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import ToastUIEditor from "@toast-ui/editor";
import { ToolbarItem } from "@toast-ui/editor/types/ui";
import classNames from "classnames";
import { INSERT_IMAGE } from "components/MarkdownInput/constants";
import UploadImage from "components/MarkdownInput/UploadImage";
import { MutableRefObject, useEffect, useRef, useState } from "react";
import { useController } from "react-hook-form";
import makeStyles from "utils/makeStyles";
import { MarkdownInputProps } from "./MarkdownInput";
const useStyles = makeStyles((theme) => ({
root: {
"& .toastui-editor-contents": {
fontSize: theme.typography.fontSize,
fontFamily: theme.typography.fontFamily,
"& h1, & h2, & h3, & h4, & h5, & h6": {
borderBottom: "none",
paddingBottom: 0,
marginBottom: 0,
marginTop: theme.spacing(2),
},
"& h1": {
...theme.typography.h1,
},
"& h2": {
...theme.typography.h2,
},
"& h3": theme.typography.h3,
"& h4": theme.typography.h4,
"& h5": theme.typography.h5,
"& h6": theme.typography.h6,
"& p": theme.typography.body1,
"& ol": theme.typography.body1,
"& ul": theme.typography.body1,
"& blockquote": theme.typography.body1,
"& a": {
color: theme.palette.primary.main,
},
"& img": {
width: "100%",
maxWidth: "400px",
},
},
},
errorState: {
"& .toastui-editor-defaultUI": {
border: "2px solid red",
},
},
}));
export default function MarkdownInput({
control,
defaultValue,
id,
resetInputRef,
labelId,
name,
imageUpload = false,
autofocus = false,
required,
}: MarkdownInputProps) {
const classes = useStyles();
const { field, meta } = useController({
name,
control,
defaultValue: defaultValue ?? "",
rules: {
required,
},
});
const [imageDialogOpen, setImageDialogOpen] = useState(false);
const initialDefaultValue = useRef(defaultValue);
const { ref: fieldRef }: { ref: MutableRefObject<ToastUIEditor> } = field;
const rootEl = useRef<HTMLDivElement>(null);
// Workaround to keep the function identities of onBlur/onChange stable to
// prevent the effect below from re-running and destroying the editor instance
const fieldOnBlur = useRef<typeof field.onBlur>(field.onBlur);
const fieldOnChange = useRef<typeof field.onChange>(field.onChange);
useEffect(() => {
const uploadButton = imageUpload ? document.createElement("button") : null;
const openDialog = () => {
setImageDialogOpen(true);
};
if (imageUpload) {
uploadButton!.type = "button";
//class stolen from tui source code
uploadButton!.className = "toastui-editor-toolbar-icons image";
uploadButton!.setAttribute("aria-label", INSERT_IMAGE);
uploadButton!.style.margin = "0";
uploadButton!.addEventListener("click", openDialog);
}
const toolbarItems: ToolbarItem[] = [
["heading", "bold", "italic"],
["hr", "quote", "ul", "ol"],
["link"],
];
if (imageUpload) {
toolbarItems.push([
{
name: "image",
tooltip: INSERT_IMAGE,
el: uploadButton!,
},
]);
}
fieldRef.current = new ToastUIEditor({
el: rootEl.current!,
events: {
blur: () => fieldOnBlur.current(),
change: () =>
fieldOnChange.current(
(fieldRef.current as ToastUIEditor).getMarkdown()
),
},
initialEditType: "wysiwyg",
initialValue: initialDefaultValue.current ?? "",
usageStatistics: false,
toolbarItems,
autofocus,
extendedAutolinks: true,
});
Iif (resetInputRef) {
resetInputRef.current = fieldRef.current.reset.bind(fieldRef.current);
}
const editBox = document.querySelector(`#${id} [contenteditable=true]`);
if (editBox) {
editBox.setAttribute("aria-labelledby", labelId);
editBox.setAttribute("aria-multiline", "true");
editBox.setAttribute("role", "textbox");
} else E{
console.warn(
"Couldn't locate the markdown input area for accessibility tags"
);
}
return () => {
Iif (resetInputRef) {
resetInputRef.current = null;
}
if (imageUpload) uploadButton!.removeEventListener("click", openDialog);
(fieldRef.current as ToastUIEditor).destroy();
};
}, [autofocus, fieldRef, resetInputRef, id, labelId, imageUpload]);
return (
<>
<div
className={classNames(classes.root, {
[classes.errorState]: meta.invalid,
})}
ref={rootEl}
id={id}
/>
{imageUpload && (
<UploadImage
open={imageDialogOpen}
onClose={() => setImageDialogOpen(false)}
emitter={
(fieldRef.current as ToastUIEditor | undefined)?.eventEmitter
}
/>
)}
</>
);
}
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