/*

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 _/    _/      _/      _/_/    _/    _/    _/_/_/  _/_/_/
 _/  _/  _/_/      _/    _/    _/  _/    _/  _/        _/    _/
 _/  _/    _/      _/    _/    _/  _/    _/  _/        _/    _/
 _/    _/_/  _/    _/      _/_/      _/_/_/    _/_/_/  _/    _/
 _/
 _/

 Created by David Kaneda <http://www.davidkaneda.com>
 Documentation and issue tracking on Google Code <http://code.google.com/p/jqtouch/>

 Special thanks to Jonathan Stark <http://jonathanstark.com/>
 and pinch/zoom <http://www.pinchzoom.com/>

 (c) 2009 by jQTouch project members.
 See LICENSE.txt for license.

 */

(function($)
{
    if($.jQTouch)
    {
        $.jQTouch.addExtension(function Floaty(jQT)
        {

            $.fn.makeFloaty = function(options)
            {
                var defaults = {
                    align: 'top',
                    spacing: 20,
                    time: '.3s'
                }
                var settings = $.extend({}, defaults, options);
                settings.align = (settings.align == 'top') ? 'top' : 'bottom';

                return this.each(function()
                {
                    var $el = $(this);

                    $el.css({
                        '-webkit-transition': 'top '+settings.time+' ease-in-out',
                        'display': 'block',
                        'min-height': '0 !important'
                    }).data('settings', settings);

                    $(document).bind('scroll', function()
                    {
                        if($el.data('floatyVisible') === true)
                        {
                            $el.scrollFloaty();
                        }
                    });
                    $el.scrollFloaty();
                });
            }

            $.fn.scrollFloaty = function()
            {
                return this.each(function()
                {
                    var $el = $(this);
                    var settings = $el.data('settings');
                    var wHeight = $('html').attr('clientHeight'); // WRONG

                    var newY = window.pageYOffset+((settings.align == 'top') ? settings.spacing : wHeight-settings.spacing-$el.get(0).offsetHeight);

                    $el.css('top', newY).data('floatyVisible', true);
                });
            }

            $.fn.hideFloaty = function()
            {
                return this.each(function()
                {
                    var $el = $(this);
                    var oh = $el.get(0).offsetHeight;

                    $el.css('top', -oh-10).data('floatyVisible', false);
                });
            }

            $.fn.toggleFloaty = function()
            {
                return this.each(function()
                {
                    var $el = $(this);
                    if($el.data('floatyVisible') === true)
                    {
                        $el.hideFloaty();
                    }
                    else
                    {
                        $el.scrollFloaty();
                    }
                });
            }
        });
    }
})(jQuery);