/**

 * Copyright (c) 2007, Carl S. Yestrau

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above copyright

 *       notice, this list of conditions and the following disclaimer in the

 *       documentation and/or other materials provided with the distribution.

 *     * Neither the name of Feature Blend nor the

 *       names of its contributors may be used to endorse or promote products

 *       derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY Carl S. Yestrau ''AS IS'' AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL Carl S. Yestrau BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 */

function FlashDetectBase(options){

	var self = this;

	var _release = "1.0";

	var options = options || {};

	self.installed = false;

	self.major = -1;

	self.minor = -1;

	self.revision = -1;

	self.revisionStr = "";

	self.activeXVersion = "";

	var activeXDetectRules = options.activeXDetectRules || [

		{

			"name":"ShockwaveFlash.ShockwaveFlash.7",

			"version":function(obj){return getActiveXVersion(obj);}

		},

		{

			"name":"ShockwaveFlash.ShockwaveFlash.6",

			"version":function(obj){

//				var version = "6,-1,-1,-1";

				var version = "6,0,21";

				try{

					obj.AllowScriptAccess = "always";

					version = getActiveXVersion(obj);

				}catch(err){}

				return version;

			}

		},

		{

			"name":"ShockwaveFlash.ShockwaveFlash",

			"version":function(obj){return getActiveXVersion(obj);}

		}

	];

	var getActiveXVersion = function(activeXObj){

		var version = -1;

		try{

			version = activeXObj.GetVariable("$version");

		}catch(err){}

		return version;

	}

	var getActiveXObject = function(name){

		var obj = -1;

		try{

			obj = new ActiveXObject(name);

		}catch(err){}

		return obj;

	}

	var parseActiveXVersion = function(str){

		var versionArray = str.split(",");

		return {

			"major":parseInt(versionArray[0].split(" ")[1]),

			"minor":parseInt(versionArray[1]),

			"revision":parseInt(versionArray[2]),

			"revisionStr":versionArray[2]

		};

	}

	var parseRevisionStrToInt = function(str){

		return parseInt(str.replace(/[a-zA-Z]/g,"")) || self.revision;

	}

	self.majorAtLeast = function(version){

		return self.major >= version;

	}

	self.DetectBase = function(){

		if(navigator.plugins && navigator.plugins.length>0){

			var type = 'application/x-shockwave-flash';

			var mimeTypes = navigator.mimeTypes;

			if(mimeTypes && mimeTypes[type] && mimeTypes[type].enabledPlugin && mimeTypes[type].enabledPlugin.description){

				var desc = mimeTypes[type].enabledPlugin.description;

				var descParts = desc.split(' ');

				var majorMinor = descParts[2].split('.');

				self.major = parseInt(majorMinor[0]);

				self.minor = parseInt(majorMinor[1]); 

				self.revisionStr = descParts[3];

				self.revision = parseRevisionStrToInt(self.revisionStr);

				self.installed = true;

			}

		}else if(navigator.appVersion.indexOf("Mac")==-1 && window.execScript){

			var version = -1;

			for(var i=0; i<activeXDetectRules.length && version==-1; i++){

				var obj = getActiveXObject(activeXDetectRules[i].name);

				if(typeof obj == "object"){

					self.installed = true;

					version = activeXDetectRules[i].version(obj);

					if(version!=-1){

						var versionObj = parseActiveXVersion(version);

						self.major = versionObj.major;

						self.minor = versionObj.minor; 

						self.revision = versionObj.revision;

						self.revisionStr = versionObj.revisionStr;

						self.activeXVersion = version;

					}

				}

			}

		}

	}();

}

var FlashDetect = new FlashDetectBase();