Carousel = Class.create(Abstract, {initialize: function (scroller, slides, controls, options) {this.scrolling = false;this.scroller = $(scroller);this.slides = slides;this.controls = controls;this.pausestatus = false;this.options = Object.extend({duration: 2,auto: true,frequency: 8,visibleSlides: 1,controlClassName: 'carousel-control',jumperClassName: 'carousel-jumper',disabledClassName: 'carousel-disabled',selectedClassName: 'carousel-selected',circular: true,wheel: false,effect: 'scroll',transition: 'sinodal' //sinodal, spring
}, options || {});if (this.options.effect == 'fade') {this.options.circular = true;}
this.slides.each(function(slide, index) {slide._index = index;});if (this.controls) {this.controls.invoke('observe', 'click', this.click.bind(this));this.controls.invoke('observe', 'keydown', this.keydown.bind(this));}
this.scroller.select('a').each(function(a) {a.observe('focus',function(event) {event.stop();this.stop();target = (event.currentTarget) ? event.currentTarget : event.srcElement;this.moveTo(event.target.up('.slide'));this.start();}.bind(this))
}.bind(this));if (this.options.wheel) {this.scroller.observe('mousewheel', this.wheel.bindAsEventListener(this)).observe('DOMMouseScroll', this.wheel.bindAsEventListener(this));}
if (this.options.auto) {this.start();}
if (this.options.initial) {var initialIndex = this.slides.indexOf($(this.options.initial));if (initialIndex > (this.options.visibleSlides - 1) && this.options.visibleSlides > 1) {if (initialIndex > this.slides.length - (this.options.visibleSlides + 1)) {initialIndex = this.slides.length - this.options.visibleSlides;}
}
this.moveTo(this.slides[initialIndex]);}
},keydown: function (event) {var element = event.findElement('a');var key = 0;if (window.event) {key = window.event.keyCode;} else if (event) {key = event.keyCode;}
if (key == 13) {this.aevent(element);event.stop();this.stop();}
},click: function (event) {this.stop();var element = event.findElement('a');this.aevent(element);event.stop();},aevent: function (element) {if (!element.hasClassName(this.options.disabledClassName)) {if (element.hasClassName(this.options.controlClassName)) {eval("this." + element.rel + "()");} else if (element.hasClassName(this.options.jumperClassName)) {this.moveTo(element.rel);if (this.options.selectedClassName) {this.controls.invoke('removeClassName', this.options.selectedClassName);element.addClassName(this.options.selectedClassName);}
}
}
this.stop();},moveTo: function (element) {if (this.options.beforeMove && (typeof this.options.beforeMove == 'function')) {this.options.beforeMove();}
this.previous = this.current ? this.current : this.slides[0];this.current = $(element);var scrollerOffset = this.scroller.cumulativeOffset();var elementOffset = this.current.cumulativeOffset();if (this.scrolling) {this.scrolling.cancel();}
switch (this.options.effect) {case 'fade':
this.scrolling = new Effect.Opacity(this.scroller, {from: 1.0,to: 0,duration: this.options.duration,afterFinish: (function () {this.scroller.scrollLeft = elementOffset[0] - scrollerOffset[0];this.scroller.scrollTop = elementOffset[1] - scrollerOffset[1];new Effect.Opacity(this.scroller, {from: 0,to: 1.0,duration: this.options.duration,afterFinish: (function () {if (this.controls) {this.activateControls();}
if (this.options.afterMove && (typeof this.options.afterMove == 'function')) {this.options.afterMove();}
}).bind(this)
});}
).bind(this)});break;case 'scroll':
default:
var transition;switch (this.options.transition) {case 'spring':
transition = Effect.Transitions.spring;break;case 'sinoidal':
default:
transition = Effect.Transitions.sinoidal;break;}
this.scrolling = new Effect.SmoothScroll(this.scroller, {duration: this.options.duration,x: (elementOffset[0] - scrollerOffset[0]),y: (elementOffset[1] - scrollerOffset[1]),transition: transition,afterFinish: (function () {if (this.controls) {this.activateControls();}
if (this.options.afterMove && (typeof this.options.afterMove == 'function')) {this.options.afterMove();}
this.scrolling = false;}).bind(this)});break;}
return false;},prev: function () {if (this.current) {var currentIndex = this.current._index;var prevIndex = (currentIndex == 0) ? (this.options.circular ? this.slides.length - 1 : 0) : currentIndex - 1;} else {var prevIndex = (this.options.circular ? this.slides.length - 1 : 0);}
if (prevIndex == (this.slides.length - 1) && this.options.circular && this.options.effect != 'fade') {this.scroller.scrollLeft = (this.slides.length - 1) * this.slides.first().getWidth();this.scroller.scrollTop = (this.slides.length - 1) * this.slides.first().getHeight();prevIndex = this.slides.length - 2;}
this.moveTo(this.slides[prevIndex]);},next: function () {if (this.current) {var currentIndex = this.current._index;var nextIndex = (this.slides.length - 1 == currentIndex) ? (this.options.circular ? 0 : currentIndex) : currentIndex + 1;} else {var nextIndex = 1;}
if(nextIndex == 0) {this.options.effect = 'fade';} else {this.options.effect = 'scroll';}
this.moveTo(this.slides[nextIndex]);},first: function () {this.moveTo(this.slides[0]);},last: function () {this.moveTo(this.slides[this.slides.length - 1]);},toggle: function () {if (this.previous) {this.moveTo(this.slides[this.previous._index]);} else {return false;}
},stop: function () {if (this.timer) {clearTimeout(this.timer);}
},playpause: function () {if(this.pausestatus == false) {$("playpause").update('
');this.pausestatus = true;this.pause();} else {$("playpause").update('
');this.pausestatus = false;this.resume();}
},start: function () {this.periodicallyUpdate();},pause: function () {this.stop();this.activateControls();},resume: function (event) {if (event) {var related = event.relatedTarget || event.toElement;if (!related || (!this.slides.include(related) && !this.slides.any(function (slide) {return related.descendantOf(slide);}))) {this.start();}
} else {this.start();}
},periodicallyUpdate: function () {if (this.timer != null) {clearTimeout(this.timer);this.next();}
this.timer = setTimeout(this.periodicallyUpdate.bind(this), this.options.frequency * 1000);},wheel: function (event) {event.cancelBubble = true;if (event.stop) event.stop();var delta = 0;if (!event) {event = window.event;}
if (event.wheelDelta) {delta = event.wheelDelta / 120;} else if (event.detail) {delta = -event.detail / 3;}
if (!this.scrolling) {this.deactivateControls();if (delta > 0) {this.prev();} else {this.next();}
}
return Math.round(delta);},deactivateControls: function () {this.controls.invoke('addClassName', this.options.disabledClassName);},activateControls: function () {this.controls.invoke('removeClassName', this.options.disabledClassName);}
});Effect.SmoothScroll = Class.create();Object.extend(Object.extend(Effect.SmoothScroll.prototype, Effect.Base.prototype), {initialize: function (element) {this.element = $(element);var options = Object.extend({x: 0, y: 0, mode: 'absolute'} , arguments[1] || {});this.start(options);},setup: function () {if (this.options.continuous && !this.element._ext) {this.element.cleanWhitespace();this.element._ext = true;this.element.appendChild(this.element.firstChild);}
this.originalLeft = this.element.scrollLeft;this.originalTop = this.element.scrollTop;if (this.options.mode == 'absolute') {this.options.x -= this.originalLeft;this.options.y -= this.originalTop;}
},update: function (position) {this.element.scrollLeft = this.options.x * position + this.originalLeft;this.element.scrollTop = this.options.y * position + this.originalTop;}
});