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
int indexInItems = 0;
		
		
		int newItems = 0;
		
		elementloop: for (int i = 0; i < elements.length; i++) {
			Object element = elements[i];
			
			indexInItems = insertionPosition(items, comparator,
					indexInItems, element, parentPath);
			if (indexInItems == items.length) {
				createTreeItem(widget, element, -1);
				newItems++;
			} else {
				
				
				
				
				
				int insertionIndexInItems = indexInItems;
				while( insertionIndexInItems < items.length
						&& internalCompare(comparator, parentPath, element,
								items[insertionIndexInItems].getData()) == 0) {
					
					
					
					
					if (items[insertionIndexInItems].getData().equals(element)) {