New export functionality.

public/js/export/index.js

@@ -0,0 +1,121 @@
+/* globals token, jobKey */
+
+/*
+ * index.js
+ * Copyright (C) 2016 Sander Dorigo
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+var intervalId = 0;
+
+$(function () {
+      "use strict";
+      // on click of export button:
+      // - hide form
+      // - post export command
+      // - start polling progress.
+      // - return false,
+
+      $('#export').submit(startExport);
+  }
+);
+
+function startExport() {
+    "use strict";
+    console.log('Start export...');
+    hideForm();
+    showLoading();
+
+    // do export
+    callExport();
+
+    return false;
+}
+
+
+function hideForm() {
+    "use strict";
+    $('#form-body').hide();
+    $('#do-export-button').hide();
+}
+
+function showForm() {
+    "use strict";
+    $('#form-body').show();
+    $('#do-export-button').show();
+}
+
+function showLoading() {
+    "use strict";
+    $('#export-loading').show();
+}
+
+function hideLoading() {
+    "use strict";
+    $('#export-loading').hide();
+}
+
+function showDownload() {
+    "use strict";
+    $('#export-download').show();
+}
+
+function showError(text) {
+    "use strict";
+    $('#export-error').show();
+    $('#export-error>p').text(text);
+}
+
+function callExport() {
+    "use strict";
+    console.log('Start callExport()...')
+    var data = $('#export').serialize();
+
+    // call status, keep calling it until response is "finished"?
+    intervalId = window.setInterval(checkStatus, 500);
+
+    $.post('export/submit', data).done(function (data) {
+        console.log('Export hath succeeded!');
+
+        // stop polling:
+        window.clearTimeout(intervalId);
+
+        // call it one last time:
+        window.setTimeout(checkStatus, 500);
+
+        // somewhere here is a download link.
+
+        // keep the loading thing, for debug.
+        hideLoading();
+
+        // show download
+        showDownload();
+
+    }).fail(function () {
+        // show error.
+        // show form again.
+        showError('The export failed. Please check the log files to find out why.');
+
+        // stop polling:
+        window.clearTimeout(intervalId);
+
+        hideLoading();
+        showForm();
+
+    });
+}
+
+function checkStatus() {
+    "use strict";
+    console.log('get status...');
+    $.getJSON('export/status/' + jobKey).done(function (data) {
+        putStatusText(data.status);
+    });
+}
+
+function putStatusText(status) {
+    "use strict";
+    $('#status-message').text(status);
+}