b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
108 lines
2.8 KiB
JavaScript
Executable file
108 lines
2.8 KiB
JavaScript
Executable file
define(function(require, exports, module) {
|
|
'use strict';
|
|
|
|
// this module abstracts minute and day changes, it should be used by all the
|
|
// views that needs to listen for time changes (ie. update current time/date).
|
|
// listeners are enabled/disabled when the document visibility changes,
|
|
// reducing battery usage and making sure we always display the proper value.
|
|
// ---
|
|
// XXX: we don't listen to moztimechange here because the app forces a restart
|
|
// when the time changes; even if the app did not restart we would still need
|
|
// to trigger a refresh of most of the views (timezone affects the way we
|
|
// busytimes are rendered in all the views, even the view/edit event views)
|
|
// see: https://bugzilla.mozilla.org/show_bug.cgi?id=1093016#c9
|
|
|
|
var EventEmitter2 = require('ext/eventemitter2');
|
|
|
|
exports = module.exports = new EventEmitter2();
|
|
|
|
exports.on = function() {
|
|
EventEmitter2.prototype.on.apply(this, arguments);
|
|
this._start();
|
|
};
|
|
|
|
exports.once = function() {
|
|
EventEmitter2.prototype.once.apply(this, arguments);
|
|
this._start();
|
|
};
|
|
|
|
exports.off = function() {
|
|
EventEmitter2.prototype.off.apply(this, arguments);
|
|
this._autoStop();
|
|
};
|
|
|
|
exports.removeAllListeners = function() {
|
|
EventEmitter2.prototype.removeAllListeners.apply(this, arguments);
|
|
this._autoStop();
|
|
};
|
|
|
|
exports._autoStop = function() {
|
|
if (!this._hasListeners()) {
|
|
this._stop();
|
|
}
|
|
};
|
|
|
|
exports._hasListeners = function() {
|
|
return this.listeners('day').length > 0 ||
|
|
this.listeners('minute').length > 0;
|
|
};
|
|
|
|
exports._timeout = null;
|
|
exports._prevTick = null;
|
|
|
|
exports._start = function() {
|
|
if (this._timeout || !this._hasListeners()) {
|
|
return;
|
|
}
|
|
this._prevTick = new Date();
|
|
this._timeout = setTimeout(this._tick, this._nextMinute());
|
|
};
|
|
|
|
exports._stop = function() {
|
|
if (this._timeout) {
|
|
window.clearTimeout(this._timeout);
|
|
this._timeout = null;
|
|
}
|
|
};
|
|
|
|
exports._tick = function() {
|
|
this._stop();
|
|
this._exec();
|
|
this._start();
|
|
}.bind(exports);
|
|
|
|
exports._nextMinute = function() {
|
|
var now = new Date();
|
|
return (60 - now.getSeconds()) * 1000;
|
|
};
|
|
|
|
exports._exec = function() {
|
|
var now = new Date();
|
|
var prev = this._prevTick;
|
|
if (prev.getMinutes() !== now.getMinutes()) {
|
|
this.emit('minute');
|
|
}
|
|
if (prev.getDate() !== now.getDate()) {
|
|
this.emit('day');
|
|
}
|
|
};
|
|
|
|
exports.init = function() {
|
|
document.addEventListener('visibilitychange', () => {
|
|
exports._toggleStatusOnVisibilityChange(document.hidden);
|
|
});
|
|
exports._start();
|
|
};
|
|
|
|
exports._toggleStatusOnVisibilityChange = function(hidden) {
|
|
// we trigger an update as soon as document is visible to avoid issues with
|
|
// timer not being fired (eg. timer was disabled and day/minute changed while
|
|
// app was hidden)
|
|
if (!hidden) {
|
|
exports._exec();
|
|
}
|
|
var method = hidden ? '_stop' : '_start';
|
|
exports[method]();
|
|
};
|
|
|
|
});
|