API: charts PieChart.js (YUI Library)

# Yahoo! UI Library

### Charts Widget 2.9.0

Yahoo! UI Library > charts > PieChart.js (source view)
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    /**
     * PieChart class for the YUI Charts widget.
     *
     * @namespace YAHOO.widget
     * @class PieChart
     * @uses YAHOO.widget.Chart
     * @constructor
     * @param containerId {HTMLElement} Container element for the Flash Player instance.
     * @param dataSource {YAHOO.util.DataSource} DataSource instance.
     * @param attributes {object} (optional) Object literal of configuration values.
     */
    YAHOO.widget.PieChart = function(containerId, dataSource, attributes)
    {
    	YAHOO.widget.PieChart.superclass.constructor.call(this, "pie", containerId, dataSource, attributes);
    };

    YAHOO.lang.extend(YAHOO.widget.PieChart, YAHOO.widget.Chart,
    {
    	/**
    	 * Initializes the attributes.
    	 *
    	 * @method _initAttributes
    	 * @private
    	 */
    	_initAttributes: function(attributes)
    	{
    		YAHOO.widget.PieChart.superclass._initAttributes.call(this, attributes);

    		/**
    		 * @attribute dataField
    		 * @description The field in each item that corresponds to the data value.
    		 * @type String
    		 */
    		this.setAttributeConfig("dataField",
    		{
    			validator: YAHOO.lang.isString,
    			method: this._setDataField,
    			getter: this._getDataField
    		});

    		/**
    		 * @attribute categoryField
    		 * @description The field in each item that corresponds to the category value.
    		 * @type String
    		 */
    		this.setAttributeConfig("categoryField",
    		{
    			validator: YAHOO.lang.isString,
    			method: this._setCategoryField,
    			getter: this._getCategoryField
    		});
    	},

    	/**
    	 * Getter for the dataField attribute.
    	 *
    	 * @method _getDataField
    	 * @private
    	 */
    	_getDataField: function()
    	{
    		return this._swf.getDataField();
    	},

    	/**
    	 * Setter for the dataField attribute.
    	 *
    	 * @method _setDataField
    	 * @private
    	 */
    	_setDataField: function(value)
    	{
    		this._swf.setDataField(value);
    	},

    	/**
    	 * Getter for the categoryField attribute.
    	 *
    	 * @method _getCategoryField
    	 * @private
    	 */
    	_getCategoryField: function()
    	{
    		return this._swf.getCategoryField();
    	},

    	/**
    	 * Setter for the categoryField attribute.
    	 *
    	 * @method _setCategoryField
    	 * @private
    	 */
    	_setCategoryField: function(value)
    	{
    		this._swf.setCategoryField(value);
    	}
    });

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