/*
* jQuery Media Plugin for converting elements into rich media content.
*
* Examples and documentation at: http://malsup.com/jquery/media/
* Copyright (c) 2007-2008 M. Alsup
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* @author: M. Alsup
* @version: 0.92 (24-SEP-2009)
* @requires jQuery v1.1.2 or later
* $Id: jquery.media.js 2460 2007-07-23 02:53:15Z malsup $
*
* Supported Media Players:
*	- Flash
*	- Quicktime
*	- Real Player
*	- Silverlight
*	- Windows Media Player
*	- iframe
*
* Supported Media Formats:
*	 Any types supported by the above players, such as:
*	 Video: asf, avi, flv, mov, mpg, mpeg, mp4, qt, smil, swf, wmv, 3g2, 3gp
*	 Audio: aif, aac, au, gsm, mid, midi, mov, mp3, m4a, snd, rm, wav, wma
*	 Other: bmp, html, pdf, psd, qif, qtif, qti, tif, tiff, xaml
*
* Thanks to Mark Hicken and Brent Pedersen for helping me debug this on the Mac!
* Thanks to Dan Rossi for numerous bug reports and code bits!
* Thanks to Skye Giordano for several great suggestions!
* Thanks to Richard Connamacher for excellent improvements to the non-IE behavior!
*/
; (function ($) {

  /**
  * Chainable method for converting elements into rich media.
  *
  * @param options
  * @param callback fn invoked for each matched element before conversion
  * @param callback fn invoked for each matched element after conversion
  */
  $.fn.media = function (options, f1, f2) {
    if (options == 'undo') {
      return this.each(function () {
        var $this = $(this);
        var html = $this.data('media.origHTML');
        if (html)
          $this.replaceWith(html);
      });
    }

    return this.each(function () {
      if (typeof options == 'function') {
        f2 = f1;
        f1 = options;
        options = {};
      }
      var o = getSettings(this, options);
      // pre-conversion callback, passes original element and fully populated options
      if (typeof f1 == 'function') f1(this, o);

      var r = getTypesRegExp();
      var m = r.exec(o.src.toLowerCase()) || [''];

      o.type ? m[0] = o.type : m.shift();
      for (var i = 0; i < m.length; i++) {
        fn = m[i].toLowerCase();
        if (isDigit(fn[0])) fn = 'fn' + fn; // fns can't begin with numbers
        if (!$.fn.media[fn])
          continue;  // unrecognized media type
        // normalize autoplay settings
        var player = $.fn.media[fn + '_player'];
        if (!o.params) o.params = {};
        if (player) {
          var num = player.autoplayAttr == 'autostart';
          o.params[player.autoplayAttr || 'autoplay'] = num ? (o.autoplay ? 1 : 0) : o.autoplay ? true : false;
        }
        var $div = $.fn.media[fn](this, o);

        $div.css('backgroundColor', o.bgColor).width(o.width);

        if (o.canUndo) {
          var $temp = $('<div></div>').append(this);
          $div.data('media.origHTML', $temp.html()); // store original markup
        }

        // post-conversion callback, passes original element, new div element and fully populated options
        if (typeof f2 == 'function') f2(this, $div[0], o, player.name);
        break;
      }
    });
  };

  /**
  * Non-chainable method for adding or changing file format / player mapping
  * @name mapFormat
  * @param String format File format extension (ie: mov, wav, mp3)
  * @param String player Player name to use for the format (one of: flash, quicktime, realplayer, winmedia, silverlight or iframe
  */
  $.fn.media.mapFormat = function (format, player) {
    if (!format || !player || !$.fn.media.defaults.players[player]) return; // invalid
    format = format.toLowerCase();
    if (isDigit(format[0])) format = 'fn' + format;
    $.fn.media[format] = $.fn.media[player];
    $.fn.media[format + '_player'] = $.fn.media.defaults.players[player];
  };

  // global defautls; override as needed
  $.fn.media.defaults = {
    standards: false,      // use object tags only (no embeds for non-IE browsers)
    canUndo: true,       // tells plugin to store the original markup so it can be reverted via: $(sel).mediaUndo()
    width: 400,
    height: 400,
    autoplay: 0, 	   	// normalized cross-player setting
    bgColor: '#ffffff', 	// background color
    params: { wmode: 'transparent' }, // added to object element as param elements; added to embed element as attrs
    attrs: {}, 		// added to object and embed elements as attrs
    flvKeyName: 'file', 	// key used for object src param (thanks to Andrea Ercolino)
    flashvars: {}, 		// added to flash content as flashvars param/attr
    flashVersion: '7', // required flash version
    expressInstaller: null, // src for express installer

    // default flash video and mp3 player (@see: http://jeroenwijering.com/?item=Flash_Media_Player)
    flvPlayer: 'mediaplayer.swf',
    mp3Player: 'mediaplayer.swf',

    // @see http://msdn2.microsoft.com/en-us/library/bb412401.aspx
    silverlight: {
      inplaceInstallPrompt: 'true', // display in-place install prompt?
      isWindowless: 'true', // windowless mode (false for wrapping markup)
      framerate: '24',   // maximum framerate
      version: '0.9',  // Silverlight version
      onError: null,   // onError callback
      onLoad: null,   // onLoad callback
      initParams: null,   // object init params
      userContext: null	  // callback arg passed to the load callback
    }
  };

  // Media Players; think twice before overriding
  $.fn.media.defaults.players = {
    flash: {
      name: 'flash',
      title: 'Flash',
      types: 'flv,mp3,swf',
      mimetype: 'application/x-shockwave-flash',
      pluginspage: 'http://www.adobe.com/go/getflashplayer',
      ieAttrs: {
        classid: 'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000',
        type: 'application/x-oleobject',
        codebase: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + $.fn.media.defaults.flashVersion
      }
    },
    quicktime: {
      name: 'quicktime',
      title: 'QuickTime',
      mimetype: 'video/quicktime',
      pluginspage: 'http://www.apple.com/quicktime/download/',
      types: 'aif,aiff,aac,au,bmp,gsm,mov,mid,midi,mpg,mpeg,mp4,m4a,psd,qt,qtif,qif,qti,snd,tif,tiff,wav,3g2,3gp',
      ieAttrs: {
        classid: 'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B',
        codebase: 'http://www.apple.com/qtactivex/qtplugin.cab'
      }
    },
    realplayer: {
      name: 'real',
      title: 'RealPlayer',
      types: 'ra,ram,rm,rpm,rv,smi,smil',
      mimetype: 'audio/x-pn-realaudio-plugin',
      pluginspage: 'http://www.real.com/player/',
      autoplayAttr: 'autostart',
      ieAttrs: {
        classid: 'clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA'
      }
    },
    winmedia: {
      name: 'winmedia',
      title: 'Windows Media',
      types: 'asx,asf,avi,wma,wmv',
      mimetype: $.browser.mozilla && isFirefoxWMPPluginInstalled() ? 'application/x-ms-wmp' : 'application/x-mplayer2',
      pluginspage: 'http://www.microsoft.com/Windows/MediaPlayer/',
      autoplayAttr: 'autostart',
      oUrl: 'url',
      ieAttrs: {
        classid: 'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6',
        type: 'application/x-oleobject'
      }
    },
    // special cases
    iframe: {
      name: 'iframe',
      types: 'html,pdf'
    },
    silverlight: {
      name: 'silverlight',
      types: 'xaml'
    }
  };

  //
  //	everything below here is private
  //


  // detection script for FF WMP plugin (http://www.therossman.org/experiments/wmp_play.html)
  // (hat tip to Mark Ross for this script)
  function isFirefoxWMPPluginInstalled() {
    var plugs = navigator.plugins;
    for (var i = 0; i < plugs.length; i++) {
      var plugin = plugs[i];
      if (plugin['filename'] == 'np-mswmp.dll')
        return true;
    }
    return false;
  }

  var counter = 1;

  for (var player in $.fn.media.defaults.players) {
    var types = $.fn.media.defaults.players[player].types;
    $.each(types.split(','), function (i, o) {
      if (isDigit(o[0])) o = 'fn' + o;
      $.fn.media[o] = $.fn.media[player] = getGenerator(player);
      $.fn.media[o + '_player'] = $.fn.media.defaults.players[player];
    });
  };

  function getTypesRegExp() {
    var types = '';
    for (var player in $.fn.media.defaults.players) {
      if (types.length) types += ',';
      types += $.fn.media.defaults.players[player].types;
    };
    return new RegExp('\\.(' + types.replace(/,/ig, '|') + ')\\b');
  };

  function getGenerator(player) {
    return function (el, options) {
      return generate(el, options, player);
    };
  };

  function isDigit(c) {
    return '0123456789'.indexOf(c) > -1;
  };

  // flatten all possible options: global defaults, meta, option obj
  function getSettings(el, options) {
    options = options || {};
    var $el = $(el);
    var cls = el.className || '';
    // support metadata plugin (v1.0 and v2.0)
    var meta = $.metadata ? $el.metadata() : $.meta ? $el.data() : {};
    meta = meta || {};
    var w = meta.width || parseInt(((cls.match(/w:(\d+)/) || [])[1] || 0));
    var h = meta.height || parseInt(((cls.match(/h:(\d+)/) || [])[1] || 0));

    if (w) meta.width = w;
    if (h) meta.height = h;
    if (cls) meta.cls = cls;

    var a = $.fn.media.defaults;
    var b = options;
    var c = meta;

    var p = { params: { bgColor: options.bgColor || $.fn.media.defaults.bgColor} };
    var opts = $.extend({}, a, b, c);
    $.each(['attrs', 'params', 'flashvars', 'silverlight'], function (i, o) {
      opts[o] = $.extend({}, p[o] || {}, a[o] || {}, b[o] || {}, c[o] || {});
    });

    if (typeof opts.caption == 'undefined') opts.caption = $el.text();

    // make sure we have a source!
    opts.src = opts.src || $el.attr('href') || $el.attr('src') || 'unknown';
    return opts;
  };

  //
  //	Flash Player
  //

  // generate flash using SWFObject library if possible
  $.fn.media.swf = function (el, opts) {
    if (!window.SWFObject && !window.swfobject) {
      // roll our own
      if (opts.flashvars) {
        var a = [];
        for (var f in opts.flashvars)
          a.push(f + '=' + opts.flashvars[f]);
        if (!opts.params) opts.params = {};
        opts.params.flashvars = a.join('&');
      }
      return generate(el, opts, 'flash');
    }

    var id = el.id ? (' id="' + el.id + '"') : '';
    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
    var $div = $('<div' + id + cls + '>');

    // swfobject v2+
    if (window.swfobject) {
      $(el).after($div).appendTo($div);
      if (!el.id) el.id = 'movie_player_' + counter++;

      // replace el with swfobject content
      swfobject.embedSWF(opts.src, el.id, opts.width, opts.height, opts.flashVersion,
			opts.expressInstaller, opts.flashvars, opts.params, opts.attrs);
    }
    // swfobject < v2
    else {
      $(el).after($div).remove();
      var so = new SWFObject(opts.src, 'movie_player_' + counter++, opts.width, opts.height, opts.flashVersion, opts.bgColor);
      if (opts.expressInstaller) so.useExpressInstall(opts.expressInstaller);

      for (var p in opts.params)
        if (p != 'bgColor') so.addParam(p, opts.params[p]);
      for (var f in opts.flashvars)
        so.addVariable(f, opts.flashvars[f]);
      so.write($div[0]);
    }

    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
    return $div;
  };

  // map flv and mp3 files to the swf player by default
  $.fn.media.flv = $.fn.media.mp3 = function (el, opts) {
    var src = opts.src;
    var player = /\.mp3\b/i.test(src) ? $.fn.media.defaults.mp3Player : $.fn.media.defaults.flvPlayer;
    var key = opts.flvKeyName;
    src = encodeURIComponent(src);
    opts.src = player;
    opts.src = opts.src + '?' + key + '=' + (src);
    var srcObj = {};
    srcObj[key] = src;
    opts.flashvars = $.extend({}, srcObj, opts.flashvars);
    return $.fn.media.swf(el, opts);
  };

  //
  //	Silverlight
  //
  $.fn.media.xaml = function (el, opts) {
    if (!window.Sys || !window.Sys.Silverlight) {
      if ($.fn.media.xaml.warning) return;
      $.fn.media.xaml.warning = 1;
      alert('You must include the Silverlight.js script.');
      return;
    }

    var props = {
      width: opts.width,
      height: opts.height,
      background: opts.bgColor,
      inplaceInstallPrompt: opts.silverlight.inplaceInstallPrompt,
      isWindowless: opts.silverlight.isWindowless,
      framerate: opts.silverlight.framerate,
      version: opts.silverlight.version
    };
    var events = {
      onError: opts.silverlight.onError,
      onLoad: opts.silverlight.onLoad
    };

    var id1 = el.id ? (' id="' + el.id + '"') : '';
    var id2 = opts.id || 'AG' + counter++;
    // convert element to div
    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
    var $div = $('<div' + id1 + cls + '>');
    $(el).after($div).remove();

    Sys.Silverlight.createObjectEx({
      source: opts.src,
      initParams: opts.silverlight.initParams,
      userContext: opts.silverlight.userContext,
      id: id2,
      parentElement: $div[0],
      properties: props,
      events: events
    });

    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
    return $div;
  };

  //
  // generate object/embed markup
  //
  function generate(el, opts, player) {
    var $el = $(el);
    var o = $.fn.media.defaults.players[player];

    if (player == 'iframe') {
      var o = $('<iframe' + ' width="' + opts.width + '" height="' + opts.height + '" >');
      o.attr('src', opts.src);
      o.css('backgroundColor', o.bgColor);
    }
    else if ($.browser.msie) {
      var a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];
      for (var key in opts.attrs)
        a.push(key + '="' + opts.attrs[key] + '" ');
      for (var key in o.ieAttrs || {}) {
        var v = o.ieAttrs[key];
        if (key == 'codebase' && window.location.protocol == 'https:')
          v = v.replace('http', 'https');
        a.push(key + '="' + v + '" ');
      }
      a.push('></ob' + 'ject' + '>');
      var p = ['<param name="' + (o.oUrl || 'src') + '" value="' + opts.src + '">'];
      for (var key in opts.params)
        p.push('<param name="' + key + '" value="' + opts.params[key] + '">');
      var o = document.createElement(a.join(''));
      for (var i = 0; i < p.length; i++)
        o.appendChild(document.createElement(p[i]));
    }
    else if (o.standards) {
      // Rewritten to be standards compliant by Richard Connamacher
      var a = ['<object type="' + o.mimetype + '" width="' + opts.width + '" height="' + opts.height + '"'];
      if (opts.src) a.push(' data="' + opts.src + '" ');
      a.push('>');
      a.push('<param name="' + (o.oUrl || 'src') + '" value="' + opts.src + '">');
      for (var key in opts.params) {
        if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
          continue;
        a.push('<param name="' + key + '" value="' + opts.params[key] + '">');
      }
      // Alternate HTML
      a.push('<div><p><strong>' + o.title + ' Required</strong></p><p>' + o.title + ' is required to view this media. <a href="' + o.pluginspage + '">Download Here</a>.</p></div>');
      a.push('</ob' + 'ject' + '>');
    }
    else {
      var a = ['<embed width="' + opts.width + '" height="' + opts.height + '" style="display:block"'];
      if (opts.src) a.push(' src="' + opts.src + '" ');
      for (var key in opts.attrs)
        a.push(key + '="' + opts.attrs[key] + '" ');
      for (var key in o.eAttrs || {})
        a.push(key + '="' + o.eAttrs[key] + '" ');
      for (var key in opts.params) {
        if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
          continue;
        a.push(key + '="' + opts.params[key] + '" ');
      }
      a.push('></em' + 'bed' + '>');
    }
    // convert element to div
    var id = el.id ? (' id="' + el.id + '"') : '';
    var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
    var $div = $('<div' + id + cls + '>');
    $el.after($div).remove();
    ($.browser.msie || player == 'iframe') ? $div.append(o) : $div.html(a.join(''));
    if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
    return $div;
  };


})(jQuery);