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player.js
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player.js
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function mgcPl_InsertHtmlAndCSS() {
var css = document.createElement("style");
css.type = "text/css";
css.innerHTML = `#mgcPlFrame { position: fixed; top: 100px; left: ${window.innerWidth -
400 -
30}px; height: 300px; background-color: black; max-width: 400px;`;
if (!currentlyEnabledOptions.has("megucaplayerOption"))
css.innerHTML += " display: none;";
css.innerHTML +=
" } .mgcPlPlaylist{ width: 100%; height: 85%; } .mgcPlControls { height: 20px; width: 80px; } .mgcPlOptions { display: flex; flex: 1; justify-content: center; width: 100%; } .mgcPlTitle { color: white; padding: 0; margin: 0; width: 100%; text-align: center; } .mgcPlSliders { display: flex; margin: 0 5px; } .mgcPlSeeker { flex: 2; margin: 5px 5px; color: white; } .mgcPlVolume { flex: 1; margin: 5px 5px; color: white; }";
document.head.appendChild(css);
var newdiv = document.createElement("div");
newdiv.innerHTML =
'<div id="mgcPlFrame"> <div class="mgcPlOptions2"> <div draggable="true" id="mgcPldragArea"> <p class="mgcPlTitle" id="mgcPlTitle">MegucaPlayer</p> <div class="mgcPlOptions"> <button class="mgcPlControls" id="mgcPlPrevBut">prev</button> <button class="mgcPlControls" id="mgcPlStopBut">stop</button> <button class="mgcPlControls" id="mgcPlPlayBut">play/pause</button> <button class="mgcPlControls" id="mgcPlNextBut">next</button> </div> </div> <div class="mgcPlSliders"> <label class="mgcPlSeeker">Seeker: </label> <label class="mgcPlVolume">Volume: </label> </div> <div class="mgcPlSliders"> <input type="range" min="0" max="1" value="0" class="mgcPlSeeker" id="mgcPlSeekerSlider"> <input type="range" min="0" max="100" value="100" class="mgcPlVolume" id="mgcPlVolumeSlider"> </div> </div> <select class="mgcPlPlaylist" multiple id="megucaplaylist"> </select> </div>';
document.body.appendChild(newdiv);
}
function mgcPl_optionClicked() {
if (document.getElementById("megucaplayerOption").checked) {
// Load songs and show
var frame = document.getElementById("mgcPlFrame");
frame.style.display = "unset";
frame.style.top = "100px";
frame.style.left = `${window.innerWidth - 400 - 30}px`;
mgcPl_seekerBar_updater = setInterval(mgcPl_updateSeekerBar, 1000);
if (mgcPl_currentIndex >= 0)
document.getElementById(
"megucaplaylist"
).selectedIndex = mgcPl_currentIndex;
} else {
document.getElementById("mgcPlFrame").style.display = "none";
clearInterval(mgcPl_seekerBar_updater);
}
}
var mgcPl_offset = [];
var mgcPl_songs = [];
var mgcPl_meguca_player;
var mgcPl_currentIndex = -1;
var mgcPl_volume = 1.0;
var mgcPl_seekerBar_updater;
function mgcPl_allowDrop(ev) {
ev.preventDefault();
ev.dataTransfer.dropEffect = "move";
}
function mgcPl_drag(ev) {
var frame = ev.target.parentNode.parentNode;
ev.dataTransfer.setData("id", frame.id);
var style = window.getComputedStyle(frame, null);
mgcPl_offset[0] = parseInt(style.getPropertyValue("left"), 10) - ev.clientX;
mgcPl_offset[1] = parseInt(style.getPropertyValue("top"), 10) - ev.clientY;
frame.style.opacity = "0.6"; // this / e.target is the source node.
}
function mgcPl_drop(ev) {
ev.preventDefault();
var data = ev.dataTransfer.getData("id");
var thingy = document.getElementById(data);
thingy.style.left = ev.clientX + parseInt(mgcPl_offset[0], 10) + "px";
thingy.style.top = ev.clientY + parseInt(mgcPl_offset[1], 10) + "px";
thingy.style.opacity = "1";
}
function mgcPl_playSelected() {
mgcPl_play(document.getElementById("megucaplaylist").selectedIndex);
}
function mgcPl_play(selectedIndex) {
// if different song, setups and play
if (selectedIndex != mgcPl_currentIndex) {
mgcPl_killPlayer();
mgcPl_meguca_player = new Audio(mgcPl_songs[selectedIndex].link);
mgcPl_currentIndex = selectedIndex;
mgcPl_meguca_player.addEventListener("ended", function() {
mgcPl_playSong(1);
});
mgcPl_meguca_player.volume = mgcPl_volume;
// Seeker
var seeker = document.getElementById("mgcPlSeekerSlider");
seeker.min = 0;
seeker.max = mgcPl_convertLengthToSecs(mgcPl_songs[selectedIndex].duration);
seeker.value = 0;
} else if (!mgcPl_meguca_player.paused) {
// if just pausing, pause and return;
document.getElementById(
"mgcPlTitle"
).innerHTML = `MegucaPlayer (paused) | ${mgcPl_songs[selectedIndex].name}`;
mgcPl_meguca_player.pause();
return;
}
document.getElementById(
"mgcPlTitle"
).innerHTML = `MegucaPlayer | ${mgcPl_songs[selectedIndex].name}`;
mgcPl_meguca_player.play();
}
function mgcPl_stopPlayer() {
if (mgcPl_meguca_player === null || mgcPl_meguca_player === undefined) return;
mgcPl_meguca_player.pause();
mgcPl_meguca_player.currentTime = 0;
}
function mgcPl_playSong(variation) {
if (mgcPl_meguca_player !== null && mgcPl_meguca_player !== undefined) {
mgcPl_meguca_player.pause();
mgcPl_meguca_player.src = "";
}
var nextIndex = (mgcPl_currentIndex + variation) % mgcPl_songs.length;
document.getElementById("megucaplaylist").selectedIndex = nextIndex;
mgcPl_play(nextIndex);
}
function mgcPl_killPlayer() {
if (mgcPl_meguca_player !== null && mgcPl_meguca_player !== undefined) {
mgcPl_meguca_player.pause();
mgcPl_meguca_player.src = "";
}
}
function mgcPl_fetchAllSongs() {
var fileinfos = document.getElementsByTagName("figcaption");
for (var i = 0; i < fileinfos.length; i++) {
mgcPl_addNewSong(fileinfos[i]);
}
}
function mgcPl_addNewSong(figcaption) {
if (figcaption === null || figcaption === undefined) return;
var link = figcaption.children[3].href;
// Small hack to avoid adding songs twice due to the observers
if (
mgcPl_songs.length > 0 &&
link === mgcPl_songs[mgcPl_songs.length - 1].link
)
return;
if (
link.endsWith(".mp3") ||
link.endsWith(".flac") ||
link.endsWith(".mp4") ||
link.endsWith(".ogg")
) {
var songinfo = figcaption.children[2];
// Let's all miss the times of when lat was organized
// var artistSpan = songinfo.getElementsByClassName("media-artist")[0];
// var titleSpan = songinfo.getElementsByClassName("media-title")[0];
// var durationSpan = songinfo.getElementsByClassName("media-length")[0];
// If songInfo has more than 4 children, the penultimate will be artist and the last title
const artistSpan =
songinfo.children.length > 4
? songinfo.children[songinfo.children.length - 2]
: undefined;
const titleSpan =
songinfo.children.length > 4
? songinfo.children[songinfo.children.length - 1]
: undefined;
const durationSpan = songinfo.children[1];
var name = "";
if (artistSpan !== undefined && artistSpan.innerHTML !== "")
name = artistSpan.innerHTML + " - "; // media artist
if (titleSpan !== undefined && titleSpan.innerHTML !== "")
name += titleSpan.innerHTML; // title
if (name === "") name = figcaption.children[3].download; // download filename
var duration = "00:00";
if (durationSpan !== undefined) duration = durationSpan.innerHTML; // duration
mgcPl_songs.push({ name, duration, link });
var newOp = document.createElement("option");
var songInfo = document.createTextNode(duration + " | " + name);
newOp.appendChild(songInfo);
var playlist = document.getElementById("megucaplaylist");
playlist.appendChild(newOp);
}
}
function mgcPl_setupPlaylist() {
mgcPl_InsertHtmlAndCSS();
var dm = document.getElementById("mgcPldragArea");
dm.addEventListener("dragstart", mgcPl_drag, false);
document.body.addEventListener("dragover", mgcPl_allowDrop, false);
document.body.addEventListener("drop", mgcPl_drop, false);
// buttons
document.getElementById("mgcPlPrevBut").addEventListener("click", function() {
mgcPl_playSong(-1);
});
document.getElementById("mgcPlStopBut").addEventListener("click", function() {
mgcPl_stopPlayer();
});
document.getElementById("mgcPlPlayBut").addEventListener("click", function() {
mgcPl_playSelected();
});
document.getElementById("mgcPlNextBut").addEventListener("click", function() {
mgcPl_playSong(1);
});
document
.getElementById("megucaplaylist")
.addEventListener("dblclick", function() {
mgcPl_playSelected();
});
// sliders
var volumeSlider = document.getElementById("mgcPlVolumeSlider");
volumeSlider.addEventListener("input", function() {
mgcPl_updateVolume(this.value);
});
var seekerSlider = document.getElementById("mgcPlSeekerSlider");
seekerSlider.addEventListener("input", function() {
mgcPl_seekTo(this.value);
});
if (currentlyEnabledOptions.has("megucaplayerOption"))
mgcPl_seekerBar_updater = setInterval(mgcPl_updateSeekerBar, 1000);
mgcPl_fetchAllSongs();
}
function mgcPl_updateVolume(volume) {
mgcPl_volume = volume / 100.0;
if (mgcPl_meguca_player !== null && mgcPl_meguca_player !== undefined)
mgcPl_meguca_player.volume = volume / 100.0;
}
function mgcPl_seekTo(time) {
if (mgcPl_meguca_player !== null && mgcPl_meguca_player !== undefined)
mgcPl_meguca_player.currentTime = time;
}
function mgcPl_convertLengthToSecs(string) {
const midSign = string.indexOf(":");
const minutes = parseInt(string.substring(0, midSign));
const seconds = parseInt(string.substring(midSign + 1));
return minutes * 60 + seconds;
}
function mgcPl_updateSeekerBar() {
var slider = document.getElementById("mgcPlSeekerSlider");
if (mgcPl_meguca_player === null || mgcPl_meguca_player === undefined)
slider.value = 0;
else slider.value = mgcPl_meguca_player.currentTime;
}