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/*
* Beamer Viewer, a web-based PDF presentation viewer
* Copyright 2018-2024 Pacien TRAN-GIRARD
* SPDX-License-Identifier: EUPL-1.2
*/
"use strict";
class Timer {
constructor(window) {
this.display = window.document.getElementById("timer-value");
this.carryoverMs = 0; // saved on pause
this.runningStartTs = null; // null if paused
window.document.getElementById("timer-pause").addEventListener("click", event => {
event.stopPropagation();
this._startStop();
});
window.document.getElementById("timer-reset").addEventListener("click", event => {
event.stopPropagation();
this._reset();
});
setInterval(() => this._refreshTimer(), 1000);
this._toggleDisplay(false);
this._setDisplay(0);
window.document.getElementById("timer").classList.remove("hidden");
}
start() {
if (this.runningStartTs != null) return;
this.runningStartTs = Date.now();
this._toggleDisplay(true);
}
_stop() {
if (this.runningStartTs == null) return;
this.carryoverMs += Date.now() - this.runningStartTs;
this.runningStartTs = null;
this._toggleDisplay(false);
}
_startStop() {
if (this.runningStartTs == null)
this.start();
else
this._stop();
this._refreshTimer();
}
_reset() {
this.carryoverMs = 0;
if (this.runningStartTs != null) this.runningStartTs = Date.now();
this._setDisplay(0);
}
_refreshTimer() {
if (this.runningStartTs == null) return;
const timeDeltaMs = Date.now() - this.runningStartTs + this.carryoverMs;
this._setDisplay(Math.floor(timeDeltaMs / 1000));
}
_setDisplay(seconds) {
const dateObj = new Date(null);
dateObj.setSeconds(seconds);
this.display.textContent = dateObj.toISOString().slice(11, 11+8);
}
_toggleDisplay(active) {
if (active)
this.display.classList.remove("timer-paused");
else
this.display.classList.add("timer-paused");
}
}
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