Bug 196767 "Finish" button does not take effect when first use CSS file then import CSS style in a library [0303]
Description: "OK" button is disabled when first use CSS file then import CSS style in a library. Build number: 2.2.1.v20070717-0630 Steps to reproduce: 1. New a library, in Outline view, right click to select default Theme->Use CSS File..., select one css file, click "OK". 2. in Outline view, right click to select default Theme->Import CSS Style..., select one css file, click "Select All" button, click "OK". Expected result: "OK" button is enabled. Actual result: "Ok" button is disabled. Error log: N/A
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ThemeHandle.java
adapter.dropCss( sheetHandle );
	}
	/**
	 * Check style sheet can be droped or not.
	 * 
	 * @param sheetHandle
	 * @return <code>true</code> can be dropped.else return <code>false</code>
	 */
	public boolean canDropCssStyleSheet( CssStyleSheetHandle sheetHandle )
	{
		CssStyleSheetHandleAdapter adapter = new CssStyleSheetHandleAdapter(
				module, getElement( ) );
		return adapter.canDropCssStyleSheet( sheetHandle );
	}
	/**
	 * Check style sheet can be added or not.
	 * 
	 * @param sheetHandle
	 * @return <code>true</code> can be added.else return <code>false</code>
	 */
	public boolean canAddCssStyleSheet( CssStyleSheetHandle sheetHandle )
	{
		CssStyleSheetHandleAdapter adapter = new CssStyleSheetHandleAdapter(
				module, getElement( ) );
		return adapter.canAddCssStyleSheet( sheetHandle );
	}
	/**
	 * Check style sheet can be added or not.
	 * 
	 * @param fileName