Bug 128425 [Help] Help button should not show up in dialogs without help context ID
I20060216-2000 The Help button should not show up in dialogs without help context ID. Examples in this build are the 'Source > Clean Up...' wizard or 'plugin context menu > PDE Tools > Organize Manifests...'.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/TrayDialog.java
super(parentShell);
	}
	/**
	 * Closes this dialog's tray, disposing its widgets.
	 * 
	 * @throws IllegalStateException if the tray was not open
	 */
	public void closeTray() throws IllegalStateException {
		if (getTray() == null) {
			throw new IllegalStateException("Tray was not open"); 
		}
		int trayWidth = trayControl.getSize().x + leftSeparator.getSize().x + sash.getSize().x + rightSeparator.getSize().x;
		trayControl.dispose();
		trayControl = null;
		tray = null;
		leftSeparator.dispose();
		leftSeparator = null;
		rightSeparator.dispose();
		rightSeparator = null;
		sash.dispose();
		sash = null;
		Shell shell = getShell();
		Rectangle bounds = shell.getBounds();
		shell.setBounds(bounds.x + ((getDefaultOrientation() == SWT.RIGHT_TO_LEFT) ? trayWidth : 0), bounds.y, bounds.width - trayWidth, bounds.height);
	}
	
    /* (non-Javadoc)
     * @see org.eclipse.jface.dialogs.Dialog#createButtonBar(org.eclipse.swt.widgets.Composite)
     */
	protected Control createButtonBar(Composite parent) {