1 files changed, 98 insertions, 0 deletions
diff --git a/js/dav/lib/xmlhttprequest.js b/js/dav/lib/xmlhttprequest.js
new file mode 100644
index 00000000..d6c1c7cc
--- /dev/null
+++ b/js/dav/lib/xmlhttprequest.js
@@ -0,0 +1,98 @@
+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);
+  }
+}