Bug 192171 Layout still display css style from library after removing library.[01]
Description: Layout still display css style from library after removing library. Build number:2.2.0.v20070612 Steps to reproduce: 1. Add a css file in Library Explorer 2. New a library file. 3. Use css file in library default theme. 4. New a report and use the library. 5. Insert a label and apply the style from library. 6. Remove the library in report Outline. Expected result: Style effect disappears from label in Layout. Actual result: Label in Layout still displays the style effect. Error log:N/A
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/library/LibraryThemeTest.java
assertEquals( CssException.DESIGN_EXCEPTION_DUPLICATE_CSS, e
					.getErrorCode( ) );
		}
		
		LabelHandle labelHandle = libraryHandle.getElementFactory( ).newLabel(
				"label" );
		libraryHandle.getComponents( ).add( labelHandle );
		labelHandle.setStyle( (SharedStyleHandle) styles.get( 0 ) );
		
		assertTrue( themeHandle.canDropCssStyleSheet( sheetHandle ));
		
		assertNotNull( labelHandle.getStyle( ) );
		
		themeHandle.dropCss( sheetHandle );
		assertNull( themeHandle.includeCssesIterator( ).next( ) );
		assertNull( labelHandle.getStyle( ) );
		assertNull( labelHandle.getElement( ).getStyle( ) );
		assertFalse( themeHandle.canDropCssStyleSheet( sheetHandle ));
		assertNull( sheetHandle.getContainerHandle( ));
		
		themeHandle.addCss( "base.css" ); 
		styles = themeHandle.getAllStyles( );
		assertEquals( 5, styles.size( ) );
		
	}
	/**
	 * Test change theme with css style
	 * 
	 * @throws Exception
	 */