added support for older documents without list cursors

Code24World · Jun 23, 2014 · d6a6587 · d6a6587
1 parent b01e9c0
commit d6a6587
Showing 1 changed file with 22 additions and 12 deletions.
diff --git a/js/rtpg.list.js b/js/rtpg.list.js
@@ -61,7 +61,9 @@ rtpg.list.INPUT_SELECTOR = '#demoListInput';
 rtpg.list.loadField = function() {
  rtpg.list.field = rtpg.getField(rtpg.list.FIELD_NAME);
  rtpg.list.cursors = rtpg.getField(rtpg.list.CURSORS_NAME);
- rtpg.list.garbageCollectCursorMap();
+ if(rtpg.list.cursors){
+ rtpg.list.garbageCollectCursorMap(); 
+ }
 };
 
 rtpg.list.garbageCollectCursorMap = function () {
@@ -107,9 +109,11 @@ rtpg.list.onListItemClick = function (evt) {
  // Register Reference
  if(!rtpg.list.field.registeredReference){
  rtpg.list.field.registeredReference = rtpg.list.field.registerReference(index, true);
- rtpg.list.cursors.set(rtpg.getMe().sessionId, rtpg.list.field.registeredReference);
  rtpg.list.field.registeredReference
  .addEventListener(gapi.drive.realtime.EventType.REFERENCE_SHIFTED, rtpg.list.onRealtimeReferenceShifted);
+ if(rtpg.list.cursors){
+ rtpg.list.cursors.set(rtpg.getMe().sessionId, rtpg.list.field.registeredReference);
+ }
  }
 
  rtpg.list.field.registeredReference.index = index;
@@ -120,9 +124,9 @@ rtpg.list.onListItemClick = function (evt) {
 };
 
 rtpg.list.updateListItems = function () {
- var keys = rtpg.list.cursors.keys(),
- me = rtpg.getMe(),
- listItems = $(rtpg.list.INPUT_SELECTOR + ' li');
+ var me = rtpg.getMe(),
+ listItems = $(rtpg.list.INPUT_SELECTOR + ' li'),
+ keys;
 
  listItems.removeClass('muted').removeAttr('style');
 
@@ -132,12 +136,15 @@ rtpg.list.updateListItems = function () {
  .addClass('active').css('background-color', me.color);
  }
 
- for(var i = 0, len = keys.length; i < len; i++){
- if(keys[i] != me.sessionId){
- var index = rtpg.list.cursors.get(keys[i]).index;
- var collaborator = rtpg.getCollaborator(keys[i]);
- $(listItems[index]).addClass('muted');
- $(listItems[index]).css('background-color', collaborator.color);
+ if(rtpg.list.cursors){
+ keys = rtpg.list.cursors.keys();
+ for(var i = 0, len = keys.length; i < len; i++){
+ if(keys[i] != me.sessionId){
+ var index = rtpg.list.cursors.get(keys[i]).index;
+ var collaborator = rtpg.getCollaborator(keys[i]);
+ $(listItems[index]).addClass('muted');
+ $(listItems[index]).css('background-color', collaborator.color);
+ }
  }
  }
 };
@@ -226,5 +233,8 @@ rtpg.list.connectRealtime = function() {
  rtpg.list.field.addEventListener(gapi.drive.realtime.EventType.VALUES_ADDED, rtpg.list.onRealtimeAdded);
  rtpg.list.field.addEventListener(gapi.drive.realtime.EventType.VALUES_REMOVED, rtpg.list.onRealtimeRemoved);
  rtpg.list.field.addEventListener(gapi.drive.realtime.EventType.VALUES_SET, rtpg.list.onRealtimeSet);
- rtpg.list.cursors.addEventListener(gapi.drive.realtime.EventType.VALUE_CHANGED, rtpg.list.onRealtimeCursorChange);
+
+ if(rtpg.list.cursors){
+ rtpg.list.cursors.addEventListener(gapi.drive.realtime.EventType.VALUE_CHANGED, rtpg.list.onRealtimeCursorChange);
+ }
 };