source: code/Website/open-flash-chart/charts/series/has_tooltip.as

package charts.series {
        
        /**
         * anything that wants to use our tooltips
         * must implement this interface
         */
        public interface has_tooltip {
                
                // get the tip string
                function get_tooltip():String;
                
                // this should return a Point
                function get_tip_pos():Object;
                
                // if true, show hover state,
                // if false the item should go
                // back to the ground state. Not hovered.
                function set_tip( b:Boolean ):void;
        }
}