element-plus
Version:
A Component Library for Vue 3
294 lines (289 loc) • 8.55 kB
JavaScript
;
Object.defineProperty(exports, '__esModule', { value: true });
var vue = require('vue');
var lodashUnified = require('lodash-unified');
var core = require('@vueuse/core');
var constants = require('./constants.js');
var index = require('../../../hooks/use-ordered-children/index.js');
var shared = require('@vue/shared');
var error = require('../../../utils/error.js');
var vnode = require('../../../utils/vue/vnode.js');
var event = require('../../../constants/event.js');
const THROTTLE_TIME = 300;
const useCarousel = (props, emit, componentName) => {
const {
children: items,
addChild: addItem,
removeChild: removeItem
} = index.useOrderedChildren(vue.getCurrentInstance(), constants.CAROUSEL_ITEM_NAME);
const slots = vue.useSlots();
const activeIndex = vue.ref(-1);
const timer = vue.ref(null);
const hover = vue.ref(false);
const root = vue.ref();
const containerHeight = vue.ref(0);
const isItemsTwoLength = vue.ref(true);
const isFirstCall = vue.ref(true);
const isTransitioning = vue.ref(false);
const arrowDisplay = vue.computed(() => props.arrow !== "never" && !vue.unref(isVertical));
const hasLabel = vue.computed(() => {
return items.value.some((item) => item.props.label.toString().length > 0);
});
const isCardType = vue.computed(() => props.type === "card");
const isVertical = vue.computed(() => props.direction === "vertical");
const containerStyle = vue.computed(() => {
if (props.height !== "auto") {
return {
height: props.height
};
}
return {
height: `${containerHeight.value}px`,
overflow: "hidden"
};
});
const throttledArrowClick = lodashUnified.throttle((index) => {
setActiveItem(index);
}, THROTTLE_TIME, { trailing: true });
const throttledIndicatorHover = lodashUnified.throttle((index) => {
handleIndicatorHover(index);
}, THROTTLE_TIME);
const isTwoLengthShow = (index) => {
if (!isItemsTwoLength.value)
return true;
return activeIndex.value <= 1 ? index <= 1 : index > 1;
};
function pauseTimer() {
if (timer.value) {
clearInterval(timer.value);
timer.value = null;
}
}
function startTimer() {
if (props.interval <= 0 || !props.autoplay || timer.value)
return;
timer.value = setInterval(() => playSlides(), props.interval);
}
const playSlides = () => {
if (!isFirstCall.value) {
isTransitioning.value = true;
}
isFirstCall.value = false;
if (activeIndex.value < items.value.length - 1) {
activeIndex.value = activeIndex.value + 1;
} else if (props.loop) {
activeIndex.value = 0;
} else {
isTransitioning.value = false;
}
};
function setActiveItem(index) {
if (!isFirstCall.value) {
isTransitioning.value = true;
}
isFirstCall.value = false;
if (shared.isString(index)) {
const filteredItems = items.value.filter((item) => item.props.name === index);
if (filteredItems.length > 0) {
index = items.value.indexOf(filteredItems[0]);
}
}
index = Number(index);
if (Number.isNaN(index) || index !== Math.floor(index)) {
error.debugWarn(componentName, "index must be integer.");
return;
}
const itemCount = items.value.length;
const oldIndex = activeIndex.value;
if (index < 0) {
activeIndex.value = props.loop ? itemCount - 1 : 0;
} else if (index >= itemCount) {
activeIndex.value = props.loop ? 0 : itemCount - 1;
} else {
activeIndex.value = index;
}
if (oldIndex === activeIndex.value) {
resetItemPosition(oldIndex);
}
resetTimer();
}
function resetItemPosition(oldIndex) {
items.value.forEach((item, index) => {
item.translateItem(index, activeIndex.value, oldIndex);
});
}
function itemInStage(item, index) {
var _a, _b, _c, _d;
const _items = vue.unref(items);
const itemCount = _items.length;
if (itemCount === 0 || !item.states.inStage)
return false;
const nextItemIndex = index + 1;
const prevItemIndex = index - 1;
const lastItemIndex = itemCount - 1;
const isLastItemActive = _items[lastItemIndex].states.active;
const isFirstItemActive = _items[0].states.active;
const isNextItemActive = (_b = (_a = _items[nextItemIndex]) == null ? void 0 : _a.states) == null ? void 0 : _b.active;
const isPrevItemActive = (_d = (_c = _items[prevItemIndex]) == null ? void 0 : _c.states) == null ? void 0 : _d.active;
if (index === lastItemIndex && isFirstItemActive || isNextItemActive) {
return "left";
} else if (index === 0 && isLastItemActive || isPrevItemActive) {
return "right";
}
return false;
}
function handleMouseEnter() {
hover.value = true;
if (props.pauseOnHover) {
pauseTimer();
}
}
function handleMouseLeave() {
hover.value = false;
startTimer();
}
function handleTransitionEnd() {
isTransitioning.value = false;
}
function handleButtonEnter(arrow) {
if (vue.unref(isVertical))
return;
items.value.forEach((item, index) => {
if (arrow === itemInStage(item, index)) {
item.states.hover = true;
}
});
}
function handleButtonLeave() {
if (vue.unref(isVertical))
return;
items.value.forEach((item) => {
item.states.hover = false;
});
}
function handleIndicatorClick(index) {
if (index !== activeIndex.value) {
if (!isFirstCall.value) {
isTransitioning.value = true;
}
}
activeIndex.value = index;
}
function handleIndicatorHover(index) {
if (props.trigger === "hover" && index !== activeIndex.value) {
activeIndex.value = index;
if (!isFirstCall.value) {
isTransitioning.value = true;
}
}
}
function prev() {
setActiveItem(activeIndex.value - 1);
}
function next() {
setActiveItem(activeIndex.value + 1);
}
function resetTimer() {
pauseTimer();
if (!props.pauseOnHover)
startTimer();
}
function setContainerHeight(height) {
if (props.height !== "auto")
return;
containerHeight.value = height;
}
function PlaceholderItem() {
var _a;
const defaultSlots = (_a = slots.default) == null ? void 0 : _a.call(slots);
if (!defaultSlots)
return null;
const flatSlots = vnode.flattedChildren(defaultSlots);
const normalizeSlots = flatSlots.filter((slot) => {
return vue.isVNode(slot) && slot.type.name === constants.CAROUSEL_ITEM_NAME;
});
if ((normalizeSlots == null ? void 0 : normalizeSlots.length) === 2 && props.loop && !isCardType.value) {
isItemsTwoLength.value = true;
return normalizeSlots;
}
isItemsTwoLength.value = false;
return null;
}
vue.watch(() => activeIndex.value, (current, prev2) => {
resetItemPosition(prev2);
if (isItemsTwoLength.value) {
current = current % 2;
prev2 = prev2 % 2;
}
if (prev2 > -1) {
emit(event.CHANGE_EVENT, current, prev2);
}
});
vue.watch(() => props.autoplay, (autoplay) => {
autoplay ? startTimer() : pauseTimer();
});
vue.watch(() => props.loop, () => {
setActiveItem(activeIndex.value);
});
vue.watch(() => props.interval, () => {
resetTimer();
});
const resizeObserver = vue.shallowRef();
vue.onMounted(() => {
vue.watch(() => items.value, () => {
if (items.value.length > 0)
setActiveItem(props.initialIndex);
}, {
immediate: true
});
resizeObserver.value = core.useResizeObserver(root.value, () => {
resetItemPosition();
});
startTimer();
});
vue.onBeforeUnmount(() => {
pauseTimer();
if (root.value && resizeObserver.value)
resizeObserver.value.stop();
});
vue.provide(constants.carouselContextKey, {
root,
isCardType,
isVertical,
items,
loop: props.loop,
cardScale: props.cardScale,
addItem,
removeItem,
setActiveItem,
setContainerHeight
});
return {
root,
activeIndex,
arrowDisplay,
hasLabel,
hover,
isCardType,
isTransitioning,
items,
isVertical,
containerStyle,
isItemsTwoLength,
handleButtonEnter,
handleTransitionEnd,
handleButtonLeave,
handleIndicatorClick,
handleMouseEnter,
handleMouseLeave,
setActiveItem,
prev,
next,
PlaceholderItem,
isTwoLengthShow,
throttledArrowClick,
throttledIndicatorHover
};
};
exports.useCarousel = useCarousel;
//# sourceMappingURL=use-carousel.js.map