X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/878b0ff6d405dfcd4f3277ff7d9382af29db6c32..b8dccb1fa84d699e1220e1a3d57b13085349b5ce:/apps/workbench/app/assets/javascripts/tab_panes.js

diff --git a/apps/workbench/app/assets/javascripts/tab_panes.js b/apps/workbench/app/assets/javascripts/tab_panes.js
index c67772db4c..b19a277ef7 100644
--- a/apps/workbench/app/assets/javascripts/tab_panes.js
+++ b/apps/workbench/app/assets/javascripts/tab_panes.js
@@ -1,3 +1,7 @@
+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
 // Load tab panes on demand. See app/views/application/_content.html.erb
 
 // Fire when a tab is selected/clicked.
@@ -133,7 +137,23 @@ $(document).on('arv:pane:reload', '[data-pane-content-url]', function(e) {
             var $pane = this;
             var errhtml;
             var contentType = jqxhr.getResponseHeader('Content-Type');
-            if (contentType && contentType.match(/\btext\/html\b/)) {
+            if (jqxhr.readyState == 0 || jqxhr.status == 0) {
+                if ($pane.attr('data-loaded-at') > 0) {
+                    // Stale content is already present. Leave it
+                    // there while loading the next page.
+                    $pane.removeClass('pane-loading');
+                    $pane.addClass('pane-loaded');
+                    // ...but schedule another refresh (after a
+                    // throttle delay) in case the act of navigating
+                    // away gets cancelled itself, leaving this page
+                    // with content that we know is stale.
+                    $pane.addClass('pane-stale');
+                    $pane.attr('data-loaded-at', (new Date()).getTime());
+                    $pane.trigger('arv:pane:reload');
+                    return;
+                }
+                errhtml = "Cancelled.";
+            } else if (contentType && contentType.match(/\btext\/html\b/)) {
                 var $response = $(jqxhr.responseText);
                 var $wrapper = $('div#page-wrapper', $response);
                 if ($wrapper.length) {
@@ -148,7 +168,7 @@ $(document).on('arv:pane:reload', '[data-pane-content-url]', function(e) {
                     replace(/</g, '&lt;').
                     replace(/>/g, '&gt;');
             }
-            $pane.html('<div><p>' +
+            $pane.html('<div class="pane-error-display"><p>' +
                       '<a href="#" class="btn btn-primary tab_reload">' +
                       '<i class="fa fa-fw fa-refresh"></i> ' +
                       'Reload tab</a></p><iframe style="width: 100%"></iframe></div>');