Fix type on Tabs component Vue (#912)

* add `tabs` example to Vue

* use useResolveButtonType for Tabs

* update changelog

CHANGELOG.md

@@ -22,6 +22,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Allow to click on elements inside a `DialogOverlay` ([#816](https://github.com/tailwindlabs/headlessui/pull/816))
 - Fix SSR crash because of `useWindowEvent` ([#817](https://github.com/tailwindlabs/headlessui/pull/817))
 - Improve tree shaking ([#859](https://github.com/tailwindlabs/headlessui/pull/859))
+- Add `type="button"` to `Tabs` component ([#912](https://github.com/tailwindlabs/headlessui/pull/912))
 
 ## [@headlessui/react@v1.4.1] - 2021-08-30
 

packages/@headlessui-vue/examples/src/components/tabs/tabs.vue

@@ -0,0 +1,81 @@
+<template>
+  <div class="flex flex-col items-start w-screen h-full p-12 bg-gray-50 space-y-12">
+    <SwitchGroup as="div" class="flex items-center space-x-4">
+      <SwitchLabel>Manual keyboard activation</SwitchLabel>
+
+      <Switch as="button" v-model="manual" :className="resolveSwitchClass" v-slot="{ checked }">
+        <span
+          class="inline-block w-5 h-5 transition duration-200 ease-in-out transform bg-white rounded-full"
+          :class="{ 'translate-x-5': checked, 'translate-x-0': !checked }"
+        />
+      </Switch>
+    </SwitchGroup>
+
+    <TabGroup class="flex flex-col max-w-3xl w-full" as="div" :manual="manual">
+      <TabList class="relative z-0 rounded-lg shadow flex divide-x divide-gray-200">
+        <Tab
+          v-for="(tab, tabIdx) in tabs"
+          key="tab.name"
+          :disabled="tab.disabled"
+          class="group relative min-w-0 flex-1 overflow-hidden bg-white py-4 px-4 text-sm font-medium text-center hover:bg-gray-50 focus:z-10"
+          :class="{
+            'text-gray-900': selected,
+            'text-gray-500 hover:text-gray-700': !selected,
+            'rounded-l-lg': tabIdx === 0,
+            'rounded-r-lg': tabIdx === tabs.length - 1,
+            'opacity-50': tab.disabled,
+          }"
+          v-slot="{ selected }"
+        >
+          <span>{{tab.name}}</span>
+          <small v-if="tab.disabled" class="inline-block px-4 text-xs">(disabled)</small>
+          <span
+            aria-hidden="true"
+            class="absolute inset-x-0 bottom-0 h-0.5"
+            :class="{'bg-indigo-500': selected, 'bg-transparent':!selected}"
+          />
+        </Tab>
+      </TabList>
+
+      <TabPanels class="mt-4">
+        <TabPanel v-for="tab in tabs" class="bg-white rounded-lg p-4 shadow" key="tab.name">
+          {{tab.content}}
+        </TabPanel>
+      </TabPanels>
+    </TabGroup>
+  </div>
+</template>
+
+<script>
+import { defineComponent, h, ref, onMounted, watchEffect, watch } from 'vue'
+import { SwitchGroup, Switch, SwitchLabel, TabGroup, TabList, Tab, TabPanels, TabPanel } from '@headlessui/vue'
+
+function classNames(...classes) {
+  return classes.filter(Boolean).join(' ')
+}
+
+let tabs = [
+  { name: 'My Account', content: 'Tab content for my account' },
+  { name: 'Company', content: 'Tab content for company', disabled: true },
+  { name: 'Team Members', content: 'Tab content for team members' },
+  { name: 'Billing', content: 'Tab content for billing' },
+]
+
+export default {
+  components: { SwitchGroup, Switch, SwitchLabel, TabGroup, TabList, Tab, TabPanels, TabPanel },
+  setup(props, context) {
+    let manual = ref(false)
+
+    return {
+      tabs: ref(tabs),
+      manual,
+      resolveSwitchClass({ checked }) {
+        return classNames(
+          'relative inline-flex flex-shrink-0 h-6 transition-colors duration-200 ease-in-out border-2 border-transparent rounded-full cursor-pointer w-11 focus:outline-none focus:shadow-outline',
+          checked ? 'bg-indigo-600' : 'bg-gray-200'
+        )
+      },
+    }
+  },
+}
+</script>

packages/@headlessui-vue/examples/src/routes.json

@@ -61,6 +61,17 @@
       }
     ]
   },
+  {
+    "name": "Tabs",
+    "path": "/tabs",
+    "children": [
+      {
+        "name": "Tabs (basic)",
+        "path": "/tabs/tabs",
+        "component": "./components/tabs/tabs.vue"
+      }
+    ]
+  },
   {
     "name": "Focus Trap",
     "path": "/focus-trap",

packages/@headlessui-vue/src/components/tabs/tabs.ts

@@ -16,6 +16,7 @@ import { Keys } from '../../keyboard'
 import { dom } from '../../utils/dom'
 import { match } from '../../utils/match'
 import { focusIn, Focus } from '../../utils/focus-management'
+import { useResolveButtonType } from '../../hooks/use-resolve-button-type'
 
 type StateDefinition = {
   // State
@@ -217,7 +218,6 @@ export let Tab = defineComponent({
 
     let myIndex = computed(() => api.tabs.value.indexOf(tabRef))
     let selected = computed(() => myIndex.value === api.selectedIndex.value)
-    let type = computed(() => attrs.type ?? (props.as === 'button' ? 'button' : undefined))
 
     function handleKeyDown(event: KeyboardEvent) {
       let list = api.tabs.value.map(tab => dom(tab)).filter(Boolean) as HTMLElement[]
@@ -276,7 +276,10 @@ export let Tab = defineComponent({
       id,
       selected,
       myIndex,
-      type,
+      type: useResolveButtonType(
+        computed(() => ({ as: props.as, type: attrs.type })),
+        tabRef
+      ),
       handleKeyDown,
       handleFocus,
       handleSelection,