/*
   SoundManager 2: Javascript Sound for the Web
   --------------------------------------------
   http://www.schillmania.com/projects/soundmanager2/

   Copyright (c) 2007, Scott Schiller. All rights reserved.
   Code licensed under the BSD License:
   http://www.schillmania.com/projects/soundmanager2/license.txt

   V2.0b.20070415
*/

function SoundManager(smURL,smID) {
  var self = this;
  this.version = 'V2.0b.20070415';
  this.url = (smURL||'soundmanager2.swf');

  this.debugMode = true;           // enable debugging output (div#soundmanager-debug, OR console if available + configured)
  this.useConsole = true;          // use firebug/safari console.log()-type debug console if available
  this.consoleOnly = false;        // if console is being used, do not create/write to #soundmanager-debug
  this.nullURL = 'data/null.mp3';  // path to "null" (empty) MP3 file, used to unload sounds

  this.defaultOptions = {
    'autoLoad': false,             // enable automatic loading (otherwise .load() will be called on demand with .play(), the latter being nicer on bandwidth - if you want to .load yourself, you also can)
    'stream': true,                // allows playing before entire file has loaded (recommended)
    'autoPlay': false,             // enable playing of file as soon as possible (much faster if "stream" is true)
    'onid3': null,                 // callback function for "ID3 data is added/available"
    'onload': null,                // callback function for "load finished"
    'whileloading': null,          // callback function for "download progress update" (X of Y bytes received)
    'onplay': null,                // callback for "play" start
    'whileplaying': null,          // callback during play (position update)
    'onstop': null,                // callback for "user stop"
    'onfinish': null,              // callback function for "sound finished playing"
    'onbeforefinish': null,        // callback for "before sound finished playing (at [time])"
    'onbeforefinishtime': 5000,    // offset (milliseconds) before end of sound to trigger beforefinish (eg. 1000 msec = 1 second)
    'onbeforefinishcomplete':null, // function to call when said sound finishes playing
    'onjustbeforefinish':null,     // callback for [n] msec before end of current sound
    'onjustbeforefinishtime':200,  // [n] - if not using, set to 0 (or null handler) and event will not fire.
    'multiShot': true,             // let sounds "restart" or layer on top of each other when played multiple times, rather than one-shot/one at a time
    'pan': 0,                      // "pan" settings, left-to-right, -100 to 100
    'volume': 100                  // self-explanatory. 0-100, the latter being the max.
  }

  this.allowPolling = true;        // allow flash to poll for status update (required for "while playing", "progress" etc. to work.)
  this.enabled = false;
  this.o = null;
  this.id = (smID||'sm2movie');
  this.oMC = null;
  this.sounds = [];
  this.soundIDs = [];
  this.isIE = (navigator.userAgent.match(/MSIE/));
  this.isSafari = (navigator.userAgent.match(/safari/i));
  this.debugID = 'soundmanager-debug';
  this._debugOpen = true;
  this._didAppend = false;
  this._appendSuccess = false;
  this._didInit = false;
  this._disabled = false;
  this._hasConsole = (typeof console != 'undefined' && typeof console.log != 'undefined');
  this._debugLevels = !self.isSafari?['debug','info','warn','error']:['log','log','log','log'];

  // --- public methods ---

  this.getMovie = function(smID) {
    // return self.isIE?window[smID]:document[smID];
    return self.isIE?window[smID]:(self.isSafari?document[smID+'-embed']:document.getElementById(smID+'-embed'));
  }

  this.loadFromXML = function(sXmlUrl) {
    try {
      self.o._loadFromXML(sXmlUrl);
    } catch(e) {
      self._failSafely();
      return true;
    }
  }

  this.createSound = function(oOptions) {
    if (!self._didInit) throw new Error('soundManager.createSound(): Not loaded yet - wait for soundManager.onload() before calling sound-related methods');
    if (arguments.length==2) {
      // function overloading in JS! :) ..assume simple createSound(id,url) use case
      oOptions = {'id':arguments[0],'url':arguments[1]}
    }
    var thisOptions = self._mergeObjects(oOptions);
    self._writeDebug('soundManager.createSound(): "<a href="#" onclick="soundManager.play(\''+thisOptions.id+'\');return false" title="play this sound">'+thisOptions.id+'</a>" ('+thisOptions.url+')',1);
    if (self._idCheck(thisOptions.id,true)) {
      self._writeDebug('sound '+thisOptions.id+' already defined - exiting',2);
      return false;
    }
    self.sounds[thisOptions.id] = new SMSound(self,thisOptions);
    self.soundIDs[self.soundIDs.length] = thisOptions.id;
    try {
      self.o._createSound(thisOptions.id,thisOptions.onjustbeforefinishtime);
    } catch(e) {
      self._failSafely();
      return true;
    }
    if (thisOptions.autoLoad || thisOptions.autoPlay) self.sounds[thisOptions.id].load(thisOptions);
    if (thisOptions.autoPlay) self.sounds[thisOptions.id].playState = 1; // we can only assume this sound will be playing soon.
  }

  this.destroySound = function(sID) {
    // explicitly destroy a sound before normal page unload, etc.
    if (!self._idCheck(sID)) return false;
    for (var i=self.soundIDs.length; i--;) {
      if (self.soundIDs[i] == sID) {
        delete self.soundIDs[i];
        continue;
      }
    }
    self.sounds[sID].unload();
    delete self.sounds[sID];
  }

  this.load = function(sID,oOptions) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].load(oOptions);
  }

  this.unload = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].unload();
  }

  this.play = function(sID,oOptions) {
    if (!self._idCheck(sID)) {
      if (typeof oOptions != 'Object') oOptions = {url:oOptions}; // overloading use case: play('mySound','/path/to/some.mp3');
      if (oOptions && oOptions.url) {
        // overloading use case, creation + playing of sound: .play('someID',{url:'/path/to.mp3'});
        self._writeDebug('soundController.play(): attempting to create "'+sID+'"',1);
        oOptions.id = sID;
        self.createSound(oOptions);
      } else {
        return false;
      }
    }
    self.sounds[sID].play(oOptions);
  }

  this.start = this.play; // just for convenience

  this.setPosition = function(sID,nMsecOffset) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].setPosition(nMsecOffset);
  }

  this.stop = function(sID) {
    if (!self._idCheck(sID)) return false;
    self._writeDebug('soundManager.stop('+sID+')',1);
    self.sounds[sID].stop(); 
  }

  this.stopAll = function() {
    self._writeDebug('soundManager.stopAll()',1);
    for (var oSound in self.sounds) {
      if (self.sounds[oSound] instanceof SMSound) self.sounds[oSound].stop(); // apply only to sound objects
    }
  }

  this.pause = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].pause();
  }

  this.resume = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].resume();
  }

  this.togglePause = function(sID) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].togglePause();
  }

  this.setPan = function(sID,nPan) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].setPan(nPan);
  }

  this.setVolume = function(sID,nVol) {
    if (!self._idCheck(sID)) return false;
    self.sounds[sID].setVolume(nVol);
  }

  this.setPolling = function(bPolling) {
    if (!self.o || !self.allowPolling) return false;
    self._writeDebug('soundManager.setPolling('+bPolling+')');
    self.o._setPolling(bPolling);
  }

  this.disable = function() {
    // destroy all functions
    if (self._disabled) return false;
    self._disabled = true;
    self._writeDebug('soundManager.disable(): Disabling all functions - future calls will return false.',1);
    for (var i=self.soundIDs.length; i--;) {
      self._disableObject(self.sounds[self.soundIDs[i]]);
    }
    self.initComplete(); // fire "complete", despite fail
    self._disableObject(self);
  }

  this.getSoundById = function(sID,suppressDebug) {
    if (!sID) throw new Error('SoundManager.getSoundById(): sID is null/undefined');
    var result = self.sounds[sID];
    if (!result && !suppressDebug) {
      self._writeDebug('"'+sID+'" is an invalid sound ID.',2);
      // soundManager._writeDebug('trace: '+arguments.callee.caller);
    }
    return result;
  }

  this.onload = function() {
    // window.onload() equivalent for SM2, ready to create sounds etc.
    // this is a stub - you can override this in your own external script, eg. soundManager.onload = function() {}
    soundManager._writeDebug('<em>Warning</em>: soundManager.onload() is undefined.',2);
  }

  this.onerror = function() {
    // stub for user handler, called when SM2 fails to load/init
  }

  // --- "private" methods ---

  this._idCheck = this.getSoundById;

  this._disableObject = function(o) {
    for (var oProp in o) {
      if (typeof o[oProp] == 'function' && typeof o[oProp]._protected == 'undefined') o[oProp] = function(){return false;}
    }
    oProp = null;
  }

  this._failSafely = function() {
    // exception handler for "object doesn't support this property or method"
    var flashCPLink = 'http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04.html';
    var fpgssTitle = 'You may need to whitelist this location/domain eg. file:///C:/ or C:/ or mysite.com, or set ALWAYS ALLOW under the Flash Player Global Security Settings page. Note that this seems to apply only to file system viewing.';
    var flashCPL = '<a href="'+flashCPLink+'" title="'+fpgssTitle+'">view/edit</a>';
    var FPGSS = '<a href="'+flashCPLink+'" title="Flash Player Global Security Settings">FPGSS</a>';
    if (!self._disabled) {
      self._writeDebug('soundManager: JS-&gt;Flash communication failed. Possible causes: flash/browser security restrictions ('+flashCPL+'), insufficient browser/plugin support, or .swf not found',2);
      self._writeDebug('Verify that the movie path of <em>'+self.url+'</em> is correct (<a href="'+self.url+'" title="If you get a 404/not found, fix it!">test link</a>)',1);
      if (self._didAppend) {
        if (!document.domain) {
          self._writeDebug('Loading from local file system? (document.domain appears to be null, this URL path may need to be added to \'trusted locations\' in '+FPGSS+')',1);
          self._writeDebug('Possible security/domain restrictions ('+flashCPL+'), should work when served by http on same domain',1);
        }
        // self._writeDebug('Note: Movie added via JS method, static object/embed in-page markup method may work instead.');
      }
      self.disable();
    }
  }

  this._createMovie = function(smID,smURL) {
    if (self._didAppend && self._appendSuccess) return false; // ignore if already succeeded
    if (window.location.href.indexOf('debug=1')+1) self.debugMode = true; // allow force of debug mode via URL
    self._didAppend = true;
    var html = ['<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="16" height="16" id="'+smID+'"><param name="movie" value="'+smURL+'"><param name="quality" value="high"><param name="allowScriptAccess" value="always" /></object>','<embed name="'+smID+'-embed" id="'+smID+'-embed" src="'+smURL+'" width="1" height="1" quality="high" allowScriptAccess="always" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash"></embed>'];
    var toggleElement = '<div id="'+self.debugID+'-toggle" style="position:fixed;_position:absolute;right:0px;bottom:0px;_top:0px;width:1.2em;height:1.2em;line-height:1.2em;margin:2px;padding:0px;text-align:center;border:1px solid #999;cursor:pointer;background:#fff;color:#333;z-index:706" title="Toggle SM2 debug console" onclick="soundManager._toggleDebug()">-</div>';
    var debugHTML = '<div id="'+self.debugID+'" style="display:'+(self.debugMode && ((!self._hasConsole||!self.useConsole)||(self.useConsole && self._hasConsole && !self.consoleOnly))?'block':'none')+';opacity:0.85"></div>';
    var appXHTML = 'soundManager._createMovie(): appendChild/innerHTML set failed. Serving application/xhtml+xml MIME type? Browser may be enforcing strict rules, not allowing write to innerHTML. (PS: If so, this means your commitment to XML validation is going to break stuff now, because this part isn\'t finished yet. ;))';

    var sHTML = '<div style="position:absolute;left:-256px;top:-256px;width:1px;height:1px" class="movieContainer">'+html[self.isIE?0:1]+'</div>'+(self.debugMode && ((!self._hasConsole||!self.useConsole)||(self.useConsole && self._hasConsole && !self.consoleOnly)) && !document.getElementById(self.debugID)?'x'+debugHTML+toggleElement:'');

    var oTarget = (document.body?document.body:document.getElementsByTagName('div')[0]);
    if (oTarget) {
      self.oMC = document.createElement('div');
      self.oMC.className = 'movieContainer';
      // "hide" flash movie
      self.oMC.style.position = 'absolute';
      self.oMC.style.left = '-256px';
      self.oMC.style.width = '1px';
      self.oMC.style.height = '1px';
      try {
        oTarget.appendChild(self.oMC);
        self.oMC.innerHTML = html[self.isIE?0:1];
        self._appendSuccess = true;
      } catch(e) {
        // may fail under app/xhtml+xml - has yet to be tested
        throw new Error(appXHTML);
      }
      if (!document.getElementById(self.debugID) && ((!self._hasConsole||!self.useConsole)||(self.useConsole && self._hasConsole && !self.consoleOnly))) {
        var oDebug = document.createElement('div');
        oDebug.id = self.debugID;
        oDebug.style.display = (self.debugMode?'block':'none');
        if (self.debugMode) {
          try {
            var oD = document.createElement('div');
            oTarget.appendChild(oD);
            oD.innerHTML = toggleElement;
          } catch(e) {
            throw new Error(appXHTML);
          }
        }
        oTarget.appendChild(oDebug);
      }
      oTarget = null;
    }
    self._writeDebug('-- SoundManager 2 Version '+self.version.substr(1)+' --',1);
    self._writeDebug('soundManager._createMovie(): trying to load <a href="'+smURL+'" title="Test this link (404=bad)">'+smURL+'</a>',1);
  }

  this._writeDebug = function(sText,sType) {
    if (!self.debugMode) return false;
    if (self._hasConsole && self.useConsole) {
      console[self._debugLevels[sType]||'log'](sText); // firebug et al
      if (self.useConsoleOnly) return true;
    }
    var sDID = 'soundmanager-debug';
    try {
      var o = document.getElementById(sDID);
      if (!o) return false;
      var p = document.createElement('div');
      p.innerHTML = sText;
      // o.appendChild(p); // top-to-bottom
      o.insertBefore(p,o.firstChild); // bottom-to-top
    } catch(e) {
      // oh well
    }
    o = null;
  }
  this._writeDebug._protected = true;

  this._writeDebugAlert = function(sText) { alert(sText); }

  if (window.location.href.indexOf('debug=alert')+1) {
    self.debugMode = true;
    self._writeDebug = self._writeDebugAlert;
  }

  this._toggleDebug = function() {
    var o = document.getElementById(self.debugID);
    var oT = document.getElementById(self.debugID+'-toggle');
    if (!o) return false;
    if (self._debugOpen) {
      // minimize
      oT.innerHTML = '+';
      o.style.display = 'none';
    } else {
      oT.innerHTML = '-';
      o.style.display = 'block';
    }
    self._debugOpen = !self._debugOpen;
  }

  this._toggleDebug._protected = true;

  this._debug = function() {
    self._writeDebug('soundManager._debug(): sounds by id/url:',0);
    for (var i=0,j=self.soundIDs.length; i<j; i++) {
      self._writeDebug(self.sounds[self.soundIDs[i]].sID+' | '+self.sounds[self.soundIDs[i]].url,0);
    }
  }

  this._mergeObjects = function(oMain,oAdd) {
    // non-destructive merge
    var o1 = oMain;
    var o2 = (typeof oAdd == 'undefined'?self.defaultOptions:oAdd);
    for (var o in o2) {
      if (typeof o1[o] == 'undefined') o1[o] = o2[o];
    }
    return o1;
  }

  this.createMovie = function(sURL) {
    if (sURL) self.url = sURL;
    self._initMovie();
  }

  this._initMovie = function() {
    // attempt to get, or create, movie
    if (self.o) return false; // pre-init may have fired this function before window.onload(), may already exist
    self.o = self.getMovie(self.id); // try to get flash movie (inline markup)
    if (!self.o) {
      // try to create
      self._createMovie(self.id,self.url);
      self.o = self.getMovie(self.id);
    }
    if (self.o) {
      self._writeDebug('soundManager._initMovie(): Got '+self.o.nodeName+' element ('+(self._didAppend?'created via JS':'static HTML')+')',1);
    }
  }

  this.initComplete = function() {
    if (self._didInit) return false;
    self._didInit = true;
    self._writeDebug('-- SoundManager 2 '+(self._disabled?'failed to load':'loaded')+' ('+(self._disabled?'security/load error':'OK')+') --',1);
    if (self._disabled) {
      self._writeDebug('soundManager.initComplete(): calling soundManager.onerror()',1);
      self.onerror.apply(window);
      return false;
    }
    self._writeDebug('soundManager.initComplete(): calling soundManager.onload()',1);
    try {
      // call user-defined "onload", scoped to window
      self.onload.apply(window);
    } catch(e) {
      // something broke (likely JS error in user function)
      self._writeDebug('soundManager.onload() threw an exception: '+e.message,2);
      throw e; // (so browser/console gets message)
    }
    self._writeDebug('soundManager.onload() complete',1);
  }

  this.init = function() {
    // called after onload()
    // self._initMovie();
    // event cleanup
    if (window.removeEventListener) {
      window.removeEventListener('load',self.beginInit,false);
    } else if (window.detachEvent) {
      window.detachEvent('onload',self.beginInit);
    }
    try {
      self.o._externalInterfaceTest(); // attempt to talk to Flash
      self._writeDebug('Flash ExternalInterface call (JS -&gt; Flash) succeeded.',1);
      if (!self.allowPolling) self._writeDebug('Polling (whileloading/whileplaying support) is disabled.',1);
      self.s