1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
import React, { PureComponent } from 'react'
import PropTypes from 'prop-types'
import UnitInput from '../unit-input'
import CurrencyDisplay from '../currency-display'
import { getValueFromWeiHex, getWeiHexFromDecimalValue } from '../../helpers/conversions.util'
import { ETH } from '../../constants/common'
/**
* Component that allows user to enter currency values as a number, and props receive a converted
* hex value in WEI. props.value, used as a default or forced value, should be a hex value, which
* gets converted into a decimal value depending on the currency (ETH or Fiat).
*/
export default class CurrencyInput extends PureComponent {
static propTypes = {
conversionRate: PropTypes.number,
currentCurrency: PropTypes.string,
nativeCurrency: PropTypes.string,
onChange: PropTypes.func,
onBlur: PropTypes.func,
suffix: PropTypes.string,
useFiat: PropTypes.bool,
value: PropTypes.string,
}
constructor (props) {
super(props)
const { value: hexValue } = props
const decimalValue = hexValue ? this.getDecimalValue(props) : 0
this.state = {
decimalValue,
hexValue,
}
}
componentDidUpdate (prevProps) {
const { value: prevPropsHexValue } = prevProps
const { value: propsHexValue } = this.props
const { hexValue: stateHexValue } = this.state
if (prevPropsHexValue !== propsHexValue && propsHexValue !== stateHexValue) {
const decimalValue = this.getDecimalValue(this.props)
this.setState({ hexValue: propsHexValue, decimalValue })
}
}
getDecimalValue (props) {
const { value: hexValue, useFiat, currentCurrency, conversionRate } = props
const decimalValueString = useFiat
? getValueFromWeiHex({
value: hexValue, toCurrency: currentCurrency, conversionRate, numberOfDecimals: 2,
})
: getValueFromWeiHex({
value: hexValue, toCurrency: ETH, numberOfDecimals: 6,
})
return Number(decimalValueString) || 0
}
handleChange = decimalValue => {
const { useFiat, currentCurrency: fromCurrency, conversionRate, onChange } = this.props
const hexValue = useFiat
? getWeiHexFromDecimalValue({
value: decimalValue, fromCurrency, conversionRate, invertConversionRate: true,
})
: getWeiHexFromDecimalValue({
value: decimalValue, fromCurrency: ETH, fromDenomination: ETH, conversionRate,
})
this.setState({ hexValue, decimalValue })
onChange(hexValue)
}
handleBlur = () => {
this.props.onBlur(this.state.hexValue)
}
renderConversionComponent () {
const { useFiat, currentCurrency, nativeCurrency } = this.props
const { hexValue } = this.state
let currency, numberOfDecimals
if (useFiat) {
// Display ETH
currency = nativeCurrency || ETH
numberOfDecimals = 6
} else {
// Display Fiat
currency = currentCurrency
numberOfDecimals = 2
}
return (
<CurrencyDisplay
className="currency-input__conversion-component"
currency={currency}
value={hexValue}
numberOfDecimals={numberOfDecimals}
/>
)
}
render () {
const { suffix, ...restProps } = this.props
const { decimalValue } = this.state
return (
<UnitInput
{...restProps}
suffix={suffix}
onChange={this.handleChange}
onBlur={this.handleBlur}
value={decimalValue}
>
{ this.renderConversionComponent() }
</UnitInput>
)
}
}
|
