<template> <div :class="cx('root')" role="region" v-bind="ptm('root')"> <div v-if="$slots.header" :class="cx('header')" v-bind="ptm('header')"> <slot name="header"></slot> </div> <div :class="[cx('content'), contentClass]" v-bind="ptm('content')"> <div :class="[cx('container'), containerClass]" :aria-live="allowAutoplay ? 'polite' : 'off'" v-bind="ptm('container')"> <button v-if="showNavigators" v-ripple type="button" :class="cx('previousButton')" :disabled="backwardIsDisabled" :aria-label="ariaPrevButtonLabel" @click="navBackward" v-bind="{ ...prevButtonProps, ...ptm('previousButton') }"> <slot name="previousicon"> <component :is="isVertical() ? 'ChevronUpIcon' : 'ChevronLeftIcon'" :class="cx('previousButtonIcon')" v-bind="ptm('previousButtonIcon')" /> </slot> </button> <div :class="cx('itemsContent')" :style="[{ height: isVertical() ? verticalViewPortHeight : 'auto' }]" @touchend="onTouchEnd" @touchstart="onTouchStart" @touchmove="onTouchMove" v-bind="ptm('itemsContent')"> <div ref="itemsContainer" :class="cx('itemsContainer')" @transitionend="onTransitionEnd" v-bind="ptm('itemsContainer')"> <template v-if="isCircular()"> <div v-for="(item, index) of value.slice(-1 * d_numVisible)" :key="index + '_scloned'" :class="cx('itemCloned', { index, value, totalShiftedItems, d_numVisible })" v-bind="ptm('itemCloned')" :data-p-carousel-item-active="totalShiftedItems * -1 === value.length + d_numVisible" :data-p-carousel-item-start="index === 0" :data-p-carousel-item-end="value.slice(-1 * d_numVisible).length - 1 === index" > <slot name="item" :data="item" :index="index"></slot> </div> </template> <div v-for="(item, index) of value" :key="index" :class="cx('item', { index })" role="group" :aria-hidden="firstIndex() > index || lastIndex() < index ? true : undefined" :aria-label="ariaSlideNumber(index)" :aria-roledescription="ariaSlideLabel" v-bind="ptm('item')" :data-p-carousel-item-active="firstIndex() <= index && lastIndex() >= index" :data-p-carousel-item-start="firstIndex() === index" :data-p-carousel-item-end="lastIndex() === index" > <slot name="item" :data="item" :index="index"></slot> </div> <template v-if="isCircular()"> <div v-for="(item, index) of value.slice(0, d_numVisible)" :key="index + '_fcloned'" :class="cx('itemCloned', { index, value, totalShiftedItems, d_numVisible })" v-bind="ptm('itemCloned')"> <slot name="item" :data="item" :index="index"></slot> </div> </template> </div> </div> <button v-if="showNavigators" v-ripple type="button" :class="cx('nextButton')" :disabled="forwardIsDisabled" :aria-label="ariaNextButtonLabel" @click="navForward" v-bind="{ ...nextButtonProps, ...ptm('nextButton') }"> <slot name="nexticon"> <component :is="isVertical() ? 'ChevronDownIcon' : 'ChevronRightIcon'" :class="cx('nextButtonIcon')" v-bind="ptm('nextButtonIcon')" /> </slot> </button> </div> <ul v-if="totalIndicators >= 0 && showIndicators" ref="indicatorContent" :class="[cx('indicators'), indicatorsContentClass]" @keydown="onIndicatorKeydown" v-bind="ptm('indicators')"> <li v-for="(indicator, i) of totalIndicators" :key="'p-carousel-indicator-' + i.toString()" :class="cx('indicator', { index: i })" v-bind="ptm('indicator')" :data-p-highlight="d_page === i"> <button :class="cx('indicatorButton')" type="button" :tabindex="d_page === i ? '0' : '-1'" :aria-label="ariaPageLabel(i + 1)" :aria-current="d_page === i ? 'page' : undefined" @click="onIndicatorClick($event, i)" v-bind="ptm('indicatorButton')" /> </li> </ul> </div> <div v-if="$slots.footer" :class="cx('footer')" v-bind="ptm('footer')"> <slot name="footer"></slot> </div> </div> </template> <script> import ChevronDownIcon from 'primevue/icons/chevrondown'; import ChevronLeftIcon from 'primevue/icons/chevronleft'; import ChevronRightIcon from 'primevue/icons/chevronright'; import ChevronUpIcon from 'primevue/icons/chevronup'; import Ripple from 'primevue/ripple'; import { DomHandler, UniqueComponentId } from 'primevue/utils'; import BaseCarousel from './BaseCarousel.vue'; export default { name: 'Carousel', extends: BaseCarousel, emits: ['update:page'], isRemainingItemsAdded: false, data() { return { remainingItems: 0, d_numVisible: this.numVisible, d_numScroll: this.numScroll, d_oldNumScroll: 0, d_oldNumVisible: 0, d_oldValue: null, d_page: this.page, totalShiftedItems: this.page * this.numScroll * -1, allowAutoplay: !!this.autoplayInterval, d_circular: this.circular || this.allowAutoplay, swipeThreshold: 20 }; }, watch: { page(newValue) { this.d_page = newValue; }, circular(newValue) { this.d_circular = newValue; }, numVisible(newValue, oldValue) { this.d_numVisible = newValue; this.d_oldNumVisible = oldValue; }, numScroll(newValue, oldValue) { this.d_oldNumScroll = oldValue; this.d_numScroll = newValue; }, value(oldValue) { this.d_oldValue = oldValue; } }, mounted() { let stateChanged = false; this.$el.setAttribute(this.attributeSelector, ''); this.createStyle(); this.calculatePosition(); if (this.responsiveOptions) { this.bindDocumentListeners(); } if (this.isCircular()) { let totalShiftedItems = this.totalShiftedItems; if (this.d_page === 0) { totalShiftedItems = -1 * this.d_numVisible; } else if (totalShiftedItems === 0) { totalShiftedItems = -1 * this.value.length; if (this.remainingItems > 0) { this.isRemainingItemsAdded = true; } } if (totalShiftedItems !== this.totalShiftedItems) { this.totalShiftedItems = totalShiftedItems; stateChanged = true; } } if (!stateChanged && this.isAutoplay()) { this.startAutoplay(); } }, updated() { const isCircular = this.isCircular(); let stateChanged = false; let totalShiftedItems = this.totalShiftedItems; if (this.autoplayInterval) { this.stopAutoplay(); } if (this.d_oldNumScroll !== this.d_numScroll || this.d_oldNumVisible !== this.d_numVisible || this.d_oldValue.length !== this.value.length) { this.remainingItems = (this.value.length - this.d_numVisible) % this.d_numScroll; let page = this.d_page; if (this.totalIndicators !== 0 && page >= this.totalIndicators) { page = this.totalIndicators - 1; this.$emit('update:page', page); this.d_page = page; stateChanged = true; } totalShiftedItems = page * this.d_numScroll * -1; if (isCircular) { totalShiftedItems -= this.d_numVisible; } if (page === this.totalIndicators - 1 && this.remainingItems > 0) { totalShiftedItems += -1 * this.remainingItems + this.d_numScroll; this.isRemainingItemsAdded = true; } else { this.isRemainingItemsAdded = false; } if (totalShiftedItems !== this.totalShiftedItems) { this.totalShiftedItems = totalShiftedItems; stateChanged = true; } this.d_oldNumScroll = this.d_numScroll; this.d_oldNumVisible = this.d_numVisible; this.d_oldValue = this.value; this.$refs.itemsContainer.style.transform = this.isVertical() ? `translate3d(0, ${totalShiftedItems * (100 / this.d_numVisible)}%, 0)` : `translate3d(${totalShiftedItems * (100 / this.d_numVisible)}%, 0, 0)`; } if (isCircular) { if (this.d_page === 0) { totalShiftedItems = -1 * this.d_numVisible; } else if (totalShiftedItems === 0) { totalShiftedItems = -1 * this.value.length; if (this.remainingItems > 0) { this.isRemainingItemsAdded = true; } } if (totalShiftedItems !== this.totalShiftedItems) { this.totalShiftedItems = totalShiftedItems; stateChanged = true; } } if (!stateChanged && this.isAutoplay()) { this.startAutoplay(); } }, beforeUnmount() { if (this.responsiveOptions) { this.unbindDocumentListeners(); } if (this.autoplayInterval) { this.stopAutoplay(); } }, methods: { step(dir, page) { let totalShiftedItems = this.totalShiftedItems; const isCircular = this.isCircular(); if (page != null) { totalShiftedItems = this.d_numScroll * page * -1; if (isCircular) { totalShiftedItems -= this.d_numVisible; } this.isRemainingItemsAdded = false; } else { totalShiftedItems += this.d_numScroll * dir; if (this.isRemainingItemsAdded) { totalShiftedItems += this.remainingItems - this.d_numScroll * dir; this.isRemainingItemsAdded = false; } let originalShiftedItems = isCircular ? totalShiftedItems + this.d_numVisible : totalShiftedItems; page = Math.abs(Math.floor(originalShiftedItems / this.d_numScroll)); } if (isCircular && this.d_page === this.totalIndicators - 1 && dir === -1) { totalShiftedItems = -1 * (this.value.length + this.d_numVisible); page = 0; } else if (isCircular && this.d_page === 0 && dir === 1) { totalShiftedItems = 0; page = this.totalIndicators - 1; } else if (page === this.totalIndicators - 1 && this.remainingItems > 0) { totalShiftedItems += this.remainingItems * -1 - this.d_numScroll * dir; this.isRemainingItemsAdded = true; } if (this.$refs.itemsContainer) { !this.isUnstyled && DomHandler.removeClass(this.$refs.itemsContainer, 'p-items-hidden'); this.$refs.itemsContainer.style.transform = this.isVertical() ? `translate3d(0, ${totalShiftedItems * (100 / this.d_numVisible)}%, 0)` : `translate3d(${totalShiftedItems * (100 / this.d_numVisible)}%, 0, 0)`; this.$refs.itemsContainer.style.transition = 'transform 500ms ease 0s'; } this.totalShiftedItems = totalShiftedItems; this.$emit('update:page', page); this.d_page = page; }, calculatePosition() { if (this.$refs.itemsContainer && this.responsiveOptions) { let windowWidth = window.innerWidth; let matchedResponsiveOptionsData = { numVisible: this.numVisible, numScroll: this.numScroll }; for (let i = 0; i < this.responsiveOptions.length; i++) { let res = this.responsiveOptions[i]; if (parseInt(res.breakpoint, 10) >= windowWidth) { matchedResponsiveOptionsData = res; } } if (this.d_numScroll !== matchedResponsiveOptionsData.numScroll) { let page = this.d_page; page = parseInt((page * this.d_numScroll) / matchedResponsiveOptionsData.numScroll); this.totalShiftedItems = matchedResponsiveOptionsData.numScroll * page * -1; if (this.isCircular()) { this.totalShiftedItems -= matchedResponsiveOptionsData.numVisible; } this.d_numScroll = matchedResponsiveOptionsData.numScroll; this.$emit('update:page', page); this.d_page = page; } if (this.d_numVisible !== matchedResponsiveOptionsData.numVisible) { this.d_numVisible = matchedResponsiveOptionsData.numVisible; } } }, navBackward(e, index) { if (this.d_circular || this.d_page !== 0) { this.step(1, index); } this.allowAutoplay = false; if (e.cancelable) { e.preventDefault(); } }, navForward(e, index) { if (this.d_circular || this.d_page < this.totalIndicators - 1) { this.step(-1, index); } this.allowAutoplay = false; if (e.cancelable) { e.preventDefault(); } }, onIndicatorClick(e, index) { let page = this.d_page; if (index > page) { this.navForward(e, index); } else if (index < page) { this.navBackward(e, index); } }, onTransitionEnd() { if (this.$refs.itemsContainer) { !this.isUnstyled && DomHandler.addClass(this.$refs.itemsContainer, 'p-items-hidden'); this.$refs.itemsContainer.style.transition = ''; if ((this.d_page === 0 || this.d_page === this.totalIndicators - 1) && this.isCircular()) { this.$refs.itemsContainer.style.transform = this.isVertical() ? `translate3d(0, ${this.totalShiftedItems * (100 / this.d_numVisible)}%, 0)` : `translate3d(${this.totalShiftedItems * (100 / this.d_numVisible)}%, 0, 0)`; } } }, onTouchStart(e) { let touchobj = e.changedTouches[0]; this.startPos = { x: touchobj.pageX, y: touchobj.pageY }; }, onTouchMove(e) { if (e.cancelable) { e.preventDefault(); } }, onTouchEnd(e) { let touchobj = e.changedTouches[0]; if (this.isVertical()) { this.changePageOnTouch(e, touchobj.pageY - this.startPos.y); } else { this.changePageOnTouch(e, touchobj.pageX - this.startPos.x); } }, changePageOnTouch(e, diff) { if (Math.abs(diff) > this.swipeThreshold) { if (diff < 0) { // left this.navForward(e); } else { // right this.navBackward(e); } } }, onIndicatorKeydown(event) { switch (event.code) { case 'ArrowRight': this.onRightKey(); break; case 'ArrowLeft': this.onLeftKey(); break; case 'Home': this.onHomeKey(); event.preventDefault(); break; case 'End': this.onEndKey(); event.preventDefault(); break; case 'ArrowUp': case 'ArrowDown': event.preventDefault(); break; case 'Tab': this.onTabKey(); break; default: break; } }, onRightKey() { const indicators = [...DomHandler.find(this.$refs.indicatorContent, '[data-pc-section="indicator"]')]; const activeIndex = this.findFocusedIndicatorIndex(); this.changedFocusedIndicator(activeIndex, activeIndex + 1 === indicators.length ? indicators.length - 1 : activeIndex + 1); }, onLeftKey() { const activeIndex = this.findFocusedIndicatorIndex(); this.changedFocusedIndicator(activeIndex, activeIndex - 1 <= 0 ? 0 : activeIndex - 1); }, onHomeKey() { const activeIndex = this.findFocusedIndicatorIndex(); this.changedFocusedIndicator(activeIndex, 0); }, onEndKey() { const indicators = [...DomHandler.find(this.$refs.indicatorContent, '[data-pc-section="indicator"]r')]; const activeIndex = this.findFocusedIndicatorIndex(); this.changedFocusedIndicator(activeIndex, indicators.length - 1); }, onTabKey() { const indicators = [...DomHandler.find(this.$refs.indicatorContent, '[data-pc-section="indicator"]')]; const highlightedIndex = indicators.findIndex((ind) => DomHandler.getAttribute(ind, 'data-p-highlight') === true); const activeIndicator = DomHandler.findSingle(this.$refs.indicatorContent, '[data-pc-section="indicator"] > button[tabindex="0"]'); const activeIndex = indicators.findIndex((ind) => ind === activeIndicator.parentElement); indicators[activeIndex].children[0].tabIndex = '-1'; indicators[highlightedIndex].children[0].tabIndex = '0'; }, findFocusedIndicatorIndex() { const indicators = [...DomHandler.find(this.$refs.indicatorContent, '[data-pc-section="indicator"]')]; const activeIndicator = DomHandler.findSingle(this.$refs.indicatorContent, '[data-pc-section="indicator"] > button[tabindex="0"]'); return indicators.findIndex((ind) => ind === activeIndicator.parentElement); }, changedFocusedIndicator(prevInd, nextInd) { const indicators = [...DomHandler.find(this.$refs.indicatorContent, '[data-pc-section="indicator"]')]; indicators[prevInd].children[0].tabIndex = '-1'; indicators[nextInd].children[0].tabIndex = '0'; indicators[nextInd].children[0].focus(); }, bindDocumentListeners() { if (!this.documentResizeListener) { this.documentResizeListener = (e) => { this.calculatePosition(e); }; window.addEventListener('resize', this.documentResizeListener); } }, unbindDocumentListeners() { if (this.documentResizeListener) { window.removeEventListener('resize', this.documentResizeListener); this.documentResizeListener = null; } }, startAutoplay() { this.interval = setInterval(() => { if (this.d_page === this.totalIndicators - 1) { this.step(-1, 0); } else { this.step(-1, this.d_page + 1); } }, this.autoplayInterval); }, stopAutoplay() { if (this.interval) { clearInterval(this.interval); } }, createStyle() { if (!this.carouselStyle) { this.carouselStyle = document.createElement('style'); this.carouselStyle.type = 'text/css'; document.body.appendChild(this.carouselStyle); } let innerHTML = ` .p-carousel[${this.attributeSelector}] .p-carousel-item { flex: 1 0 ${100 / this.d_numVisible}% } `; if (this.responsiveOptions && !this.isUnstyled) { let _responsiveOptions = [...this.responsiveOptions]; _responsiveOptions.sort((data1, data2) => { const value1 = data1.breakpoint; const value2 = data2.breakpoint; let result = null; if (value1 == null && value2 != null) result = -1; else if (value1 != null && value2 == null) result = 1; else if (value1 == null && value2 == null) result = 0; else if (typeof value1 === 'string' && typeof value2 === 'string') result = value1.localeCompare(value2, undefined, { numeric: true }); else result = value1 < value2 ? -1 : value1 > value2 ? 1 : 0; return -1 * result; }); for (let i = 0; i < _responsiveOptions.length; i++) { let res = _responsiveOptions[i]; innerHTML += ` @media screen and (max-width: ${res.breakpoint}) { .p-carousel[${this.attributeSelector}] .p-carousel-item { flex: 1 0 ${100 / res.numVisible}% } } `; } } this.carouselStyle.innerHTML = innerHTML; }, isVertical() { return this.orientation === 'vertical'; }, isCircular() { return this.value && this.d_circular && this.value.length >= this.d_numVisible; }, isAutoplay() { return this.autoplayInterval && this.allowAutoplay; }, firstIndex() { return this.isCircular() ? -1 * (this.totalShiftedItems + this.d_numVisible) : this.totalShiftedItems * -1; }, lastIndex() { return this.firstIndex() + this.d_numVisible - 1; }, ariaSlideNumber(value) { return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.slideNumber.replace(/{slideNumber}/g, value) : undefined; }, ariaPageLabel(value) { return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.pageLabel.replace(/{page}/g, value) : undefined; } }, computed: { totalIndicators() { return this.value ? Math.max(Math.ceil((this.value.length - this.d_numVisible) / this.d_numScroll) + 1, 0) : 0; }, backwardIsDisabled() { return this.value && (!this.circular || this.value.length < this.d_numVisible) && this.d_page === 0; }, forwardIsDisabled() { return this.value && (!this.circular || this.value.length < this.d_numVisible) && (this.d_page === this.totalIndicators - 1 || this.totalIndicators === 0); }, ariaSlideLabel() { return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.slide : undefined; }, ariaPrevButtonLabel() { return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.prevPageLabel : undefined; }, ariaNextButtonLabel() { return this.$primevue.config.locale.aria ? this.$primevue.config.locale.aria.nextPageLabel : undefined; }, attributeSelector() { return UniqueComponentId(); } }, components: { ChevronRightIcon, ChevronDownIcon, ChevronLeftIcon, ChevronUpIcon }, directives: { ripple: Ripple } }; </script>