rename: client -> frontend
This commit is contained in:
syuilo
276
packages/frontend/src/scripts/autocomplete.ts
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276
packages/frontend/src/scripts/autocomplete.ts
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import { nextTick, Ref, ref, defineAsyncComponent } from 'vue';
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import getCaretCoordinates from 'textarea-caret';
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import { toASCII } from 'punycode/';
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import { popup } from '@/os';
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export class Autocomplete {
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private suggestion: {
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x: Ref<number>;
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y: Ref<number>;
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q: Ref<string | null>;
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close: () => void;
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} | null;
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private textarea: HTMLInputElement | HTMLTextAreaElement;
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private currentType: string;
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private textRef: Ref<string>;
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private opening: boolean;
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private get text(): string {
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// Use raw .value to get the latest value
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// (Because v-model does not update while composition)
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return this.textarea.value;
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}
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private set text(text: string) {
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// Use ref value to notify other watchers
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// (Because .value setter never fires input/change events)
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this.textRef.value = text;
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}
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/**
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* 対象のテキストエリアを与えてインスタンスを初期化します。
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*/
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constructor(textarea: HTMLInputElement | HTMLTextAreaElement, textRef: Ref<string>) {
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//#region BIND
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this.onInput = this.onInput.bind(this);
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this.complete = this.complete.bind(this);
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this.close = this.close.bind(this);
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//#endregion
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this.suggestion = null;
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this.textarea = textarea;
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this.textRef = textRef;
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this.opening = false;
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this.attach();
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}
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/**
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* このインスタンスにあるテキストエリアの入力のキャプチャを開始します。
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*/
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public attach() {
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this.textarea.addEventListener('input', this.onInput);
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}
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/**
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* このインスタンスにあるテキストエリアの入力のキャプチャを解除します。
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*/
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public detach() {
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this.textarea.removeEventListener('input', this.onInput);
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this.close();
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}
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/**
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* テキスト入力時
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*/
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private onInput() {
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const caretPos = this.textarea.selectionStart;
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const text = this.text.substr(0, caretPos).split('\n').pop()!;
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const mentionIndex = text.lastIndexOf('@');
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const hashtagIndex = text.lastIndexOf('#');
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const emojiIndex = text.lastIndexOf(':');
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const mfmTagIndex = text.lastIndexOf('$');
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const max = Math.max(
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mentionIndex,
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hashtagIndex,
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emojiIndex,
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mfmTagIndex);
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if (max === -1) {
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this.close();
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return;
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}
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const isMention = mentionIndex !== -1;
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const isHashtag = hashtagIndex !== -1;
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const isMfmTag = mfmTagIndex !== -1;
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const isEmoji = emojiIndex !== -1 && text.split(/:[a-z0-9_+\-]+:/).pop()!.includes(':');
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let opened = false;
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if (isMention) {
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const username = text.substr(mentionIndex + 1);
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if (username !== '' && username.match(/^[a-zA-Z0-9_]+$/)) {
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this.open('user', username);
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opened = true;
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} else if (username === '') {
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this.open('user', null);
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opened = true;
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}
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}
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if (isHashtag && !opened) {
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const hashtag = text.substr(hashtagIndex + 1);
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if (!hashtag.includes(' ')) {
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this.open('hashtag', hashtag);
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opened = true;
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}
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}
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if (isEmoji && !opened) {
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const emoji = text.substr(emojiIndex + 1);
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if (!emoji.includes(' ')) {
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this.open('emoji', emoji);
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opened = true;
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}
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}
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if (isMfmTag && !opened) {
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const mfmTag = text.substr(mfmTagIndex + 1);
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if (!mfmTag.includes(' ')) {
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this.open('mfmTag', mfmTag.replace('[', ''));
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opened = true;
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}
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}
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if (!opened) {
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this.close();
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}
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}
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/**
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* サジェストを提示します。
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*/
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private async open(type: string, q: string | null) {
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if (type !== this.currentType) {
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this.close();
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}
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if (this.opening) return;
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this.opening = true;
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this.currentType = type;
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//#region サジェストを表示すべき位置を計算
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const caretPosition = getCaretCoordinates(this.textarea, this.textarea.selectionStart);
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const rect = this.textarea.getBoundingClientRect();
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const x = rect.left + caretPosition.left - this.textarea.scrollLeft;
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const y = rect.top + caretPosition.top - this.textarea.scrollTop;
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//#endregion
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if (this.suggestion) {
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this.suggestion.x.value = x;
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this.suggestion.y.value = y;
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this.suggestion.q.value = q;
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this.opening = false;
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} else {
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const _x = ref(x);
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const _y = ref(y);
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const _q = ref(q);
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const { dispose } = await popup(defineAsyncComponent(() => import('@/components/MkAutocomplete.vue')), {
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textarea: this.textarea,
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close: this.close,
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type: type,
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q: _q,
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x: _x,
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y: _y,
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}, {
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done: (res) => {
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this.complete(res);
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},
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});
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this.suggestion = {
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q: _q,
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x: _x,
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y: _y,
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close: () => dispose(),
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};
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this.opening = false;
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}
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}
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/**
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* サジェストを閉じます。
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*/
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private close() {
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if (this.suggestion == null) return;
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this.suggestion.close();
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this.suggestion = null;
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this.textarea.focus();
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}
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/**
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* オートコンプリートする
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*/
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private complete({ type, value }) {
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this.close();
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const caret = this.textarea.selectionStart;
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if (type === 'user') {
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const source = this.text;
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const before = source.substr(0, caret);
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const trimmedBefore = before.substring(0, before.lastIndexOf('@'));
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const after = source.substr(caret);
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const acct = value.host === null ? value.username : `${value.username}@${toASCII(value.host)}`;
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// 挿入
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this.text = `${trimmedBefore}@${acct} ${after}`;
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// キャレットを戻す
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nextTick(() => {
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this.textarea.focus();
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const pos = trimmedBefore.length + (acct.length + 2);
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this.textarea.setSelectionRange(pos, pos);
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});
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} else if (type === 'hashtag') {
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const source = this.text;
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const before = source.substr(0, caret);
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const trimmedBefore = before.substring(0, before.lastIndexOf('#'));
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const after = source.substr(caret);
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// 挿入
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this.text = `${trimmedBefore}#${value} ${after}`;
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// キャレットを戻す
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nextTick(() => {
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this.textarea.focus();
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const pos = trimmedBefore.length + (value.length + 2);
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this.textarea.setSelectionRange(pos, pos);
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});
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} else if (type === 'emoji') {
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const source = this.text;
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const before = source.substr(0, caret);
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const trimmedBefore = before.substring(0, before.lastIndexOf(':'));
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const after = source.substr(caret);
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// 挿入
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this.text = trimmedBefore + value + after;
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// キャレットを戻す
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nextTick(() => {
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this.textarea.focus();
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const pos = trimmedBefore.length + value.length;
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this.textarea.setSelectionRange(pos, pos);
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});
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} else if (type === 'mfmTag') {
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const source = this.text;
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const before = source.substr(0, caret);
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const trimmedBefore = before.substring(0, before.lastIndexOf('$'));
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const after = source.substr(caret);
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// 挿入
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this.text = `${trimmedBefore}$[${value} ]${after}`;
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// キャレットを戻す
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nextTick(() => {
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this.textarea.focus();
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const pos = trimmedBefore.length + (value.length + 3);
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this.textarea.setSelectionRange(pos, pos);
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});
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}
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}
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}
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