(function($) {
	$.paginate = {
		defaults: {
			count: 0, // how many entries
			current: null, // current entry
			currentPage: 1, // current page (dont use current and currentPage at the same time)
			renderPages: 10, // how many pages are visible
			perPage: 10, // how many entries per page are shown
			jumpButtons: 1, // how many quick jump button on beginning or end (use false for disable)
			jumpButtonSpacer: ' ... ', // spacer between jump and page buttons
			invokerClass: 'paginate', // class for the invoker
			jumpButton: '<a href="#" class="button"></a>',
			prevButton: '<a href="#" class="button">«</a>', // use false for disable
			pageButton: '<a href="#" class="button"></a>',
			nextButton: '<a href="#" class="button">»</a>', // use false for disable
			disabledClass: 'disabled-button', // class for disabled prev or next button
			currentClass: 'current-button', // class for active page
			firstPage: 1, // don't change this
			onNext: function() {}, // called on next button click (return false for stop)
			onPrev: function() {}, // called on prev button click (return false for stop)
			onClick: function() {}, // called on any page click (return false for stop)
			onChange: function() {}, // called on any page change (return false for stop)
			onInit: function() {} // called on init (return false for stop)
		}
	};
	jQuery.fn.paginate = function(options) {
		options = $.extend({}, $.paginate.defaults, options);
		this.each(function() {
			$(this).empty().addClass(options.invokerClass);
			options.target = this;
			options.lastPage = Math.ceil(options.count / options.perPage);
			// calc where we are
			if(options.current) {
				options.currentPage = Math.floor(options.current / options.perPage) + 1;
				options.current = null;
			}
			var initCallback = options.onInit;
			options.onInit = null;
			if(options.onInit && options.onInit(options) == false) {
				return;
			}
			// Nothing to do
			if(options.count == 0) {
				return;
			}
			var changeCallback = function(newOpt) {
				if(options.onChange(newOpt) != false) {
					$(options.target).paginate(newOpt);
				}
			return false;
			};
			var clickCallback = function() {
				var newOptions = options;
				newOptions.currentPage = Math.min(options.lastPage, this.id);
				if(newOptions.onClick(newOptions) != false) {
					changeCallback(newOptions);
				}
				return false;
			};
			var prevCallback = function() {
				var newOptions = options;
				newOptions.currentPage = Math.max(options.firstPage, options.currentPage - 1);
				if(newOptions.onPrev(newOptions) != false) {
					changeCallback(newOptions);
				}
				return false;
			};
            $(this).bind('prevPage', prevCallback);
			var nextCallback = function() {
				var newOptions = options;
				newOptions.currentPage = Math.min(options.lastPage, options.currentPage + 1);
				if(newOptions.onNext(newOptions) != false) {
					changeCallback(newOptions);
				}
				return false;
			};
			$(this).bind('nextPage', nextCallback);
			// The center of rendered pages - the current one
			var centerPage = Math.ceil((options.renderPages - 1) / 2);
			var renderStart = Math.max(options.firstPage, options.currentPage - centerPage);
			var renderEnd = Math.min(options.lastPage, renderStart + options.renderPages - 1);
			// We are at the end and need to prepend some pages to fill
			var pageFill = options.renderPages - ((renderEnd - renderStart) + 1);
			if(pageFill < options.renderPages) {
				renderStart = renderStart - pageFill;
			} else {
				renderStart -= pageFill;
			}
			renderStart = Math.max(options.firstPage, renderStart);
			if(options.prevButton != false) {
				$(this).append(
					$(options.prevButton).click(prevCallback).each(function() {
						if(options.currentPage == options.firstPage) {
							$(this).addClass(options.disabledClass);
						}
					})
				);
			}
			var node = null;
			if(options.jumpButtons != false) {
				if(options.currentPage > (options.lastPage / 2) && renderStart > options.firstPage && options.lastPage > options.jumpButtons) {
					for(var jumpButton = options.firstPage; jumpButton <= options.jumpButtons + 1; jumpButton++) {
						node = $(options.pageButton).append(jumpButton).click(clickCallback).attr('id', jumpButton);
						if(jumpButton == options.jumpButtons + 1) {
							$(this).append(options.jumpButtonSpacer);
						}
						$(this).append(node);
					}
				}
			}
			for(var renderPage = renderStart; renderPage <= renderEnd; renderPage++) {
				node = $(options.pageButton).append(renderPage).click(clickCallback).attr('id', renderPage);
				if(renderPage == options.currentPage) {
					node.addClass(options.currentClass);
				}
				$(this).append(node);
			}
			if(options.jumpButtons != false) {
				var firstJumpButton = Math.max(options.firstPage, options.lastPage - options.jumpButtons + 1);
				if(options.lastPage > options.renderPages && renderEnd < firstJumpButton) {
					for(var jumpButton = firstJumpButton; jumpButton <= options.lastPage; jumpButton++) {
						node = $(options.pageButton).append(jumpButton).click(clickCallback).attr('id', jumpButton);
						if(jumpButton == firstJumpButton) {
							$(this).append(options.jumpButtonSpacer);
						}
						$(this).append(node);
					}
				}
			}
			if(options.nextButton != false) {
				$(this).append(
					$(options.nextButton).click(nextCallback).each(function() {
						if(options.currentPage == options.lastPage) {
							$(this).addClass(options.disabledClass);
						}
					})
				);
			}
			return this;
		});
	};
})(jQuery);