/**
* 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() { };
    });
  }

})();