Create generic menu to copy data from a different validity range

aleksis/apps/lesrooster/frontend/components/validity_range/CopyFromRangeMenu.vue

+<script>
+import {defineComponent} from 'vue'
+import ConfirmDialog from "aleksis.core/components/generic/dialogs/ConfirmDialog.vue";
+import PrimaryActionButton from "aleksis.core/components/generic/buttons/PrimaryActionButton.vue";
+
+export default defineComponent({
+  name: "CopyFromRangeMenu",
+  components: {ConfirmDialog, PrimaryActionButton},
+  computed: {
+    ranges() {
+      return []; // FIXME: Get ranges from backend
+    },
+  },
+  data() {
+    return {
+      dialog: false,
+      rangeToCopyFrom: null,
+    }
+  },
+  methods: {
+    openConfirmationDialog(range) {
+      this.rangeToCopyFrom = range;
+      this.dialog = true;
+      console.log("Opening dialog");
+      console.log(!!this.dialog);
+    },
+    confirm() {
+      console.log("Confirmed");
+      this.$emit("confirm", this.rangeToCopyFrom);
+      this.dialog = false;
+    },
+    cancel() {
+      console.log("Cancelled");
+      this.dialog = false;
+      this.rangeToCopyFrom = null;
+    },
+  },
+})
+</script>
+
+<template>
+  <div>
+    <v-menu
+        offset-y
+    >
+      <template #activator="{ attrs, on }">
+        <slot name="activator" :attrs="attrs" :on="on">
+          <primary-action-button i18n-key="actions.copy_last_configuration" icon="mdi-content-copy"/>
+        </slot>
+      </template>
+      <v-list dense>
+        <v-list-item v-for="range in ranges" @click="openConfirmationDialog(range)">
+          <v-list-item-title>{{ range }}</v-list-item-title>
+        </v-list-item>
+      </v-list>
+    </v-menu>
+
+    <confirm-dialog v-model="dialog" @confirm="confirm" @cancel="cancel">
+      <template #title>
+        {{ $t('actions.confirm_copy_last_configuration') }}
+      </template>
+      <template #text>
+        {{ $t('actions.confirm_copy_last_configuration_message') }}
+      </template>
+    </confirm-dialog>
+  </div>
+</template>
+
+<style scoped>
+
+</style>
\ No newline at end of file

aleksis/apps/lesrooster/frontend/messages/en.json

@@ -93,6 +93,8 @@
   "actions": {
     "copy_to_day": "Copy to another day",
     "search_courses": "Search Courses",
-    "copy_last_configuration": "Copy from different range"
+    "copy_last_configuration": "Copy from different range",
+    "confirm_copy_last_configuration": "Do you really want to copy another configuration to this range?",
+    "confirm_copy_last_configuration_message": "This will overwrite all existing data in this range. This action cannot be undone."
   }
 }