Proyectos de Subversion Moodle

YUI.add('yui2-charts', function(Y) {

    var YAHOO    = Y.YUI2;

    /*

Copyright (c) 2011, Yahoo! Inc. All rights reserved.

Code licensed under the BSD License:

http://developer.yahoo.com/yui/license.html

version: 2.9.0

*/

/**

 * The Charts widget provides a Flash control for displaying data

 * graphically by series across A-grade browsers with Flash Player installed.

 *

 * @module charts

 * @requires yahoo, dom, event, datasource

 * @title Charts Widget

 */

/****************************************************************************/

/****************************************************************************/

/****************************************************************************/

/**

 * Chart class for the YUI Charts widget.

 *

 * @namespace YAHOO.widget

 * @class Chart

 * @uses YAHOO.util.AttributeProvider

 * @constructor

 * @param type {String} The char type. May be "line", "column", "bar", or "pie"

 * @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.Chart = function(type, containerId, dataSource, configurationAttributes)

{

	this._type = type;

	this._dataSource = dataSource;

	var possibleParams = {align:"", allowNetworking:"", allowScriptAccess:"", base:"", bgcolor:"", menu:"", name:"", quality:"", salign:"", scale:"", tabindex:"", wmode:""};

	var attributes = {fixedAttributes:{allowScriptAccess:"always"}, flashVars:{allowedDomain : document.location.hostname}, backgroundColor:"#ffffff", host:this, version:9.045};

	for(var i in configurationAttributes)

	{

		if(possibleParams.hasOwnProperty(i))

		{

			attributes.fixedAttributes[i] = configurationAttributes[i];

		}

		else

		{

			attributes[i] = configurationAttributes[i];

		}

	}

	this._id = attributes.id = attributes.id || YAHOO.util.Dom.generateId(null, "yuigen");

	this._swfURL = YAHOO.widget.Chart.SWFURL;

	this._containerID = containerId;

	this._attributes = attributes;

	this._swfEmbed = new YAHOO.widget.SWF(containerId, YAHOO.widget.Chart.SWFURL, attributes);

	this._swf = this._swfEmbed.swf;

	this._swfEmbed.subscribe("swfReady", this._eventHandler, this, true);

	/**

	 * Fires when the SWF is initialized and communication is possible.

	 * @event contentReady

	 */

	//Fix for iframe cross-domain issue with FF2x

	try

	{

		this.createEvent("contentReady");

	}

	catch(e){}

	/**

	 * Fires when the user moves the mouse over the bounds of an item renderer in the chart.

	 *

	 * @event itemMouseOverEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemMouseOverEvent");

	/**

	 * Fires when the user moves the mouse out of the bounds of an item renderer in the chart.

	 *

	 * @event itemMouseOutEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemMouseOutEvent");

	/**

	 * Fires when the user clicks an item renderer in the chart with the mouse.

	 *

	 * @event itemClickEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemClickEvent");

	/**

	 * Fires when the user double-clicks an item renderer in the chart with the mouse.

	 *

	 * @event itemDoubleClickEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemDoubleClickEvent");

	/**

	 * Fires when the user presses the mouse down on an item to initiate a drag action.

	 *

	 * @event itemDragStartEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemDragStartEvent");

	/**

	 * Fires when the user moves the mouse during a drag action.

	 *

	 * @event itemDragEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemDragEvent");

	/**

	 * Fires when the user releases the mouse during a drag action.

	 *

	 * @event itemDragEndEvent

	 * @param event.type {String} The event type

	 * @param event.item {Object} The data displayed by the renderer

	 * @param event.index {Number} The position within the series that the item appears.

	 * @param event.seriesIndex {Number} The position within the series definition that the series appears.

	 * @param event.x {Number} The horizontal position of the mouse, relative to the SWF.

	 * @param event.y {Number} The vertical position of the mouse, relative to the SWF.

	 */

	this.createEvent("itemDragEndEvent");

};

YAHOO.extend(YAHOO.widget.Chart, YAHOO.util.AttributeProvider,

{

	/**

	 * The type of this chart instance.

	 * @property _type

	 * @type String

	 * @private

	 */

	_type: null,

	/**

	 * The id returned from the DataSource's setInterval function.

	 * @property _pollingID

	 * @type Number

	 * @private

	 */

	_pollingID: null,

	/**

	 * The time, in ms, between requests for data.

	 * @property _pollingInterval

	 * @type Number

	 * @private

	 */

	_pollingInterval: null,

	/**

	 * Stores a reference to the dataTipFunction created by

	 * YAHOO.widget.Chart.createProxyFunction()

	 * @property _dataTipFunction

	 * @type String

	 * @private

	 */

	_dataTipFunction: null,

	/**

	 * Stores a reference to the legendLabelFunction created by

	 * YAHOO.widget.Chart.createProxyFunction()

	 * @property _legendLabelFunction

	 * @type String

	 * @private

	 */

	_legendLabelFunction: null,

	/**

	 * Stores references to series function values created by

	 * YAHOO.widget.Chart.createProxyFunction()

	 * @property _seriesFunctions

	 * @type Array

	 * @private

	 */

	_seriesFunctions: null,

	/**

	 * Public accessor to the unique name of the Chart instance.

	 *

	 * @method toString

	 * @return {String} Unique name of the Chart instance.

	 */

	toString: function()

	{

		return "Chart " + this._id;

	},

	/**

	 * Sets a single style value on the Chart instance.

	 *

	 * @method setStyle

	 * @param name {String} Name of the Chart style value to change.

	 * @param value {Object} New value to pass to the Chart style.

	 */

	setStyle: function(name, value)

	{

		//we must jsonify this because Flash Player versions below 9.0.60 don't handle

		//complex ExternalInterface parsing correctly

		value = YAHOO.lang.JSON.stringify(value);

		this._swf.setStyle(name, value);

	},

	/**

	 * Resets all styles on the Chart instance.

	 *

	 * @method setStyles

	 * @param styles {Object} Initializer for all Chart styles.

	 */

	setStyles: function(styles)

	{

		//we must jsonify this because Flash Player versions below 9.0.60 don't handle

		//complex ExternalInterface parsing correctly

		styles = YAHOO.lang.JSON.stringify(styles);

		this._swf.setStyles(styles);

	},

	/**

	 * Sets the styles on all series in the Chart.

	 *

	 * @method setSeriesStyles

	 * @param styles {Array} Initializer for all Chart series styles.

	 */

	setSeriesStyles: function(styles)

	{

		//we must jsonify this because Flash Player versions below 9.0.60 don't handle

		//complex ExternalInterface parsing correctly

		for(var i = 0; i < styles.length; i++)

		{

			styles[i] = YAHOO.lang.JSON.stringify(styles[i]);

		}

		this._swf.setSeriesStyles(styles);

	},

	destroy: function()

	{

		//stop polling if needed

		if(this._dataSource !== null)

		{

			if(this._pollingID !== null)

			{

				this._dataSource.clearInterval(this._pollingID);

				this._pollingID = null;

			}

		}

		//remove proxy functions

		if(this._dataTipFunction)

		{

			YAHOO.widget.Chart.removeProxyFunction(this._dataTipFunction);

		}

		if(this._legendLabelFunction)

		{

			YAHOO.widget.Chart.removeProxyFunction(this._legendLabelFunction);

		}

		//kill the Flash Player instance

		if(this._swf)

		{

			var container = YAHOO.util.Dom.get(this._containerID);

			container.removeChild(this._swf);

		}

		var instanceName = this._id;

		//null out properties

		for(var prop in this)

		{

			if(YAHOO.lang.hasOwnProperty(this, prop))

			{

				this[prop] = null;

			}

		}

	},

	/**

	 * Initializes the attributes.

	 *

	 * @method _initAttributes

	 * @private

	 */

	_initAttributes: function(attributes)

	{

		//YAHOO.widget.Chart.superclass._initAttributes.call(this, attributes);

		/**

		 * @attribute wmode

		 * @description Sets the window mode of the Flash Player control. May be

		 *		"window", "opaque", or "transparent". Only available in the constructor

		 *		because it may not be set after Flash Player has been embedded in the page.

		 * @type String

		 */

		/**

		 * @attribute expressInstall

		 * @description URL pointing to a SWF file that handles Flash Player's express

		 *		install feature. Only available in the constructor because it may not be

		 *		set after Flash Player has been embedded in the page.

		 * @type String

		 */

		/**

		 * @attribute version

		 * @description Minimum required version for the SWF file. Only available in the constructor because it may not be

		 *		set after Flash Player has been embedded in the page.

		 * @type String

		 */

		/**

		 * @attribute backgroundColor

		 * @description The background color of the SWF. Only available in the constructor because it may not be

		 *		set after Flash Player has been embedded in the page.

		 * @type String

		 */

		/**

		 * @attribute altText

		 * @description The alternative text to provide for screen readers and other assistive technology.

		 * @type String

		 */

		this.setAttributeConfig("altText",

		{

			method: this._setAltText,

			getter: this._getAltText

		});

		/**

		 * @attribute swfURL

		 * @description Absolute or relative URL to the SWF displayed by the Chart. Only available in the constructor because it may not be

		 *		set after Flash Player has been embedded in the page.

		 * @type String

		 */

		this.setAttributeConfig("swfURL",

		{

			getter: this._getSWFURL

		});

		/**

		 * @attribute request

		 * @description Request to be sent to the Chart's DataSource.

		 * @type String

		 */

		this.setAttributeConfig("request",

		{

			method: this._setRequest,

			getter: this._getRequest

		});

		/**

		 * @attribute dataSource

		 * @description The DataSource instance to display in the Chart.

		 * @type DataSource

		 */

		this.setAttributeConfig("dataSource",

		{

			method: this._setDataSource,

			getter: this._getDataSource

		});

		/**

		 * @attribute series

		 * @description Defines the series to be displayed by the Chart.

		 * @type Array

		 */

		this.setAttributeConfig("series",

		{

			method: this._setSeriesDefs,

			getter: this._getSeriesDefs

		});

		/**

		 * @attribute categoryNames

		 * @description Defines the names of the categories to be displayed in the Chart..

		 * @type Array

		 */

		this.setAttributeConfig("categoryNames",

		{

			validator: YAHOO.lang.isArray,

			method: this._setCategoryNames,

			getter: this._getCategoryNames

		});

		/**

		 * @attribute dataTipFunction

		 * @description The string representation of a globally-accessible function

		 * that may be called by the SWF to generate the datatip text for a Chart's item.

		 * @type String

		 */

		this.setAttributeConfig("dataTipFunction",

		{

			method: this._setDataTipFunction,

			getter: this._getDataTipFunction

		});

		/**

		 * @attribute legendLabelFunction

		 * @description The string representation of a globally-accessible function

		 * that may be called by the SWF to format the labels of a Chart's legend.

		 * @type String

		 */

		this.setAttributeConfig("legendLabelFunction",

		{

			method: this._setLegendLabelFunction,

			getter: this._getLegendLabelFunction

		});

		/**

		 * @attribute polling

		 * @description A numeric value indicating the number of milliseconds between

		 * polling requests to the DataSource.

		 * @type Number

		 */

		this.setAttributeConfig("polling",

		{

			method: this._setPolling,

			getter: this._getPolling

		});

	},

	/**

	 * Handles swfReady event from SWF.

	 *

	 * @method _eventHandler

	 * @private

	 */

	_eventHandler: function(event)

	{

		if(event.type == "swfReady")

		{

   			this._swf = this._swfEmbed._swf;

			this._loadHandler();

   			this.fireEvent("contentReady");

		}

	},

	/**

	 * Called when the SWF is ready for communication. Sets the type, initializes

	 * the styles, and sets the DataSource.

	 *

	 * @method _loadHandler

	 * @private

	 */

	_loadHandler: function()

	{

		//the type is set separately because it must be first!

		if(!this._swf || !this._swf.setType) return;

		this._swf.setType(this._type);

		//set initial styles

		if(this._attributes.style)

		{

			var style = this._attributes.style;

			this.setStyles(style);

		}

		this._initialized = false;

		this._initAttributes(this._attributes);

		this.setAttributes(this._attributes, true);

		this._initialized = true;

		if(this._dataSource)

		{

			this.set("dataSource", this._dataSource);

		}

	},

	/**

	 * Sends (or resends) the request to the DataSource.

	 *

	 * @method refreshData

	 */

	refreshData: function()

	{

		if(!this._initialized)

		{

			return;

		}

		if(this._dataSource !== null)

		{

			if(this._pollingID !== null)

			{

				this._dataSource.clearInterval(this._pollingID);

				this._pollingID = null;

			}

			if(this._pollingInterval > 0)

			{

				this._pollingID = this._dataSource.setInterval(this._pollingInterval, this._request, this._loadDataHandler, this);

			}

			this._dataSource.sendRequest(this._request, this._loadDataHandler, this);

		}

	},

	/**

	 * Called when the DataSource receives new data. The series definitions are used

	 * to build a data provider for the SWF chart.

	 *

	 * @method _loadDataHandler

	 * @private

	 */

	_loadDataHandler: function(request, response, error)

	{

		if(this._swf)

		{

			if(error)

			{

				YAHOO.log("Unable to load data.", "error");

			}

			else

			{

				var i;

				if(this._seriesFunctions)

				{

					var count = this._seriesFunctions.length;

					for(i = 0; i < count; i++)

					{

						YAHOO.widget.Chart.removeProxyFunction(this._seriesFunctions[i]);

					}

					this._seriesFunctions = null;

				}

				this._seriesFunctions = [];

				//make a copy of the series definitions so that we aren't

				//editing them directly.

				var dataProvider = [];

				var seriesCount = 0;

				var currentSeries = null;

				if(this._seriesDefs !== null)

				{

					seriesCount = this._seriesDefs.length;

					for(i = 0; i < seriesCount; i++)

					{

						currentSeries = this._seriesDefs[i];

						var clonedSeries = {};

						for(var prop in currentSeries)

						{

							if(YAHOO.lang.hasOwnProperty(currentSeries, prop))

							{

								if(prop == "style")

								{

									if(currentSeries.style !== null)

									{

										clonedSeries.style = YAHOO.lang.JSON.stringify(currentSeries.style);

									}

								}

								else if(prop == "labelFunction")

								{

									if(currentSeries.labelFunction !== null)

									{

										clonedSeries.labelFunction = YAHOO.widget.Chart.getFunctionReference(currentSeries.labelFunction);

										this._seriesFunctions.push(clonedSeries.labelFunction);

									}

								}

								else if(prop == "dataTipFunction")

								{

									if(currentSeries.dataTipFunction !== null)

									{

										clonedSeries.dataTipFunction = YAHOO.widget.Chart.getFunctionReference(currentSeries.dataTipFunction);

										this._seriesFunctions.push(clonedSeries.dataTipFunction);

									}

								}

								else if(prop == "legendLabelFunction")

								{

									if(currentSeries.legendLabelFunction !== null)

									{

										clonedSeries.legendLabelFunction = YAHOO.widget.Chart.getFunctionReference(currentSeries.legendLabelFunction);

										this._seriesFunctions.push(clonedSeries.legendLabelFunction);

									}

								}

								else

								{

									clonedSeries[prop] = currentSeries[prop];

								}

							}

						}

						dataProvider.push(clonedSeries);

					}

				}

				if(seriesCount > 0)

				{

					for(i = 0; i < seriesCount; i++)

					{

						currentSeries = dataProvider[i];

						if(!currentSeries.type)

						{

							currentSeries.type = this._type;

						}

						currentSeries.dataProvider = response.results;

					}

				}

				else

				{

					var series = {type: this._type, dataProvider: response.results};

					dataProvider.push(series);

				}

				try

				{

					if(this._swf.setDataProvider) this._swf.setDataProvider(dataProvider);

				}

				catch(e)

				{

					this._swf.setDataProvider(dataProvider);

				}

			}

		}

	},

	/**

	 * Storage for the request attribute.

	 *

	 * @property _request

	 * @private

	 */

	_request: "",

	/**

	 * Getter for the request attribute.

	 *

	 * @method _getRequest

	 * @private

	 */

	_getRequest: function()

	{

		return this._request;

	},

	/**

	 * Setter for the request attribute.

	 *

	 * @method _setRequest

	 * @private

	 */

	_setRequest: function(value)

	{

		this._request = value;

		this.refreshData();

	},

	/**

	 * Storage for the dataSource attribute.

	 *

	 * @property _dataSource

	 * @private

	 */

	_dataSource: null,

	/**

	 * Getter for the dataSource attribute.

	 *

	 * @method _getDataSource

	 * @private

	 */

	_getDataSource: function()

	{

		return this._dataSource;

	},

	/**

	 * Setter for the dataSource attribute.

	 *

	 * @method _setDataSource

	 * @private

	 */

	_setDataSource: function(value)

	{

		this._dataSource = value;

		this.refreshData();

	},

	/**

	 * Storage for the series attribute.

	 *

	 * @property _seriesDefs

	 * @private

	 */

	_seriesDefs: null,

	/**

	 * Getter for the series attribute.

	 *

	 * @method _getSeriesDefs

	 * @private

	 */

	_getSeriesDefs: function()

	{

		return this._seriesDefs;

	},

	/**

	 * Setter for the series attribute.

	 *

	 * @method _setSeriesDefs

	 * @private

	 */

	_setSeriesDefs: function(value)

	{

		this._seriesDefs = value;

		this.refreshData();

	},

	/**

	 * Getter for the categoryNames attribute.

	 *

	 * @method _getCategoryNames

	 * @private

	 */

	_getCategoryNames: function()

	{

		return this._swf.getCategoryNames();

	},

	/**

	 * Setter for the categoryNames attribute.

	 *

	 * @method _setCategoryNames

	 * @private

	 */

	_setCategoryNames: function(value)

	{

		this._swf.setCategoryNames(value);

	},

	/**

	 * Setter for the dataTipFunction attribute.

	 *

	 * @method _setDataTipFunction

	 * @private

	 */

	_setDataTipFunction: function(value)

	{

		if(this._dataTipFunction)

		{

			YAHOO.widget.Chart.removeProxyFunction(this._dataTipFunction);

		}

		if(value)

		{

			this._dataTipFunction = value = YAHOO.widget.Chart.getFunctionReference(value);

		}

		this._swf.setDataTipFunction(value);

	},

	/**

	 * Setter for the legendLabelFunction attribute.

	 *

	 * @method _setLegendLabelFunction

	 * @private

	 */

	_setLegendLabelFunction: function(value)

	{

		if(this._legendLabelFunction)

		{

			YAHOO.widget.Chart.removeProxyFunction(this._legendLabelFunction);

		}

		if(value)

		{

			this._legendLabelFunction = value = YAHOO.widget.Chart.getFunctionReference(value);

		}

		this._swf.setLegendLabelFunction(value);

	},

    /**

     * Getter for the legendLabelFunction attribute.

     *

     * @method _getLegendLabelFunction

     * @private

     */

    _getLegendLabelFunction: function()

    {

        return this._legendLabelFunction;

    },

	/**

	 * Getter for the polling attribute.

	 *

	 * @method _getPolling

	 * @private

	 */

	_getPolling: function()

	{

		return this._pollingInterval;

	},

	/**

	 * Setter for the polling attribute.

	 *

	 * @method _setPolling

	 * @private

	 */

	_setPolling: function(value)

	{

		this._pollingInterval = value;

		this.refreshData();

	},

	/**

	 * The javascript wrapper for the swf object

	 *

	 * @property _swfEmbed

	 * @type swf

	 * @private

	 */

	_swfEmbed: null,

	/**

	 * The URL of the SWF file.

	 * @property _swfURL

	 * @type String

	 * @private

	 */

	_swfURL: null,

	/**

	 * The ID of the containing DIV.

	 * @property _containerID

	 * @type String

	 * @private

	 */

	_containerID: null,

	/**

	 * A reference to the embedded SWF file.

	 * @property _swf

	 * @private

	 */

	_swf: null,

	/**

	 * The id of this instance.

	 * @property _id

	 * @type String

	 * @private

	 */

	_id: null,

	/**

	 * Indicates whether the SWF has been initialized and is ready

	 * to communicate with JavaScript

	 * @property _initialized

	 * @type Boolean

	 * @private

	 */

	_initialized: false,

	/**

	 * The initializing attributes are stored here until the SWF is ready.

	 * @property _attributes

	 * @type Object

	 * @private

	 */

	_attributes: null, //the intializing attributes

	set: function(name, value)

	{

		//save all the attributes in case the swf reloads

		//so that we can pass them in again

		this._attributes[name] = value;

		YAHOO.widget.Chart.superclass.set.call(this, name, value);

	},

	/**

	 * Getter for swfURL attribute.

	 *

	 * @method _getSWFURL

	 * @private

	 */

	_getSWFURL: function()

	{

		return this._swfURL;

	},

	/**

	 * Getter for altText attribute.

	 *

	 * @method _getAltText

	 * @private

	 */

	_getAltText: function()

	{

		return this._swf.getAltText();

	},

	/**

	 * Setter for altText attribute.

	 *

	 * @method _setAltText

	 * @private

	 */

	_setAltText: function(value)

	{

	 	this._swf.setAltText(value);

	}

});

/**

 * The number of proxy functions that have been created.

 * @static

 * @private

 */

YAHOO.widget.Chart.proxyFunctionCount = 0;

/**

 * Creates a globally accessible function that wraps a function reference.

 * Returns the proxy function's name as a string for use by the SWF through

 * ExternalInterface.

 *

 * @method YAHOO.widget.Chart.createProxyFunction

 * @static

 * @private

 */

YAHOO.widget.Chart.createProxyFunction = function(func, scope)

{

	var scope = scope || null;

	var index = YAHOO.widget.Chart.proxyFunctionCount;

	YAHOO.widget.Chart["proxyFunction" + index] = function()

	{

		return func.apply(scope, arguments);

	};

	YAHOO.widget.Chart.proxyFunctionCount++;

	return "YAHOO.widget.Chart.proxyFunction" + index.toString();

};

/**

 * Uses YAHOO.widget.Chart.createProxyFunction to return string

 * reference to a function.

 *

 * @method YAHOO.widget.Chart.getFunctionReference

 * @static

 * @private

 */

YAHOO.widget.Chart.getFunctionReference = function(value)

{

	if(typeof value == "function")

	{

		value = YAHOO.widget.Chart.createProxyFunction(value);

	}

	else if(value.func && typeof value.func == "function")

	{

		var args = [value.func];

		if(value.scope && typeof value.scope == "object")

		{

			args.push(value.scope);

		}

		value = YAHOO.widget.Chart.createProxyFunction.apply(this, args);

	}

	return value;