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uni_modules/nutui-uni/components/swipe/swipe.vue

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+<script lang="ts" setup>
+import { computed, defineComponent, getCurrentInstance, inject, onMounted, reactive, ref, watch } from 'vue'
+import { CLICK_EVENT, PREFIX } from '../_constants'
+import { useRect, useTouch } from '../_hooks'
+import { getMainClass, getRandomId } from '../_utils'
+import { swipeEmits, swipeProps } from './swipe'
+import type { SwipeDirection, SwipePosition } from './types'
+
+const props = defineProps(swipeProps)
+
+const emit = defineEmits(swipeEmits)
+
+const instance = getCurrentInstance()!
+
+const parent = inject('swipeGroup', null) as any
+
+const classes = computed(() => {
+  return getMainClass(props, componentName)
+})
+
+const randomId = getRandomId()
+
+// eslint-disable-next-line ts/no-use-before-define
+const leftElId = `${componentName}-left-${randomId}`
+const leftElWidth = ref(0)
+
+// eslint-disable-next-line ts/no-use-before-define
+const rightElId = `${componentName}-right-${randomId}`
+const rightElWidth = ref(0)
+
+async function getElementWidth(elementId: string) {
+  const rect = await useRect(elementId, instance)
+
+  return rect.width || 0
+}
+
+async function initWidth() {
+  const [leftWidth, rightWidth] = await Promise.all([
+    getElementWidth(leftElId),
+    getElementWidth(rightElId),
+  ])
+
+  leftElWidth.value = leftWidth
+  rightElWidth.value = rightWidth
+}
+
+watch(() => parent?.name.value, (value) => {
+  if (props.name !== value && parent && parent.lock.value)
+    close()
+})
+
+const opened = ref(false)
+
+let direction: SwipeDirection = ''
+let oldDirection: SwipeDirection = ''
+
+const state = reactive({
+  offset: 0,
+  moving: false,
+})
+
+const innerStyles = computed(() => {
+  return {
+    transform: `translate3d(${state.offset}px, 0, 0)`,
+  }
+})
+
+function open(dir: SwipeDirection = '') {
+  parent && parent.update(props.name)
+
+  if (opened.value)
+    return
+
+  if (dir)
+    state.offset = dir === 'left' ? -rightElWidth.value : leftElWidth.value
+
+  opened.value = true
+
+  const finalDirection = direction || dir
+
+  emit('open', {
+    name: props.name!,
+    direction: finalDirection,
+    position: finalDirection,
+  })
+}
+
+function close() {
+  if (!opened.value)
+    return
+
+  state.offset = 0
+
+  opened.value = false
+
+  emit('close', {
+    name: props.name!,
+    direction,
+    position: direction,
+  })
+}
+
+function handleClick(position: SwipePosition) {
+  if (props.closeOnClick.includes(position))
+    close()
+
+  emit(CLICK_EVENT, position)
+}
+
+function updateOffset(deltaX: number) {
+  direction = deltaX > 0 ? 'right' : 'left'
+
+  let offset = deltaX
+  switch (direction) {
+    case 'left': {
+      if (opened.value && oldDirection === direction)
+        offset = -rightElWidth.value
+      else
+        offset = Math.abs(deltaX) > rightElWidth.value ? -rightElWidth.value : deltaX
+      break
+    }
+    case 'right': {
+      if (opened.value && oldDirection === direction)
+        offset = leftElWidth.value
+      else
+        offset = Math.abs(deltaX) > leftElWidth.value ? leftElWidth.value : deltaX
+      break
+    }
+  }
+
+  state.offset = offset
+}
+
+const touch = useTouch()
+
+function onTouchStart(event: any) {
+  if (props.disabled)
+    return
+
+  touch.start(event)
+}
+
+async function onTouchMove(event: any) {
+  if (props.disabled)
+    return
+
+  touch.move(event)
+
+  if (touch.isHorizontal()) {
+    state.moving = true
+
+    updateOffset(touch.deltaX.value)
+
+    if (props.touchMovePreventDefault)
+      event.preventDefault()
+
+    if (props.touchMoveStopPropagation)
+      event.stopPropagation()
+  }
+}
+
+function onTouchEnd() {
+  if (!state.moving)
+    return
+
+  state.moving = false
+
+  oldDirection = direction
+  switch (direction) {
+    case 'left': {
+      if (Math.abs(state.offset) <= rightElWidth.value / 2) {
+        close()
+      }
+      else {
+        state.offset = -rightElWidth.value
+        open()
+      }
+      break
+    }
+    case 'right': {
+      if (Math.abs(state.offset) <= leftElWidth.value / 2) {
+        close()
+      }
+      else {
+        state.offset = leftElWidth.value
+        open()
+      }
+      break
+    }
+  }
+}
+
+onMounted(() => {
+  setTimeout(() => {
+    initWidth()
+  }, 100)
+})
+
+defineExpose({
+  open,
+  close,
+})
+</script>
+
+<script lang="ts">
+const componentName = `${PREFIX}-swipe`
+
+export default defineComponent({
+  name: componentName,
+  options: {
+    virtualHost: true,
+    addGlobalClass: true,
+    // #ifndef H5
+    styleIsolation: 'shared',
+    // #endif
+  },
+})
+</script>
+
+<template>
+  <view :class="classes" :style="props.customStyle">
+    <view
+      class="nut-swipe__inner"
+      :style="innerStyles"
+      @touchstart="onTouchStart"
+      @touchmove="onTouchMove"
+      @touchend="onTouchEnd"
+      @touchcancel="onTouchEnd"
+    >
+      <view :id="leftElId" class="nut-swipe__left" @click="handleClick('left')">
+        <slot name="left" />
+      </view>
+
+      <view class="nut-swipe__content" @click="handleClick('content')">
+        <slot name="default" />
+      </view>
+
+      <view :id="rightElId" class="nut-swipe__right" @click="handleClick('right')">
+        <slot name="right" />
+      </view>
+    </view>
+  </view>
+</template>
+
+<style lang="scss">
+@import "./index";
+</style>