Merge branch 'develop' of github.com:matrix-org/synapse into federation_authorization

1 files changed, 1094 insertions, 0 deletions

diff --git a/syweb/webclient/room/room-controller.js b/syweb/webclient/room/room-controller.js
new file mode 100644
index 0000000000..d3fb85b9dc
--- /dev/null
+++ b/syweb/webclient/room/room-controller.js
@@ -0,0 +1,1094 @@
+/*
+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.
+*/
+
+angular.module('RoomController', ['ngSanitize', 'matrixFilter', 'mFileInput'])
+.controller('RoomController', ['$modal', '$filter', '$scope', '$timeout', '$routeParams', '$location', '$rootScope', 'matrixService', 'mPresence', 'eventHandlerService', 'mFileUpload', 'matrixPhoneService', 'MatrixCall', 'notificationService', 'modelService',
+                               function($modal, $filter, $scope, $timeout, $routeParams, $location, $rootScope, matrixService, mPresence, eventHandlerService, mFileUpload, matrixPhoneService, MatrixCall, notificationService, modelService) {
+   'use strict';
+    var MESSAGES_PER_PAGINATION = 30;
+    var THUMBNAIL_SIZE = 320;
+    
+    // .html needs this
+    $scope.containsBingWord = function(content) {
+        return notificationService.containsBingWord(
+            matrixService.config().user_id,
+            matrixService.config().display_name,
+            matrixService.config().bingWords,
+            content
+        );
+    };
+
+    // Room ids. Computed and resolved in onInit
+    $scope.room_id = undefined;
+    $scope.room_alias = undefined;
+
+    $scope.state = {
+        user_id: matrixService.config().user_id,
+        permission_denied: undefined, // If defined, this string contains the reason why the user cannot join the room
+        first_pagination: true, // this is toggled off when the first pagination is done
+        can_paginate: false, // this is toggled off when we are not ready yet to paginate or when we run out of items
+        paginating: false, // used to avoid concurrent pagination requests pulling in dup contents
+        stream_failure: undefined, // the response when the stream fails
+        waiting_for_joined_event: false,  // true when the join request is pending. Back to false once the corresponding m.room.member event is received
+        messages_visibility: "hidden", // In order to avoid flickering when scrolling down the message table at the page opening, delay the message table display
+    };
+    $scope.members = {};
+    $scope.autoCompleting = false;
+    $scope.autoCompleteIndex = 0;    
+    $scope.autoCompleteOriginal = "";
+
+    $scope.imageURLToSend = "";
+    $scope.userIDToInvite = "";
+    
+
+    // vars and functions for updating the name
+    $scope.name = {
+        isEditing: false,
+        newNameText: "",
+        editName: function() {
+            if ($scope.name.isEditing) {
+                console.log("Warning: Already editing name.");
+                return;
+            };
+
+            var nameEvent = $scope.room.current_room_state.state_events['m.room.name'];
+            if (nameEvent) {
+                $scope.name.newNameText = nameEvent.content.name;
+            }
+            else {
+                $scope.name.newNameText = "";
+            }
+
+            // Force focus to the input
+            $timeout(function() {
+                angular.element('.roomNameInput').focus(); 
+            }, 0);
+
+            $scope.name.isEditing = true;
+        },
+        updateName: function() {
+            console.log("Updating name to "+$scope.name.newNameText);
+            matrixService.setName($scope.room_id, $scope.name.newNameText).then(
+                function() {
+                },
+                function(error) {
+                    $scope.feedback = "Request failed: " + error.data.error;
+                }
+            );
+
+            $scope.name.isEditing = false;
+        },
+        cancelEdit: function() {
+            $scope.name.isEditing = false;
+        }
+    };
+
+    // vars and functions for updating the topic
+    $scope.topic = {
+        isEditing: false,
+        newTopicText: "",
+        editTopic: function() {
+            if ($scope.topic.isEditing) {
+                console.log("Warning: Already editing topic.");
+                return;
+            }
+            var topicEvent = $scope.room.current_room_state.state_events['m.room.topic'];
+            if (topicEvent) {
+                $scope.topic.newTopicText = topicEvent.content.topic;
+            }
+            else {
+                $scope.topic.newTopicText = "";
+            }
+            
+            // Force focus to the input
+            $timeout(function() {
+                angular.element('.roomTopicInput').focus(); 
+            }, 0);
+            
+            $scope.topic.isEditing = true;
+        },
+        updateTopic: function() {
+            console.log("Updating topic to "+$scope.topic.newTopicText);
+            matrixService.setTopic($scope.room_id, $scope.topic.newTopicText).then(
+                function() {
+                },
+                function(error) {
+                    $scope.feedback = "Request failed: " + error.data.error;
+                }
+            );
+
+            $scope.topic.isEditing = false;
+        },
+        cancelEdit: function() {
+            $scope.topic.isEditing = false;
+        }
+    };  
+    
+    var scrollToBottom = function(force) {
+        console.log("Scrolling to bottom");
+        
+        // Do not autoscroll to the bottom to display the new event if the user is not at the bottom.
+        // Exception: in case where the event is from the user, we want to force scroll to the bottom
+        var objDiv = document.getElementById("messageTableWrapper");
+        // add a 10px buffer to this check so if the message list is not *quite*
+        // at the bottom it still scrolls since it basically is at the bottom.
+        if ((10 + objDiv.offsetHeight + objDiv.scrollTop >= objDiv.scrollHeight) || force) {
+            
+            $timeout(function() {
+                objDiv.scrollTop = objDiv.scrollHeight;
+
+                // Show the message table once the first scrolldown is done 
+                if ("visible" !== $scope.state.messages_visibility) {
+                    $timeout(function() {
+                        $scope.state.messages_visibility = "visible";
+                    }, 0);
+                }
+            }, 0);
+        }
+    };
+
+    $scope.$on(eventHandlerService.MSG_EVENT, function(ngEvent, event, isLive) {
+        if (isLive && event.room_id === $scope.room_id) {
+            
+            scrollToBottom();
+        }
+    });
+    
+    $scope.$on(eventHandlerService.MEMBER_EVENT, function(ngEvent, event, isLive) {
+        if (isLive && event.room_id === $scope.room_id) {
+            if ($scope.state.waiting_for_joined_event) {
+                // The user has successfully joined the room, we can getting data for this room
+                $scope.state.waiting_for_joined_event = false;
+                onInit3();
+            }
+            else if (event.state_key === $scope.state.user_id && "invite" !== event.membership && "join" !== event.membership) {
+                var user;
+                        
+                if ($scope.members[event.user_id]) {
+                    user = $scope.members[event.user_id].displayname;
+                }
+                if (user) {
+                    user = user + " (" + event.user_id + ")";
+                }
+                else {
+                    user = event.user_id;
+                }
+                 
+                if ("ban" === event.membership) {
+                    $scope.state.permission_denied = "You have been banned by " + user;
+                }
+                else {
+                    $scope.state.permission_denied = "You have been kicked by " + user;
+                }  
+            }
+            else {
+                scrollToBottom();
+                updateMemberList(event); 
+
+                // Notify when a user joins
+                if ((document.hidden  || matrixService.presence.unavailable === mPresence.getState())
+                        && event.state_key !== $scope.state.user_id  && "join" === event.membership) {
+                    var userName = event.content.displayname;
+                    if (!userName) {
+                        userName = event.state_key;
+                    }
+                    notificationService.showNotification(
+                        userName +
+                        " (" + $filter("mRoomName")(event.room_id) + ")",
+                        userName + " joined",
+                        event.content.avatar_url ? event.content.avatar_url : undefined,
+                        function() {
+                            console.log("notification.onclick() room=" + event.room_id);
+                            $rootScope.goToPage('room/' + event.room_id); 
+                        }
+                    );
+                }
+            }
+        }
+    });
+    
+    $scope.$on(eventHandlerService.PRESENCE_EVENT, function(ngEvent, event, isLive) {
+        if (isLive) {
+            updatePresence(event);
+        }
+    });
+    
+    $scope.$on(eventHandlerService.POWERLEVEL_EVENT, function(ngEvent, event, isLive) {
+        if (isLive && event.room_id === $scope.room_id) {
+            for (var user_id in event.content) {
+                updateUserPowerLevel(user_id);
+            }
+        }
+    });
+
+    $scope.memberCount = function() {
+        return Object.keys($scope.members).length;
+    };
+    
+    $scope.paginateMore = function() {
+        if ($scope.state.can_paginate) {
+            // console.log("Paginating more.");
+            paginate(MESSAGES_PER_PAGINATION);
+        }
+    };
+
+    var paginate = function(numItems) {
+        //console.log("paginate " + numItems + " and first_pagination is " + $scope.state.first_pagination);
+        if ($scope.state.paginating || !$scope.room_id) {
+            return;
+        }
+        else {
+            $scope.state.paginating = true;
+        }
+        
+        console.log("paginateBackMessages from " + $scope.room.old_room_state.pagination_token + " for " + numItems);
+        var originalTopRow = $("#messageTable>tbody>tr:first")[0];
+        
+        // Paginate events from the point in cache
+        matrixService.paginateBackMessages($scope.room_id, $scope.room.old_room_state.pagination_token, numItems).then(
+            function(response) {
+
+                eventHandlerService.handleRoomMessages($scope.room_id, response.data, false, 'b');
+                if (response.data.chunk.length < MESSAGES_PER_PAGINATION) {
+                    // no more messages to paginate. this currently never gets turned true again, as we never
+                    // expire paginated contents in the current implementation.
+                    $scope.state.can_paginate = false;
+                }
+                
+                $scope.state.paginating = false;
+                
+                var wrapper = $("#messageTableWrapper")[0];
+                var table = $("#messageTable")[0];
+                // console.log("wrapper height=" + wrapper.clientHeight + ", table scrollHeight=" + table.scrollHeight);
+                
+                if ($scope.state.can_paginate) {
+                    // check we don't have to pull in more messages
+                    // n.b. we dispatch through a timeout() to allow the digest to run otherwise the .height methods are stale
+                    $timeout(function() {
+                        if (table.scrollHeight < wrapper.clientHeight) {
+                            paginate(MESSAGES_PER_PAGINATION);
+                            scrollToBottom();                            
+                        }
+                    }, 0);
+                }
+                
+                if ($scope.state.first_pagination) {
+                    scrollToBottom(true);
+                    $scope.state.first_pagination = false;
+                }
+                else {
+                    // lock the scroll position
+                    $timeout(function() {
+                        // FIXME: this risks a flicker before the scrollTop is actually updated, but we have to
+                        // dispatch it into a function in order to first update the layout.  The right solution
+                        // might be to implement it as a directive, more like
+                        // http://stackoverflow.com/questions/23736647/how-to-retain-scroll-position-of-ng-repeat-in-angularjs
+                        // however, this specific solution breaks because it measures the rows height before
+                        // the contents are interpolated.
+                        wrapper.scrollTop = originalTopRow ? (originalTopRow.offsetTop + wrapper.scrollTop) : 0;
+                    }, 0);
+                }
+            },
+            function(error) {
+                console.log("Failed to paginateBackMessages: " + JSON.stringify(error));
+                $scope.state.paginating = false;
+            }
+        );
+    };
+
+    var updateMemberList = function(chunk) {
+        if (chunk.room_id != $scope.room_id) return;
+
+
+        // set target_user_id to keep things clear
+        var target_user_id = chunk.state_key;
+
+        var isNewMember = !(target_user_id in $scope.members);
+        if (isNewMember) {
+            
+            // Ignore banned and kicked (leave) people
+            if ("ban" === chunk.membership || "leave" === chunk.membership) {
+                return;
+            }
+        
+            // FIXME: why are we copying these fields around inside chunk?
+            if ("presence" in chunk.content) {
+                chunk.presence = chunk.content.presence;
+            }
+            if ("last_active_ago" in chunk.content) {
+                chunk.last_active_ago = chunk.content.last_active_ago;
+                $scope.now = new Date().getTime();
+                chunk.last_updated = $scope.now;
+            }
+            if ("displayname" in chunk.content) {
+                chunk.displayname = chunk.content.displayname;
+            }
+            if ("avatar_url" in chunk.content) {
+                chunk.avatar_url = chunk.content.avatar_url;
+            }
+            $scope.members[target_user_id] = chunk;   
+
+            if (target_user_id in $rootScope.presence) {
+                updatePresence($rootScope.presence[target_user_id]);
+            }
+        }
+        else {
+            // selectively update membership and presence else it will nuke the picture and displayname too :/
+            
+            // Remove banned and kicked (leave) people
+            if ("ban" === chunk.membership || "leave" === chunk.membership) {
+                delete $scope.members[target_user_id];
+                return;
+            }
+            
+            var member = $scope.members[target_user_id];
+            member.membership = chunk.content.membership;
+            if ("presence" in chunk.content) {
+                member.presence = chunk.content.presence;
+            }
+            if ("last_active_ago" in chunk.content) {
+                member.last_active_ago = chunk.content.last_active_ago;
+                $scope.now = new Date().getTime();
+                member.last_updated = $scope.now;
+            }
+        }
+    };
+    
+    var updateMemberListPresenceAge = function() {
+        $scope.now = new Date().getTime();
+        // TODO: don't bother polling every 5s if we know none of our counters are younger than 1 minute
+        $timeout(updateMemberListPresenceAge, 5 * 1000);
+    };
+
+    var updatePresence = function(chunk) {
+        if (!(chunk.content.user_id in $scope.members)) {
+            console.log("updatePresence: Unknown member for chunk " + JSON.stringify(chunk));
+            return;
+        }
+        var member = $scope.members[chunk.content.user_id];
+
+        // XXX: why not just pass the chunk straight through?
+        if ("presence" in chunk.content) {
+            member.presence = chunk.content.presence;
+        }
+
+        if ("last_active_ago" in chunk.content) {
+            member.last_active_ago = chunk.content.last_active_ago;
+            $scope.now = new Date().getTime();
+            member.last_updated = $scope.now;
+        }
+
+        // this may also contain a new display name or avatar url, so check.
+        if ("displayname" in chunk.content) {
+            member.displayname = chunk.content.displayname;
+        }
+
+        if ("avatar_url" in chunk.content) {
+            member.avatar_url = chunk.content.avatar_url;
+        }
+    };
+
+    var updateUserPowerLevel = function(user_id) {
+        var member = $scope.members[user_id];
+        if (member) {
+            member.powerLevel = eventHandlerService.getUserPowerLevel($scope.room_id, user_id);
+            
+            normaliseMembersPowerLevels();
+        }
+    };
+
+    // Normalise users power levels so that the user with the higher power level
+    // will have a bar covering 100% of the width of his avatar
+    var normaliseMembersPowerLevels = function() {
+        // Find the max power level
+        var maxPowerLevel = 0;
+        for (var i in $scope.members) {
+            if (!$scope.members.hasOwnProperty(i)) continue;
+
+            var member = $scope.members[i];
+            if (member.powerLevel) {
+                maxPowerLevel = Math.max(maxPowerLevel, member.powerLevel);
+            }
+        }
+
+        // Normalized them on a 0..100% scale to be use in css width
+        if (maxPowerLevel) {
+            for (var i in $scope.members) {
+                if (!$scope.members.hasOwnProperty(i)) continue;
+
+                var member = $scope.members[i];
+                member.powerLevelNorm = (member.powerLevel * 100) / maxPowerLevel;
+            }
+        }
+    };
+
+    $scope.send = function() {
+        var input = $('#mainInput').val();
+        
+        if (undefined === input || input === "") {
+            return;
+        }
+        
+        scrollToBottom(true);
+
+        // Store the command in the history
+        history.push(input);
+
+        var promise;
+        var cmd;
+        var args;
+        var echo = false;
+        
+        // Check for IRC style commands first
+        // trim any trailing whitespace, as it can confuse the parser for IRC-style commands
+        input = input.replace(/\s+$/, "");
+        
+        if (input[0] === "/" && input[1] !== "/") {
+            var bits = input.match(/^(\S+?)( +(.*))?$/);
+            cmd = bits[1];
+            args = bits[3];
+            
+            console.log("cmd: " + cmd + ", args: " + args);
+            
+            switch (cmd) {
+                case "/me":
+                    promise = matrixService.sendEmoteMessage($scope.room_id, args);
+                    echo = true;
+                    break;
+                    
+                case "/nick":
+                    // Change user display name
+                    if (args) {
+                        promise = matrixService.setDisplayName(args);                     
+                    }
+                    else {
+                        $scope.feedback = "Usage: /nick <display_name>";
+                    }
+                    break;
+
+                case "/join":
+                    // Join a room
+                    if (args) {
+                        var matches = args.match(/^(\S+)$/);
+                        if (matches) {
+                            var room_alias = matches[1];
+                            if (room_alias.indexOf(':') == -1) {
+                                // FIXME: actually track the :domain style name of our homeserver
+                                // with or without port as is appropriate and append it at this point
+                            }
+                            
+                            var room_id = matrixService.getAliasToRoomIdMapping(room_alias);
+                            console.log("joining " + room_alias + " id=" + room_id);
+                            if ($scope.room) { // TODO actually check that you = join
+                                // don't send a join event for a room you're already in.
+                                $location.url("room/" + room_alias);
+                            }
+                            else {
+                                promise = matrixService.joinAlias(room_alias).then(
+                                    function(response) {
+                                        // TODO: factor out the common housekeeping whenever we try to join a room or alias
+                                        matrixService.roomState(response.room_id).then(
+                                            function(response) {
+                                                eventHandlerService.handleEvents(response.data, false, true);
+                                            },
+                                            function(error) {
+                                                $scope.feedback = "Failed to get room state for: " + response.room_id;
+                                            }
+                                        );                                        
+                                        $location.url("room/" + room_alias);
+                                    },
+                                    function(error) {
+                                        $scope.feedback = "Can't join room: " + JSON.stringify(error.data);
+                                    }
+                                );
+                            }
+                        }
+                    }
+                    else {
+                        $scope.feedback = "Usage: /join <room_alias>";
+                    }
+                    break;
+                    
+                case "/kick":
+                    // Kick a user from the room with an optional reason
+                    if (args) {
+                        var matches = args.match(/^(\S+?)( +(.*))?$/);
+                        if (matches) {
+                            promise = matrixService.kick($scope.room_id, matches[1], matches[3]);
+                        }
+                    }
+
+                    if (!promise) {
+                        $scope.feedback = "Usage: /kick <userId> [<reason>]";
+                    }
+                    break;
+
+                case "/ban":
+                    // Ban a user from the room with an optional reason
+                    if (args) {
+                        var matches = args.match(/^(\S+?)( +(.*))?$/);
+                        if (matches) {
+                            promise = matrixService.ban($scope.room_id, matches[1], matches[3]);
+                        }
+                    }
+                    
+                    if (!promise) {
+                        $scope.feedback = "Usage: /ban <userId> [<reason>]";
+                    }
+                    break;
+
+                case "/unban":
+                    // Unban a user from the room
+                    if (args) {
+                        var matches = args.match(/^(\S+)$/);
+                        if (matches) {
+                            // Reset the user membership to "leave" to unban him
+                            promise = matrixService.unban($scope.room_id, matches[1]);
+                        }
+                    }
+                    
+                    if (!promise) {
+                        $scope.feedback = "Usage: /unban <userId>";
+                    }
+                    break;
+                    
+                case "/op":
+                    // Define the power level of a user
+                    if (args) {
+                        var matches = args.match(/^(\S+?)( +(\d+))?$/);
+                        var powerLevel = 50; // default power level for op
+                        if (matches) {
+                            var user_id = matches[1];
+                            if (matches.length === 4 && undefined !== matches[3]) {
+                                powerLevel = parseInt(matches[3]);
+                            }
+                            if (powerLevel !== NaN) {
+                                var powerLevelEvent = $scope.room.current_room_state.state("m.room.power_levels");
+                                promise = matrixService.setUserPowerLevel($scope.room_id, user_id, powerLevel, powerLevelEvent);
+                            }
+                        }
+                    }
+                    
+                    if (!promise) {
+                        $scope.feedback = "Usage: /op <userId> [<power level>]";
+                    }
+                    break;
+                    
+                case "/deop":
+                    // Reset the power level of a user
+                    if (args) {
+                        var matches = args.match(/^(\S+)$/);
+                        if (matches) {
+                            var powerLevelEvent = $scope.room.current_room_state.state("m.room.power_levels");
+                            promise = matrixService.setUserPowerLevel($scope.room_id, args, undefined, powerLevelEvent);
+                        }
+                    }
+                    
+                    if (!promise) {
+                        $scope.feedback = "Usage: /deop <userId>";
+                    }
+                    break;
+                
+                default:
+                    $scope.feedback = ("Unrecognised IRC-style command: " + cmd);
+                    break;
+            }
+        }
+        
+        // By default send this as a message unless it's an IRC-style command
+        if (!promise && !cmd) {
+            // Make the request
+            promise = matrixService.sendTextMessage($scope.room_id, input);
+            echo = true;
+        }
+        
+        if (echo) {
+            // Echo the message to the room
+            // To do so, create a minimalist fake text message event and add it to the in-memory list of room messages
+            var echoMessage = {
+                content: {
+                    body: (cmd === "/me" ? args : input),
+                    msgtype: (cmd === "/me" ? "m.emote" : "m.text"),
+                },
+                origin_server_ts: new Date().getTime(), // fake a timestamp
+                room_id: $scope.room_id,
+                type: "m.room.message",
+                user_id: $scope.state.user_id,
+                echo_msg_state: "messagePending"     // Add custom field to indicate the state of this fake message to HTML
+            };
+
+            $('#mainInput').val('');
+            $scope.room.addMessageEvent(echoMessage);
+            scrollToBottom();
+        }
+
+        if (promise) {
+            // Reset previous feedback
+            $scope.feedback = "";
+
+            promise.then(
+                function(response) {
+                    console.log("Request successfully sent");
+
+                    if (echo) {
+                        // Mark this fake message event with its allocated event_id
+                        // When the true message event will come from the events stream (in handleMessage),
+                        // we will be able to replace the fake one by the true one
+                        echoMessage.event_id = response.data.event_id;
+                    }
+                    else {
+                        $('#mainInput').val('');
+                    }         
+                },
+                function(error) {
+                    $scope.feedback = "Request failed: " + error.data.error;
+
+                    if (echoMessage) {
+                        // Mark the message as unsent for the rest of the page life
+                        echoMessage.origin_server_ts = "Unsent";
+                        echoMessage.echo_msg_state = "messageUnSent";
+                    }
+                });
+        }
+    };
+
+    $scope.onInit = function() {
+        console.log("onInit");
+
+        // Does the room ID provided in the URL?
+        var room_id_or_alias;
+        if ($routeParams.room_id_or_alias) {
+            room_id_or_alias = decodeURIComponent($routeParams.room_id_or_alias);
+        }
+
+        if (room_id_or_alias && '!' === room_id_or_alias[0]) {
+            // Yes. We can go on right now
+            $scope.room_id = room_id_or_alias;
+            $scope.room_alias = matrixService.getRoomIdToAliasMapping($scope.room_id);
+            onInit2();
+        }
+        else {
+            // No. The URL contains the room alias. Get this alias.
+            if (room_id_or_alias) {
+                // The room alias was passed urlencoded, use it as is
+                $scope.room_alias = room_id_or_alias;
+            }
+            else  {
+                // Else get the room alias by hand from the URL
+                // ie: extract #public:localhost:8080 from http://127.0.0.1:8000/#/room/#public:localhost:8080
+                if (3 === location.hash.split("#").length) {
+                    $scope.room_alias = "#" + location.hash.split("#")[2];
+                }
+                else {
+                    // In case of issue, go to the default page
+                    console.log("Error: cannot extract room alias");
+                    $location.url("/");
+                    return;
+                }
+            }
+            
+            // Need a room ID required in Matrix API requests
+            console.log("Resolving alias: " + $scope.room_alias);
+            matrixService.resolveRoomAlias($scope.room_alias).then(function(response) {
+                $scope.room_id = response.data.room_id;
+                console.log("   -> Room ID: " + $scope.room_id);
+
+                // Now, we can go on
+                onInit2();
+            },
+            function () {
+                // In case of issue, go to the default page
+                console.log("Error: cannot resolve room alias");
+                $location.url("/");
+            });
+        }
+    };
+    
+    var onInit2 = function() {
+        console.log("onInit2");
+        // =============================
+        $scope.room = modelService.getRoom($scope.room_id);
+        // =============================
+        
+        // Scroll down as soon as possible so that we point to the last message
+        // if it already exists in memory
+        scrollToBottom(true);
+
+        // Make sure the initialSync has been before going further
+        eventHandlerService.waitForInitialSyncCompletion().then(
+            function() {
+                
+                var needsToJoin = true;
+                
+                // The room members is available in the data fetched by initialSync
+                if ($scope.room) {
+
+                    var messages = $scope.room.events;
+
+                    if (0 === messages.length
+                    || (1 === messages.length && "m.room.member" === messages[0].type && "invite" === messages[0].content.membership && $scope.state.user_id === messages[0].state_key)) {
+                        // If we just joined a room, we won't have this history from initial sync, so we should try to paginate it anyway    
+                        $scope.state.first_pagination = true;
+                    }
+                    else {
+                        // There is no need to do a 1st pagination (initialSync provided enough to fill a page)
+                        $scope.state.first_pagination = false;
+                    }
+
+                    var members = $scope.room.current_room_state.members;
+
+                    // Update the member list
+                    for (var i in members) {
+                        if (!members.hasOwnProperty(i)) continue;
+
+                        var member = members[i].event;
+                        updateMemberList(member);
+                    }
+
+                    // Check if the user has already join the room
+                    if ($scope.state.user_id in members) {
+                        if ("join" === members[$scope.state.user_id].event.content.membership) {
+                            needsToJoin = false;
+                        }
+                    }
+                }
+                
+                // Do we to join the room before starting?
+                if (needsToJoin) {
+                    $scope.state.waiting_for_joined_event = true;
+                    matrixService.join($scope.room_id).then(
+                        function() {
+                            // TODO: factor out the common housekeeping whenever we try to join a room or alias
+                            matrixService.roomState($scope.room_id).then(
+                                function(response) {
+                                    eventHandlerService.handleEvents(response.data, false, true);
+                                },
+                                function(error) {
+                                    console.error("Failed to get room state for: " + $scope.room_id);
+                                }
+                            );                                        
+                            
+                            // onInit3 will be called once the joined m.room.member event is received from the events stream
+                            // This avoids to get the joined information twice in parallel:
+                            //    - one from the events stream
+                            //    - one from the pagination because the pagination window covers this event ts
+                            console.log("Joined room "+$scope.room_id);
+                        },
+                        function(reason) {
+                            console.log("Can't join room: " + JSON.stringify(reason));
+                            // FIXME: what if it wasn't a perms problem?
+                            $scope.state.permission_denied = "You do not have permission to join this room";
+                        });
+                }
+                else {
+                    onInit3();
+                }
+            }
+        );
+    };
+
+    var onInit3 = function() {
+        console.log("onInit3");
+
+        // Make recents highlight the current room
+        $scope.recentsSelectedRoomID = $scope.room_id;
+
+        // Init the history for this room
+        history.init();
+
+        // Get the up-to-date the current member list
+        matrixService.getMemberList($scope.room_id).then(
+            function(response) {
+                for (var i = 0; i < response.data.chunk.length; i++) {
+                    var chunk = response.data.chunk[i];
+                    updateMemberList(chunk);
+
+                    // Add his power level
+                    updateUserPowerLevel(chunk.user_id);
+                }
+
+                // Arm list timing update timer
+                updateMemberListPresenceAge();
+
+                // Allow pagination
+                $scope.state.can_paginate = true;
+
+                // Do a first pagination only if it is required
+                // FIXME: Should be no more require when initialSync/{room_id} will be available
+                if ($scope.state.first_pagination) {
+                    paginate(MESSAGES_PER_PAGINATION);
+                }
+                else {
+                    // There are already messages, go to the last message
+                    scrollToBottom(true);
+                }
+            },
+            function(error) {
+                $scope.feedback = "Failed get member list: " + error.data.error;
+            }
+        );
+    }; 
+    
+    $scope.inviteUser = function() {
+        
+        matrixService.invite($scope.room_id, $scope.userIDToInvite).then(
+            function() {
+                console.log("Invited.");
+                $scope.feedback = "Invite successfully sent to " + $scope.userIDToInvite;
+                $scope.userIDToInvite = "";
+            },
+            function(reason) {
+                $scope.feedback = "Failure: " + reason.data.error;
+            });
+    };
+
+    $scope.leaveRoom = function() {
+        
+        matrixService.leave($scope.room_id).then(
+            function(response) {
+                console.log("Left room " + $scope.room_id);
+                $location.url("home");
+            },
+            function(error) {
+                $scope.feedback = "Failed to leave room: " + error.data.error;
+            });
+    };
+
+    $scope.sendImage = function(url, body) {
+        scrollToBottom(true);
+        
+        matrixService.sendImageMessage($scope.room_id, url, body).then(
+            function() {
+                console.log("Image sent");
+            },
+            function(error) {
+                $scope.feedback = "Failed to send image: " + error.data.error;
+            });
+    };
+    
+    $scope.imageFileToSend;
+    $scope.$watch("imageFileToSend", function(newValue, oldValue) {
+        if ($scope.imageFileToSend) {
+            // Upload this image with its thumbnail to Internet
+            mFileUpload.uploadImageAndThumbnail($scope.imageFileToSend, THUMBNAIL_SIZE).then(
+                function(imageMessage) {
+                    // imageMessage is complete message structure, send it as is
+                    matrixService.sendMessage($scope.room_id, undefined, imageMessage).then(
+                        function() {
+                            console.log("Image message sent");
+                        },
+                        function(error) {
+                            $scope.feedback = "Failed to send image message: " + error.data.error;
+                        });
+                },
+                function(error) {
+                    $scope.feedback = "Can't upload image";
+                }
+            );
+        }
+    });
+    
+    $scope.loadMoreHistory = function() {
+        paginate(MESSAGES_PER_PAGINATION);
+    };
+
+    $scope.startVoiceCall = function() {
+        var call = new MatrixCall($scope.room_id);
+        call.onError = $rootScope.onCallError;
+        call.onHangup = $rootScope.onCallHangup;
+        // remote video element is used for playing audio in voice calls
+        call.remoteVideoElement = angular.element('#remoteVideo')[0];
+        call.placeVoiceCall();
+        $rootScope.currentCall = call;
+    };
+
+    $scope.startVideoCall = function() {
+        var call = new MatrixCall($scope.room_id);
+        call.onError = $rootScope.onCallError;
+        call.onHangup = $rootScope.onCallHangup;
+        call.localVideoElement = angular.element('#localVideo')[0];
+        call.remoteVideoElement = angular.element('#remoteVideo')[0];
+        call.placeVideoCall();
+        $rootScope.currentCall = call;
+    };
+
+    // Manage history of typed messages
+    // History is saved in sessionStoratge so that it survives when the user
+    // navigates through the rooms and when it refreshes the page
+    var history = {
+        // The list of typed messages. Index 0 is the more recents
+        data: [],
+
+        // The position in the history currently displayed
+        position: -1,
+
+        // The message the user has started to type before going into the history
+        typingMessage: undefined,
+
+        // Init/load data for the current room
+        init: function() {
+            var data = sessionStorage.getItem("history_" + $scope.room_id);
+            if (data) {
+                this.data = JSON.parse(data);
+            }
+        },
+
+        // Store a message in the history
+        push: function(message) {
+            this.data.unshift(message);
+
+            // Update the session storage
+            sessionStorage.setItem("history_" + $scope.room_id, JSON.stringify(this.data));
+
+            // Reset history position
+            this.position = -1;
+            this.typingMessage = undefined;
+        },
+
+        // Move in the history
+        go: function(offset) {
+
+            if (-1 === this.position) {
+                // User starts to go to into the history, save the current line
+                this.typingMessage = $('#mainInput').val();
+            }
+            else {
+                // If the user modified this line in history, keep the change
+                this.data[this.position] = $('#mainInput').val();
+            }
+
+            // Bounds the new position to valid data
+            var newPosition = this.position + offset;
+            newPosition = Math.max(-1, newPosition);
+            newPosition = Math.min(newPosition, this.data.length - 1);
+            this.position = newPosition;
+
+            if (-1 !== this.position) {
+                // Show the message from the history
+                $('#mainInput').val(this.data[this.position]);
+            }
+            else if (undefined !== this.typingMessage) {
+                // Go back to the message the user started to type
+                $('#mainInput').val(this.typingMessage);
+            }
+        }
+    };
+
+    // Make history singleton methods available from HTML
+    $scope.history = {
+        goUp: function($event) {
+            if ($scope.room_id) {
+                history.go(1);
+            }
+            $event.preventDefault();
+        },
+        goDown: function($event) {
+            if ($scope.room_id) {
+                history.go(-1);
+            }
+            $event.preventDefault();
+        }
+    };
+
+    $scope.openJson = function(content) {
+        $scope.event_selected = angular.copy(content);
+        
+        // FIXME: Pre-calculated event data should be stripped in a nicer way.
+        $scope.event_selected.__room_member = undefined;
+        $scope.event_selected.__target_room_member = undefined;
+        
+        // scope this so the template can check power levels and enable/disable
+        // buttons
+        $scope.pow = eventHandlerService.getUserPowerLevel;
+
+        var modalInstance = $modal.open({
+            templateUrl: 'eventInfoTemplate.html',
+            controller: 'EventInfoController',
+            scope: $scope
+        });
+
+        modalInstance.result.then(function(action) {
+            if (action === "redact") {
+                var eventId = $scope.event_selected.event_id;
+                console.log("Redacting event ID " + eventId);
+                matrixService.redactEvent(
+                    $scope.event_selected.room_id,
+                    eventId
+                ).then(function(response) {
+                    console.log("Redaction = " + JSON.stringify(response));
+                }, function(error) {
+                    console.error("Failed to redact event: "+JSON.stringify(error));
+                    if (error.data.error) {
+                        $scope.feedback = error.data.error;
+                    }
+                });
+            }
+        }, function() {
+            // any dismiss code
+        });
+    };
+
+    $scope.openRoomInfo = function() {
+        $scope.roomInfo = {};
+        $scope.roomInfo.newEvent = {
+            content: {},
+            type: "",
+            state_key: ""
+        };
+
+        var stateEvents = $scope.room.current_room_state.state_events;
+        // The modal dialog will 2-way bind this field, so we MUST make a deep
+        // copy of the state events else we will be *actually adjusing our view
+        // of the world* when fiddling with the JSON!! Apparently parse/stringify
+        // is faster than jQuery's extend when doing deep copies.
+        $scope.roomInfo.stateEvents = JSON.parse(JSON.stringify(stateEvents));
+        var modalInstance = $modal.open({
+            templateUrl: 'roomInfoTemplate.html',
+            controller: 'RoomInfoController',
+            size: 'lg',
+            scope: $scope
+        });
+    };
+
+}])
+.controller('EventInfoController', function($scope, $modalInstance) {
+    console.log("Displaying modal dialog for >>>> " + JSON.stringify($scope.event_selected));
+    $scope.redact = function() {
+        console.log("User level = "+$scope.pow($scope.room_id, $scope.state.user_id)+
+                    " Redact level = "+$scope.room.current_room_state.state_events["m.room.ops_levels"].content.redact_level);
+        console.log("Redact event >> " + JSON.stringify($scope.event_selected));
+        $modalInstance.close("redact");
+    };
+})
+.controller('RoomInfoController', function($scope, $modalInstance, $filter, matrixService) {
+    console.log("Displaying room info.");
+
+    $scope.submit = function(event) {
+        if (event.content) {
+            console.log("submit >>> " + JSON.stringify(event.content));
+            matrixService.sendStateEvent($scope.room_id, event.type, 
+                event.content, event.state_key).then(function(response) {
+                    $modalInstance.dismiss();
+                }, function(err) {
+                    $scope.feedback = err.data.error;
+                }
+            );
+        }
+    };
+
+    $scope.dismiss = $modalInstance.dismiss;
+
+});