/*

 *

 * Copyright (c) 2006-2010 Joan Piedra (http://joanpiedra.com)

 * Licensed under the MIT License:

 * http://www.opensource.org/licenses/mit-license.php

 * 

 */

(function($) {



/*

 * Converts image and link elements to thumbnails

 *

 * @name     $.fn.thumbs

 * @author   Joan Piedra (http://joanpiedra.com)

 * @example  $('.thumb').thumbs();

 *

 */

$.fn.thumbs = function(options) {

    var $thumbs = this;

    

    if (options == 'destroy') {

        return Thumbs.destroy($thumbs);

    }

    

    if( $thumbs.data('thumbs') ) {

        return $thumbs;

    }

    

    var center = {},

    defaults = {

        center: true,

        classNames: {

            center: 'thumb-center',

            container: 'thumb-container',

            icon: 'thumb-icon',

            img: 'thumb-img',

            inner: 'thumb-inner',

            strip: 'thumb-strip'

        },

        html: '<span class="%container%"><span class="%inner%"><span class="%img%"></span><span class="%strip%">%strip_content%</span><span class="%icon%"></span></span></span>',

        strip: true

    };

    

    options = $.extend(true, {}, defaults, options);

    

    return $thumbs.each(function(){

        var $thumb = $(this),

        c = options.classNames,

        clone = $thumb.clone(true),

        html = new String(options.html),

        centered = false,

        strip = '';

        

        for (className in c) {

            var newClassName = c[className];

            

            if ( options.center && !centered && className == 'container' ) {

                newClassName = c.container + ' ' + c.center;

                centered = true;

            }

            

            html = html.replace('%' + className + '%', newClassName);

        }

        

        if (options.strip) {

            strip = $thumb.is('img') ? $thumb.attr('alt') : $thumb.find('img').attr('alt');

            strip = strip != undefined ? strip : $thumb.attr('title');

            strip = strip != undefined ? strip : '';

        }

        

        html = html.replace('%strip_content%', strip);

        

        $thumb.wrap( html );

        

        if (options.center) {

            Thumbs.centerImg( $thumb );

        }

        

        var data = {

            'container': $thumb.parents('.' + c.container),

            'raw': clone

        };

        

        $thumb.data('thumbs', data);

    });

};





var Thumbs = {



    /*

     * Private: Absolute positions the image in the center of the thumbnail frame

     *

     * @name     thumbs.centerImg

     * @author   Joan Piedra (http://joanpiedra.com)

     * @example  Thumbs.centerImg($thumb);

     *

     */

    centerImg: function($thumb) {

        var $img = $thumb.is('img') ? $thumb : $thumb.find('img'),

        css = {

            left: '-' + ( parseInt( $img.css('width') ) / 2 ) + 'px',

            top: '-' + ( parseInt( $img.css('height') ) / 2 ) + 'px'

        };

    

        $img.css( css );

    

        return $thumb;

    },



    /*

     * Private: Removes all the added thumbnail html

     *

     * @name     thumbs.destroy

     * @author   Joan Piedra (http://joanpiedra.com)

     * @example  Thumbs.destroy($thumbs);

     *

     */

    destroy: function($thumbs) {

        $thumbs.each(function(index) {

            var $thumb = $(this),

            data = $thumb.data('thumbs');

            

            if (!data) {

                return;

            }

            

            data.container.after(data.raw).remove();

        });

    }



}



})(jQuery);