Bug 191168 [Regression]Exception occurs when resize masterpage in library
Description: Exception occurs when resize masterpage in library. Build number:2.2.0.v20070606-0630 Regression bug:187443 Steps to reproduce: 1. New a library. 2. Go to Master Page, resize the master page using the ruler. Expected result: 1. Layout works correctly. 2. No exception is thrown out. Error log: An unexpected internal exception occurred.Please see log for detail. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20070606-0630 Error Code:Error.GUIException.invokedByUnexpectedException Error Message:org.eclipse.birt.report.designer.internal.lib.lalyout.LibraryReportDesignLayout
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
Library library = (Library) iter.next( );
			allLibraries.addAll( library.getLibraries( newLevel ) );
		}
		return allLibraries;
	}
	/**
	 * Returns only libraries this module includes directly.
	 * 
	 * @return list of libraries.
	 */
	public List getLibraries( )
	{
		return getLibraries( IAccessControl.DIRECTLY_INCLUDED_LEVEL );
	}
	/**
	 * Inserts the library to the given position.
	 * 
	 * @param library
	 *            the library to insert
	 * @param posn
	 *            at which the given library is inserted.
	 */
	public void insertLibrary( Library library, int posn )
	{
		if ( libraries == null )
			libraries = new ArrayList( );
		
		assert posn >= 0 && posn <= libraries.size( );
		libraries.add( posn, library );
	}