Bug 65444 [R21PRES] Close button shown when views not closeable
RC1 build - run the browser example using the R2.1 presentation - the views have close buttons in the titlebar, but should not because the perspective has fixed="true" (meaning that all initial views are non-moveable and non-closeable)
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/r21/widgets/R21PaneFolder.java
Iterator iter = buttonListeners.iterator();
		
		while (iter.hasNext()) {
			R21PaneFolderButtonListener listener = (R21PaneFolderButtonListener)iter.next();
			
			listener.showList(event);
		}
	}
	
	/**
	 * Notifies all listeners that the close button was pressed
	 * 
	 * @param tabItem
	 */
	protected void notifyCloseListeners(CTabItem tabItem) {
		Iterator iter = buttonListeners.iterator();
		
		while (iter.hasNext()) {
			R21PaneFolderButtonListener listener = (R21PaneFolderButtonListener)iter.next();
			
			listener.closeButtonPressed(tabItem);
		}
	}
	public void addButtonListener(R21PaneFolderButtonListener listener) {
		buttonListeners.add(listener);
	}
	
	public void removeButtonListener(R21PaneFolderButtonListener listener) {
		buttonListeners.remove(listener);
	}