1 files changed, 100 insertions, 0 deletions
diff --git a/webclient/components/matrix/matrix-filter.js b/webclient/components/matrix/matrix-filter.js
new file mode 100644
index 0000000000..a9bdbf66d9
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+++ b/webclient/components/matrix/matrix-filter.js
@@ -0,0 +1,100 @@
+/*
+ Copyright 2014 OpenMarket Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+'use strict';
+
+angular.module('matrixFilter', [])
+
+// Compute the room name according to information we have
+.filter('mRoomName', ['$rootScope', 'matrixService', function($rootScope, matrixService) {
+    return function(room_id) {
+        var roomName;
+
+        // If there is an alias, use it
+        // TODO: only one alias is managed for now
+        var alias = matrixService.getRoomIdToAliasMapping(room_id);
+        if (alias) {
+            roomName = alias;
+        }
+
+        if (undefined === roomName) {
+            // Else, build the name from its users
+            var room = $rootScope.events.rooms[room_id];
+            if (room) {
+                var room_name_event = room["m.room.name"];
+
+                if (room_name_event) {
+                    roomName = room_name_event.content.name;
+                }
+                else if (room.members) {
+                    // Limit the room renaming to 1:1 room
+                    if (2 === Object.keys(room.members).length) {
+                        for (var i in room.members) {
+                            var member = room.members[i];
+                            if (member.state_key !== matrixService.config().user_id) {
+
+                                if (member.state_key in $rootScope.presence) {
+                                    // If the user is available in presence, use the displayname there
+                                    // as it is the most uptodate
+                                    roomName = $rootScope.presence[member.state_key].content.displayname;
+                                }
+                                else if (member.content.displayname) {
+                                    roomName = member.content.displayname;
+                                }
+                                else {
+                                    roomName = member.state_key;
+                                }
+                            }
+                        }
+                    }
+                    else if (1 === Object.keys(room.members).length) {
+                        // The other member may be in the invite list, get all invited users
+                        var invitedUserIDs = [];
+                        for (var i in room.messages) {
+                            var message = room.messages[i];
+                            if ("m.room.member" === message.type && "invite" === message.membership) {
+                                // Make sure there is no duplicate user
+                                if (-1 === invitedUserIDs.indexOf(message.state_key)) {
+                                    invitedUserIDs.push(message.state_key);
+                                }
+                            } 
+                        }
+                        
+                        // For now, only 1:1 room needs to be renamed. It means only 1 invited user
+                        if (1 === invitedUserIDs.length) {
+                            var userID = invitedUserIDs[0];
+
+                            // Try to resolve his displayname in presence global data
+                            if (userID in $rootScope.presence) {
+                                roomName = $rootScope.presence[userID].content.displayname;
+                            }
+                            else {
+                                roomName = userID;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if (undefined === roomName) {
+            // By default, use the room ID
+            roomName = room_id;
+        }
+
+        return roomName;
+    };
+}]);