Bug 167545 Copy a cascading parameter group and paste it to another parameter group causes an exception thrown
Steps to reproduce: 1.Copy a cascading parameter group using short cut key "Ctrl+x"/"Ctrl+c", or choosing context menu "Cut"/"Copy"; 2.Paste it to another parameter group using short cut key "Ctrl+v", or choosing context menu "Paste"; Expected result: The source one is pasted in the destination. Actual result: An exception thrown org.eclipse.birt.report.model.api.command.ContentException: The Cascading Parameter Group("Source") is not allowed in the slot (parameters) of Parameter Group("Destination").
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
}
		}
		return null;
	}
	/**
	 * Converts an Integer value to an RGB object value, the Integer format is
	 * 0xRRGGBB.
	 * 
	 * @param rgbValue
	 *            Integer value.
	 * @return RGB value.
	 */
	public static RGB getRGBValue( int rgbValue )
	{
		if ( rgbValue == -1 )
		{
			return null;
		}
		return new RGB( ( rgbValue >> 16 ) & 0xff,
				( rgbValue >> 8 ) & 0xff,
				rgbValue & 0xff );
	}
	/**
	 * Converts an RGB object value to an Integer value, the Integer format is
	 * 0xRRGGBB.
	 * 
	 * @param rgb
	 *            RGB value.
	 * @return Integer value.
	 */