Allow confirmation on closing reply form

src/components/draft_closer/draft_closer.vue

@@ -0,0 +1,43 @@
+<template>
+  <teleport to="#modal">
+    <dialog-modal
+      v-if="showing"
+      v-body-scroll-lock="true"
+      class="confirm-modal"
+      :on-cancel="cancel"
+      >
+      <template #header>
+        <span>
+          {{ $t('post_status.close_confirm_title') }}
+        </span>
+      </template>
+
+      {{ $t('post_status.close_confirm') }}
+
+      <template #footer>
+        <button
+          class="btn button-default"
+          @click.prevent="save"
+        >
+          {{ $t('post_status.close_confirm_save_button') }}
+        </button>
+
+        <button
+          class="btn button-default"
+          @click.prevent="discard"
+        >
+          {{ $t('post_status.close_confirm_discard_button') }}
+        </button>
+
+        <button
+          class="btn button-default"
+          @click.prevent="cancel"
+        >
+          {{ $t('post_status.close_confirm_continue_composing_button') }}
+        </button>
+      </template>
+    </dialog-modal>
+  </teleport>
+</template>
+
+<script src="./draft_closer.js"></script>