/*
* Slides, A Slideshow Plugin for jQuery
* Intructions: http://slidesjs.com
* By: Nathan Searles, http://nathansearles.com
* Version: 1.1.2
* Updated: February 14th, 2011
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
(function($) {
    $.fn.slides = function(option) {
        option = $.extend({}, $.fn.slides.option, option);
        return this.each(function() {
            $('.' + option.container, $(this)).children().wrapAll('<div class="slides_control"/>');
            var elem = $(this),
                control = $('.slides_control', elem),
                total = control.children().size(),
                width = control.children().outerWidth(),
                height = control.children().outerHeight(),
                start = option.start - 1,
                effect = option.effect.indexOf(',') < 0 ? option.effect : option.effect.replace(' ', '').split(',')[0],
                paginationEffect = option.effect.indexOf(',') < 0 ? effect : option.effect.replace(' ', '').split(',')[1],
                next = 0,
                prev = 0,
                number = 0,
                current = 0,
                loaded, active, clicked, position, direction, imageParent;
            if (total < 2) {
                return;
            }
            if (start < 0) {
                start = 0;
            };
            if (start > total) {
                start = total - 1;
            };
            if (option.start) {
                current = start;
            };
            if (option.randomize) {
                control.randomize();
            }
            $('.' + option.container, elem).css({
                overflow: 'hidden',
                position: 'relative'
            });
            control.children().css({
                position: 'absolute',
                top: 0,
                left: control.children().outerWidth(),
                zIndex: 0,
                display: 'none'
            });
            control.css({
                position: 'relative',
                width: (width * 3),
                height: height,
                left: -width
            });
            $('.' + option.container, elem).css({
                display: 'block'
            });
            if (option.autoHeight) {
                control.children().css({
                    height: 'auto'
                });
                control.animate({
                    height: control.children(':eq(' + start + ')').outerHeight()
                }, option.autoHeightSpeed);
            }
            if (option.preload && control.find('img').length) {
                $('.' + option.container, elem).css({
                    background: 'url(' + option.preloadImage + ') no-repeat 50% 50%'
                });
                var img = control.find('img:eq(' + start + ')').attr('src') + '?' + (new Date()).getTime();
                if ($('img', elem).parent().attr('class') != 'slides_control') {
                    imageParent = control.children(':eq(0)')[0].tagName.toLowerCase();
                } else {
                    imageParent = control.find('img:eq(' + start + ')');
                }
                control.find('img:eq(' + start + ')').attr('src', img).load(function() {
                    control.find(imageParent + ':eq(' + start + ')').fadeIn(option.fadeSpeed, function() {
                        $(this).css({
                            zIndex: 5
                        });
                        elem.css({
                            background: ''
                        });
                        loaded = true;
                    });
                });
            } else {
                control.children(':eq(' + start + ')').fadeIn(option.fadeSpeed, function() {
                    loaded = true;
                });
            }
            if (option.bigTarget) {
                control.children().css({
                    cursor: 'pointer'
                });
                control.children().click(function() {
                    animate('next', effect);
                    return false;
                });
            }
            if (option.hoverPause && option.play) {
                control.children().bind('mouseover', function() {
                    stop();
                });
                control.children().bind('mouseleave', function() {
                    pause();
                });
            }
            if (option.generateNextPrev) {
                $('.' + option.container, elem).after('<a href="#" class="' + option.prev + '">Prev</a>');
                $('.' + option.prev, elem).after('<a href="#" class="' + option.next + '">Next</a>');
            }
            $('.' + option.next, elem).click(function(e) {
                e.preventDefault();
                if (option.play) {
                    pause();
                };
                animate('next', effect);
            });
            $('.' + option.prev, elem).click(function(e) {
                e.preventDefault();
                if (option.play) {
                    pause();
                };
                animate('prev', effect);
            });
            if (option.generatePagination) {
                elem.append('<ul class=' + option.paginationClass + '></ul>');
                control.children().each(function() {
                    $('.' + option.paginationClass, elem).append('<li><a href="#' + number + '">' + (number + 1) + '</a></li>');
                    number++;
                });
            } else {
                $('.' + option.paginationClass + ' li a', elem).each(function() {
                    $(this).attr('href', '#' + number);
                    number++;
                });
            }
            $('.' + option.paginationClass + ' li:eq(' + start + ')', elem).addClass('active');
            $('.' + option.paginationClass + ' li a', elem).click(function() {
                if (option.play) {
                    pause();
                };
                clicked = $(this).attr('href').match('[^#/]+$');
                if (current != clicked) {
                    animate('pagination', paginationEffect, clicked);
                }
                return false;
            });
            $('a.link', elem).click(function() {
                if (option.play) {
                    pause();
                };
                clicked = $(this).attr('href').match('[^#/]+$') - 1;
                if (current != clicked) {
                    animate('pagination', paginationEffect, clicked);
                }
                return false;
            });
            if (option.play) {
                playInterval = setInterval(function() {
                    animate('next', effect);
                }, option.play);
                elem.data('interval', playInterval);
            };

            function stop() {
                clearInterval(elem.data('interval'));
            };

            function pause() {
                if (option.pause) {
                    clearTimeout(elem.data('pause'));
                    clearInterval(elem.data('interval'));
                    pauseTimeout = setTimeout(function() {
                        clearTimeout(elem.data('pause'));
                        playInterval = setInterval(function() {
                            animate("next", effect);
                        }, option.play);
                        elem.data('interval', playInterval);
                    }, option.pause);
                    elem.data('pause', pauseTimeout);
                } else {
                    stop();
                }
            };

            function animate(direction, effect, clicked) {
                if (!active && loaded) {
                    active = true;
                    switch (direction) {
                        case 'next':
                            prev = current;
                            next = current + 1;
                            next = total === next ? 0 : next;
                            position = width * 2;
                            direction = -width * 2;
                            current = next;
                            break;
                        case 'prev':
                            prev = current;
                            next = current - 1;
                            next = next === -1 ? total - 1 : next;
                            position = 0;
                            direction = 0;
                            current = next;
                            break;
                        case 'pagination':
                            next = parseInt(clicked, 10);
                            prev = $('.' + option.paginationClass + ' li.active a', elem).attr('href').match('[^#/]+$');
                            if (next > prev) {
                                position = width * 2;
                                direction = -width * 2;
                            } else {
                                position = 0;
                                direction = 0;
                            }
                            current = next;
                            break;
                    }
                    if (effect === 'fade') {
                        option.animationStart();
                        if (option.crossfade) {
                            control.children(':eq(' + next + ')', elem).css({
                                zIndex: 10
                            }).fadeIn(option.fadeSpeed, function() {
                                if (option.autoHeight) {
                                    control.animate({
                                        height: control.children(':eq(' + next + ')', elem).outerHeight()
                                    }, option.autoHeightSpeed, function() {
                                        control.children(':eq(' + prev + ')', elem).css({
                                            display: 'none',
                                            zIndex: 0
                                        });
                                        control.children(':eq(' + next + ')', elem).css({
                                            zIndex: 0
                                        });
                                        option.animationComplete(next + 1);
                                        active = false;
                                    });
                                } else {
                                    control.children(':eq(' + prev + ')', elem).css({
                                        display: 'none',
                                        zIndex: 0
                                    });
                                    control.children(':eq(' + next + ')', elem).css({
                                        zIndex: 0
                                    });
                                    option.animationComplete(next + 1);
                                    active = false;
                                }
                            });
                        } else {
                            option.animationStart();
                            control.children(':eq(' + prev + ')', elem).fadeOut(option.fadeSpeed, function() {
                                if (option.autoHeight) {
                                    control.animate({
                                        height: control.children(':eq(' + next + ')', elem).outerHeight()
                                    }, option.autoHeightSpeed, function() {
                                        control.children(':eq(' + next + ')', elem).fadeIn(option.fadeSpeed);
                                    });
                                } else {
                                    control.children(':eq(' + next + ')', elem).fadeIn(option.fadeSpeed, function() {
                                        if ($.browser.msie) {
                                            $(this).get(0).style.removeAttribute('filter');
                                        }
                                    });
                                }
                                option.animationComplete(next + 1);
                                active = false;
                            });
                        }
                    } else {
                        control.children(':eq(' + next + ')').css({
                            left: position,
                            display: 'block'
                        });
                        if (option.autoHeight) {
                            option.animationStart();
                            control.animate({
                                left: direction,
                                height: control.children(':eq(' + next + ')').outerHeight()
                            }, option.slideSpeed, function() {
                                control.css({
                                    left: -width
                                });
                                control.children(':eq(' + next + ')').css({
                                    left: width,
                                    zIndex: 5
                                });
                                control.children(':eq(' + prev + ')').css({
                                    left: width,
                                    display: 'none',
                                    zIndex: 0
                                });
                                option.animationComplete(next + 1);
                                active = false;
                            });
                        } else {
                            option.animationStart();
                            control.animate({
                                left: direction
                            }, option.slideSpeed, function() {
                                control.css({
                                    left: -width
                                });
                                control.children(':eq(' + next + ')').css({
                                    left: width,
                                    zIndex: 5
                                });
                                control.children(':eq(' + prev + ')').css({
                                    left: width,
                                    display: 'none',
                                    zIndex: 0
                                });
                                option.animationComplete(next + 1);
                                active = false;
                            });
                        }
                    }
                    if (option.pagination) {
                        $('.' + option.paginationClass + ' li.active', elem).removeClass('active');
                        $('.' + option.paginationClass + ' li:eq(' + next + ')', elem).addClass('active');
                    }
                }
            };
        });
    };
    $.fn.slides.option = {
        preload: false,
        preloadImage: '../images/loading.gif',
        container: 'slides_container',
        generateNextPrev: false,
        next: 'next',
        prev: 'prev',
        pagination: true,
        generatePagination: true,
        paginationClass: 'pagination',
        fadeSpeed: 350,
        slideSpeed: 350,
        start: 1,
        effect: 'slide',
        crossfade: false,
        randomize: false,
        play: 0,
        pause: 0,
        hoverPause: false,
        autoHeight: false,
        autoHeightSpeed: 350,
        bigTarget: false,
        animationStart: function() {},
        animationComplete: function() {}
    };
    $.fn.randomize = function(callback) {
        function randomizeOrder() {
            return (Math.round(Math.random()) - 0.5);
        }
        return ($(this).each(function() {
            var $this = $(this);
            var $children = $this.children();
            var childCount = $children.length;
            if (childCount > 1) {
                $children.hide();
                var indices = [];
                for (i = 0; i < childCount; i++) {
                    indices[indices.length] = i;
                }
                indices = indices.sort(randomizeOrder);
                $.each(indices, function(j, k) {
                    var $child = $children.eq(k);
                    var $clone = $child.clone(true);
                    $clone.show().appendTo($this);
                    if (callback !== undefined) {
                        callback($child, $clone);
                    }
                    $child.remove();
                });
            }
        }));
    };
})(jQuery);