Ticket #3914: effects.scrollview.js.txt

/*
 * jQuery UI Effects Scrollview
 *
 * Copyright (c) 2009 Philipp Simon ([email protected])
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * Depends:
 *  effects.core.js
 *
 */
;(function($) {

$.effects.scrollview = function(o) {
        return this.queue(function() {

                // Create element
                var el = $(this);

                // Set options
                $.effects.setMode(el, 'show');
                var offset = o.options.offset || 10;

                var vpTop = $(window).scrollTop();
                var lyTop = el.offset().top;

                if(lyTop - offset < vpTop) {
                        scrollTo(lyTop - offset);
                } else {
                        var vpHeight = self.innerHeight || $(window).height();
                        var lyHeight = el.height();

                        if (lyTop + lyHeight + offset > vpTop + vpHeight) {
                                if (lyHeight > vpHeight) {
                                        scrollTo(lyTop - offset);
                                } else {
                                        scrollTo(lyTop + lyHeight + offset - vpHeight);
                                }
                        } else {
                                if(o.callback) o.callback.apply(el.get(0));
                                el.dequeue();
                        }
                }

                function scrollTo(y) {
                        var animation = {'scrollTop': y};
                        $($.browser.safari ? 'body' : 'html').animate(animation, {queue: false, duration: o.duration, easing: o.options.easing, complete: function() {
                                if(o.callback) o.callback.apply(el.get(0), arguments);
                                el.dequeue();
                        }});
                };
        });

};

})(jQuery);