'use strict';
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import utils from './../utils.js';
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class InterceptorManager {
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constructor() {
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this.handlers = [];
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}
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/**
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* Add a new interceptor to the stack
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*
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* @param {Function} fulfilled The function to handle `then` for a `Promise`
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* @param {Function} rejected The function to handle `reject` for a `Promise`
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*
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* @return {Number} An ID used to remove interceptor later
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*/
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use(fulfilled, rejected, options) {
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this.handlers.push({
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fulfilled,
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rejected,
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synchronous: options ? options.synchronous : false,
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runWhen: options ? options.runWhen : null
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});
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return this.handlers.length - 1;
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}
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/**
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* Remove an interceptor from the stack
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*
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* @param {Number} id The ID that was returned by `use`
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*
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* @returns {Boolean} `true` if the interceptor was removed, `false` otherwise
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*/
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eject(id) {
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if (this.handlers[id]) {
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this.handlers[id] = null;
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}
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}
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/**
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* Clear all interceptors from the stack
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*
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* @returns {void}
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*/
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clear() {
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if (this.handlers) {
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this.handlers = [];
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}
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}
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/**
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* Iterate over all the registered interceptors
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*
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* This method is particularly useful for skipping over any
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* interceptors that may have become `null` calling `eject`.
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*
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* @param {Function} fn The function to call for each interceptor
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*
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* @returns {void}
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*/
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forEach(fn) {
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utils.forEach(this.handlers, function forEachHandler(h) {
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if (h !== null) {
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fn(h);
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}
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});
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}
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}
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export default InterceptorManager;
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