/*
AnythingSlider v1.43

By Chris Coyier: http://css-tricks.com
with major improvements by Doug Neiner: http://pixelgraphics.us/
based on work by Remy Sharp: http://jqueryfordesigners.com/

To use the navigationFormatter function, you must have a function that
accepts two paramaters, and returns a string of HTML text.

index = integer index (1 based);
panel = jQuery wrapped LI item this tab references
@return = Must return a string of HTML/Text

navigationFormatter: function(index, panel){
return "Panel #" + index; // This would have each tab with the text 'Panel #X' where X = index
}
*/

(function($) {

$.anythingSlider = function(el, options) {

// To avoid scope issues, use 'base' instead of 'this'
// to reference this class from internal events and functions.
var base = this;

// Wraps the ul in the necessary divs and then gives Access to jQuery element
base.$el = $(el).addClass('anythingBase').wrap('<div class="anythingSlider"><div class="anythingWindow" /></div>');

// Add a reverse reference to the DOM object
base.$el.data("AnythingSlider", base);

base.init = function(){

base.options = $.extend({}, $.anythingSlider.defaults, options);

// Cache existing DOM elements for later
// base.$el = original ul
// for wrap - get parent() then closest in case the ul has "anythingSlider" class
base.$wrapper = base.$el.parent().closest('div.anythingSlider').addClass('anythingSlider-' + base.options.theme);
base.$window = base.$el.closest('div.anythingWindow');
base.$controls = $('<div class="anythingControls"></div>').appendTo(base.$wrapper);
base.$items = base.$el.find('> li').addClass('panel');
base.$objects = base.$items.find('object');

// Set up a few defaults & get details
base.currentPage = base.options.startPanel;
base.pages = base.$items.length;
base.timer = null; // slideshow timer (setInterval) container
base.flag = false; // event flag to prevent multiple calls (used in control click/focusin)
base.playing = false; // slideshow state
base.hovered = false; // actively hovering over the slider
base.hasObj = !!base.$objects.length; // embedded objects exist in the slider
base.panelSize = []; // will contain dimensions and left position of each panel

// Get index (run time) of this slider on the page
base.runTimes = $('div.anythingSlider').index(base.$wrapper) + 1;

// Make sure easing function exists.
if (!$.isFunction($.easing[base.options.easing])) { base.options.easing = "swing"; }

// Set up Theme
if (base.options.theme != 'default') {
if (!$('link[href*=' + base.options.theme + ']').length){
$('body').append('<link rel="stylesheet" href="' + base.options.themeDirectory.replace(/\{themeName\}/g, base.options.theme) + '" type="text/css" />');
}
}

// Set the dimensions
if (base.options.resizeContents) {
if (base.options.width) { base.$wrapper.add(base.$items).css('width', base.options.width); }
if (base.options.height) { base.$wrapper.add(base.$items).css('height', base.options.height); }
if (base.hasObj){ base.$objects.find('embed').andSelf().css({ width : '100%', height: '100%' }); }
}

// initialize youtube api - doesn't work in IE (someone have a solution?)
base.$objects.each(function(){
if ($(this).find('[src*=youtube]').length){
$(this)
.prepend('<param name="wmode" value="' + base.options.addWmodeToObject +'"/>')
.parent().wrap('<div id="yt-temp"></div>')
.find('embed[src*=youtube]').attr('src', function(i,s){ return s + '&enablejsapi=1&version=3'; })
.attr('wmode',base.options.addWmodeToObject).end()
.find('param[value*=youtube]').attr('value', function(i,v){ return v + '&enablejsapi=1&version=3'; }).end()
// detach/appendTo required for Chrome
.detach()
.appendTo($('#yt-temp'))
.unwrap();
}
});

// Remove navigation & player if there is only one page
if (base.pages === 1) {
base.options.autoPlay = false;
base.options.buildNavigation = false;
base.options.buildArrows = false;
}

// If autoPlay functionality is included, then initialize the settings
if (base.options.autoPlay) {
base.playing = !base.options.startStopped; // Sets the playing variable to false if startStopped is true
base.buildAutoPlay();
}

// Build the navigation
base.buildNavigation();

// Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
// This supports the "infinite" scrolling, also ensures any cloned elements don't duplicate an ID
base.$el.prepend( base.$items.filter(':last').clone().addClass('cloned').removeAttr('id') );
base.$el.append( base.$items.filter(':first').clone().addClass('cloned').removeAttr('id') );

// We just added two items, time to re-cache the list, then get the dimensions of each panel
base.$items = base.$el.find('> li'); // reselect
base.setDimensions();
if (!base.options.resizeContents) { $(window).load(function(){ base.setDimensions(); }); } // set dimensions after all images load

// Build forwards/backwards buttons
if (base.options.buildArrows) { base.buildNextBackButtons(); }

// If pauseOnHover then add hover effects
if (base.options.pauseOnHover) {
base.$wrapper.hover(function() {
if (base.playing) {
base.$el.trigger('slideshow_paused', base.$el);
base.clearTimer(true);
}
}, function() {
if (base.playing) {
base.$el.trigger('slideshow_unpaused', base.$el);
base.startStop(base.playing, true);
}
});
}

// If a hash can not be used to trigger the plugin, then go to start panel
if ((base.options.hashTags === true && !base.gotoHash()) || base.options.hashTags === false) {
base.setCurrentPage(base.options.startPanel, false);
}

// Fix tabbing through the page
base.$items.find('a').focus(function(){
base.$items.find('.focusedLink').removeClass('focusedLink');
$(this).addClass('focusedLink');
base.$items.each(function(i){
if ($(this).find('a.focusedLink').length) {
base.gotoPage(i);
return false;
}
});
});

// Hide/Show navigation & play/stop controls
base.slideControls(false);
base.$wrapper.hover(function(e){
base.hovered = (e.type=="mouseenter") ? true : false;
base.slideControls( base.hovered, false );
});

// Add keyboard navigation
$(document).keyup(function(e){
if (base.$wrapper.is('.activeSlider')) {
switch (e.which) {
case 39: // right arrow
base.goForward();
break;
case 37: //left arrow
base.goBack();
break;
}
}
});

};

// Creates the numbered navigation links
base.buildNavigation = function() {
base.$nav = $('<ul class="thumbNav" />').appendTo(base.$controls);
if (base.options.playRtl) { base.$wrapper.addClass('rtl'); }

if (base.options.buildNavigation && (base.pages > 1)) {
base.$items.each(function(i,el) {
var index = i + 1,
$a = $("<a href='#'></a>").addClass('panel' + index).wrap("<li />");
base.$nav.append($a);

// If a formatter function is present, use it
if ($.isFunction(base.options.navigationFormatter)) {
var tmp = base.options.navigationFormatter(index, $(this));
$a.html(tmp);
// Add formatting to title attribute if text is hidden
if (parseInt($a.css('text-indent'),10) < 0) { $a.addClass(base.options.tooltipClass).attr('title', tmp); }
} else {
$a.text(index);
}

$a.bind(base.options.clickControls, function(e) {
if (!base.flag) {
// prevent running functions twice (once for click, second time for focusin)
base.flag = true; setTimeout(function(){ base.flag = false; }, 100);
base.gotoPage(index);
if (base.options.hashTags) { base.setHash('panel' + base.runTimes + '-' + index); }
}
e.preventDefault();
});

});

}
};

// Creates the Forward/Backward buttons
base.buildNextBackButtons = function() {
base.$forward = $('<span class="arrow forward"><a href="#">' + base.options.forwardText + '</a></span>');
base.$back = $('<span class="arrow back"><a href="#">' + base.options.backText + '</a></span>');

// Bind to the forward and back buttons
base.$back.bind(base.options.clickArrows, function(e) {
base.goBack();
e.preventDefault();
});
base.$forward.bind(base.options.clickArrows, function(e) {
base.goForward();
e.preventDefault();
});
// using tab to get to arrow links will show they have focus (outline is disabled in css)
base.$back.add(base.$forward).find('a').bind('focusin focusout',function(){
$(this).toggleClass('hover');
});

// Append elements to page
base.$wrapper.prepend(base.$forward).prepend(base.$back);
base.$arrowWidth = base.$forward.width();
};

// Creates the Start/Stop button
base.buildAutoPlay = function(){
base.$startStop = $("<a href='#' class='start-stop'></a>").html(base.playing ? base.options.stopText : base.options.startText);
base.$controls.append(base.$startStop);
base.$startStop
.bind(base.options.clickSlideshow, function(e) {
base.startStop(!base.playing);
if (base.playing) {
if (base.options.playRtl) {
base.goBack(true);
} else {
base.goForward(true);
}
}
e.preventDefault();
})
// show button has focus while tabbing
.bind('focusin focusout',function(){
$(this).toggleClass('hover');
});

// Use the same setting, but trigger the start;
base.startStop(base.playing);
};

// Set panel dimensions to either resize content or adjust panel to content
base.setDimensions = function(){
var w, h, c, cw, dw, leftEdge = 0, bww = base.$window.width(), winw = $(window).width();
base.$items.each(function(i){
c = $(this).children('*');
if (base.options.resizeContents){
// get viewport width & height from options (if set), or css
w = parseInt(base.options.width,10) || bww;
h = parseInt(base.options.height,10) || base.$window.height();
// resize panel
$(this).css({ width: w, height: h });
// resize panel contents, if solitary (wrapped content or solitary image)
if (c.length == 1){ c.css({ width: w, height: h }); }
} else {
// get panel width & height and save it
w = $(this).width(); // if not defined, it will return the width of the ul parent
dw = (w >= winw) ? true : false; // width defined from css?
if (c.length == 1 && dw){
cw = (c.width() >= winw) ? bww : c.width(); // get width of solitary child
$(this).css('width', cw); // set width of panel
c.css('max-width', cw); // set max width for all children
w = cw;
}
w = (dw) ? base.options.width || bww : w;
$(this).css('width', w);
h = $(this).outerHeight(); // get height after setting width
$(this).css('height', h);
}
base.panelSize[i] = [w,h,leftEdge];
leftEdge += w;
});
// Set total width of slider, but don't go beyond the set max overall width (limited by Opera)
base.$el.css('width', (leftEdge < base.options.maxOverallWidth) ? leftEdge : base.options.maxOverallWidth);
};

base.gotoPage = function(page, autoplay) {
if (typeof(page) === "undefined" || page === null) {
page = base.options.startPage;
base.setCurrentPage(base.options.startPage);
}

// pause YouTube videos before scrolling or prevent change if playing
if (base.checkVideo(base.playing)) { return; }

base.$el.trigger('slide_init', base.$el);
if ($.isFunction(base.options.init)) { base.options.init(page); }

base.slideControls(true, false);

// Just check for bounds
if (page > base.pages + 1) { page = base.pages; }
if (page < 0 ) { page = 1; }

// When autoplay isn't passed, we stop the timer
if (autoplay !== true) { autoplay = false; }
// Stop the slider when we reach the last page, if the option stopAtEnd is set to true
if (!autoplay || (base.options.stopAtEnd && page == base.pages)) { base.startStop(false); }

base.$el.trigger('slide_begin', base.$el);

// resize slider if content size varies
if (!base.options.resizeContents) {
// animating the wrapper resize before the window prevents flickering in Firefox
base.$wrapper.filter(':not(:animated)').animate(
{ width: base.panelSize[page][0], height: base.panelSize[page][1] },
{ queue: false, duration: base.options.animationTime, easing: base.options.easing }
);
}
// Animate Slider
base.$window.filter(':not(:animated)').animate(
{ scrollLeft : base.panelSize[page][2] },
{ queue: false, duration: base.options.animationTime, easing: base.options.easing, complete: function(){ base.endAnimation(page); } }
);

};

base.endAnimation = function(page){
if (page === 0) {
base.$window.scrollLeft(base.panelSize[base.pages][2]);
page = base.pages;
} else if (page > base.pages) {
// reset back to start position
base.$window.scrollLeft(0);
page = 1;
}
base.setCurrentPage(page, false);

if (!base.hovered) { base.slideControls(false); }

// continue YouTube video if in current panel
if (base.hasObj){
var emb = base.$items.eq(base.currentPage).find('embed[src*=youtube]');
try {
if (emb.length && $.isFunction(emb[0].getPlayerState) && emb[0].getPlayerState() > 0) {
emb[0].playVideo();
}
} catch(err) {}
}

base.$el.trigger('slide_complete', base.$el);

};

base.setCurrentPage = function(page, move) {
// Set visual
if (base.options.buildNavigation){
base.$nav.find('.cur').removeClass('cur');
base.$nav.find('a').eq(page - 1).addClass('cur');
}

// Only change left if move does not equal false
if (!move) {
base.$wrapper.css({ // .add(base.$window)
width: base.panelSize[page][0],
height: base.panelSize[page][1]
});
base.$wrapper.scrollLeft(0); // reset in case tabbing changed this scrollLeft
base.$window.scrollLeft( base.panelSize[page][2] );
}
// Update local variable
base.currentPage = page;

// Set current slider as active so keyboard navigation works properly
if (!base.$wrapper.is('.activeSlider')){
$('.activeSlider').removeClass('activeSlider');
base.$wrapper.addClass('activeSlider');
}
};

base.goForward = function(autoplay) {
if (autoplay !== true) { autoplay = false; base.startStop(false); }
base.gotoPage(base.currentPage + 1, autoplay);
};

base.goBack = function(autoplay) {
if (autoplay !== true) { autoplay = false; base.startStop(false); }
base.gotoPage(base.currentPage - 1, autoplay);
};

// This method tries to find a hash that matches panel-X
// If found, it tries to find a matching item
// If that is found as well, then that item starts visible
base.gotoHash = function(){
var hash = window.location.hash.match(/^#?panel(\d+)-(\d+)$/);
if (hash) {
var panel = parseInt(hash[1],10);
if (panel == base.runTimes) {
var slide = parseInt(hash[2],10),
$item = base.$items.filter(':eq(' + slide + ')');
if ($item.length !== 0) {
base.setCurrentPage(slide, false);
return true;
}
}
}
return false; // An item wasn't found;
};

// Taken from AJAXY jquery.history Plugin
base.setHash = function (hash){
// Write hash
if ( typeof window.location.hash !== 'undefined' ) {
if ( window.location.hash !== hash ) {
window.location.hash = hash;
}
} else if ( location.hash !== hash ) {
location.hash = hash;
}

// Done
return hash;
};
// <-- End AJAXY code

// Slide controls (nav and play/stop button up or down
base.slideControls = function(toggle, playing){
var dir = (toggle) ? 'slideDown' : 'slideUp',
t1 = (toggle) ? 0 : base.options.animationTime,
t2 = (toggle) ? base.options.animationTime: 0,
sign = (toggle) ? 0 : 1; // 0 = visible, 1 = hidden
if (base.options.toggleControls) {
base.$controls.stop(true,true).delay(t1)[dir](base.options.animationTime/2).delay(t2);
}
if (base.options.toggleArrows) {
if (!base.hovered && base.playing) { sign = 1; }
base.$forward.stop(true,true).delay(t1).animate({ right: sign * base.$arrowWidth, opacity: t2 }, base.options.animationTime/2);
base.$back.stop(true,true).delay(t1).animate({ left: sign * base.$arrowWidth, opacity: t2 }, base.options.animationTime/2);
}
};

base.clearTimer = function(paused){
// Clear the timer only if it is set
if (base.timer) {
window.clearInterval(base.timer);
if (!paused) { base.$el.trigger('slideshow_stop', base.$el); }
}
};

// Handles stopping and playing the slideshow
// Pass startStop(false) to stop and startStop(true) to play
base.startStop = function(playing, paused) {
if (playing !== true) { playing = false; } // Default if not supplied is false

if (playing && !paused) { base.$el.trigger('slideshow_start', base.$el); }

// Update variable
base.playing = playing;

// Toggle playing and text
if (base.options.autoPlay) {
base.$startStop.toggleClass('playing', playing).html( playing ? base.options.stopText : base.options.startText );
// add button text to title attribute if it is hidden by text-indent
if (parseInt(base.$startStop.css('text-indent'),10) < 0) {
base.$startStop.addClass(base.options.tooltipClass).attr('title', playing ? 'Stop' : 'Start');
}
}

if (playing){
base.clearTimer(true); // Just in case this was triggered twice in a row
base.timer = window.setInterval(function() {
// prevent autoplay if video is playing
if (!base.checkVideo(playing)) {
if (base.options.playRtl) {
base.goBack(true);
} else {
base.goForward(true);
}
}
}, base.options.delay);
} else {
base.clearTimer();
}
};

base.checkVideo = function(playing){
// pause YouTube videos before scrolling?
var emb, ps, stopAdvance = false;
if (base.hasObj){
base.$objects.each(function(){
// this only works on youtube videos
emb = $(this).find('embed[src*=youtube]');
try {
if (emb.length && $.isFunction(emb[0].getPlayerState)) {
// player states: unstarted (-1), ended (0), playing (1), paused (2), buffering (3), video cued (5).
ps = emb[0].getPlayerState();
// if autoplay, video playing, video is in current panel and resume option are true, then don't advance
if (playing && ps == 1 && base.$items.index(emb.closest('li')) == base.currentPage && base.options.resumeOnVideoEnd) {
stopAdvance = true;
} else {
// pause video if not autoplaying (if already initialized)
if (ps > 0) { emb[0].pauseVideo(); }
}
}
} catch(err) {}
});
}
return stopAdvance;
};

// Trigger the initialization
base.init();
};

$.anythingSlider.defaults = {
// Appearance
width : null, // Override the default CSS width
height : null, // Override the default CSS height
resizeContents : true, // If true, solitary images/objects in the panel will expand to fit the viewport
tooltipClass : 'tooltip', // Class added to navigation & start/stop button (text copied to title if it is hidden by a negative text indent)
theme : 'default', // Theme name
themeDirectory : 'css/theme-{themeName}.css', // Theme directory & filename {themeName} is replaced by the theme value above

// Navigation
startPanel : 1, // This sets the initial panel
hashTags : true, // Should links change the hashtag in the URL?
buildArrows : true, // If true, builds the forwards and backwards buttons
toggleArrows : false, // If true, side navigation arrows will slide out on hovering & hide @ other times
buildNavigation : true, // If true, builds a list of anchor links to link to each panel
toggleControls : false, // if true, slide in controls (navigation + play/stop button) on hover and slide change, hide @ other times
navigationFormatter : null, // Details at the top of the file on this use (advanced use)
forwardText : "&raquo;", // Link text used to move the slider forward (hidden by CSS, replaced with arrow image)
backText : "&laquo;", // Link text used to move the slider back (hidden by CSS, replace with arrow image)

// Slideshow options
autoPlay : true, // This turns off the entire slideshow FUNCTIONALY, not just if it starts running or not
startStopped : false, // If autoPlay is on, this can force it to start stopped
pauseOnHover : true, // If true & the slideshow is active, the slideshow will pause on hover
resumeOnVideoEnd : true, // If true & the slideshow is active & a youtube video is playing, it will pause the autoplay until the video is complete
stopAtEnd : false, // If true & the slideshow is active, the slideshow will stop on the last page
playRtl : false, // If true, the slideshow will move right-to-left
startText : "go", // Start button text
stopText : "stop", // Stop button text
delay : 3000, // How long between slideshow transitions in AutoPlay mode (in milliseconds)
animationTime : 600, // How long the slideshow transition takes (in milliseconds)
easing : "swing", // Anything other than "linear" or "swing" requires the easing plugin

// Interactivity
clickArrows : "click", // Event used to activate arrow functionality (e.g. "click" or "mouseenter")
clickControls : "click focusin", // Events used to activate navigation control functionality
clickSlideshow : "click", // Event used to activate slideshow play/stop button

// Misc options
addWmodeToObject : "opaque", // If your slider has an embedded object, the script will automatically add a wmode parameter with this setting
maxOverallWidth : 32766 // Max width (in pixels) of combined sliders (side-to-side); set to 32766 to prevent problems with Opera
};

$.fn.anythingSlider = function(options) {

// initialize the slider
if ((typeof(options)).match('object|undefined')){
return this.each(function(i){
if ($(this).is('.anythingBase')) { return; } // prevent multiple initializations
(new $.anythingSlider(this, options));
});

// If options is a number, process as an external link to page #: $(element).anythingSlider(#)
} else if (/\d/.test(options) && !isNaN(options)) {
return this.each(function(i) {
var anySlide = $(this).data('AnythingSlider');
if (anySlide) {
var page = (typeof(options) == "number") ? options : parseInt($.trim(options),10); // accepts " 2 "
// ignore out of bound pages
if ( page < 1 || page > anySlide.pages ) { return; }
anySlide.gotoPage(page);
}
});
}

};

})(jQuery);