Bug 36625 "Copy Trace" Action in "Failure Trace" View enabled for empty table.
The "Copy Trace" action should probably be hidden or unavailable when there is nothing in the "Failure Trace" view. Currently the user is given the option to copy a trace of nothing to the clipboard.
org.eclipse.jdt.junit/src/org/eclipse/jdt/internal/junit/ui/HierarchyRunView.java
* Vector of SuiteInfo items
	 */
	private Vector fSuiteInfos= new Vector();
	/**
	 * Maps test Ids to TreeItems. 
	 */
	private Map fTreeItemMap= new HashMap();
	
	private TestRunnerViewPart fTestRunnerPart;
	
	private final Image fOkIcon= TestRunnerViewPart.createImage("obj16/testok.gif"); 
	private final Image fErrorIcon= TestRunnerViewPart.createImage("obj16/testerr.gif"); 
	private final Image fFailureIcon= TestRunnerViewPart.createImage("obj16/testfail.gif"); 
	private final Image fHierarchyIcon= TestRunnerViewPart.createImage("obj16/testhier.gif"); 
	private final Image fSuiteIcon= TestRunnerViewPart.createImage("obj16/tsuite.gif"); 
	private final Image fSuiteErrorIcon= TestRunnerViewPart.createImage("obj16/tsuiteerror.gif"); 
	private final Image fSuiteFailIcon= TestRunnerViewPart.createImage("obj16/tsuitefail.gif"); 
	private final Image fTestIcon= TestRunnerViewPart.createImage("obj16/test.gif"); 
	private final Image fTestRunningIcon= TestRunnerViewPart.createImage("obj16/testrun.gif"); 
		
	public HierarchyRunView(CTabFolder tabFolder, TestRunnerViewPart runner) {
		fTestRunnerPart= runner;
		
		CTabItem hierarchyTab= new CTabItem(tabFolder, SWT.NONE);
		hierarchyTab.setText(getName());
		hierarchyTab.setImage(fHierarchyIcon);
		
		Composite testTreePanel= new Composite(tabFolder, SWT.NONE);
		GridLayout gridLayout= new GridLayout();
		gridLayout.marginHeight= 0;