Bug 184602 [Progress] "Widget is disposed" when setting builders twice during build
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/ProgressMonitorDialog.java
cancel.setEnabled(b);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.dialogs.IconAndMessageDialog#getImage()
	 */
	protected Image getImage() {
		return getInfoImage();
	}
	/**
	 * Set the message in the message label.
	 * 
	 * @param messageString
	 *            The string for the new message.
	 * @param force
	 *            If force is true then always set the message text.
	 */
	private void setMessage(String messageString, boolean force) {
		
		message = messageString == null ? "" : messageString; 
		if (messageLabel == null || messageLabel.isDisposed()) {
			return;
		}
		if (force || messageLabel.isVisible()) {
			messageLabel.setToolTipText(message);
			messageLabel.setText(shortenText(message, messageLabel));
		}
	}
	/**