/*! * jCarousel - Riding carousels with jQuery * http://sorgalla.com/jcarousel/ * * Copyright (c) 2006 Jan Sorgalla (http://sorgalla.com) * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses. * * Built on top of the jQuery library * http://jquery.com * * Inspired by the "Carousel Component" by Bill Scott * http://billwscott.com/carousel/ */ (function($) { /** * Creates a carousel for all matched elements. * * @example $("#mycarousel").jcarousel(); * @before * @result * *
*
*
*
    *
  • First item
  • *
  • Second item
  • *
*
*
*
*
*
* * @method jcarousel * @return jQuery * @param o {Hash|String} A set of key/value pairs to set as configuration properties or a method name to call on a formerly created instance. */ $.fn.jcarousel = function(o) { if (typeof o == 'string') { var instance = $(this).data('jcarousel'), args = Array.prototype.slice.call(arguments, 1); return instance[o].apply(instance, args); } else return this.each(function() { $(this).data('jcarousel', new $jc(this, o)); }); }; // Default configuration properties. var defaults = { vertical: false, rtl: false, start: 1, offset: 1, size: null, scroll: 3, visible: null, animation: 'normal', easing: 'swing', auto: 0, wrap: null, initCallback: null, reloadCallback: null, itemLoadCallback: null, itemFirstInCallback: null, itemFirstOutCallback: null, itemLastInCallback: null, itemLastOutCallback: null, itemVisibleInCallback: null, itemVisibleOutCallback: null, buttonNextHTML: '
', buttonPrevHTML: '
', buttonNextEvent: 'click', buttonPrevEvent: 'click', buttonNextCallback: null, buttonPrevCallback: null, itemFallbackDimension: null }, windowLoaded = false; $(window).bind('load.jcarousel', function() { windowLoaded = true; }) /** * The jCarousel object. * * @constructor * @class jcarousel * @param e {HTMLElement} The element to create the carousel for. * @param o {Object} A set of key/value pairs to set as configuration properties. * @cat Plugins/jCarousel */ $.jcarousel = function(e, o) { this.options = $.extend({}, defaults, o || {}); this.locked = false; this.container = null; this.clip = null; this.list = null; this.buttonNext = null; this.buttonPrev = null; // Only set if not explicitly passed as option if (!o || o.rtl === undefined) this.options.rtl = ($(e).attr('dir') || $('html').attr('dir') || '').toLowerCase() == 'rtl'; this.wh = !this.options.vertical ? 'width' : 'height'; this.lt = !this.options.vertical ? (this.options.rtl ? 'right' : 'left') : 'top'; // Extract skin class var skin = '', split = e.className.split(' '); for (var i = 0; i < split.length; i++) { if (split[i].indexOf('jcarousel-skin') != -1) { $(e).removeClass(split[i]); skin = split[i]; break; } } if (e.nodeName.toUpperCase() == 'UL' || e.nodeName.toUpperCase() == 'OL') { this.list = $(e); this.container = this.list.parent(); if (this.container.hasClass('jcarousel-clip')) { if (!this.container.parent().hasClass('jcarousel-container')) this.container = this.container.wrap('
'); this.container = this.container.parent(); } else if (!this.container.hasClass('jcarousel-container')) this.container = this.list.wrap('
').parent(); } else { this.container = $(e); this.list = this.container.find('ul,ol').eq(0); } if (skin != '' && this.container.parent()[0].className.indexOf('jcarousel-skin') == -1) this.container.wrap('
'); this.clip = this.list.parent(); if (!this.clip.length || !this.clip.hasClass('jcarousel-clip')) this.clip = this.list.wrap('
').parent(); this.buttonNext = $('.jcarousel-next', this.container); if (this.buttonNext.size() == 0 && this.options.buttonNextHTML != null) this.buttonNext = this.clip.after(this.options.buttonNextHTML).next(); this.buttonNext.addClass(this.className('jcarousel-next')); this.buttonPrev = $('.jcarousel-prev', this.container); if (this.buttonPrev.size() == 0 && this.options.buttonPrevHTML != null) this.buttonPrev = this.clip.after(this.options.buttonPrevHTML).next(); this.buttonPrev.addClass(this.className('jcarousel-prev')); this.clip.addClass(this.className('jcarousel-clip')).css({ overflow: 'hidden', position: 'relative' }); this.list.addClass(this.className('jcarousel-list')).css({ overflow: 'hidden', position: 'relative', top: 0, margin: 0, padding: 0 }).css((this.options.rtl ? 'right' : 'left'), 0); this.container.addClass(this.className('jcarousel-container')).css({ position: 'relative' }); if (!this.options.vertical && this.options.rtl) this.container.addClass('jcarousel-direction-rtl').attr('dir', 'rtl'); var di = this.options.visible != null ? Math.ceil(this.clipping() / this.options.visible) : null; var li = this.list.children('li'); var self = this; if (li.size() > 0) { var wh = 0, i = this.options.offset; li.each(function() { self.format(this, i++); wh += self.dimension(this, di); }); this.list.css(this.wh, (wh + 100) + 'px'); // Only set if not explicitly passed as option if (!o || o.size === undefined) this.options.size = li.size(); } // For whatever reason, .show() does not work in Safari... this.container.css('display', 'block'); this.buttonNext.css('display', 'block'); this.buttonPrev.css('display', 'block'); this.funcNext = function() { self.next(); }; this.funcPrev = function() { self.prev(); }; this.funcResize = function() { self.reload(); }; if (this.options.initCallback != null) this.options.initCallback(this, 'init'); this.setup(); }; // Create shortcut for internal use var $jc = $.jcarousel; $jc.fn = $jc.prototype = { jcarousel: '0.2.5' }; $jc.fn.extend = $jc.extend = $.extend; $jc.fn.extend({ /** * Setups the carousel. * * @method setup * @return undefined */ setup: function() { this.first = null; this.last = null; this.prevFirst = null; this.prevLast = null; this.animating = false; this.timer = null; this.tail = null; this.inTail = false; if (this.locked) return; this.list.css(this.lt, this.pos(this.options.offset) + 'px'); var p = this.pos(this.options.start); this.prevFirst = this.prevLast = null; this.animate(p, false); $(window).unbind('resize.jcarousel', this.funcResize).bind('resize.jcarousel', this.funcResize); }, /** * Clears the list and resets the carousel. * * @method reset * @return undefined */ reset: function() { this.list.empty(); this.list.css(this.lt, '0px'); this.list.css(this.wh, '10px'); if (this.options.initCallback != null) this.options.initCallback(this, 'reset'); this.setup(); }, /** * Reloads the carousel and adjusts positions. * * @method reload * @return undefined */ reload: function() { if (this.tail != null && this.inTail) this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) + this.tail); this.tail = null; this.inTail = false; if (this.options.reloadCallback != null) this.options.reloadCallback(this); if (this.options.visible != null) { var self = this; var di = Math.ceil(this.clipping() / this.options.visible), wh = 0, lt = 0; this.list.children('li').each(function(i) { wh += self.dimension(this, di); if (i + 1 < self.first) lt = wh; }); this.list.css(this.wh, wh + 'px'); this.list.css(this.lt, -lt + 'px'); } this.scroll(this.first, false); }, /** * Locks the carousel. * * @method lock * @return undefined */ lock: function() { this.locked = true; this.buttons(); }, /** * Unlocks the carousel. * * @method unlock * @return undefined */ unlock: function() { this.locked = false; this.buttons(); }, /** * Sets the size of the carousel. * * @method size * @return undefined * @param s {Number} The size of the carousel. */ size: function(s) { if (s != undefined) { this.options.size = s; if (!this.locked) this.buttons(); } return this.options.size; }, /** * Checks whether a list element exists for the given index (or index range). * * @method get * @return bool * @param i {Number} The index of the (first) element. * @param i2 {Number} The index of the last element. */ has: function(i, i2) { if (i2 == undefined || !i2) i2 = i; if (this.options.size !== null && i2 > this.options.size) i2 = this.options.size; for (var j = i; j <= i2; j++) { var e = this.get(j); if (!e.length || e.hasClass('jcarousel-item-placeholder')) return false; } return true; }, /** * Returns a jQuery object with list element for the given index. * * @method get * @return jQuery * @param i {Number} The index of the element. */ get: function(i) { return $('.jcarousel-item-' + i, this.list); }, /** * Adds an element for the given index to the list. * If the element already exists, it updates the inner html. * Returns the created element as jQuery object. * * @method add * @return jQuery * @param i {Number} The index of the element. * @param s {String} The innerHTML of the element. */ add: function(i, s) { var e = this.get(i), old = 0, n = $(s); if (e.length == 0) { var c, e = this.create(i), j = $jc.intval(i); while (c = this.get(--j)) { if (j <= 0 || c.length) { j <= 0 ? this.list.prepend(e) : c.after(e); break; } } } else old = this.dimension(e); if (n.get(0).nodeName.toUpperCase() == 'LI') { e.replaceWith(n); e = n; } else e.empty().append(s); this.format(e.removeClass(this.className('jcarousel-item-placeholder')), i); var di = this.options.visible != null ? Math.ceil(this.clipping() / this.options.visible) : null; var wh = this.dimension(e, di) - old; if (i > 0 && i < this.first) this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) - wh + 'px'); this.list.css(this.wh, $jc.intval(this.list.css(this.wh)) + wh + 'px'); return e; }, /** * Removes an element for the given index from the list. * * @method remove * @return undefined * @param i {Number} The index of the element. */ remove: function(i) { var e = this.get(i); // Check if item exists and is not currently visible if (!e.length || (i >= this.first && i <= this.last)) return; var d = this.dimension(e); if (i < this.first) this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) + d + 'px'); e.remove(); this.list.css(this.wh, $jc.intval(this.list.css(this.wh)) - d + 'px'); }, /** * Moves the carousel forwards. * * @method next * @return undefined */ next: function() { this.stopAuto(); if (this.tail != null && !this.inTail) this.scrollTail(false); else this.scroll(((this.options.wrap == 'both' || this.options.wrap == 'last') && this.options.size != null && this.last == this.options.size) ? 1 : this.first + this.options.scroll); }, /** * Moves the carousel backwards. * * @method prev * @return undefined */ prev: function() { this.stopAuto(); if (this.tail != null && this.inTail) this.scrollTail(true); else this.scroll(((this.options.wrap == 'both' || this.options.wrap == 'first') && this.options.size != null && this.first == 1) ? this.options.size : this.first - this.options.scroll); }, /** * Scrolls the tail of the carousel. * * @method scrollTail * @return undefined * @param b {Boolean} Whether scroll the tail back or forward. */ scrollTail: function(b) { if (this.locked || this.animating || !this.tail) return; var pos = $jc.intval(this.list.css(this.lt)); !b ? pos -= this.tail : pos += this.tail; this.inTail = !b; // Save for callbacks this.prevFirst = this.first; this.prevLast = this.last; this.animate(pos); }, /** * Scrolls the carousel to a certain position. * * @method scroll * @return undefined * @param i {Number} The index of the element to scoll to. * @param a {Boolean} Flag indicating whether to perform animation. */ scroll: function(i, a) { if (this.locked || this.animating) return; this.animate(this.pos(i), a); }, /** * Prepares the carousel and return the position for a certian index. * * @method pos * @return {Number} * @param i {Number} The index of the element to scoll to. */ pos: function(i) { var pos = $jc.intval(this.list.css(this.lt)); if (this.locked || this.animating) return pos; if (this.options.wrap != 'circular') i = i < 1 ? 1 : (this.options.size && i > this.options.size ? this.options.size : i); var back = this.first > i; // Create placeholders, new list width/height // and new list position var f = this.options.wrap != 'circular' && this.first <= 1 ? 1 : this.first; var c = back ? this.get(f) : this.get(this.last); var j = back ? f : f - 1; var e = null, l = 0, p = false, d = 0, g; while (back ? --j >= i : ++j < i) { e = this.get(j); p = !e.length; if (e.length == 0) { e = this.create(j).addClass(this.className('jcarousel-item-placeholder')); c[back ? 'before' : 'after' ](e); if (this.first != null && this.options.wrap == 'circular' && this.options.size !== null && (j <= 0 || j > this.options.size)) { g = this.get(this.index(j)); if (g.length) e = this.add(j, g.clone(true)); } } c = e; d = this.dimension(e); if (p) l += d; if (this.first != null && (this.options.wrap == 'circular' || (j >= 1 && (this.options.size == null || j <= this.options.size)))) pos = back ? pos + d : pos - d; } // Calculate visible items var clipping = this.clipping(); var cache = []; var visible = 0, j = i, v = 0; var c = this.get(i - 1); while (++visible) { e = this.get(j); p = !e.length; if (e.length == 0) { e = this.create(j).addClass(this.className('jcarousel-item-placeholder')); // This should only happen on a next scroll c.length == 0 ? this.list.prepend(e) : c[back ? 'before' : 'after' ](e); if (this.first != null && this.options.wrap == 'circular' && this.options.size !== null && (j <= 0 || j > this.options.size)) { g = this.get(this.index(j)); if (g.length) e = this.add(j, g.clone(true)); } } c = e; var d = this.dimension(e); if (d == 0) { throw new Error('jCarousel: No width/height set for items. This will cause an infinite loop. Aborting...'); } if (this.options.wrap != 'circular' && this.options.size !== null && j > this.options.size) cache.push(e); else if (p) l += d; v += d; if (v >= clipping) break; j++; } // Remove out-of-range placeholders for (var x = 0; x < cache.length; x++) cache[x].remove(); // Resize list if (l > 0) { this.list.css(this.wh, this.dimension(this.list) + l + 'px'); if (back) { pos -= l; this.list.css(this.lt, $jc.intval(this.list.css(this.lt)) - l + 'px'); } } // Calculate first and last item var last = i + visible - 1; if (this.options.wrap != 'circular' && this.options.size && last > this.options.size) last = this.options.size; if (j > last) { visible = 0, j = last, v = 0; while (++visible) { var e = this.get(j--); if (!e.length) break; v += this.dimension(e); if (v >= clipping) break; } } var first = last - visible + 1; if (this.options.wrap != 'circular' && first < 1) first = 1; if (this.inTail && back) { pos += this.tail; this.inTail = false; } this.tail = null; if (this.options.wrap != 'circular' && last == this.options.size && (last - visible + 1) >= 1) { var m = $jc.margin(this.get(last), !this.options.vertical ? 'marginRight' : 'marginBottom'); if ((v - m) > clipping) this.tail = v - clipping - m; } // Adjust position while (i-- > first) pos += this.dimension(this.get(i)); // Save visible item range this.prevFirst = this.first; this.prevLast = this.last; this.first = first; this.last = last; return pos; }, /** * Animates the carousel to a certain position. * * @method animate * @return undefined * @param p {Number} Position to scroll to. * @param a {Boolean} Flag indicating whether to perform animation. */ animate: function(p, a) { if (this.locked || this.animating) return; this.animating = true; var self = this; var scrolled = function() { self.animating = false; if (p == 0) self.list.css(self.lt, 0); if (self.options.wrap == 'circular' || self.options.wrap == 'both' || self.options.wrap == 'last' || self.options.size == null || self.last < self.options.size) self.startAuto(); self.buttons(); self.notify('onAfterAnimation'); // This function removes items which are appended automatically for circulation. // This prevents the list from growing infinitely. if (self.options.wrap == 'circular' && self.options.size !== null) for (var i = self.prevFirst; i <= self.prevLast; i++) if (i !== null && !(i >= self.first && i <= self.last) && (i < 1 || i > self.options.size)) self.remove(i); }; this.notify('onBeforeAnimation'); // Animate if (!this.options.animation || a == false) { this.list.css(this.lt, p + 'px'); scrolled(); } else { var o = !this.options.vertical ? (this.options.rtl ? {'right': p} : {'left': p}) : {'top': p}; this.list.animate(o, this.options.animation, this.options.easing, scrolled); } }, /** * Starts autoscrolling. * * @method auto * @return undefined * @param s {Number} Seconds to periodically autoscroll the content. */ startAuto: function(s) { if (s != undefined) this.options.auto = s; if (this.options.auto == 0) return this.stopAuto(); if (this.timer != null) return; var self = this; this.timer = setTimeout(function() { self.next(); }, this.options.auto * 1000); }, /** * Stops autoscrolling. * * @method stopAuto * @return undefined */ stopAuto: function() { if (this.timer == null) return; clearTimeout(this.timer); this.timer = null; }, /** * Sets the states of the prev/next buttons. * * @method buttons * @return undefined */ buttons: function(n, p) { if (n == undefined || n == null) { var n = !this.locked && this.options.size !== 0 && ((this.options.wrap && this.options.wrap != 'first') || this.options.size == null || this.last < this.options.size); if (!this.locked && (!this.options.wrap || this.options.wrap == 'first') && this.options.size != null && this.last >= this.options.size) n = this.tail != null && !this.inTail; } if (p == undefined || p == null) { var p = !this.locked && this.options.size !== 0 && ((this.options.wrap && this.options.wrap != 'last') || this.first > 1); if (!this.locked && (!this.options.wrap || this.options.wrap == 'last') && this.options.size != null && this.first == 1) p = this.tail != null && this.inTail; } var self = this; this.buttonNext[n ? 'bind' : 'unbind'](this.options.buttonNextEvent + '.jcarousel', this.funcNext)[n ? 'removeClass' : 'addClass'](this.className('jcarousel-next-disabled')).attr('disabled', n ? false : true); this.buttonPrev[p ? 'bind' : 'unbind'](this.options.buttonPrevEvent + '.jcarousel', this.funcPrev)[p ? 'removeClass' : 'addClass'](this.className('jcarousel-prev-disabled')).attr('disabled', p ? false : true); if (this.options.buttonNextCallback != null && this.buttonNext.data('jcarouselstate') != n) { this.buttonNext.each(function() { self.options.buttonNextCallback(self, this, n); }).data('jcarouselstate', n); } if (this.options.buttonPrevCallback != null && (this.buttonPrev.data('jcarouselstate') != p)) { this.buttonPrev.each(function() { self.options.buttonPrevCallback(self, this, p); }).data('jcarouselstate', p); } }, /** * Notify callback of a specified event. * * @method notify * @return undefined * @param evt {String} The event name */ notify: function(evt) { var state = this.prevFirst == null ? 'init' : (this.prevFirst < this.first ? 'next' : 'prev'); // Load items this.callback('itemLoadCallback', evt, state); if (this.prevFirst !== this.first) { this.callback('itemFirstInCallback', evt, state, this.first); this.callback('itemFirstOutCallback', evt, state, this.prevFirst); } if (this.prevLast !== this.last) { this.callback('itemLastInCallback', evt, state, this.last); this.callback('itemLastOutCallback', evt, state, this.prevLast); } this.callback('itemVisibleInCallback', evt, state, this.first, this.last, this.prevFirst, this.prevLast); this.callback('itemVisibleOutCallback', evt, state, this.prevFirst, this.prevLast, this.first, this.last); }, callback: function(cb, evt, state, i1, i2, i3, i4) { if (this.options[cb] == undefined || (typeof this.options[cb] != 'object' && evt != 'onAfterAnimation')) return; var callback = typeof this.options[cb] == 'object' ? this.options[cb][evt] : this.options[cb]; if (!$.isFunction(callback)) return; var self = this; if (i1 === undefined) callback(self, state, evt); else if (i2 === undefined) this.get(i1).each(function() { callback(self, this, i1, state, evt); }); else { for (var i = i1; i <= i2; i++) if (i !== null && !(i >= i3 && i <= i4)) this.get(i).each(function() { callback(self, this, i, state, evt); }); } }, create: function(i) { return this.format('
  • ', i); }, format: function(e, i) { var e = $(e), split = e.get(0).className.split(' '); for (var j = 0; j < split.length; j++) { if (split[j].indexOf('jcarousel-') != -1) { e.removeClass(split[j]); } } e.addClass(this.className('jcarousel-item')).addClass(this.className('jcarousel-item-' + i)).css({ 'float': (this.options.rtl ? 'right' : 'left'), 'list-style': 'none' }).attr('jcarouselindex', i); return e; }, className: function(c) { return c + ' ' + c + (!this.options.vertical ? '-horizontal' : '-vertical'); }, dimension: function(e, d) { var el = e.jquery != undefined ? e[0] : e; var old = !this.options.vertical ? (el.offsetWidth || $jc.intval(this.options.itemFallbackDimension)) + $jc.margin(el, 'marginLeft') + $jc.margin(el, 'marginRight') : (el.offsetHeight || $jc.intval(this.options.itemFallbackDimension)) + $jc.margin(el, 'marginTop') + $jc.margin(el, 'marginBottom'); if (d == undefined || old == d) return old; var w = !this.options.vertical ? d - $jc.margin(el, 'marginLeft') - $jc.margin(el, 'marginRight') : d - $jc.margin(el, 'marginTop') - $jc.margin(el, 'marginBottom'); $(el).css(this.wh, w + 'px'); return this.dimension(el); }, clipping: function() { return !this.options.vertical ? this.clip[0].offsetWidth - $jc.intval(this.clip.css('borderLeftWidth')) - $jc.intval(this.clip.css('borderRightWidth')) : this.clip[0].offsetHeight - $jc.intval(this.clip.css('borderTopWidth')) - $jc.intval(this.clip.css('borderBottomWidth')); }, index: function(i, s) { if (s == undefined) s = this.options.size; return Math.round((((i-1) / s) - Math.floor((i-1) / s)) * s) + 1; } }); $jc.extend({ /** * Gets/Sets the global default configuration properties. * * @method defaults * @return {Object} * @param d {Object} A set of key/value pairs to set as configuration properties. */ defaults: function(d) { return $.extend(defaults, d || {}); }, margin: function(e, p) { if (!e) return 0; var el = e.jquery != undefined ? e[0] : e; return $jc.intval($.css(el, p)); }, intval: function(v) { v = parseInt(v); return isNaN(v) ? 0 : v; } }); })(jQuery);