mirror of
https://mau.dev/maunium/synapse.git
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623 lines
25 KiB
JavaScript
623 lines
25 KiB
JavaScript
/*
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Copyright 2014 OpenMarket Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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'use strict';
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/*
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This service handles what should happen when you get an event. This service does
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not care where the event came from, it only needs enough context to be able to
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process them. Events may be coming from the event stream, the REST API (via
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direct GETs or via a pagination stream API), etc.
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Typically, this service will store events or broadcast them to any listeners
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(e.g. controllers) via $broadcast. Alternatively, it may update the $rootScope
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if typically all the $on method would do is update its own $scope.
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*/
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angular.module('eventHandlerService', [])
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.factory('eventHandlerService', ['matrixService', '$rootScope', '$q', '$timeout', 'mPresence',
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function(matrixService, $rootScope, $q, $timeout, mPresence) {
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var ROOM_CREATE_EVENT = "ROOM_CREATE_EVENT";
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var MSG_EVENT = "MSG_EVENT";
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var MEMBER_EVENT = "MEMBER_EVENT";
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var PRESENCE_EVENT = "PRESENCE_EVENT";
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var POWERLEVEL_EVENT = "POWERLEVEL_EVENT";
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var CALL_EVENT = "CALL_EVENT";
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var NAME_EVENT = "NAME_EVENT";
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var TOPIC_EVENT = "TOPIC_EVENT";
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var RESET_EVENT = "RESET_EVENT"; // eventHandlerService has been resetted
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// used for dedupping events - could be expanded in future...
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// FIXME: means that we leak memory over time (along with lots of the rest
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// of the app, given we never try to reap memory yet)
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var eventMap = {};
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$rootScope.presence = {};
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// TODO: This is attached to the rootScope so .html can just go containsBingWord
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// for determining classes so it is easy to highlight bing messages. It seems a
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// bit strange to put the impl in this service though, but I can't think of a better
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// file to put it in.
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$rootScope.containsBingWord = function(content) {
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if (!content || $.type(content) != "string") {
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return false;
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}
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var bingWords = matrixService.config().bingWords;
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var shouldBing = false;
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// case-insensitive name check for user_id OR display_name if they exist
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var myUserId = matrixService.config().user_id;
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if (myUserId) {
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myUserId = myUserId.toLocaleLowerCase();
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}
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var myDisplayName = matrixService.config().display_name;
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if (myDisplayName) {
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myDisplayName = myDisplayName.toLocaleLowerCase();
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}
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if ( (myDisplayName && content.toLocaleLowerCase().indexOf(myDisplayName) != -1) ||
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(myUserId && content.toLocaleLowerCase().indexOf(myUserId) != -1) ) {
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shouldBing = true;
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}
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// bing word list check
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if (bingWords && !shouldBing) {
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for (var i=0; i<bingWords.length; i++) {
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var re = RegExp(bingWords[i]);
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if (content.search(re) != -1) {
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shouldBing = true;
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break;
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}
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}
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}
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return shouldBing;
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};
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var initialSyncDeferred;
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var reset = function() {
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initialSyncDeferred = $q.defer();
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$rootScope.events = {
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rooms: {} // will contain roomId: { messages:[], members:{userid1: event} }
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};
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$rootScope.presence = {};
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eventMap = {};
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};
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reset();
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var initRoom = function(room_id, room) {
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if (!(room_id in $rootScope.events.rooms)) {
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console.log("Creating new rooms entry for " + room_id);
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$rootScope.events.rooms[room_id] = {
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room_id: room_id,
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messages: [],
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members: {},
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// Pagination information
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pagination: {
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earliest_token: "END" // how far back we've paginated
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}
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};
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}
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if (room) { // we got an existing room object from initialsync, seemingly.
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// Report all other metadata of the room object (membership, inviter, visibility, ...)
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for (var field in room) {
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if (!room.hasOwnProperty(field)) continue;
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if (-1 === ["room_id", "messages", "state"].indexOf(field)) { // why indexOf - why not ===? --Matthew
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$rootScope.events.rooms[room_id][field] = room[field];
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}
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}
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$rootScope.events.rooms[room_id].membership = room.membership;
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}
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};
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var resetRoomMessages = function(room_id) {
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if ($rootScope.events.rooms[room_id]) {
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$rootScope.events.rooms[room_id].messages = [];
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}
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};
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// Generic method to handle events data
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var handleRoomDateEvent = function(event, isLiveEvent, addToRoomMessages) {
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// Add topic changes as if they were a room message
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if (addToRoomMessages) {
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if (isLiveEvent) {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.unshift(event);
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}
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}
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// live events always update, but non-live events only update if the
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// ts is later.
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var latestData = true;
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if (!isLiveEvent) {
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var eventTs = event.ts;
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var storedEvent = $rootScope.events.rooms[event.room_id][event.type];
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if (storedEvent) {
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if (storedEvent.ts > eventTs) {
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// ignore it, we have a newer one already.
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latestData = false;
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}
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}
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}
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if (latestData) {
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$rootScope.events.rooms[event.room_id][event.type] = event;
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}
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};
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var handleRoomCreate = function(event, isLiveEvent) {
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// For now, we do not use the event data. Simply signal it to the app controllers
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$rootScope.$broadcast(ROOM_CREATE_EVENT, event, isLiveEvent);
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};
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var handleRoomAliases = function(event, isLiveEvent) {
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matrixService.createRoomIdToAliasMapping(event.room_id, event.content.aliases[0]);
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};
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var handleMessage = function(event, isLiveEvent) {
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if (isLiveEvent) {
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if (event.user_id === matrixService.config().user_id &&
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(event.content.msgtype === "m.text" || event.content.msgtype === "m.emote") ) {
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// Assume we've already echoed it. So, there is a fake event in the messages list of the room
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// Replace this fake event by the true one
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var index = getRoomEventIndex(event.room_id, event.event_id);
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if (index) {
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$rootScope.events.rooms[event.room_id].messages[index] = event;
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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if (window.Notification && event.user_id != matrixService.config().user_id) {
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var shouldBing = $rootScope.containsBingWord(event.content.body);
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// Ideally we would notify only when the window is hidden (i.e. document.hidden = true).
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//
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// However, Chrome on Linux and OSX currently returns document.hidden = false unless the window is
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// explicitly showing a different tab. So we need another metric to determine hiddenness - we
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// simply use idle time. If the user has been idle enough that their presence goes to idle, then
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// we also display notifs when things happen.
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//
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// This is far far better than notifying whenever anything happens anyway, otherwise you get spammed
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// to death with notifications when the window is in the foreground, which is horrible UX (especially
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// if you have not defined any bingers and so get notified for everything).
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var isIdle = (document.hidden || matrixService.presence.unavailable === mPresence.getState());
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// We need a way to let people get notifications for everything, if they so desire. The way to do this
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// is to specify zero bingwords.
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var bingWords = matrixService.config().bingWords;
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if (bingWords === undefined || bingWords.length === 0) {
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shouldBing = true;
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}
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if (shouldBing && isIdle) {
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console.log("Displaying notification for "+JSON.stringify(event));
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var member = getMember(event.room_id, event.user_id);
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var displayname = getUserDisplayName(event.room_id, event.user_id);
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var message = event.content.body;
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if (event.content.msgtype === "m.emote") {
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message = "* " + displayname + " " + message;
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}
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var notification = new window.Notification(
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displayname +
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" (" + (matrixService.getRoomIdToAliasMapping(event.room_id) || event.room_id) + ")", // FIXME: don't leak room_ids here
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{
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"body": message,
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"icon": member ? member.avatar_url : undefined
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});
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$timeout(function() {
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notification.close();
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}, 5 * 1000);
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}
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}
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.unshift(event);
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}
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// TODO send delivery receipt if isLiveEvent
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// $broadcast this, as controllers may want to do funky things such as
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// scroll to the bottom, etc which cannot be expressed via simple $scope
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// updates.
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$rootScope.$broadcast(MSG_EVENT, event, isLiveEvent);
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};
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var handleRoomMember = function(event, isLiveEvent, isStateEvent) {
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// add membership changes as if they were a room message if something interesting changed
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// Exception: Do not do this if the event is a room state event because such events already come
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// as room messages events. Moreover, when they come as room messages events, they are relatively ordered
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// with other other room messages
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if (!isStateEvent) {
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// could be a membership change, display name change, etc.
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// Find out which one.
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var memberChanges = undefined;
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if (event.content.prev !== event.content.membership) {
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memberChanges = "membership";
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}
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else if (event.prev_content && (event.prev_content.displayname !== event.content.displayname)) {
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memberChanges = "displayname";
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}
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// mark the key which changed
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event.changedKey = memberChanges;
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// If there was a change we want to display, dump it in the message
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// list.
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if (memberChanges) {
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if (isLiveEvent) {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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else {
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$rootScope.events.rooms[event.room_id].messages.unshift(event);
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}
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}
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}
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// Use data from state event or the latest data from the stream.
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// Do not care of events that come when paginating back
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if (isStateEvent || isLiveEvent) {
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$rootScope.events.rooms[event.room_id].members[event.state_key] = event;
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}
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$rootScope.$broadcast(MEMBER_EVENT, event, isLiveEvent, isStateEvent);
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};
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var handlePresence = function(event, isLiveEvent) {
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$rootScope.presence[event.content.user_id] = event;
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$rootScope.$broadcast(PRESENCE_EVENT, event, isLiveEvent);
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};
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var handlePowerLevels = function(event, isLiveEvent) {
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// Keep the latest data. Do not care of events that come when paginating back
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if (!$rootScope.events.rooms[event.room_id][event.type] || isLiveEvent) {
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$rootScope.events.rooms[event.room_id][event.type] = event;
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$rootScope.$broadcast(POWERLEVEL_EVENT, event, isLiveEvent);
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}
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};
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var handleRoomName = function(event, isLiveEvent, isStateEvent) {
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console.log("handleRoomName room_id: " + event.room_id + " - isLiveEvent: " + isLiveEvent + " - name: " + event.content.name);
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handleRoomDateEvent(event, isLiveEvent, !isStateEvent);
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$rootScope.$broadcast(NAME_EVENT, event, isLiveEvent);
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};
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var handleRoomTopic = function(event, isLiveEvent, isStateEvent) {
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console.log("handleRoomTopic room_id: " + event.room_id + " - isLiveEvent: " + isLiveEvent + " - topic: " + event.content.topic);
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handleRoomDateEvent(event, isLiveEvent, !isStateEvent);
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$rootScope.$broadcast(TOPIC_EVENT, event, isLiveEvent);
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};
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var handleCallEvent = function(event, isLiveEvent) {
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$rootScope.$broadcast(CALL_EVENT, event, isLiveEvent);
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if (event.type === 'm.call.invite') {
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$rootScope.events.rooms[event.room_id].messages.push(event);
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}
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};
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/**
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* Get the index of the event in $rootScope.events.rooms[room_id].messages
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* @param {type} room_id the room id
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* @param {type} event_id the event id to look for
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* @returns {Number | undefined} the index. undefined if not found.
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*/
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var getRoomEventIndex = function(room_id, event_id) {
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var index;
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var room = $rootScope.events.rooms[room_id];
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if (room) {
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// Start looking from the tail since the first goal of this function
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// is to find a messaged among the latest ones
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for (var i = room.messages.length - 1; i > 0; i--) {
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var message = room.messages[i];
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if (event_id === message.event_id) {
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index = i;
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break;
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}
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}
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}
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return index;
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};
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/**
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* Get the member object of a room member
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* @param {String} room_id the room id
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* @param {String} user_id the id of the user
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* @returns {undefined | Object} the member object of this user in this room if he is part of the room
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*/
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var getMember = function(room_id, user_id) {
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var member;
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var room = $rootScope.events.rooms[room_id];
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if (room) {
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member = room.members[user_id];
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}
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return member;
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};
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/**
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* Return the display name of an user acccording to data already downloaded
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* @param {String} room_id the room id
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* @param {String} user_id the id of the user
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* @returns {String} the user displayname or user_id if not available
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*/
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var getUserDisplayName = function(room_id, user_id) {
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var displayName;
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// Get the user display name from the member list of the room
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var member = getMember(room_id, user_id);
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if (member && member.content.displayname) { // Do not consider null displayname
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displayName = member.content.displayname;
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// Disambiguate users who have the same displayname in the room
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if (user_id !== matrixService.config().user_id) {
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var room = $rootScope.events.rooms[room_id];
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for (var member_id in room.members) {
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if (room.members.hasOwnProperty(member_id) && member_id !== user_id) {
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var member2 = room.members[member_id];
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if (member2.content.displayname && member2.content.displayname === displayName) {
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displayName = displayName + " (" + user_id + ")";
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break;
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}
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}
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}
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}
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}
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// The user may not have joined the room yet. So try to resolve display name from presence data
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// Note: This data may not be available
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if (undefined === displayName && user_id in $rootScope.presence) {
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displayName = $rootScope.presence[user_id].content.displayname;
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}
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if (undefined === displayName) {
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// By default, use the user ID
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displayName = user_id;
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}
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return displayName;
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};
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return {
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ROOM_CREATE_EVENT: ROOM_CREATE_EVENT,
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MSG_EVENT: MSG_EVENT,
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MEMBER_EVENT: MEMBER_EVENT,
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PRESENCE_EVENT: PRESENCE_EVENT,
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POWERLEVEL_EVENT: POWERLEVEL_EVENT,
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CALL_EVENT: CALL_EVENT,
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NAME_EVENT: NAME_EVENT,
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TOPIC_EVENT: TOPIC_EVENT,
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RESET_EVENT: RESET_EVENT,
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reset: function() {
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reset();
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$rootScope.$broadcast(RESET_EVENT);
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},
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initRoom: function(room) {
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initRoom(room.room_id, room);
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},
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handleEvent: function(event, isLiveEvent, isStateEvent) {
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// FIXME: /initialSync on a particular room is not yet available
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// So initRoom on a new room is not called. Make sure the room data is initialised here
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if (event.room_id) {
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initRoom(event.room_id);
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}
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// Avoid duplicated events
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// Needed for rooms where initialSync has not been done.
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// In this case, we do not know where to start pagination. So, it starts from the END
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// and we can have the same event (ex: joined, invitation) coming from the pagination
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// AND from the event stream.
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// FIXME: This workaround should be no more required when /initialSync on a particular room
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// will be available (as opposite to the global /initialSync done at startup)
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if (!isStateEvent) { // Do not consider state events
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if (event.event_id && eventMap[event.event_id]) {
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console.log("discarding duplicate event: " + JSON.stringify(event, undefined, 4));
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return;
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}
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else {
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eventMap[event.event_id] = 1;
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}
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}
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if (event.type.indexOf('m.call.') === 0) {
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handleCallEvent(event, isLiveEvent);
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}
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else {
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switch(event.type) {
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case "m.room.create":
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handleRoomCreate(event, isLiveEvent);
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break;
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case "m.room.aliases":
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handleRoomAliases(event, isLiveEvent);
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break;
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case "m.room.message":
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handleMessage(event, isLiveEvent);
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break;
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case "m.room.member":
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handleRoomMember(event, isLiveEvent, isStateEvent);
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break;
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case "m.presence":
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handlePresence(event, isLiveEvent);
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break;
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case 'm.room.ops_levels':
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case 'm.room.send_event_level':
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case 'm.room.add_state_level':
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case 'm.room.join_rules':
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case 'm.room.power_levels':
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handlePowerLevels(event, isLiveEvent);
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break;
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case 'm.room.name':
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handleRoomName(event, isLiveEvent, isStateEvent);
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break;
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case 'm.room.topic':
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handleRoomTopic(event, isLiveEvent, isStateEvent);
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break;
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default:
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console.log("Unable to handle event type " + event.type);
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console.log(JSON.stringify(event, undefined, 4));
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break;
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}
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}
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},
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// isLiveEvents determines whether notifications should be shown, whether
|
|
// messages get appended to the start/end of lists, etc.
|
|
handleEvents: function(events, isLiveEvents, isStateEvents) {
|
|
for (var i=0; i<events.length; i++) {
|
|
this.handleEvent(events[i], isLiveEvents, isStateEvents);
|
|
}
|
|
},
|
|
|
|
// Handle messages from /initialSync or /messages
|
|
handleRoomMessages: function(room_id, messages, isLiveEvents, dir) {
|
|
initRoom(room_id);
|
|
|
|
var events = messages.chunk;
|
|
|
|
// Handles messages according to their time order
|
|
if (dir && 'b' === dir) {
|
|
// paginateBackMessages requests messages to be in reverse chronological order
|
|
for (var i=0; i<events.length; i++) {
|
|
this.handleEvent(events[i], isLiveEvents, isLiveEvents);
|
|
}
|
|
|
|
// Store how far back we've paginated
|
|
$rootScope.events.rooms[room_id].pagination.earliest_token = messages.end;
|
|
}
|
|
else {
|
|
// InitialSync returns messages in chronological order
|
|
for (var i=events.length - 1; i>=0; i--) {
|
|
this.handleEvent(events[i], isLiveEvents, isLiveEvents);
|
|
}
|
|
// Store where to start pagination
|
|
$rootScope.events.rooms[room_id].pagination.earliest_token = messages.start;
|
|
}
|
|
},
|
|
|
|
handleInitialSyncDone: function(initialSyncData) {
|
|
console.log("# handleInitialSyncDone");
|
|
initialSyncDeferred.resolve(initialSyncData);
|
|
},
|
|
|
|
// Returns a promise that resolves when the initialSync request has been processed
|
|
waitForInitialSyncCompletion: function() {
|
|
return initialSyncDeferred.promise;
|
|
},
|
|
|
|
resetRoomMessages: function(room_id) {
|
|
resetRoomMessages(room_id);
|
|
},
|
|
|
|
/**
|
|
* Return the last message event of a room
|
|
* @param {String} room_id the room id
|
|
* @param {Boolean} filterFake true to not take into account fake messages
|
|
* @returns {undefined | Event} the last message event if available
|
|
*/
|
|
getLastMessage: function(room_id, filterEcho) {
|
|
var lastMessage;
|
|
|
|
var room = $rootScope.events.rooms[room_id];
|
|
if (room) {
|
|
for (var i = room.messages.length - 1; i >= 0; i--) {
|
|
var message = room.messages[i];
|
|
|
|
if (!filterEcho || undefined === message.echo_msg_state) {
|
|
lastMessage = message;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return lastMessage;
|
|
},
|
|
|
|
/**
|
|
* Compute the room users number, ie the number of members who has joined the room.
|
|
* @param {String} room_id the room id
|
|
* @returns {undefined | Number} the room users number if available
|
|
*/
|
|
getUsersCountInRoom: function(room_id) {
|
|
var memberCount;
|
|
|
|
var room = $rootScope.events.rooms[room_id];
|
|
if (room) {
|
|
memberCount = 0;
|
|
|
|
for (var i in room.members) {
|
|
if (!room.members.hasOwnProperty(i)) continue;
|
|
|
|
var member = room.members[i];
|
|
|
|
if ("join" === member.membership) {
|
|
memberCount = memberCount + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
return memberCount;
|
|
},
|
|
|
|
/**
|
|
* Get the member object of a room member
|
|
* @param {String} room_id the room id
|
|
* @param {String} user_id the id of the user
|
|
* @returns {undefined | Object} the member object of this user in this room if he is part of the room
|
|
*/
|
|
getMember: function(room_id, user_id) {
|
|
return getMember(room_id, user_id);
|
|
},
|
|
|
|
/**
|
|
* Return the display name of an user acccording to data already downloaded
|
|
* @param {String} room_id the room id
|
|
* @param {String} user_id the id of the user
|
|
* @returns {String} the user displayname or user_id if not available
|
|
*/
|
|
getUserDisplayName: function(room_id, user_id) {
|
|
return getUserDisplayName(room_id, user_id);
|
|
},
|
|
|
|
setRoomVisibility: function(room_id, visible) {
|
|
if (!visible) {
|
|
return;
|
|
}
|
|
initRoom(room_id);
|
|
|
|
var room = $rootScope.events.rooms[room_id];
|
|
if (room) {
|
|
room.visibility = visible;
|
|
}
|
|
}
|
|
};
|
|
}]);
|