src/component/marker/MarkerModel.js

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define(function (require) {

    var modelUtil = require('../../util/model');
    var zrUtil = require('zrender/core/util');
    var env = require('zrender/core/env');

    var formatUtil = require('../../util/format');
    var addCommas = formatUtil.addCommas;
    var encodeHTML = formatUtil.encodeHTML;

    function fillLabel(opt) {
        modelUtil.defaultEmphasis(
            opt.label,
            modelUtil.LABEL_OPTIONS
        );
    }
    var MarkerModel = require('../../echarts').extendComponentModel({

        type: 'marker',

        dependencies: ['series', 'grid', 'polar', 'geo'],
        /**
         * @overrite
         */
        init: function (option, parentModel, ecModel, extraOpt) {

            if (__DEV__) {
                if (this.type === 'marker') {
                    throw new Error('Marker component is abstract component. Use markLine, markPoint, markArea instead.');
                }
            }
            this.mergeDefaultAndTheme(option, ecModel);
            this.mergeOption(option, ecModel, extraOpt.createdBySelf, true);
        },

        /**
         * @return {boolean}
         */
        ifEnableAnimation: function () {
            if (env.node) {
                return false;
            }

            var hostSeries = this.__hostSeries;
            return this.getShallow('animation') && hostSeries && hostSeries.ifEnableAnimation();
        },

        mergeOption: function (newOpt, ecModel, createdBySelf, isInit) {
            var MarkerModel = this.constructor;
            var modelPropName = this.mainType + 'Model';
            if (!createdBySelf) {
                ecModel.eachSeries(function (seriesModel) {

                    var markerOpt = seriesModel.get(this.mainType);

                    var markerModel = seriesModel[modelPropName];
                    if (!markerOpt || !markerOpt.data) {
                        seriesModel[modelPropName] = null;
                        return;
                    }