aboutsummaryrefslogtreecommitdiffstats
path: root/ui/app/components/hex-as-decimal-input.js
blob: be7ba4c9e180a47700afa6ad6660d04dd1355291 (plain) (blame)
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
const Component = require('react').Component
const h = require('react-hyperscript')
const inherits = require('util').inherits
const ethUtil = require('ethereumjs-util')
const BN = ethUtil.BN
const extend = require('xtend')
const connect = require('../metamask-connect')

module.exports = connect()(HexAsDecimalInput)

inherits(HexAsDecimalInput, Component)
function HexAsDecimalInput () {
  this.state = { invalid: null }
  Component.call(this)
}

/* Hex as Decimal Input
 *
 * A component for allowing easy, decimal editing
 * of a passed in hex string value.
 *
 * On change, calls back its `onChange` function parameter
 * and passes it an updated hex string.
 */

HexAsDecimalInput.prototype.render = function () {
  const props = this.props
  const state = this.state

  const { value, onChange, min, max } = props

  const toEth = props.toEth
  const suffix = props.suffix
  const decimalValue = decimalize(value, toEth)
  const style = props.style

  return (
    h('.flex-column', [
      h('.flex-row', {
        style: {
          alignItems: 'flex-end',
          lineHeight: '13px',
          fontFamily: 'Montserrat Light',
          textRendering: 'geometricPrecision',
        },
      }, [
        h('input.hex-input', {
          type: 'number',
          required: true,
          min: min,
          max: max,
          style: extend({
            display: 'block',
            textAlign: 'right',
            backgroundColor: 'transparent',
            border: '1px solid #bdbdbd',

          }, style),
          value: parseInt(decimalValue),
          onBlur: (event) => {
            this.updateValidity(event)
          },
          onChange: (event) => {
            this.updateValidity(event)
            const hexString = (event.target.value === '') ? '' : hexify(event.target.value)
            onChange(hexString)
          },
          onInvalid: (event) => {
            const msg = this.constructWarning()
            if (msg === state.invalid) {
              return
            }
            this.setState({ invalid: msg })
            event.preventDefault()
            return false
          },
        }),
        h('div', {
          style: {
            color: ' #AEAEAE',
            fontSize: '12px',
            marginLeft: '5px',
            marginRight: '6px',
            width: '20px',
          },
        }, suffix),
      ]),

      state.invalid ? h('span.error', {
        style: {
          position: 'absolute',
          right: '0px',
          textAlign: 'right',
          transform: 'translateY(26px)',
          padding: '3px',
          background: 'rgba(255,255,255,0.85)',
          zIndex: '1',
          textTransform: 'capitalize',
          border: '2px solid #E20202',
        },
      }, state.invalid) : null,
    ])
  )
}

HexAsDecimalInput.prototype.setValid = function (message) {
  this.setState({ invalid: null })
}

HexAsDecimalInput.prototype.updateValidity = function (event) {
  const target = event.target
  const value = this.props.value
  const newValue = target.value

  if (value === newValue) {
    return
  }

  const valid = target.checkValidity()
  if (valid) {
    this.setState({ invalid: null })
  }
}

HexAsDecimalInput.prototype.constructWarning = function () {
  const { name, min, max } = this.props
  let message = name ? name + ' ' : ''

  if (min && max) {
    message += this.props.t('betweenMinAndMax', [min, max])
  } else if (min) {
    message += this.props.t('greaterThanMin', [min])
  } else if (max) {
    message += this.props.t('lessThanMax', [max])
  } else {
    message += this.props.t('invalidInput')
  }

  return message
}

function hexify (decimalString) {
  const hexBN = new BN(parseInt(decimalString), 10)
  return '0x' + hexBN.toString('hex')
}

function decimalize (input, toEth) {
  if (input === '') {
    return ''
  } else {
    const strippedInput = ethUtil.stripHexPrefix(input)
    const inputBN = new BN(strippedInput, 'hex')
    return inputBN.toString(10)
  }
}