Allow confirmation on closing reply form

src/components/draft_closer/draft_closer.js

@@ -0,0 +1,48 @@
+import DialogModal from 'src/components/dialog_modal/dialog_modal.vue'
+
+const DraftCloser = {
+  data () {
+    return {
+      showing: false
+    }
+  },
+  components: {
+    DialogModal
+  },
+  emits: [
+    'save',
+    'discard'
+  ],
+  computed: {
+    action () {
+      return this.$store.getters.mergedConfig.unsavedPostAction
+    },
+    shouldConfirm () {
+      return this.action === 'confirm'
+    }
+  },
+  methods: {
+    requestClose () {
+      if (this.shouldConfirm) {
+        this.showing = true
+      } else if (this.action === 'save') {
+        this.save()
+      } else {
+        this.discard()
+      }
+    },
+    save () {
+      this.$emit('save')
+      this.showing = false
+    },
+    discard () {
+      this.$emit('discard')
+      this.showing = false
+    },
+    cancel () {
+      this.showing = false
+    }
+  }
+}
+
+export default DraftCloser