diff --git a/src/web/app/desktop/views/components/post-form.vue b/src/web/app/desktop/views/components/post-form.vue
index d021c9ab55..52efaf849f 100644
--- a/src/web/app/desktop/views/components/post-form.vue
+++ b/src/web/app/desktop/views/components/post-form.vue
@@ -6,19 +6,19 @@
 	@drop="onDrop"
 >
 	<div class="content">
-		<textarea :class="{ with: (files.length != 0 || poll) }" ref="text" :disabled="wait"
+		<textarea :class="{ with: (files.length != 0 || poll) }" ref="text" :disabled="posting"
 			@keydown="onKeydown" @paste="onPaste" :placeholder="placeholder"
 		></textarea>
 		<div class="medias" :class="{ with: poll }" v-show="files.length != 0">
 			<ul ref="media">
-				<li each={ files } data-id={ id }>
-					<div class="img" style="background-image: url({ url + '?thumbnail&size=64' })" title={ name }></div>
-					<img class="remove" @click="removeFile" src="/assets/desktop/remove.png" title="%i18n:desktop.tags.mk-post-form.attach-cancel%" alt=""/>
+				<li v-for="file in files" :key="file.id">
+					<div class="img" :style="{ backgroundImage: `url(${file.url}?thumbnail&size=64)` }" :title="file.name"></div>
+					<img class="remove" @click="removeFile(file.id)" src="/assets/desktop/remove.png" title="%i18n:desktop.tags.mk-post-form.attach-cancel%" alt=""/>
 				</li>
 			</ul>
-			<p class="remain">{ 4 - files.length }/4</p>
+			<p class="remain">{{ 4 - files.length }}/4</p>
 		</div>
-		<mk-poll-editor v-if="poll" ref="poll" ondestroy={ onPollDestroyed }/>
+		<mk-poll-editor v-if="poll" ref="poll" @destroyed="onPollDestroyed"/>
 	</div>
 	<mk-uploader ref="uploader"/>
 	<button ref="upload" title="%i18n:desktop.tags.mk-post-form.attach-media-from-local%" @click="selectFile">%fa:upload%</button>
@@ -26,10 +26,29 @@
 	<button class="kao" title="%i18n:desktop.tags.mk-post-form.insert-a-kao%" @click="kao">%fa:R smile%</button>
 	<button class="poll" title="%i18n:desktop.tags.mk-post-form.create-poll%" @click="addPoll">%fa:chart-pie%</button>
 	<p class="text-count { over: refs.text.value.length > 1000 }">{ '%i18n:desktop.tags.mk-post-form.text-remain%'.replace('{}', 1000 - refs.text.value.length) }</p>
-	<button :class="{ wait: wait }" ref="submit" disabled={ wait || (refs.text.value.length == 0 && files.length == 0 && !poll　&& !repost) } @click="post">
-		{ wait ? '%i18n:desktop.tags.mk-post-form.posting%' : submitText }<mk-ellipsis v-if="wait"/>
+	<button :class="{ posting }" ref="submit" :disabled="!canPost" @click="post">
+		{ posting ? '%i18n:desktop.tags.mk-post-form.posting%' : submitText }<mk-ellipsis v-if="posting"/>
 	</button>
 	<input ref="file" type="file" accept="image/*" multiple="multiple" tabindex="-1" onchange={ changeFile }/>
 	<div class="dropzone" v-if="draghover"></div>
 </div>
 </template>
+
+<script lang="ts">
+import Vue from 'vue';
+
+export default Vue.extend({
+	data() {
+		return {
+			posting: false,
+
+		};
+	},
+	computed: {
+		canPost(): boolean {
+			return !this.posting && (refs.text.value.length != 0 || files.length != 0 || poll || repost);
+		}
+	}
+});
+</script>
+