添加树结构组件

This commit is contained in:
zqm
2026-02-02 13:46:36 +08:00
parent 55ea9d72c5
commit fc089395c9
7 changed files with 976 additions and 5 deletions

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<template>
<div class="cube-tree-item" :style="{ marginLeft: `${depth * config.indentSize}px` }">
<div
class="cube-tree-item-header"
@click="handleClick"
:class="{
'has-children': hasChildren,
'selected': selected,
'expanded': item.expanded,
'in-path': inPath
}"
>
<span v-if="config.showExpandIcon && hasChildren" class="expand-icon">
{{ item.expanded ? '' : '' }}
</span>
<span v-else class="expand-icon placeholder-icon"></span>
<slot name="icon" :item="item">
<span class="item-icon">{{ computedIcon }}</span>
</slot>
<slot name="prefix" :item="item">
<span v-if="config.showLevel && item.level" class="level-prefix">
{{ config.levelPrefix }}{{ item.level }}
</span>
</slot>
<slot name="title" :item="item">
<span class="item-title">{{ item.title }}</span>
</slot>
<slot name="suffix" :item="item"></slot>
</div>
<transition name="expand">
<div v-if="item.expanded && hasChildren" class="cube-tree-children">
<CubeTreeItem
v-for="child in item.children"
:key="child.id"
:item="child"
:depth="depth + 1"
:selected="selectedId === child.id"
:selected-id="selectedId"
:config="config"
:icon-map="iconMap"
:in-path="isInPath(child.id)"
@node-click="emit('node-click', $event)"
@toggle-expand="emit('toggle-expand', $event)"
>
<template #icon="{ item }">
<slot name="icon" :item="item"></slot>
</template>
<template #title="{ item }">
<slot name="title" :item="item"></slot>
</template>
<template #prefix="{ item }">
<slot name="prefix" :item="item"></slot>
</template>
<template #suffix="{ item }">
<slot name="suffix" :item="item"></slot>
</template>
</CubeTreeItem>
</div>
</transition>
</div>
</template>
<script setup>
import { computed } from 'vue'
const props = defineProps({
item: Object,
depth: { type: Number, default: 0 },
selected: { type: Boolean, default: false },
selectedId: { type: String, default: '' },
config: {
type: Object,
default: () => ({
indentSize: 16,
showExpandIcon: true,
iconType: 'custom',
showLevel: false,
levelPrefix: 'H',
expandable: true
})
},
iconMap: Object,
inPath: { type: Boolean, default: false }
})
const emit = defineEmits(['node-click', 'toggle-expand'])
const hasChildren = computed(() =>
props.item.children && props.item.children.length > 0
)
const computedIcon = computed(() => {
const iconType = props.config.iconType
const userIconMap = props.iconMap
const defaultFileIconMap = {
'md': '📖',
'txt': '📝',
'pdf': '📚',
'png': '🖼️',
'jpg': '🖼️',
'jpeg': '🖼️',
'gif': '🎞️',
'svg': '📐',
'json': '🔧',
'yaml': '🔧',
'yml': '🔧',
'default': '📚',
'folder': '📁'
}
const defaultHeadingIconMap = {
1: '📌',
2: '📎',
3: '📏',
4: '📐',
5: '🔹',
6: '🔸',
'default': '📄'
}
if (iconType === 'file') {
const effectiveIconMap = userIconMap || defaultFileIconMap
if (hasChildren.value) {
return effectiveIconMap.folder || '📁'
}
if (props.item.id) {
const ext = props.item.id.split('.').pop()?.toLowerCase()
return effectiveIconMap[ext] || effectiveIconMap.default || '📄'
}
return effectiveIconMap.default || '📄'
} else if (iconType === 'heading') {
const effectiveIconMap = userIconMap || defaultHeadingIconMap
const level = props.item.level
if (level && effectiveIconMap[level]) {
return effectiveIconMap[level]
}
return effectiveIconMap.default || '📄'
}
return hasChildren.value ? '📁' : '📄'
})
const isInPath = (childId) => {
if (!props.inPath) return false
return props.selectedId === childId
}
const handleClick = () => {
if (hasChildren.value && props.config.expandable) {
emit('toggle-expand', props.item.id)
} else {
emit('node-click', props.item)
}
}
</script>
<style scoped>
.cube-tree-item {
margin-bottom: 2px;
}
.cube-tree-item-header {
display: flex;
align-items: center;
padding: 6px 8px;
cursor: pointer;
border-radius: 4px;
transition: background-color 0.2s;
font-size: 14px;
}
.cube-tree-item-header:hover {
background-color: var(--cube-tree-item-hover-bg, rgba(0, 0, 0, 0.05));
}
.cube-tree-item-header.selected {
background-color: var(--cube-tree-item-selected-bg, #1890ff);
color: var(--cube-tree-item-selected-color, #ffffff);
font-weight: 500;
}
.cube-tree-item-header.in-path {
background-color: var(--cube-tree-item-path-bg, rgba(24, 144, 255, 0.1));
}
.cube-tree-item-header.in-path.selected {
background-color: var(--cube-tree-item-selected-bg, #1890ff);
}
.expand-icon {
margin-right: 6px;
font-size: 12px;
color: var(--cube-tree-item-icon-color, rgba(0, 0, 0, 0.45));
width: 16px;
display: inline-block;
text-align: center;
transition: transform 0.2s;
}
.cube-tree-item-header.selected .expand-icon {
color: var(--cube-tree-item-selected-color, #ffffff);
}
.placeholder-icon {
visibility: hidden;
}
.item-icon {
margin-right: 6px;
font-size: 16px;
}
.level-prefix {
margin-right: 6px;
font-size: 12px;
color: var(--cube-tree-item-level-color, rgba(0, 0, 0, 0.45));
font-weight: 600;
}
.cube-tree-item-header.selected .level-prefix {
color: var(--cube-tree-item-selected-color, #ffffff);
}
.item-title {
flex: 1;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
color: var(--cube-tree-item-title-color, inherit);
}
.cube-tree-children {
margin-top: 2px;
}
.expand-enter-active,
.expand-leave-active {
transition: all 0.3s ease;
overflow: hidden;
}
.expand-enter-from,
.expand-leave-to {
max-height: 0;
opacity: 0;
}
.expand-enter-to,
.expand-leave-from {
max-height: 1000px;
opacity: 1;
}
</style>

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<template>
<div class="cube-tree-view" @keydown="handleKeydown" tabindex="0">
<CubeTreeItem
v-for="item in data"
:key="item.id"
:item="item"
:depth="0"
:selected="selectedId === item.id"
:selected-id="selectedId"
:config="config"
:icon-map="iconMap"
:in-path="isInPath(item.id)"
@node-click="handleNodeClick"
@toggle-expand="handleToggleExpand"
>
<template #icon="{ item }">
<slot name="icon" :item="item"></slot>
</template>
<template #title="{ item }">
<slot name="title" :item="item"></slot>
</template>
<template #prefix="{ item }">
<slot name="prefix" :item="item"></slot>
</template>
<template #suffix="{ item }">
<slot name="suffix" :item="item"></slot>
</template>
</CubeTreeItem>
</div>
</template>
<script setup>
import { ref, watch } from 'vue'
import CubeTreeItem from './CubeTreeItem.vue'
const props = defineProps({
data: { type: Array, default: () => [] },
selectedId: { type: String, default: '' },
config: {
type: Object,
default: () => ({
defaultExpandAll: false,
showExpandIcon: true,
indentSize: 16,
expandable: true,
iconType: 'custom',
showLevel: false,
levelPrefix: 'H',
levelKey: 'level',
autoExpand: false,
highlightPath: false
})
},
iconMap: Object
})
const emit = defineEmits(['node-click', 'toggle-expand'])
const treeViewRef = ref(null)
const pathNodes = ref(new Set())
const handleNodeClick = (item) => {
emit('node-click', item)
}
const handleToggleExpand = (itemId) => {
emit('toggle-expand', itemId)
}
const handleKeydown = (e) => {
const items = getAllNodes(props.data)
const currentIndex = items.findIndex(item => item.id === props.selectedId)
switch (e.key) {
case 'ArrowUp':
e.preventDefault()
if (currentIndex > 0) {
selectNode(items[currentIndex - 1].id)
}
break
case 'ArrowDown':
e.preventDefault()
if (currentIndex < items.length - 1) {
selectNode(items[currentIndex + 1].id)
}
break
case 'ArrowLeft':
e.preventDefault()
if (currentIndex >= 0) {
const currentItem = items[currentIndex]
if (currentItem.expanded && hasChildren(currentItem)) {
collapseNode(currentItem.id)
} else {
const parent = findParent(currentItem.id)
if (parent) {
selectNode(parent.id)
}
}
}
break
case 'ArrowRight':
e.preventDefault()
if (currentIndex >= 0) {
const currentItem = items[currentIndex]
if (hasChildren(currentItem)) {
if (!currentItem.expanded) {
expandNode(currentItem.id)
} else {
const firstChild = currentItem.children[0]
if (firstChild) {
selectNode(firstChild.id)
}
}
}
}
break
case 'Enter':
case ' ':
e.preventDefault()
if (currentIndex >= 0) {
handleNodeClick(items[currentIndex])
}
break
}
}
const getAllNodes = (nodes, result = []) => {
nodes.forEach(node => {
result.push(node)
if (node.children && node.children.length > 0) {
getAllNodes(node.children, result)
}
})
return result
}
const hasChildren = (node) => {
return node.children && node.children.length > 0
}
const findParent = (id, nodes = props.data, parent = null) => {
for (const node of nodes) {
if (node.id === id) {
return parent
}
if (node.children) {
const found = findParent(id, node.children, node)
if (found) return found
}
}
return null
}
const expandAll = () => {
const expand = (nodes) => {
nodes.forEach(node => {
if (node.children && node.children.length > 0) {
node.expanded = true
expand(node.children)
}
})
}
expand(props.data)
}
const collapseAll = () => {
const collapse = (nodes) => {
nodes.forEach(node => {
if (node.children && node.children.length > 0) {
node.expanded = false
collapse(node.children)
}
})
}
collapse(props.data)
}
const expandNode = (id) => {
const findAndExpand = (nodes) => {
for (const node of nodes) {
if (node.id === id) {
node.expanded = true
return true
}
if (node.children && findAndExpand(node.children)) {
return true
}
}
return false
}
findAndExpand(props.data)
}
const collapseNode = (id) => {
const findAndCollapse = (nodes) => {
for (const node of nodes) {
if (node.id === id) {
node.expanded = false
return true
}
if (node.children && findAndCollapse(node.children)) {
return true
}
}
return false
}
findAndCollapse(props.data)
}
const toggleNode = (id) => {
const findAndToggle = (nodes) => {
for (const node of nodes) {
if (node.id === id) {
node.expanded = !node.expanded
return true
}
if (node.children && findAndToggle(node.children)) {
return true
}
}
return false
}
findAndToggle(props.data)
}
const expandPath = (id) => {
const path = []
const findPath = (nodes, currentPath = []) => {
for (const node of nodes) {
const newPath = [...currentPath, node]
if (node.id === id) {
path.push(...newPath)
return true
}
if (node.children && findPath(node.children, newPath)) {
return true
}
}
return false
}
findPath(props.data)
path.forEach(node => {
if (node.children && node.children.length > 0) {
node.expanded = true
}
})
}
const collapsePath = (id) => {
const path = []
const findPath = (nodes, currentPath = []) => {
for (const node of nodes) {
const newPath = [...currentPath, node]
if (node.id === id) {
path.push(...newPath)
return true
}
if (node.children && findPath(node.children, newPath)) {
return true
}
}
return false
}
findPath(props.data)
path.forEach(node => {
if (node.children && node.children.length > 0) {
node.expanded = false
}
})
}
const getNodeById = (id, nodes = props.data) => {
for (const node of nodes) {
if (node.id === id) {
return node
}
if (node.children) {
const found = getNodeById(id, node.children)
if (found) return found
}
}
return null
}
const getSelectedNode = () => {
if (!props.selectedId) return null
return getNodeById(props.selectedId)
}
const selectNode = (id) => {
const node = getNodeById(id)
if (node) {
if (props.config.autoExpand) {
expandPath(id)
}
emit('node-click', node)
}
}
const isInPath = (id) => {
if (!props.config.highlightPath || !props.selectedId) return false
return pathNodes.value.has(id)
}
const updatePathNodes = () => {
if (!props.config.highlightPath || !props.selectedId) {
pathNodes.value.clear()
return
}
const path = []
const findPath = (nodes, currentPath = []) => {
for (const node of nodes) {
const newPath = [...currentPath, node]
if (node.id === props.selectedId) {
path.push(...newPath)
return true
}
if (node.children && findPath(node.children, newPath)) {
return true
}
}
return false
}
findPath(props.data)
pathNodes.value = new Set(path.map(node => node.id))
}
watch(() => props.selectedId, () => {
updatePathNodes()
if (props.config.autoExpand && props.selectedId) {
expandPath(props.selectedId)
}
}, { immediate: true })
watch(() => props.data, () => {
updatePathNodes()
if (props.config.defaultExpandAll) {
expandAll()
}
}, { immediate: true })
defineExpose({
expandAll,
collapseAll,
expandNode,
collapseNode,
toggleNode,
expandPath,
collapsePath,
getNodeById,
getSelectedNode,
selectNode
})
</script>
<style scoped>
.cube-tree-view {
outline: none;
user-select: none;
}
.cube-tree-view:focus {
outline: none;
}
</style>

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export class TreeDataConverter {
static fromBackend(backendData, options = {}) {
const {
parentPath = '',
removeExtension = true,
defaultExpanded = false
} = options
return backendData.map(item => {
const fullPath = parentPath ? `${parentPath}/${item.name}` : item.name
const title = removeExtension && item.name.endsWith('.md')
? item.name.slice(0, -3)
: item.name
return {
id: fullPath,
title: title,
expanded: defaultExpanded || item.is_directory,
children: item.children
? this.fromBackend(item.children, {
parentPath: fullPath,
removeExtension,
defaultExpanded
})
: undefined
}
})
}
static fromFlatArray(flatData, options = {}) {
const {
levelKey = 'level',
defaultExpanded = true
} = options
if (!Array.isArray(flatData) || flatData.length === 0) {
return []
}
const result = []
const path = []
flatData.forEach(item => {
const currentLevel = item[levelKey]
while (path.length > 0 && path[path.length - 1].level >= currentLevel) {
path.pop()
}
const treeNode = {
...item,
expanded: defaultExpanded,
children: [],
level: currentLevel
}
if (path.length === 0) {
result.push(treeNode)
} else {
path[path.length - 1].children.push(treeNode)
}
path.push(treeNode)
})
return result
}
static validate(data) {
const errors = []
if (!Array.isArray(data)) {
errors.push('数据必须是数组')
return { valid: false, errors }
}
const validateNode = (node, path = '') => {
if (!node.id) {
errors.push(`节点缺少id字段: ${path}`)
}
if (!node.title) {
errors.push(`节点缺少title字段: ${path}`)
}
if (node.children && !Array.isArray(node.children)) {
errors.push(`节点的children必须是数组: ${path}`)
}
if (node.children) {
node.children.forEach((child, index) => {
validateNode(child, `${path}/${node.title}[${index}]`)
})
}
}
data.forEach((node, index) => {
validateNode(node, `[${index}]`)
})
return {
valid: errors.length === 0,
errors
}
}
}