/*
        jQuery Coda-Slider v2.0 - http://www.ndoherty.biz/coda-slider
        Copyright (c) 2009 Niall Doherty
        This plugin available for use in all personal or commercial projects under both MIT and GPL licenses.
*/

$(function(){
        // Remove the coda-slider-no-js class from the body
        $("body").removeClass("coda-slider-no-js");
        // Preloader
        $(".coda-slider").children('.panel').hide().end().prepend('<p class="loading">Loading...<br /><img src="images/ajax-loader.gif" alt="loading..." /></p>');
});

var sliderCount = 1;

$.fn.codaSlider = function(settings) {

        settings = $.extend({
                autoHeight: true,
                autoHeightEaseDuration: 1000,
                autoHeightEaseFunction: "easeInOutExpo",
                autoSlide: false,
                autoSlideInterval: 7000,
                autoSlideStopWhenClicked: true,
                crossLinking: true,
                dynamicArrows: false,
                dynamicArrowLeftText: "&#171; left",
                dynamicTabs: true,
                //wo sollen die Tabs angezeigt werden?
                dynamicTabsAlign: "right",
                dynamicTabsPosition: "top",
                externalTriggerSelector: "a.xtrig",
                firstPanelToLoad: 1,
                panelTitleSelector: "h4.title",
                slideEaseDuration: 1000,
                slideEaseFunction: "easeInOutExpo"
        }, settings);

        return this.each(function(){

                // Uncomment the line below to test your preloader
                // alert("Testing preloader");

                var slider = $(this);

                // If we need arrows
                if (settings.dynamicArrows) {
                        slider.parent().addClass("arrows");
                        slider.before('<div class="coda-nav-left" id="coda-nav-left-' + sliderCount + '"><a href="#">' + settings.dynamicArrowLeftText + '</a></div>');
                        slider.after('<div class="coda-nav-right" id="coda-nav-right-' + sliderCount + '"><a href="#">' + settings.dynamicArrowRightText + '</a></div>');
                };

                var panelWidth = slider.find(".panel").width();
                var panelCount = slider.find(".panel").size();
                var panelContainerWidth = panelWidth*panelCount;
                var navClicks = 0; // Used if autoSlideStopWhenClicked = true

                // Surround the collection of panel divs with a container div (wide enough for all panels to be lined up end-to-end)
                $('.panel', slider).wrapAll('<div class="panel-container"></div>');
                // Specify the width of the container div (wide enough for all panels to be lined up end-to-end)
                $(".panel-container", slider).css({ width: panelContainerWidth });

                // Specify the current panel.
                // If the loaded URL has a hash (cross-linking), we're going to use that hash to give the slider a specific starting position...
                if (settings.crossLinking && location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
                        var currentPanel = parseInt(location.hash.slice(1));
                        var offset = - (panelWidth*(currentPanel - 1));
                        $('.panel-container', slider).css({ marginLeft: offset });
                // If that's not the case, check to see if we're supposed to load a panel other than Panel 1 initially...
                } else if (settings.firstPanelToLoad != 1 && settings.firstPanelToLoad <= panelCount) {
                        var currentPanel = settings.firstPanelToLoad;
                        var offset = - (panelWidth*(currentPanel - 1));
                        $('.panel-container', slider).css({ marginLeft: offset });
                // Otherwise, we'll just set the current panel to 1...
                } else {
                        var currentPanel = 1;
                };

                // Left arrow click
                $("#coda-nav-left-" + sliderCount + " a").click(function(){
                        navClicks++;
                        if (currentPanel == 1) {
                                offset = - (panelWidth*(panelCount - 1));
                                alterPanelHeight(panelCount - 1);
                                currentPanel = panelCount;
                                slider.siblings('.coda-nav').find('a.current').removeClass('current').parents('ul').find('li:last a').addClass('current');
                        } else {
                                currentPanel -= 1;
                                alterPanelHeight(currentPanel - 1);
                                offset = - (panelWidth*(currentPanel - 1));
                                slider.siblings('.coda-nav').find('a.current').removeClass('current').parent().prev().find('a').addClass('current');
                        };
                        $('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
                        if (settings.crossLinking) { location.hash = currentPanel }; // Change the URL hash (cross-linking)
                        return false;
                });

                // Right arrow click
                $('#coda-nav-right-' + sliderCount + ' a').click(function(){
                        navClicks++;
                        if (currentPanel == panelCount) {
                                offset = 0;
                                currentPanel = 1;
                                alterPanelHeight(0);
                                slider.siblings('.coda-nav').find('a.current').removeClass('current').parents('ul').find('a:eq(0)').addClass('current');
                        } else {
                                offset = - (panelWidth*currentPanel);
                                alterPanelHeight(currentPanel);
                                currentPanel += 1;
                                slider.siblings('.coda-nav').find('a.current').removeClass('current').parent().next().find('a').addClass('current');
                        };
                        $('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
                        if (settings.crossLinking) { location.hash = currentPanel }; // Change the URL hash (cross-linking)
                        return false;
                });

                // If we need a dynamic menu
                if (settings.dynamicTabs) {
                        var dynamicTabs = '<div class="coda-nav" id="coda-nav-' + sliderCount + '"><ul></ul></div>';
                        switch (settings.dynamicTabsPosition) {
                                case "bottom":
                                        slider.parent().append(dynamicTabs);
                                        break;
                                default:
                                        slider.parent().prepend(dynamicTabs);
                                        break;
                        };
                        ul = $('#coda-nav-' + sliderCount + ' ul');
                        // Create the nav items
                        $('.panel', slider).each(function(n) {
                                ul.append('<li class="tab' + (n+1) + '"><a href="#' + (n+1) + '">' + $(this).find(settings.panelTitleSelector).text() + '</a></li>');
                        });
                        navContainerWidth = slider.width() + slider.siblings('.coda-nav-left').width() + slider.siblings('.coda-nav-right').width();
                        ul.parent().css({ width: navContainerWidth });
                        switch (settings.dynamicTabsAlign) {
                                case "center":
                                        ul.css({ width: ($("li", ul).width() + 2) * panelCount });
                                        break;
                                case "right":
                                        ul.css({ float: 'right' });
                                        break;
                        };
                };

                // If we need a tabbed nav
                $('#coda-nav-' + sliderCount + ' a').each(function(z) {
                        // What happens when a nav link is clicked
                        $(this).bind("click", function() {
                                navClicks++;
                                $(this).addClass('current').parents('ul').find('a').not($(this)).removeClass('current');
                                offset = - (panelWidth*z);
                                alterPanelHeight(z);
                                currentPanel = z + 1;
                                $('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
                                if (!settings.crossLinking) { return false }; // Don't change the URL hash unless cross-linking is specified
                        });
                });

                // External triggers (anywhere on the page)
                $(settings.externalTriggerSelector).each(function() {
                        // Make sure this only affects the targeted slider
                        if (sliderCount == parseInt($(this).attr("rel").slice(12))) {
                                $(this).bind("click", function() {
                                        navClicks++;
                                        targetPanel = parseInt($(this).attr("href").slice(1));
                                        offset = - (panelWidth*(targetPanel - 1));
                                        alterPanelHeight(targetPanel - 1);
                                        currentPanel = targetPanel;
                                        // Switch the current tab:
                                        slider.siblings('.coda-nav').find('a').removeClass('current').parents('ul').find('li:eq(' + (targetPanel - 1) + ') a').addClass('current');
                                        // Slide
                                        $('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
                                        if (!settings.crossLinking) { return false }; // Don't change the URL hash unless cross-linking is specified
                                });
                        };
                });

                // Specify which tab is initially set to "current". Depends on if the loaded URL had a hash or not (cross-linking).
                if (settings.crossLinking && location.hash && parseInt(location.hash.slice(1)) <= panelCount) {
                        $("#coda-nav-" + sliderCount + " a:eq(" + (location.hash.slice(1) - 1) + ")").addClass("current");
                // If there's no cross-linking, check to see if we're supposed to load a panel other than Panel 1 initially...
                } else if (settings.firstPanelToLoad != 1 && settings.firstPanelToLoad <= panelCount) {
                        $("#coda-nav-" + sliderCount + " a:eq(" + (settings.firstPanelToLoad - 1) + ")").addClass("current");
                // Otherwise we must be loading Panel 1, so make the first tab the current one.
                } else {
                        $("#coda-nav-" + sliderCount + " a:eq(0)").addClass("current");
                };

                // Set the height of the first panel
                if (settings.autoHeight) {
                        panelHeight = $('.panel:eq(' + (currentPanel - 1) + ')', slider).height();
                        slider.css({ height: panelHeight });
                };

                // Trigger autoSlide
                if (settings.autoSlide) {
                        slider.ready(function() {
                                setTimeout(autoSlide,settings.autoSlideInterval);
                        });
                };

                function alterPanelHeight(x) {
                        if (settings.autoHeight) {
                                panelHeight = $('.panel:eq(' + x + ')', slider).height()
                                slider.animate({ height: panelHeight }, settings.autoHeightEaseDuration, settings.autoHeightEaseFunction);
                        };
                };

                function autoSlide() {
                        if (navClicks == 0 || !settings.autoSlideStopWhenClicked) {
                                if (currentPanel == panelCount) {
                                        var offset = 0;
                                        currentPanel = 1;
                                } else {
                                        var offset = - (panelWidth*currentPanel);
                                        currentPanel += 1;
                                };
                                alterPanelHeight(currentPanel - 1);
                                // Switch the current tab:
                                slider.siblings('.coda-nav').find('a').removeClass('current').parents('ul').find('li:eq(' + (currentPanel - 1) + ') a').addClass('current');
                                // Slide:
                                $('.panel-container', slider).animate({ marginLeft: offset }, settings.slideEaseDuration, settings.slideEaseFunction);
                                setTimeout(autoSlide,settings.autoSlideInterval);
                        };
                };

                // Kill the preloader
                $('.panel', slider).show().end().find("p.loading").remove();
                slider.removeClass("preload");

                sliderCount++;

        });
};