Bug 270457 [Viewers] [regression] CheckBoxTreeViewer clears check state after collapseAll
Hi there :) In my RCP I've a CheckBoxTreeViewer that looses check states for invisible items. Turns out if a disable the collapseAll() call things go back to normal. So, in a tree like this: [x] root [x] sub a collapseAll expandAll will create this: [x] root [] sub Could still be my fault, feel free to have me try some workarounds or other tests that help you find the cause...
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
newItem(ti, SWT.NULL, -1);
				}
				return;
			}
		}
		if (childElements.length > 0) {
			
			Object[] filtered = filter(parentElementOrTreePath, childElements);
			ViewerComparator comparator = getComparator();
			if (comparator != null) {
				if (comparator instanceof TreePathViewerSorter) {
					TreePathViewerSorter tpvs = (TreePathViewerSorter) comparator;
					if (path == null) {
						path = internalGetSorterParentPath(widget, comparator);
					}
					tpvs.sort(this, path, filtered);
				} else {
					comparator.sort(this, filtered);
				}
			}
			createAddedElements(widget, filtered);
		}
	}
	/**
	 * Filter the children elements.
	 *
	 * @param parentElementOrTreePath
	 *            the parent element or path
	 * @param elements
	 *            the child elements