Bug 267242 [JFace] Add API to configure table and tree columns in a keyboard-accessible way
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/ConfigureColumnsHandler.java
/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
	 */
	public Object execute(ExecutionEvent event) {
		ExtendedMarkersView view = getView(event);
		if (view == null)
			return this;
		ConfigureColumnsDialog dialog = new ConfigureColumnsDialog(view.getSite(), view.getViewer().getTree());
		dialog.open();
		return this;
	}
}