/*
* jQuery Orbit Plugin 1.2.3
* www.ZURB.com/playground
* Copyright 2010, ZURB
* Free to use under the MIT license.
* http://www.opensource.org/licenses/mit-license.php
*/


(function ($) {

    $.fn.orbit = function (options) {

        //Defaults to extend options
        var defaults = {
            animation: 'horizontal-push', 		// fade, horizontal-slide, vertical-slide, horizontal-push
            animationSpeed: 1200, 				// how fast animtions are
            timer: true, 						// true or false to have the timer
            advanceSpeed: 8000, 				// if timer is enabled, time between transitions 
            pauseOnHover: false, 				// if you hover pauses the slider
            startClockOnMouseOut: false, 		// if clock should start on MouseOut
            startClockOnMouseOutAfter: 1000, 	// how long after MouseOut should the timer start again
            directionalNav: true, 				// manual advancing directional navs
            captions: true, 					// do you want captions?
            captionAnimation: 'none', 			// fade, slideOpen, none
            captionAnimationSpeed: 600, 		// if so how quickly should they animate in
            bullets: false, 					// true or false to activate the bullet navigation
            bulletThumbs: false, 			// thumbnails for the bullets
            bulletThumbLocation: '', 		// location from this file where thumbs will be
            afterSlideChange: function () { } 		// empty function 
        };

        //Extend those options
        var options = $.extend(defaults, options);

        return this.each(function () {

            // ==============
            // ! SETUP   
            // ==============

            //Global Variables
            var activeSlide = 0,
            	numberSlides = 0,
            	orbitWidth,
            	orbitHeight,
            	locked;

            //Initialize
            var orbit = $(this).addClass('orbit'),
            	orbitWrapper = orbit.wrap('<div class="orbit-wrapper" />').parent();
            orbit.add(orbitWidth).width('1px').height('1px');

            //Collect all slides and set slider size of largest image
            var slides = orbit.children('img, a, div');
            slides.each(function () {
                var _slide = $(this),
                	_slideWidth = _slide.width(),
                	_slideHeight = _slide.height();
                if (_slideWidth > orbit.width()) {
                    orbit.add(orbitWrapper).width(_slideWidth);
                    orbitWidth = orbit.width();
                }
                if (_slideHeight > orbit.height()) {
                    orbit.add(orbitWrapper).height(_slideHeight);
                    orbitHeight = orbit.height();
                }
                numberSlides++;
            });

            //Animation locking functions
            function unlock() {
                locked = false;
            }
            function lock() {
                locked = true;
            }

            //If there is only a single slide remove nav, timer and bullets
            if (slides.length == 1) {
                options.directionalNav = false;
                options.timer = false;
                options.bullets = false;
            }

            //Set initial front photo z-index and fades it in
            slides.eq(activeSlide)
            	.css({ "z-index": 3 })
            	.fadeIn(function () {
            	    //brings in all other slides IF css declares a display: none
            	    slides.css({ "display": "block" })
            	});

            // ==============
            // ! TIMER   
            // ==============

            //Timer Execution
            function startClock() {
                if (!options.timer || options.timer == 'false') {
                    return false;
                    //if timer is hidden, don't need to do crazy calculations
                } else if (timer.is(':hidden')) {
                    clock = setInterval(function (e) {
                        shift("next");
                    }, options.advanceSpeed);
                    //if timer is visible and working, let's do some math
                } else {
                    timerRunning = true;
                    pause.removeClass('active')
                    clock = setInterval(function (e) {
                        var degreeCSS = "rotate(" + degrees + "deg)"
                        degrees += 2
                        rotator.css({
                            "-webkit-transform": degreeCSS,
                            "-moz-transform": degreeCSS,
                            "-o-transform": degreeCSS
                        });
                        if (degrees > 180) {
                            rotator.addClass('move');
                            mask.addClass('move');
                        }
                        if (degrees > 360) {
                            rotator.removeClass('move');
                            mask.removeClass('move');
                            degrees = 0;
                            shift("next");
                        }
                    }, options.advanceSpeed / 180);
                }
            }
            function stopClock() {
                if (!options.timer || options.timer == 'false') { return false; } else {
                    timerRunning = false;
                    clearInterval(clock);
                    pause.addClass('active');
                }
            }

            //Timer Setup
            if (options.timer) {
                var timerHTML = '<div class="timer"><span class="mask"><span class="rotator"></span></span><span class="pause"></span></div>'
                orbitWrapper.append(timerHTML);
                var timer = $('div.timer'),
                	timerRunning;
                if (timer.length != 0) {
                    var rotator = $('div.timer span.rotator'),
                    	mask = $('div.timer span.mask'),
                    	pause = $('div.timer span.pause'),
                    	degrees = 0,
                    	clock;
                    startClock();
                    timer.click(function () {
                        if (!timerRunning) {
                            startClock();
                        } else {
                            stopClock();
                        }
                    });
                    if (options.startClockOnMouseOut) {
                        var outTimer;
                        orbitWrapper.mouseleave(function () {
                            outTimer = setTimeout(function () {
                                if (!timerRunning) {
                                    startClock();
                                }
                            }, options.startClockOnMouseOutAfter)
                        })
                        orbitWrapper.mouseenter(function () {
                            clearTimeout(outTimer);
                        })
                    }
                }
            }

            //Pause Timer on hover
            if (options.pauseOnHover) {
                orbitWrapper.mouseenter(function () {
                    stopClock();
                });
            }

            // ==============
            // ! CAPTIONS   
            // ==============

            //Caption Setup
            if (options.captions) {
                var captionHTML = '<div class="orbit-caption"></div>';
                orbitWrapper.append(captionHTML);
                var caption = orbitWrapper.children('.orbit-caption');
                setCaption();
            }

            //Caption Execution
            function setCaption() {
                if (!options.captions || options.captions == "false") {
                    return false;
                } else {
                    var _captionLocation = slides.eq(activeSlide).data('caption'); //get ID from rel tag on image
                    _captionHTML = $(_captionLocation).html(); //get HTML from the matching HTML entity            		
                    //Set HTML for the caption if it exists
                    if (_captionHTML) {
                        caption
		            		.attr('id', _captionLocation) // Add ID caption
		                	.html(_captionHTML); // Change HTML in Caption 
                        //Animations for Caption entrances
                        if (options.captionAnimation == 'none') {
                            caption.show();
                        }
                        if (options.captionAnimation == 'fade') {
                            caption.fadeIn(options.captionAnimationSpeed);
                        }
                        if (options.captionAnimation == 'slideOpen') {
                            caption.slideDown(options.captionAnimationSpeed);
                        }
                    } else {
                        //Animations for Caption exits
                        if (options.captionAnimation == 'none') {
                            caption.hide();
                        }
                        if (options.captionAnimation == 'fade') {
                            caption.fadeOut(options.captionAnimationSpeed);
                        }
                        if (options.captionAnimation == 'slideOpen') {
                            caption.slideUp(options.captionAnimationSpeed);
                        }
                    }
                }
            }

            // ==================
            // ! DIRECTIONAL NAV   
            // ==================

            //DirectionalNav { rightButton --> shift("next"), leftButton --> shift("prev");
            if (options.directionalNav) {
                if (options.directionalNav == "false") { return false; }
                var directionalNavHTML = '<div class="slider-nav"><span class="right">Right</span><span class="left">Left</span></div>';
                orbitWrapper.append(directionalNavHTML);
                var leftBtn = orbitWrapper.children('div.slider-nav').children('span.left'),
                	rightBtn = orbitWrapper.children('div.slider-nav').children('span.right');
                leftBtn.click(function () {
                    stopClock();
                    shift("prev");
                });
                rightBtn.click(function () {
                    stopClock();
                    shift("next")
                });
            }

            // ==================
            // ! BULLET NAV   
            // ==================

            //Bullet Nav Setup
            if (options.bullets) {
                var bulletHTML = '<ul class="orbit-bullets"></ul>';
                orbitWrapper.append(bulletHTML);
                var bullets = $('ul.orbit-bullets');
                for (i = 0; i < numberSlides; i++) {
                    var liMarkup = $('<li>' + (i + 1) + '</li>');
                    if (options.bulletThumbs) {
                        var thumbName = slides.eq(i).data('thumb');
                        if (thumbName) {
                            var liMarkup = $('<li class="has-thumb">' + i + '</li>')
                            liMarkup.css({ "background": "url(" + options.bulletThumbLocation + thumbName + ") no-repeat" });
                        }
                    }
                    $('ul.orbit-bullets').append(liMarkup);
                    liMarkup.data('index', i);
                    liMarkup.click(function () {
                        stopClock();
                        shift($(this).data('index'));
                    });
                }
                setActiveBullet();
            }

            //Bullet Nav Execution
            function setActiveBullet() {
                if (!options.bullets) { return false; } else {
                    bullets.children('li').removeClass('active').eq(activeSlide).addClass('active');
                }
            }

            // ====================
            // ! SHIFT ANIMATIONS   
            // ====================

            //Animating the shift!
            function shift(direction) {
                //remember previous activeSlide
                var prevActiveSlide = activeSlide,
                	slideDirection = direction;
                //exit function if bullet clicked is same as the current image
                if (prevActiveSlide == slideDirection) { return false; }
                //reset Z & Unlock
                function resetAndUnlock() {
                    slides
                    	.eq(prevActiveSlide)
                    	.css({ "z-index": 1 });
                    unlock();
                    options.afterSlideChange.call(this);
                }
                if (slides.length == "1") { return false; }
                if (!locked) {
                    lock();
                    //deduce the proper activeImage
                    if (direction == "next") {
                        activeSlide++
                        if (activeSlide == numberSlides) {
                            activeSlide = 0;
                        }
                    } else if (direction == "prev") {
                        activeSlide--
                        if (activeSlide < 0) {
                            activeSlide = numberSlides - 1;
                        }
                    } else {
                        activeSlide = direction;
                        if (prevActiveSlide < activeSlide) {
                            slideDirection = "next";
                        } else if (prevActiveSlide > activeSlide) {
                            slideDirection = "prev"
                        }
                    }
                    //set to correct bullet
                    setActiveBullet();

                    //set previous slide z-index to one below what new activeSlide will be
                    slides
                    	.eq(prevActiveSlide)
                    	.css({ "z-index": 2 });

                    //fade
                    if (options.animation == "fade") {
                        slides
                        	.eq(activeSlide)
                        	.css({ "opacity": 0, "z-index": 3 })
                        	.animate({ "opacity": 1 }, options.animationSpeed, resetAndUnlock);
                    }
                    //horizontal-slide
                    if (options.animation == "horizontal-slide") {
                        if (slideDirection == "next") {
                            slides
                            	.eq(activeSlide)
                            	.css({ "left": orbitWidth, "z-index": 3 })
                            	.animate({ "left": 0 }, options.animationSpeed, resetAndUnlock);
                        }
                        if (slideDirection == "prev") {
                            slides
                            	.eq(activeSlide)
                            	.css({ "left": -orbitWidth, "z-index": 3 })
                            	.animate({ "left": 0 }, options.animationSpeed, resetAndUnlock);
                        }
                    }
                    //vertical-slide
                    if (options.animation == "vertical-slide") {
                        if (slideDirection == "prev") {
                            slides
                            	.eq(activeSlide)
                            	.css({ "top": orbitHeight, "z-index": 3 })
                            	.animate({ "top": 0 }, options.animationSpeed, resetAndUnlock);
                        }
                        if (slideDirection == "next") {
                            slides
                            	.eq(activeSlide)
                            	.css({ "top": -orbitHeight, "z-index": 3 })
                            	.animate({ "top": 0 }, options.animationSpeed, resetAndUnlock);
                        }
                    }
                    //push-over
                    if (options.animation == "horizontal-push") {
                        if (slideDirection == "next") {
                            slides
                            	.eq(activeSlide)
                            	.css({ "left": orbitWidth, "z-index": 3 })
                            	.animate({ "left": 0 }, options.animationSpeed, resetAndUnlock);
                            slides
                            	.eq(prevActiveSlide)
                            	.animate({ "left": -orbitWidth }, options.animationSpeed);
                        }
                        if (slideDirection == "prev") {
                            slides
                            	.eq(activeSlide)
                            	.css({ "left": -orbitWidth, "z-index": 3 })
                            	.animate({ "left": 0 }, options.animationSpeed, resetAndUnlock);
                            slides
                            	.eq(prevActiveSlide)
                            	.animate({ "left": orbitWidth }, options.animationSpeed);
                        }
                    }
                    setCaption();
                } //lock
            } //orbit function
        }); //each call
    } //orbit plugin call
})(jQuery);
        
