wikijs-fork/client/themes/default/components/tabset.vue

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<template lang="pug">
.tabset.elevation-2
ul.tabset-tabs(ref='tabs', role='tablist')
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slot(name='tabs')
.tabset-content(ref='content')
slot(name='content')
</template>
<script>
import { customAlphabet } from 'nanoid/non-secure'
const nanoid = customAlphabet('1234567890abcdef', 10)
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export default {
data() {
return {
currentTab: 0
}
},
watch: {
currentTab (newValue, oldValue) {
this.setActiveTab()
}
},
methods: {
setActiveTab () {
this.$refs.tabs.childNodes.forEach((node, idx) => {
if (idx === this.currentTab) {
node.className = 'is-active'
node.setAttribute('aria-selected', 'true')
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} else {
node.className = ''
node.setAttribute('aria-selected', 'false')
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}
})
this.$refs.content.childNodes.forEach((node, idx) => {
if (idx === this.currentTab) {
node.className = 'tabset-panel is-active'
node.removeAttribute('hidden')
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} else {
node.className = 'tabset-panel'
node.setAttribute('hidden', '')
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}
})
}
},
mounted () {
// Handle scroll to header on load within hidden tab content
if (window.location.hash && window.location.hash.length > 1) {
const headerId = decodeURIComponent(window.location.hash)
let foundIdx = -1
this.$refs.content.childNodes.forEach((node, idx) => {
if (node.querySelector(headerId)) {
foundIdx = idx
}
})
if (foundIdx >= 0) {
this.currentTab = foundIdx
}
}
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this.setActiveTab()
const tabRefId = nanoid()
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this.$refs.tabs.childNodes.forEach((node, idx) => {
node.setAttribute('id', `${tabRefId}-${idx}`)
node.setAttribute('role', 'tab')
node.setAttribute('aria-controls', `${tabRefId}-${idx}-tab`)
node.setAttribute('tabindex', '0')
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node.addEventListener('click', ev => {
this.currentTab = [].indexOf.call(ev.target.parentNode.children, ev.target)
})
node.addEventListener('keydown', ev => {
if (ev.key === 'ArrowLeft' && idx > 0) {
this.currentTab = idx - 1
this.$refs.tabs.childNodes[idx - 1].focus()
} else if (ev.key === 'ArrowRight' && idx < this.$refs.tabs.childNodes.length - 1) {
this.currentTab = idx + 1
this.$refs.tabs.childNodes[idx + 1].focus()
} else if (ev.key === 'Enter' || ev.key === ' ') {
this.currentTab = idx
node.focus()
} else if (ev.key === 'Home') {
this.currentTab = 0
ev.preventDefault()
ev.target.parentNode.children[0].focus()
} else if (ev.key === 'End') {
this.currentTab = this.$refs.tabs.childNodes.length - 1
ev.preventDefault()
ev.target.parentNode.children[this.$refs.tabs.childNodes.length - 1].focus()
}
})
})
this.$refs.content.childNodes.forEach((node, idx) => {
node.setAttribute('id', `${tabRefId}-${idx}-tab`)
node.setAttribute('role', 'tabpanel')
node.setAttribute('aria-labelledby', `${tabRefId}-${idx}`)
node.setAttribute('tabindex', '0')
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})
}
}
</script>
<style lang="scss">
.tabset {
border-radius: 5px;
margin-top: 10px;
@at-root .theme--dark & {
background-color: #292929;
}
> .tabset-tabs {
padding-left: 0;
margin: 0;
display: flex;
align-items: stretch;
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background: linear-gradient(to bottom, #FFF, #FAFAFA);
box-shadow: inset 0 -1px 0 0 #DDD;
border-radius: 5px 5px 0 0;
overflow: auto;
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@at-root .theme--dark & {
background: linear-gradient(to bottom, #424242, #333);
box-shadow: inset 0 -1px 0 0 #555;
}
> li {
display: block;
padding: 16px;
margin-top: 0;
cursor: pointer;
transition: color 1s ease;
border-right: 1px solid #FFF;
font-size: 14px;
font-weight: 500;
margin-bottom: 1px;
user-select: none;
@at-root .theme--dark & {
border-right-color: #555;
}
&.is-active {
background-color: #FFF;
margin-bottom: 0;
padding-bottom: 17px;
padding-top: 13px;
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color: mc('blue', '700');
border-top: 3px solid mc('blue', '700');
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@at-root .theme--dark & {
background-color: #292929;
color: mc('blue', '300');
}
}
&:last-child {
border-right: none;
&.is-active {
border-right: 1px solid #EEE;
@at-root .theme--dark & {
border-right-color: #555;
}
}
}
&:hover {
background-color: rgba(#CCC, .1);
@at-root .theme--dark & {
background-color: rgba(#222, .25);
}
&.is-active {
background-color: #FFF;
@at-root .theme--dark & {
background-color: #292929;
}
}
}
& + li {
border-left: 1px solid #EEE;
@at-root .theme--dark & {
border-left-color: #222;
}
}
}
}
> .tabset-content {
.tabset-panel {
padding: 2px 16px 16px;
display: none;
&.is-active {
display: block;
}
}
}
}
</style>