From b81d1edea2985a7857c99bdf13ca88e39b178ba2 Mon Sep 17 00:00:00 2001
From: Ondrej Zara <ondrej.zara@gmail.com>
Date: Mon, 9 Mar 2020 14:26:39 +0100
Subject: [PATCH] selection wip

---
 app/app.css             | 202 +++++++++++++++++++++++++++-------------
 app/css/app.less        |  19 +++-
 app/css/commands.less   |   0
 app/css/main.less       |   4 -
 app/css/menu.less       |  61 ++++++++----
 app/css/mixins.less     |   8 ++
 app/css/song.less       |  30 ++++++
 app/css/yt.less         |   2 +-
 app/index.html          |   7 +-
 app/js/app.js           |  46 ++++-----
 app/js/component.js     |   5 +-
 app/js/fs.js            |   3 -
 app/js/lib/selection.js |  58 ++++++++++++
 app/js/lib/ui.js        |   5 +-
 app/js/player.js        |  18 ++--
 app/js/queue.js         |  68 ++++++++++++--
 app/js/yt.js            | 101 ++++++++++----------
 17 files changed, 452 insertions(+), 185 deletions(-)
 create mode 100644 app/css/commands.less
 create mode 100644 app/css/song.less
 create mode 100644 app/js/lib/selection.js

diff --git a/app/app.css b/app/app.css
index 306335a..0c44f8b 100644
--- a/app/app.css
+++ b/app/app.css
@@ -9,6 +9,10 @@ html {
 body {
   margin: 0;
 }
+main {
+  flex-grow: 1;
+  overflow: auto;
+}
 cyp-app {
   flex-direction: column;
   box-sizing: border-box;
@@ -27,9 +31,19 @@ cyp-app:not([hidden]) {
 }
 header,
 footer {
+  flex-shrink: 0;
   z-index: 1;
   box-shadow: var(--box-shadow);
 }
+footer {
+  position: relative;
+  height: 56px;
+}
+@media (max-width: 480px) {
+  footer {
+    height: 40px;
+  }
+}
 input,
 select,
 button {
@@ -108,6 +122,12 @@ select {
 .multiline h2 {
   font-weight: normal;
 }
+.selectable {
+  border-left: 4px solid transparent;
+}
+.selectable.selected {
+  border-left-color: var(--primary);
+}
 x-range {
   --thumb-size: 8px;
   --thumb-color: #fff;
@@ -170,49 +190,6 @@ x-range[disabled] {
 x-range:not([disabled]) .-thumb:hover {
   background-color: var(--thumb-hover-color);
 }
-main {
-  flex-grow: 1;
-  overflow: auto;
-}
-cyp-menu {
-  flex-direction: row;
-  align-items: center;
-  height: 56px;
-}
-cyp-menu:not([hidden]) {
-  display: flex;
-}
-cyp-menu button {
-  flex: 1 0 0;
-  height: 100%;
-  flex-direction: column;
-  align-items: center;
-  padding-top: 4px;
-  border-top: 4px solid transparent;
-}
-cyp-menu button:not([hidden]) {
-  display: flex;
-}
-cyp-menu button .icon {
-  margin-right: var(--icon-spacing);
-}
-cyp-menu button.active {
-  border-top-color: var(--primary);
-  color: var(--primary);
-  background-color: rgb(var(--primary-raw), 0.1);
-}
-@media (max-width: 480px) {
-  cyp-menu button {
-    flex-direction: row;
-    justify-content: center;
-  }
-  cyp-menu button:not([data-for=queue]) .icon {
-    margin-right: 0;
-  }
-  cyp-menu button span:not([id]) {
-    display: none;
-  }
-}
 cyp-player {
   flex-direction: row;
   align-items: center;
@@ -693,80 +670,80 @@ cyp-playlists .info:not([hidden]) {
 cyp-playlists .info h2 {
   font-weight: normal;
 }
-#yt header {
+cyp-yt header {
   flex-direction: row;
   align-items: center;
   padding: var(--spacing);
 }
-#yt header:not([hidden]) {
+cyp-yt header:not([hidden]) {
   display: flex;
 }
-#yt header button {
+cyp-yt header button {
   font-size: var(--font-size-large);
   font-weight: bold;
   overflow: hidden;
 }
-#yt header button .icon {
+cyp-yt header button .icon {
   margin-right: var(--icon-spacing);
 }
-#yt ul {
+cyp-yt ul {
   flex-grow: 1;
   overflow: auto;
   list-style: none;
   margin: 0;
   padding: 0;
 }
-#yt li {
+cyp-yt li {
   flex-direction: row;
   align-items: center;
 }
-#yt li:not([hidden]) {
+cyp-yt li:not([hidden]) {
   display: flex;
 }
-#yt li .info {
+cyp-yt li .info {
   flex-grow: 1;
   overflow: hidden;
 }
-#yt li .info .icon {
+cyp-yt li .info .icon {
   color: var(--primary);
   margin-right: var(--icon-spacing);
   filter: drop-shadow(var(--text-shadow));
 }
-#yt li .info h2 {
+cyp-yt li .info h2 {
   font-size: var(--font-size-large);
   margin: 0;
 }
-#yt li .info h2,
-#yt li .info div {
+cyp-yt li .info h2,
+cyp-yt li .info div {
   white-space: nowrap;
   overflow: hidden;
   text-overflow: ellipsis;
 }
-#yt li:not(.has-art) {
+cyp-yt li:not(.has-art) {
   padding: 8px;
 }
-#yt li button .icon {
+cyp-yt li button .icon {
   width: 32px;
 }
-#yt li:nth-child(odd) {
+cyp-yt li:nth-child(odd) {
   background-color: var(--bg-alt);
 }
-#yt header {
+cyp-yt header {
   border-bottom: 1px solid var(--fg);
 }
-#yt header button + button {
+cyp-yt header button + button {
   margin-left: 16px;
 }
-#yt .clear {
+cyp-yt .clear {
   margin-left: auto;
 }
-#yt pre {
+cyp-yt pre {
   margin: 0.5em 0.5ch;
   flex-grow: 1;
   overflow: auto;
   white-space: pre-wrap;
 }
-#yt.pending header {
+cyp-yt.pending header {
   background-image: linear-gradient(var(--primary), var(--primary));
   background-repeat: no-repeat;
   background-size: 25% 4px;
@@ -896,3 +873,102 @@ cyp-app[color=limegreen] {
     --spacing: var(--icon-spacing);
   }
 }
+cyp-song {
+  border-left: 4px solid transparent;
+  flex-direction: row;
+  align-items: center;
+}
+cyp-song.selected {
+  border-left-color: var(--primary);
+}
+cyp-song:not([hidden]) {
+  display: flex;
+}
+cyp-song .info {
+  flex-grow: 1;
+  overflow: hidden;
+}
+cyp-song .info .icon {
+  color: var(--primary);
+  margin-right: var(--icon-spacing);
+  filter: drop-shadow(var(--text-shadow));
+}
+cyp-song .info h2 {
+  font-size: var(--font-size-large);
+  margin: 0;
+}
+cyp-song .info h2,
+cyp-song .info div {
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+cyp-song:nth-child(odd) {
+  background-color: var(--bg-alt);
+}
+cyp-song:not(.has-art) {
+  padding: 8px;
+}
+cyp-menu,
+cyp-commands {
+  flex-direction: row;
+  align-items: center;
+  height: 100%;
+}
+cyp-menu:not([hidden]),
+cyp-commands:not([hidden]) {
+  display: flex;
+}
+cyp-menu button,
+cyp-commands button {
+  height: 100%;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+}
+cyp-menu button:not([hidden]),
+cyp-commands button:not([hidden]) {
+  display: flex;
+}
+@media (max-width: 480px) {
+  cyp-menu button,
+  cyp-commands button {
+    flex-direction: row;
+  }
+  cyp-menu button span:not([id]),
+  cyp-commands button span:not([id]) {
+    display: none;
+  }
+}
+cyp-menu button {
+  flex: 1 0 0;
+  border-top: 4px solid transparent;
+  border-bottom: 4px solid transparent;
+}
+cyp-menu button .icon {
+  margin-right: var(--icon-spacing);
+}
+cyp-menu button.active {
+  border-top-color: var(--primary);
+  color: var(--primary);
+  background-color: rgb(var(--primary-raw), 0.1);
+}
+cyp-commands {
+  position: absolute;
+  left: 0;
+  top: 0;
+  width: 100%;
+  transition: top 300ms;
+  background-color: var(--bg);
+}
+cyp-commands[hidden] {
+  display: flex;
+  top: 100%;
+}
+cyp-commands button {
+  flex: 0 0 80px;
+}
+cyp-commands button.last {
+  order: 1;
+  margin-left: auto;
+}
diff --git a/app/css/app.less b/app/css/app.less
index 91b69c5..47b99db 100644
--- a/app/css/app.less
+++ b/app/css/app.less
@@ -8,6 +8,11 @@ body {
 	margin: 0;
 }
 
+main {
+	flex-grow: 1;
+	overflow: auto;
+}
+
 cyp-app {
 	.flex-column;
 
@@ -24,10 +29,19 @@ cyp-app {
 }
 
 header, footer {
+	flex-shrink: 0;
 	z-index: 1;
 	box-shadow: var(--box-shadow);
 }
 
+footer {
+	position: relative;
+	height: 56px;
+	@media (max-width: 480px) {
+		height: 40px;
+	}
+}
+
 input, select, button {
 	color: inherit;
 	font: inherit;
@@ -60,8 +74,6 @@ select {
 @import "icons.less";
 @import "mixins.less";
 @import "range.less";
-@import "main.less";
-@import "menu.less";
 @import "player.less";
 @import "component.less";
 @import "queue.less";
@@ -73,3 +85,6 @@ select {
 @import "search.less";
 @import "art.less";
 @import "variables.less";
+
+@import "song.less";
+@import "menu.less";
diff --git a/app/css/commands.less b/app/css/commands.less
new file mode 100644
index 0000000..e69de29
diff --git a/app/css/main.less b/app/css/main.less
index c676bbc..e69de29 100644
--- a/app/css/main.less
+++ b/app/css/main.less
@@ -1,4 +0,0 @@
-main {
-	flex-grow: 1;
-	overflow: auto;
-}
diff --git a/app/css/menu.less b/app/css/menu.less
index c96797a..147aedf 100644
--- a/app/css/menu.less
+++ b/app/css/menu.less
@@ -1,33 +1,56 @@
-cyp-menu {
+cyp-menu, cyp-commands {
 	.flex-row;
-	height: 56px;
+	height: 100%;
 
 	button {
-		flex: 1 0 0;
 		height: 100%;
 
 		.flex-column;
 		align-items: center;
-		padding-top: 4px;
-
-		border-top: 4px solid transparent;
-
-		.icon {
-			margin-right: var(--icon-spacing);
-		}
-
-		&.active {
-			border-top-color: var(--primary);
-			color: var(--primary);
-			background-color: rgb(var(--primary-raw), 0.1);
-		}
+		justify-content: center;
 
 		@media (max-width: 480px) {
 			flex-direction: row;
-			justify-content: center;
-
-			&:not([data-for=queue]) .icon { margin-right: 0; }
 			span:not([id]) { display: none; }
 		}
 	}
 }
+
+cyp-menu button {
+	flex: 1 0 0;
+	border-top: 4px solid transparent;
+	border-bottom: 4px solid transparent;
+
+	.icon {
+		margin-right: var(--icon-spacing);
+	}
+
+	&.active {
+		border-top-color: var(--primary);
+		color: var(--primary);
+		background-color: rgb(var(--primary-raw), 0.1);
+	}
+}
+
+cyp-commands {
+	position: absolute;
+	left: 0;
+	top: 0;
+	width: 100%;
+	transition: top 300ms;
+
+	background-color: var(--bg);
+
+	&[hidden] {
+		display: flex;
+		top: 100%;
+	}
+
+	button {
+		flex: 0 0 80px;
+		&.last {
+			order: 1;
+			margin-left: auto;
+		}
+	}
+}
diff --git a/app/css/mixins.less b/app/css/mixins.less
index 7380221..676cac4 100644
--- a/app/css/mixins.less
+++ b/app/css/mixins.less
@@ -20,3 +20,11 @@
 
 	h2 { font-weight: normal; }
 }
+
+.selectable {
+	border-left: 4px solid transparent;
+
+	&.selected {
+		border-left-color: var(--primary);
+	}
+}
diff --git a/app/css/song.less b/app/css/song.less
new file mode 100644
index 0000000..c653445
--- /dev/null
+++ b/app/css/song.less
@@ -0,0 +1,30 @@
+cyp-song {
+	.selectable;
+	.flex-row;
+
+	.info {
+		flex-grow: 1;
+		overflow: hidden;
+
+		.icon {
+			color: var(--primary);
+			margin-right: var(--icon-spacing);
+			filter: drop-shadow(var(--text-shadow));
+		}
+
+		h2 {
+			font-size: var(--font-size-large);
+			margin: 0;
+		}
+
+		h2, div { .long-line; }
+	}
+
+	&:nth-child(odd) {
+		background-color: var(--bg-alt);
+	}
+
+	&:not(.has-art) {
+		padding: 8px;
+	}
+}
diff --git a/app/css/yt.less b/app/css/yt.less
index 5064771..b668a08 100644
--- a/app/css/yt.less
+++ b/app/css/yt.less
@@ -1,4 +1,4 @@
-#yt {
+cyp-yt {
 	.component;
 
 	header {
diff --git a/app/index.html b/app/index.html
index b4939de..94a2ca1 100644
--- a/app/index.html
+++ b/app/index.html
@@ -40,11 +40,12 @@
 		</header>
 		<main>
 			<cyp-queue>
+				<!--
 				<header>
 					<button class="clear" data-icon="close" title="Clear the queue"></button>
 					<button class="save" data-icon="content-save" title="Save the queue"></button>
 				</header>
-				<ul></ul>
+				-->
 			</cyp-queue>
 			<cyp-playlists>
 				<ul></ul>
@@ -57,14 +58,14 @@
 				<header></header>
 				<ul></ul>
 			</section>
-			<section id="yt">
+			<cyp-yt>
 				<header>
 					<button class="download" data-icon="download">Download</button>
 					<button class="search-download" data-icon="magnify">Search &amp; Download</button>
 					<button class="clear" data-icon="close">Clear</button>
 				</header>
 				<pre></pre>
-			</section>
+			</cyp-yt>
 			<cyp-settings>
 				<dl>
 					<dt>Theme</dt>
diff --git a/app/js/app.js b/app/js/app.js
index e16c3fb..3c75758 100644
--- a/app/js/app.js
+++ b/app/js/app.js
@@ -20,6 +20,16 @@ function initIcons() {
 	});
 }
 
+async function initMpd() {
+	try {
+		await mpd.init();
+		return mpd;
+	} catch (e) {
+		console.error(e);
+		return mpdMock;
+	}
+}
+
 class App extends HTMLElement {
 	static get observedAttributes() { return ["component"]; }
 
@@ -28,43 +38,33 @@ class App extends HTMLElement {
 
 		initIcons();
 
-		this._load();
+		this._mpdPromise = initMpd().then(mpd => this.mpd = mpd);
 	}
 
-	attributeChangedCallback(name, oldValue, newValue) {
-		switch (name) {
-			case "component":
-				const e = new CustomEvent("component-change");
-				this.dispatchEvent(e);
-			break;
-		}
-	}
-
-	async _load() {
-		try {
-			await mpd.init();
-			this.mpd = mpd;
-		} catch (e) {
-			console.error(e);
-			this.mpd = mpdMock;
-		}
-
+	async connectedCallback() {
 		const promises = ["cyp-player"].map(name => customElements.whenDefined(name));
+		promises.push(this._mpdPromise);
+
 		await Promise.all(promises);
 
 		this.dispatchEvent(new CustomEvent("load"));
 
 		const onHashChange = () => {
 			const hash = location.hash.substring(1);
-			this._activate(hash || "queue");
+			this.setAttribute("component", hash || "queue");
 		}
 		window.addEventListener("hashchange", onHashChange);
 		onHashChange();
 	}
 
-	_activate(what) {
-		location.hash = what;
-		this.setAttribute("component", what);
+	attributeChangedCallback(name, oldValue, newValue) {
+		switch (name) {
+			case "component":
+				location.hash = newValue;
+				const e = new CustomEvent("component-change");
+				this.dispatchEvent(e);
+			break;
+		}
 	}
 }
 
diff --git a/app/js/component.js b/app/js/component.js
index f0133e9..2c305c5 100644
--- a/app/js/component.js
+++ b/app/js/component.js
@@ -1,4 +1,4 @@
-const APP = "cyp-app";
+import Selection from "./lib/selection.js";
 
 export class HasApp extends HTMLElement {
 	get _app() { return this.closest("cyp-app"); }
@@ -8,7 +8,10 @@ export class HasApp extends HTMLElement {
 export default class Component extends HasApp {
 	constructor() {
 		super();
+		this.selection = new Selection(this);
+	}
 
+	connectedCallback() {
 		this._app.addEventListener("load", _ => this._onAppLoad());
 		this._app.addEventListener("component-change", _ => {
 			const component = this._app.getAttribute("component");
diff --git a/app/js/fs.js b/app/js/fs.js
index 81d0ee3..e56f4c8 100644
--- a/app/js/fs.js
+++ b/app/js/fs.js
@@ -1,8 +1,5 @@
-import * as app from "./app.js";
 import * as mpd from "./lib/mpd.js";
 import * as html from "./lib/html.js";
-import * as player from "./player.js";
-import * as format from "./lib/format.js";
 import * as ui from "./lib/ui.js";
 
 import Search from "./lib/search.js";
diff --git a/app/js/lib/selection.js b/app/js/lib/selection.js
new file mode 100644
index 0000000..decb8c2
--- /dev/null
+++ b/app/js/lib/selection.js
@@ -0,0 +1,58 @@
+import * as html from "./html.js";
+
+export default class Selection {
+	constructor(component) {
+		this._component = component;
+		this._items = new Set();
+		this._node = html.node("cyp-commands", {hidden:true});
+
+		const button = this.addCommand(_ => this.clear(), {icon:"close", label:"Clear"});
+		button.classList.add("last");
+	}
+
+	clear() {
+		const nodes = Array.from(this._items);
+		while (nodes.length) { this._remove(nodes.pop()); }
+	}
+
+	toggle(node) {
+		if (this._items.has(node)) {
+			this._remove(node);
+		} else {
+			this._add(node);
+		}
+	}
+
+	addCommand(cb, options) {
+		const button = html.button({icon:options.icon}, "", this._node);
+		html.node("span", {}, options.label, button);
+		button.addEventListener("click", _ => cb(this._items));
+		return button;
+	}
+
+	_add(node) {
+		const size = this._items.size;
+		this._items.add(node);
+		node.classList.add("selected");
+		if (size == 0) { this._show(); }
+	}
+
+	_remove(node) {
+		this._items.delete(node);
+		node.classList.remove("selected");
+		if (this._items.size == 0) { this._hide(); }
+
+	}
+
+	_show() {
+		const parent = this._component.closest("cyp-app").querySelector("footer");
+		parent.appendChild(this._node);
+		this._node.offsetWidth; // FIXME jde lepe?
+		this._node.hidden = false;
+	}
+
+	_hide() {
+		this._node.hidden = true;
+		this._node.remove();
+	}
+}
diff --git a/app/js/lib/ui.js b/app/js/lib/ui.js
index a7d4539..81ba532 100644
--- a/app/js/lib/ui.js
+++ b/app/js/lib/ui.js
@@ -86,11 +86,10 @@ function playButton(type, what, parent) {
 			await mpd.command("play");
 			pubsub.publish("queue-change");
 		}
-		player.update();
+		button.closest("cyp-app").querySelector("cyp-player").update(); // FIXME nejde to lepe?
 	});
 
 	return button;
-
 }
 
 function deleteButton(type, id, parent) {
@@ -108,7 +107,7 @@ function deleteButton(type, id, parent) {
 				await mpd.command(`deleteid ${id}`);
 				pubsub.publish("queue-change");
 			return;
-			case TYPE_PLAYLIST: 
+			case TYPE_PLAYLIST:
 				let ok = confirm(`Really delete playlist '${id}'?`);
 				if (!ok) { return; }
 				await mpd.command(`rm "${mpd.escape(id)}"`);
diff --git a/app/js/player.js b/app/js/player.js
index d4a180d..04b571c 100644
--- a/app/js/player.js
+++ b/app/js/player.js
@@ -14,8 +14,15 @@ class Player extends Component {
 		this._dom = this._initDOM();
 	}
 
+	async update() {
+		this._clearIdle();
+		const data = await this._mpd.status();
+		this._sync(data);
+		this._idle();
+	}
+
 	_onAppLoad() {
-		this._update();
+		this.update();
 	}
 
 	_initDOM() {
@@ -50,7 +57,7 @@ class Player extends Component {
 	}
 
 	_idle() {
-		this._idleTimeout = setTimeout(() => this._update(), DELAY);
+		this._idleTimeout = setTimeout(() => this.update(), DELAY);
 	}
 
 	_clearIdle() {
@@ -58,13 +65,6 @@ class Player extends Component {
 		this._idleTimeout = null;
 	}
 
-	async _update() {
-		this._clearIdle();
-		const data = await this._mpd.status();
-		this._sync(data);
-		this._idle();
-	}
-
 	_sync(data) {
 		const DOM = this._dom;
 		if ("volume" in data) {
diff --git a/app/js/queue.js b/app/js/queue.js
index 0243b7d..1c7fc77 100644
--- a/app/js/queue.js
+++ b/app/js/queue.js
@@ -1,13 +1,13 @@
 import * as html from "./lib/html.js";
-import * as ui from "./lib/ui.js";
+import * as format from "./lib/format.js";
 
-import Component from "./component.js";
+import Component, { HasApp } from "./component.js";
 
 class Queue extends Component {
 	constructor() {
 		super();
 		this._currentId = null;
-
+/*
 		this.querySelector(".clear").addEventListener("click", async _ => {
 			await this._mpd.command("clear");
 			this._sync();
@@ -18,6 +18,7 @@ class Queue extends Component {
 			if (name === null) { return; }
 			this._mpd.command(`save "${this._mpd.escape(name)}"`);
 		});
+*/
 	}
 
 	handleEvent(e) {
@@ -54,19 +55,72 @@ class Queue extends Component {
 	}
 
 	_updateCurrent() {
-		Array.from(this.querySelectorAll("[data-song-id]")).forEach(/** @param {HTMLElement} node */ node => {
+		Array.from(this.children).forEach(/** @param {HTMLElement} node */ node => {
 			node.classList.toggle("current", node.dataset.songId == this._currentId);
 		});
 	}
 
 	_buildSongs(songs) {
-		let ul = this.querySelector("ul");
-		html.clear(ul);
+		html.clear(this);
 
-		songs.map(song => ui.song(ui.CTX_QUEUE, song, ul));
+		songs.forEach(song => this.appendChild(new Song(song)));
 
 		this._updateCurrent();
 	}
 }
 
 customElements.define("cyp-queue", Queue);
+
+class Item extends HasApp {
+	constructor() {
+		super();
+		this.addEventListener("click", e => this.parentNode.selection.toggle(this));
+	}
+}
+
+class Song extends Item {
+	constructor(data) {
+		super();
+		this._data = data;
+		this.dataset.songId = data["Id"];
+	}
+
+	connectedCallback() {
+		let info = html.node("div", {className:"info"}, "", this);
+
+		let lines = formatSongInfo(this._data);
+		html.node("h2", {}, lines.shift(), info);
+		lines.length && html.node("div", {}, lines.shift(), info);
+
+/*
+				playButton(TYPE_ID, id, node);
+				deleteButton(TYPE_ID, id, node);
+*/
+		}
+}
+
+customElements.define("cyp-song", Song);
+
+
+// FIXME vyfaktorovat nekam do haje
+function formatSongInfo(data) {
+	let lines = [];
+	let tokens = [];
+
+	if (data["Title"]) {
+		tokens.push(data["Title"]);
+		lines.push(tokens.join(" "));
+		lines.push(format.subtitle(data));
+	} else {
+		lines.push(fileName(data));
+		lines.push("\u00A0");
+	}
+
+	return lines;
+}
+
+// FIXME vyfaktorovat nekam do haje
+function fileName(data) {
+	return data["file"].split("/").pop();
+}
+
diff --git a/app/js/yt.js b/app/js/yt.js
index 2117a63..5db1a3c 100644
--- a/app/js/yt.js
+++ b/app/js/yt.js
@@ -1,8 +1,9 @@
-import * as mpd from "./lib/mpd.js";
 import * as html from "./lib/html.js";
 import * as conf from "./conf.js";
 
-let node;
+import Component from "./component.js";
+
+
 const decoder = new TextDecoder("utf-8");
 
 function decodeChunk(byteArray) {
@@ -10,54 +11,60 @@ function decodeChunk(byteArray) {
 	return decoder.decode(byteArray).replace(/\u000d/g, "\n");
 }
 
-async function post(q) {
-	let pre = node.querySelector("pre");
-	html.clear(pre);
-
-	node.classList.add("pending");
-
-	let body = new URLSearchParams();
-	body.set("q", q);
-	let response = await fetch("/youtube", {method:"POST", body});
-
-	let reader = response.body.getReader();
-	while (true) {
-		let { done, value } = await reader.read();
-		if (done) { break; }
-		pre.textContent += decodeChunk(value);
-		pre.scrollTop = pre.scrollHeight;
+class YT extends Component {
+	_onAppLoad() {
+		this.querySelector(".download").addEventListener("click", _ => this._download());
+		this.querySelector(".search-download").addEventListener("click", _ => this._search());
+		this.querySelector(".clear").addEventListener("click", _ => this._clear());
 	}
-	reader.releaseLock();
 
-	node.classList.remove("pending");
+	_download() {
+		let url = prompt("Please enter a YouTube URL:");
+		if (!url) { return; }
 
-	if (response.status == 200) {
-		mpd.command(`update ${mpd.escape(conf.ytPath)}`);
+		this._post(url);
+	}
+
+	_search() {
+		let q = prompt("Please enter a search string:");
+		if (!q) { return; }
+
+		this._post(`ytsearch:${q}`);
+	}
+
+	_clear() {
+		html.clear(this.querySelector("pre"));
+	}
+
+	async _post(q) {
+		let pre = this.querySelector("pre");
+		html.clear(pre);
+
+		this.classList.add("pending");
+
+		let body = new URLSearchParams();
+		body.set("q", q);
+		let response = await fetch("/youtube", {method:"POST", body});
+
+		let reader = response.body.getReader();
+		while (true) {
+			let { done, value } = await reader.read();
+			if (done) { break; }
+			pre.textContent += decodeChunk(value);
+			pre.scrollTop = pre.scrollHeight;
+		}
+		reader.releaseLock();
+
+		this.classList.remove("pending");
+
+		if (response.status == 200) {
+			this._mpd.command(`update ${this._mpd.escape(conf.ytPath)}`);
+		}
+	}
+
+	_onComponentChange(c, isThis) {
+		this.hidden = !isThis;
 	}
 }
 
-function download() {
-	let url = prompt("Please enter a YouTube URL:");
-	if (!url) { return; }
-
-	post(url);
-}
-
-function search() {
-	let q = prompt("Please enter a search string:");
-	if (!q) { return; }
-	post(`ytsearch:${q}`);
-}
-
-function clear() {
-	html.clear(node.querySelector("pre"));
-}
-
-export async function activate() {}
-
-export function init(n) {
-	node = n;
-	node.querySelector(".download").addEventListener("click", e => download());
-	node.querySelector(".search-download").addEventListener("click", e => search());
-	node.querySelector(".clear").addEventListener("click", e => clear());
-}
+customElements.define("cyp-yt", YT);
\ No newline at end of file