so others may contribute

code/request_handling.js

@@ -0,0 +1,49 @@
+
+// REQUEST HANDLING //////////////////////////////////////////////////
+// note: only meant for portal/links/fields request, everything else
+// does not count towards “loading”
+
+window.activeRequests = [];
+window.failedRequestCount = 0;
+
+window.requests = function() {}
+
+window.requests.add = function(ajax) {
+  window.activeRequests.push(ajax);
+  renderUpdateStatus();
+}
+
+window.requests.remove = function(ajax) {
+  window.activeRequests.splice(window.activeRequests.indexOf(ajax), 1);
+  renderUpdateStatus();
+}
+
+window.requests.abort = function() {
+  $.each(window.activeRequests, function(ind, actReq) {
+    if(actReq) actReq.abort();
+  });
+  window.activeRequests = [];
+  window.failedRequestCount = 0;
+
+  startRefreshTimeout();
+  renderUpdateStatus();
+}
+
+// gives user feedback about pending operations. Draws current status
+// to website.
+window.renderUpdateStatus = function() {
+  var t = '<b>map status:</b> ';
+  if(mapRunsUserAction)
+    t += 'paused during interaction';
+  else if(isIdle())
+    t += 'Idle, not updating.';
+  else if(window.activeRequests.length > 0)
+    t += window.activeRequests.length + ' requests running';
+  else
+    t += 'Up to date.';
+
+  if(window.failedRequestCount > 0)
+    t += ' ' + window.failedRequestCount + ' requests  failed.'
+
+  $('#updatestatus').html(t);
+}