Bug 151960 Library element popup menu display is wrong.
1:Creat a libray, add a table to this libray. 2:public this library. 3:Creat a report design. 4:Open the library explore, drag the table to the layout editor. 5:Select the table row, copy the selection row. 6:Select other row, clik the right button of the mouse to popup the menu . The result:Paste action and insert copied column action is highlight.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/RowBandAdapter.java
/**
	 * Returns the element where the copy/paste operation occurs.
	 * 
	 * @return the element
	 */
	protected abstract ReportItemHandle getElementHandle( );
	/**
	 * Returns the module where the element belongs to.
	 * 
	 * @return the module
	 */
	protected Module getModule( )
	{
		return getElementHandle( ).getModule( );
	}
	/**
	 * Returns the number of columns in the element.
	 * 
	 * @return the number of columns in the element
	 */
	protected abstract int getColumnCount( );
	
	/**
	 * Returns count of rows.
	 * @return count of rows.
	 */
	protected abstract int getRowCount( );
	
	/**
	 * Computes column count in one row.