Add binary support to ol.source.VectorFile

src/objectliterals.jsdoc

@@ -860,6 +860,7 @@
 
 /**
  * @typedef {Object} olx.source.VectorFileOptions
+ * @property {ArrayBuffer|undefined} arrayBuffer Array buffer.
  * @property {Array.<ol.Attribution>|undefined} attributions Attributions.
  * @property {Document|undefined} doc Document.
  * @property {ol.Extent|undefined} extent Extent.

src/ol/source/vectorfilesource.js

@@ -4,8 +4,13 @@
 goog.provide('ol.source.VectorFile');
 
 goog.require('goog.asserts');
+goog.require('goog.dispose');
+goog.require('goog.events');
+goog.require('goog.net.EventType');
 goog.require('goog.net.XhrIo');
+goog.require('goog.net.XhrIo.ResponseType');
 goog.require('goog.userAgent');
+goog.require('ol.BrowserFeature');
 goog.require('ol.format.FormatType');
 goog.require('ol.proj');
 goog.require('ol.source.State');
@@ -53,17 +58,38 @@ ol.source.VectorFile = function(opt_options) {
     this.readFeatures_(options.text);
   }
 
+  if (goog.isDef(options.arrayBuffer)) {
+    this.readFeatures_(options.arrayBuffer);
+  }
+
   if (goog.isDef(options.url) || goog.isDef(options.urls)) {
     this.setState(ol.source.State.LOADING);
-    var handleXhrIo = goog.bind(this.handleXhrIo_, this);
+
+    var type = this.format.getType();
+    var responseType;
+    if (type == ol.format.FormatType.BINARY &&
+        ol.BrowserFeature.HAS_ARRAY_BUFFER) {
+      responseType = goog.net.XhrIo.ResponseType.ARRAY_BUFFER;
+    } else {
+      responseType = goog.net.XhrIo.ResponseType.TEXT;
+    }
+    var xhrIo;
     if (goog.isDef(options.url)) {
-      goog.net.XhrIo.send(options.url, handleXhrIo);
+      xhrIo = new goog.net.XhrIo();
+      xhrIo.setResponseType(responseType);
+      goog.events.listen(xhrIo, goog.net.EventType.COMPLETE,
+          goog.bind(this.handleXhrIo_, this));
+      xhrIo.send(options.url);
     }
     if (goog.isDef(options.urls)) {
       var urls = options.urls;
       var i, ii;
       for (i = 0, ii = urls.length; i < ii; ++i) {
-        goog.net.XhrIo.send(urls[i], handleXhrIo);
+        xhrIo = new goog.net.XhrIo();
+        xhrIo.setResponseType(responseType);
+        goog.events.listen(xhrIo, goog.net.EventType.COMPLETE,
+            goog.bind(this.handleXhrIo_, this));
+        xhrIo.send(urls[i]);
       }
     }
   }
@@ -77,13 +103,16 @@ goog.inherits(ol.source.VectorFile, ol.source.Vector);
  * @private
  */
 ol.source.VectorFile.prototype.handleXhrIo_ = function(event) {
-  var xhrIo = /** @type {goog.net.XhrIo} */ (event.target);
+  var xhrIo = event.target;
+  goog.asserts.assertInstanceof(xhrIo, goog.net.XhrIo);
   if (xhrIo.isSuccess()) {
     var type = this.format.getType();
-    /** @type {Document|Node|Object|string|undefined} */
+    /** @type {ArrayBuffer|Document|Node|Object|string|undefined} */
     var source;
-    if (type == ol.format.FormatType.BINARY) {
-      // FIXME
+    if (type == ol.format.FormatType.BINARY &&
+        ol.BrowserFeature.HAS_ARRAY_BUFFER) {
+      source = xhrIo.getResponse();
+      goog.asserts.assertInstanceof(source, ArrayBuffer);
     } else if (type == ol.format.FormatType.JSON) {
       source = xhrIo.getResponseJson();
     } else if (type == ol.format.FormatType.TEXT) {
@@ -98,6 +127,7 @@ ol.source.VectorFile.prototype.handleXhrIo_ = function(event) {
     } else {
       goog.asserts.fail();
     }
+    goog.dispose(xhrIo);
     if (goog.isDef(source)) {
       this.readFeatures_(source);
     } else {
@@ -111,7 +141,7 @@ ol.source.VectorFile.prototype.handleXhrIo_ = function(event) {
 
 
 /**
- * @param {Document|Node|Object|string} source Source.
+ * @param {ArrayBuffer|Document|Node|Object|string} source Source.
  * @private
  */
 ol.source.VectorFile.prototype.readFeatures_ = function(source) {