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Carousel: Fix not used option (`ride`), simplify `cycle` method (#35983) 

* Fix not used option (`ride`)  (according to docs), continuing of #35753 a247fe9
* separate concept of  `programmatical cycle`  vs `maybe cycle after click` functionality
This commit is contained in:
GeoSot 2022-04-21 22:42:17 +03:00 committed by GitHub
parent 584600bda3
commit 554736834d
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3 changed files with 143 additions and 146 deletions
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72
js/src/carousel.js
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@ -71,19 +71,19 @@ const KEY_TO_DIRECTION = {
const Default = {
interval: 5000,
keyboard: true,
slide: false,
pause: 'hover',
wrap: true,
touch: true
ride: false,
touch: true,
wrap: true
}
const DefaultType = {
interval: '(number|boolean)',
keyboard: 'boolean',
slide: '(boolean|string)',
ride: '(boolean|string)',
pause: '(string|boolean)',
wrap: 'boolean',
touch: 'boolean'
touch: 'boolean',
wrap: 'boolean'
}
/**
@ -96,13 +96,16 @@ class Carousel extends BaseComponent {
this._interval = null
this._activeElement = null
this._stayPaused = false
this._isSliding = false
this.touchTimeout = null
this._swipeHelper = null
this._indicatorsElement = SelectorEngine.findOne(SELECTOR_INDICATORS, this._element)
this._addEventListeners()
if (this._config.ride === CLASS_NAME_CAROUSEL) {
this.cycle()
}
}
// Getters
@ -136,30 +139,32 @@ class Carousel extends BaseComponent {
this._slide(ORDER_PREV)
}
pause(event) {
if (!event) {
this._stayPaused = true
}
pause() {
if (this._isSliding) {
triggerTransitionEnd(this._element)
this.cycle(true)
}
this._clearInterval()
}
cycle(event) {
if (!event) {
this._stayPaused = false
}
cycle() {
this._clearInterval()
if (this._config.interval && !this._stayPaused) {
this._updateInterval()
this._updateInterval()
this._interval = setInterval(() => this.nextWhenVisible(), this._config.interval)
this._interval = setInterval(() => this.nextWhenVisible(), this._config.interval)
}
_maybeEnableCycle() {
if (!this._config.ride) {
return
}
if (this._isSliding) {
EventHandler.one(this._element, EVENT_SLID, () => this.cycle())
return
}
this.cycle()
}
to(index) {
@ -175,8 +180,6 @@ class Carousel extends BaseComponent {
const activeIndex = this._getItemIndex(this._getActive())
if (activeIndex === index) {
this.pause()
this.cycle()
return
}
@ -205,8 +208,8 @@ class Carousel extends BaseComponent {
}
if (this._config.pause === 'hover') {
EventHandler.on(this._element, EVENT_MOUSEENTER, event => this.pause(event))
EventHandler.on(this._element, EVENT_MOUSELEAVE, event => this.cycle(event))
EventHandler.on(this._element, EVENT_MOUSEENTER, () => this.pause())
EventHandler.on(this._element, EVENT_MOUSELEAVE, () => this._maybeEnableCycle())
}
if (this._config.touch && Swipe.isSupported()) {
@ -237,7 +240,7 @@ class Carousel extends BaseComponent {
clearTimeout(this.touchTimeout)
}
this.touchTimeout = setTimeout(event => this.cycle(event), TOUCHEVENT_COMPAT_WAIT + this._config.interval)
this.touchTimeout = setTimeout(() => this._maybeEnableCycle(), TOUCHEVENT_COMPAT_WAIT + this._config.interval)
}
const swipeConfig = {
@ -331,12 +334,10 @@ class Carousel extends BaseComponent {
return
}
this._isSliding = true
const isCycling = Boolean(this._interval)
if (isCycling) {
this.pause()
}
this.pause()
this._isSliding = true
this._setActiveIndicatorElement(nextElementIndex)
this._activeElement = nextElement
@ -420,12 +421,6 @@ class Carousel extends BaseComponent {
}
data[config]()
return
}
if (data._config.interval && data._config.ride) {
data.pause()
data.cycle()
}
})
}
@ -449,15 +444,18 @@ EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_SLIDE, function (e
if (slideIndex) {
carousel.to(slideIndex)
carousel._maybeEnableCycle()
return
}
if (Manipulator.getDataAttribute(this, 'slide') === 'next') {
carousel.next()
carousel._maybeEnableCycle()
return
}
carousel.prev()
carousel._maybeEnableCycle()
})
EventHandler.on(window, EVENT_LOAD_DATA_API, () => {

209
js/tests/unit/carousel.spec.js
View File

@ -63,6 +63,20 @@ describe('Carousel', () => {
expect(carouselByElement._element).toEqual(carouselEl)
})
it('should start cycling if `ride`===`carousel`', () => {
fixtureEl.innerHTML = '<div id="myCarousel" class="carousel slide" data-bs-ride="carousel"></div>'
const carousel = new Carousel('#myCarousel')
expect(carousel._interval).not.toBeNull()
})
it('should not start cycling if `ride`!==`carousel`', () => {
fixtureEl.innerHTML = '<div id="myCarousel" class="carousel slide" data-bs-ride="true"></div>'
const carousel = new Carousel('#myCarousel')
expect(carousel._interval).toBeNull()
})
it('should go to next item if right arrow key is pressed', () => {
return new Promise(resolve => {
fixtureEl.innerHTML = [
@ -95,6 +109,40 @@ describe('Carousel', () => {
})
})
it('should ignore keyboard events if data-bs-keyboard=false', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide" data-bs-keyboard="false">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div id="item2" class="carousel-item">item 2</div>',
' </div>',
'</div>'
].join('')
spyOn(EventHandler, 'trigger').and.callThrough()
const carouselEl = fixtureEl.querySelector('#myCarousel')
// eslint-disable-next-line no-new
new Carousel('#myCarousel')
expect(EventHandler.trigger).not.toHaveBeenCalledWith(carouselEl, 'keydown.bs.carousel', jasmine.any(Function))
})
it('should ignore mouse events if data-bs-pause=false', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide" data-bs-pause="false">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div id="item2" class="carousel-item">item 2</div>',
' </div>',
'</div>'
].join('')
spyOn(EventHandler, 'trigger').and.callThrough()
const carouselEl = fixtureEl.querySelector('#myCarousel')
// eslint-disable-next-line no-new
new Carousel('#myCarousel')
expect(EventHandler.trigger).not.toHaveBeenCalledWith(carouselEl, 'hover.bs.carousel', jasmine.any(Function))
})
it('should go to previous item if left arrow key is pressed', () => {
return new Promise(resolve => {
fixtureEl.innerHTML = [
@ -612,19 +660,21 @@ describe('Carousel', () => {
})
})
it('should call cycle on mouse out with pause equal to hover', () => {
it('should call `maybeCycle` on mouse out with pause equal to hover', () => {
return new Promise(resolve => {
fixtureEl.innerHTML = '<div class="carousel"></div>'
fixtureEl.innerHTML = '<div class="carousel" data-bs-ride="true"></div>'
const carouselEl = fixtureEl.querySelector('.carousel')
const carousel = new Carousel(carouselEl)
spyOn(carousel, '_maybeEnableCycle').and.callThrough()
spyOn(carousel, 'cycle')
const mouseOutEvent = createEvent('mouseout')
carouselEl.dispatchEvent(mouseOutEvent)
setTimeout(() => {
expect(carousel._maybeEnableCycle).toHaveBeenCalled()
expect(carousel.cycle).toHaveBeenCalled()
resolve()
}, 10)
@ -769,6 +819,28 @@ describe('Carousel', () => {
expect(carousel._activeElement).toEqual(secondItemEl)
})
it('should continue cycling if it was already', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div class="carousel-item">item 2</div>',
' </div>',
'</div>'
].join('')
const carouselEl = fixtureEl.querySelector('#myCarousel')
const carousel = new Carousel(carouselEl)
spyOn(carousel, 'cycle')
carousel.next()
expect(carousel.cycle).not.toHaveBeenCalled()
carousel.cycle()
carousel.next()
expect(carousel.cycle).toHaveBeenCalled()
})
it('should update indicators if present', () => {
return new Promise(resolve => {
fixtureEl.innerHTML = [
@ -823,12 +895,14 @@ describe('Carousel', () => {
const carousel = new Carousel(carouselEl)
const nextSpy = spyOn(carousel, 'next')
const prevSpy = spyOn(carousel, 'prev')
spyOn(carousel, '_maybeEnableCycle')
nextBtnEl.click()
prevBtnEl.click()
expect(nextSpy).toHaveBeenCalled()
expect(prevSpy).toHaveBeenCalled()
expect(carousel._maybeEnableCycle).toHaveBeenCalled()
})
})
@ -868,82 +942,32 @@ describe('Carousel', () => {
})
describe('pause', () => {
it('should call cycle if the carousel have carousel-item-next or carousel-item-prev class, cause is sliding', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div class="carousel-item carousel-item-next">item 2</div>',
' <div class="carousel-item">item 3</div>',
' </div>',
' <div class="carousel-control-prev"></div>',
' <div class="carousel-control-next"></div>',
'</div>'
].join('')
it('should trigger transitionend if the carousel have carousel-item-next or carousel-item-prev class, cause is sliding', () => {
return new Promise(resolve => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div class="carousel-item carousel-item-next">item 2</div>',
' <div class="carousel-item">item 3</div>',
' </div>',
' <div class="carousel-control-prev"></div>',
' <div class="carousel-control-next"></div>',
'</div>'
].join('')
const carouselEl = fixtureEl.querySelector('#myCarousel')
const carousel = new Carousel(carouselEl)
const carouselEl = fixtureEl.querySelector('#myCarousel')
const carousel = new Carousel(carouselEl)
spyOn(carousel, 'cycle')
spyOn(carousel, '_clearInterval')
carouselEl.addEventListener('transitionend', () => {
expect(carousel._clearInterval).toHaveBeenCalled()
resolve()
})
carousel._slide('next')
carousel.pause()
expect(carousel.cycle).toHaveBeenCalledWith(true)
expect(carousel._clearInterval).toHaveBeenCalled()
expect(carousel._stayPaused).toBeTrue()
})
it('should not call cycle if nothing is in transition', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div class="carousel-item">item 2</div>',
' <div class="carousel-item">item 3</div>',
' </div>',
' <div class="carousel-control-prev"></div>',
' <div class="carousel-control-next"></div>',
'</div>'
].join('')
const carouselEl = fixtureEl.querySelector('#myCarousel')
const carousel = new Carousel(carouselEl)
spyOn(carousel, 'cycle')
spyOn(carousel, '_clearInterval')
carousel.pause()
expect(carousel.cycle).not.toHaveBeenCalled()
expect(carousel._clearInterval).toHaveBeenCalled()
expect(carousel._stayPaused).toBeTrue()
})
it('should not set is paused at true if an event is passed', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div class="carousel-item">item 2</div>',
' <div class="carousel-item">item 3</div>',
' </div>',
' <div class="carousel-control-prev"></div>',
' <div class="carousel-control-next"></div>',
'</div>'
].join('')
const carouselEl = fixtureEl.querySelector('#myCarousel')
const carousel = new Carousel(carouselEl)
const event = createEvent('mouseenter')
spyOn(carousel, '_clearInterval')
carousel.pause(event)
expect(carousel._clearInterval).toHaveBeenCalled()
expect(carousel._stayPaused).toBeFalse()
spyOn(carousel, '_clearInterval')
carousel._slide('next')
carousel.pause()
})
})
})
@ -971,30 +995,6 @@ describe('Carousel', () => {
expect(window.setInterval).toHaveBeenCalled()
})
it('should not set interval if the carousel is paused', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div class="carousel-item">item 2</div>',
' <div class="carousel-item">item 3</div>',
' </div>',
' <div class="carousel-control-prev"></div>',
' <div class="carousel-control-next"></div>',
'</div>'
].join('')
const carouselEl = fixtureEl.querySelector('#myCarousel')
const carousel = new Carousel(carouselEl)
spyOn(window, 'setInterval').and.callThrough()
carousel._stayPaused = true
carousel.cycle(true)
expect(window.setInterval).not.toHaveBeenCalled()
})
it('should clear interval if there is one', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
@ -1132,7 +1132,7 @@ describe('Carousel', () => {
expect(spy).not.toHaveBeenCalled()
})
it('should call pause and cycle is the provided is the same compare to the current one', () => {
it('should not continue if the provided is the same compare to the current one', () => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
' <div class="carousel-inner">',
@ -1153,8 +1153,6 @@ describe('Carousel', () => {
carousel.to(0)
expect(carousel._slide).not.toHaveBeenCalled()
expect(carousel.pause).toHaveBeenCalled()
expect(carousel.cycle).toHaveBeenCalled()
})
it('should wait before performing to if a slide is sliding', () => {
@ -1449,8 +1447,8 @@ describe('Carousel', () => {
const loadEvent = createEvent('load')
window.dispatchEvent(loadEvent)
expect(Carousel.getInstance(carouselEl)).not.toBeNull()
const carousel = Carousel.getInstance(carouselEl)
expect(carousel._interval).not.toBeNull()
})
it('should create carousel and go to the next slide on click (with real button controls)', () => {
@ -1508,7 +1506,7 @@ describe('Carousel', () => {
it('should create carousel and go to the next slide on click with data-bs-slide-to', () => {
return new Promise(resolve => {
fixtureEl.innerHTML = [
'<div id="myCarousel" class="carousel slide">',
'<div id="myCarousel" class="carousel slide" data-bs-ride="true">',
' <div class="carousel-inner">',
' <div class="carousel-item active">item 1</div>',
' <div id="item2" class="carousel-item">item 2</div>',
@ -1525,6 +1523,7 @@ describe('Carousel', () => {
setTimeout(() => {
expect(item2).toHaveClass('active')
expect(Carousel.getInstance('#myCarousel')._interval).not.toBeNull()
resolve()
}, 10)
})

8
site/content/docs/5.1/components/carousel.md
View File

@ -77,7 +77,7 @@ Adding in the previous and next controls. We recommend using `<button>` elements
You can also add the indicators to the carousel, alongside the controls, too.
{{< example >}}
<div id="carouselExampleIndicators" class="carousel slide" data-bs-ride="carousel">
<div id="carouselExampleIndicators" class="carousel slide" data-bs-ride="true">
<div class="carousel-indicators">
<button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="0" class="active" aria-current="true" aria-label="Slide 1"></button>
<button type="button" data-bs-target="#carouselExampleIndicators" data-bs-slide-to="1" aria-label="Slide 2"></button>
@ -110,7 +110,7 @@ You can also add the indicators to the carousel, alongside the controls, too.
Add captions to your slides easily with the `.carousel-caption` element within any `.carousel-item`. They can be easily hidden on smaller viewports, as shown below, with optional [display utilities]({{< docsref "/utilities/display" >}}). We hide them initially with `.d-none` and bring them back on medium-sized devices with `.d-md-block`.
{{< example >}}
<div id="carouselExampleCaptions" class="carousel slide" data-bs-ride="carousel">
<div id="carouselExampleCaptions" class="carousel slide" data-bs-ride="false">
<div class="carousel-indicators">
<button type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide-to="0" class="active" aria-current="true" aria-label="Slide 1"></button>
<button type="button" data-bs-target="#carouselExampleCaptions" data-bs-slide-to="1" aria-label="Slide 2"></button>
@ -318,9 +318,9 @@ var carousel = new bootstrap.Carousel(myCarousel)
| `interval` | number | `5000` | The amount of time to delay between automatically cycling an item. If `false`, carousel will not automatically cycle. |
| `keyboard` | boolean | `true` | Whether the carousel should react to keyboard events. |
| `pause` | string, boolean | `"hover"` | If set to `"hover"`, pauses the cycling of the carousel on `mouseenter` and resumes the cycling of the carousel on `mouseleave`. If set to `false`, hovering over the carousel won't pause it. On touch-enabled devices, when set to `"hover"`, cycling will pause on `touchend` (once the user finished interacting with the carousel) for two intervals, before automatically resuming. This is in addition to the mouse behavior. |
| `ride` | string, boolean | `false` | Autoplays the carousel after the user manually cycles the first item. If set to`"carousel"`, autoplays the carousel on load. |
| `wrap` | boolean | `true` | Whether the carousel should cycle continuously or have hard stops. |
| `ride` | string, boolean | `false` | If set to `true`, autoplays the carousel after the user manually cycles the first item. If set to `"carousel"`, autoplays the carousel on load. |
| `touch` | boolean | `true` | Whether the carousel should support left/right swipe interactions on touchscreen devices. |
| `wrap` | boolean | `true` | Whether the carousel should cycle continuously or have hard stops. |
{{< /bs-table >}}
### Methods