vuetify eingebunden + erster Versuch Combobox

node_modules/vuetify/src/components/VItemGroup/VItem.ts

@@ -0,0 +1,56 @@
+// Mixins
+import { factory as GroupableFactory } from '../../mixins/groupable'
+
+// Utilities
+import mixins from '../../util/mixins'
+import { consoleWarn } from '../../util/console'
+
+// Types
+import { VNode, ScopedSlotChildren } from 'vue/types/vnode'
+
+export default mixins(
+  GroupableFactory('itemGroup', 'v-item', 'v-item-group')
+  /* @vue/component */
+).extend({
+  name: 'v-item',
+
+  props: {
+    value: {
+      required: false
+    }
+  },
+
+  render (): VNode {
+    if (!this.$scopedSlots.default) {
+      consoleWarn('v-item is missing a default scopedSlot', this)
+
+      return null as any
+    }
+
+    let element: VNode | ScopedSlotChildren
+
+    /* istanbul ignore else */
+    if (this.$scopedSlots.default) {
+      element = this.$scopedSlots.default({
+        active: this.isActive,
+        toggle: this.toggle
+      })
+    }
+
+    if (Array.isArray(element) && element.length === 1) {
+      element = element[0]
+    }
+
+    if (!element || Array.isArray(element) || !element.tag) {
+      consoleWarn('v-item should only contain a single element', this)
+
+      return element as any
+    }
+
+    element.data = this._b(element.data || {}, element.tag!, {
+      class: { [this.activeClass]: this.isActive }
+    })
+
+    return element
+  }
+})