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