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const Component = require('react').Component
const h = require('react-hyperscript')
const inherits = require('util').inherits
const Identicon = require('../identicon')
const { conversionUtil } = require('../../conversion-util')
module.exports = CurrencyDisplay
inherits(CurrencyDisplay, Component)
function CurrencyDisplay () {
Component.call(this)
this.state = {
minWidth: null,
currentScrollWidth: null,
}
}
function isValidInput (text) {
const re = /^([1-9]\d*|0)(\.|\.\d*)?$/
return re.test(text)
}
function resetCaretIfPastEnd (value, event) {
const caretPosition = event.target.selectionStart
if (caretPosition > value.length) {
event.target.setSelectionRange(value.length, value.length)
}
}
CurrencyDisplay.prototype.render = function () {
const {
className,
primaryCurrency,
convertedCurrency,
value = '',
placeholder = '0',
conversionRate,
convertedPrefix = '',
readOnly = false,
handleChange,
} = this.props
const { minWidth } = this.state
const convertedValue = conversionUtil(value, {
fromNumericBase: 'dec',
fromCurrency: primaryCurrency,
toCurrency: convertedCurrency,
conversionRate,
})
return h('div.currency-display', {
className,
}, [
h('div.currency-display__primary-row', [
h('div.currency-display__input-wrapper', [
h('input.currency-display__input', {
value: `${value} ${primaryCurrency}`,
placeholder: `${0} ${primaryCurrency}`,
readOnly,
onChange: (event) => {
let newValue = event.target.value.split(' ')[0]
if (newValue === '') {
handleChange('0')
}
else if (newValue.match(/^0[1-9]$/)) {
handleChange(newValue.match(/[1-9]/)[0])
}
else if (newValue && !isValidInput(newValue)) {
event.preventDefault()
}
else {
handleChange(newValue)
}
},
onKeyUp: event => resetCaretIfPastEnd(value, event),
onClick: event => resetCaretIfPastEnd(value, event),
}),
]),
]),
h('div.currency-display__converted-value', {}, `${convertedPrefix}${convertedValue} ${convertedCurrency}`),
])
}
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