scripts/ajax.js
author Dan
Fri, 15 Aug 2008 23:29:37 -0400
changeset 31 48004643a8a5
parent 22 3a4f0cd0794e
child 39 38dbcda3cf20
permissions -rw-r--r--
Made Greyhound check for SimpleXML.
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/**
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 * AJAX functions
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 * 
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 * Greyhound - real web management for Amarok
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 * Copyright (C) 2008 Dan Fuhry
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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var ajax;
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var is_playing = false, current_track = -1, current_track_length, current_track_pos, ct_advance_timeout = false, ct_counter = false, playlist_md5 = false, first_load = true;
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var onload_hooks = new Array();
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function addOnloadHook(func)
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{
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  if ( typeof ( func ) == 'function' )
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  {
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    if ( typeof(onload_hooks.push) == 'function' )
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    {
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      onload_hooks.push(func);
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    }
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    else
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    {
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      onload_hooks[onload_hooks.length] = func;
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    }
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  }
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}
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function runOnloadHooks(e)
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{
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  var _errorTrapper = 0;
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  for ( var _oLc = 0; _oLc < onload_hooks.length; _oLc++ )
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  {
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    _errorTrapper++;
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    if ( _errorTrapper >= 1000 )
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      break;
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    var _f = onload_hooks[_oLc];
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    if ( typeof(_f) == 'function' )
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    {
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      _f(e);
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    }
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  }
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}
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function ajaxGet(uri, f)
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{
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  if ( ajax_panicked )
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    return false;
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  if (window.XMLHttpRequest)
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  {
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    ajax = new XMLHttpRequest();
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  }
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  else
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  {
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    if (window.ActiveXObject) {           
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      ajax = new ActiveXObject("Microsoft.XMLHTTP");
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    }
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    else
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    {
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      alert('AmaroK client-side runtime error: No AJAX support, unable to continue');
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      return;
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    }
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  }
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  ajax.onreadystatechange = f;
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  ajax.open('GET', uri, true);
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  ajax.setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" );
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  ajax.send(null);
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}
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function ajaxPost(uri, parms, f)
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{
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  if ( ajax_panicked )
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    return false;
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  if (window.XMLHttpRequest)
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  {
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    ajax = new XMLHttpRequest();
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  }
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  else
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  {
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    if (window.ActiveXObject)
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    {           
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      ajax = new ActiveXObject("Microsoft.XMLHTTP");
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    }
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    else
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    {
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      alert('AmaroK client-side runtime error: No AJAX support, unable to continue');
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      return;
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    }
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  }
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  ajax.onreadystatechange = f;
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  ajax.open('POST', uri, true);
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  ajax.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
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  // Setting Content-length in Safari triggers a warning
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  if ( !is_Safari )
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  {
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    ajax.setRequestHeader("Content-length", parms.length);
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  }
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  ajax.setRequestHeader("Connection", "close");
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  ajax.onerror = function()
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  {
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    ajax_panic();
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  }
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  ajax.send(parms);
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}
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function setAjaxLoading()
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{
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  $('ajax_status').object.src = img_ajax;
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  $('ajax_status').object.style.display = 'block';
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}
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function unsetAjaxLoading()
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{
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  $('ajax_status').object.src = 'about:blank';
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  $('ajax_status').object.style.display = 'none';
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}
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var refresh_playlist = function()
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{
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  setAjaxLoading();
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  ajaxGet('/action.json/refresh', function()
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    {
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      if ( ajax.readyState == 4 && ajax.status == 200 )
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      {
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        unsetAjaxLoading();
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        var response = (' ' + ajax.responseText).substr(1);
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        // quickie JSON parser :)
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        response = eval('(' + response + ')');
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        // has the playlist been modified?
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        if ( playlist_md5 )
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        {
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          if ( response.playlist_hash != playlist_md5 )
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          {
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            // playlist has changed, reload
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            window.location.reload();
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            return false;
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          }
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        }
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        playlist_md5 = response.playlist_hash;
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        // update track number
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        if ( response.current_track != current_track )
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        {
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          var ot_id = 'track_' + current_track;
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          var nt_id = 'track_' + response.current_track;
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          current_track = response.current_track;
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          if ( $(ot_id).hasClass('current') )
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          {
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            $(ot_id).rmClass('current');
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          }
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          if ( ! $(nt_id).hasClass('current') )
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          {
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            $(nt_id).addClass('current');
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          }
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          pulsar_reset();
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        }
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        // update playing status
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        is_playing = response.is_playing;
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        if ( allow_control )
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        {
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          var img = $('btn_playpause').object.getElementsByTagName('img')[0];
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          if ( is_playing )
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          {
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            img.src = img_pause;
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          }
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          else
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          {
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            img.src = img_play;
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          }
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        }
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        // update volume
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        if ( response.volume != current_volume )
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        {
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          set_volume_fill(response.volume);
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          current_volume = response.volume;
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        }
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        // auto-refresh on track advance
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        if ( ct_advance_timeout )
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        {
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          clearTimeout(ct_advance_timeout);
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        }
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        // countdown/up timer
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        var time_remaining = response.current_track_length - response.current_track_pos;
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        current_track_length = response.current_track_length;
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        current_track_pos = response.current_track_pos;
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        if ( ct_counter )
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          clearInterval(ct_counter);
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        update_clock();
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        // set page title
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        updateTitle(response.current_track_artist, response.current_track_album, response.current_track_title);
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        // if not playing, set the position slider to zero
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        if ( !is_playing && !response.is_paused )
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        {
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          posslide_set_position(0);
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        }
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        // set advance timer
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        if ( is_playing && time_remaining > 0 )
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        {
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          ct_advance_timeout = setTimeout(refresh_playlist, ( 1000 * time_remaining ));
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          ct_counter = setInterval(update_clock, 1000);
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        }
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        if ( first_load )
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        {
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          first_load = false;
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          jump_current_track();
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        }
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      }
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      else if ( ajax.readyState == 4 && ajax.status != 200 )
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      {
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        ajax_panic();
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        console.debug(ajax);
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      }
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    });
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}
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22
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var ajax_panicked = false;
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function ajax_panic()
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{
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  // set error flag
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  ajax_panicked = true;
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  // scroll to the top
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  window.scroll(0, 0);
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  // stop events
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  pulsar_reset();
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  window.clearInterval(pl_refresh_id);
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  if ( ct_counter )
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    window.clearInterval(ct_counter);
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  if ( pulsar_interval_id )
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    window.clearInterval(pulsar_interval_id);
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  // show error message
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  var floater = document.createElement('div');
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  floater.style.backgroundColor = '#ffffff';
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  floater.style.opacity = 0.7;
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  floater.style.filter = 'alpha(opacity=70)';
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  floater.style.textAlign = 'center';
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  floater.style.paddingTop = '120px';
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  floater.style.position = 'fixed';
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  floater.style.zIndex = '999';
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  floater.style.width = '100%';
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  floater.style.height = '100%';
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  floater.style.top = '0px';
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  floater.style.left = '0px';
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  floater.style.color = '#000000';
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  floater.innerHTML = 'There was a problem with a refresh request to the server. Please reload the page.';
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  var body = document.getElementsByTagName('body')[0];
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  body.appendChild(floater);
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}
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2
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function player_action(action)
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{
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  var act2 = action;
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  setAjaxLoading();
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  ajaxGet('/action.json/' + action, function()
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    {
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      if ( ajax.readyState == 4 && ajax.status == 200 )
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      {
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        unsetAjaxLoading();
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        refresh_playlist();
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      }
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    });
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}
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function jump_to_song(tid)
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{
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  setAjaxLoading();
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  if ( tid == current_track )
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    return false;
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  if ( !allow_control )
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    return false;
2
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  ajaxGet('/action.json/jump/' + tid, function()
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    {
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      if ( ajax.readyState == 4 && ajax.status == 200 )
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      {
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        unsetAjaxLoading();
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        var response = (' ' + ajax.responseText).substr(1);
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        // quickie JSON parser :)
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        response = eval('(' + response + ')');
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        // update track number
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        var ot_id = 'track_' + current_track;
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        var nt_id = 'track_' + tid;
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        current_track = tid;
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        if ( $(ot_id).hasClass('current') )
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        {
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          $(ot_id).rmClass('current');
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diff changeset
   299
        }
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diff changeset
   300
        if ( ! $(nt_id).hasClass('current') )
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Dan
parents: 0
diff changeset
   301
        {
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diff changeset
   302
          $(nt_id).addClass('current');
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diff changeset
   303
        }
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
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diff changeset
   304
        // update pulsar
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
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diff changeset
   305
        pulsar_reset();
2
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Dan
parents: 0
diff changeset
   306
        // update playing status
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Dan
parents: 0
diff changeset
   307
        var img = $('btn_playpause').object.getElementsByTagName('img')[0];
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diff changeset
   308
        is_playing = true;
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Dan
parents: 0
diff changeset
   309
        img.src = img_play;
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Dan
parents: 0
diff changeset
   310
        // auto-refresh on track advance
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Dan
parents: 0
diff changeset
   311
        if ( ct_advance_timeout )
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Dan
parents: 0
diff changeset
   312
        {
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Dan
parents: 0
diff changeset
   313
          clearTimeout(ct_advance_timeout);
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Dan
parents: 0
diff changeset
   314
        }
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Dan
parents: 0
diff changeset
   315
        if ( ct_counter )
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Dan
parents: 0
diff changeset
   316
          clearInterval(ct_counter);
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Dan
parents: 0
diff changeset
   317
        var time_remaining = response.current_track_length - response.current_track_pos;
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Dan
parents: 0
diff changeset
   318
        current_track_length = response.current_track_length;
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Dan
parents: 0
diff changeset
   319
        current_track_pos = response.current_track_pos;
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Dan
parents: 0
diff changeset
   320
        if ( is_playing )
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Dan
parents: 0
diff changeset
   321
        {
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Dan
parents: 0
diff changeset
   322
          ct_advance_timeout = setTimeout(refresh_playlist, ( 1000 * time_remaining ));
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Dan
parents: 0
diff changeset
   323
          update_clock();
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   324
          ct_counter = setInterval(update_clock, 1000);
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Dan
parents: 0
diff changeset
   325
        }
18
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   326
        updateTitle(response.current_track_artist, response.current_track_album, response.current_track_title);
2
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Dan
parents: 0
diff changeset
   327
      }
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   328
    });
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Dan
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diff changeset
   329
}
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Dan
parents: 0
diff changeset
   330
10
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
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diff changeset
   331
function set_playback_position(pos)
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   332
{
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
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parents: 6
diff changeset
   333
  pos = Math.round(( pos / 100 ) * current_track_length);
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Dan
parents: 6
diff changeset
   334
  setAjaxLoading();
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   335
  if ( !allow_control )
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   336
    return false;
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   337
  ajaxGet('/action.json/seek/' + pos, function()
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   338
    {
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   339
      if ( ajax.readyState == 4 && ajax.status == 200 )
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   340
      {
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   341
        unsetAjaxLoading();
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
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diff changeset
   342
        current_track_pos = pos;
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   343
        update_clock();
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Dan
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diff changeset
   344
      }
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
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diff changeset
   345
    });
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   346
}
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
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diff changeset
   347
2
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Dan
parents: 0
diff changeset
   348
function update_clock()
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Dan
parents: 0
diff changeset
   349
{
10
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
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diff changeset
   350
  posslide_set_position((100 * (current_track_pos / current_track_length)));
2
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   351
  var str = secs_to_string(current_track_pos) + '/' + secs_to_string(current_track_length);
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Dan
parents: 0
diff changeset
   352
  $('playmeter').object.innerHTML = str;
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   353
  current_track_pos++;
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Dan
parents: 0
diff changeset
   354
}
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Dan
parents: 0
diff changeset
   355
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Dan
parents: 0
diff changeset
   356
function secs_to_string(time)
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   357
{
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Dan
parents: 0
diff changeset
   358
  var count_seconds = time % 60;
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   359
  var count_minutes = ( time - count_seconds ) / 60;
13
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   360
  if ( isNaN(count_seconds) )
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
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diff changeset
   361
    count_seconds = 0;
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   362
  if ( isNaN(count_minutes) )
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   363
    count_minutes = 0;
2
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   364
  return fill_zeroes(count_minutes) + ':' + fill_zeroes(count_seconds);
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   365
}
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   366
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Dan
parents: 0
diff changeset
   367
function fill_zeroes(str, len)
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   368
{
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   369
  if ( !len )
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   370
    len = 2;
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Dan
parents: 0
diff changeset
   371
  if ( typeof(str) == 'number' && str == 0 )
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   372
    str = '0';
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   373
  str = String(str);
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   374
  while ( str.length < len )
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   375
  {
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   376
    str = '0' + str;
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   377
  }
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   378
  return str;
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   379
}
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   380
22
3a4f0cd0794e Added ability to gracefully fail the client if the connection to the server fails
Dan
parents: 21
diff changeset
   381
var pl_refresh_id = setInterval(refresh_playlist, 10000);
2
860ba7141641 Should be nearly finished now - includes volume control, length measurement, and seems pretty stable
Dan
parents: 0
diff changeset
   382
10
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   383
window.onload = function(e)
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   384
{
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   385
  runOnloadHooks(e);
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   386
}
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   387
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   388
addOnloadHook(refresh_playlist);
d3059e20b0fa SECURITY: Fix ability to crash server in ajax.php; added playback position slider and ability to seek through current song
Dan
parents: 6
diff changeset
   389
14
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   390
// scroll to the current track
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   391
function jump_current_track()
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   392
{
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   393
  var top = $('track_' + current_track).Top() - 138;
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   394
  window.scroll(0, top);
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   395
  if ( typeof(fix_scroll) == 'function' )
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   396
  {
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   397
    fix_scroll();
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   398
  }
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   399
}
7a1573676cc4 Added jump-to-current function in iphone theme; fixed md5('') call if unique IDs empty in playlist XML file
Dan
parents: 13
diff changeset
   400
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   401
// pulse the current track
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   402
var pulsar_current = 0, pulsar_tdlist = [], pulsar_direction = 1;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   403
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   404
var pulsar_reset = function()
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   405
{
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   406
  // remove any pulsar classes from items that aren't "current"
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   407
  var boobylist = document.getElementsByTagName('tr');
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   408
  for ( var i = 0; i < boobylist.length; i++ )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   409
  {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   410
    var booby = boobylist[i];
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   411
    var match = booby.className.match(/(^| )(pulsar[0-9])( |$)/);
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   412
    if ( match && !$(booby).hasClass('current') )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   413
    {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   414
      $(booby).rmClass(match[2]);
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   415
    }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   416
  }
13
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   417
  // recalculate list of rows that should pulse
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   418
  var tdlist_new = document.getElementsByClassName('current', 'tr');
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   419
  if ( pulsar_current == 0 && tdlist_new == pulsar_tdlist )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   420
  {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   421
    return true;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   422
  }
13
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   423
  // reset everything to 0
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   424
  pulsar_tdlist = tdlist_new;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   425
  pulsar_current = 0;
13
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   426
  pulsar_direction = 1;
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   427
  for ( var i = 0; i < pulsar_tdlist.length; i++ )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   428
  {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   429
    var td = pulsar_reset[i];
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   430
    for ( var i = 1; i < 10; i++ )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   431
    {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   432
      if ( $(td).hasClass('pulsar' + i) )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   433
      {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   434
        $(td).rmClass('pulsar' + i);
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   435
      }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   436
    }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   437
    if ( ! $(td).hasClass('pulsar0') )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   438
    {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   439
      $(td).addClass('pulsar0');
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   440
    }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   441
  }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   442
}
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   443
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   444
var pulsar_advance = function()
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   445
{
13
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   446
  // this should be as optimized as possible, it should use a precalculated
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   447
  // list of elements to pulse and whatnot... heck even right now it's not
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   448
  // really as optimized as it should be due to the logic, but a lot of it's
b5db2345c397 Added PHP feature check to prevent script from throwing unneeded exceptions on unsupported PHP configurations
Dan
parents: 11
diff changeset
   449
  // kinda more or less necessary.
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   450
  if ( !is_playing )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   451
    return true;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   452
  if ( pulsar_current + pulsar_direction == 10 )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   453
  {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   454
    pulsar_direction = -1;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   455
  }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   456
  else if ( pulsar_current + pulsar_direction == -1 )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   457
  {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   458
    pulsar_direction = 1;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   459
  }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   460
  var nc = pulsar_current + pulsar_direction;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   461
  for ( var i = 0; i < pulsar_tdlist.length; i++ )
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   462
  {
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   463
    $(pulsar_tdlist[i]).rmClass('pulsar' + pulsar_current).addClass('pulsar' + nc);
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   464
  }
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   465
  pulsar_current = nc;
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   466
}
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   467
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   468
addOnloadHook(pulsar_reset);
22
3a4f0cd0794e Added ability to gracefully fail the client if the connection to the server fails
Dan
parents: 21
diff changeset
   469
var pulsar_interval_id = setInterval(pulsar_advance, 50);
11
0faea3a6c881 Fixed some position slider issues; added a pulsing effect to the current track (fun!)
Dan
parents: 10
diff changeset
   470
18
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   471
function updateTitle(artist, album, track)
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   472
{
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   473
  var sep = '';
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   474
  var str = '';
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   475
  if ( track )
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   476
  {
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   477
    str += sep + track;
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   478
    sep = ' - ';
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   479
  }
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   480
  if ( artist )
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   481
  {
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   482
    str += sep + artist;
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   483
    sep = ' - ';
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   484
  }
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   485
  if ( album )
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   486
  {
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   487
    str += sep + album;
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   488
    sep = ' - ';
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   489
  }
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   490
  str += sep + 'AmaroK Playlist';
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   491
  document.title = str;
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   492
}
69af47034212 Added page-titling functionality that changes document.title to match the current track; made position slider reset to zero on stop or playlist end
Dan
parents: 14
diff changeset
   493