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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')
module.exports = HexAsDecimalInput
inherits(HexAsDecimalInput, Component)
function HexAsDecimalInput () {
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 { value, onChange } = props
const toEth = props.toEth
const suffix = props.suffix
const decimalValue = decimalize(value, toEth)
const style = props.style
return (
h('.flex-row', {
style: {
alignItems: 'flex-end',
lineHeight: '13px',
fontFamily: 'Montserrat Light',
textRendering: 'geometricPrecision',
},
}, [
h('input.ether-balance.ether-balance-amount', {
style: extend({
display: 'block',
textAlign: 'right',
backgroundColor: 'transparent',
border: '1px solid #bdbdbd',
}, style),
value: decimalValue,
onChange: (event) => {
const hexString = hexify(event.target.value)
onChange(hexString)
},
}),
h('div', {
style: {
color: ' #AEAEAE',
fontSize: '12px',
marginLeft: '5px',
marginRight: '6px',
width: '20px',
},
}, suffix),
])
)
}
function hexify (decimalString) {
const hexBN = new BN(decimalString, 10)
return '0x' + hexBN.toString('hex')
}
function decimalize (input, toEth) {
const strippedInput = ethUtil.stripHexPrefix(input)
const inputBN = new BN(strippedInput, 'hex')
return inputBN.toString(10)
}
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