(parent, DWT.BORDER); | |
| 73 } | |
| 74 | |
| 75 /** | |
| 76 * Creates a tree viewer on a newly-created tree control under the given parent. | |
| 77 * The tree control is created using the given DWT style bits, plus the <code>CHECK</code> style bit. | |
| 78 * The viewer has no input, no content provider, a default label provider, | |
| 79 * no sorter, and no filters. | |
| 80 * | |
| 81 * @param parent the parent control | |
| 82 * @param style the DWT style bits | |
| 83 */ | |
| 84 public this(Composite parent, int style) { | |
| 85 this(new Tree(parent, DWT.CHECK | style)); | |
| 86 } | |
| 87 | |
| 88 /** | |
| 89 * Creates a tree viewer on the given tree control. | |
| 90 * The <code>DWT.CHECK</code> style bit must be set on the given tree control. | |
| 91 * The viewer has no input, no content provider, a default label provider, | |
| 92 * no sorter, and no filters. | |
| 93 * | |
| 94 * @param tree the tree control | |
| 95 */ | |
| 96 public this(Tree tree) { | |
| 97 checkStateListeners = new ListenerList(); | |
| 98 super(tree); | |
| 99 } | |
| 100 | |
| 101 /* (non-Javadoc) | |
| 102 * Method declared on ICheckable. | |
| 103 */ | |
| 104 public void addCheckStateListener(ICheckStateListener listener) { | |
| 105 checkStateListeners.add(cast(Object)listener); | |
| 106 } | |
| 107 | |
| 108 /** | |
| 109 * Applies the checked and grayed states of the given widget and its | |
| 110 * descendents. | |
| 111 * | |
| 112 * @param checked a set of elements (element type: <code>Object</code>) | |
| 113 * @param grayed a set of elements (element type: <code>Object</code>) | |
| 114 * @param widget the widget | |
| 115 */ | |
| 116 private void applyState(CustomHashtable checked, CustomHashtable grayed, | |
| 117 Widget widget) { | |
| 118 Item[] items = getChildren(widget); | |
| 119 for (int i = 0; i < items.length; i++) { | |
| 120 Item item = items[i]; | |
| 121 if ( auto ti = cast(TreeItem) item ) { | |
| 122 Object data = item.getData(); | |
| 123 if (data !is null) { | |
| 124 ti.setChecked(checked.containsKey(data)); | |
| 125 ti.setGrayed(grayed.containsKey(data)); | |
| 126 } | |
| 127 } | |
| 128 applyState(checked, grayed, item); | |
| 129 } | |
| 130 } | |
| 131 | |
| 132 /** | |
| 133 * Notifies any check state listeners that the check state of an element has changed. | |
| 134 * Only listeners registered at the time this method is called are notified. | |
| 135 * | |
| 136 * @param event a check state changed event | |
| 137 * | |
| 138 * @see ICheckStateListener#checkStateChanged | |
| 139 */ | |
| 140 protected void fireCheckStateChanged(CheckStateChangedEvent event) { | |
| 141 Object[] array = checkStateListeners.getListeners(); | |
| 142 for (int i = 0; i < array.length; i++) { | |
| 39 | 143 SafeRunnable.run(new class(cast(ICheckStateListener) array[i]) SafeRunnable { |
| 10 | 144 ICheckStateListener l; |
| 39 | 145 this(ICheckStateListener a){ |
| 146 l = a; | |
| 10 | 147 } |
| 148 public void run() { | |
| 149 l.checkStateChanged(event); | |
| 150 } | |
| 151 }); | |
| 152 } | |
| 153 | |
| 154 } | |
| 155 | |
| 156 /** | |
| 157 * Gathers the checked and grayed states of the given widget and its | |
| 158 * descendents. | |
| 159 * | |
| 160 * @param checked a writable set of elements (element type: <code>Object</code>) | |
| 161 * @param grayed a writable set of elements (element type: <code>Object</code>) | |
| 162 * @param widget the widget | |
| 163 */ | |
| 164 private void gatherState(CustomHashtable checked, CustomHashtable grayed, | |
| 165 Widget widget) { | |
| 166 Item[] items = getChildren(widget); | |
| 167 for (int i = 0; i < items.length; i++) { | |
| 168 Item item = items[i]; | |
| 169 if ( auto ti = cast(TreeItem) item ) { | |
| 170 Object data = item.getData(); | |
| 171 if (data !is null) { | |
| 172 if (ti.getChecked()) { | |
| 173 checked.put(data, data); | |
| 174 } | |
| 175 if (ti.getGrayed()) { | |
| 176 grayed.put(data, data); | |
| 177 } | |
| 178 } | |
| 179 } | |
| 180 gatherState(checked, grayed, item); | |
| 181 } | |
| 182 } | |
| 183 | |
| 184 /* (non-Javadoc) | |
| 185 * Method declared on ICheckable. | |
| 186 */ | |
| 187 public bool getChecked(Object element) { | |
| 188 Widget widget = findItem(element); | |
| 189 if ( auto ti = cast(TreeItem) widget ) { | |
| 190 return ti.getChecked(); | |
| 191 } | |
| 192 return false; | |
| 193 } | |
| 194 | |
| 195 /** | |
| 196 * Returns a list of checked elements in this viewer's tree, | |
| 197 * including currently hidden ones that are marked as | |
| 198 * checked but are under a collapsed ancestor. | |
| 199 * <p> | |
| 200 * This method is typically used when preserving the interesting | |
| 201 * state of a viewer; <code>setCheckedElements</code> is used during the restore. | |
| 202 * </p> | |
| 203 * | |
| 204 * @return the array of checked elements | |
| 205 * | |
| 206 * @see #setCheckedElements | |
| 207 */ | |
| 208 public Object[] getCheckedElements() { | |
| 209 ArraySeq!(Object) v = new ArraySeq!(Object); | |
| 210 Control tree = getControl(); | |
| 211 internalCollectChecked(v, tree); | |
| 212 return v.toArray(); | |
| 213 } | |
| 214 | |
| 215 /** | |
| 216 * Returns the grayed state of the given element. | |
| 217 * | |
| 218 * @param element the element | |
| 219 * @return <code>true</code> if the element is grayed, | |
| 220 * and <code>false</code> if not grayed | |
| 221 */ | |
| 222 public bool getGrayed(Object element) { | |
| 223 Widget widget = findItem(element); | |
| 224 if ( auto ti = cast(TreeItem) widget ) { | |
| 225 return ti.getGrayed(); | |
| 226 } | |
| 227 return false; | |
| 228 } | |
| 229 | |
| 230 /** | |
| 231 * Returns a list of grayed elements in this viewer's tree, | |
| 232 * including currently hidden ones that are marked as | |
| 233 * grayed but are under a collapsed ancestor. | |
| 234 * <p> | |
| 235 * This method is typically used when preserving the interesting | |
| 236 * state of a viewer; <code>setGrayedElements</code> is used during the restore. | |
| 237 * </p> | |
| 238 * | |
| 239 * @return the array of grayed elements | |
| 240 * | |
| 241 * @see #setGrayedElements | |
| 242 */ | |
| 243 public Object[] getGrayedElements() { | |
| 244 ArraySeq!(Object) result = new ArraySeq!(Object); | |
| 245 internalCollectGrayed(result, getControl()); | |
| 246 return result.toArray(); | |
| 247 } | |
| 248 | |
| 249 /* (non-Javadoc) | |
| 250 * Method declared on StructuredViewer. | |
| 251 */ | |
|
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changeset
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252 protected override void handleDoubleSelect(SelectionEvent event) { |
| 10 | 253 |
| 254 if (lastClickedItem !is null) { | |
| 255 TreeItem item = lastClickedItem; | |
| 256 Object data = item.getData(); | |
| 257 if (data !is null) { | |
| 258 bool state = item.getChecked(); | |
| 259 setChecked(data, !state); | |
| 260 fireCheckStateChanged(new CheckStateChangedEvent(this, data, | |
| 261 !state)); | |
| 262 } | |
| 263 lastClickedItem = null; | |
| 264 } else { | |
| 265 super.handleDoubleSelect(event); | |
| 266 } | |
| 267 } | |
| 268 | |
| 269 /* (non-Javadoc) | |
| 270 * Method declared on StructuredViewer. | |
| 271 */ | |
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parents:
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changeset
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272 protected override void handleSelect(SelectionEvent event) { |
| 10 | 273 |
| 274 lastClickedItem = null; | |
| 275 if (event.detail is DWT.CHECK) { | |
| 276 TreeItem item = cast(TreeItem) event.item; | |
| 277 lastClickedItem = item; | |
| 278 super.handleSelect(event); | |
| 279 | |
| 280 Object data = item.getData(); | |
| 281 if (data !is null) { | |
| 282 fireCheckStateChanged(new CheckStateChangedEvent(this, data, | |
| 283 item.getChecked())); | |
| 284 } | |
| 285 } else { | |
| 286 super.handleSelect(event); | |
| 287 } | |
| 288 } | |
| 289 | |
| 290 /** | |
| 291 * Gathers the checked states of the given widget and its | |
| 292 * descendents, following a pre-order traversal of the tree. | |
| 293 * | |
| 294 * @param result a writable list of elements (element type: <code>Object</code>) | |
| 295 * @param widget the widget | |
| 296 */ | |
| 297 private void internalCollectChecked(Seq!(Object) result, Widget widget) { | |
| 298 Item[] items = getChildren(widget); | |
| 299 for (int i = 0; i < items.length; i++) { | |
| 300 Item item = items[i]; | |
| 301 if ( null !is cast(TreeItem)item && (cast(TreeItem) item).getChecked()) { | |
| 302 Object data = item.getData(); | |
| 303 if (data !is null) { | |
| 304 result.append(data); | |
| 305 } | |
| 306 } | |
| 307 internalCollectChecked(result, item); | |
| 308 } | |
| 309 } | |
| 310 | |
| 311 /** | |
| 312 * Gathers the grayed states of the given widget and its | |
| 313 * descendents, following a pre-order traversal of the tree. | |
| 314 * | |
| 315 * @param result a writable list of elements (element type: <code>Object</code>) | |
| 316 * @param widget the widget | |
| 317 */ | |
| 318 private void internalCollectGrayed(Seq!(Object) result, Widget widget) { | |
| 319 Item[] items = getChildren(widget); | |
| 320 for (int i = 0; i < items.length; i++) { | |
| 321 Item item = items[i]; | |
| 322 if (null !is cast(TreeItem)item && (cast(TreeItem) item).getGrayed()) { | |
| 323 Object data = item.getData(); | |
| 324 if (data !is null) { | |
| 325 result.append(data); | |
| 326 } | |
| 327 } | |
| 328 internalCollectGrayed(result, item); | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 /** | |
| 333 * Sets the checked state of all items to correspond to the given set of checked elements. | |
| 334 * | |
| 335 * @param checkedElements the set (element type: <code>Object</code>) of elements which are checked | |
| 336 * @param widget the widget | |
| 337 */ | |
| 338 private void internalSetChecked(CustomHashtable checkedElements, | |
| 339 Widget widget) { | |
| 340 Item[] items = getChildren(widget); | |
| 341 for (int i = 0; i < items.length; i++) { | |
| 342 TreeItem item = cast(TreeItem) items[i]; | |
| 343 Object data = item.getData(); | |
| 344 if (data !is null) { | |
| 345 bool checked = checkedElements.containsKey(data); | |
| 346 if (checked !is item.getChecked()) { | |
| 347 item.setChecked(checked); | |
| 348 } | |
| 349 } | |
| 350 internalSetChecked(checkedElements, item); | |
| 351 } | |
| 352 } | |
| 353 | |
| 354 /** | |
| 355 * Sets the grayed state of all items to correspond to the given set of grayed elements. | |
| 356 * | |
| 357 * @param grayedElements the set (element type: <code>Object</code>) of elements which are grayed | |
| 358 * @param widget the widget | |
| 359 */ | |
| 360 private void internalSetGrayed(CustomHashtable grayedElements, Widget widget) { | |
| 361 Item[] items = getChildren(widget); | |
| 362 for (int i = 0; i < items.length; i++) { | |
| 363 TreeItem item = cast(TreeItem) items[i]; | |
| 364 Object data = item.getData(); | |
| 365 if (data !is null) { | |
| 366 bool grayed = grayedElements.containsKey(data); | |
| 367 if (grayed !is item.getGrayed()) { | |
| 368 item.setGrayed(grayed); | |
| 369 } | |
| 370 } | |
| 371 internalSetGrayed(grayedElements, item); | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 /* (non-Javadoc) | |
| 376 * Method declared on Viewer. | |
| 377 */ | |
|
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parents:
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diff
changeset
|
378 protected override void preservingSelection(Runnable updateCode) { |
| 10 | 379 |
| 380 int n = getItemCount(getControl()); | |
| 381 CustomHashtable checkedNodes = newHashtable(n * 2 + 1); | |
| 382 CustomHashtable grayedNodes = newHashtable(n * 2 + 1); | |
| 383 | |
| 384 gatherState(checkedNodes, grayedNodes, getControl()); | |
| 385 | |
| 386 super.preservingSelection(updateCode); | |
| 387 | |
| 388 applyState(checkedNodes, grayedNodes, getControl()); | |
| 389 } | |
| 390 | |
| 391 /* (non-Javadoc) | |
| 392 * Method declared on ICheckable. | |
| 393 */ | |
| 394 public void removeCheckStateListener(ICheckStateListener listener) { | |
| 395 checkStateListeners.remove(cast(Object)listener); | |
| 396 } | |
| 397 | |
| 398 /* (non-Javadoc) | |
| 399 * Method declared on ICheckable. | |
| 400 */ | |
| 401 public bool setChecked(Object element, bool state) { | |
| 402 Assert.isNotNull(element); | |
| 403 Widget widget = internalExpand(element, false); | |
| 404 if ( auto ti = cast(TreeItem) widget ) { | |
| 405 ti.setChecked(state); | |
| 406 return true; | |
| 407 } | |
| 408 return false; | |
| 409 } | |
| 410 | |
| 411 /** | |
| 412 * Sets the checked state for the children of the given item. | |
| 413 * | |
| 414 * @param item the item | |
| 415 * @param state <code>true</code> if the item should be checked, | |
| 416 * and <code>false</code> if it should be unchecked | |
| 417 */ | |
| 418 private void setCheckedChildren(Item item, bool state) { | |
| 419 createChildren(item); | |
| 420 Item[] items = getChildren(item); | |
| 421 if (items !is null) { | |
| 422 for (int i = 0; i < items.length; i++) { | |
| 423 Item it = items[i]; | |
| 424 if (it.getData() !is null && (null !is cast(TreeItem)it )) { | |
| 425 TreeItem treeItem = cast(TreeItem) it; | |
| 426 treeItem.setChecked(state); | |
| 427 setCheckedChildren(treeItem, state); | |
| 428 } | |
| 429 } | |
| 430 } | |
| 431 } | |
| 432 | |
| 433 /** | |
| 434 * Sets which elements are checked in this viewer's tree. | |
| 435 * The given list contains the elements that are to be checked; | |
| 436 * all other elements are to be unchecked. | |
| 437 * Does not fire events to check state listeners. | |
| 438 * <p> | |
| 439 * This method is typically used when restoring the interesting | |
| 440 * state of a viewer captured by an earlier call to <code>getCheckedElements</code>. | |
| 441 * </p> | |
| 442 * | |
| 443 * @param elements the array of checked elements | |
| 444 * @see #getCheckedElements | |
| 445 */ | |
| 446 public void setCheckedElements(Object[] elements) { | |
| 447 assertElementsNotNull(elements); | |
| 448 CustomHashtable checkedElements = newHashtable(elements.length * 2 + 1); | |
| 449 for (int i = 0; i < elements.length; ++i) { | |
| 450 Object element = elements[i]; | |
| 451 // Ensure item exists for element | |
| 452 internalExpand(element, false); | |
| 453 checkedElements.put(element, element); | |
| 454 } | |
| 455 Control tree = getControl(); | |
| 456 tree.setRedraw(false); | |
| 457 internalSetChecked(checkedElements, tree); | |
| 458 tree.setRedraw(true); | |
| 459 } | |
| 460 | |
| 461 /** | |
| 462 * Sets the grayed state for the given element in this viewer. | |
| 463 * | |
| 464 * @param element the element | |
| 465 * @param state <code>true</code> if the item should be grayed, | |
| 466 * and <code>false</code> if it should be ungrayed | |
| 467 * @return <code>true</code> if the gray state could be set, | |
| 468 * and <code>false</code> otherwise | |
| 469 */ | |
| 470 public bool setGrayed(Object element, bool state) { | |
| 471 Assert.isNotNull(element); | |
| 472 Widget widget = internalExpand(element, false); | |
| 473 if ( auto ti = cast(TreeItem) widget ) { | |
| 474 ti.setGrayed(state); | |
| 475 return true; | |
| 476 } | |
| 477 return false; | |
| 478 } | |
| 479 | |
| 480 /** | |
| 481 * Check and gray the selection rather than calling both | |
| 482 * setGrayed and setChecked as an optimization. | |
| 483 * Does not fire events to check state listeners. | |
| 484 * @param element the item being checked | |
| 485 * @param state a bool indicating selection or deselection | |
| 486 * @return bool indicating success or failure. | |
| 487 */ | |
| 488 public bool setGrayChecked(Object element, bool state) { | |
| 489 Assert.isNotNull(element); | |
| 490 Widget widget = internalExpand(element, false); | |
| 491 if (auto item = cast(TreeItem)widget ) { | |
| 492 item.setChecked(state); | |
| 493 item.setGrayed(state); | |
| 494 return true; | |
| 495 } | |
| 496 return false; | |
| 497 } | |
| 498 | |
| 499 /** | |
| 500 * Sets which elements are grayed in this viewer's tree. | |
| 501 * The given list contains the elements that are to be grayed; | |
| 502 * all other elements are to be ungrayed. | |
| 503 * <p> | |
| 504 * This method is typically used when restoring the interesting | |
| 505 * state of a viewer captured by an earlier call to <code>getGrayedElements</code>. | |
| 506 * </p> | |
| 507 * | |
| 508 * @param elements the array of grayed elements | |
| 509 * | |
| 510 * @see #getGrayedElements | |
| 511 */ | |
| 512 public void setGrayedElements(Object[] elements) { | |
| 513 assertElementsNotNull(elements); | |
| 514 CustomHashtable grayedElements = newHashtable(elements.length * 2 + 1); | |
| 515 for (int i = 0; i < elements.length; ++i) { | |
| 516 Object element = elements[i]; | |
| 517 // Ensure item exists for element | |
| 518 internalExpand(element, false); | |
| 519 grayedElements.put(element, element); | |
| 520 } | |
| 521 Control tree = getControl(); | |
| 522 tree.setRedraw(false); | |
| 523 internalSetGrayed(grayedElements, tree); | |
| 524 tree.setRedraw(true); | |
| 525 } | |
| 526 | |
| 527 /** | |
| 528 * Sets the grayed state for the given element and its parents | |
| 529 * in this viewer. | |
| 530 * | |
| 531 * @param element the element | |
| 532 * @param state <code>true</code> if the item should be grayed, | |
| 533 * and <code>false</code> if it should be ungrayed | |
| 534 * @return <code>true</code> if the element is visible and the gray | |
| 535 * state could be set, and <code>false</code> otherwise | |
| 536 * @see #setGrayed | |
| 537 */ | |
| 538 public bool setParentsGrayed(Object element, bool state) { | |
| 539 Assert.isNotNull(element); | |
| 540 Widget widget = internalExpand(element, false); | |
| 541 if (auto item = cast(TreeItem) widget ) { | |
| 542 item.setGrayed(state); | |
| 543 item = item.getParentItem(); | |
| 544 while (item !is null) { | |
| 545 item.setGrayed(state); | |
| 546 item = item.getParentItem(); | |
| 547 } | |
| 548 return true; | |
| 549 } | |
| 550 return false; | |
| 551 } | |
| 552 | |
| 553 /** | |
| 554 * Sets the checked state for the given element and its visible | |
| 555 * children in this viewer. | |
| 556 * Assumes that the element has been expanded before. To enforce | |
| 557 * that the item is expanded, call <code>expandToLevel</code> | |
| 558 * for the element. | |
| 559 * Does not fire events to check state listeners. | |
| 560 * | |
| 561 * @param element the element | |
| 562 * @param state <code>true</code> if the item should be checked, | |
| 563 * and <code>false</code> if it should be unchecked | |
| 564 * @return <code>true</code> if the checked state could be set, | |
| 565 * and <code>false</code> otherwise | |
| 566 */ | |
| 567 public bool setSubtreeChecked(Object element, bool state) { | |
| 568 Widget widget = internalExpand(element, false); | |
| 569 if (auto item = cast(TreeItem) widget ) { | |
| 570 item.setChecked(state); | |
| 571 setCheckedChildren(item, state); | |
| 572 return true; | |
| 573 } | |
| 574 return false; | |
| 575 } | |
| 576 | |
| 577 /** | |
| 578 * Sets to the given value the checked state for all elements in this viewer. | |
| 579 * Does not fire events to check state listeners. | |
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580 * Assumes that the element has been expanded before. To enforce |
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581 * that the item is expanded, call <code>expandToLevel</code> |
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582 * for the element. |
| 10 | 583 * |
| 584 * @param state <code>true</code> if the element should be checked, | |
| 585 * and <code>false</code> if it should be unchecked | |
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586 * @deprecated as this method only checks or unchecks visible items |
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587 * is is recommended that {@link #setSubtreeChecked(Object, bool)} |
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parents:
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588 * is used instead. |
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parents:
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589 * @see #setSubtreeChecked(Object, bool) |
| 10 | 590 * |
| 591 * @since 3.2 | |
| 592 */ | |
| 593 public void setAllChecked(bool state) { | |
| 594 setAllChecked(state, getTree().getItems()); | |
| 595 | |
| 596 } | |
| 597 | |
| 598 /** | |
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599 * Set the checked state of the visible items and their children to state. |
| 10 | 600 * @param state |
| 601 * @param items | |
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602 * @deprecated |
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parents:
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changeset
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603 * @see #setAllChecked(bool) |
| 10 | 604 */ |
| 605 private void setAllChecked(bool state, TreeItem[] items) { | |
| 606 for (int i = 0; i < items.length; i++) { | |
| 607 items[i].setChecked(state); | |
| 608 TreeItem[] children = items[i].getItems(); | |
| 609 setAllChecked(state, children); | |
| 610 } | |
| 611 } | |
| 612 } |