react-native/Libraries/Network/XMLHttpRequest.ios.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
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*
* @providesModule XMLHttpRequest
* @flow
*/
'use strict';
var FormData = require('FormData');
var RCTNetworking = require('NativeModules').Networking;
var RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
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var XMLHttpRequestBase = require('XMLHttpRequestBase');
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class XMLHttpRequest extends XMLHttpRequestBase {
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_requestId: ?number;
_subscriptions: [any];
upload: {
onprogress?: (event: Object) => void;
};
constructor() {
super();
this._requestId = null;
this._subscriptions = [];
this.upload = {};
}
_didCreateRequest(requestId: number): void {
this._requestId = requestId;
this._subscriptions.push(RCTDeviceEventEmitter.addListener(
'didSendNetworkData',
(args) => this._didUploadProgress.call(this, args[0], args[1], args[2])
));
this._subscriptions.push(RCTDeviceEventEmitter.addListener(
'didReceiveNetworkResponse',
(args) => this._didReceiveResponse.call(this, args[0], args[1], args[2])
));
this._subscriptions.push(RCTDeviceEventEmitter.addListener(
'didReceiveNetworkData',
(args) => this._didReceiveData.call(this, args[0], args[1])
));
this._subscriptions.push(RCTDeviceEventEmitter.addListener(
'didCompleteNetworkResponse',
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(args) => this._didCompleteResponse.call(this, args[0], args[1])
));
}
_didUploadProgress(requestId: number, progress: number, total: number): void {
if (requestId === this._requestId && this.upload.onprogress) {
var event = {
lengthComputable: true,
loaded: progress,
total,
};
this.upload.onprogress(event);
}
}
_didReceiveResponse(requestId: number, status: number, responseHeaders: ?Object): void {
if (requestId === this._requestId) {
this.status = status;
this.setResponseHeaders(responseHeaders);
this.setReadyState(this.HEADERS_RECEIVED);
}
}
_didReceiveData(requestId: number, responseText: string): void {
if (requestId === this._requestId) {
if (!this.responseText) {
this.responseText = responseText;
} else {
this.responseText += responseText;
}
this.setReadyState(this.LOADING);
}
}
_didCompleteResponse(requestId: number, error: string): void {
if (requestId === this._requestId) {
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if (error) {
this.responseText = error;
}
this._clearSubscriptions();
this._requestId = null;
this.setReadyState(this.DONE);
}
}
_clearSubscriptions(): void {
for (var i = 0; i < this._subscriptions.length; i++) {
var sub = this._subscriptions[i];
sub.remove();
}
this._subscriptions = [];
}
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sendImpl(method: ?string, url: ?string, headers: Object, data: any): void {
if (typeof data === 'string') {
data = {string: data};
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} else if (data instanceof FormData) {
data = {formData: data.getParts()};
}
RCTNetworking.sendRequest(
{
method,
url,
data,
headers,
incrementalUpdates: this.onreadystatechange ? true : false,
},
this._didCreateRequest.bind(this)
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);
}
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abortImpl(): void {
if (this._requestId) {
RCTNetworking.cancelRequest(this._requestId);
this._clearSubscriptions();
this._requestId = null;
}
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}
}
module.exports = XMLHttpRequest;