Added checkbox to Admin Design System

refs. https://github.com/TryGhost/Team/issues/3150

ghost/admin-x-settings/src/admin-x-ds/global/Checkbox.stories.tsx

@@ -0,0 +1,34 @@
+import type {Meta, StoryObj} from '@storybook/react';
+
+import Checkbox from './Checkbox';
+
+const meta = {
+    title: 'Global / Checkbox',
+    component: Checkbox,
+    tags: ['autodocs'],
+    decorators: [(_story: any) => (<div style={{maxWidth: '400px'}}>{_story()}</div>)],
+    argTypes: {
+        hint: {
+            control: 'text'
+        }
+    }
+} satisfies Meta<typeof Checkbox>;
+
+export default meta;
+type Story = StoryObj<typeof Checkbox>;
+
+export const Default: Story = {
+    args: {
+        label: 'Checkbox 1',
+        id: 'my-radio-button'
+    }
+};
+
+export const WithTitleAndHint: Story = {
+    args: {
+        title: 'Title',
+        label: 'Checkbox 1',
+        hint: 'Here\'s some hint',
+        checked: true
+    }
+};

ghost/admin-x-settings/src/admin-x-ds/global/Checkbox.tsx

@@ -0,0 +1,50 @@
+import Heading from './Heading';
+import Hint from './Hint';
+import React, {useEffect, useState} from 'react';
+
+interface CheckboxProps {
+    id: string;
+    title?: string;
+    label: string;
+    value: string;
+    onChange: (checked: boolean) => void;
+    error?:boolean;
+    hint?: React.ReactNode;
+    checked?: boolean;
+}
+
+const Checkbox: React.FC<CheckboxProps> = ({id, title, label, value, onChange, error, hint, checked}) => {
+    const [isChecked, setIsChecked] = useState(checked);
+
+    useEffect(() => {
+        setIsChecked(checked);
+    }, [checked]);
+
+    const handleOnChange = (event: React.ChangeEvent<HTMLInputElement>) => {
+        const checkedValue = event.target.checked;
+        setIsChecked(checkedValue);
+        onChange(checkedValue);
+    };
+
+    return (
+        <div className='flex flex-col gap-1'>
+            {title && <Heading grey={true} level={6}>{title}</Heading>}
+            <label className={`flex cursor-pointer items-start ${title && '-mb-1 mt-1'}`} htmlFor={id}>
+                <input 
+                    checked={isChecked}
+                    className="relative float-left mt-[3px] h-4 w-4 appearance-none border-2 border-solid border-grey-300 after:absolute after:z-[1] after:block after:h-3 after:w-3 after:content-[''] checked:border-green checked:after:absolute checked:after:left-1/2 checked:after:top-1/2 checked:after:h-[0.625rem] checked:after:w-[0.625rem] checked:after:border-green checked:after:bg-green checked:after:content-[''] checked:after:[transform:translate(-50%,-50%)] hover:cursor-pointer focus:shadow-none focus:outline-none focus:ring-0 checked:focus:border-green dark:border-grey-600 dark:checked:border-green dark:checked:after:border-green dark:checked:after:bg-green dark:checked:focus:border-green"
+                    id={id}
+                    type='checkbox'
+                    value={value}
+                    onChange={handleOnChange}
+                />
+                <div className={`ml-2 flex flex-col ${hint && 'mb-2'}`}>
+                    <span className={`inline-block text-md ${hint && '-mb-1'}`}>{label}</span>
+                    {hint && <Hint>{hint}</Hint>}
+                </div>
+            </label>
+        </div>
+    );
+};
+
+export default Checkbox;

ghost/admin-x-settings/src/admin-x-ds/global/Radio.tsx

@@ -47,9 +47,9 @@ const Radio: React.FC<RadioProps> = ({id, title, options, onSelect, error, hint,
                         value={option.value}
                         onChange={handleOptionChange}
                     />
-                    <div className='ml-2 flex flex-col'>
+                    <div className={`ml-2 flex flex-col ${option.hint && 'mb-2'}`}>
-                        <span className='inline-block text-md'>{option.label}</span>
+                        <span className={`inline-block text-md ${option.hint && '-mb-1'}`}>{option.label}</span>
-                        {option.hint && <span className='mb-2 inline-block text-xs text-grey-700'>{option.hint}</span>}
+                        {option.hint && <Hint>{option.hint}</Hint>}
                     </div>
                 </label>
             ))}