Bug 212984 Disable Dimension or Level drag into outline
Description: The levels are not auto-outspread when drag the dimension from Data explorer to Outline Build number: 2.3.0.v20071214 Steps to reproduce: 1, New a cube with multiple levels in one dimension 2, New a crosstab 3, Drag the dimension from cube to crosstab's column area in Outline Expected result: The levels are auto-outspread. Actual result: The levels are not auto-outspread. Error log:
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/editors/model/NormalCrosstabCellAdapter.java
{
		return getCrosstabItemHandle( ).hashCode( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	public boolean equals( Object obj )
	{
		return super.equals( obj );
	}
	/* (non-Javadoc)
	 * @see org.eclipse.birt.report.designer.util.IVirtualValidator#handleValidate(java.lang.Object)
	 */
	public boolean handleValidate( Object obj )
	{
		CrosstabReportItemHandle crosstab = getCrosstabCellHandle( ).getCrosstab( );
		if (obj instanceof Object[])
		{
			Object[] objects = (Object[])obj;
			int len = objects.length;
			if (len == 0)
			{
				return false;
			}
			if (len == 1)
			{
				return handleValidate( objects[0] );
			}