絵文字ピッカーを常に表示するように

Resolve #7265

src/client/os.ts

@@ -1,5 +1,8 @@
+// TODO: なんでもかんでもos.tsに突っ込むのやめたいのでよしなに分割する
+
 import { Component, defineAsyncComponent, markRaw, reactive, Ref, ref } from 'vue';
 import { EventEmitter } from 'eventemitter3';
+import insertTextAtCursor from 'insert-text-at-cursor';
 import * as Sentry from '@sentry/browser';
 import Stream from '@/scripts/stream';
 import { apiUrl, debug } from '@/config';
@@ -289,7 +292,7 @@ export async function selectDriveFolder(multiple: boolean) {
 
 export async function pickEmoji(src?: HTMLElement, opts) {
 	return new Promise((resolve, reject) => {
-		popup(import('@/components/emoji-picker.vue'), {
+		popup(import('@/components/emoji-picker-dialog.vue'), {
 			src,
 			...opts
 		}, {
@@ -300,6 +303,63 @@ export async function pickEmoji(src?: HTMLElement, opts) {
 	});
 }
 
+type AwaitType<T> =
+	T extends Promise<infer U> ? U :
+	T extends (...args: Array<any>) => Promise<infer V> ? V :
+	T;
+let openingEmojiPicker: AwaitType<ReturnType<typeof popup>> | null = null;
+let activeTextarea: HTMLTextAreaElement | HTMLInputElement | null = null;
+export async function openEmojiPicker(src?: HTMLElement, opts, initialTextarea: typeof activeTextarea) {
+	if (openingEmojiPicker) return;
+
+	activeTextarea = initialTextarea;
+
+	const textareas = document.querySelectorAll('textarea, input');
+	for (const textarea of Array.from(textareas)) {
+		textarea.addEventListener('focus', () => {
+			activeTextarea = textarea;
+		});
+	}
+
+	const observer = new MutationObserver(records => {
+		for (const record of records) {
+			for (const node of Array.from(record.addedNodes)) {
+				if (node instanceof HTMLElement) {
+					const textareas = node.querySelectorAll('textarea, input');
+					for (const textarea of Array.from(textareas)) {
+						if (textarea.dataset.preventEmojiInsert != null) return;
+						if (document.activeElement === textarea) activeTextarea = textarea;
+						textarea.addEventListener('focus', () => {
+							activeTextarea = textarea;
+						});
+					}
+				}
+			}
+		}
+	});
+
+	observer.observe(document.body, {
+		childList: true,
+		subtree: true,
+		attributes: false,
+		characterData: false,
+	});
+
+	openingEmojiPicker = await popup(import('@/components/emoji-picker-window.vue'), {
+		src,
+		...opts
+	}, {
+		chosen: emoji => {
+			insertTextAtCursor(activeTextarea, emoji);
+		},
+		closed: () => {
+			openingEmojiPicker!.dispose();
+			openingEmojiPicker = null;
+			observer.disconnect();
+		}
+	});
+}
+
 export function modalMenu(items: any[], src?: HTMLElement, options?: { align?: string; viaKeyboard?: boolean }) {
 	return new Promise((resolve, reject) => {
 		let dispose;