Bug 61743 NPE in MessageDialog with null parent shell
I-build 2004-05-11 I have code that does the following: MessageDialog.openInformation(null, "Showing element", "Showning an integer of value: "+((Integer)match.getElement()).intValue()); This leads to a null pointer with the follwing stack trace: Thread [main] (Suspended (exception NullPointerException)) MessageDialog.<init>(Shell, String, Image, String, int, String[], int) line: 126 MessageDialog.openInformation(Shell, String, String) line: 305 TestUIParticipant.showMatch(Match, int, int, boolean) line: 57 JavaSearchResultPage.showMatch(Match, int, int, boolean) line: 153 AbstractTextSearchViewPage$9.run() line: 723 <snip> The API doc for MessageDialog say that I'm allowed to pass in null for the parent shell.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/ProgressMonitorDialog.java
cancel = createButton(parent, IDialogConstants.CANCEL_ID,
				IDialogConstants.CANCEL_LABEL, true);
		if (arrowCursor == null)
			arrowCursor = new Cursor(cancel.getDisplay(), SWT.CURSOR_ARROW);
		cancel.setCursor(arrowCursor);
		setOperationCancelButtonEnabled(enableCancelButton);
	}
	/*
	 * (non-Javadoc) Method declared on Dialog.
	 */
	protected Control createDialogArea(Composite parent) {
		setMessage(DEFAULT_TASKNAME);
		createMessageArea(parent);
		
		taskLabel = messageLabel;
		
		progressIndicator = new ProgressIndicator(parent);
		GridData gd = new GridData();
		gd.heightHint = convertVerticalDLUsToPixels(BAR_DLUS);
		gd.horizontalAlignment = GridData.FILL;
		gd.grabExcessHorizontalSpace = true;
		gd.horizontalSpan = 2;
		progressIndicator.setLayoutData(gd);
		
		subTaskLabel = new Label(parent, SWT.LEFT | SWT.WRAP);
		gd = new GridData(GridData.FILL_HORIZONTAL);
		gd.heightHint = convertVerticalDLUsToPixels(LABEL_DLUS);
		gd.horizontalSpan = 2;
		subTaskLabel.setLayoutData(gd);
		subTaskLabel.setFont(parent.getFont());