Description Veronika Irvine 2001-10-11 14:24:07 EDT

In a multi select tree, select several items and then dispose of the last of the selected items.  Selection moves to the item after the 
disposed item and only one item is selected..  See the following example - click on the button "delete last selected item" and observe 
that selection goes to the item after the last selected item.

Conversely, if you delete the first selected item, the rest of the selected items remain selected. 

The preferred behaviour is that the undisposed items should remain selected in all cases.

public static void main(String args[]){
	Display display = new Display();
	Shell shell = new Shell (display);
	final Tree tree = new Tree(shell,SWT.MULTI);
	tree.setBounds(10,10,200,200);
	for (int i = 0; i < 20; i++) {
		TreeItem item = new TreeItem(tree, SWT.NONE);
		item.setText("Item "+i);
	}
	
	TreeItem[] treeItems = tree.getItems();
	tree.setSelection(new TreeItem [] {treeItems[3], treeItems[1], treeItems[0]});
	
	Button b = new Button(shell, SWT.PUSH);
	b.setBounds(10, 230, 200, 40);
	b.setText("delete last selected item");
	b.addListener(SWT.Selection, new Listener() {
		public void handleEvent(Event e) {
			TreeItem[] items = tree.getSelection();
			if (items.length > 0) {
				items[items.length - 1].dispose();
			}
		}
	});

    b = new Button(shell, SWT.PUSH);
	b.setBounds(10, 280, 200, 40);
	b.setText("delete first selected item");
	b.addListener(SWT.Selection, new Listener() {
		public void handleEvent(Event e) {
			TreeItem[] items = tree.getSelection();
			if (items.length > 0) {
				items[0].dispose();
			}
		}
	});
	
	shell.open();
	while (!shell.isDisposed ()) {
		if (!display.readAndDispatch ()) display.sleep ();
	}
	display.dispose ();
}

NOTES: