diff options
Diffstat (limited to 'js/src/tab.js')
| -rw-r--r-- | js/src/tab.js | 281 |
1 files changed, 197 insertions, 84 deletions
diff --git a/js/src/tab.js b/js/src/tab.js index f9969fb7a4..135e929dda 100644 --- a/js/src/tab.js +++ b/js/src/tab.js @@ -5,7 +5,7 @@ * -------------------------------------------------------------------------- */ -import { defineJQueryPlugin, getElementFromSelector, isDisabled, reflow } from './util/index' +import { defineJQueryPlugin, getElementFromSelector, getNextActiveElement, isDisabled } from './util/index' import EventHandler from './dom/event-handler' import SelectorEngine from './dom/selector-engine' import BaseComponent from './base-component' @@ -17,158 +17,264 @@ import BaseComponent from './base-component' const NAME = 'tab' const DATA_KEY = 'bs.tab' const EVENT_KEY = `.${DATA_KEY}` -const DATA_API_KEY = '.data-api' const EVENT_HIDE = `hide${EVENT_KEY}` const EVENT_HIDDEN = `hidden${EVENT_KEY}` const EVENT_SHOW = `show${EVENT_KEY}` const EVENT_SHOWN = `shown${EVENT_KEY}` -const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}` +const EVENT_CLICK_DATA_API = `click${EVENT_KEY}` +const EVENT_KEYDOWN = `keydown${EVENT_KEY}` +const EVENT_LOAD_DATA_API = `load${EVENT_KEY}` + +const ARROW_LEFT_KEY = 'ArrowLeft' +const ARROW_RIGHT_KEY = 'ArrowRight' +const ARROW_UP_KEY = 'ArrowUp' +const ARROW_DOWN_KEY = 'ArrowDown' -const CLASS_NAME_DROPDOWN_MENU = 'dropdown-menu' const CLASS_NAME_ACTIVE = 'active' const CLASS_NAME_FADE = 'fade' const CLASS_NAME_SHOW = 'show' +const CLASS_DROPDOWN = 'dropdown' -const SELECTOR_DROPDOWN = '.dropdown' -const SELECTOR_NAV_LIST_GROUP = '.nav, .list-group' -const SELECTOR_ACTIVE = '.active' -const SELECTOR_ACTIVE_UL = ':scope > li > .active' -const SELECTOR_DATA_TOGGLE = '[data-bs-toggle="tab"], [data-bs-toggle="pill"], [data-bs-toggle="list"]' const SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle' -const SELECTOR_DROPDOWN_ACTIVE_CHILD = ':scope > .dropdown-menu .active' +const SELECTOR_DROPDOWN_MENU = '.dropdown-menu' +const SELECTOR_DROPDOWN_ITEM = '.dropdown-item' +const NOT_SELECTOR_DROPDOWN_TOGGLE = ':not(.dropdown-toggle)' + +const SELECTOR_TAB_PANEL = '.list-group, .nav, [role="tablist"]' +const SELECTOR_OUTER = '.nav-item, .list-group-item' +const SELECTOR_INNER = `.nav-link${NOT_SELECTOR_DROPDOWN_TOGGLE}, .list-group-item${NOT_SELECTOR_DROPDOWN_TOGGLE}, [role="tab"]${NOT_SELECTOR_DROPDOWN_TOGGLE}` +const SELECTOR_DATA_TOGGLE = '[data-bs-toggle="tab"], [data-bs-toggle="pill"], [data-bs-toggle="list"]' // todo:v6: could be only `tab` +const SELECTOR_INNER_ELEM = `${SELECTOR_INNER}, ${SELECTOR_DATA_TOGGLE}` + +const SELECTOR_DATA_TOGGLE_ACTIVE = `.${CLASS_NAME_ACTIVE}[data-bs-toggle="tab"], .${CLASS_NAME_ACTIVE}[data-bs-toggle="pill"], .${CLASS_NAME_ACTIVE}[data-bs-toggle="list"]` /** * Class definition */ class Tab extends BaseComponent { + constructor(element) { + super(element) + this._parent = this._element.closest(SELECTOR_TAB_PANEL) + + if (!this._parent) { + return + // todo: should Throw exception on v6 + // throw new TypeError(`${element.outerHTML} has not a valid parent ${SELECTOR_INNER_ELEM}`) + } + + // Set up initial aria attributes + this._setInitialAttributes(this._parent, this._getChildren()) + + EventHandler.on(this._element, EVENT_KEYDOWN, event => this._keydown(event)) + } + // Getters static get NAME() { return NAME } // Public - show() { - if (this._element.parentNode && - this._element.parentNode.nodeType === Node.ELEMENT_NODE && - this._element.classList.contains(CLASS_NAME_ACTIVE)) { + show() { // Shows this elem and deactivate the active sibling if exists + const innerElem = this._element + if (this._elemIsActive(innerElem)) { return } - const target = getElementFromSelector(this._element) - const listElement = this._element.closest(SELECTOR_NAV_LIST_GROUP) - let previous + // Search for active tab on same parent to deactivate it + const active = this._getActiveElem() - if (listElement) { - const itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? SELECTOR_ACTIVE_UL : SELECTOR_ACTIVE - previous = SelectorEngine.find(itemSelector, listElement) - previous = previous[previous.length - 1] - } - - const hideEvent = previous ? - EventHandler.trigger(previous, EVENT_HIDE, { relatedTarget: this._element }) : + const hideEvent = active ? + EventHandler.trigger(active, EVENT_HIDE, { relatedTarget: innerElem }) : null - const showEvent = EventHandler.trigger(this._element, EVENT_SHOW, { relatedTarget: previous }) + const showEvent = EventHandler.trigger(innerElem, EVENT_SHOW, { relatedTarget: active }) - if (showEvent.defaultPrevented || (hideEvent !== null && hideEvent.defaultPrevented)) { + if (showEvent.defaultPrevented || (hideEvent && hideEvent.defaultPrevented)) { return } - this._activate(this._element, listElement) + this._deactivate(active, innerElem) + this._activate(innerElem, active) + } - const complete = () => { - EventHandler.trigger(previous, EVENT_HIDDEN, { relatedTarget: this._element }) - EventHandler.trigger(this._element, EVENT_SHOWN, { relatedTarget: previous }) + // Private + _activate(element, relatedElem) { + if (!element) { + return } - if (target) { - this._activate(target, target.parentNode, complete) - } else { - complete() - } - } + element.classList.add(CLASS_NAME_ACTIVE) - // Private - _activate(element, container, callback) { - const activeElements = container && (container.nodeName === 'UL' || container.nodeName === 'OL') ? - SelectorEngine.find(SELECTOR_ACTIVE_UL, container) : - SelectorEngine.children(container, SELECTOR_ACTIVE) + this._activate(getElementFromSelector(element)) // Search and activate/show the proper section - const active = activeElements[0] - const isTransitioning = callback && (active && active.classList.contains(CLASS_NAME_FADE)) + const isAnimated = element.classList.contains(CLASS_NAME_FADE) + const complete = () => { + if (isAnimated) { // todo: maybe is redundant + element.classList.add(CLASS_NAME_SHOW) + } - const complete = () => this._transitionComplete(element, active, callback) + if (element.getAttribute('role') !== 'tab') { + return + } - if (active && isTransitioning) { - active.classList.remove(CLASS_NAME_SHOW) - this._queueCallback(complete, element, true) - } else { - complete() + element.focus() + element.removeAttribute('tabindex') + element.setAttribute('aria-selected', true) + this._toggleDropDown(element, true) + EventHandler.trigger(element, EVENT_SHOWN, { + relatedTarget: relatedElem + }) } + + this._queueCallback(complete, element, isAnimated) } - _transitionComplete(element, active, callback) { - if (active) { - active.classList.remove(CLASS_NAME_ACTIVE) + _deactivate(element, relatedElem) { + if (!element) { + return + } + + element.classList.remove(CLASS_NAME_ACTIVE) + element.blur() - const dropdownChild = SelectorEngine.findOne(SELECTOR_DROPDOWN_ACTIVE_CHILD, active.parentNode) + this._deactivate(getElementFromSelector(element)) // Search and deactivate the shown section too - if (dropdownChild) { - dropdownChild.classList.remove(CLASS_NAME_ACTIVE) + const isAnimated = element.classList.contains(CLASS_NAME_FADE) + const complete = () => { + if (isAnimated) { // todo maybe is redundant + element.classList.remove(CLASS_NAME_SHOW) } - if (active.getAttribute('role') === 'tab') { - active.setAttribute('aria-selected', false) + if (element.getAttribute('role') !== 'tab') { + return } + + element.setAttribute('aria-selected', false) + element.setAttribute('tabindex', '-1') + this._toggleDropDown(element, false) + EventHandler.trigger(element, EVENT_HIDDEN, { relatedTarget: relatedElem }) } - element.classList.add(CLASS_NAME_ACTIVE) - if (element.getAttribute('role') === 'tab') { - element.setAttribute('aria-selected', true) + this._queueCallback(complete, element, isAnimated) + } + + _keydown(event) { + if (!([ARROW_LEFT_KEY, ARROW_RIGHT_KEY, ARROW_UP_KEY, ARROW_DOWN_KEY].includes(event.key))) { + return + } + + event.stopPropagation()// stopPropagation/preventDefault both added to support up/down keys without scrolling the page + event.preventDefault() + const isNext = [ARROW_RIGHT_KEY, ARROW_DOWN_KEY].includes(event.key) + const nextActiveElement = getNextActiveElement(this._getChildren(), event.target, isNext, true) + Tab.getOrCreateInstance(nextActiveElement).show() + } + + _getChildren() { // collection of inner elements + return SelectorEngine.find(SELECTOR_INNER_ELEM, this._parent) + } + + _getActiveElem() { + return this._getChildren().find(child => this._elemIsActive(child)) || null + } + + _setInitialAttributes(parent, children) { + this._setAttributeIfNotExists(parent, 'role', 'tablist') + + for (const child of children) { + this._setInitialAttributesOnChild(child) } + } - reflow(element) + _setInitialAttributesOnChild(child) { + child = this._getInnerElement(child) + const isActive = this._elemIsActive(child) + const outerElem = this._getOuterElement(child) + child.setAttribute('aria-selected', isActive) - if (element.classList.contains(CLASS_NAME_FADE)) { - element.classList.add(CLASS_NAME_SHOW) + if (outerElem !== child) { + this._setAttributeIfNotExists(outerElem, 'role', 'presentation') } - let parent = element.parentNode - if (parent && parent.nodeName === 'LI') { - parent = parent.parentNode + if (!isActive) { + child.setAttribute('tabindex', '-1') } - if (parent && parent.classList.contains(CLASS_NAME_DROPDOWN_MENU)) { - const dropdownElement = element.closest(SELECTOR_DROPDOWN) + this._setAttributeIfNotExists(child, 'role', 'tab') - if (dropdownElement) { - for (const dropdown of SelectorEngine.find(SELECTOR_DROPDOWN_TOGGLE, dropdownElement)) { - dropdown.classList.add(CLASS_NAME_ACTIVE) - } - } + // set attributes to the related panel too + this._setInitialAttributesOnTargetPanel(child) + } + + _setInitialAttributesOnTargetPanel(child) { + const target = getElementFromSelector(child) - element.setAttribute('aria-expanded', true) + if (!target) { + return } - if (callback) { - callback() + this._setAttributeIfNotExists(target, 'role', 'tabpanel') + + if (child.id) { + this._setAttributeIfNotExists(target, 'aria-labelledby', `#${child.id}`) } } + _toggleDropDown(element, open) { + const outerElem = this._getOuterElement(element) + if (!outerElem.classList.contains(CLASS_DROPDOWN)) { + return + } + + const toggle = (selector, className) => { + const element = SelectorEngine.findOne(selector, outerElem) + if (element) { + element.classList.toggle(className, open) + } + } + + toggle(SELECTOR_DROPDOWN_TOGGLE, CLASS_NAME_ACTIVE) + toggle(SELECTOR_DROPDOWN_MENU, CLASS_NAME_SHOW) + toggle(SELECTOR_DROPDOWN_ITEM, CLASS_NAME_ACTIVE) + outerElem.setAttribute('aria-expanded', open) + } + + _setAttributeIfNotExists(element, attribute, value) { + if (!element.hasAttribute(attribute)) { + element.setAttribute(attribute, value) + } + } + + _elemIsActive(elem) { + return elem.classList.contains(CLASS_NAME_ACTIVE) + } + + // Try to get the inner element (usually the .nav-link) + _getInnerElement(elem) { + return elem.matches(SELECTOR_INNER_ELEM) ? elem : SelectorEngine.findOne(SELECTOR_INNER_ELEM, elem) + } + + // Try to get the outer element (usually the .nav-item) + _getOuterElement(elem) { + return elem.closest(SELECTOR_OUTER) || elem + } + // Static static jQueryInterface(config) { return this.each(function () { const data = Tab.getOrCreateInstance(this) - if (typeof config === 'string') { - if (typeof data[config] === 'undefined') { - throw new TypeError(`No method named "${config}"`) - } + if (typeof config !== 'string') { + return + } - data[config]() + if (data[config] === undefined || config.startsWith('_') || config === 'constructor') { + throw new TypeError(`No method named "${config}"`) } + + data[config]() }) } } @@ -186,11 +292,18 @@ EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function ( return } - const data = Tab.getOrCreateInstance(this) - data.show() + Tab.getOrCreateInstance(this).show() }) /** + * Initialize on focus + */ +EventHandler.on(window, EVENT_LOAD_DATA_API, () => { + for (const element of SelectorEngine.find(SELECTOR_DATA_TOGGLE_ACTIVE)) { + Tab.getOrCreateInstance(element) + } +}) +/** * jQuery */ |