Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
*/
	public void addDisposeListener( IDisposeListener listener )
	{
		if ( disposeListeners == null )
			disposeListeners = new ArrayList( );
		if ( !disposeListeners.contains( listener ) )
			disposeListeners.add( listener );
	}
	/**
	 * Adds one resource change listener. The duplicate listener will not be
	 * added.
	 * 
	 * @param listener
	 *            the resource change listener to add
	 */
	public void addResourceChangeListener( IResourceChangeListener listener )
	{
		if ( resourceChangeListeners == null )
			resourceChangeListeners = new ArrayList( );
		if ( !resourceChangeListeners.contains( listener ) )
			resourceChangeListeners.add( listener );
	}
	/**
	 * Removes one dispose listener. If the listener not registered, then the
	 * request is silently ignored.
	 * 
	 * @param listener
	 *            the dispose listener to remove
	 * @return <code>true</code> if <code>listener</code> is successfully
	 *         removed. Otherwise <code>false</code>.