Bug 36141 Misbehaving property page causes property dialog to fail to open
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
}
		}
	}
	/**
	 * Notifies that the window's close button was pressed, 
	 * the close menu was selected, or the ESCAPE key pressed.
	 * <p>
	 * The default implementation of this framework method
	 * sets the window's return code to <code>CANCEL</code>
	 * and closes the window using <code>close</code>.
	 * Subclasses may extend or reimplement.
	 * </p>
	 */
	protected void handleShellCloseEvent() {
		
		cancelPressed();
	}
	/**
	 * Notifies of the pressing of the Help button.
	 * <p>
	 * The default implementation of this framework method
	 * calls <code>performHelp</code> on the currently active page.
	 * </p>
	 */
	protected void helpPressed() {
		if (currentPage != null) {
			currentPage.performHelp();
		}
	}
	/**