<template>
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<view :class="classes">
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<view
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:id="'nut-menu__bar' + refRandomId"
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class="nut-menu__bar"
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:class="{ opened: opened, around }"
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ref="barRef"
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>
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<template v-for="(item, index) in children" :key="index">
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<view
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class="nut-menu__item"
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@click="!item.disabled && toggleItem(index)"
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:class="{ disabled: item.disabled, active: item.state.showPopup }"
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:style="{ color: item.state.showPopup ? activeColor : '' }"
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>
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<view class="nut-menu__title" :class="getClasses(item.state.showPopup)">
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<view class="nut-menu__title-text">{{ item.renderTitle() }}</view>
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<span class="nut-menu__title-icon">
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<slot name="icon">
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<TriangleUp v-if="direction === 'up'" :size="12" />
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<TriangleDown v-else :size="12" />
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</slot>
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</span>
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</view>
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</view>
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</template>
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</view>
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<slot></slot>
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</view>
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</template>
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<script lang="ts">
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import Taro, { usePageScroll } from '@tarojs/taro';
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import { RectUp, RectDown, TriangleDown, TriangleUp } from '@nutui/icons-vue-taro';
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import { useTaroRect } from 'senin-mini/hooks';
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import './menu.scss';
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const componentName = 'nut-menu';
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export default defineComponent({
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name: 'bl-menu',
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components: {
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RectDown,
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RectUp,
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TriangleDown,
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TriangleUp,
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},
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props: {
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activeColor: {
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type: String,
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default: '',
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},
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overlay: {
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type: Boolean,
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default: true as const,
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},
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lockScroll: {
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type: Boolean,
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default: true as const,
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},
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duration: {
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type: [Number, String],
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default: 0.3,
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},
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closeOnClickOverlay: {
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type: Boolean,
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default: true,
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},
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direction: {
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type: String,
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default: 'down',
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},
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scrollFixed: {
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type: [Boolean, String, Number],
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default: false,
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},
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titleClass: [String],
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around: {
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type: Boolean,
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default: false,
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},
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},
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setup(props) {
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const barRef = ref<HTMLElement>();
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const refRandomId = Math.random().toString(36).slice(-8);
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const offset = ref(0);
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const isScrollFixed = ref(false);
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const useChildren = () => {
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const publicChildren: any[] = reactive([]);
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const internalChildren: any[] = reactive([]);
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const linkChildren = (value?: any) => {
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const link = (child: any) => {
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if (child.proxy) {
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internalChildren.push(child);
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publicChildren.push(child.proxy as any);
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}
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};
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const removeLink = (child: any) => {
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if (child.proxy) {
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let internalIndex = internalChildren.indexOf(child);
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if (internalIndex > -1) {
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internalChildren.splice(internalIndex, 1);
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}
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let publicIndex = publicChildren.indexOf(child.proxy);
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if (internalIndex > -1) {
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publicChildren.splice(publicIndex, 1);
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}
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}
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};
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provide(
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'menuParent',
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Object.assign(
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{
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removeLink,
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link,
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children: publicChildren,
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internalChildren,
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},
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value
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)
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);
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};
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return {
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children: publicChildren,
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linkChildren,
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};
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};
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const { children, linkChildren } = useChildren();
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const opened = computed(() => children.some((item) => item.state.showWrapper));
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const classes = computed(() => {
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const prefixCls = componentName;
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return {
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[prefixCls]: true,
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'scroll-fixed': isScrollFixed.value,
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'bole-menu-wrapper': true,
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};
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});
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const updateOffset = (children: any) => {
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if (barRef.value) {
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setTimeout(() => {
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useTaroRect(barRef, Taro).then((rect: any) => {
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if (props.direction === 'down') {
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offset.value = rect.bottom;
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} else {
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offset.value = Taro.getSystemInfoSync().windowHeight - rect.top;
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}
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children.toggle();
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});
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}, 100);
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}
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};
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linkChildren({ props, offset });
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const toggleItem = (active: number) => {
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children.forEach((item, index) => {
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if (index === active) {
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updateOffset(item);
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} else if (item.state.showPopup) {
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item.toggle(false, { immediate: true });
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}
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});
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};
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const onScroll = (res: { scrollTop: number }) => {
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const { scrollFixed } = props;
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const scrollTop = res.scrollTop;
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isScrollFixed.value =
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scrollTop > (typeof scrollFixed === 'boolean' ? 30 : Number(scrollFixed));
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};
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const getClasses = (showPopup: boolean) => {
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let str = '';
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const { titleClass } = props;
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if (showPopup) {
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str += 'active';
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}
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if (titleClass) {
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str += ` ${titleClass}`;
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}
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return str;
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};
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usePageScroll((res) => {
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const { scrollFixed } = props;
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if (scrollFixed) {
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onScroll(res);
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}
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});
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return {
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toggleItem,
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children,
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opened,
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classes,
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barRef,
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refRandomId,
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getClasses,
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};
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},
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});
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</script>
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