ghost-portal/packages/ui-app/src/InputFile.tsx
Jaco Greeff eee4432a0a
Add hover help info for status dialogs (#893)
* Add hover help info for status dialogs

* Cleanup intentions -> waiting (actual nextup count)

* Format offline blockNumber
2019-04-05 11:46:28 +02:00

110 lines
2.6 KiB
TypeScript

// Copyright 2017-2019 @polkadot/ui-app authors & contributors
// This software may be modified and distributed under the terms
// of the Apache-2.0 license. See the LICENSE file for details.
import { WithTranslation } from 'react-i18next';
import { BareProps } from './types';
import React from 'react';
import Dropzone from 'react-dropzone';
import { classes } from './util';
import Labelled from './Labelled';
import translate from './translate';
type Props = BareProps & WithTranslation & {
// Reference Example Usage: https://github.com/react-dropzone/react-dropzone/tree/master/examples/Accept
// i.e. MIME types: 'application/json, text/plain', or '.json, .txt'
accept?: string,
clearContent?: boolean,
help?: React.ReactNode,
isDisabled?: boolean,
isError?: boolean,
label: string,
onChange?: (contents: Uint8Array) => void,
placeholder?: string,
withLabel?: boolean
};
type State = {
file?: {
name: string,
size: number
}
};
type LoadEvent = {
target: {
result: ArrayBuffer
}
};
class InputFile extends React.PureComponent<Props, State> {
state: State = {};
render () {
const { accept, className, clearContent, help, isDisabled, isError = false, label, placeholder, t, withLabel } = this.props;
const { file } = this.state;
return (
<Labelled
help={help}
label={label}
withLabel={withLabel}
>
<Dropzone
accept={accept}
className={classes('ui--InputFile', isError ? 'error' : '', className)}
disabled={isDisabled}
multiple={false}
onDrop={this.onDrop}
>
<div className='label'>
{
!file || clearContent
? placeholder || t('drag and drop the file here')
: placeholder || t('{{name}} ({{size}} bytes)', {
replace: file
})
}
</div>
</Dropzone>
</Labelled>
);
}
private onDrop = (files: Array<File>) => {
const { onChange } = this.props;
files.forEach((file) => {
const reader = new FileReader();
reader.onabort = () => {
// ignore
};
reader.onerror = () => {
// ignore
};
// @ts-ignore ummm... events are not properly specified here?
reader.onload = ({ target: { result } }: LoadEvent) => {
const data = new Uint8Array(result);
onChange && onChange(data);
this.setState({
file: {
name: file.name,
size: data.length
}
});
};
reader.readAsArrayBuffer(file);
});
}
}
export default translate(InputFile);