mirror of
https://github.com/jquery/jquery-ui.git
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396 lines
10 KiB
JavaScript
396 lines
10 KiB
JavaScript
/*
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* jQuery UI Accordion @VERSION
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*
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* Copyright (c) 2007, 2008 Jörn Zaefferer
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* Dual licensed under the MIT (MIT-LICENSE.txt)
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* and GPL (GPL-LICENSE.txt) licenses.
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*
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* http://docs.jquery.com/UI/Accordion
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*
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* Depends:
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* ui.core.js
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*/
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(function($) {
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$.widget("ui.accordion", {
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_init: function() {
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var options = this.options;
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if ( options.navigation ) {
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var current = this.element.find("a").filter(options.navigationFilter);
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if ( current.length ) {
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if ( current.filter(options.header).length ) {
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options.active = current;
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} else {
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options.active = current.parent().parent().prev();
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current.addClass("current");
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}
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}
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}
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// calculate active if not specified, using the first header
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options.headers = this.element.find(options.header);
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options.active = findActive(options.headers, options.active);
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// IE7-/Win - Extra vertical space in Lists fixed
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if ($.browser.msie) {
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this.element.find('a').css('zoom', '1');
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}
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if (!this.element.hasClass("ui-accordion")) {
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this.element.addClass("ui-accordion");
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$('<span class="ui-accordion-left"/>').insertBefore(options.headers);
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$('<span class="ui-accordion-right"/>').appendTo(options.headers);
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options.headers.addClass("ui-accordion-header");
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}
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var maxHeight;
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if ( options.fillSpace ) {
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maxHeight = this.element.parent().height();
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options.headers.each(function() {
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maxHeight -= $(this).outerHeight();
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});
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var maxPadding = 0;
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options.headers.next().each(function() {
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maxPadding = Math.max(maxPadding, $(this).innerHeight() - $(this).height());
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}).height(maxHeight - maxPadding);
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} else if ( options.autoHeight ) {
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maxHeight = 0;
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options.headers.next().each(function() {
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maxHeight = Math.max(maxHeight, $(this).outerHeight());
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}).height(maxHeight);
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}
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this.element.attr('role','tablist');
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var self=this;
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options.headers
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.attr('role','tab')
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.bind('keydown', function(event) { return self._keydown(event); })
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.next()
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.attr('role','tabpanel');
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options.headers
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.not(options.active || "")
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.attr('aria-expanded','false')
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.attr("tabIndex", "-1")
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.next()
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.hide();
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// make sure at least one header is in the tab order
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if (!options.active.length) {
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options.headers.eq(0).attr('tabIndex','0');
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} else {
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options.active
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.attr('aria-expanded','true')
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.attr("tabIndex", "0")
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.parent().andSelf().addClass(options.selectedClass);
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}
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// only need links in taborder for Safari
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if (!$.browser.safari)
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options.headers.find('a').attr('tabIndex','-1');
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if (options.event) {
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this.element.bind((options.event) + ".accordion", clickHandler);
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}
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},
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_keydown: function(event) {
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if (this.options.disabled || event.altKey || event.ctrlKey)
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return;
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var keyCode = $.keyCode;
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var length = this.options.headers.length;
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var currentIndex = this.options.headers.index(event.target);
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var toFocus = false;
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switch(event.keyCode) {
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case keyCode.RIGHT:
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case keyCode.DOWN:
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toFocus = this.options.headers[(currentIndex + 1) % length];
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break;
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case keyCode.LEFT:
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case keyCode.UP:
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toFocus = this.options.headers[(currentIndex - 1 + length) % length];
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break;
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case keyCode.SPACE:
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case keyCode.ENTER:
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return clickHandler.call(this.element[0], { target: event.target });
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}
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if (toFocus) {
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$(event.target).attr('tabIndex','-1');
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$(toFocus).attr('tabIndex','0');
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toFocus.focus();
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return false;
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}
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return true;
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},
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activate: function(index) {
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// call clickHandler with custom event
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clickHandler.call(this.element[0], {
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target: findActive( this.options.headers, index )[0]
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});
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},
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destroy: function() {
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this.options.headers.parent().andSelf().removeClass(this.options.selectedClass);
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this.options.headers.prev(".ui-accordion-left").remove();
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this.options.headers.children(".ui-accordion-right").remove();
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this.options.headers.next().css("display", "");
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if ( this.options.fillSpace || this.options.autoHeight ) {
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this.options.headers.next().css("height", "");
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}
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$.removeData(this.element[0], "accordion");
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this.element.removeClass("ui-accordion").unbind(".accordion");
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}
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});
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function scopeCallback(callback, scope) {
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return function() {
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return callback.apply(scope, arguments);
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};
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};
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function completed(cancel) {
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// if removed while animated data can be empty
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if (!$.data(this, "accordion")) {
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return;
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}
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var instance = $.data(this, "accordion");
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var options = instance.options;
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options.running = cancel ? 0 : --options.running;
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if ( options.running ) {
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return;
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}
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if ( options.clearStyle ) {
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options.toShow.add(options.toHide).css({
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height: "",
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overflow: ""
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});
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}
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instance._trigger('change', null, options.data);
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}
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function toggle(toShow, toHide, data, clickedActive, down) {
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var options = $.data(this, "accordion").options;
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options.toShow = toShow;
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options.toHide = toHide;
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options.data = data;
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var complete = scopeCallback(completed, this);
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$.data(this, "accordion")._trigger("changestart", null, options.data);
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// count elements to animate
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options.running = toHide.size() === 0 ? toShow.size() : toHide.size();
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if ( options.animated ) {
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var animOptions = {};
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if ( !options.alwaysOpen && clickedActive ) {
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animOptions = {
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toShow: $([]),
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toHide: toHide,
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complete: complete,
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down: down,
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autoHeight: options.autoHeight
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};
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} else {
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animOptions = {
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toShow: toShow,
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toHide: toHide,
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complete: complete,
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down: down,
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autoHeight: options.autoHeight
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};
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}
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if (!options.proxied) {
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options.proxied = options.animated;
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}
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if (!options.proxiedDuration) {
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options.proxiedDuration = options.duration;
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}
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options.animated = $.isFunction(options.proxied) ?
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options.proxied(animOptions) : options.proxied;
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options.duration = $.isFunction(options.proxiedDuration) ?
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options.proxiedDuration(animOptions) : options.proxiedDuration;
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var animations = $.ui.accordion.animations,
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duration = options.duration,
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easing = options.animated;
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if (!animations[easing]) {
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animations[easing] = function(options) {
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this.slide(options, {
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easing: easing,
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duration: duration || 700
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});
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};
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}
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animations[easing](animOptions);
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} else {
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if ( !options.alwaysOpen && clickedActive ) {
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toShow.toggle();
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} else {
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toHide.hide();
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toShow.show();
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}
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complete(true);
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}
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toHide.prev().attr('aria-expanded','false').attr("tabIndex", "-1");
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toShow.prev().attr('aria-expanded','true').attr("tabIndex", "0").focus();;
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}
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function clickHandler(event) {
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var options = $.data(this, "accordion").options;
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if (options.disabled) {
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return false;
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}
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// called only when using activate(false) to close all parts programmatically
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if ( !event.target && !options.alwaysOpen ) {
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options.active.parent().andSelf().toggleClass(options.selectedClass);
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var toHide = options.active.next(),
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data = {
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options: options,
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newHeader: $([]),
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oldHeader: options.active,
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newContent: $([]),
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oldContent: toHide
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},
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toShow = (options.active = $([]));
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toggle.call(this, toShow, toHide, data );
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return false;
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}
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// get the click target
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var clicked = $(event.target);
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// due to the event delegation model, we have to check if one
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// of the parent elements is our actual header, and find that
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// otherwise stick with the initial target
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clicked = $( clicked.parents(options.header)[0] || clicked );
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var clickedActive = clicked[0] == options.active[0];
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// if animations are still active, or the active header is the target, ignore click
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if (options.running || (options.alwaysOpen && clickedActive)) {
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return false;
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}
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if (!clicked.is(options.header)) {
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return;
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}
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// switch classes
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options.active.parent().andSelf().toggleClass(options.selectedClass);
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if ( !clickedActive ) {
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clicked.parent().andSelf().addClass(options.selectedClass);
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}
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// find elements to show and hide
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var toShow = clicked.next(),
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toHide = options.active.next(),
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data = {
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options: options,
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newHeader: clickedActive && !options.alwaysOpen ? $([]) : clicked,
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oldHeader: options.active,
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newContent: clickedActive && !options.alwaysOpen ? $([]) : toShow,
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oldContent: toHide
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},
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down = options.headers.index( options.active[0] ) > options.headers.index( clicked[0] );
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options.active = clickedActive ? $([]) : clicked;
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toggle.call(this, toShow, toHide, data, clickedActive, down );
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return false;
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};
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function findActive(headers, selector) {
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return selector
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? typeof selector == "number"
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? headers.filter(":eq(" + selector + ")")
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: headers.not(headers.not(selector))
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: selector === false
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? $([])
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: headers.filter(":eq(0)");
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}
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$.extend($.ui.accordion, {
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version: "@VERSION",
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defaults: {
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selectedClass: "selected",
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alwaysOpen: true,
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animated: 'slide',
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event: "click",
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header: "a",
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autoHeight: true,
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running: 0,
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navigationFilter: function() {
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return this.href.toLowerCase() == location.href.toLowerCase();
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}
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},
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animations: {
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slide: function(options, additions) {
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options = $.extend({
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easing: "swing",
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duration: 300
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}, options, additions);
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if ( !options.toHide.size() ) {
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options.toShow.animate({height: "show"}, options);
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return;
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}
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var hideHeight = options.toHide.height(),
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showHeight = options.toShow.height(),
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difference = showHeight / hideHeight,
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padding = options.toShow.outerHeight() - options.toShow.height(),
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margin = options.toShow.css('marginBottom'),
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overflow = options.toShow.css('overflow')
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tmargin = options.toShow.css('marginTop');
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options.toShow.css({ height: 0, overflow: 'hidden', marginTop: 0, marginBottom: -padding }).show();
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options.toHide.filter(":hidden").each(options.complete).end().filter(":visible").animate({height:"hide"},{
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step: function(now) {
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var current = (hideHeight - now) * difference;
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if ($.browser.msie || $.browser.opera) {
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current = Math.ceil(current);
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}
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options.toShow.height( current );
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},
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duration: options.duration,
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easing: options.easing,
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complete: function() {
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if ( !options.autoHeight ) {
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options.toShow.css("height", "auto");
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}
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options.toShow.css({marginTop: tmargin, marginBottom: margin, overflow: overflow});
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options.complete();
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}
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});
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},
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bounceslide: function(options) {
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this.slide(options, {
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easing: options.down ? "easeOutBounce" : "swing",
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duration: options.down ? 1000 : 200
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});
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},
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easeslide: function(options) {
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this.slide(options, {
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easing: "easeinout",
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duration: 700
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});
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}
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}
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});
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})(jQuery);
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