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import { colors } from '@0x/react-shared';
import { BigNumber } from '@0x/utils';
import * as _ from 'lodash';
import TextField from 'material-ui/TextField';
import * as React from 'react';
import { RequiredLabel } from 'ts/components/ui/required_label';
import { ValidatedBigNumberCallback } from 'ts/types';
import { utils } from 'ts/utils/utils';
interface BalanceBoundedInputProps {
label?: string;
balance: BigNumber;
amount?: BigNumber;
hintText?: string;
onChange: ValidatedBigNumberCallback;
onErrorMsgChange?: (errorMsg: React.ReactNode) => void;
shouldShowIncompleteErrs?: boolean;
shouldCheckBalance: boolean;
validate?: (amount: BigNumber) => React.ReactNode;
isDisabled?: boolean;
shouldShowErrs?: boolean;
shouldShowUnderline?: boolean;
inputStyle?: React.CSSProperties;
inputHintStyle?: React.CSSProperties;
}
interface BalanceBoundedInputState {
errMsg: React.ReactNode;
amountString: string;
}
export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProps, BalanceBoundedInputState> {
public static defaultProps: Partial<BalanceBoundedInputProps> = {
shouldShowIncompleteErrs: false,
isDisabled: false,
shouldShowErrs: true,
hintText: 'amount',
onErrorMsgChange: _.noop.bind(_),
shouldShowUnderline: true,
};
constructor(props: BalanceBoundedInputProps) {
super(props);
const amountString = this.props.amount ? this.props.amount.toString() : '';
this.state = {
errMsg: this._validate(amountString, props.balance),
amountString,
};
}
public componentWillReceiveProps(nextProps: BalanceBoundedInputProps): void {
if (nextProps === this.props) {
return;
}
const isCurrentAmountNumeric = utils.isNumeric(this.state.amountString);
if (!_.isUndefined(nextProps.amount)) {
let shouldResetState = false;
if (!isCurrentAmountNumeric) {
shouldResetState = true;
} else {
const currentAmount = new BigNumber(this.state.amountString);
if (!currentAmount.eq(nextProps.amount) || !nextProps.balance.eq(this.props.balance)) {
shouldResetState = true;
}
}
if (shouldResetState) {
const amountString = nextProps.amount.toString();
this._setAmountState(amountString, nextProps.balance);
}
} else if (isCurrentAmountNumeric) {
const amountString = '';
this._setAmountState(amountString, nextProps.balance);
}
}
public render(): React.ReactNode {
let errorText;
if (this.props.shouldShowErrs) {
errorText =
this.props.shouldShowIncompleteErrs && this.state.amountString === ''
? 'This field is required'
: this.state.errMsg;
}
let label: React.ReactNode | string = '';
if (!_.isUndefined(this.props.label)) {
label = <RequiredLabel label={this.props.label} />;
}
return (
<TextField
fullWidth={true}
floatingLabelText={label}
floatingLabelFixed={true}
floatingLabelStyle={{ color: colors.grey, width: 206 }}
errorText={errorText}
value={this.state.amountString}
hintText={<span style={{ textTransform: 'capitalize' }}>{this.props.hintText}</span>}
onChange={this._onValueChange.bind(this)}
underlineStyle={{ width: 'calc(100% + 50px)' }}
inputStyle={this.props.inputStyle}
hintStyle={this.props.inputHintStyle}
underlineShow={this.props.shouldShowUnderline}
disabled={this.props.isDisabled}
/>
);
}
private _onValueChange(_event: any, amountString: string): void {
this._setAmountState(amountString, this.props.balance, () => {
const isValid = _.isUndefined(this._validate(amountString, this.props.balance));
const isPositiveNumber = utils.isNumeric(amountString) && !_.includes(amountString, '-');
if (isPositiveNumber) {
this.props.onChange(isValid, new BigNumber(amountString));
} else {
this.props.onChange(isValid);
}
});
}
private _validate(amountString: string, balance: BigNumber): React.ReactNode {
if (!utils.isNumeric(amountString)) {
return amountString !== '' ? 'Must be a number' : '';
}
const amount = new BigNumber(amountString);
if (amount.eq(0)) {
return 'Cannot be zero';
}
if (this.props.shouldCheckBalance && amount.gt(balance)) {
return <span>Insufficient balance.</span>;
}
const errMsg = _.isUndefined(this.props.validate) ? undefined : this.props.validate(amount);
return errMsg;
}
private _setAmountState(amount: string, balance: BigNumber, callback: () => void = _.noop.bind(_)): void {
const errorMsg = this._validate(amount, balance);
this.props.onErrorMsgChange(errorMsg);
this.setState(
{
amountString: amount,
errMsg: errorMsg,
},
callback,
);
}
}
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