Bug 119599 [Dialogs] Every PopupDialiog is leaked if PopupDialolg.HOVER_SHELLSTYLE or SWT.ON_TOP is set
I20051206-1200 Every PopupDialiog is leaked if PopupDialolg.HOVER_SHELLSTYLE or SWT.ON_TOP is set. Reason: a deactivate listener is added to the popup shell's parent but is never removed.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/PopupDialog.java
* font.
	 */
	private Font infoFont;
	
	/**
	 * Font to be used for the title area text. Computed based on the dialog's
	 * font.
	 */
	private Font titleFont;
	/**
	 * Flags indicating whether we are listening for shell deactivate events,
	 * either those or our parent's. Used to prevent closure when a menu command
	 * is chosen or a secondary popup is launched.
	 */
	private boolean listenToDeactivate;
	private boolean listenToParentDeactivate;
	/**
	 * Flag indicating whether focus should be taken when the dialog is opened.
	 */
	private boolean takeFocusOnOpen = false;
	/**
	 * Flag specifying whether a menu should be shown that allows the user to
	 * move and resize.
	 */
	private boolean showDialogMenu = false;
	/**
	 * Flag specifying whether a menu action allowing the user to choose whether
	 * the dialog bounds should be persisted is to be shown.
	 */
	private boolean showPersistAction = false;