/*
 * jQuery Nivo Slider v2.0
 * http://nivo.dev7studios.com
 *
 * Copyright 2010, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 * 
 * May 2010 - Pick random effect from specified set of effects by toronegro
 * May 2010 - controlNavThumbsFromRel option added by nerd-sh
 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski
 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)
 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)
 * 
 * KRopa modified "reverse" to "_reverse" to resolve conflict between prototype.js and jQuery.
 * http://github.com/gilbitron/Nivo-Slider/issues#issue/35
 * 
 * KRopa modified script to correct linking issue..
 * http://github.com/gilbitron/Nivo-Slider/issues#issue/45
 * 
 */

(function($) {

	$.fn.nivoSlider = function(options) {

		// Defaults are below
		var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

		return this.each(function() {
			// Useful variables. Play carefully.
				var vars = {
					currentSlide : 0,
					currentImage : '',
					totalSlides : 0,
					randAnim : '',
					running : false,
					paused : false,
					stop : false
				};

				// Get this slider
				var slider = $(this);
				slider.data('nivo:vars', vars);
				slider.css('position', 'relative');
				slider.addClass('nivoSlider');

				// Find our slider children
				var kids = slider.children();
				kids.each(function() {
					var child = $(this);
					var childlink;
					if (!child.is('img')) {
						if (child.is('a')) {
							child.addClass('nivo-imageLink');
						}
						childlink = child;
						child = child.find('img:first');
					}
					// Don't ask
						var childWidth = child.width();
						if (childWidth == 0)
							childWidth = child.attr('width');
						var childHeight = child.height();
						if (childHeight == 0)
							childHeight = child.attr('height');
						// Resize the slider
						if (childWidth > slider.width()) {
							slider.width(childWidth);
						}
						if (childHeight > slider.height()) {
							slider.height(childHeight);
						}
						childlink.css('display', 'none');
						vars.totalSlides++;
					});

				// Set startSlide
				if (settings.startSlide > 0) {
					if (settings.startSlide >= vars.totalSlides)
						settings.startSlide = vars.totalSlides - 1;
					vars.currentSlide = settings.startSlide;
				}

				// Get initial image
				if ($(kids[vars.currentSlide]).is('img')) {
					vars.currentImage = $(kids[vars.currentSlide]);
				} else {
					vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
				}

				// Show initial link
				if ($(kids[vars.currentSlide]).is('a')) {
					$(kids[vars.currentSlide]).css('display', 'block');
				}

				// Set first background
				slider.css('background',
						'url(' + vars.currentImage.attr('src') + ') no-repeat');

				// Add initial slices
				for (var i = 0; i < settings.slices; i++) {
					var sliceWidth = Math.round(slider.width() / settings.slices);
					if (i == settings.slices - 1) {
						slider.append($('<div class="nivo-slice"></div>').css( {
							left : (sliceWidth * i) + 'px',
							width : (slider.width() - (sliceWidth * i)) + 'px'
						}));
					} else {
						slider.append($('<div class="nivo-slice"></div>').css( {
							left : (sliceWidth * i) + 'px',
							width : sliceWidth + 'px'
						}));
					}
				}

				// Create caption
				slider.append($('<div class="nivo-caption"><p></p></div>').css(
						{
							display : 'none',
							opacity : settings.captionOpacity
						}));
				// Process initial caption
				if (vars.currentImage.attr('title') != '') {
					$('.nivo-caption p', slider).html(
							vars.currentImage.attr('title'));
					$('.nivo-caption', slider).fadeIn(settings.animSpeed);
				}

				// In the words of Super Mario "let's a go!"
				var timer = 0;
				if (!settings.manualAdvance && kids.length > 1) {
					timer = setInterval(function() {
						nivoRun(slider, kids, settings, false);
					}, settings.pauseTime);
				}

				// Add Direction nav
				if (settings.directionNav) {
					slider.append('<div class="nivo-directionNav"><a class="nivo-prevNav">Prev</a><a class="nivo-nextNav">Next</a></div>');

					// Hide Direction nav
					if (settings.directionNavHide) {
						$('.nivo-directionNav', slider).hide();
						slider.hover(function() {
							$('.nivo-directionNav', slider).show();
						}, function() {
							$('.nivo-directionNav', slider).hide();
						});
					}

					$('a.nivo-prevNav', slider).live('click', function() {
						if (vars.running)
							return false;
						clearInterval(timer);
						timer = '';
						vars.currentSlide -= 2;
						nivoRun(slider, kids, settings, 'prev');
					});

					$('a.nivo-nextNav', slider).live('click', function() {
						if (vars.running)
							return false;
						clearInterval(timer);
						timer = '';
						nivoRun(slider, kids, settings, 'next');
					});
				}

				// Add Control nav
				if (settings.controlNav) {
					var nivoControl = $('<div class="nivo-controlNav"></div>');
					slider.append(nivoControl);
					for ( var i = 0; i < kids.length; i++) {
						if (settings.controlNavThumbs) {
							var child = kids.eq(i);
							if (!child.is('img')) {
								child = child.find('img:first');
							}
							if (settings.controlNavThumbsFromRel) {
								nivoControl
										.append('<a class="nivo-control" rel="'
												+ i + '"><img src="'
												+ child.attr('rel')
												+ '" alt="" /></a>');
							} else {
								nivoControl
										.append('<a class="nivo-control" rel="'
												+ i
												+ '"><img src="'
												+ child
														.attr('src')
														.replace(
																settings.controlNavThumbsSearch,
																settings.controlNavThumbsReplace)
												+ '" alt="" /></a>');
							}
						} else {
							nivoControl.append('<a class="nivo-control" rel="'
									+ i + '">' + i + '</a>');
						}

					}
					// Set initial active link
					$('.nivo-controlNav a:eq(' + vars.currentSlide + ')',
							slider).addClass('active');

					$('.nivo-controlNav a', slider)
							.live(
									'click',
									function() {
										if (vars.running)
											return false;
										if ($(this).hasClass('active'))
											return false;
										clearInterval(timer);
										timer = '';
										slider
												.css(
														'background',
														'url(' + vars.currentImage.attr('src') + ') no-repeat');
										vars.currentSlide = $(this).attr('rel') - 1;
										nivoRun(slider, kids, settings,
												'control');
									});
				}

				// Keyboard Navigation
				if (settings.keyboardNav) {
					$(window).keypress(function(event) {
						// Left
							if (event.keyCode == '37') {
								if (vars.running)
									return false;
								clearInterval(timer);
								timer = '';
								vars.currentSlide -= 2;
								nivoRun(slider, kids, settings, 'prev');
							}
							// Right
							if (event.keyCode == '39') {
								if (vars.running)
									return false;
								clearInterval(timer);
								timer = '';
								nivoRun(slider, kids, settings, 'next');
							}
						});
				}

				// For pauseOnHover setting
				if (settings.pauseOnHover) {
					slider.hover(function() {
						vars.paused = true;
						clearInterval(timer);
						timer = '';
					}, function() {
						vars.paused = false;
						// Restart the timer
							if (timer == '' && !settings.manualAdvance) {
								timer = setInterval(function() {
									nivoRun(slider, kids, settings, false);
								}, settings.pauseTime);
							}
						});
				}

				// Event when Animation finishes
				slider.bind('nivo:animFinished', function() {
					vars.running = false;
					// Hide child links
						$(kids).each(function() {
							if ($(this).is('a')) {
								$(this).css('display', 'none');
							}
						});
						// Show current link
						if ($(kids[vars.currentSlide]).is('a')) {
							$(kids[vars.currentSlide]).css('display', 'block');
						}
						// Restart the timer
						if (timer == '' && !vars.paused
								&& !settings.manualAdvance) {
							timer = setInterval(function() {
								nivoRun(slider, kids, settings, false);
							}, settings.pauseTime);
						}
						// Trigger the afterChange callback
						settings.afterChange.call(this);
					});
			});

		function nivoRun(slider, kids, settings, nudge) {
			// Get our vars
			var vars = slider.data('nivo:vars');
			if ((!vars || vars.stop) && !nudge)
				return false;

			// Trigger the beforeChange callback
			settings.beforeChange.call(this);

			// Set current background before change
			if (!nudge) {
				slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
			} else {
				if (nudge == 'prev') {
					slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
				}
				if (nudge == 'next') {
					slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat');
				}
			}
			vars.currentSlide++;
			if (vars.currentSlide == vars.totalSlides) {
				vars.currentSlide = 0;
				// Trigger the slideshowEnd callback
				settings.slideshowEnd.call(this);
			}
			if (vars.currentSlide < 0)
				vars.currentSlide = (vars.totalSlides - 1);
			// Set vars.currentImage
			if ($(kids[vars.currentSlide]).is('img')) {
				vars.currentImage = $(kids[vars.currentSlide]);
			} else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
			}

			// Set acitve links
			if (settings.controlNav) {
				$('.nivo-controlNav a', slider).removeClass('active');
				$('.nivo-controlNav a:eq(' + vars.currentSlide + ')', slider).addClass('active');
			}

			// Process caption
			if (vars.currentImage.attr('title') != '') {
				if ($('.nivo-caption', slider).css('display') == 'block') {
					$('.nivo-caption p', slider).fadeOut(settings.animSpeed,
							function() {
								$(this).html(vars.currentImage.attr('title'));
								$(this).fadeIn(settings.animSpeed);
							});
				} else {
					$('.nivo-caption p', slider).html(
							vars.currentImage.attr('title'));
				}
				$('.nivo-caption', slider).fadeIn(settings.animSpeed);
			} else {
				$('.nivo-caption', slider).fadeOut(settings.animSpeed);
			}

			// Set new slice backgrounds
			var i = 0;
			$('.nivo-slice', slider)
					.each(
							function() {
								var sliceWidth = Math.round(slider.width()
										/ settings.slices);
								$(this)
										.css(
												{
													height : '0px',
													opacity : '0',
													background : 'url('
															+ vars.currentImage.attr('src')
															+ ') no-repeat -'
															+ ((sliceWidth + (i * sliceWidth)) - sliceWidth)
															+ 'px 0%'
												});
								i++;
							});

			if (settings.effect == 'random') {
				var anims = new Array("sliceDownRight", "sliceDownLeft",
						"sliceUpRight", "sliceUpLeft", "sliceUpDown",
						"sliceUpDownLeft", "fold", "fade");
				vars.randAnim = anims[Math.floor(Math.random() * (anims.length + 1))];
				if (vars.randAnim == undefined)
					vars.randAnim = 'fade';
			}

			// Run random effect from specified set (eg: effect:'fold,fade')
			if (settings.effect.indexOf(',') != -1) {
				var anims = settings.effect.split(',');
				vars.randAnim = $.trim(anims[Math.floor(Math.random() * anims.length)]);
			}

			// Run effects
			vars.running = true;
			if (settings.effect == 'sliceDown'
					|| settings.effect == 'sliceDownRight'
					|| vars.randAnim == 'sliceDownRight'
					|| settings.effect == 'sliceDownLeft'
					|| vars.randAnim == 'sliceDownLeft') {
				var timeBuff = 0;
				var i = 0;
				var slices = $('.nivo-slice', slider);
				if (settings.effect == 'sliceDownLeft'
						|| vars.randAnim == 'sliceDownLeft')
					slices = $('.nivo-slice', slider).reverse();
				slices.each(function() {
					var slice = $(this);
					slice.css('top', '0px');
					if (i == settings.slices - 1) {
						setTimeout(function() {
							slice.animate( {
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});
						}, (100 + timeBuff));
					} else {
						setTimeout(function() {
							slice.animate( {
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			} else if (settings.effect == 'sliceUp'
					|| settings.effect == 'sliceUpRight'
					|| vars.randAnim == 'sliceUpRight'
					|| settings.effect == 'sliceUpLeft'
					|| vars.randAnim == 'sliceUpLeft') {
				var timeBuff = 0;
				var i = 0;
				var slices = $('.nivo-slice', slider);
				if (settings.effect == 'sliceUpLeft'
						|| vars.randAnim == 'sliceUpLeft')
					slices = $('.nivo-slice', slider).reverse();
				slices.each(function() {
					var slice = $(this);
					slice.css('bottom', '0px');
					if (i == settings.slices - 1) {
						setTimeout(function() {
							slice.animate( {
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});
						}, (100 + timeBuff));
					} else {
						setTimeout(function() {
							slice.animate( {
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			} else if (settings.effect == 'sliceUpDown'
					|| settings.effect == 'sliceUpDownRight'
					|| vars.randAnim == 'sliceUpDown'
					|| settings.effect == 'sliceUpDownLeft'
					|| vars.randAnim == 'sliceUpDownLeft') {
				var timeBuff = 0;
				var i = 0;
				var v = 0;
				var slices = $('.nivo-slice', slider);
				if (settings.effect == 'sliceUpDownLeft'
						|| vars.randAnim == 'sliceUpDownLeft')
					slices = $('.nivo-slice', slider).reverse();
				slices.each(function() {
					var slice = $(this);
					if (i == 0) {
						slice.css('top', '0px');
						i++;
					} else {
						slice.css('bottom', '0px');
						i = 0;
					}

					if (v == settings.slices - 1) {
						setTimeout(function() {
							slice.animate( {
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});
						}, (100 + timeBuff));
					} else {
						setTimeout(function() {
							slice.animate( {
								height : '100%',
								opacity : '1.0'
							}, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					v++;
				});
			} else if (settings.effect == 'fold' || vars.randAnim == 'fold') {
				var timeBuff = 0;
				var i = 0;
				$('.nivo-slice', slider).each(function() {
					var slice = $(this);
					var origWidth = slice.width();
					slice.css( {
						top : '0px',
						height : '100%',
						width : '0px'
					});
					if (i == settings.slices - 1) {
						setTimeout(function() {
							slice.animate( {
								width : origWidth,
								opacity : '1.0'
							}, settings.animSpeed, '', function() {
								slider.trigger('nivo:animFinished');
							});
						}, (100 + timeBuff));
					} else {
						setTimeout(function() {
							slice.animate( {
								width : origWidth,
								opacity : '1.0'
							}, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			} else if (settings.effect == 'fade' || vars.randAnim == 'fade') {
				var i = 0;
				$('.nivo-slice', slider).each(function() {
					$(this).css('height', '100%');
					if (i == settings.slices - 1) {
						$(this).animate( {
							opacity : '1.0'
						}, (settings.animSpeed * 2), '', function() {
							slider.trigger('nivo:animFinished');
						});
					} else {
						$(this).animate( {
							opacity : '1.0'
						}, (settings.animSpeed * 2));
					}
					i++;
				});
			}
		}
	};

	// Default settings
	$.fn.nivoSlider.defaults = {
		effect : 'random',
		slices : 15,
		animSpeed : 500,
		pauseTime : 3000,
		startSlide : 0,
		directionNav : true,
		directionNavHide : true,
		controlNav : true,
		controlNavThumbs : false,
		controlNavThumbsFromRel : false,
		controlNavThumbsSearch : '.jpg',
		controlNavThumbsReplace : '_thumb.jpg',
		keyboardNav : true,
		pauseOnHover : true,
		manualAdvance : false,
		captionOpacity : 0.8,
		beforeChange : function() {},
		afterChange : function() {},
		slideshowEnd : function() {}
	};

	$.fn.reverse = []._reverse;

})(jQuery);