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Code Editor : series-bar.js

/*
YUI 3.17.2 (build 9c3c78e)
Copyright 2014 Yahoo! Inc. All rights reserved.
Licensed under the BSD License.
http://yuilibrary.com/license/
*/

YUI.add('series-bar', function (Y, NAME) {

/**
 * Provides functionality for creating a bar series.
 *
 * @module charts
 * @submodule series-bar
 */
/**
 * The BarSeries class renders bars positioned vertically along a category or time axis. The bars'
 * lengths are proportional to the values they represent along a horizontal axis.
 * and the relevant data points.
 *
 * @class BarSeries
 * @extends MarkerSeries
 * @uses Histogram
 * @constructor
 * @param {Object} config (optional) Configuration parameters.
 * @submodule series-bar
 */
Y.BarSeries = Y.Base.create("barSeries", Y.MarkerSeries, [Y.Histogram], {
    /**
     * Helper method for calculating the size of markers.
     *
     * @method _getMarkerDimensions
     * @param {Number} xcoord The x-coordinate representing the data point for the marker.
     * @param {Number} ycoord The y-coordinate representing the data point for the marker.
     * @param {Number} calculatedSize The calculated size for the marker. For a `BarSeries` is it the width. For a `ColumnSeries` it is the height.
     * @param {Number} offset Distance of position offset dictated by other marker series in the same graph.
     * @return Object
     * @private
     */
    _getMarkerDimensions: function(xcoord, ycoord, calculatedSize, offset)
    {
        var config = {
            top: ycoord + offset
        };
        if(xcoord >= this._leftOrigin)
        {
            config.left = this._leftOrigin;
            config.calculatedSize = xcoord - config.left;
        }
        else
        {
            config.left = xcoord;
            config.calculatedSize = this._leftOrigin - xcoord;
        }
        return config;
    },

/**
     * Resizes and positions markers based on a mouse interaction.
     *
     * @method updateMarkerState
     * @param {String} type state of the marker
     * @param {Number} i index of the marker
     * @protected
     */
    updateMarkerState: function(type, i)
    {
        if(this._markers && this._markers[i])
        {
            var styles = this._copyObject(this.get("styles").marker),
                markerStyles,
                state = this._getState(type),
                xcoords = this.get("xcoords"),
                ycoords = this.get("ycoords"),
                marker = this._markers[i],
                markers,
                seriesCollection = this.get("seriesTypeCollection"),
                seriesLen = seriesCollection ? seriesCollection.length : 0,
                seriesStyles,
                seriesSize = 0,
                offset = 0,
                renderer,
                n = 0,
                ys = [],
                order = this.get("order"),
                config;
            markerStyles = state === "off" || !styles[state] ? styles : styles[state];
            markerStyles.fill.color = this._getItemColor(markerStyles.fill.color, i);
            markerStyles.border.color = this._getItemColor(markerStyles.border.color, i);
            config = this._getMarkerDimensions(xcoords[i], ycoords[i], styles.height, offset);
            markerStyles.width = config.calculatedSize;
            markerStyles.height = Math.min(this._maxSize, markerStyles.height);
            marker.set(markerStyles);
            for(; n < seriesLen; ++n)
            {
                ys[n] = ycoords[i] + seriesSize;
                seriesStyles = seriesCollection[n].get("styles").marker;
                seriesSize += Math.min(this._maxSize, seriesStyles.height);
                if(order > n)
                {
                    offset = seriesSize;
                }
                offset -= seriesSize/2;
            }
            for(n = 0; n < seriesLen; ++n)
            {
                markers = seriesCollection[n].get("markers");
                if(markers)
                {
                    renderer = markers[i];
                    if(renderer && renderer !== undefined)
                    {
                        renderer.set("y", (ys[n] - seriesSize/2));
                    }
                }
            }
        }
    }
}, {
    ATTRS: {
        /**
         * Read-only attribute indicating the type of series.
         *
         * @attribute type
         * @type String
         * @default bar
         */
        type: {
            value: "bar"
        },

/**
         * Indicates the direction of the category axis that the bars are plotted against.
         *
         * @attribute direction
         * @type String
         */
        direction: {
            value: "vertical"
        }

/**
         * Style properties used for drawing markers. This attribute is inherited from `MarkerSeries`. Below are the default values:
         *  <dl>
         *      <dt>fill</dt><dd>A hash containing the following values:
         *          <dl>
         *              <dt>color</dt><dd>Color of the fill. The default value is determined by the order of the series on the graph. The color
         *              will be retrieved from the below array:<br/>
         *              `["#66007f", "#a86f41", "#295454", "#996ab2", "#e8cdb7", "#90bdbd","#000000","#c3b8ca", "#968373", "#678585"]`
         *              </dd>
         *              <dt>alpha</dt><dd>Number from 0 to 1 indicating the opacity of the marker fill. The default value is 1.</dd>
         *          </dl>
         *      </dd>
         *      <dt>border</dt><dd>A hash containing the following values:
         *          <dl>
         *              <dt>color</dt><dd>Color of the border. The default value is determined by the order of the series on the graph. The color
         *              will be retrieved from the below array:<br/>
         *              `["#205096", "#b38206", "#000000", "#94001e", "#9d6fa0", "#e55b00", "#5e85c9", "#adab9e", "#6ac291", "#006457"]`
         *              <dt>alpha</dt><dd>Number from 0 to 1 indicating the opacity of the marker border. The default value is 1.</dd>
         *              <dt>weight</dt><dd>Number indicating the width of the border. The default value is 1.</dd>
         *          </dl>
         *      </dd>
         *      <dt>height</dt><dd>indicates the width of the marker. The default value is 12.</dd>
         *      <dt>over</dt><dd>hash containing styles for markers when highlighted by a `mouseover` event. The default
         *      values for each style is null. When an over style is not set, the non-over value will be used. For example,
         *      the default value for `marker.over.fill.color` is equivalent to `marker.fill.color`.</dd>
         *  </dl>
         *
         * @attribute styles
         * @type Object
         */
    }
});

}, '3.17.2', {"requires": ["series-marker", "series-histogram-base"]});

${this.title}

Code Editor : series-bar.js