main.js

   1 // Written by Mike Frysinger <vapier@gmail.com>.  Released into the public domain.  Suck it.
   2
   3 /* Globals to allow easy manipulation via javascript console */
   4 var mpc;
   5 var tcpclient;
   6 var refresh_id = NaN;
   7
   8 function TcpClientSender(tcpclient) {
   9         this.tcpclient = tcpclient;
  10 }
  11 TcpClientSender.prototype.send = function(data, cb) {
  12         this.tcpclient.sendMessage(data, cb);
  13 }
  14 TcpClientSender.prototype.poll = function() {
  15         this.tcpclient.poll();
  16 }
  17 TcpClientSender.prototype.reconnect = function() {
  18         this.tcpclient.disconnect();
  19         this.tcpclient.connect();
  20 }
  21
  22 function tramp_mpc_recv(data) {
  23         mpc.recv(data);
  24 }
  25
  26 function sync_storage(sync) {
  27         return sync ? chrome.storage.sync : chrome.storage.local;
  28 }
  29
  30 window.onload = function() {
  31         var local_keys = [
  32                 'sync',
  33         ];
  34         var sync_keys = [
  35                 'host', 'port', 'refresh',
  36         ];
  37         var options = {
  38                 'host': '192.168.0.2',
  39                 'port': 6600,
  40                 'sync': true,
  41                 'refresh': 5,
  42         };
  43
  44         chrome.storage.local.get(local_keys, function(settings) {
  45                 local_keys.forEach(function(key) {
  46                         if (key in settings)
  47                                 options[key] = settings[key]
  48                 });
  49
  50                 var storage = sync_storage(options['sync']);
  51                 storage.get(sync_keys, function(settings) {
  52                         sync_keys.forEach(function(key) {
  53                                 if (key in settings)
  54                                         options[key] = settings[key];
  55                         });
  56
  57                         init_ui(local_keys, sync_keys, options);
  58                         mpc_connect();
  59                 });
  60         });
  61 };
  62
  63 window.onkeypress = function(e) {
  64         if (e.target != document.body) {
  65                 /* Only allow the shortcuts when the focus is on the body.
  66                    Otherwise you can't type these numbers into text fields. */
  67                 return;
  68         }
  69
  70         switch (e.keyCode) {
  71         case 49: // 1
  72                 show_page('controls');
  73                 break;
  74         case 50: // 2
  75                 show_page('metadata');
  76                 break;
  77         case 51: // 3
  78                 show_page('playlist');
  79                 break;
  80         case 52: // 4
  81                 show_page('options');
  82                 break;
  83         }
  84 };
  85
  86 function mpc_refresh() {
  87         mpc.status();
  88 }
  89
  90 function mpc_connect(host, port) {
  91         if (typeof(host) != 'string') {
  92                 host = window['opts_host'].value;
  93                 port = parseInt(window['opts_port'].value);
  94         }
  95
  96         if (mpc != undefined) {
  97                 console.log('disconnecting');
  98                 update_ui('disconnect');
  99                 delete mpc;
 100                 tcpclient.disconnect();
 101                 delete tcpclient;
 102         }
 103
 104         update_ui('init');
 105         tcpclient = new TcpClient(host, port);
 106         tcpclient.connect(function() {
 107                 var mpc_sender = new TcpClientSender(tcpclient);
 108                 tcpclient.addResponseListener(tramp_mpc_recv);
 109                 mpc = new Mpc(mpc_sender, update_ui);
 110                 console.log('connected to ' + host + ':' + port);
 111                 console.log('protip: use the "mpc" object to poke mpd directly.\n' +
 112                             'you can also do mpc.set_debug(3) to see traffic');
 113                 mpc_refresh();
 114                 update_refresh_timer();
 115         });
 116 }
 117
 118 function tramp_mpc_consume() {
 119         var val = zo(!getToggleButton(this));
 120         mpc.consume(val);
 121         setToggleButton(this, val);
 122 }
 123 function tramp_mpc_deleteid() { mpc.deleteid(this.title); }
 124 function tramp_mpc_next() { mpc.next(); }
 125 function tramp_mpc_pause() { mpc.pause(); }
 126 function tramp_mpc_play() { mpc.play(); }
 127 function tramp_mpc_previous() { mpc.previous(); }
 128 function tramp_mpc_random() {
 129         var val = zo(!getToggleButton(this));
 130         mpc.random(val);
 131         setToggleButton(this, val);
 132 }
 133 function tramp_mpc_repeat() {
 134         var val = zo(!getToggleButton(this));
 135         mpc.repeat(val);
 136         setToggleButton(this, val);
 137 }
 138 function tramp_mpc_seekcur() { mpc.seekcur(this.value); }
 139 function tramp_mpc_setvol() { mpc.setvol(this.value); }
 140 function tramp_mpc_single() {
 141         var val = zo(!getToggleButton(this));
 142         mpc.single(val);
 143         setToggleButton(this, val);
 144 }
 145 function tramp_mpc_stop() { mpc.stop(); }
 146
 147 function zo(val) {
 148         return val ? 1 : 0;
 149 }
 150 function szo(val) {
 151         return val == '0' ? 0 : 1;
 152 }
 153 function getToggleButton(btn) {
 154         return btn.style.borderStyle == 'inset';
 155 }
 156 function setToggleButton(btn, val) {
 157         if (val === undefined)
 158                 val = !getToggleButton(btn);
 159         btn.style.borderStyle = val ? 'inset' : '';
 160 }
 161
 162 function show_page(page) {
 163         if (typeof(page) != 'string')
 164                 page = this.id.split('.')[1];
 165
 166         // We might not be connected in which case 'mpc' will be undefined.
 167         switch (page) {
 168         case 'playlist':
 169                 if (mpc)
 170                         mpc.playlistinfo();
 171                 // Fallthrough.
 172         case 'metadata':
 173                 if (mpc)
 174                         mpc.currentsong();
 175                 break;
 176         }
 177
 178         var eles = document.getElementsByClassName('main');
 179         for (var i = 0; i < eles.length; ++i) {
 180                 var ele = eles[i];
 181                 var dis = 'none';
 182                 var cls = '';
 183                 if (ele.id == 'main.' + page) {
 184                         dis = '';
 185                         cls = 'selected';
 186                 }
 187                 ele.style.display = dis;
 188                 document.getElementById('tab.' + ele.id.split('.')[1]).className = cls;
 189         }
 190 }
 191
 192 function do_refresh() {
 193         mpc_refresh();
 194         refresh_id = window.setTimeout(do_refresh, window['opts_refresh'].value * 1000);
 195 }
 196
 197 function update_refresh_timer() {
 198         if (!isNaN(refresh_id))
 199                 window.clearTimeout(refresh_id);
 200         var rate = window['opts_refresh'].value * 1000;
 201         if (rate > 0)
 202                 refresh_id = window.setTimeout(do_refresh, rate);
 203 }
 204
 205 function update_local_settings() {
 206         var setting = {};
 207         setting[this.id] = this.checked;
 208         chrome.storage.local.set(setting);
 209 }
 210
 211 function update_sync_settings() {
 212         var setting = {};
 213         setting[this.id] = this.value;
 214         var storage = sync_storage(window['opts_sync'].checked);
 215         storage.set(setting);
 216
 217         switch (this.id) {
 218         case 'refresh':
 219                 update_refresh_timer();
 220                 break;
 221         }
 222 }
 223
 224 function init_ui(local_keys, sync_keys, options) {
 225         var ele, i;
 226
 227         /* Setup footer */
 228         i = 1;
 229         [
 230                 'controls', 'metadata', 'playlist', 'options',
 231         ].forEach(function(id) {
 232                 var ele = document.getElementById('tab.' + id);
 233                 ele.onclick = show_page;
 234                 ele.title = id + ' [' + i + ']';
 235                 ++i;
 236         });
 237
 238         /* Setup control tab */
 239         ui_mpc_status = document.getElementById('status');
 240         [
 241                 'consume', 'next', 'pause', 'play', 'previous', 'random', 'repeat',
 242                 'seekcur', 'setvol', 'single', 'stop',
 243         ].forEach(function(id) {
 244                 var ele = window['ui_mpc_' + id] = document.getElementById(id);
 245                 ele.onchange = ele.onclick = window['tramp_mpc_' + id];
 246                 ele.title = id;
 247                 if (ele.accessKey)
 248                         ele.title += ' [' + ele.accessKey + ']'
 249         });
 250         window['ui_mpc_currtime'] = document.getElementById('currtime');
 251
 252         /* Setup metadata tab */
 253         [
 254                 'album', 'artist', 'date', 'file', 'title',
 255         ].forEach(function(id) {
 256                 window['ui_mpc_metadata_' + id] = document.getElementById('metadata.' + id);
 257         });
 258
 259         /* Setup playlist tab */
 260         window['ui_mpc_playlist'] = document.getElementById('playlist');
 261
 262         /* Setup options tab */
 263         document.getElementById('connect').onclick = mpc_connect;
 264         local_keys.forEach(function(id) {
 265                 var ele = window['opts_' + id] = document.getElementById(id);
 266                 ele.checked = options[id];
 267                 ele.onchange = update_local_settings;
 268         });
 269         sync_keys.forEach(function(id) {
 270                 var ele = window['opts_' + id] = document.getElementById(id);
 271                 ele.value = options[id];
 272                 ele.oninput = update_sync_settings;
 273         });
 274 }
 275
 276 function pretty_time(time) {
 277         var sec, min, hrs, ret = '';
 278         time = parseInt(time);
 279         sec = time % 60;
 280         min = parseInt((time / 60) % 60);
 281         hrs = parseInt((time / 3600) % 3600);
 282         if (hrs)
 283                 ret = hrs + ':' + ("00" + min).substr(-2) + ':';
 284         else
 285                 ret = min + ':';
 286         return ret + ("00" + sec).substr(-2);
 287 }
 288
 289 function playlist_del() {
 290         mpc.deleteid(this.song_id);
 291         this.parentNode.remove();
 292 }
 293
 294 function playlist_play() {
 295         mpc.playid(this.song_id);
 296         this.parentNode.style.fontWeight = 'bold';
 297 }
 298
 299 function update_ui(state, cmd) {
 300         if (typeof(state) == 'string') {
 301                 ui_mpc_status.innerText = ({
 302                         'disconnect': 'Disconnecting...',
 303                         'init': 'Connecting...',
 304                 })[state];
 305                 return;
 306         }
 307
 308         if (Array.isArray(state)) {
 309                 /*
 310                 switch (cmd[0]) {
 311                 case 'setvol':
 312                 case 'seekcur':
 313                         break;
 314                 default:
 315                         mpc_refresh();
 316                 }
 317                 */
 318                 return;
 319         }
 320
 321         /* Update the metadata tab only when things have changed. */
 322         var currentsong;
 323         if ('Currentsong' in state) {
 324                 currentsong = state.Currentsong;
 325                 if (ui_mpc_metadata_file.lastUpdate != state.Currentsong.lastUpdate) {
 326                         ui_mpc_metadata_album.innerText = currentsong.Album;
 327                         ui_mpc_metadata_artist.innerText = currentsong.Artist;
 328                         ui_mpc_metadata_title.innerText = currentsong.Title;
 329                         ui_mpc_metadata_date.innerText = currentsong.Date;
 330                         ui_mpc_metadata_file.innerText = currentsong.file;
 331                 }
 332         }
 333
 334         /* Update the playlist tab only when things have changed. */
 335         if ('Playlist' in state && ui_mpc_playlist.lastUpdate != state.Playlist.lastUpdate) {
 336                 var playlist = state.Playlist;
 337
 338                 ui_mpc_playlist.innerHTML = '';
 339                 playlist.forEach(function(song) {
 340                         var cell, row = ui_mpc_playlist.insertRow(-1);
 341                         if (currentsong && song.Pos == currentsong.Pos)
 342                                 row.style.fontWeight = 'bold';
 343
 344                         cell = row.insertCell(-1);
 345                         cell.id = 'playlist_del';
 346                         cell.innerHTML = '&#164;';
 347                         cell.song_id = song.Id;
 348                         cell.title = 'delete';
 349                         cell.onclick = playlist_del;
 350
 351                         cell = row.insertCell(-1);
 352                         cell.innerText = song.Pos;
 353                         cell.style.textAlign = 'right';
 354                         cell.song_id = song.Id;
 355                         cell.title = 'play';
 356                         cell.onclick = playlist_play;
 357
 358                         if ('Artist' in song) {
 359                                 row.insertCell(-1).innerText = song.Artist;
 360                                 row.insertCell(-1).innerText = song.Album;
 361                                 row.insertCell(-1).innerText = song.Title;
 362                         } else {
 363                                 cell = row.insertCell(-1);
 364                                 cell.innerText = song.file;
 365                                 cell.colSpan = 3;
 366                         }
 367                         row.insertCell(-1).innerText = pretty_time(song.Time);
 368                 });
 369
 370                 ui_mpc_playlist.lastUpdate = playlist.lastUpdate;
 371         }
 372
 373         /* Update the status tab. */
 374         var time, percent;
 375         if ('time' in state) {
 376                 // When stopped, there is no time field at all.
 377                 time = state.time.split(':');
 378                 percent = Math.floor((0.0 + time[0]) * 100 / (0.0 + time[1]));
 379         } else {
 380                 time = [0, 0];
 381                 percent = 0;
 382         }
 383         ui_mpc_seekcur.max = time[1];
 384         ui_mpc_seekcur.value = time[0];
 385         ui_mpc_seekcur.title = 'seekcur (' + percent + '%)';
 386         ui_mpc_currtime.innerText = [pretty_time(time[0]), pretty_time(time[1]), percent + '%'].join(' / ');
 387
 388         ui_mpc_setvol.title = 'setvol';
 389         if ('volume' in state) {
 390                 ui_mpc_setvol.value = state.volume;
 391                 ui_mpc_setvol.title += ' (' + state.volume + '%)';
 392         }
 393
 394         [
 395                 'consume', 'random', 'repeat', 'single',
 396         ].forEach(function(id) {
 397                 setToggleButton(window['ui_mpc_' + id], szo(state[id]));
 398         });
 399
 400         ui_mpc_status.innerText = ({
 401                 'play': 'Playing',
 402                 'pause': 'Paused',
 403                 'stop': 'Stopped',
 404         })[state.state];
 405 }