Files
web-dslr/ui/capture-button.js
2021-07-23 19:19:40 +00:00

39 lines
973 B
JavaScript

import { h, Component, Fragment } from 'preact';
/** @extends Component<{ getFile: () => Promise<File> }, { status: string }> */
export class CaptureButton extends Component {
state = { status: '📷' };
handleCapture = async () => {
this.setState({ status: '⌛' });
try {
let file = await this.props.getFile();
let url = URL.createObjectURL(file);
Object.assign(document.createElement('a'), {
download: file.name,
href: url
}).click();
URL.revokeObjectURL(url);
this.setState({ status: '📷' });
} catch (err) {
console.error(err);
this.setState({ status: '❌' });
}
};
render() {
return h(
Fragment,
null,
h('input', {
type: 'button',
id: 'capture',
disabled: this.state.status !== '📷',
class: 'pure-button',
onclick: this.handleCapture,
value: `${this.state.status} Capture image`
})
);
}
}