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Commit ebacbbb9 by dhb52
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perf: mp/menu使用vuedraggable替换拖动的原生实现

parent 08eb72e5
Showing with 55 additions and 39 deletions
src/views/mp/menu/components/MenuPreviewer.vue
<template> <template>
<div class="menu_bottom" v-for="(parent, x) of menuList" :key="x"> <draggable
v-model="menuList"
item-key="id"
ghost-class="draggable-ghost"
:animation="400"
@end="onDragEnd"
>
<template #item="{ element: parent, index: x }">
<div class="menu_bottom">
<!-- 一级菜单 --> <!-- 一级菜单 -->
<div <div
@click="menuClicked(parent, x)" @click="menuClicked(parent, x)"
class="menu_item" class="menu_item"
draggable="true"
@dragstart="onDragStart(DragType.Parent, x)"
@dragenter.prevent="onDragEnter(DragType.Parent, x)"
:class="{ active: props.activeIndex === `${x}` }" :class="{ active: props.activeIndex === `${x}` }"
> >
<Icon icon="ep:fold" color="black" />{{ parent.name }} <Icon icon="ep:fold" color="black" />{{ parent.name }}
</div> </div>
<!-- 以下为二级菜单--> <!-- 以下为二级菜单-->
<div class="submenu" v-if="parentIndex === x && parent.children"> <div class="submenu" v-if="props.parentIndex === x && parent.children">
<div class="subtitle menu_bottom" v-for="(child, y) in parent.children" :key="y"> <draggable
v-model="parent.children"
item-key="id"
ghost-class="draggable-ghost"
:animation="400"
>
<template #item="{ element: child, index: y }">
<div class="subtitle menu_bottom">
<div <div
class="menu_subItem" class="menu_subItem"
draggable="true"
@dragstart="onDragStart(DragType.Child, y)"
@dragenter.prevent="onDragEnter(DragType.Child, x, y)"
v-if="parent.children" v-if="parent.children"
:class="{ active: props.activeIndex === `${x}-${y}` }" :class="{ active: props.activeIndex === `${x}-${y}` }"
@click="subMenuClicked(child, x, y)" @click="subMenuClicked(child, x, y)"
...@@ -26,6 +35,8 @@ ...@@ -26,6 +35,8 @@
{{ child.name }} {{ child.name }}
</div> </div>
</div> </div>
</template>
</draggable>
<!-- 二级菜单加号， 当长度 小于 5 才显示二级菜单的加号 --> <!-- 二级菜单加号， 当长度 小于 5 才显示二级菜单的加号 -->
<div <div
class="menu_bottom menu_addicon" class="menu_bottom menu_addicon"
...@@ -36,6 +47,9 @@ ...@@ -36,6 +47,9 @@
</div> </div>
</div> </div>
</div> </div>
</template>
</draggable>
<!-- 一级菜单加号 --> <!-- 一级菜单加号 -->
<div class="menu_bottom menu_addicon" v-if="menuList.length < 3" @click="addMenu"> <div class="menu_bottom menu_addicon" v-if="menuList.length < 3" @click="addMenu">
<Icon icon="ep:plus" class="plus" /> <Icon icon="ep:plus" class="plus" />
...@@ -44,6 +58,7 @@ ...@@ -44,6 +58,7 @@
<script setup lang="ts"> <script setup lang="ts">
import { Menu } from './types' import { Menu } from './types'
import draggable from 'vuedraggable'
const props = defineProps<{ const props = defineProps<{
modelValue: Menu[] modelValue: Menu[]
...@@ -97,46 +112,41 @@ const addSubMenu = (i: number, parent: any) => { ...@@ -97,46 +112,41 @@ const addSubMenu = (i: number, parent: any) => {
const menuClicked = (parent: Menu, x: number) => { const menuClicked = (parent: Menu, x: number) => {
emit('menu-clicked', parent, x) emit('menu-clicked', parent, x)
} }
const subMenuClicked = (child: Menu, x: number, y: number) => { const subMenuClicked = (child: Menu, x: number, y: number) => {
emit('submenu-clicked', child, x, y) emit('submenu-clicked', child, x, y)
} }
// ======================== 菜单排序 ========================
const dragIndex = ref<number>(0)
enum DragType {
Parent = 'parent',
Child = 'child'
}
const dragType = ref<DragType>()
/** /**
* 菜单开始拖动回调，记录被拖动菜单的信息（类型,下标） * 处理一级菜单展开后被拖动
* *
* @param type DragType, 拖动类型，父节点、子节点 * @param oldIndex: 一级菜单拖动前的位置
* @param index number, 被拖动的菜单下标 * @param newIndex: 一级菜单拖动后的位置
*/ */
const onDragStart = (type: DragType, index: number) => { const onDragEnd = ({ oldIndex, newIndex }) => {
dragIndex.value = index // 二级菜单没有展开，直接返回
dragType.value = type if (props.activeIndex === '__MENU_NOT_SELECTED__') {
} return
}
/** let newParent = props.parentIndex
* 拖动其他菜单位置回调, 判断【被拖动】及【被替换位置】的两个菜单是否同个类型，同类型才会进行插入 if (props.parentIndex === oldIndex) {
* newParent = newIndex
* @param type: DragType, 拖动类型，父节点、子节点 } else if (props.parentIndex === newIndex) {
* @param x number, 准备替换父节点位置的下标 newParent = oldIndex
* @param y number, 准备替换子节点位置的下标, 父节点拖动时可选
*/
const onDragEnter = (type: DragType, x: number, y = -1) => {
if (dragIndex.value !== x && dragType.value === type) {
if (type === DragType.Parent) {
const source = menuList.value.splice(dragIndex.value, 1)
menuList.value.splice(x, 0, ...source)
} else { } else {
const source = menuList.value[x].children?.splice(dragIndex.value, 1) // 如果展开的二级菜单下标`props.parentIndex`不是被移动的菜单的前后下标。
menuList.value[x].children?.splice(y, 0, ...(source as any)) // 那么使用一个辅助素组来模拟菜单移动，然后找到展开的二级菜单的新下标`newParent`
} let positions = new Array<boolean>(menuList.value.length).fill(false)
positions[props.parentIndex] = true
positions.splice(oldIndex, 1)
positions.splice(newIndex, 0, true)
newParent = positions.indexOf(true)
} }
// 找到菜单元素，触发一级菜单点击
const parent = menuList.value[newParent]
emit('menu-clicked', parent, newParent)
} }
</script> </script>
...@@ -199,4 +209,10 @@ const onDragEnter = (type: DragType, x: number, y = -1) => { ...@@ -199,4 +209,10 @@ const onDragEnter = (type: DragType, x: number, y = -1) => {
box-sizing: border-box; box-sizing: border-box;
} }
} }
.draggable-ghost {
opacity: 0.5;
background: #f7fafc;
border: 1px solid #4299e1;
}
</style> </style>
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