Function enableClassManagement

libs/echarts/echarts.simple.js:12323–12443

* @param {Object} entity * @param {Object} options * @param {boolean} [options.registerWhenExtend] * @public

(entity, options)

 * @public
 */
function enableClassManagement(entity, options) {
    options = options || {};

    /**
     * Component model classes
     * key: componentType,
     * value:
     *     componentClass, when componentType is 'xxx'
     *     or Object.<subKey, componentClass>, when componentType is 'xxx.yy'
     * @type {Object}
     */
    var storage = {};

    entity.registerClass = function (Clazz, componentType) {
        if (componentType) {
            checkClassType(componentType);
            componentType = parseClassType$1(componentType);

            if (!componentType.sub) {
                if (__DEV__) {
                    if (storage[componentType.main]) {
                        console.warn(componentType.main + ' exists.');
                    }
                }
                storage[componentType.main] = Clazz;
            }
            else if (componentType.sub !== IS_CONTAINER) {
                var container = makeContainer(componentType);
                container[componentType.sub] = Clazz;
            }
        }
        return Clazz;
    };

    entity.getClass = function (componentMainType, subType, throwWhenNotFound) {
        var Clazz = storage[componentMainType];

        if (Clazz && Clazz[IS_CONTAINER]) {
            Clazz = subType ? Clazz[subType] : null;
        }

        if (throwWhenNotFound && !Clazz) {
            throw new Error(
                !subType
                    ? componentMainType + '.' + 'type should be specified.'
                    : 'Component ' + componentMainType + '.' + (subType || '') + ' not exists. Load it first.'
            );
        }

        return Clazz;
    };

    entity.getClassesByMainType = function (componentType) {
        componentType = parseClassType$1(componentType);

        var result = [];
        var obj = storage[componentType.main];