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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
const Component = require('react').Component
const h = require('react-hyperscript')
const inherits = require('util').inherits
const { conversionUtil, multiplyCurrencies } = require('../../conversion-util')
const { removeLeadingZeroes } = require('../send_/send.utils')
const currencyFormatter = require('currency-formatter')
const currencies = require('currency-formatter/currencies')
const ethUtil = require('ethereumjs-util')
module.exports = CurrencyDisplay
inherits(CurrencyDisplay, Component)
function CurrencyDisplay () {
Component.call(this)
}
function toHexWei (value) {
return conversionUtil(value, {
fromNumericBase: 'dec',
toNumericBase: 'hex',
toDenomination: 'WEI',
})
}
CurrencyDisplay.prototype.componentWillMount = function () {
this.setState({
valueToRender: this.getValueToRender(this.props),
})
}
CurrencyDisplay.prototype.componentWillReceiveProps = function (nextProps) {
const currentValueToRender = this.getValueToRender(this.props)
const newValueToRender = this.getValueToRender(nextProps)
if (currentValueToRender !== newValueToRender) {
this.setState({
valueToRender: newValueToRender,
})
}
}
CurrencyDisplay.prototype.getAmount = function (value) {
const { selectedToken } = this.props
const { decimals } = selectedToken || {}
const multiplier = Math.pow(10, Number(decimals || 0))
const sendAmount = multiplyCurrencies(value || '0', multiplier, {toNumericBase: 'hex'})
return selectedToken
? sendAmount
: toHexWei(value)
}
CurrencyDisplay.prototype.getValueToRender = function ({ selectedToken, conversionRate, value, readOnly }) {
if (value === '0x0') return readOnly ? '0' : ''
const { decimals, symbol } = selectedToken || {}
const multiplier = Math.pow(10, Number(decimals || 0))
return selectedToken
? conversionUtil(ethUtil.addHexPrefix(value), {
fromNumericBase: 'hex',
toNumericBase: 'dec',
toCurrency: symbol,
conversionRate: multiplier,
invertConversionRate: true,
})
: conversionUtil(ethUtil.addHexPrefix(value), {
fromNumericBase: 'hex',
toNumericBase: 'dec',
fromDenomination: 'WEI',
numberOfDecimals: 9,
conversionRate,
})
}
CurrencyDisplay.prototype.getConvertedValueToRender = function (nonFormattedValue) {
const { primaryCurrency, convertedCurrency, conversionRate } = this.props
let convertedValue = conversionUtil(nonFormattedValue, {
fromNumericBase: 'dec',
fromCurrency: primaryCurrency,
toCurrency: convertedCurrency,
numberOfDecimals: 2,
conversionRate,
})
convertedValue = Number(convertedValue).toFixed(2)
const upperCaseCurrencyCode = convertedCurrency.toUpperCase()
return currencies.find(currency => currency.code === upperCaseCurrencyCode)
? currencyFormatter.format(Number(convertedValue), {
code: upperCaseCurrencyCode,
})
: convertedValue
}
CurrencyDisplay.prototype.handleChange = function (newVal) {
this.setState({ valueToRender: removeLeadingZeroes(newVal) })
this.props.onChange(this.getAmount(newVal))
}
CurrencyDisplay.prototype.getInputWidth = function (valueToRender, readOnly) {
const valueString = String(valueToRender)
const valueLength = valueString.length || 1
const decimalPointDeficit = valueString.match(/\./) ? -0.5 : 0
return (valueLength + decimalPointDeficit + 0.75) + 'ch'
}
CurrencyDisplay.prototype.render = function () {
const {
className = 'currency-display',
primaryBalanceClassName = 'currency-display__input',
convertedBalanceClassName = 'currency-display__converted-value',
primaryCurrency,
convertedCurrency,
readOnly = false,
inError = false,
onBlur,
step,
} = this.props
const { valueToRender } = this.state
const convertedValueToRender = this.getConvertedValueToRender(valueToRender)
return h('div', {
className,
style: {
borderColor: inError ? 'red' : null,
},
onClick: () => {
this.currencyInput && this.currencyInput.focus()
},
}, [
h('div.currency-display__primary-row', [
h('div.currency-display__input-wrapper', [
h('input', {
className: primaryBalanceClassName,
value: `${valueToRender}`,
placeholder: '0',
type: 'number',
readOnly,
...(!readOnly ? {
onChange: e => this.handleChange(e.target.value),
onBlur: () => onBlur(this.getAmount(valueToRender)),
} : {}),
ref: input => { this.currencyInput = input },
style: {
width: this.getInputWidth(valueToRender, readOnly),
},
min: 0,
step,
}),
h('span.currency-display__currency-symbol', primaryCurrency),
]),
]),
h('div', {
className: convertedBalanceClassName,
}, `${convertedValueToRender} ${convertedCurrency.toUpperCase()}`),
])
}
|
