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let debug = require('./debug')('dav:xmlhttprequest');
let Native;
if (typeof self !== 'undefined' && 'XMLHttpRequest' in self) {
Native = self.XMLHttpRequest;
} else {
// Trick browserify into not loading XMLHttpRequest polyfill
// since it is available in the platform (including web workers)
Native = require(false || 'xmlhttprequest').XMLHttpRequest;
}
/**
* @fileoverview Promise wrapper around native xhr api.
*/
export default class XMLHttpRequest {
constructor(options) {
this.request = new Native(options);
this.sandbox = null;
/* readwrite */
[
'response',
'responseText',
'responseType',
'responseXML',
'timeout',
'upload',
'withCredentials'
].forEach(attribute => {
Object.defineProperty(this, attribute, {
get: function() { return this.request[attribute]; },
set: function(value) { this.request[attribute] = value; }
});
});
/* readonly */
[
'status',
'statusText'
].forEach(attribute => {
Object.defineProperty(this, attribute, {
get: function() { return this.request[attribute]; }
});
});
}
abort() {
return this._callNative('abort', arguments);
}
getAllResponseHeaders() {
return this._callNative('getAllResponseHeaders', arguments);
}
getResponseHeader() {
return this._callNative('getResponseHeader', arguments);
}
open() {
return this._callNative('open', arguments);
}
overrideMimeType() {
return this._callNative('overrideMimeType', arguments);
}
setRequestHeader() {
return this._callNative('setRequestHeader', arguments);
}
send(data) {
debug(`Sending request data: ${data}`);
if (this.sandbox) this.sandbox.add(this);
let request = this.request;
request.send(data);
return new Promise(function(resolve, reject) {
request.onreadystatechange = function() {
if (request.readyState !== 4 /* done */) {
return;
}
if (request.status < 200 || request.status >= 400) {
return reject(new Error(`Bad status: ${request.status}`));
}
return resolve(request.responseText);
};
request.ontimeout = function() {
reject(new Error(`Request timed out after ${request.timeout} ms`));
};
});
}
_callNative(method, args) {
return this.request[method].apply(this.request, args);
}
}
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