/**
 * flash (http://jquery.lukelutman.com/plugins/flash)
 * a jquery plugin for embedding flash movies.
 * 
 * version 1.0
 * november 9th, 2006
 *
 * copyright (c) 2006 luke lutman (http://www.lukelutman.com)
 * dual licensed under the mit and gpl licenses.
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.opensource.org/licenses/gpl-license.php
 * 
 * inspired by:
 * swfobject (http://blog.deconcept.com/swfobject/)
 * ufo (http://www.bobbyvandersluis.com/ufo/)
 * sifr (http://www.mikeindustries.com/sifr/)
 * 
 * important: 
 * the packed version of jquery breaks activex control
 * activation in internet explorer. use jsmin to minifiy
 * jquery (see: http://jquery.lukelutman.com/plugins/flash#activex).
 *
 **/ 
;(function(){
	
var $$;

/**
 * 
 * @desc replace matching elements with a flash movie.
 * @author luke lutman
 * @version 1.0.1
 *
 * @name flash
 * @param hash htmloptions options for the embed/object tag.
 * @param hash pluginoptions options for detecting/updating the flash plugin (optional).
 * @param function replace custom block called for each matched element if flash is installed (optional).
 * @param function update custom block called for each matched if flash isn't installed (optional).
 * @type jquery
 *
 * @cat plugins/flash
 * 
 * @example $('#hello').flash({ src: 'hello.swf' });
 * @desc embed a flash movie.
 *
 * @example $('#hello').flash({ src: 'hello.swf' }, { version: 8 });
 * @desc embed a flash 8 movie.
 *
 * @example $('#hello').flash({ src: 'hello.swf' }, { expressinstall: true });
 * @desc embed a flash movie using express install if flash isn't installed.
 *
 * @example $('#hello').flash({ src: 'hello.swf' }, { update: false });
 * @desc embed a flash movie, don't show an update message if flash isn't installed.
 *
**/
$$ = jquery.fn.flash = function(htmloptions, pluginoptions, replace, update) {
	
	// set the default block.
	var block = replace || $$.replace;
	
	// merge the default and passed plugin options.
	pluginoptions = $$.copy($$.pluginoptions, pluginoptions);
	
	// detect flash.
	if(!$$.hasflash(pluginoptions.version)) {
		// use express install (if specified and flash plugin 6,0,65 or higher is installed).
		if(pluginoptions.expressinstall && $$.hasflash(6,0,65)) {
			// add the necessary flashvars (merged later).
			var expressinstalloptions = {
				flashvars: {  	
					mmredirecturl: location,
					mmplayertype: 'plugin',
					mmdoctitle: jquery('title').text() 
				}					
			};
		// ask the user to update (if specified).
		} else if (pluginoptions.update) {
			// change the block to insert the update message instead of the flash movie.
			block = update || $$.update;
		// fail
		} else {
			// the required version of flash isn't installed.
			// express install is turned off, or flash 6,0,65 isn't installed.
			// update is turned off.
			// return without doing anything.
			return this;
		}
	}
	
	// merge the default, express install and passed html options.
	htmloptions = $$.copy($$.htmloptions, expressinstalloptions, htmloptions);
	
	// invoke $block (with a copy of the merged html options) for each element.
	return this.each(function(){
		block.call(this, $$.copy(htmloptions));
	});
	
};
/**
 *
 * @name flash.copy
 * @desc copy an arbitrary number of objects into a new object.
 * @type object
 * 
 * @example $$.copy({ foo: 1 }, { bar: 2 });
 * @result { foo: 1, bar: 2 };
 *
**/
$$.copy = function() {
	var options = {}, flashvars = {};
	for(var i = 0; i < arguments.length; i++) {
		var arg = arguments[i];
		if(arg == undefined) continue;
		jquery.extend(options, arg);
		// don't clobber one flash vars object with another
		// merge them instead
		if(arg.flashvars == undefined) continue;
		jquery.extend(flashvars, arg.flashvars);
	}
	options.flashvars = flashvars;
	return options;
};
/*
 * @name flash.hasflash
 * @desc check if a specific version of the flash plugin is installed
 * @type boolean
 *
**/
$$.hasflash = function() {
	// look for a flag in the query string to bypass flash detection
	if(/hasflash\=true/.test(location)) return true;
	if(/hasflash\=false/.test(location)) return false;
	var pv = $$.hasflash.playerversion().match(/\d+/g);
	var rv = string([arguments[0], arguments[1], arguments[2]]).match(/\d+/g) || string($$.pluginoptions.version).match(/\d+/g);
	for(var i = 0; i < 3; i++) {
		pv[i] = parseint(pv[i] || 0);
		rv[i] = parseint(rv[i] || 0);
		// player is less than required
		if(pv[i] < rv[i]) return false;
		// player is greater than required
		if(pv[i] > rv[i]) return true;
	}
	// major version, minor version and revision match exactly
	return true;
};
/**
 *
 * @name flash.hasflash.playerversion
 * @desc get the version of the installed flash plugin.
 * @type string
 *
**/
$$.hasflash.playerversion = function() {
	// ie
	try {
		try {
			// avoid fp6 minor version lookup issues
			// see: http://blog.deconcept.com/2006/01/11/getvariable-setvariable-crash-internet-explorer-flash-6/
			var axo = new activexobject('shockwaveflash.shockwaveflash.6');
			try { axo.allowscriptaccess = 'always';	} 
			catch(e) { return '6,0,0'; }				
		} catch(e) {}
		return new activexobject('shockwaveflash.shockwaveflash').getvariable('$version').replace(/\d+/g, ',').match(/^,?(.+),?$/)[1];
	// other browsers
	} catch(e) {
		try {
			if(navigator.mimetypes["application/x-shockwave-flash"].enabledplugin){
				return (navigator.plugins["shockwave flash 2.0"] || navigator.plugins["shockwave flash"]).description.replace(/\d+/g, ",").match(/^,?(.+),?$/)[1];
			}
		} catch(e) {}		
	}
	return '0,0,0';
};
/**
 *
 * @name flash.htmloptions
 * @desc the default set of options for the object or embed tag.
 *
**/
$$.htmloptions = {
	height: 240,
	flashvars: {},
	pluginspage: 'http://www.adobe.com/go/getflashplayer',
	src: '#',
	type: 'application/x-shockwave-flash',
	width: 320		
};
/**
 *
 * @name flash.pluginoptions
 * @desc the default set of options for checking/updating the flash plugin.
 *
**/
$$.pluginoptions = {
	expressinstall: false,
	update: true,
	version: '6.0.65'
};
/**
 *
 * @name flash.replace
 * @desc the default method for replacing an element with a flash movie.
 *
**/
$$.replace = function(htmloptions) {
	this.innerhtml = '<div class="alt">'+this.innerhtml+'</div>';
	jquery(this)
		.addclass('flash-replaced')
		.prepend($$.transform(htmloptions));
};
/**
 *
 * @name flash.update
 * @desc the default method for replacing an element with an update message.
 *
**/
$$.update = function(htmloptions) {
	var url = string(location).split('?');
	url.splice(1,0,'?hasflash=true&');
	url = url.join('');
	var msg = '<p>this content requires the flash player. <a href="http://www.adobe.com/go/getflashplayer">download flash player</a>. already have flash player? <a href="'+url+'">click here.</a></p>';
	this.innerhtml = '<span class="alt">'+this.innerhtml+'</span>';
	jquery(this)
		.addclass('flash-update')
		.prepend(msg);
};
/**
 *
 * @desc convert a hash of html options to a string of attributes, using function.apply(). 
 * @example toattributestring.apply(htmloptions)
 * @result foo="bar" foo="bar"
 *
**/
function toattributestring() {
	var s = '';
	for(var key in this)
		if(typeof this[key] != 'function')
			s += key+'="'+this[key]+'" ';
	return s;		
};
/**
 *
 * @desc convert a hash of flashvars to a url-encoded string, using function.apply(). 
 * @example toflashvarsstring.apply(flashvarsobject)
 * @result foo=bar&foo=bar
 *
**/
function toflashvarsstring() {
	var s = '';
	for(var key in this)
		if(typeof this[key] != 'function')
			s += key+'='+encodeuricomponent(this[key])+'&';
	return s.replace(/&$/, '');		
};
/**
 *
 * @name flash.transform
 * @desc transform a set of html options into an embed tag.
 * @type string 
 *
 * @example $$.transform(htmloptions)
 * @result <embed src="foo.swf" ... />
 *
 * note: the embed tag is not standards-compliant, but it 
 * works in all current browsers. flash.transform can be
 * overwritten with a custom function to generate more 
 * standards-compliant markup.
 *
**/
$$.transform = function(htmloptions) {
	htmloptions.tostring = toattributestring;
	if(htmloptions.flashvars) htmloptions.flashvars.tostring = toflashvarsstring;
	return '<embed ' + string(htmloptions) + '/>';		
};

/**
 *
 * flash player 9 fix (http://blog.deconcept.com/2006/07/28/swfobject-143-released/)
 *
**/
if (window.attachevent) {
	window.attachevent("onbeforeunload", function(){
		__flash_unloadhandler = function() {};
		__flash_savedunloadhandler = function() {};
	});
}
	
})();