113 lines
2.4 KiB
TypeScript
113 lines
2.4 KiB
TypeScript
/*
|
|
GoToSocial
|
|
Copyright (C) GoToSocial Authors admin@gotosocial.org
|
|
SPDX-License-Identifier: AGPL-3.0-or-later
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
import React from "react";
|
|
|
|
import { useState } from "react";
|
|
import prettierBytes from "prettier-bytes";
|
|
|
|
import type {
|
|
CreateHookNames,
|
|
HookOpts,
|
|
FileFormInputHook,
|
|
} from "./types";
|
|
|
|
const _default = undefined;
|
|
export default function useFileInput(
|
|
{ name }: CreateHookNames,
|
|
{
|
|
withPreview,
|
|
maxSize,
|
|
initialInfo = "no file selected"
|
|
}: HookOpts<File>
|
|
): FileFormInputHook {
|
|
const [file, setFile] = useState<File>();
|
|
const [imageURL, setImageURL] = useState<string>();
|
|
const [info, setInfo] = useState<React.JSX.Element>();
|
|
|
|
function onChange(e: React.ChangeEvent<HTMLInputElement>) {
|
|
const files = e.target.files;
|
|
if (!files) {
|
|
setInfo(undefined);
|
|
return;
|
|
}
|
|
|
|
let file = files[0];
|
|
setFile(file);
|
|
|
|
if (imageURL) {
|
|
URL.revokeObjectURL(imageURL);
|
|
}
|
|
|
|
if (withPreview) {
|
|
setImageURL(URL.createObjectURL(file));
|
|
}
|
|
|
|
let size = prettierBytes(file.size);
|
|
if (maxSize && file.size > maxSize) {
|
|
size = <span className="error-text">{size}</span>;
|
|
}
|
|
|
|
setInfo(
|
|
<>
|
|
{file.name} ({size})
|
|
</>
|
|
);
|
|
}
|
|
|
|
function reset() {
|
|
if (imageURL) {
|
|
URL.revokeObjectURL(imageURL);
|
|
}
|
|
setImageURL(undefined);
|
|
setFile(undefined);
|
|
setInfo(undefined);
|
|
}
|
|
|
|
const infoComponent = (
|
|
<span className="form-info">
|
|
{info
|
|
? info
|
|
: initialInfo
|
|
}
|
|
</span>
|
|
);
|
|
|
|
// Array / Object hybrid, for easier access in different contexts
|
|
return Object.assign([
|
|
onChange,
|
|
reset,
|
|
{
|
|
[name]: file,
|
|
[`${name}URL`]: imageURL,
|
|
[`${name}Info`]: infoComponent,
|
|
}
|
|
], {
|
|
onChange,
|
|
reset,
|
|
name,
|
|
Name: "", // Will be set by inputHook function.
|
|
value: file,
|
|
previewValue: imageURL,
|
|
hasChanged: () => file != undefined,
|
|
infoComponent,
|
|
_default,
|
|
});
|
|
}
|