/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 *
 * Open source under the BSD License.
 *
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 *
 * Neither the name of the author nor the names of contributors may be used to endorse
 * or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *	COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *	EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *	GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
	def: 'easeOutQuad',
	swing: function (x, t, b, c, d) {
		//alert(jQuery.easing.default);
		return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
	},
	easeInQuad: function (x, t, b, c, d) {
		return c*(t/=d)*t + b;
	},
	easeOutQuad: function (x, t, b, c, d) {
		return -c *(t/=d)*(t-2) + b;
	},
	easeInOutQuad: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t + b;
		return -c/2 * ((--t)*(t-2) - 1) + b;
	},
	easeInCubic: function (x, t, b, c, d) {
		return c*(t/=d)*t*t + b;
	},
	easeOutCubic: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t + 1) + b;
	},
	easeInOutCubic: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t + b;
		return c/2*((t-=2)*t*t + 2) + b;
	},
	easeInQuart: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t + b;
	},
	easeOutQuart: function (x, t, b, c, d) {
		return -c * ((t=t/d-1)*t*t*t - 1) + b;
	},
	easeInOutQuart: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
		return -c/2 * ((t-=2)*t*t*t - 2) + b;
	},
	easeInQuint: function (x, t, b, c, d) {
		return c*(t/=d)*t*t*t*t + b;
	},
	easeOutQuint: function (x, t, b, c, d) {
		return c*((t=t/d-1)*t*t*t*t + 1) + b;
	},
	easeInOutQuint: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
		return c/2*((t-=2)*t*t*t*t + 2) + b;
	},
	easeInSine: function (x, t, b, c, d) {
		return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
	},
	easeOutSine: function (x, t, b, c, d) {
		return c * Math.sin(t/d * (Math.PI/2)) + b;
	},
	easeInOutSine: function (x, t, b, c, d) {
		return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
	},
	easeInExpo: function (x, t, b, c, d) {
		return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
	},
	easeOutExpo: function (x, t, b, c, d) {
		return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
	},
	easeInOutExpo: function (x, t, b, c, d) {
		if (t==0) return b;
		if (t==d) return b+c;
		if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
		return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
	},
	easeInCirc: function (x, t, b, c, d) {
		return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
	},
	easeOutCirc: function (x, t, b, c, d) {
		return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
	},
	easeInOutCirc: function (x, t, b, c, d) {
		if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
		return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
	},
	easeInElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;	 if ((t/=d)==1) return b+c;	 if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
	},
	easeOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;	 if ((t/=d)==1) return b+c;	 if (!p) p=d*.3;
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
	},
	easeInOutElastic: function (x, t, b, c, d) {
		var s=1.70158;var p=0;var a=c;
		if (t==0) return b;	 if ((t/=d/2)==2) return b+c;	 if (!p) p=d*(.3*1.5);
		if (a < Math.abs(c)) { a=c; var s=p/4; }
		else var s = p/(2*Math.PI) * Math.asin (c/a);
		if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
		return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
	},
	easeInBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*(t/=d)*t*((s+1)*t - s) + b;
	},
	easeOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
	},
	easeInOutBack: function (x, t, b, c, d, s) {
		if (s == undefined) s = 1.70158;
		if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
		return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
	},
	easeInBounce: function (x, t, b, c, d) {
		return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
	},
	easeOutBounce: function (x, t, b, c, d) {
		if ((t/=d) < (1/2.75)) {
			return c*(7.5625*t*t) + b;
		} else if (t < (2/2.75)) {
			return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
		} else if (t < (2.5/2.75)) {
			return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
		} else {
			return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
		}
	},
	easeInOutBounce: function (x, t, b, c, d) {
		if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
		return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
	}
});

/*
 * end EASING EQUATIONS
 */

//Store information in class names
jQuery.fn.extend({
	getClassValue: function(classStart) {
		var defaultValue = arguments[1] || false;
		classStart+='-';
		var result = defaultValue;
		jQuery.each(this.get(0).className.toString().split(/\s+/), function(i, val) {
			if(val.indexOf(classStart) === 0) {
				result = val.substring(classStart.length);
				return false;
			}
		});
		return result;
	}
});

jQuery(function() {
	var overlay_image_wrappers = jQuery('.overlay_image_wrapper').each(function() {
		var overlay_image_wrapper = jQuery(this);
		if(overlay_image_wrapper.children().length < 2) {
			return;
		}

		// Init
		overlay_image_wrapper.children().addClass('bottom_element').filter(":first").
		addClass('top_element').removeClass('bottom_element').next().addClass('next_element').removeClass('bottom_element');

		var animation_type = overlay_image_wrapper.getClassValue('animation-type', 'cover');
		var animation = OverlayAnimations[animation_type];
		animation.position_next_element(overlay_image_wrapper.children('.next_element'));
		// overlay_image_wrapper.css({width: overlay_image_wrapper.width()});
		var animation_duration = parseInt(overlay_image_wrapper.getClassValue('animation-duration', 2500));
		var animation_curve = overlay_image_wrapper.getClassValue('animation-curve', 'easeOutExpo');

		// Run
		overlay_image_wrapper.bind('next-overlay', function() {
			if(overlay_image_wrapper.data('is_animating')) {
				return;
			}
			overlay_image_wrapper.data('is_animating', true);
			var top_element = overlay_image_wrapper.children('.top_element');
			var next_element = overlay_image_wrapper.children('.next_element');
			overlay_image_wrapper.trigger('animate-next-overlay', {top_element: top_element, next_element: next_element});
			animation.animate(top_element, next_element, animation_duration, animation_curve, function() {
				top_element.removeClass('top_element').addClass('bottom_element');
				next_element.addClass('top_element').removeClass('next_element');
				var new_next_element = next_element.next();
				if(new_next_element.length === 0) {
					new_next_element = overlay_image_wrapper.children('.bottom_element:first');
				}
				new_next_element.removeClass('bottom_element').addClass('next_element');
				animation.cleanup(top_element, next_element, new_next_element);
				animation.position_next_element(new_next_element);

				overlay_image_wrapper.data('is_animating', false);
				overlay_image_wrapper.trigger('next-overlay-finished');
			});
		});
	});
});

var OverlayAnimations = {
	cover: {
		position_next_element: function(next_element) {
			next_element.css({left: (next_element.width())+"px"});
		},
		animate: function(top_element, next_element, animation_duration, animation_curve, callback) {
			next_element.animate({
				left: 0
			}, {duration: animation_duration, easing: animation_curve, complete: callback, queue: false});
		},
		cleanup: function(top_element, next_element, new_next_element) {
			next_element.css({left: ''});
		}
	},
	fadeWhite: {
		position_next_element: function(next_element) {
			next_element.css({opacity: 0});
		},
		animate: function(top_element, next_element, animation_duration, animation_curve, callback) {
			top_element.animate({opacity: 0}, {duration: animation_duration/2, easing: animation_curve.replace(/InOut/, "In"), complete: function() {
				next_element.animate({opacity: 1}, {duration: animation_duration/2, easing: animation_curve.replace(/InOut/, "Out"), complete: callback});
			}});
		},
		cleanup: function(top_element, next_element, new_next_element) {
			next_element.css({opacity: ''});
		}
	},
	dissolve: {
		position_next_element: function(next_element) {
			next_element.css({opacity: 0});
		},
		animate: function(top_element, next_element, animation_duration, animation_curve, callback) {
			next_element.animate({opacity: 1}, {duration: animation_duration, easing: animation_curve, complete: callback});
		},
		cleanup: function(top_element, next_element, new_next_element) {
			next_element.css({opacity: ''});
		}
	},
	hardCut: {
	  position_next_element: function(next_element) {},
		animate: function(top_element, next_element, animation_duration, animation_curve, callback) {
			callback();
		},
		cleanup: function(top_element, next_element, new_next_element) {}
	}
}

OverlayAnimations.push = {
	position_next_element: OverlayAnimations.cover.position_next_element,
	animate: function(top_element, next_element, animation_duration, animation_curve, callback) {
		OverlayAnimations.cover.animate(top_element, next_element, animation_duration, animation_curve, callback);
		top_element.animate({
			marginLeft: "-"+(top_element.width()-1)+"px"
		}, {duration: animation_duration, easing: animation_curve, queue: false, complete: function() {
			top_element.css({marginLeft: null});
		}});
	},
	cleanup: function(top_element, next_element, new_next_element) {
		top_element.css({left: ''});
		next_element.css({left: ''});
	}
};