forked from qwerty/tupali
146 lines
3.8 KiB
JavaScript
146 lines
3.8 KiB
JavaScript
/* *
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*
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* (c) 2010-2017 Christer Vasseng, Torstein Honsi
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*
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* License: www.highcharts.com/license
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*
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* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
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*
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* */
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'use strict';
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import H from '../parts/Globals.js';
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import U from '../parts/Utilities.js';
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var merge = U.merge, objectEach = U.objectEach;
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/**
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* @interface Highcharts.AjaxSettingsObject
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*/ /**
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* The payload to send.
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*
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* @name Highcharts.AjaxSettingsObject#data
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* @type {string|Highcharts.Dictionary<any>}
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*/ /**
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* The data type expected.
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* @name Highcharts.AjaxSettingsObject#dataType
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* @type {"json"|"xml"|"text"|"octet"}
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*/ /**
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* Function to call on error.
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* @name Highcharts.AjaxSettingsObject#error
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* @type {Function}
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*/ /**
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* The headers; keyed on header name.
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* @name Highcharts.AjaxSettingsObject#headers
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* @type {Highcharts.Dictionary<string>}
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*/ /**
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* Function to call on success.
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* @name Highcharts.AjaxSettingsObject#success
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* @type {Function}
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*/ /**
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* The verb to use.
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* @name Highcharts.AjaxSettingsObject#type
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* @type {"GET"|"POST"|"UPDATE"|"DELETE"}
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*/ /**
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* The URL to call.
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* @name Highcharts.AjaxSettingsObject#url
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* @type {string}
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*/
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/**
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* Perform an Ajax call.
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*
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* @function Highcharts.ajax
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*
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* @param {Partial<Highcharts.AjaxSettingsObject>} attr
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* The Ajax settings to use.
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*
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* @return {false|undefined}
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* Returns false, if error occured.
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*/
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H.ajax = function (attr) {
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var options = merge(true, {
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url: false,
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type: 'get',
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dataType: 'json',
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success: false,
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error: false,
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data: false,
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headers: {}
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}, attr), headers = {
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json: 'application/json',
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xml: 'application/xml',
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text: 'text/plain',
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octet: 'application/octet-stream'
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}, r = new XMLHttpRequest();
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/**
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* @private
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* @param {XMLHttpRequest} xhr - Internal request object.
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* @param {string|Error} err - Occured error.
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* @return {void}
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*/
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function handleError(xhr, err) {
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if (options.error) {
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options.error(xhr, err);
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}
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else {
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// @todo Maybe emit a highcharts error event here
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}
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}
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if (!options.url) {
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return false;
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}
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r.open(options.type.toUpperCase(), options.url, true);
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if (!options.headers['Content-Type']) {
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r.setRequestHeader('Content-Type', headers[options.dataType] || headers.text);
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}
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objectEach(options.headers, function (val, key) {
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r.setRequestHeader(key, val);
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});
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// @todo lacking timeout handling
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r.onreadystatechange = function () {
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var res;
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if (r.readyState === 4) {
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if (r.status === 200) {
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res = r.responseText;
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if (options.dataType === 'json') {
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try {
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res = JSON.parse(res);
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}
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catch (e) {
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return handleError(r, e);
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}
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}
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return options.success && options.success(res);
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}
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handleError(r, r.responseText);
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}
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};
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try {
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options.data = JSON.stringify(options.data);
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}
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catch (e) {
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// empty
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}
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r.send(options.data || true);
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};
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/**
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* Get a JSON resource over XHR, also supporting CORS without preflight.
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*
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* @function Highcharts.getJSON
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* @param {string} url
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* The URL to load.
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* @param {Function} success
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* The success callback. For error handling, use the `Highcharts.ajax`
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* function instead.
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* @return {void}
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*/
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H.getJSON = function (url, success) {
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H.ajax({
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url: url,
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success: success,
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dataType: 'json',
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headers: {
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// Override the Content-Type to avoid preflight problems with CORS
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// in the Highcharts demos
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'Content-Type': 'text/plain'
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}
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});
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};
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