echarts/lib/coord/axisModelCommonMixin.js

A powerful charting and visualization library for browser

    var zrUtil = require('zrender/lib/core/util');
    var axisHelper = require('./axisHelper');

    function getName(obj) {
        if (zrUtil.isObject(obj) && obj.value != null) {
            return obj.value;
        }
        else {
            return obj + '';
        }
    }

    module.exports = {

        /**
         * Format labels
         * @return {Array.<string>}
         */
        getFormattedLabels: function () {
            return axisHelper.getFormattedLabels(
                this.axis,
                this.get('axisLabel.formatter')
            );
        },

        /**
         * Get categories
         */
        getCategories: function () {
            return this.get('type') === 'category'
                && zrUtil.map(this.get('data'), getName);
        },

        /**
         * @param {boolean} origin
         * @return {number|string} min value or 'dataMin' or null/undefined (means auto) or NaN
         */
        getMin: function (origin) {
            var option = this.option;
            var min = (!origin && option.rangeStart != null)
                ? option.rangeStart : option.min;

            if (this.axis && min != null && min !== 'dataMin' && !zrUtil.eqNaN(min)) {
                min = this.axis.scale.parse(min);
            }
            return min;
        },

        /**
         * @param {boolean} origin
         * @return {number|string} max value or 'dataMax' or null/undefined (means auto) or NaN
         */
        getMax: function (origin) {
            var option = this.option;
            var max = (!origin && option.rangeEnd != null)
                ? option.rangeEnd : option.max;

            if (this.axis && max != null && max !== 'dataMax' && !zrUtil.eqNaN(max)) {
                max = this.axis.scale.parse(max);
            }
            return max;
        },

        /**
         * @return {boolean}
         */
        getNeedCrossZero: function () {
            var option = this.option;
            return (option.rangeStart != null || option.rangeEnd != null)
                ? false : !option.scale;
        },

        /**
         * Should be implemented by each axis model if necessary.
         * @return {module:echarts/model/Component} coordinate system model
         */
        getCoordSysModel: zrUtil.noop,

        /**
         * @param {number} rangeStart Can only be finite number or null/undefined or NaN.
         * @param {number} rangeEnd Can only be finite number or null/undefined or NaN.
         */
        setRange: function (rangeStart, rangeEnd) {
            this.option.rangeStart = rangeStart;
            this.option.rangeEnd = rangeEnd;
        },

        /**
         * Reset range
         */
        resetRange: function () {
            // rangeStart and rangeEnd is readonly.
            this.option.rangeStart = this.option.rangeEnd = null;
        }
    };