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Merged
sidvishnoi merged 2 commits into from
May 8, 2026
Merged

refactor(components/widget): extract amount component #704

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64e9cb7
refactor(components/widget): extract `amount` component
sidvishnoi May 8, 2026
5911ad7
Merge branch 'main' into widget-amount-component
sidvishnoi May 8, 2026
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115 changes: 115 additions & 0 deletions components/src/widget/views/amount/amount.css
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Original file line number Diff line number Diff line change
@@ -0,0 +1,115 @@
:host {
font-family: var(--wm-font-family, system-ui, sans-serif);
display: block;
flex: 0;

--primary-color: var(--wm-primary-color, #56b7b5);
--background-color: var(--wm-background-color, #ffffff);
--text-color: var(--wm-text-color, #363636);
}

fieldset {
border: 0;
padding: 0;
margin: 0;
width: 100%;
}

.preset-buttons {
display: flex;
justify-content: center;
gap: 12px;
margin: var(--Spacings-lg, 24px) 0 var(--Spacings-lg, 24px) 0;
}

.preset-buttons button {
display: flex;
width: calc(var(--Font-Size-text-base) + 2.75rem);
height: calc(var(--Font-Size-text-base) + 2.75rem);
cursor: pointer;
padding: 16px 12px;
justify-content: center;
align-items: center;
gap: 10px;
border-radius: 100px;
border: 1px solid var(--text-color, #c9c9c9);

background: var(--background-color, #f2fbf9);
color: var(--Text-paragraph-standard, #7b7b7b);
font-family: var(--Font-Family-Inter, Inter);
font-size: var(--Font-Size-text-base, 16px);
font-style: normal;
font-weight: var(--Font-Weight-Bold, 700);
line-height: var(--Font-Line-Height-md, 24px);
}

.preset-buttons button:hover {
background: #0000002f;
}

.preset-buttons [aria-checked='true'] {
background: color-mix(
in srgb,
var(--primary-color, #f2fbf9) 45%,
transparent
);
border: 1px solid var(--primary-color, #5b5380);
}

.currency-symbol {
position: absolute;
left: var(--Spacings-md, 12px);
top: 50%;
transform: translateY(-50%);
color: var(--Text-paragraph-standard, #363636);
font-family: var(--Font-Family-Inter, Inter);
font-size: var(--Font-Size-text-base, 16px);
font-weight: var(--Font-Weight-Regular, 400);
pointer-events: none;
z-index: 1;
}

.form-input {
display: flex;
flex-direction: column;
align-items: flex-start;
gap: 4px;
align-self: stretch;
}

.form-input[aria-invalid='true'] {
border-color: var(--Colors-red-500, #ef4444);
}

.form-label {
display: flex;
justify-content: flex-start;
align-items: center;
gap: 2px;
color: var(--Text-paragraph-standard, #363636);
font-family: var(--Font-Family-Inter, Inter);
font-size: var(--Font-Size-text-xs, 12px);
font-style: normal;
font-weight: var(--Font-Weight-Regular, 400);
line-height: var(--Font-Line-Height-xs, 16px);
}

.amount-input-wrapper {
position: relative;
width: 100%;
margin-top: 4px;
}

.form-input.with-currency {
padding-left: calc(var(--Font-Size-text-base) + 2rem);
border-width: 2px;
}

.amount-error {
color: var(--Colors-red-500, #ef4444);
font-family: var(--Font-Family-Inter, Inter);
font-size: var(--Font-Size-text-sm, 14px);
font-style: normal;
font-weight: var(--Font-Weight-Regular, 400);
line-height: var(--Font-Line-Height-sm, 20px);
}
148 changes: 148 additions & 0 deletions components/src/widget/views/amount/amount.ts
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import { LitElement, html, nothing, unsafeCSS } from 'lit'
import { property, query, state } from 'lit/decorators.js'
import { getCurrencySymbol } from '@c/utils'
import styles from './amount.css?raw'
import stylesBase from '../confirmation/confirmation.css?raw'

export interface AmountChangeEventDetail {
amount: number
onComplete: (error?: string | null) => void
}

export class PaymentAmount extends LitElement {
#debounceTimer: ReturnType<typeof setTimeout> | null = null

@property({ type: String }) currency = 'USD'
@property({ type: Array }) presets: number[] = [1, 5, 10]
@property({ type: Number }) value = 0

@query('input') private _inputEl!: HTMLInputElement

@state() private _errorMsg: string | null = null

static styles = [unsafeCSS(stylesBase), unsafeCSS(styles)]

connectedCallback(): void {
super.connectedCallback()
}

protected firstUpdated() {
this._inputEl.focus()
}

private _handleInput(e: Event) {
const el = e.target as HTMLInputElement
const rawValue = el.value

// assumes assetScale=2 here
const validFormat = /^\d*\.?\d{0,2}$/.test(rawValue)
if (!validFormat) {
el.value = this.value === 0 ? '' : this.value.toString()
return
}

const newValue = Number.parseFloat(rawValue) || 0
if (newValue === this.value) return
if (Number.isNaN(newValue)) return

this.value = newValue

this._errorMsg = null
this._processUpdate()
}

private _handlePresetClick(presetAmount: number) {
this._errorMsg = null
this.value = presetAmount
this._processUpdate(true)
}

private _processUpdate(immediate = false) {
if (this.#debounceTimer) clearTimeout(this.#debounceTimer)
this.#debounceTimer = setTimeout(
() => this.onChange(this.value),
immediate ? 0 : 750,
)
}

private onChange(amount: number) {
this.dispatchEvent(
new CustomEvent<AmountChangeEventDetail>('change', {
detail: {
amount,
onComplete: (error) => (this._errorMsg = error || null),
},
}),
)
}

render() {
const currencySymbol = getCurrencySymbol(this.currency)
const hasError = !!this._errorMsg

return html`
<fieldset>
<legend id="amount-label" class="form-label">Amount</legend>

<div class="amount-input-wrapper">
<span class="currency-symbol">${currencySymbol}</span>
<input
id="amount-input"
aria-labelledby="amount-label"
class="form-input with-currency"
type="text"
inputmode="decimal"
placeholder="1.5"
.value=${this.value === 0 ? '' : this.value.toString()}
@input=${this._handleInput}
@keydown=${allowOnlyNumericInput}
aria-invalid=${hasError}
aria-describedby=${hasError ? 'amount-error' : nothing}
@paste=${(ev: Event) => ev.preventDefault()}
autocomplete="off"
spellcheck="false"
/>
</div>
<p
id="amount-error"
class="amount-error"
role="alert"
>
${hasError ? this._errorMsg : nothing}
</p>
</div>

<div class="preset-buttons" role="radiogroup" aria-label="Preset amounts">
${this.presets.map(
(amount) => html`
<button
type="button"
role="radio"
aria-checked="${this.value === amount}"
@click=${() => this._handlePresetClick(amount)}
>
${currencySymbol}${amount}
</button>
`,
)}
</fieldset>
`
}
}

function allowOnlyNumericInput(
ev: KeyboardEvent & { currentTarget: HTMLInputElement },
) {
if (ev.key.length > 1 || ev.ctrlKey || ev.metaKey) return
if (ev.key === 'Tab') return
if (
!charIsNumber(ev.key) ||
(ev.key === '.' && ev.currentTarget.value.includes('.'))
) {
ev.preventDefault()
}
}

function charIsNumber(char?: string) {
return !!(char || '').match(/\d|\./)
}
64 changes: 0 additions & 64 deletions components/src/widget/views/confirmation/confirmation.css
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Original file line number Diff line number Diff line change
Expand Up @@ -69,13 +69,6 @@
flex: 1 1 auto;
}

.preset-buttons {
display: flex;
justify-content: center;
gap: 12px;
margin: var(--Spacings-lg, 24px) 0 var(--Spacings-lg, 24px) 0;
}

.enter-amount-description {
color: var(--Text-paragraph-standard, #363636);
font-family: var(--Font-Family-Inter, Inter);
Expand All @@ -85,40 +78,6 @@
line-height: var(--Font-Line-Height-sm, 20px);
}

.preset-btn {
display: flex;
width: calc(var(--Font-Size-text-base) + 2.75rem);
height: calc(var(--Font-Size-text-base) + 2.75rem);
cursor: pointer;
padding: 16px 12px;
justify-content: center;
align-items: center;
gap: 10px;
border-radius: 100px;
border: 1px solid var(--text-color, #c9c9c9);

background: var(--background-color, #f2fbf9);
color: var(--Text-paragraph-standard, #7b7b7b);
font-family: var(--Font-Family-Inter, Inter);
font-size: var(--Font-Size-text-base, 16px);
font-style: normal;
font-weight: var(--Font-Weight-Bold, 700);
line-height: var(--Font-Line-Height-md, 24px);
}

.preset-btn:hover {
background: #0000002f;
}

.preset-btn.selected {
background: color-mix(
in srgb,
var(--primary-color, #f2fbf9) 45%,
transparent
);
border: 1px solid var(--primary-color, #5b5380);
}

.widget-body p,
.widget-body label:not(.form-label) {
color: var(--Text-paragraph-standard, #363636);
Expand All @@ -136,19 +95,6 @@
height: 100%;
}

.currency-symbol {
position: absolute;
left: var(--Spacings-md, 12px);
top: 50%;
transform: translateY(-50%);
color: var(--Text-paragraph-standard, #363636);
font-family: var(--Font-Family-Inter, Inter);
font-size: var(--Font-Size-text-base, 16px);
font-weight: var(--Font-Weight-Regular, 400);
pointer-events: none;
z-index: 1;
}

.payment-details {
display: flex;
padding: var(--Spacings-md, 12px);
Expand Down Expand Up @@ -352,16 +298,6 @@
line-height: var(--Font-Line-Height-xs, 16px);
}

.amount-input-wrapper {
position: relative;
width: 100%;
}

.form-input.with-currency {
padding-left: calc(var(--Font-Size-text-base) + 2rem);
border: 2px solid var(--Colors-silver-300, #c9c9c9);
}

.form-input,
.payment-note-input {
width: 100%;
Expand Down
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