enhance(frontend): CWの注釈で入力済みの文字数を表示する (#15070)

* enhance: CW注釈の文字数表示

* update: CHANGELOG.md

* chore: maxCwTextLengthをただのconstにする

* fix: 投稿ボタンのdisable判定条件

---------

Co-authored-by: かっこかり <67428053+kakkokari-gtyih@users.noreply.github.com>

1 files changed, 33 insertions, 1 deletions

diff --git a/packages/frontend/src/components/MkPostForm.vue b/packages/frontend/src/components/MkPostForm.vue
index 49ed4197de..ad0a332f99 100644
--- a/packages/frontend/src/components/MkPostForm.vue
+++ b/packages/frontend/src/components/MkPostForm.vue
@@ -65,7 +65,10 @@ SPDX-License-Identifier: AGPL-3.0-only
 		</div>
 	</div>
 	<MkInfo v-if="hasNotSpecifiedMentions" warn :class="$style.hasNotSpecifiedMentions">{{ i18n.ts.notSpecifiedMentionWarning }} - <button class="_textButton" @click="addMissingMention()">{{ i18n.ts.add }}</button></MkInfo>
-	<input v-show="useCw" ref="cwInputEl" v-model="cw" :class="$style.cw" :placeholder="i18n.ts.annotation" @keydown="onKeydown" @keyup="onKeyup" @compositionend="onCompositionEnd">
+	<div v-show="useCw" :class="$style.cwOuter">
+		<input ref="cwInputEl" v-model="cw" :class="$style.cw" :placeholder="i18n.ts.annotation" @keydown="onKeydown" @keyup="onKeyup" @compositionend="onCompositionEnd">
+		<div v-if="maxCwTextLength - cwTextLength < 20" :class="['_acrylic', $style.cwTextCount, { [$style.cwTextOver]: cwTextLength > maxCwTextLength }]">{{ maxCwTextLength - cwTextLength }}</div>		
+	</div>
 	<div :class="[$style.textOuter, { [$style.withCw]: useCw }]">
 		<div v-if="channel" :class="$style.colorBar" :style="{ background: channel.color }"></div>
 		<textarea ref="textareaEl" v-model="text" :class="[$style.text]" :disabled="posting || posted" :readonly="textAreaReadOnly" :placeholder="placeholder" data-cy-post-form-text @keydown="onKeydown" @keyup="onKeyup" @paste="onPaste" @compositionupdate="onCompositionUpdate" @compositionend="onCompositionEnd"/>
@@ -244,6 +247,12 @@ const maxTextLength = computed((): number => {
 	return instance ? instance.maxNoteTextLength : 1000;
 });
 
+const cwTextLength = computed((): number => {
+	return cw.value?.length ?? 0;
+});
+
+const maxCwTextLength = 100;
+
 const canPost = computed((): boolean => {
 	return !props.mock && !posting.value && !posted.value &&
 		(
@@ -254,6 +263,7 @@ const canPost = computed((): boolean => {
 			quoteId.value != null
 		) &&
 		(textLength.value <= maxTextLength.value) &&
+		(cwTextLength.value <= maxCwTextLength) &&
 		(files.value.length <= 16) &&
 		(!poll.value || poll.value.choices.length >= 2);
 });
@@ -1273,12 +1283,34 @@ html[data-color-scheme=light] .preview {
 	}
 }
 
+.cwOuter {
+	width: 100%;
+	position: relative;
+}
+
 .cw {
 	z-index: 1;
 	padding-bottom: 8px;
 	border-bottom: solid 0.5px var(--MI_THEME-divider);
 }
 
+.cwTextCount {
+	position: absolute;
+	top: 0;
+	right: 2px;
+	padding: 2px 6px;
+	font-size: .9em;
+	color: var(--MI_THEME-warn);
+	border-radius: 6px;
+	max-width: 100%;
+	min-width: 1.6em;
+	text-align: center;
+
+	&.cwTextOver {
+		color: #ff2a2a;
+	}
+}
+
 .hashtags {
 	z-index: 1;
 	padding-top: 8px;