Bug 334101

Description Michael Klein 2011-01-12 08:55:40 EST

Environment: Firefox 3.6.13/IE 8.0.7600 on Win7

The bug occurs using RAP 1.4 M4.

Steps to reproduce:
* create a tree viewer
* add drag support to the tree viewer
* fill it with some items
* select more than one item
* try to drag the selected items
-> The selection is reduced to one single item and the drag contains only one item

Expected:
The multiselection is untouched and the drag contains all selected items


Here is a snippet to reproduce:

public class Snippet implements IEntryPoint {

	public int createUI() {
		Display display = new Display();
		Shell shell = new Shell(display, SWT.TITLE);
		createContent(shell);
		shell.layout();
		shell.open();

		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}
		return 0;
	}

	private void createContent(Shell shell) {
		shell.setLayout(new GridLayout(1, false));

		Tree tree = new Tree(shell, SWT.NONE | SWT.MULTI);
		tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
		TreeViewer viewer = new TreeViewer(tree);
		viewer.setLabelProvider(new LabelProvider());

		viewer.setContentProvider(new ITreeContentProvider() {
			public Object[] getElements(Object inputElement) {
				return new Object[] {"Root"};
			}
			public Object[] getChildren(Object parentElement) {
				if (hasChildren(parentElement)) {
					String[] input = new String[10];
					for (int i = 0; i < input.length; i++) {
						input[i] = "Item " + i;
					}
					return input;
				}
				return new Object[0];
			}
			public boolean hasChildren(Object element) {
				return element.toString().startsWith("Root");
			}
			public void dispose() {
			}
			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
			}
			public Object getParent(Object element) {
				return null;
			}
		});
		
		viewer.addDragSupport(DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_LINK, new Transfer[] {TextTransfer.getInstance()}, new DragSourceAdapter());

		viewer.setInput(new Object[0]);
		viewer.expandAll();
	}

}