/*
* jQuery FlexSlider v1.0 (Release)
* http://flex.madebymufffin.com
*
* Copyright 2011, Tyler Smith
* Free to use under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*/


(function ($) {
    $.fn.extend({
        flexslider: function (options) {
            //Plugin options and their default values
            var defaults = {
                animation: "fade",              //Select your animation type (fade/slide)
                slideshow: true,                //Should the slider animate automatically by default? (true/false)
                slideshowSpeed: 14000,           //Set the speed of the slideshow cycling, in milliseconds
                animationDuration: 500,         //Set the speed of animations, in milliseconds
                directionNav: true,             //Create navigation for previous/next navigation? (true/false)
                controlNav: true,               //Create navigation for paging control of each clide? (true/false)
                keyboardNav: true,              //Allow for keyboard navigation using left/right keys (true/false)
                prevText: "Previous",           //Set the text for the "previous" directionNav item
                nextText: "Next",               //Set the text for the "next" directionNav item
                slideToStart: 0,                //The slide that the slider should start on. Array notation (0 = first slide)
                pauseOnAction: true,            //Pause the slideshow when interacting with control elements, highly recommended. (true/false)
                pauseOnHover: false,            //Pause the slideshow when hovering over slider, then resume when no longer hovering (true/false)
                controlsContainer: ""           //Advanced property: Can declare which container the navigation elements should be appended too. Default container is the flexSlider element. Example use would be ".flexslider-container", "#container", etc. If the given element is not found, the default action will be taken.
            }

            //Get slider, slides, and other useful variables
            var options = $.extend(defaults, options),
			    slider = $(this),
			    container = $('.slides', slider),
			    slides = $('.slides li', slider),
			    ANIMATING = false,
          currentSlide = options.slideToStart;

            //Slider animation initialize
            if (options.animation.toLowerCase() == "slide") {
                slides.show(); //show slides after using CSS to hide them for loading
                slider.css({ "overflow": "hidden" });
                slides.width(slider.width()).css({ "float": "left" });
                container.width((slides.length * slider.width()) + 200); //extra width to account for quirks
            } else { //Default to fade
                slides.hide().eq(currentSlide).fadeIn(400);
            }

            ///////////////////////////////////////////////////////////////////
            // FLEXSLIDER: ANIMATION TYPE
            function flexAnimate(target) {
                if (!ANIMATING) {
                    ANIMATING = true;
                    if (options.animation.toLowerCase() == "slide") {
                        container.animate({ "margin-left": (-1 * target) * slider.width() + "px" }, options.animationDuration, function () {
                            ANIMATING = false;
                            currentSlide = target;
                        });
                    } else { //Default to Fade
                        slider.css({ "minHeight": slides.eq(currentSlide).height() });
                        slides.eq(currentSlide).fadeOut(options.animationDuration, function () {
                            slides.eq(target).fadeIn(options.animationDuration, function () {
                                ANIMATING = false;
                                currentSlide = target;
                            });
                            slider.css({ "minHeight": "inherit" });
                        });
                    }
                }
            }
            ///////////////////////////////////////////////////////////////////

            ///////////////////////////////////////////////////////////////////
            // FLEXSLIDER: CONTROL NAV
            if (options.controlNav) {
                if (slides.size() > 1) {
                    var controlNav = $('<ol class="flex-control-nav"></ol>');
                    var j = 1;
                    for (var i = 0; i < slides.size(); i++) {
                        controlNav.append('<li><a>' + j + '</a></li>');
                        j++;
                    }

                    if ($(options.controlsContainer).length > 0) {
                        $(options.controlsContainer).append(controlNav);
                    } else {
                        slider.append(controlNav);
                    }
                }

                controlNav = $('.flex-control-nav li a');
                controlNav.eq(currentSlide).addClass('active');

                controlNav.click(function (event) {
                    event.preventDefault();
                    if ($(this).hasClass('active') || ANIMATING) {
                        return;
                    } else {

                        controlNav.removeClass('active');
                        $(this).addClass('active');

                        var selected = controlNav.index($(this));
                        flexAnimate(selected);
                        if (options.pauseOnAction) {
                            clearInterval(animatedSlides);
                        }
                    }
                });
            }
            ///////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FLEXSLIDER: DIRECTION NAV
            if (options.directionNav) {
                //Create and append the nav
                if ($(options.controlsContainer).length > 0) {
                    $(options.controlsContainer).append($('<ul class="flex-direction-nav"><li><a class="prev" href="#">' + options.prevText + '</a></li><li><a class="next" href="#">' + options.nextText + '</a></li></ul>'));
                } else {
                    slider.append($('<ul class="flex-direction-nav"><li><a class="prev" href="#">' + options.prevText + '</a></li><li><a class="next" href="#">' + options.nextText + '</a></li></ul>'));
                }

                $('.flex-direction-nav li a').click(function (event) {
                    event.preventDefault();
                    if (ANIMATING) {
                        return;
                    } else {

                        if ($(this).hasClass('next')) {
                            var target = (currentSlide == slides.length - 1) ? 0 : currentSlide + 1;
                        } else {
                            var target = (currentSlide == 0) ? slides.length - 1 : currentSlide - 1;
                        }

                        if (options.controlNav) {
                            controlNav.removeClass('active');
                            controlNav.eq(target).addClass('active');
                        }

                        flexAnimate(target);
                        if (options.pauseOnAction) {
                            clearInterval(animatedSlides);
                        }
                    }
                });
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FLEXSLIDER: KEYBOARD NAV
            if (options.keyboardNav) {
                $(document).keyup(function (event) {
                    if (ANIMATING) {
                        return;
                    } else if (event.keyCode != 39 && event.keyCode != 37) {
                        return;
                    } else {

                        if (event.keyCode == 39) {
                            var target = (currentSlide == slides.length - 1) ? 0 : currentSlide + 1;
                        } else if (event.keyCode == 37) {
                            var target = (currentSlide == 0) ? slides.length - 1 : currentSlide - 1;
                        }

                        if (options.controlNav) {
                            controlNav.removeClass('active');
                            controlNav.eq(target).addClass('active');
                        }

                        flexAnimate(target);
                        if (options.pauseOnAction) {
                            clearInterval(animatedSlides);
                        }
                    }
                });
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FLEXSLIDER: ANIMATION SLIDESHOW
            if (options.slideshow) {
                var animatedSlides;

                function animateSlides() {
                    if (ANIMATING) {
                        return;
                    } else {
                        var target = (currentSlide == slides.length - 1) ? 0 : currentSlide + 1;

                        if (options.controlNav) {
                            controlNav.removeClass('active');
                            controlNav.eq(target).addClass('active');
                        }

                        flexAnimate(target);
                    }
                }

                //pauseOnHover
                if (options.pauseOnHover) {
                    slider.hover(function () {
                        clearInterval(animatedSlides);
                    }, function () {
                        animatedSlides = setInterval(animateSlides, options.slideshowSpeed);
                    });
                }

                //Initialize animation
                if (slides.length > 1) {
                    animatedSlides = setInterval(animateSlides, options.slideshowSpeed);
                }
            }
            //////////////////////////////////////////////////////////////////

            //////////////////////////////////////////////////////////////////
            //FLEXSLIDER: RESIZE FUNCTIONS (If necessary)
            if (options.animation.toLowerCase() == "slide") {
                var sliderTimer;
                $(window).resize(function () {
                    slides.width(slider.width());
                    container.width((slides.length * slider.width()) + 200); //extra width to account for quirks

                    //slider resize reset
                    clearTimeout(sliderTimer);
                    sliderTimer = setTimeout(function () {
                        flexAnimate(currentSlide);
                    }, 300);
                });
            }
            //////////////////////////////////////////////////////////////////
        }
    });

})(jQuery);