mirror of
https://github.com/element-hq/element-web.git
synced 2024-12-03 03:50:42 +03:00
112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
/*
|
|
Copyright 2015 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.
|
|
*/
|
|
|
|
var MatrixClientPeg = require("./MatrixClientPeg");
|
|
var dis = require("./dispatcher");
|
|
|
|
// Time in ms after that a user is considered as unavailable/away
|
|
var UNAVAILABLE_TIME_MS = 3 * 60 * 1000; // 3 mins
|
|
var PRESENCE_STATES = ["online", "offline", "unavailable"];
|
|
|
|
class Presence {
|
|
|
|
/**
|
|
* Start listening the user activity to evaluate his presence state.
|
|
* Any state change will be sent to the Home Server.
|
|
*/
|
|
start() {
|
|
this.running = true;
|
|
if (undefined === this.state) {
|
|
this._resetTimer();
|
|
this.dispatcherRef = dis.register(this._onUserActivity.bind(this));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stop tracking user activity
|
|
*/
|
|
stop() {
|
|
this.running = false;
|
|
if (this.timer) {
|
|
clearInterval(this.timer);
|
|
this.timer = undefined;
|
|
dis.unregister(this.dispatcherRef);
|
|
}
|
|
this.state = undefined;
|
|
}
|
|
|
|
/**
|
|
* Get the current presence state.
|
|
* @returns {string} the presence state (see PRESENCE enum)
|
|
*/
|
|
getState() {
|
|
return this.state;
|
|
}
|
|
|
|
/**
|
|
* Set the presence state.
|
|
* If the state has changed, the Home Server will be notified.
|
|
* @param {string} newState the new presence state (see PRESENCE enum)
|
|
*/
|
|
setState(newState) {
|
|
if (newState === this.state) {
|
|
return;
|
|
}
|
|
if (PRESENCE_STATES.indexOf(newState) === -1) {
|
|
throw new Error("Bad presence state: " + newState);
|
|
}
|
|
if (!this.running) {
|
|
return;
|
|
}
|
|
var old_state = this.state;
|
|
this.state = newState;
|
|
var self = this;
|
|
MatrixClientPeg.get().setPresence(this.state).done(function() {
|
|
console.log("Presence: %s", newState);
|
|
}, function(err) {
|
|
console.error("Failed to set presence: %s", err);
|
|
self.state = old_state;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Callback called when the user made no action on the page for UNAVAILABLE_TIME ms.
|
|
* @private
|
|
*/
|
|
_onUnavailableTimerFire() {
|
|
this.setState("unavailable");
|
|
}
|
|
|
|
_onUserActivity() {
|
|
this._resetTimer();
|
|
}
|
|
|
|
/**
|
|
* Callback called when the user made an action on the page
|
|
* @private
|
|
*/
|
|
_resetTimer() {
|
|
var self = this;
|
|
this.setState("online");
|
|
// Re-arm the timer
|
|
clearTimeout(this.timer);
|
|
this.timer = setTimeout(function() {
|
|
self._onUnavailableTimerFire();
|
|
}, UNAVAILABLE_TIME_MS);
|
|
}
|
|
}
|
|
|
|
module.exports = new Presence();
|