skeletons for verified contracts

pages/verified-contracts.tsx

 import type { NextPage } from 'next';
+import dynamic from 'next/dynamic';
 import Head from 'next/head';
 import React from 'react';
 
 import getNetworkTitle from 'lib/networks/getNetworkTitle';
-import VerifiedContracts from 'ui/pages/VerifiedContracts';
 import Page from 'ui/shared/Page/Page';
+const VerifiedContracts = dynamic(() => import('ui/pages/VerifiedContracts'), { ssr: false });
 
 const VerifiedContractsPage: NextPage = () => {
   const title = getNetworkTitle();

stubs/contract.ts

 import type { SmartContract } from 'types/api/contract';
+import type { VerifiedContract } from 'types/api/contracts';
+
+import { ADDRESS_PARAMS } from './addressParams';
 
 export const CONTRACT_CODE_UNVERIFIED = {
   creation_bytecode: '0x60806040526e',
@@ -38,3 +41,15 @@ export const CONTRACT_CODE_VERIFIED = {
   source_code: 'source_code',
   verified_at: '2023-02-21T14:39:16.906760Z',
 } as unknown as SmartContract;
+
+export const VERIFIED_CONTRACT_INFO: VerifiedContract = {
+  address: { ...ADDRESS_PARAMS, name: 'StubContract' },
+  coin_balance: '30319033612988277',
+  compiler_version: 'v0.8.17+commit.8df45f5f',
+  has_constructor_args: true,
+  language: 'solidity',
+  market_cap: null,
+  optimization_enabled: false,
+  tx_count: 565058,
+  verified_at: '2023-04-10T13:16:33.884921Z',
+};

ui/pages/VerifiedContracts.tsx

@@ -9,6 +9,8 @@ import useIsMobile from 'lib/hooks/useIsMobile';
 import useQueryWithPages from 'lib/hooks/useQueryWithPages';
 import { apos } from 'lib/html-entities';
 import getQueryParamString from 'lib/router/getQueryParamString';
+import { VERIFIED_CONTRACT_INFO } from 'stubs/contract';
+import { generateListStub } from 'stubs/utils';
 import ActionBar from 'ui/shared/ActionBar';
 import DataListDisplay from 'ui/shared/DataListDisplay';
 import FilterInput from 'ui/shared/filters/FilterInput';
@@ -32,9 +34,21 @@ const VerifiedContracts = () => {
 
   const isMobile = useIsMobile();
 
-  const { isError, isLoading, data, isPaginationVisible, pagination, onFilterChange } = useQueryWithPages({
+  const { isError, isPlaceholderData, data, isPaginationVisible, pagination, onFilterChange } = useQueryWithPages({
     resourceName: 'verified_contracts',
     filters: { q: debouncedSearchTerm, filter: type },
+    options: {
+      placeholderData: generateListStub<'verified_contracts'>(
+        VERIFIED_CONTRACT_INFO,
+        50,
+        {
+          next_page_params: {
+            items_count: '50',
+            smart_contract_id: '50',
+          },
+        },
+      ),
+    },
   });
 
   const handleSearchTermChange = React.useCallback((value: string) => {
@@ -107,10 +121,10 @@ const VerifiedContracts = () => {
   const content = sortedData ? (
     <>
       <Show below="lg" ssr={ false }>
-        <VerifiedContractsList data={ sortedData }/>
+        <VerifiedContractsList data={ sortedData } isLoading={ isPlaceholderData }/>
       </Show>
       <Hide below="lg" ssr={ false }>
-        <VerifiedContractsTable data={ sortedData } sort={ sort } onSortToggle={ handleSortToggle }/>
+        <VerifiedContractsTable data={ sortedData } sort={ sort } onSortToggle={ handleSortToggle } isLoading={ isPlaceholderData }/>
       </Hide>
     </>
   ) : null;
@@ -121,7 +135,7 @@ const VerifiedContracts = () => {
       <VerifiedContractsCounters/>
       <DataListDisplay
         isError={ isError }
-        isLoading={ isLoading }
+        isLoading={ false }
         items={ data?.items }
         skeletonProps={{ skeletonDesktopColumns: [ '50%', '130px', '130px', '50%', '80px', '110px' ] }}
         emptyText="There are no verified contracts."

ui/verifiedContracts/VerifiedContractsList.tsx

@@ -5,10 +5,16 @@ import type { VerifiedContract } from 'types/api/contracts';
 
 import VerifiedContractsListItem from './VerifiedContractsListItem';
 
-const VerifiedContractsList = ({ data }: { data: Array<VerifiedContract>}) => {
+const VerifiedContractsList = ({ data, isLoading }: { data: Array<VerifiedContract>; isLoading: boolean }) => {
   return (
     <Box>
-      { data.map((item) => <VerifiedContractsListItem key={ item.address.hash } data={ item }/>) }
+      { data.map((item, index) => (
+        <VerifiedContractsListItem
+          key={ item.address.hash + (isLoading ? index : '') }
+          data={ item }
+          isLoading={ isLoading }
+        />
+      )) }
     </Box>
   );
 };

ui/verifiedContracts/VerifiedContractsListItem.tsx

-import { Box, Flex, Icon } from '@chakra-ui/react';
+import { Box, Flex, Skeleton } from '@chakra-ui/react';
 import BigNumber from 'bignumber.js';
 import React from 'react';
 
@@ -12,14 +12,16 @@ import dayjs from 'lib/date/dayjs';
 import Address from 'ui/shared/address/Address';
 import AddressIcon from 'ui/shared/address/AddressIcon';
 import AddressLink from 'ui/shared/address/AddressLink';
+import Icon from 'ui/shared/chakra/Icon';
 import HashStringShorten from 'ui/shared/HashStringShorten';
 import ListItemMobile from 'ui/shared/ListItemMobile/ListItemMobile';
 
 interface Props {
   data: VerifiedContract;
+  isLoading?: boolean;
 }
 
-const VerifiedContractsListItem = ({ data }: Props) => {
+const VerifiedContractsListItem = ({ data, isLoading }: Props) => {
   const balance = data.coin_balance && data.coin_balance !== '0' ?
     BigNumber(data.coin_balance).div(10 ** appConfig.network.currency.decimals).dp(6).toFormat() :
     '0';
@@ -27,50 +29,50 @@ const VerifiedContractsListItem = ({ data }: Props) => {
   return (
     <ListItemMobile rowGap={ 3 }>
       <Address columnGap={ 2 } overflow="hidden" w="100%">
-        <AddressIcon address={ data.address }/>
-        <AddressLink hash={ data.address.hash } type="address" alias={ data.address.name }/>
-        <Box color="text_secondary" ml="auto">
+        <AddressIcon address={ data.address } isLoading={ isLoading }/>
+        <AddressLink hash={ data.address.hash } type="address" alias={ data.address.name } isLoading={ isLoading }/>
+        <Skeleton isLoaded={ !isLoading } color="text_secondary" ml="auto">
           <HashStringShorten hash={ data.address.hash } isTooltipDisabled/>
-        </Box>
+        </Skeleton>
       </Address>
       <Flex columnGap={ 3 }>
-        <Box fontWeight={ 500 }>Balance { appConfig.network.currency.symbol }</Box>
-        <Box color="text_secondary">
-          { balance }
-        </Box>
+        <Skeleton isLoaded={ !isLoading } fontWeight={ 500 }>Balance { appConfig.network.currency.symbol }</Skeleton>
+        <Skeleton isLoaded={ !isLoading } color="text_secondary">
+          <span>{ balance }</span>
+        </Skeleton>
       </Flex>
       <Flex columnGap={ 3 }>
-        <Box fontWeight={ 500 }>Txs count</Box>
-        <Box color="text_secondary">
-          { data.tx_count ? data.tx_count.toLocaleString() : '0' }
-        </Box>
+        <Skeleton isLoaded={ !isLoading } fontWeight={ 500 }>Txs count</Skeleton>
+        <Skeleton isLoaded={ !isLoading } color="text_secondary">
+          <span>{ data.tx_count ? data.tx_count.toLocaleString() : '0' }</span>
+        </Skeleton>
       </Flex>
       <Flex columnGap={ 3 }>
-        <Box fontWeight={ 500 } flexShrink="0">Compiler</Box>
-        <Flex flexWrap="wrap">
+        <Skeleton isLoaded={ !isLoading } fontWeight={ 500 } flexShrink="0">Compiler</Skeleton>
+        <Skeleton isLoaded={ !isLoading } display="flex" flexWrap="wrap">
           <Box textTransform="capitalize">{ data.language }</Box>
           <Box color="text_secondary" wordBreak="break-all" whiteSpace="pre-wrap"> ({ data.compiler_version })</Box>
-        </Flex>
+        </Skeleton>
       </Flex>
       <Flex columnGap={ 3 }>
-        <Box fontWeight={ 500 }>Optimization</Box>
+        <Skeleton isLoaded={ !isLoading } fontWeight={ 500 }>Optimization</Skeleton>
         { data.optimization_enabled ?
-          <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer"/> :
-          <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer"/> }
+          <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer" isLoading={ isLoading }/> :
+          <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer" isLoading={ isLoading }/> }
       </Flex>
       <Flex columnGap={ 3 }>
-        <Box fontWeight={ 500 }>Constructor args</Box>
+        <Skeleton isLoaded={ !isLoading } fontWeight={ 500 }>Constructor args</Skeleton>
         { data.has_constructor_args ?
-          <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer"/> :
-          <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer"/> }
+          <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer" isLoading={ isLoading }/> :
+          <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer" isLoading={ isLoading }/> }
       </Flex>
       <Flex columnGap={ 3 }>
-        <Box fontWeight={ 500 }>Verified</Box>
+        <Skeleton isLoaded={ !isLoading } fontWeight={ 500 }>Verified</Skeleton>
         <Flex alignItems="center" columnGap={ 2 }>
-          <Icon as={ iconSuccess } boxSize={ 4 } color="green.500"/>
-          <Box color="text_secondary">
-            { dayjs(data.verified_at).fromNow() }
-          </Box>
+          <Icon as={ iconSuccess } boxSize={ 4 } color="green.500" isLoading={ isLoading }/>
+          <Skeleton isLoaded={ !isLoading } color="text_secondary">
+            <span>{ dayjs(data.verified_at).fromNow() }</span>
+          </Skeleton>
         </Flex>
       </Flex>
       { /* <Flex columnGap={ 3 }>

ui/verifiedContracts/VerifiedContractsTable.tsx

@@ -14,9 +14,10 @@ interface Props {
   data: Array<VerifiedContract>;
   sort: Sort | undefined;
   onSortToggle: (field: SortField) => () => void;
+  isLoading?: boolean;
 }
 
-const VerifiedContractsTable = ({ data, sort, onSortToggle }: Props) => {
+const VerifiedContractsTable = ({ data, sort, onSortToggle, isLoading }: Props) => {
   const sortIconTransform = sort?.includes('asc') ? 'rotate(-90deg)' : 'rotate(90deg)';
 
   return (
@@ -25,13 +26,13 @@ const VerifiedContractsTable = ({ data, sort, onSortToggle }: Props) => {
         <Tr>
           <Th width="50%">Contract</Th>
           <Th width="130px" isNumeric>
-            <Link display="flex" alignItems="center" justifyContent="flex-end" onClick={ onSortToggle('balance') } columnGap={ 1 }>
+            <Link display="flex" alignItems="center" justifyContent="flex-end" onClick={ isLoading ? undefined : onSortToggle('balance') } columnGap={ 1 }>
               { sort?.includes('balance') && <Icon as={ arrowIcon } boxSize={ 4 } transform={ sortIconTransform }/> }
                 Balance { appConfig.network.currency.symbol }
             </Link>
           </Th>
           <Th width="130px" isNumeric>
-            <Link display="flex" alignItems="center" justifyContent="flex-end" onClick={ onSortToggle('txs') } columnGap={ 1 }>
+            <Link display="flex" alignItems="center" justifyContent="flex-end" onClick={ isLoading ? undefined : onSortToggle('txs') } columnGap={ 1 }>
               { sort?.includes('txs') && <Icon as={ arrowIcon } boxSize={ 4 } transform={ sortIconTransform }/> }
                 Txs
             </Link>
@@ -43,7 +44,12 @@ const VerifiedContractsTable = ({ data, sort, onSortToggle }: Props) => {
         </Tr>
       </Thead>
       <Tbody>
-        { data.map((item) => <VerifiedContractsTableItem key={ item.address.hash } data={ item }/>) }
+        { data.map((item, index) => (
+          <VerifiedContractsTableItem
+            key={ item.address.hash + (isLoading ? index : '') }
+            data={ item }
+            isLoading={ isLoading }/>
+        )) }
       </Tbody>
     </Table>
   );

ui/verifiedContracts/VerifiedContractsTableItem.tsx

-import { Tr, Td, Icon, Box, Flex, chakra, Tooltip } from '@chakra-ui/react';
+import { Tr, Td, Flex, chakra, Tooltip, Skeleton } from '@chakra-ui/react';
 import BigNumber from 'bignumber.js';
 import React from 'react';
 
@@ -11,13 +11,15 @@ import iconSuccess from 'icons/status/success.svg';
 import dayjs from 'lib/date/dayjs';
 import AddressIcon from 'ui/shared/address/AddressIcon';
 import AddressLink from 'ui/shared/address/AddressLink';
+import Icon from 'ui/shared/chakra/Icon';
 import HashStringShorten from 'ui/shared/HashStringShorten';
 
 interface Props {
   data: VerifiedContract;
+  isLoading?: boolean;
 }
 
-const VerifiedContractsTableItem = ({ data }: Props) => {
+const VerifiedContractsTableItem = ({ data, isLoading }: Props) => {
   const balance = data.coin_balance && data.coin_balance !== '0' ?
     BigNumber(data.coin_balance).div(10 ** appConfig.network.currency.decimals).dp(6).toFormat() :
     '0';
@@ -26,52 +28,58 @@ const VerifiedContractsTableItem = ({ data }: Props) => {
     <Tr>
       <Td>
         <Flex columnGap={ 2 }>
-          <AddressIcon address={ data.address }/>
-          <Flex columnGap={ 2 } flexWrap="wrap" lineHeight={ 6 } w="calc(100% - 32px)">
-            <AddressLink hash={ data.address.hash } type="address" alias={ data.address.name }/>
-            <Box color="text_secondary">
+          <AddressIcon address={ data.address } isLoading={ isLoading }/>
+          <Flex columnGap={ 2 } flexWrap="wrap" w="calc(100% - 32px)">
+            <AddressLink hash={ data.address.hash } type="address" alias={ data.address.name } isLoading={ isLoading } my={ 1 }/>
+            <Skeleton isLoaded={ !isLoading } color="text_secondary" my={ 1 }>
               <HashStringShorten hash={ data.address.hash } isTooltipDisabled/>
-            </Box>
+            </Skeleton>
           </Flex>
         </Flex>
       </Td>
-      <Td isNumeric lineHeight={ 6 }>
+      <Td isNumeric>
+        <Skeleton isLoaded={ !isLoading } display="inline-block" my={ 1 }>
           { balance }
+        </Skeleton>
       </Td>
-      <Td isNumeric lineHeight={ 6 }>
+      <Td isNumeric>
+        <Skeleton isLoaded={ !isLoading } display="inline-block" my={ 1 }>
           { data.tx_count ? data.tx_count.toLocaleString() : '0' }
+        </Skeleton>
       </Td>
-      <Td lineHeight={ 6 }>
+      <Td>
         <Flex flexWrap="wrap" columnGap={ 2 }>
-          <chakra.span textTransform="capitalize">{ data.language }</chakra.span>
-          <chakra.span color="text_secondary" wordBreak="break-all">{ data.compiler_version }</chakra.span>
+          <Skeleton isLoaded={ !isLoading } textTransform="capitalize" my={ 1 }>{ data.language }</Skeleton>
+          <Skeleton isLoaded={ !isLoading } color="text_secondary" wordBreak="break-all" my={ 1 }>
+            <span>{ data.compiler_version }</span>
+          </Skeleton>
         </Flex>
       </Td>
       <Td>
-        <Tooltip label="Optimization">
-          <span>
+        <Tooltip label={ isLoading ? undefined : 'Optimization' }>
+          <chakra.span display="inline-block">
             { data.optimization_enabled ?
-              <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer"/> :
-              <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer"/> }
-          </span>
+              <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer" isLoading={ isLoading }/> :
+              <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer" isLoading={ isLoading }/> }
+          </chakra.span>
         </Tooltip>
-        <Tooltip label="Constructor args">
-          <chakra.span ml={ 3 }>
+        <Tooltip label={ isLoading ? undefined : 'Constructor args' }>
+          <chakra.span display="inline-block" ml={ 3 }>
             { data.has_constructor_args ?
-              <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer"/> :
-              <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer"/> }
+              <Icon as={ iconCheck } boxSize={ 6 } color="green.500" cursor="pointer" isLoading={ isLoading }/> :
+              <Icon as={ iconCross } boxSize={ 6 } color="red.600" cursor="pointer" isLoading={ isLoading }/> }
           </chakra.span>
         </Tooltip>
       </Td>
-      <Td lineHeight={ 6 }>
-        <Flex alignItems="center" columnGap={ 2 }>
-          <Icon as={ iconSuccess } boxSize={ 4 } color="green.500"/>
-          <chakra.span color="text_secondary">
-            { dayjs(data.verified_at).fromNow() }
-          </chakra.span>
+      <Td>
+        <Flex alignItems="center" columnGap={ 2 } my={ 1 }>
+          <Icon as={ iconSuccess } boxSize={ 4 } color="green.500" isLoading={ isLoading }/>
+          <Skeleton isLoaded={ !isLoading } color="text_secondary">
+            <span>{ dayjs(data.verified_at).fromNow() }</span>
+          </Skeleton>
         </Flex>
       </Td>
-      { /* <Td lineHeight={ 6 }>
+      { /* <Td>
         N/A
       </Td> */ }
     </Tr>