/*
 * jquery media plugin for converting elements into rich media content.
 *
 * examples and documentation at: http://malsup.com/jquery/media/
 * copyright (c) 2007-2010 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: 0.97 (20-may-2011)
 * @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($) {

var lameie = $.browser.msie && $.browser.version < 9;

/**
 * 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:  true,       // 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:	'black', 	// 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:	{autostart:true},			// 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
	img: {
		name:  'img',
		title: 'image',
		types: 'gif,png,jpg'
	},
	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(/\bw:(\d+)/)||[])[1]||0)) || parseint(((cls.match(/\bwidth:(\d+)/)||[])[1]||0));
	var h = meta.height || parseint(((cls.match(/\bh:(\d+)/)||[])[1]||0)) || parseint(((cls.match(/\bheight:(\d+)/)||[])[1]||0))

	if (w) meta.width	= w;
	if (h) meta.height = h;
	if (cls) meta.cls = cls;
	
	// crank html5 style data attributes
	var dataname = 'data-';
    for (var i=0; i < el.attributes.length; i++) {
        var a = el.attributes[i], n = $.trim(a.name);
        var index = n.indexof(dataname);
        if (index === 0) {
        	n = n.substring(dataname.length);
        	meta[n] = a.value;
        }
    }

	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) ? opts.mp3player : opts.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') {
		o = $('<iframe' + ' width="' + opts.width + '" height="' + opts.height + '" >');
		o.attr('src', opts.src);
		o.css('backgroundcolor', o.bgcolor);
	}
	else if (player == 'img') {
		o = $('<img>');
		o.attr('src', opts.src);
		opts.width && o.attr('width', opts.width);
		opts.height && o.attr('height', opts.height);
		o.css('backgroundcolor', o.bgcolor);
	}
	else if (lameie) {
		var a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];
		for (var key in opts.attrs)
			a.push(key + '="'+opts.attrs[key]+'" ');
		for (var key in o.ieattrs || {}) {
			var v = o.ieattrs[key];
			if (key == 'codebase' && window.location.protocol == 'https:')
				v = v.replace('http','https');
			a.push(key + '="'+v+'" ');
		}
		a.push('></ob'+'ject'+'>');
		var p = ['<param name="' + (o.ourl || 'src') +'" value="' + opts.src + '">'];
		for (var key in opts.params)
			p.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
		p.push('<param name="allowscriptaccess" value="always"/>');
		p.push('<param name="allowfullscreen" value="true"/>');
		var o = document.createelement(a.join(''));
		for (var i=0; i < p.length; i++)
			o.appendchild(document.createelement(p[i]));
	}
	else if (opts.standards) {
		// rewritten to be standards compliant by richard connamacher
		var a = ['<object type="' + o.mimetype +'" width="' + opts.width + '" height="' + opts.height +'"'];
		if (opts.src) a.push(' data="' + opts.src + '" ');
		if ($.browser.msie) {
			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('>');
		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] + '">');
		}		
		a.push('<param name="allowscriptaccess" value="always"/>');
		a.push('<param name="allowfullscreen" value="true"/>');
		// 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();
	(lameie || player == 'iframe' || player == 'img') ? $div.append(o) : $div.html(a.join(''));
	if (opts.caption) $('<div>').appendto($div).html(opts.caption);
	return $div;
};


})(jquery);