MyCrypto/common/components/ui/Input.tsx

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import React, { HTMLProps } from 'react';
import './Input.scss';
interface State {
hasBlurred: boolean;
}
class Input extends React.Component<HTMLProps<HTMLInputElement>, State> {
public state: State = {
hasBlurred: false
};
public render() {
return (
<input
{...this.props}
onBlur={e => {
this.setState({ hasBlurred: true });
if (this.props && this.props.onBlur) {
this.props.onBlur(e);
}
}}
onWheel={this.props.type === 'number' ? this.preventNumberScroll : undefined}
className={`input-group-input ${this.props.className} ${
this.state.hasBlurred ? 'has-blurred' : ''
} ${!!this.props.value && this.props.value.toString().length > 0 ? 'has-value' : ''}`}
/>
);
}
// When number inputs are scrolled on while in focus, the number changes. So we blur
// it if it's focused to prevent that behavior, without preventing the scroll.
private preventNumberScroll(ev: React.WheelEvent<HTMLInputElement>) {
if (document.activeElement === ev.currentTarget) {
ev.currentTarget.blur();
}
}
}
export default Input;