Load lines before nicklist

Nicklist is not nearly as important as the actual lines, load them first for better perceived performance. Parsing the nicklist can take a noticeable amount of time for channels with thousands of occupants.

This also improves/fixes the nicklist emptiness check

js/glowingbear.js

@@ -649,19 +649,25 @@ weechat.controller('WeechatCtrl', ['$rootScope', '$scope', '$store', '$timeout',
     $rootScope.$on('activeBufferChanged', function() {
         var ab = models.getActiveBuffer();
 
-        if (ab.isNicklistEmpty()) {
-            var bufferId = '0x' + ab.id;  // WeeChat needs the 0x prefix
-            connection.requestNicklist(bufferId, function() {
-                $scope.showNicklist = $scope.updateShowNicklist();
-            });
-        }
-
         if (ab.requestedLines < $scope.lines) {
             // buffer has not been loaded, but some lines may already be present if they arrived after we connected
             $scope.fetchMoreLines($scope.lines);
         }
         $rootScope.updateTitle(ab);
 
+        // Send a request for the nicklist if it hasn't been loaded yet
+        if (!ab.nicklistRequested()) {
+            var bufferId = '0x' + ab.id;  // WeeChat needs the 0x prefix
+            connection.requestNicklist(bufferId, function() {
+                $scope.showNicklist = $scope.updateShowNicklist();
+                // Scroll after nicklist has been loaded, as it may break long lines
+                $rootScope.scrollWithBuffer(true);
+            });
+        } else {
+            // Check if we should show nicklist or not
+            $scope.showNicklist = $scope.updateShowNicklist();
+        }
+
         $rootScope.scrollWithBuffer(true);
 
         // If user wants to sync hotlist with weechat
@@ -675,9 +681,6 @@ weechat.controller('WeechatCtrl', ['$rootScope', '$scope', '$store', '$timeout',
         // Clear search term on buffer change
         $scope.search = '';
 
-        // Check if we should show nicklist or not
-        $scope.showNicklist = $scope.updateShowNicklist();
-
         if (!$rootScope.isMobileDevice()) {
             $('#sendMessage').focus();
         }

js/models.js

@@ -147,13 +147,25 @@ models.service('models', ['$rootScope', '$filter', function($rootScope, $filter)
             }
         };
 
+
+        // Check if the nicklist is empty, i.e., no nicks present
+        // This checks for the presence of people, not whether a
+        // request for the nicklist has been made
         var isNicklistEmpty = function() {
             for (var obj in nicklist) {
-                return false;
+                if (obj !== 'root') {
+                    return false;
+                }
             }
             return true;
         };
 
+        var nicklistRequested = function() {
+            // If the nicklist has been requested but is empty, it
+            // still has a 'root' property. Check for its existence.
+            return nicklist.hasOwnProperty('root');
+        };
+
         return {
             id: pointer,
             fullName: fullName,
@@ -179,7 +191,8 @@ models.service('models', ['$rootScope', '$filter', function($rootScope, $filter)
             addToHistory: addToHistory,
             getHistoryUp: getHistoryUp,
             getHistoryDown: getHistoryDown,
-            isNicklistEmpty: isNicklistEmpty
+            isNicklistEmpty: isNicklistEmpty,
+            nicklistRequested: nicklistRequested
         };
 
     };