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// $Id: tabs.js,v 1.3 2008/03/30 15:58:26 merlinofchaos Exp $
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/**
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* @file tabs.js
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* jQuery UI Tabs (Tabs 3)
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*
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* This is nothing more than the pure jquery UI tabs implementation.
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*/
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(function($) {
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// if the UI scope is not availalable, add it
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$.ui = $.ui || {};
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$.fn.tabs = function(initial, options) {
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if (initial && initial.constructor == Object) { // shift arguments
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options = initial;
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initial = null;
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}
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options = options || {};
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// first get initial tab from options
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initial = initial && initial.constructor == Number && --initial || 0;
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return this.each(function() {
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new $.ui.tabs(this, $.extend(options, { initial: initial }));
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});
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};
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// chainable tabs methods
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$.each(['add', 'remove', 'enable', 'disable', 'click', 'load'], function(i, method) {
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$.fn[method + 'Tab'] = function() {
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var args = arguments;
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return this.each(function() {
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var instance = $.ui.tabs.instances[this.UI_TABS_UUID];
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instance[method].apply(instance, args);
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});
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};
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});
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$.fn.selectedTab = function(returnElement) {
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var selected;
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if (returnElement) {
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} else {
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}
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return selected;
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};
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$.ui.tabs = function(el, options) {
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this.source = el;
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this.options = $.extend({
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// basic setup
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initial: 0,
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event: 'click',
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disabled: [],
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// TODO bookmarkable: $.ajaxHistory ? true : false,
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unselected: false,
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toggle: options.unselected ? true : false,
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// Ajax
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spinner: 'Loading…',
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cache: false,
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hashPrefix: 'tab-',
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// animations
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/*fxFade: null,
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fxSlide: null,
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fxShow: null,
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fxHide: null,*/
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fxSpeed: 'normal',
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/*fxShowSpeed: null,
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fxHideSpeed: null,*/
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// callbacks
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add: function() {},
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remove: function() {},
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enable: function() {},
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disable: function() {},
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click: function() {},
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hide: function() {},
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show: function() {},
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load: function() {},
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// CSS classes
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navClass: 'ui-tabs-nav',
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selectedClass: 'ui-tabs-selected',
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disabledClass: 'ui-tabs-disabled',
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containerClass: 'ui-tabs-container',
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hideClass: 'ui-tabs-hide',
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loadingClass: 'ui-tabs-loading'
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}, options);
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this.tabify(true);
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// save instance for later
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var uuid = 'instance-' + $.ui.tabs.prototype.count++;
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$.ui.tabs.instances[uuid] = this;
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this.source['UI_TABS_UUID'] = uuid;
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};
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// static
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$.ui.tabs.instances = {};
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$.extend($.ui.tabs.prototype, {
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animating: false,
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count: 0,
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tabify: function(init) {
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this.$tabs = $('a:first-child', this.source);
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this.$containers = $([]);
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var self = this, o = this.options;
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this.$tabs.each(function(i, a) {
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// inline tab
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if (a.hash && a.hash.replace('#', '')) { // safari 2 reports '#' for an empty hash
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self.$containers = self.$containers.add(a.hash);
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}
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// remote tab
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else {
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var id = a.title && a.title.replace(/\s/g, '_') || o.hashPrefix + (self.count + 1) + '-' + (i + 1), url = a.href;
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a.href = '#' + id;
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a.url = url;
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self.$containers = self.$containers.add(
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$('#' + id)[0] || $('<div id="' + id + '" class="' + o.containerClass + '"></div>')
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.insertAfter( self.$containers[i - 1] || self.source )
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);
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}
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});
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if (init) {
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// Try to retrieve initial tab from fragment identifier in url if present,
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// otherwise try to find selected class attribute on <li>.
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this.$tabs.each(function(i, a) {
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if (location.hash) {
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if (a.hash == location.hash) {
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o.initial = i;
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// prevent page scroll to fragment
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//if (($.browser.msie || $.browser.opera) && !o.remote) {
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if ($.browser.msie || $.browser.opera) {
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var $toShow = $(location.hash), toShowId = $toShow.attr('id');
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$toShow.attr('id', '');
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setTimeout(function() {
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$toShow.attr('id', toShowId); // restore id
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}, 500);
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}
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scrollTo(0, 0);
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return false; // break
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}
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} else if ( $(a).parents('li:eq(0)').is('li.' + o.selectedClass) ) {
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o.initial = i;
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return false; // break
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}
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});
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// attach necessary classes for styling if not present
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$(this.source).is('.' + o.navClass) || $(this.source).addClass(o.navClass);
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this.$containers.each(function() {
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var $this = $(this);
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$this.is('.' + o.containerClass) || $this.addClass(o.containerClass);
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});
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// highlight tab accordingly
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var $lis = $('li', this.source);
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this.$containers.addClass(o.hideClass);
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$lis.removeClass(o.selectedClass);
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if (!o.unselected) {
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this.$containers.slice(o.initial, o.initial + 1).show();
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$lis.slice(o.initial, o.initial + 1).addClass(o.selectedClass);
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}
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// trigger load of initial tab is remote tab
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if (this.$tabs[o.initial].url) {
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this.load(o.initial + 1, this.$tabs[o.initial].url);
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if (o.cache) {
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this.$tabs[o.initial].url = null; // if loaded once do not load them again
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}
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}
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// disabled tabs
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for (var i = 0, position; position = o.disabled[i]; i++) {
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this.disable(position);
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}
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}
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// setup animations
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var showAnim = {}, hideAnim = {}, showSpeed = o.fxShowSpeed || o.fxSpeed,
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hideSpeed = o.fxHideSpeed || o.fxSpeed;
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if (o.fxSlide || o.fxFade) {
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if (o.fxSlide) {
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showAnim['height'] = 'show';
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hideAnim['height'] = 'hide';
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}
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if (o.fxFade) {
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showAnim['opacity'] = 'show';
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hideAnim['opacity'] = 'hide';
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}
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} else {
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if (o.fxShow) {
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showAnim = o.fxShow;
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} else { // use some kind of animation to prevent browser scrolling to the tab
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showAnim['min-width'] = 0; // avoid opacity, causes flicker in Firefox
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showSpeed = 1; // as little as 1 is sufficient
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}
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if (o.fxHide) {
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hideAnim = o.fxHide;
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} else { // use some kind of animation to prevent browser scrolling to the tab
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hideAnim['min-width'] = 0; // avoid opacity, causes flicker in Firefox
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hideSpeed = 1; // as little as 1 is sufficient
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}
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}
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// callbacks
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var click = o.click, hide = o.hide, show = o.show;
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// reset some styles to maintain print style sheets etc.
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var resetCSS = { display: '', overflow: '', height: '' };
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if (!$.browser.msie) { // not in IE to prevent ClearType font issue
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resetCSS['opacity'] = '';
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}
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// hide a tab, animation prevents browser scrolling to fragment
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function hideTab(clicked, $hide, $show) {
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$hide.animate(hideAnim, hideSpeed, function() { //
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$hide.addClass(o.hideClass).css(resetCSS); // maintain flexible height and accessibility in print etc.
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hide(clicked, $show, $hide[0]);
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if ($show) {
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showTab(clicked, $hide, $show);
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}
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});
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}
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// show a tab, animation prevents browser scrolling to fragment
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function showTab(clicked, $hide, $show) {
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// show next tab
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if (!(o.fxSlide || o.fxFade || o.fxShow)) {
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$show.css('display', 'block'); // prevent occasionally occuring flicker in Firefox cause by gap between showing and hiding the tab containers
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}
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$show.animate(showAnim, showSpeed, function() {
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$show.removeClass(o.hideClass).css(resetCSS); // maintain flexible height and accessibility in print etc.
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if ($.browser.msie) {
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$hide[0].style.filter = '';
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$show[0].style.filter = '';
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}
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show(clicked, $show[0], $hide[0]);
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self.animating = false;
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});
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}
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// switch a tab
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function switchTab(clicked, $hide, $show) {
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/*if (o.bookmarkable && trueClick) { // add to history only if true click occured, not a triggered click
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$.ajaxHistory.update(clicked.hash);
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}*/
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$(clicked).parents('li:eq(0)').addClass(o.selectedClass)
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.siblings().removeClass(o.selectedClass);
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hideTab(clicked, $hide, $show);
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}
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// tab click handler
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function tabClick(e) {
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//var trueClick = e.clientX; // add to history only if true click occured, not a triggered click
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var $li = $(this).parents('li:eq(0)'), $hide = self.$containers.filter(':visible'), $show = $(this.hash);
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// if tab may be closed
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if (o.toggle && !$li.is('.' + o.disabledClass) && !self.animating) {
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if ($li.is('.' + o.selectedClass)) {
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$li.removeClass(o.selectedClass);
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hideTab(this, $hide);
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this.blur();
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return false;
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} else if (!$hide.length) {
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$li.addClass(o.selectedClass);
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showTab(this, $hide, $show);
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this.blur();
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return false;
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}
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}
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// If tab is already selected or disabled, animation is still running or click callback
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// returns false stop here.
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// Check if click handler returns false last so that it is not executed for a disabled tab!
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if ($li.is('.' + o.selectedClass + ', .' + o.disabledClass)
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|| self.animating || click(this, $show[0], $hide[0]) === false) {
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this.blur();
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return false;
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}
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self.animating = true;
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// show new tab
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if ($show.length) {
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// prevent scrollbar scrolling to 0 and than back in IE7, happens only if bookmarking/history is enabled
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/*if ($.browser.msie && o.bookmarkable) {
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var showId = this.hash.replace('#', '');
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$show.attr('id', '');
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setTimeout(function() {
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$show.attr('id', showId); // restore id
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}, 0);
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}*/
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if (this.url) { // remote tab
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var a = this;
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self.load(self.$tabs.index(this) + 1, this.url, function() {
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switchTab(a, $hide, $show);
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});
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if (o.cache) {
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this.url = null; // if loaded once do not load them again
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}
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} else {
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switchTab(this, $hide, $show);
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}
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// Set scrollbar to saved position - need to use timeout with 0 to prevent browser scroll to target of hash
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/*var scrollX = window.pageXOffset || document.documentElement && document.documentElement.scrollLeft || document.body.scrollLeft || 0;
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var scrollY = window.pageYOffset || document.documentElement && document.documentElement.scrollTop || document.body.scrollTop || 0;
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setTimeout(function() {
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scrollTo(scrollX, scrollY);
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}, 0);*/
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} else {
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throw Drupal.t('jQuery UI Tabs: Mismatching fragment identifier.');
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}
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this.blur(); // prevent IE from keeping other link focussed when using the back button
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//return o.bookmarkable && !!trueClick; // convert trueClick == undefined to Boolean required in IE
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return false;
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}
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// attach click event, avoid duplicates from former tabifying
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this.$tabs.unbind(o.event, tabClick).bind(o.event, tabClick);
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},
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add: function(url, text, position) {
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if (url && text) {
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var o = this.options;
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position = position || this.$tabs.length; // append by default
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if (position >= this.$tabs.length) {
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var method = 'insertAfter';
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position = this.$tabs.length;
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} else {
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var method = 'insertBefore';
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}
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if (url.indexOf('#') == 0) { // ajax container is created by tabify automatically
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var $container = $(url);
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// try to find an existing element before creating a new one
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($container.length && $container || $('<div id="' + url.replace('#', '') + '" class="' + o.containerClass + ' ' + o.hideClass + '"></div>'))
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[method](this.$containers[position - 1]);
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}
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$('<li><a href="' + url + '"><span>' + text + '</span></a></li>')
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[method](this.$tabs.slice(position - 1, position).parents('li:eq(0)'));
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this.tabify();
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o.add(this.$tabs[position - 1], this.$containers[position - 1]); // callback
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} else {
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throw Drupal.t('jQuery UI Tabs: Not enough arguments to add tab.');
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}
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},
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remove: function(position) {
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if (position && position.constructor == Number) {
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this.$tabs.slice(position - 1, position).parents('li:eq(0)').remove();
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this.$containers.slice(position - 1, position).remove();
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this.tabify();
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}
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this.options.remove(); // callback
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},
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enable: function(position) {
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var $li = this.$tabs.slice(position - 1, position).parents('li:eq(0)'), o = this.options;
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$li.removeClass(o.disabledClass);
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if ($.browser.safari) { // fix disappearing tab after enabling in Safari... TODO check Safari 3
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$li.animate({ opacity: 1 }, 1, function() {
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$li.css({ opacity: '' });
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});
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}
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o.enable(this.$tabs[position - 1], this.$containers[position - 1]); // callback
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},
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disable: function(position) {
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var $li = this.$tabs.slice(position - 1, position).parents('li:eq(0)'), o = this.options;
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if ($.browser.safari) { // fix opacity of tab after disabling in Safari... TODO check Safari 3
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$li.animate({ opacity: 0 }, 1, function() {
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$li.css({ opacity: '' });
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});
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}
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$li.addClass(this.options.disabledClass);
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o.disable(this.$tabs[position - 1], this.$containers[position - 1]); // callback
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},
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click: function(position) {
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this.$tabs.slice(position - 1, position).trigger('click');
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},
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load: function(position, url, callback) {
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var self = this,
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o = this.options,
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$a = this.$tabs.slice(position - 1, position).addClass(o.loadingClass),
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$span = $('span', $a),
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text = $span.html();
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// shift arguments
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if (url && url.constructor == Function) {
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callback = url;
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}
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// set new URL
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if (url) {
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$a[0].url = url;
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}
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// load
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if (o.spinner) {
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$span.html('<em>' + o.spinner + '</em>');
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}
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setTimeout(function() { // timeout is again required in IE, "wait" for id being restored
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$($a[0].hash).load(url, function() {
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if (o.spinner) {
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$span.html(text);
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}
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$a.removeClass(o.loadingClass);
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// This callback is needed because the switch has to take place after loading
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// has completed.
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if (callback && callback.constructor == Function) {
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callback();
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}
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o.load(self.$tabs[position - 1], self.$containers[position - 1]); // callback
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});
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}, 0);
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}
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});
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})(jQuery);
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