/*
	enthält folgende extensions:
		center
		cookie
		url
*/

/**
 * @author Alexandre Magno
 * @desc Center a element with jQuery
 * @version 1.0
 * @example
 * $("element").center({
 *
 * 		vertical: true,
 *      horizontal: true
 *
 * });
 * @obs With no arguments, the default is above
 * @license free
 * @param bool vertical, bool horizontal
 * @contribution Paulo Radichi
 *
 */
jQuery.fn.center = function(params) {

		var options = {

			vertical: true,
			horizontal: true

		}
		op = jQuery.extend(options, params);

   return this.each(function(){

		//initializing variables
		var $self = jQuery(this);
		//get the dimensions using dimensions plugin
		var width = $self.width();
		var height = $self.height();
		//get the paddings
		var paddingTop = parseInt($self.css("padding-top"));
		var paddingBottom = parseInt($self.css("padding-bottom"));
		//get the borders
		var borderTop = parseInt($self.css("border-top-width"));
		var borderBottom = parseInt($self.css("border-bottom-width"));
		//get the media of padding and borders
		var mediaBorder = (borderTop+borderBottom)/2;
		var mediaPadding = (paddingTop+paddingBottom)/2;
		//get the type of positioning
		var positionType = $self.parent().css("position");
		// get the half minus of width and height
		var halfWidth = (width/2)*(-1);
		var halfHeight = ((height/2)*(-1))-mediaPadding-mediaBorder;
		// initializing the css properties
		var cssProp = {
			position: 'absolute'
		};

		if(op.vertical) {
			cssProp.height = height;
			cssProp.top = '50%';
			cssProp.marginTop = halfHeight;
		}
		if(op.horizontal) {
			cssProp.width = width;
			cssProp.left = '50%';
			cssProp.marginLeft = halfWidth;
		}
		//check the current position
		if(positionType == 'static') {
			$self.parent().css("position","relative");
		}
		//aplying the css
		$self.css(cssProp);


   });

};




/**
 * Cookie plugin
 *
 * Copyright (c) 2006 Klaus Hartl (stilbuero.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */

/**
 * Create a cookie with the given name and value and other optional parameters.
 *
 * @example $.cookie('the_cookie', 'the_value');
 * @desc Set the value of a cookie.
 * @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
 * @desc Create a cookie with all available options.
 * @example $.cookie('the_cookie', 'the_value');
 * @desc Create a session cookie.
 * @example $.cookie('the_cookie', null);
 * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
 *       used when the cookie was set.
 *
 * @param String name The name of the cookie.
 * @param String value The value of the cookie.
 * @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
 * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
 *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
 *                             If set to null or omitted, the cookie will be a session cookie and will not be retained
 *                             when the the browser exits.
 * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
 * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
 * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
 *                        require a secure protocol (like HTTPS).
 * @type undefined
 *
 * @name $.cookie
 * @cat Plugins/Cookie
 * @author Klaus Hartl/klaus.hartl@stilbuero.de
 */

/**
 * Get the value of a cookie with the given name.
 *
 * @example $.cookie('the_cookie');
 * @desc Get the value of a cookie.
 *
 * @param String name The name of the cookie.
 * @return The value of the cookie.
 * @type String
 *
 * @name $.cookie
 * @cat Plugins/Cookie
 * @author Klaus Hartl/klaus.hartl@stilbuero.de
 */
jQuery.cookie = function(name, value, options) {
    if (typeof value != 'undefined') { // name and value given, set cookie
        options = options || {};
        if (value === null) {
            value = '';
            options.expires = -1;
        }
        var expires = '';
        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
            var date;
            if (typeof options.expires == 'number') {
                date = new Date();
                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
            } else {
                date = options.expires;
            }
            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
        }
        // CAUTION: Needed to parenthesize options.path and options.domain
        // in the following expressions, otherwise they evaluate to undefined
        // in the packed version for some reason...
        var path = options.path ? '; path=' + (options.path) : '';
        var domain = options.domain ? '; domain=' + (options.domain) : '';
        var secure = options.secure ? '; secure' : '';
        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
    } else { // only name given, get cookie
        var cookieValue = null;
        if (document.cookie && document.cookie != '') {
            var cookies = document.cookie.split(';');
            for (var i = 0; i < cookies.length; i++) {
                var cookie = jQuery.trim(cookies[i]);
                // Does this cookie string begin with the name we want?
                if (cookie.substring(0, name.length + 1) == (name + '=')) {
                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                    break;
                }
            }
        }
        return cookieValue;
    }
};

/* ===========================================================================
 *
 * JQuery URL Parser
 * Version 1.0
 * Parses URLs and provides easy access to information within them.
 *
 * Author: Mark Perkins
 * Author email: mark@allmarkedup.com
 *
 * For full documentation and more go to http://projects.allmarkedup.com/jquery_url_parser/
 *
 * ---------------------------------------------------------------------------
 *
 * CREDITS:
 *
 * Parser based on the Regex-based URI parser by Steven Levithan.
 * For more information (including a detailed explaination of the differences
 * between the 'loose' and 'strict' pasing modes) visit http://blog.stevenlevithan.com/archives/parseuri
 *
 * ---------------------------------------------------------------------------
 *
 * LICENCE:
 *
 * Released under a MIT Licence. See licence.txt that should have been supplied with this file,
 * or visit http://projects.allmarkedup.com/jquery_url_parser/licence.txt
 *
 * ---------------------------------------------------------------------------
 *
 * EXAMPLES OF USE:
 *
 * Get the domain name (host) from the current page URL
 * jQuery.url.attr("host")
 *
 * Get the query string value for 'item' for the current page
 * jQuery.url.param("item") // null if it doesn't exist
 *
 * Get the second segment of the URI of the current page
 * jQuery.url.segment(2) // null if it doesn't exist
 *
 * Get the protocol of a manually passed in URL
 * jQuery.url.setUrl("http://allmarkedup.com/").attr("protocol") // returns 'http'
 *
 */

jQuery.url = function()
{
	var segments = {};

	var parsed = {};

	/**
    * Options object. Only the URI and strictMode values can be changed via the setters below.
    */
  	var options = {

		url : window.location, // default URI is the page in which the script is running

		strictMode: false, // 'loose' parsing by default

		key: ["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"], // keys available to query

		q: {
			name: "queryKey",
			parser: /(?:^|&)([^&=]*)=?([^&]*)/g
		},

		parser: {
			strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,  //less intuitive, more accurate to the specs
			loose:  /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/ // more intuitive, fails on relative paths and deviates from specs
		}

	};

    /**
     * Deals with the parsing of the URI according to the regex above.
 	 * Written by Steven Levithan - see credits at top.
     */
	var parseUri = function()
	{
		str = decodeURI( options.url );

		var m = options.parser[ options.strictMode ? "strict" : "loose" ].exec( str );
		var uri = {};
		var i = 14;

		while ( i-- ) {
			uri[ options.key[i] ] = m[i] || "";
		}

		uri[ options.q.name ] = {};
		uri[ options.key[12] ].replace( options.q.parser, function ( $0, $1, $2 ) {
			if ($1) {
				uri[options.q.name][$1] = $2;
			}
		});

		return uri;
	};

    /**
     * Returns the value of the passed in key from the parsed URI.
  	 *
	 * @param string key The key whose value is required
     */
	var key = function( key )
	{
		if ( ! parsed.length )
		{
			setUp(); // if the URI has not been parsed yet then do this first...
		}
		if ( key == "base" )
		{
			if ( parsed.port !== null && parsed.port !== "" )
			{
				return parsed.protocol+"://"+parsed.host+":"+parsed.port+"/";
			}
			else
			{
				return parsed.protocol+"://"+parsed.host+"/";
			}
		}

		return ( parsed[key] === "" ) ? null : parsed[key];
	};

	/**
     * Returns the value of the required query string parameter.
  	 *
	 * @param string item The parameter whose value is required
     */
	var param = function( item )
	{
		if ( ! parsed.length )
		{
			setUp(); // if the URI has not been parsed yet then do this first...
		}
		return ( parsed.queryKey[item] === null ) ? null : parsed.queryKey[item];
	};

    /**
     * 'Constructor' (not really!) function.
     *  Called whenever the URI changes to kick off re-parsing of the URI and splitting it up into segments.
     */
	var setUp = function()
	{
		parsed = parseUri();

		getSegments();
	};

    /**
     * Splits up the body of the URI into segments (i.e. sections delimited by '/')
     */
	var getSegments = function()
	{
		var p = parsed.path;
		segments = []; // clear out segments array
		segments = parsed.path.length == 1 ? {} : ( p.charAt( p.length - 1 ) == "/" ? p.substring( 1, p.length - 1 ) : path = p.substring( 1 ) ).split("/");
	};

	return {

	    /**
	     * Sets the parsing mode - either strict or loose. Set to loose by default.
	     *
	     * @param string mode The mode to set the parser to. Anything apart from a value of 'strict' will set it to loose!
	     */
		setMode : function( mode )
		{
			strictMode = mode == "strict" ? true : false;
			return this;
		},

		/**
	     * Sets URI to parse if you don't want to to parse the current page's URI.
		 * Calling the function with no value for newUri resets it to the current page's URI.
	     *
	     * @param string newUri The URI to parse.
	     */
		setUrl : function( newUri )
		{
			options.url = newUri === undefined ? window.location : newUri;
			setUp();
			return this;
		},

		/**
	     * Returns the value of the specified URI segment. Segments are numbered from 1 to the number of segments.
		 * For example the URI http://test.com/about/company/ segment(1) would return 'about'.
		 *
		 * If no integer is passed into the function it returns the number of segments in the URI.
	     *
	     * @param int pos The position of the segment to return. Can be empty.
	     */
		segment : function( pos )
		{
			if ( ! parsed.length )
			{
				setUp(); // if the URI has not been parsed yet then do this first...
			}
			if ( pos === undefined )
			{
				return segments.length;
			}
			return ( segments[pos] === "" || segments[pos] === undefined ) ? null : segments[pos];
		},

		attr : key, // provides public access to private 'key' function - see above

		param : param // provides public access to private 'param' function - see above

	};

}();