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<template>
<ul
v-if="items.length"
class="sidebar-links"
>
<li
v-for="(item, i) in items"
:key="i"
>
<SidebarGroup
v-if="item.type === 'group'"
:item="item"
:open="i === openGroupIndex"
:collapsable="item.collapsable || item.collapsible"
:depth="depth"
@toggle="toggleGroup(i)"
/>
<SidebarLink
v-else
:sidebar-depth="sidebarDepth"
:item="item"
/>
</li>
</ul>
</template>
<script>
import SidebarGroup from '@theme/components/SidebarGroup.vue'
import SidebarLink from '@theme/components/SidebarLink.vue'
import { isActive } from '../util'
export default {
name: 'SidebarLinks',
components: { SidebarGroup, SidebarLink },
props: [
'items',
'depth', // depth of current sidebar links
'sidebarDepth', // depth of headers to be extracted
'initialOpenGroupIndex'
],
data () {
return {
openGroupIndex: this.initialOpenGroupIndex || 0
}
},
watch: {
'$route' () {
this.refreshIndex()
}
},
created () {
this.refreshIndex()
},
methods: {
refreshIndex () {
const index = resolveOpenGroupIndex(
this.$route,
this.items
)
if (index > -1) {
this.openGroupIndex = index
}
},
toggleGroup (index) {
this.openGroupIndex = index === this.openGroupIndex ? -1 : index
},
isActive (page) {
return isActive(this.$route, page.regularPath)
}
}
}
function resolveOpenGroupIndex (route, items) {
for (let i = 0; i < items.length; i++) {
const item = items[i]
if (descendantIsActive(route, item)) {
return i
}
}
return -1
}
function descendantIsActive (route, item) {
if (item.type === 'group') {
const childIsActive = item.path && isActive(route, item.path)
const grandChildIsActive = item.children.some(child => {
if (child.type === 'group') {
return descendantIsActive(route, child)
} else {
return child.type === 'page' && isActive(route, child.path)
}
})
return childIsActive || grandChildIsActive
}
return false
}
</script>
|
