/**
 * @class Ext.draw.gradient.Gradient
 *
 * Creates a gradient.
 */
Ext.define('Ext.draw.gradient.Gradient', {

    requires: ['Ext.draw.Color'],

    isGradient: true,

    config: {
        /**
         * @cfg {Object[]} stops
         * Defines the stops of the gradient.
         */
        stops: []
    },

    applyStops: function(newStops) {
        var stops = [],
            ln = newStops.length,
            i, stop, color;

        for (i = 0; i < ln; i++) {
            stop = newStops[i];
            color = stop.color;

            if (!(color && color.isColor)) {
                color = Ext.util.Color.fly(color || Ext.util.Color.NONE);
            }

            stops.push({
                // eslint-disable-next-line max-len
                offset: Math.min(1, Math.max(0, 'offset' in stop ? stop.offset : stop.position || 0)),
                color: color.toString()
            });
        }

        stops.sort(function(a, b) {
            return a.offset - b.offset;
        });

        return stops;
    },

    onClassExtended: function(subClass, member) {
        if (!member.alias && member.type) {
            member.alias = 'gradient.' + member.type;
        }
    },

    constructor: function(config) {
        this.initConfig(config);
    },

    /**
     * @method
     * @protected
     * Generates the gradient for the given context.
     * @param {Ext.draw.engine.SvgContext} ctx The context.
     * @param {Object} bbox
     * @return {CanvasGradient/Ext.draw.engine.SvgContext.Gradient/Ext.util.Color.NONE}
     */
    generateGradient: Ext.emptyFn
});