Made LoadingIndicator component more flexible (#18145)

refs https://github.com/TryGhost/Product/issues/3849

- Added small and medium variants of `LoadingIndicator` component
- Added `Loading` prop to `Button` component, which uses `LoadingIndicator`
- Updated instances of `Modal` component so they use the new `LoadingIndicator`

apps/admin-x-settings/src/admin-x-ds/global/Button.stories.tsx

@@ -82,3 +82,11 @@ export const IconSmall: Story = {
         iconColorClass: 'text-white'
     }
 };
+
+export const Loading: Story = {
+    args: {
+        loading: true,
+        color: 'green',
+        label: 'Button'
+    }
+};

apps/admin-x-settings/src/admin-x-ds/global/Button.tsx

@@ -1,5 +1,6 @@
 import Icon from './Icon';
 import React, {HTMLProps} from 'react';
+import {LoadingIndicator, LoadingIndicatorColor, LoadingIndicatorSize} from './LoadingIndicator';
 
 export type ButtonColor = 'clear' | 'grey' | 'black' | 'green' | 'red' | 'white' | 'outline';
 export type ButtonSize = 'sm' | 'md';
@@ -18,6 +19,9 @@ export interface ButtonProps extends Omit<HTMLProps<HTMLButtonElement>, 'label'
     unstyled?: boolean;
     className?: string;
     tag?: string;
+    loading?: boolean;
+    loadingIndicatorSize?: LoadingIndicatorSize;
+    loadingIndicatorColor?: LoadingIndicatorColor;
     onClick?: (e?:React.MouseEvent<HTMLElement>) => void;
 }
 
@@ -34,6 +38,8 @@ const Button: React.FC<ButtonProps> = ({
     unstyled = false,
     className = '',
     tag = 'button',
+    loading = false,
+    loadingIndicatorColor,
     onClick,
     ...props
 }) => {
@@ -51,24 +57,31 @@ const Button: React.FC<ButtonProps> = ({
         switch (color) {
         case 'black':
             styles += link ? ' text-black dark:text-white hover:text-grey-800' : ` bg-black text-white dark:bg-white dark:text-black ${!disabled && 'hover:bg-grey-900'}`;
+            loadingIndicatorColor = 'light';
             break;
         case 'grey':
             styles += link ? ' text-black dark:text-white hover:text-grey-800' : ` bg-grey-100 text-black dark:bg-grey-900 dark:text-white ${!disabled && 'hover:!bg-grey-300 dark:hover:!bg-grey-800'}`;
+            loadingIndicatorColor = 'dark';
             break;
         case 'green':
             styles += link ? ' text-green hover:text-green-400' : ` bg-green text-white ${!disabled && 'hover:bg-green-400'}`;
+            loadingIndicatorColor = 'light';
             break;
         case 'red':
             styles += link ? ' text-red hover:text-red-400' : ` bg-red text-white ${!disabled && 'hover:bg-red-400'}`;
+            loadingIndicatorColor = 'light';
             break;
         case 'white':
             styles += link ? ' text-white hover:text-white dark:text-black dark:hover:text-grey-800' : ` bg-white dark:bg-black text-black dark:text-white`;
+            loadingIndicatorColor = 'dark';
             break;
         case 'outline':
             styles += link ? ' text-black dark:text-white hover:text-grey-800' : `text-black border border-grey-300 bg-transparent dark:border-grey-800 dark:text-white ${!disabled && 'hover:!border-black dark:hover:!border-white'}`;
+            loadingIndicatorColor = 'dark';
             break;
         default:
             styles += link ? ' text-black dark:text-white hover:text-grey-800' : ` text-black dark:text-white dark:hover:bg-grey-900 ${!disabled && 'hover:bg-grey-200'}`;
+            loadingIndicatorColor = 'dark';
             break;
         }
 
@@ -80,10 +93,16 @@ const Button: React.FC<ButtonProps> = ({
 
     const iconClasses = label && icon && !hideLabel ? 'mr-1.5' : '';
 
+    let labelClasses = '';
+    labelClasses += (label && hideLabel) ? 'sr-only' : '';
+    labelClasses += loading ? 'invisible' : '';
+
     const buttonChildren = <>
         {icon && <Icon className={iconClasses} colorClass={iconColorClass} name={icon} size={size === 'sm' ? 'sm' : 'md'} />}
-        {(label && hideLabel) ? <span className="sr-only">{label}</span> : label}
+        <span className={labelClasses}>{label}</span>
+        {loading && <div className='absolute flex'><LoadingIndicator color={loadingIndicatorColor} size={size}/><span className='sr-only'>Loading...</span></div>}
     </>;
+    
     const buttonElement = React.createElement(tag, {className: styles,
         disabled: disabled,
         type: 'button',

apps/admin-x-settings/src/admin-x-ds/global/LoadingIndicator.stories.tsx

@@ -1,15 +1,15 @@
 import type {Meta, StoryObj} from '@storybook/react';
 
-import {CenteredLoadingIndicator} from './LoadingIndicator';
+import {LoadingIndicator} from './LoadingIndicator';
 
 const meta = {
     title: 'Global / Loading indicator',
-    component: CenteredLoadingIndicator,
+    component: LoadingIndicator,
     tags: ['autodocs']
-} satisfies Meta<typeof CenteredLoadingIndicator>;
+} satisfies Meta<typeof LoadingIndicator>;
 
 export default meta;
-type Story = StoryObj<typeof CenteredLoadingIndicator>;
+type Story = StoryObj<typeof LoadingIndicator>;
 
 export const Default: Story = {
     args: {
@@ -19,3 +19,48 @@ export const Default: Story = {
         }
     }
 };
+
+export const Small: Story = {
+    args: {
+        delay: 1000,
+        size: 'sm',
+        color: 'dark',
+        style: {
+            height: '400px'
+        }
+    }
+};
+
+export const Medium: Story = {
+    args: {
+        delay: 1000,
+        size: 'md',
+        color: 'dark',
+        style: {
+            height: '400px'
+        }
+    }
+};
+
+export const Large: Story = {
+    args: {
+        delay: 1000,
+        size: 'lg',
+        color: 'dark',
+        style: {
+            height: '400px'
+        }
+    }
+};
+
+export const LightColor: Story = {
+    args: {
+        delay: 1000,
+        size: 'lg',
+        color: 'light',
+        style: {
+            height: '400px',
+            backgroundColor: 'tomato'
+        }
+    }
+};

apps/admin-x-settings/src/admin-x-ds/global/LoadingIndicator.tsx

@@ -1,19 +1,16 @@
 import React from 'react';
 
-export const LoadingIndicator: React.FC = () => {
+export type LoadingIndicatorSize = 'sm' | 'md' | 'lg';
-    return (
+export type LoadingIndicatorColor = 'light' | 'dark';
-        <div>
-            <div className="relative mx-0 my-[-0.5] box-border inline-block h-[50px] w-[50px] animate-spin rounded-full border border-[rgba(0,0,0,0.1)] before:z-10 before:mt-[7px] before:block before:h-[7px] before:w-[7px] before:rounded-full before:bg-[#4C5156] before:content-['']"></div>
-        </div>
-    );
-};
 
-type CenteredLoadingIndicatorProps = {
+type LoadingIndicatorProps = {
+    size?: LoadingIndicatorSize;
+    color?: LoadingIndicatorColor;
     delay?: number;
     style?: React.CSSProperties;
 };
 
-export const CenteredLoadingIndicator: React.FC<CenteredLoadingIndicatorProps> = ({delay, style}) => {
+export const LoadingIndicator: React.FC<LoadingIndicatorProps> = ({size, color, delay, style}) => {
     const [show, setShow] = React.useState(!delay);
 
     React.useEffect(() => {
@@ -27,9 +24,40 @@ export const CenteredLoadingIndicator: React.FC<CenteredLoadingIndicatorProps> =
         }
     }, [delay]);
 
+    let styles = `relative mx-0 my-[-0.5] box-border inline-block animate-spin rounded-full before:z-10 before:block before:rounded-full before:content-[''] `;
+
+    switch (size) {
+    case 'sm':
+        styles += ' h-[16px] w-[16px] border-2 before:mt-[10px] before:h-[3px] before:w-[3px] ';
+        break;
+    case 'md':
+        styles += ' h-[20px] w-[20px] border-2 before:mt-[13px] before:h-[3px] before:w-[3px] ';
+        break;
+    case 'lg':
+    default:
+        styles += ' h-[50px] w-[50px] border before:mt-[7px] before:h-[7px] before:w-[7px] ';
+        break;
+    }
+
+    switch (color) {
+    case 'light':
+        styles += ' border-white/20 before:bg-white ';
+        break;
+    case 'dark':
+    default:
+        styles += ' border-black/10 before:bg-black ';
+        break;
+    }
+
+    if (size === 'lg') {
         return (
             <div className={`flex h-64 items-center justify-center transition-opacity ${show ? 'opacity-100' : 'opacity-0'}`} style={style}>
-            <LoadingIndicator />
+                <div className={styles}></div>
             </div>
         );
+    } else {
+        return (
+            <div className={styles}></div>
+        );
+    }
 };

apps/admin-x-settings/src/admin-x-ds/global/Table.stories.tsx

@@ -30,6 +30,22 @@ const tableRows = (
             <TableCell>Jamie Larson</TableCell>
             <TableCell>jamie@example.com</TableCell>
         </TableRow>
+        <TableRow>
+            <TableCell>Jamie Larson</TableCell>
+            <TableCell>jamie@example.com</TableCell>
+        </TableRow>
+        <TableRow>
+            <TableCell>Jamie Larson</TableCell>
+            <TableCell>jamie@example.com</TableCell>
+        </TableRow>
+        <TableRow>
+            <TableCell>Jamie Larson</TableCell>
+            <TableCell>jamie@example.com</TableCell>
+        </TableRow>
+        <TableRow>
+            <TableCell>Jamie Larson</TableCell>
+            <TableCell>jamie@example.com</TableCell>
+        </TableRow>
     </>
 );
 
@@ -42,3 +58,19 @@ export const Default: Story = {
     },
     decorators: [(_story: () => ReactNode) => (<div style={{maxWidth: '600px'}}>{_story()}</div>)]
 };
+
+export const WithPageTitle: Story = {
+    args: {
+        pageTitle: 'This is a page title',
+        children: tableRows
+    }
+};
+
+export const Loading: Story = {
+    args: {
+        children: tableRows,
+        isLoading: true,
+        hint: 'This is a hint',
+        hintSeparator: true
+    }
+};

apps/admin-x-settings/src/admin-x-ds/global/Table.tsx

@@ -4,7 +4,7 @@ import Pagination from './Pagination';
 import React from 'react';
 import Separator from './Separator';
 import clsx from 'clsx';
-import {CenteredLoadingIndicator} from './LoadingIndicator';
+import {LoadingIndicator} from './LoadingIndicator';
 import {PaginationData} from '../../hooks/usePagination';
 
 interface TableProps {
@@ -69,6 +69,7 @@ const Table: React.FC<TableProps> = ({children, borderTop, hint, hintSeparator,
         <>
             <div className='w-full overflow-x-auto'>
                 {pageTitle && <Heading>{pageTitle}</Heading>}
+              
                 {/* TODO: make this div have the same height across all pages */}
                 <div>
                     {!isLoading && <table ref={table} className={tableClasses}>
@@ -76,12 +77,14 @@ const Table: React.FC<TableProps> = ({children, borderTop, hint, hintSeparator,
                             {children}
                         </tbody>
                     </table>}
-                    {isLoading && <CenteredLoadingIndicator delay={200} style={loadingStyle} />}
                 </div>
+
+                {isLoading && <LoadingIndicator delay={200} size='lg' style={loadingStyle} />}
+
                 {(hint || pagination) &&
                 <div className="-mt-px">
                     {(hintSeparator || pagination) && <Separator />}
-                    <div className="flex flex-col-reverse items-start justify-between gap-1 pt-2 md:flex-row md:items-center md:gap-0 md:pt-0 ">
+                    <div className="flex flex-col-reverse items-start justify-between gap-1 pt-2 md:flex-row md:items-center md:gap-0 md:pt-0">
                         <Hint>{hint ?? ' '}</Hint>
                         <OptionalPagination pagination={pagination} />
                     </div>

apps/admin-x-settings/src/admin-x-ds/global/modal/Modal.tsx

@@ -21,6 +21,7 @@ export interface ModalProps {
     title?: string;
     okLabel?: string;
     okColor?: ButtonColor;
+    okLoading?: boolean;
     cancelLabel?: string;
     leftButtonProps?: ButtonProps;
     buttonsDisabled?: boolean;
@@ -48,6 +49,7 @@ const Modal: React.FC<ModalProps> = ({
     testId,
     title,
     okLabel = 'OK',
+    okLoading = false,
     cancelLabel = 'Cancel',
     footer,
     leftButtonProps,
@@ -137,7 +139,8 @@ const Modal: React.FC<ModalProps> = ({
                 color: okColor,
                 className: 'min-w-[80px]',
                 onClick: onOk,
-                disabled: buttonsDisabled
+                disabled: buttonsDisabled,
+                loading: okLoading
             });
         }
     }

apps/admin-x-settings/src/components/settings/site/recommendations/AddRecommendationModal.tsx

@@ -106,9 +106,10 @@ const AddRecommendationModal: React.FC<AddRecommendationModalProps> = ({recommen
     });
 
     let okLabel = 'Next';
+    let loadingState = false;
 
     if (saveState === 'saving') {
-        okLabel = 'Checking...';
+        loadingState = true;
     }
 
     return <Modal
@@ -120,6 +121,7 @@ const AddRecommendationModal: React.FC<AddRecommendationModalProps> = ({recommen
         backDropClick={false}
         okColor='black'
         okLabel={okLabel}
+        okLoading={loadingState}
         size='sm'
         testId='add-recommendation-modal'
         title='Add recommendation'

apps/admin-x-settings/src/components/settings/site/recommendations/AddRecommendationModalConfirm.tsx

@@ -41,9 +41,10 @@ const AddRecommendationModalConfirm: React.FC<AddRecommendationModalProps> = ({r
     });
 
     let okLabel = 'Add';
+    let loadingState = false;
 
     if (saveState === 'saving') {
-        okLabel = 'Adding...';
+        loadingState = true;
     } else if (saveState === 'saved') {
         okLabel = 'Added';
     }
@@ -81,6 +82,7 @@ const AddRecommendationModalConfirm: React.FC<AddRecommendationModalProps> = ({r
         leftButtonProps={leftButtonProps}
         okColor='black'
         okLabel={okLabel}
+        okLoading={loadingState}
         size='sm'
         testId='add-recommendation-modal'
         title={'Add recommendation'}