Michael Fabian 'Xaymar' Dirks
435 lines
13 KiB
JavaScript
435 lines
13 KiB
JavaScript
'use strict';
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import("./HTMLMediaElement.mjs");
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async function xmr_media_lazyload_perform(element) {
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let content = element.querySelector("noscript");
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if (content) {
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element.innerHTML = content.innerText;
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}
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}
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async function xmr_media_lazyload_initialize() {
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// Figure out what to load.
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let elements = document.querySelectorAll(".block-media > [data-lazyload]");
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let stack = Array.from(elements);
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console.debug("Lazily loading " + stack.length + " elements...");
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// Add a lazyloading handler to all entries.
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for (let el of stack) {
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xmr_media_lazyload_perform(el);
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}
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}
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async function xmr_initialize_player(el) {
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let media = el.querySelector("video");
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if (!media)
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el.querySelector("audio");
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let play_pause = el.querySelector(".play");
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{ // Play/Pause
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play_pause.update = function() {
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if (media.paused) {
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play_pause.classList.remove("playing");
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play_pause.dataset.symbol = "⏵";
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play_pause.ariaLabel = "Play";
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} else if (media.error || media.ended) {
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play_pause.classList.remove("playing");
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play_pause.dataset.symbol = "⏹";
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play_pause.ariaLabel = "Stopped";
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} else {
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play_pause.classList.add("playing");
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play_pause.dataset.symbol = "⏸";
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play_pause.ariaLabel = "Pause";
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}
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play_pause.innerText = play_pause.dataset.symbol;
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}
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play_pause.addEventListener("click", () => {
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if (media.paused) {
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media.play();
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} else {
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media.pause();
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}
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});
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play_pause.addEventListener("keydown", (ev) => {
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if (ev.isComposing || ev.keyCode === 229) {
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// Ignore IME compositing.
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return;
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}
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if (["Space", "Enter"].includes(ev.code)) {
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play_pause.click();
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ev.preventDefault();
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ev.stopPropagation();
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}
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});
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media.addEventListener("play", () => { play_pause.update(); });
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media.addEventListener("pause", () => { play_pause.update(); });
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media.addEventListener("ended", () => { play_pause.update(); });
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media.addEventListener("error", () => { play_pause.update(); });
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play_pause.update();
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}
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let playback_time = el.querySelector(".time");
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{ // Time
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playback_time.update = function() {
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function formatSeconds(seconds, with_ms, with_minutes, with_hour) {
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let result = [];
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if (isFinite(seconds) && !isNaN(seconds)) {
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let tainted_seconds = seconds % 60;
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let pure_seconds = Math.floor(seconds % 60);
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let tainted_minutes = ((seconds - pure_seconds) / 60);
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let pure_minutes = Math.floor(tainted_minutes % 60);
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let pure_hours = Math.floor((tainted_minutes - pure_minutes) / 60);
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result.unshift(`${pure_seconds.toString(10).padStart(2, '0')}`);
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if (with_ms) {
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result[0] = `${result[0]}.${Math.floor((tainted_seconds % 1) * 100).toString(10).padStart(2, '0')}`
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}
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if ((with_minutes === true) || ((with_minutes === undefined) && (pure_minutes > 0))) {
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result[0] = result[0].padStart(2, '0');
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result.unshift(`${pure_minutes.toString(10)}`);
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}
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if ((with_hour === true) || ((with_hour === undefined) && (pure_hours > 0))) {
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result[0] = result[0].padStart(2, '0');
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result.unshift(`${pure_hours.toString(10)}`);
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}
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}
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return result;
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}
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let duration = formatSeconds(media.duration, true);
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let current = formatSeconds(media.currentTime, true, duration.length >= 2, duration.length >= 3);
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for (let idx in duration) {
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current[idx].padStart(duration[idx].length, '0');
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}
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if (duration.length > 0) {
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playback_time.innerText = `${current.join(':')} / ${duration.join(':')}`;
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} else {
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playback_time.innerText = `${current.join(':')}`;
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}
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}
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media.addEventListener("timeupdate", () => { playback_time.update(); });
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media.addEventListener("durationupdate", () => { playback_progress.update(); });
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media.addEventListener("loadedmetadata", () => { playback_time.update(); });
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playback_time.update();
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}
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let playback_progress = el.querySelector(".progress");
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{ // Progress
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playback_progress.update = function() {
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playback_progress.disabled = !media.seekable;
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playback_progress.min = 0;
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playback_progress.max = media.duration * 100;
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playback_progress.value = media.currentTime * 100;
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}
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playback_progress.addEventListener("input", () => {
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if (isFinite(media.duration)) {
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media.currentTime = parseInt(playback_progress.value, 10) / 100;
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}
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});
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media.addEventListener("timeupdate", () => { playback_progress.update(); });
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media.addEventListener("durationupdate", () => { playback_progress.update(); });
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media.addEventListener("loadeddata", () => { playback_progress.update(); });
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media.addEventListener("loadedmetadata", () => { playback_progress.update(); });
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playback_progress.update();
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}
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let audio_mute = el.querySelector(".mute");
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{ // Mute
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audio_mute.update = function() {
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if (media.muted) {
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audio_mute.classList.add("muted");
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audio_mute.dataset.symbol = "🔇";
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audio_mute.ariaLabel = "Unmute";
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} else {
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audio_mute.classList.remove("muted");
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if (media.volume > 0.5) {
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audio_mute.dataset.symbol = "🔊";
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} else if (media.volume > 0.25) {
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audio_mute.dataset.symbol = "🔉";
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} else {
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audio_mute.dataset.symbol = "🔈";
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}
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audio_mute.ariaLabel = `Volume: ${(media.volume * 100).toString(10)}%`;
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}
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audio_mute.innerText = audio_mute.dataset.symbol;
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}
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audio_mute.addEventListener("click", () => {
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media.muted = !media.muted;
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});
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audio_mute.addEventListener("keydown", (ev) => {
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if (ev.isComposing || ev.keyCode === 229) {
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// Ignore IME compositing.
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return;
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}
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if (["Space", "Enter"].includes(ev.code)) {
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audio_mute.click();
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ev.preventDefault();
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ev.stopPropagation();
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}
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});
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media.addEventListener("volumechange", () => {
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audio_mute.update();
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});
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audio_mute.update();
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}
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let audio_volume = el.querySelector(".volume");
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{ // Volume
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audio_volume.min = 0;
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audio_volume.max = 2147483647;
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audio_volume.update = function() {
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let min = parseInt(audio_volume.min, 10);
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let max = parseInt(audio_volume.max, 10);
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let dlt = max - min;
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audio_volume.value = (media.logVolume * dlt) + min;
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audio_volume.ariaLabel = `Volume: ${(media.volume * 100).toString(10)}%`;
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if (media.muted) {
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audio_volume.classList.add("muted");
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} else {
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audio_volume.classList.remove("muted");
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}
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}
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audio_volume.addEventListener("input", () => {
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let min = parseInt(audio_volume.min, 10);
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let max = parseInt(audio_volume.max, 10);
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let val = parseInt(audio_volume.value, 10);
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let dlt = max - min;
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let vol = (val + min) / dlt;
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media.logVolume = vol;
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media.muted = (media.volume < 0.01);
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});
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media.addEventListener("volumechange", () => { audio_volume.update(); });
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audio_volume.update();
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}
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let fullscreen = el.querySelector(".fullscreen");
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{ // Fullscreen
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fullscreen.update = function() {
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if (document.fullscreenElement) {
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fullscreen.dataset.symbol = "\u200F⛶";
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} else {
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fullscreen.dataset.symbol = "⛶";
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}
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fullscreen.innerText = fullscreen.dataset.symbol;
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};
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fullscreen.addEventListener("click", () => {
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if (document.fullscreenElement) {
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document.exitFullscreen();
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} else {
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el.requestFullscreen();
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}
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});
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fullscreen.addEventListener("keydown", (ev) => {
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if (ev.isComposing || ev.keyCode === 229) {
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// Ignore IME compositing.
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return;
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}
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if (["Space", "Enter"].includes(ev.code)) {
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fullscreen.click();
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ev.preventDefault();
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}
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})
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el.addEventListener("fullscreenchange", () => {
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fullscreen.update();
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});
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fullscreen.update();
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}
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let variant = el.querySelector(".variant");
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{ // Variants
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variant.update = function() {
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// Store current state and pause.
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let paused = media.paused;
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let muted = media.muted;
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let volume = media.volume;
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let time = media.currentTime;
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media.pause();
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play_pause.update();
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// Tell the media source to begin loading.
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media.src = variant.value;
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media.load();
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media.currentTime = time;
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media.addEventListener("canplay", () => {
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media.currentTime = time;
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media.volume = volume;
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media.muted = muted;
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if (paused) {
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media.pause();
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} else {
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media.play();
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}
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play_pause.update();
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}, {
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"once": true
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})
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}
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variant.addEventListener("input", () => { variant.update(); });
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variant.addEventListener("value", () => { variant.update(); });
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// Variants - Add options from available sources.
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let sources = el.querySelectorAll("source");
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for (let k of sources) {
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let option = document.createElement("option");
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option.value = k.src;
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option.textContent = k.title;
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variant.appendChild(option);
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}
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variant.value = media.currentSrc;
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}
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{ // Keyboard/Mouse Controls
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el.addEventListener("keydown", (ev) => {
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if (ev.isComposing || ev.keyCode === 229) {
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// Ignore IME compositing.
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return;
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}
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if (["f", "F"].includes(ev.key)) {
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fullscreen.click();
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ev.preventDefault();
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ev.stopPropagation();
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} else if (["m", "M"].includes(ev.key)) {
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audio_mute.click();
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "Space") {
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play_pause.click();
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "Home") {
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media.currentTime = 0;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "ArrowLeft") {
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media.currentTime -= 5;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "Comma") {
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media.currentTime -= .1;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "Period") {
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media.currentTime += .1;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "ArrowRight") {
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media.currentTime += 5;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "End") {
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media.currentTime = media.duration;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "ArrowUp") {
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media.logVolume = Math.max(0, Math.min(media.logVolume + 0.05, 1.0));
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "ArrowDown") {
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media.logVolume = Math.max(0, Math.min(media.logVolume - 0.05, 1.0));
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ev.preventDefault();
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ev.stopPropagation();
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} else if (["p", "P"].includes(ev.key)) {
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media.preservesPitch = !media.preservesPitch;
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "PageDown") {
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media.playbackRate = Math.max(0.25, Math.min(media.playbackRate - 0.05, 4.0));
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ev.preventDefault();
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ev.stopPropagation();
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} else if (ev.code === "PageUp") {
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media.playbackRate = Math.max(0.25, Math.min(media.playbackRate + 0.05, 4.0));
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ev.preventDefault();
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ev.stopPropagation();
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} else if (["r", "R"].includes(ev.key)) {
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media.playbackRate = 1.0;
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ev.preventDefault();
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ev.stopPropagation();
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}
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});
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media.addEventListener("click", () => {
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play_pause.click();
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});
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media.addEventListener("dblclick", () => {
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fullscreen.click();
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})
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}
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{ // Hide/Show controls
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el.showOverlay = function() {
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el.cancelHideOverlay();
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el.classList.remove("hide");
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}
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el.hideOverlay = function() {
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if (!media.paused && !media.ended && !media.error) {
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el.classList.add("hide");
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}
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}
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el.delayHideOverlay = function() {
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el.cancelHideOverlay();
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el.timer = setTimeout(() => { el.hideOverlay(); }, 2500);
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}
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el.cancelHideOverlay = function() {
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if (el.timer) {
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clearTimeout(el.timer);
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}
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}
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el.addEventListener("mousemove", () => {
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el.showOverlay();
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if (!media.paused && !media.ended && !media.error) {
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el.delayHideOverlay();
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}
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});
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el.hideOverlay();
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}
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{ // Show/Hide Audio controls without audio.
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function checkAudioPresence() {
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let hasAudio = Boolean(media.mozHasAudio)
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|| Boolean(media.webkitAudioDecodedByteCount)
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|| Boolean(media.audioTracks && media.audioTracks.length);
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audio_mute.style.display = hasAudio ? "" : "none";
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audio_volume.style.display = hasAudio ? "" : "none";
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}
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media.addEventListener("loadedmetadata", () => { checkAudioPresence() });
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media.addEventListener("loadeddata", () => { checkAudioPresence() });
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checkAudioPresence();
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}
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// Signal the browser to try and load some information.
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media.load();
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}
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async function xmr_initialize_players() {
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// Figure out what to initialize.
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let elements = document.querySelectorAll(".block-media.player");
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let stack = Array.from(elements);
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console.debug("Initializing " + stack.length + " players...");
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// Add a lazyloading handler to all entries.
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for (let el of stack) {
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xmr_initialize_player(el);
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}
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}
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(function() {
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'use strict';
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// Support for Mobile Devices
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document.querySelector("#navigation-toggle").addEventListener("click", (ev) => {
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document.querySelector("#header #navigation").classList.toggle("open");
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});
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// Lazily load Media
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xmr_media_lazyload_initialize();
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// Initialize media player.
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xmr_initialize_players();
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})();
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