Present errors, namespace events.

js/id/connection.js

@@ -107,18 +107,17 @@ iD.Connection = function() {
                 path: '/api/0.6/changeset/create',
                 options: { header: { 'Content-Type': 'text/xml' } },
                 content: iD.format.XML.changeset(comment)
-            },
-            function (changeset_id) {
+            }, function (err, changeset_id) {
                 oauth.xhr({
                     method: 'POST',
                     path: '/api/0.6/changeset/' + changeset_id + '/upload',
                     options: { header: { 'Content-Type': 'text/xml' } },
                     content: iD.format.XML.osmChange(user.id, changeset_id, changes)
-                }, function () {
+                }, function (err) {
                     oauth.xhr({
                         method: 'PUT',
                         path: '/api/0.6/changeset/' + changeset_id + '/close'
-                    }, function () {
+                    }, function (err) {
                         callback(changeset_id);
                     });
                 });
@@ -126,7 +125,7 @@ iD.Connection = function() {
     }
 
     function userDetails(callback) {
-        oauth.xhr({ method: 'GET', path: '/api/0.6/user/details' }, function(user_details) {
+        oauth.xhr({ method: 'GET', path: '/api/0.6/user/details' }, function(err, user_details) {
             var u = user_details.getElementsByTagName('user')[0];
             callback(connection.user({
                 display_name: u.attributes.display_name.nodeValue,

js/id/oauth.js

@@ -49,9 +49,9 @@ iD.OAuth = function() {
         var oauth_token_secret = token('oauth_token_secret');
         o.oauth_signature = ohauth.signature(oauth_secret, oauth_token_secret,
             ohauth.baseString(options.method, url, o));
-        ohauth.xhr(options.method, url, o, options.content, options.options, function(xhr) {
-            if (xhr.responseXML) callback(xhr.responseXML);
-            else callback(xhr.response);
+        ohauth.xhr(options.method, url, o, options.content, options.options, function(err, xhr) {
+            if (xhr.responseXML) callback(err, xhr.responseXML);
+            else callback(err, xhr.response);
         });
     };
 

js/lib/d3.typeahead.js

@@ -13,7 +13,7 @@ d3.typeahead = function() {
                     top: rect.bottom + 'px'
                 });
             selection
-                .on('keyup.update', update);
+                .on('keyup.typeahead', update);
             hidden = false;
         }
 
@@ -26,8 +26,8 @@ d3.typeahead = function() {
         }
 
         selection
-            .on('focus', setup)
-            .on('blur', hide);
+            .on('focus.typeahead', setup)
+            .on('blur.typeahead', hide);
 
         var idx = 0;
         function update() {

js/lib/ohauth.js

@@ -19,9 +19,16 @@ ohauth.stringQs = function(str) {
 };
 
 ohauth.xhr = function(method, url, auth, data, options, callback) {
-    var xhr = new XMLHttpRequest();
+    var xhr = new XMLHttpRequest(),
+        twoHundred = /^20\d$/;
     xhr.onreadystatechange = function() {
-        if (4 == xhr.readyState && 0 !== xhr.status) callback(xhr);
+        if (4 == xhr.readyState && 0 !== xhr.status) {
+            if (twoHundred.test(xhr.status)) {
+                callback(null, xhr);
+            } else {
+                callback(xhr, null);
+            }
+        }
     };
     var headers = (options && options.header) || { 'Content-Type': 'application/x-www-form-urlencoded' };
     xhr.open(method, url, true);