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com/yahoo/astra/fl/charts/axes/IStackingAxis.as

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+/*
+Copyright (c) 2009 Yahoo! Inc.  All rights reserved.  
+The copyrights embodied in the content of this file are licensed under the BSD (revised) open source license
+*/
+package com.yahoo.astra.fl.charts.axes
+{
+	import com.yahoo.astra.fl.charts.series.IStackedSeries;
+	
+	/**
+	 * A type of axis that allows values to be stacked.
+	 * 
+	 * @author Josh Tynjala
+	 */
+	public interface IStackingAxis extends IAxis
+	{
+		
+	//--------------------------------------
+	//  Properties
+	//--------------------------------------
+		
+		/**
+		 * If true, the axis will allow the stacking of series that implement
+		 * the interface IStackedSeries.
+		 * 
+		 * <p>Must be explicitly enabled.
+		 * 
+		 * @see com.yahoo.astra.fl.charts.series.IStackedSeries
+		 */
+		function get stackingEnabled():Boolean;
+		
+		/**
+		 * @private
+		 */
+		function set stackingEnabled(value:Boolean):void;
+		
+	//--------------------------------------
+	//  Methods
+	//--------------------------------------
+	
+		/**
+		 * Calculates the sum of values if they were stacked on the axis.
+		 * The first value is important because some axis types, such as
+		 * NumericAxis, may differentiate between positive and negative values.
+		 * 
+		 * @see NumericAxis
+		 */
+		function stack(top:Object, ...rest:Array):Object;
+	}
+}