Defer nicklist loading until buffer is opened

Drastically improves startup time for users with buffers that have thousands of users

js/glowingbear.js

@@ -275,13 +275,6 @@ function($rootScope,
                 );
             };
 
-            var _requestNicklist = function() {
-                return ngWebsockets.send(
-                    weeChat.Protocol.formatNicklist({
-                    })
-                );
-            };
-
             var _requestBufferInfos = function() {
                 return ngWebsockets.send(
                     weeChat.Protocol.formatHdata({
@@ -322,10 +315,6 @@ function($rootScope,
                         handlers.handleHotlistInfo(hotlist);
                     });
 
-                    _requestNicklist().then(function(nicklist) {
-                        handlers.handleNicklist(nicklist);
-                    });
-
                     _requestSync();
                     $log.info("Connected to relay");
                     $rootScope.connected = true;
@@ -412,6 +401,22 @@ function($rootScope,
         }));
     };
 
+
+    var requestNicklist = function(bufferId, callback) {
+        bufferId = bufferId || null;
+        ngWebsockets.send(
+            weeChat.Protocol.formatNicklist({
+                buffer: bufferId
+            })
+        ).then(function(nicklist) {
+            handlers.handleNicklist(nicklist);
+            if (callback !== undefined) {
+                callback();
+            }
+        });
+    };
+
+
     var fetchMoreLines = function(numLines) {
         var buffer = models.getActiveBuffer();
         // Calculate number of lines to fetch, at least as many as the parameter
@@ -468,7 +473,8 @@ function($rootScope,
         disconnect: disconnect,
         sendMessage: sendMessage,
         sendCoreCommand: sendCoreCommand,
-        fetchMoreLines: fetchMoreLines
+        fetchMoreLines: fetchMoreLines,
+        requestNicklist: requestNicklist
     };
 }]);
 
@@ -641,15 +647,23 @@ weechat.controller('WeechatCtrl', ['$rootScope', '$scope', '$store', '$timeout',
     };
 
     $rootScope.$on('activeBufferChanged', function() {
-        $rootScope.scrollWithBuffer(true);
-
         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);
 
+        $rootScope.scrollWithBuffer(true);
+
         // If user wants to sync hotlist with weechat
         // we will send a /buffer bufferName command every time
         // the user switches a buffer. This will ensure that notifications