loading ui

app/layout.tsx

@@ -1,6 +1,7 @@
 import type { Metadata } from 'next'
 import { Hanken_Grotesk } from 'next/font/google'
 import '@/styles/globals.css'
+import '@/styles/loading-ui.css'
 
 const hankenGrotesk = Hanken_Grotesk({
   subsets: ['latin'],

components/CalculationBaseOutput/CalculationBase.tsx

@@ -6,34 +6,48 @@ import { usePrices } from '@/hooks'
 import { Label } from '@/components/Label'
 
 export function CalculationBase() {
-  const { prices, isValidating } = usePrices()
+  const { prices, isValidating, isLoading } = usePrices()
+
+  const feedbackClasses = isLoading
+    ? 'isLoading'
+    : isValidating
+    ? 'isValidating'
+    : ''
 
   return (
     <ul className={styles.calculationBase}>
       <li>
         <p>1 ASI</p>
-        <p className={isValidating ? 'isValidating' : ''}>= ${prices.asi}</p>
+        <p>
+          = <span className={feedbackClasses}>${prices.asi}</span>
+        </p>
       </li>
       <li>
         <p>
           1 Fet = {ratioFetToAsi} ASI
           <Label>fixed</Label>
         </p>
-        <p className={isValidating ? 'isValidating' : ''}>= ${prices.fet}</p>
+        <p>
+          = <span className={feedbackClasses}>${prices.fet}</span>
+        </p>
       </li>
       <li>
         <p>
           1 OCEAN = {ratioOceanToAsi} ASI
           <Label>fixed</Label>
         </p>
-        <p className={isValidating ? 'isValidating' : ''}>= ${prices.ocean}</p>
+        <p>
+          = <span className={feedbackClasses}>${prices.ocean}</span>
+        </p>
       </li>
       <li>
         <p>
           1 AGIX = {ratioAgixToAsi} ASI
           <Label>fixed</Label>
         </p>
-        <p className={isValidating ? 'isValidating' : ''}>= ${prices.agix}</p>
+        <p>
+          = <span className={feedbackClasses}>${prices.agix}</span>
+        </p>
       </li>
     </ul>
   )

components/FormAmount/FormAmount.module.css

@@ -3,4 +3,5 @@
   border: 1px solid rgba(var(--foreground-rgb), 0.15);
   border-radius: var(--border-radius);
   overflow: hidden;
+  margin: 0 0.25rem;
 }

components/FormAmount/Inputs/InputAmount.module.css

@@ -3,6 +3,7 @@
   width: 60px;
   padding: 0 0.2rem;
   text-align: center;
+  border-right: 1px solid rgba(var(--foreground-rgb), 0.15);
 }
 
 .input:hover {

components/FormAmount/Inputs/InputToken.module.css

@@ -1,7 +1,26 @@
 .select {
   display: inline-block;
   all: unset;
-  padding: 0 0.75rem 0 0;
+  padding: 0 0.5rem;
+}
+
+.select:hover:not(.select[disabled]) {
+  background-color: rgba(var(--background-rgb), 0.5);
+}
+
+.select:focus-within {
+  outline: none;
+  background-color: rgba(var(--background-rgb), 0.9);
+}
+
+@media (prefers-color-scheme: dark) {
+  .select:hover:not(.select[disabled]) {
+    background-color: rgba(var(--foreground-rgb), 0.1);
+  }
+
+  .select:focus-within {
+    background-color: rgba(var(--foreground-rgb), 0.2);
+  }
 }
 
 .selectWrapper {
@@ -10,7 +29,8 @@
 
 .icon {
   position: absolute;
-  right: 0.175rem;
+  right: 0.1rem;
+  width: 1em;
   height: 100%;
   z-index: -1;
 }

components/ResultRow/ResultRow.module.css

@@ -11,7 +11,7 @@
 
 .resultLine {
   display: inline-grid;
-  grid-template-columns: 24px 2fr 3fr;
+  grid-template-columns: 24px 40% 40%;
   gap: 0.5rem;
   align-items: center;
   width: 100%;

components/ResultRow/ResultRow.tsx

@@ -11,6 +11,7 @@ type Props = {
   amountFiat: number
   amountOriginalFiat?: number
   isValidating: boolean
+  isLoading: boolean
 }
 
 export function Result({
@@ -19,36 +20,48 @@ export function Result({
   amountAsi,
   amountFiat,
   amountOriginalFiat,
-  isValidating
+  isValidating,
+  isLoading
 }: Props) {
+  const feedbackClasses = isLoading
+    ? 'isLoading'
+    : isValidating
+    ? 'isValidating'
+    : ''
+
   return (
     <div className={styles.result}>
       <div className={styles.resultLine}>
         <TokenLogo token={token} />
 
-        <span className={isValidating ? 'isValidating' : ''}>
-          {formatNumber(amount || 0, token?.symbol || '')}
-        </span>
+        <p>
+          <span className={feedbackClasses}>
+            {formatNumber(amount || 0, token?.symbol || '')}
+          </span>
+        </p>
 
         {amountOriginalFiat ? (
-          <span className={styles.fiat}>
-            {formatNumber(amountOriginalFiat || 0, 'USD')}
-          </span>
+          <p>
+            <span className={`${styles.fiat} ${feedbackClasses}`}>
+              {formatNumber(amountOriginalFiat || 0, 'USD')}
+            </span>
+          </p>
         ) : null}
       </div>
+
       <div className={styles.resultLine}>
         <ArrowRightIcon className={styles.iconArrow} />
-        <strong
-          title={`${amountAsi}`}
-          className={isValidating ? 'isValidating' : ''}
-        >
-          {formatNumber(amountAsi || 0, 'ASI')}
-        </strong>
-        <strong
-          className={`${styles.fiat} ${isValidating ? 'isValidating' : ''}`}
-        >
-          {formatNumber(amountFiat || 0, 'USD')}
-        </strong>
+
+        <p>
+          <strong title={`${amountAsi}`} className={feedbackClasses}>
+            {formatNumber(amountAsi || 0, 'ASI')}
+          </strong>
+        </p>
+        <p>
+          <strong className={`${styles.fiat} ${feedbackClasses}`}>
+            {formatNumber(amountFiat || 0, 'USD')}
+          </strong>
+        </p>
       </div>
     </div>
   )

components/Strategies/Buy.tsx

@@ -10,7 +10,7 @@ import { FormAmount } from '@/components/FormAmount'
 import { getTokenBySymbol } from '@/utils'
 
 export function Buy() {
-  const { prices, isValidating } = usePrices()
+  const { prices, isValidating, isLoading } = usePrices()
   const [amount, setAmount] = useState(100)
   const [debouncedAmount] = useDebounce(amount, 500)
 
@@ -33,6 +33,7 @@ export function Buy() {
             : 0
         }
         isValidating={isValidating}
+        isLoading={isLoading}
       />
       <Result
         token={getTokenBySymbol('AGIX')}
@@ -46,6 +47,7 @@ export function Buy() {
             : 0
         }
         isValidating={isValidating}
+        isLoading={isLoading}
       />
       <Result
         token={getTokenBySymbol('FET')}
@@ -59,6 +61,7 @@ export function Buy() {
             : 0
         }
         isValidating={isValidating}
+        isLoading={isLoading}
       />
     </div>
   )

components/Strategies/Swap/Results.tsx

@@ -5,6 +5,10 @@ import { fetcher, getTokenAddressBySymbol, getTokenBySymbol } from '@/utils'
 import useSWR from 'swr'
 import { TokenSymbol } from '@/types'
 
+const options = {
+  keepPreviousData: true // so loading UI can kick in properly
+}
+
 export function SwapResults({
   tokenSymbol,
   amount
@@ -12,30 +16,49 @@ export function SwapResults({
   tokenSymbol: TokenSymbol
   amount: number
 }) {
-  const { prices, isValidating: isValidatingPrices } = usePrices()
+  const {
+    prices,
+    isValidating: isValidatingPrices,
+    isLoading: isLoadingPrices
+  } = usePrices()
 
   // -> AGIX
-  const { data: dataSwapToAgix, isValidating: isValidatingToAgix } = useSWR(
+  const {
+    data: dataSwapToAgix,
+    isValidating: isValidatingToAgix,
+    isLoading: isLoadingToAgix
+  } = useSWR(
     `/api/quote/?tokenIn=${getTokenAddressBySymbol(
       tokenSymbol
     )}&tokenOut=${getTokenAddressBySymbol('AGIX')}&amountIn=${amount}`,
-    fetcher
+    fetcher,
+    options
   )
 
   // -> FET
-  const { data: dataSwapToFet, isValidating: isValidatingToFet } = useSWR(
+  const {
+    data: dataSwapToFet,
+    isValidating: isValidatingToFet,
+    isLoading: isLoadingToFet
+  } = useSWR(
     `/api/quote/?tokenIn=${getTokenAddressBySymbol(
       tokenSymbol
     )}&tokenOut=${getTokenAddressBySymbol('FET')}&amountIn=${amount}`,
-    fetcher
+    fetcher,
+    options
   )
 
   // -> OCEAN
-  const { data: dataSwapToOcean, isValidating: isValidatingToOcean } = useSWR(
+  const {
+    data: dataSwapToOcean,
+    isValidating: isValidatingToOcean,
+    isLoading: isLoadingToOcean
+  } = useSWR(
     `/api/quote/?tokenIn=${getTokenAddressBySymbol(
       tokenSymbol
     )}&tokenOut=${getTokenAddressBySymbol('OCEAN')}&amountIn=${amount}`,
-    fetcher
+    fetcher,
+    options
   )
 
   return (
@@ -66,6 +89,7 @@ export function SwapResults({
             : undefined
         }
         isValidating={isValidatingToOcean || isValidatingPrices}
+        isLoading={isLoadingToOcean || isLoadingPrices}
       />
 
       <Result
@@ -90,6 +114,7 @@ export function SwapResults({
           prices.agix
         }
         isValidating={isValidatingToAgix || isValidatingPrices}
+        isLoading={isLoadingToAgix || isLoadingPrices}
       />
 
       <Result
@@ -110,6 +135,7 @@ export function SwapResults({
           prices.asi
         }
         isValidating={isValidatingToFet || isValidatingPrices}
+        isLoading={isLoadingToFet || isLoadingPrices}
       />
     </>
   )

styles/_animations.css

@@ -1,15 +0,0 @@
-.isValidating {
-  animation: flicker 2s infinite ease-out;
-}
-
-@keyframes flicker {
-  0% {
-    opacity: 0.1;
-  }
-  50% {
-    opacity: 1;
-  }
-  100% {
-    opacity: 0.1;
-  }
-}

styles/globals.css

@@ -40,5 +40,3 @@ ul {
     color-scheme: dark;
   }
 }
-
-@import './_animations.css';

styles/loading-ui.css

@@ -0,0 +1,53 @@
+.isLoading {
+  background-color: rgba(0, 0, 0, 0) !important;
+  background-image: linear-gradient(
+    -45deg,
+    rgba(var(--foreground-rgb), 0) 0,
+    rgba(var(--foreground-rgb), 0.1) 50%,
+    rgba(var(--foreground-rgb), 0) 100%
+  ) !important;
+  background-size: 800% 800% !important;
+  color: rgba(0, 0, 0, 0) !important;
+  border-color: rgba(0, 0, 0, 0) !important;
+  border-radius: var(--border-radius) !important;
+  user-select: none;
+  cursor: wait;
+  animation: loading 3s infinite ease-out !important;
+}
+
+.isLoading * {
+  visibility: hidden !important;
+}
+
+.isLoading:empty::after,
+.isLoading *:empty::after {
+  content: '\00a0';
+}
+
+@keyframes loading {
+  0% {
+    background-position: 0% 50%;
+  }
+  50% {
+    background-position: 100% 50%;
+  }
+  100% {
+    background-position: 0% 50%;
+  }
+}
+
+.isValidating {
+  animation: flicker 2s infinite ease-out;
+}
+
+@keyframes flicker {
+  0% {
+    opacity: 0.1;
+  }
+  50% {
+    opacity: 1;
+  }
+  100% {
+    opacity: 0.1;
+  }
+}