Bug 103747 [Viewers] calling refresh on treeviewer in treeExpanded function, but it mess
I tried calling refresh on treeviewer in treeExpanded function. The result is it mess up the tree, there is only one children without a label. Code to reproduce: public void createPartControl(Composite parent) { viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL); drillDownAdapter = new DrillDownAdapter(viewer); viewer.setContentProvider(new ViewContentProvider()); viewer.setLabelProvider(new ViewLabelProvider()); viewer.setSorter(new NameSorter()); viewer.setInput(getViewSite()); viewer.addTreeListener(new ITreeViewerListener() { public void treeCollapsed(TreeExpansionEvent event) { } public void treeExpanded(TreeExpansionEvent event) { viewer.refresh(event.getElement()); }}); }
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
protected Item getPreviousItem(Item item) {
		
		
		Item parent = getParentItem(item);
		if (parent == null) {
			return null;
		}
		Item[] siblings = getItems(parent);
		if (siblings.length == 0 || siblings[0] == item) {
			return parent;
		}
		Item previous = siblings[0];
		for (int i = 1; i < siblings.length; i++) {
			if (siblings[i] == item) {
				return rightMostVisibleDescendent(previous);
			}
			previous = siblings[i];
		}
		return null;
	}
	
	protected Object[] getRawChildren(Object parentElementOrTreePath) {
		boolean oldBusy = busy;
		busy = true;
		try {
			Object parent;
			TreePath path;
			if (parentElementOrTreePath instanceof TreePath) {
				path = (TreePath) parentElementOrTreePath;
				parent = path.getLastSegment();