mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-15 01:24:18 -05:00
622 lines
25 KiB
JavaScript
622 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 and broadcast them to any listeners
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(e.g. controllers) via $broadcast.
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*/
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angular.module('eventHandlerService', [])
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.factory('eventHandlerService', ['matrixService', '$rootScope', '$q', '$timeout', '$filter', 'mPresence', 'notificationService', 'modelService',
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function(matrixService, $rootScope, $q, $timeout, $filter, mPresence, notificationService, modelService) {
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var ROOM_CREATE_EVENT = "ROOM_CREATE_EVENT";
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var MSG_EVENT = "MSG_EVENT";
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var MEMBER_EVENT = "MEMBER_EVENT";
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var PRESENCE_EVENT = "PRESENCE_EVENT";
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var POWERLEVEL_EVENT = "POWERLEVEL_EVENT";
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var CALL_EVENT = "CALL_EVENT";
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var NAME_EVENT = "NAME_EVENT";
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var TOPIC_EVENT = "TOPIC_EVENT";
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var RESET_EVENT = "RESET_EVENT"; // eventHandlerService has been resetted
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// used for dedupping events - could be expanded in future...
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// FIXME: means that we leak memory over time (along with lots of the rest
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// of the app, given we never try to reap memory yet)
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var eventMap = {};
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// TODO: Remove this and replace with modelService.User objects.
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$rootScope.presence = {};
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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.presence = {};
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eventMap = {};
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};
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reset();
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var resetRoomMessages = function(room_id) {
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var room = modelService.getRoom(room_id);
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room.events = [];
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};
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// Generic method to handle events data
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var handleRoomStateEvent = function(event, isLiveEvent, addToRoomMessages) {
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var room = modelService.getRoom(event.room_id);
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if (addToRoomMessages) {
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// some state events are displayed as messages, so add them.
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room.addMessageEvent(event, !isLiveEvent);
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}
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if (isLiveEvent) {
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// update the current room state with the latest state
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room.current_room_state.storeStateEvent(event);
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}
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else {
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var eventTs = event.origin_server_ts;
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var storedEvent = room.current_room_state.getStateEvent(event.type, event.state_key);
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if (storedEvent) {
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if (storedEvent.origin_server_ts < eventTs) {
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// the incoming event is newer, use it.
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room.current_room_state.storeStateEvent(event);
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}
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}
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}
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// TODO: handle old_room_state
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};
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var handleRoomCreate = function(event, isLiveEvent) {
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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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modelService.createRoomIdToAliasMapping(event.room_id, event.content.aliases[0]);
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};
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var containsBingWord = function(event) {
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if (!event.content || !event.content.body) {
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return false;
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}
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return notificationService.containsBingWord(
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matrixService.config().user_id,
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matrixService.config().display_name,
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matrixService.config().bingWords,
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event.content.body
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);
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};
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var displayNotification = function(event) {
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if (window.Notification && event.user_id != matrixService.config().user_id) {
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var shouldBing = containsBingWord(event);
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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 = modelService.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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else if (event.content.msgtype === "m.image") {
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message = displayname + " sent an image.";
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}
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var roomTitle = $filter("mRoomName")(event.room_id);
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notificationService.showNotification(
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displayname + " (" + roomTitle + ")",
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message,
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member ? member.event.content.avatar_url : undefined,
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function() {
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console.log("notification.onclick() room=" + event.room_id);
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$rootScope.goToPage('room/' + event.room_id);
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}
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);
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}
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}
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};
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var handleMessage = function(event, isLiveEvent) {
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// Check for empty event content
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var hasContent = false;
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for (var prop in event.content) {
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hasContent = true;
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break;
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}
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if (!hasContent) {
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// empty json object is a redacted event, so ignore.
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return;
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}
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// =======================
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var room = modelService.getRoom(event.room_id);
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if (event.user_id !== matrixService.config().user_id) {
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room.addMessageEvent(event, !isLiveEvent);
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displayNotification(event);
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}
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else {
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// we may have locally echoed this, so we should replace the event
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// instead of just adding.
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room.addOrReplaceMessageEvent(event, !isLiveEvent);
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}
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// TODO send delivery receipt if isLiveEvent
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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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var room = modelService.getRoom(event.room_id);
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// did something change?
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var memberChanges = undefined;
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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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if ((event.prev_content === undefined && event.content.membership) || (event.prev_content && (event.prev_content.membership !== 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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}
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// modify state before adding the message so it points to the right thing.
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// The events are copied to avoid referencing the same event when adding
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// the message (circular json structures)
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if (isStateEvent || isLiveEvent) {
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var newEvent = angular.copy(event);
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newEvent.cnt = event.content;
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room.current_room_state.storeStateEvent(newEvent);
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}
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else if (!isLiveEvent) {
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// mutate the old room state
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var oldEvent = angular.copy(event);
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oldEvent.cnt = event.content;
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if (event.prev_content) {
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// the m.room.member event we are handling is the NEW event. When
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// we keep going back in time, we want the PREVIOUS value for displaying
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// names/etc, hence the clobber here.
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oldEvent.cnt = event.prev_content;
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}
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if (event.changedKey === "membership" && event.content.membership === "join") {
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// join has a prev_content but it doesn't contain all the info unlike the join, so use that.
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oldEvent.cnt = event.content;
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}
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room.old_room_state.storeStateEvent(oldEvent);
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}
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// If there was a change we want to display, dump it in the message
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// list. This has to be done after room state is updated.
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if (memberChanges) {
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room.addMessageEvent(event, !isLiveEvent);
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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.$broadcast(PRESENCE_EVENT, event, isLiveEvent);
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};
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var handlePowerLevels = function(event, isLiveEvent) {
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handleRoomStateEvent(event, isLiveEvent);
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$rootScope.$broadcast(POWERLEVEL_EVENT, event, isLiveEvent);
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};
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var handleRoomName = function(event, isLiveEvent, isStateEvent) {
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console.log("handleRoomName room_id: " + event.room_id + " - isLiveEvent: " + isLiveEvent + " - name: " + event.content.name);
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handleRoomStateEvent(event, isLiveEvent, !isStateEvent);
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$rootScope.$broadcast(NAME_EVENT, event, isLiveEvent);
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};
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var handleRoomTopic = function(event, isLiveEvent, isStateEvent) {
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console.log("handleRoomTopic room_id: " + event.room_id + " - isLiveEvent: " + isLiveEvent + " - topic: " + event.content.topic);
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handleRoomStateEvent(event, isLiveEvent, !isStateEvent);
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$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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var room = modelService.getRoom(event.room_id);
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room.addMessageEvent(event, !isLiveEvent);
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}
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};
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var handleRedaction = function(event, isLiveEvent) {
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if (!isLiveEvent) {
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// we have nothing to remove, so just ignore it.
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console.log("Received redacted event: "+JSON.stringify(event));
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return;
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}
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// we need to remove something possibly: do we know the redacted
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// event ID?
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if (eventMap[event.redacts]) {
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var room = modelService.getRoom(event.room_id);
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// remove event from list of messages in this room.
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var eventList = room.events;
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for (var i=0; i<eventList.length; i++) {
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if (eventList[i].event_id === event.redacts) {
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console.log("Removing event " + event.redacts);
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eventList.splice(i, 1);
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break;
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}
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}
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console.log("Redacted an event.");
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}
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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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* @param {boolean} wrap whether to insert whitespace into the userid (if displayname not available) to help it wrap
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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, wrap) {
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var displayName;
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// XXX: this is getting called *way* too often - at least once per every room member per every digest...
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// Get the user display name from the member list of the room
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var member = modelService.getMember(room_id, user_id);
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if (member) {
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member = member.event;
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}
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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 = modelService.getRoom(room_id);
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for (var member_id in room.current_room_state.members) {
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if (room.current_room_state.members.hasOwnProperty(member_id) && member_id !== user_id) {
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var member2 = room.current_room_state.members[member_id].event;
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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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if (wrap && user_id.indexOf(':') >= 0) {
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displayName = user_id.substr(0, user_id.indexOf(':')) + " " + user_id.substr(user_id.indexOf(':'));
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}
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else {
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displayName = user_id;
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}
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}
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//console.log("getUserDisplayName(" + room_id + ", " + user_id + ", " + wrap +") = " + displayName);
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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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handleEvent: function(event, isLiveEvent, isStateEvent) {
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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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case 'm.room.redaction':
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handleRedaction(event, isLiveEvent);
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break;
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default:
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// if it is a state event, then just add it in so it
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// displays on the Room Info screen.
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if (typeof(event.state_key) === "string") { // incls. 0-len strings
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if (event.room_id) {
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handleRoomStateEvent(event, isLiveEvent, false);
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}
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}
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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
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// messages get appended to the start/end of lists, etc.
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handleEvents: function(events, isLiveEvents, isStateEvents) {
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for (var i=0; i<events.length; i++) {
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this.handleEvent(events[i], isLiveEvents, isStateEvents);
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}
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},
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// Handle messages from /initialSync or /messages
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handleRoomMessages: function(room_id, messages, isLiveEvents, dir) {
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var events = messages.chunk;
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// Handles messages according to their time order
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if (dir && 'b' === dir) {
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// paginateBackMessages requests messages to be in reverse chronological order
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for (var i=0; i<events.length; i++) {
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this.handleEvent(events[i], isLiveEvents, isLiveEvents);
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}
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// Store how far back we've paginated
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var room = modelService.getRoom(room_id);
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room.old_room_state.pagination_token = messages.end;
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}
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else {
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// InitialSync returns messages in chronological order, so invert
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// it to get most recent > oldest
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for (var i=events.length - 1; i>=0; i--) {
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this.handleEvent(events[i], isLiveEvents, isLiveEvents);
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}
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// Store where to start pagination
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var room = modelService.getRoom(room_id);
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room.old_room_state.pagination_token = messages.start;
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}
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},
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handleInitialSyncDone: function(response) {
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console.log("# handleInitialSyncDone");
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var rooms = response.data.rooms;
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for (var i = 0; i < rooms.length; ++i) {
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var room = rooms[i];
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// FIXME: This is ming: the HS should be sending down the m.room.member
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// event for the invite in .state but it isn't, so fudge it for now.
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if (room.inviter && room.membership === "invite") {
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var me = matrixService.config().user_id;
|
|
var fakeEvent = {
|
|
event_id: "__FAKE__" + room.room_id,
|
|
user_id: room.inviter,
|
|
origin_server_ts: 0,
|
|
room_id: room.room_id,
|
|
state_key: me,
|
|
type: "m.room.member",
|
|
content: {
|
|
membership: "invite"
|
|
}
|
|
};
|
|
if (!room.state) {
|
|
room.state = [];
|
|
}
|
|
room.state.push(fakeEvent);
|
|
console.log("RECV /initialSync invite >> "+room.room_id);
|
|
}
|
|
|
|
var newRoom = modelService.getRoom(room.room_id);
|
|
newRoom.current_room_state.storeStateEvents(room.state);
|
|
newRoom.old_room_state.storeStateEvents(room.state);
|
|
|
|
// this should be done AFTER storing state events since these
|
|
// messages may make the old_room_state diverge.
|
|
if ("messages" in room) {
|
|
this.handleRoomMessages(room.room_id, room.messages, false);
|
|
newRoom.current_room_state.pagination_token = room.messages.end;
|
|
newRoom.old_room_state.pagination_token = room.messages.start;
|
|
}
|
|
}
|
|
var presence = response.data.presence;
|
|
this.handleEvents(presence, false);
|
|
|
|
initialSyncDeferred.resolve(response);
|
|
},
|
|
|
|
// Returns a promise that resolves when the initialSync request has been processed
|
|
waitForInitialSyncCompletion: function() {
|
|
return initialSyncDeferred.promise;
|
|
},
|
|
|
|
resetRoomMessages: function(room_id) {
|
|
resetRoomMessages(room_id);
|
|
},
|
|
|
|
eventContainsBingWord: function(event) {
|
|
return containsBingWord(event);
|
|
},
|
|
|
|
/**
|
|
* 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 events = modelService.getRoom(room_id).events;
|
|
for (var i = events.length - 1; i >= 0; i--) {
|
|
var message = events[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 = modelService.getRoom(room_id);
|
|
memberCount = 0;
|
|
for (var i in room.current_room_state.members) {
|
|
if (!room.current_room_state.members.hasOwnProperty(i)) continue;
|
|
|
|
var member = room.current_room_state.members[i].event;
|
|
|
|
if ("join" === member.content.membership) {
|
|
memberCount = memberCount + 1;
|
|
}
|
|
}
|
|
|
|
return memberCount;
|
|
},
|
|
|
|
/**
|
|
* Return the power level of an user in a particular room
|
|
* @param {String} room_id the room id
|
|
* @param {String} user_id the user id
|
|
* @returns {Number} a value between 0 and 10
|
|
*/
|
|
getUserPowerLevel: function(room_id, user_id) {
|
|
var powerLevel = 0;
|
|
var room = modelService.getRoom(room_id).current_room_state;
|
|
if (room.state("m.room.power_levels")) {
|
|
if (user_id in room.state("m.room.power_levels").content) {
|
|
powerLevel = room.state("m.room.power_levels").content[user_id];
|
|
}
|
|
else {
|
|
// Use the room default user power
|
|
powerLevel = room.state("m.room.power_levels").content["default"];
|
|
}
|
|
}
|
|
return powerLevel;
|
|
},
|
|
|
|
/**
|
|
* 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
|
|
* @param {boolean} wrap whether to insert whitespace into the userid (if displayname not available) to help it wrap
|
|
* @returns {String} the user displayname or user_id if not available
|
|
*/
|
|
getUserDisplayName: function(room_id, user_id, wrap) {
|
|
return getUserDisplayName(room_id, user_id, wrap);
|
|
}
|
|
};
|
|
}]);
|