/**
 * @class Ext.chart.series.Bar
 * @extends Ext.chart.series.StackedCartesian
 * 
 * Creates a Bar or Column Chart (depending on the value of the
 * {@link Ext.chart.CartesianChart#flipXY flipXY} config).
 *
 * Note: 'bar' series is meant to be used with the
 * {@link Ext.chart.axis.Category 'category'} axis as its x-axis.
 * 
 *     @example
 *     Ext.create({
 *        xtype: 'cartesian', 
 *        renderTo: document.body,
 *        width: 600,
 *        height: 400,
 *        store: {
 *            fields: ['name', 'value'],
 *            data: [{
 *                name: 'metric one',
 *                value: 10
 *            }, {
 *                name: 'metric two',
 *                value: 7
 *            }, {
 *                name: 'metric three',
 *                value: 5
 *            }, {
 *                name: 'metric four',
 *                value: 2
 *            }, {
 *                name: 'metric five',
 *                value: 27
 *            }]
 *        },
 *        axes: [{
 *            type: 'numeric',
 *            position: 'left',
 *            title: {
 *                text: 'Sample Values',
 *                fontSize: 15
 *            },
 *            fields: 'value'
 *        }, {
 *            type: 'category',
 *            position: 'bottom',
 *            title: {
 *                text: 'Sample Values',
 *                fontSize: 15
 *            },
 *            fields: 'name'
 *        }],
 *        series: {
 *            type: 'bar',
 *            subStyle: {
 *                fill: ['#388FAD'],
 *                stroke: '#1F6D91'
 *            },
 *            xField: 'name',
 *            yField: 'value'
 *        }
 *     });
 */
Ext.define('Ext.chart.series.Bar', {

    extend: 'Ext.chart.series.StackedCartesian',

    alias: 'series.bar',
    type: 'bar',
    seriesType: 'barSeries',
    isBar: true,

    requires: [
        'Ext.chart.series.sprite.Bar',
        'Ext.draw.sprite.Rect'
    ],

    /**
     * @cfg {Object} style Custom style configuration for the sprite used in the series.
     * It overrides the style that is provided by the current theme. See
     * {@link Ext.chart.theme.series.Bar}
     */

    config: {
        /**
         * @private
         * @cfg {Object} itemInstancing Sprite template used for series.
         */
        itemInstancing: {
            type: 'rect',
            animation: {
                customDurations: {
                    x: 0,
                    y: 0,
                    width: 0,
                    height: 0,
                    radius: 0
                }
            }
        }
    },

    updateXAxis: function(xAxis) {
        //<debug>
        if (!this.is3D && !xAxis.isCategory) {
            Ext.raise("'bar' series should be used with a 'category' axis. " +
                      "Please refer to the bar series docs.");
        }
        //</debug>

        xAxis.setExpandRangeBy(0.5);
        this.callParent(arguments);
    },

    updateHidden: function(hidden) {
        this.callParent(arguments);
        this.updateStacked();
    },

    updateStacked: function(stacked) {
        var me = this,
            attributes = {},
            sprites = me.getSprites(),
            spriteCount = sprites.length,
            visibleSprites = [],
            visibleSpriteCount,
            i;

        for (i = 0; i < spriteCount; i++) {
            if (!sprites[i].attr.hidden) {
                visibleSprites.push(sprites[i]);
            }
        }

        visibleSpriteCount = visibleSprites.length;

        if (me.getStacked()) {
            attributes.groupCount = 1;
            attributes.groupOffset = 0;

            for (i = 0; i < visibleSpriteCount; i++) {
                visibleSprites[i].setAttributes(attributes);
            }
        }
        else {
            attributes.groupCount = visibleSpriteCount;

            for (i = 0; i < visibleSpriteCount; i++) {
                attributes.groupOffset = i;
                visibleSprites[i].setAttributes(attributes);
            }
        }

        me.callParent(arguments);
    }
});