Support for theme customization using CSS variables

packages/tail-kit/src/components/button/button.test.tsx

@@ -105,7 +105,7 @@ test('render icon after label when iconPlacement is afterText', () => {
 test('render default disabled button correctly', () => {
   render(<Button disabled>Click Me</Button>)
   expect(screen.getByRole('button')).toHaveClass(
-    'border-gray-400 text-gray-400',
+    'border-disabled text-disabled',
   )
 })
 
@@ -115,7 +115,9 @@ test('render primary disabled button correctly', () => {
       Click Me
     </Button>,
   )
-  expect(screen.getByRole('button')).toHaveClass('bg-gray-400 text-white')
+  expect(screen.getByRole('button')).toHaveClass(
+    'bg-disabled text-text-inverse',
+  )
 })
 
 test('render danger disabled button correctly', () => {
@@ -125,7 +127,7 @@ test('render danger disabled button correctly', () => {
     </Button>,
   )
   expect(screen.getByRole('button')).toHaveClass(
-    'border-gray-400 text-gray-400',
+    'border-disabled text-disabled',
   )
 })
 
@@ -135,5 +137,5 @@ test('render link disabled button correctly', () => {
       Click Me
     </Button>,
   )
-  expect(screen.getByRole('button')).toHaveClass('text-gray-400')
+  expect(screen.getByRole('button')).toHaveClass('text-disabled')
 })

packages/tail-kit/src/components/button/button.tsx

@@ -65,32 +65,32 @@ export const Button = forwardRef(
     const buttonClassNames = useMemo(() => {
       if (buttonType === 'default') {
         if (disabled) {
-          return 'border-gray-400 text-gray-400 default'
+          return 'border-disabled text-disabled default'
         }
-        return 'border-blue-600 text-blue-600 hover:bg-blue-600 hover:text-white default'
+        return 'border-primary text-primary hover:bg-primary hover:text-text-inverse default'
       }
 
       if (buttonType === 'primary') {
         if (disabled) {
-          return 'bg-gray-400 text-white border-transparent primary'
+          return 'bg-disabled text-text-inverse border-transparent primary'
         }
 
-        return 'bg-blue-600 text-white border-transparent primary'
+        return 'bg-primary text-text-inverse border-transparent primary'
       }
 
       if (buttonType === 'danger') {
         if (disabled) {
-          return 'border-gray-400 text-gray-400 danger'
+          return 'border-disabled text-disabled danger'
         }
 
-        return 'border-red-500 text-red-500 hover:bg-red-500 hover:text-white danger'
+        return 'border-error text-error hover:bg-error hover:text-text-inverse danger'
       }
 
       // if none of the above branches are satisfied, then the button is of type link
       if (disabled) {
-        return 'border-transparent text-gray-400 link'
+        return 'border-transparent text-disabled link'
       }
-      return 'border-transparent text-blue-600 link'
+      return 'border-transparent text-primary link'
     }, [buttonType, disabled])
 
     const iconComponent = loading ? (
@@ -103,7 +103,7 @@ export const Button = forwardRef(
       <button
         aria-label={children || restProps['aria-label']}
         className={clsx(
-          'py-2 rounded-md focus:outline-none focus:ring-2 border text-sm font-medium flex items-center justify-center space-x-2 transition-colors duration-300',
+          'py-2 rounded-default focus:outline-none focus:ring-2 border text-sm font-medium flex items-center justify-center space-x-2 transition-colors duration-300',
           iconOnlyButton ? 'px-2' : 'px-3',
           buttonClassNames,
           disabled || loading ? 'cursor-not-allowed' : 'cursor-pointer',

packages/tail-kit/src/components/form/form.test.tsx

@@ -121,10 +121,10 @@ test('children as function works correctly with form', async () => {
       )}
     </Form>,
   )
-  expect(screen.getByText('Submit').parentElement).toHaveClass('bg-gray-400')
+  expect(screen.getByText('Submit').parentElement).toHaveClass('bg-disabled')
   userEvent.type(screen.getByRole('textbox'), 'test@example.com')
   await waitFor(() => {
-    expect(screen.getByText('Submit').parentElement).toHaveClass('bg-blue-600')
+    expect(screen.getByText('Submit').parentElement).toHaveClass('bg-primary')
   })
 })
 

packages/tail-kit/src/components/pagination/pagination.test.tsx

@@ -11,23 +11,23 @@ test('pagination component working correctly', () => {
 
 test('Next button of pagination component working correctly', () => {
   render(<Pagination total={50} />)
-  expect(screen.getByText('1').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('1').parentElement).toHaveClass('bg-primary')
   fireEvent.click(screen.getByText('Next'))
-  expect(screen.getByText('2').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('2').parentElement).toHaveClass('bg-primary')
 })
 
 test('Previous button of pagination component working correctly', () => {
   render(<Pagination total={50} defaultCurrent={3} />)
-  expect(screen.getByText('3').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('3').parentElement).toHaveClass('bg-primary')
   fireEvent.click(screen.getByText('Previous'))
-  expect(screen.getByText('2').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('2').parentElement).toHaveClass('bg-primary')
 })
 
 test('Page buttons of pagination component working correctly', () => {
   render(<Pagination total={50} />)
-  expect(screen.getByText('1').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('1').parentElement).toHaveClass('bg-primary')
   fireEvent.click(screen.getByText('3'))
-  expect(screen.getByText('3').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('3').parentElement).toHaveClass('bg-primary')
 })
 
 /** Tests for page size changer in pagination component */
@@ -43,42 +43,42 @@ test('Change selected page when value of total number of pages changes', () => {
   render(<Pagination total={100} showSizeChanger defaultCurrent={10} />)
   fireEvent.click(screen.getByText('10 / page'))
   fireEvent.click(screen.getByText('20 / page'))
-  expect(screen.getByText('5').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('5').parentElement).toHaveClass('bg-primary')
 })
 
 /** Tests for page jumper */
 test('Page jumper of pagination component working correctly', () => {
   render(<Pagination total={50} showQuickJumper />)
   userEvent.type(screen.getByRole('textbox'), '3')
   fireEvent.blur(screen.getByDisplayValue('3'))
-  expect(screen.getByText('3').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('3').parentElement).toHaveClass('bg-primary')
 })
 
 test('Out of range value in page jumper working correctly', () => {
   render(<Pagination total={50} defaultCurrent={3} showQuickJumper />)
   userEvent.type(screen.getByRole('textbox'), '-1')
   fireEvent.blur(screen.getByDisplayValue('-1'))
-  expect(screen.getByText('1').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('1').parentElement).toHaveClass('bg-primary')
 
   userEvent.type(screen.getByRole('textbox'), '10')
   fireEvent.blur(screen.getByDisplayValue('10'))
-  expect(screen.getByText('5').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('5').parentElement).toHaveClass('bg-primary')
 })
 
 test('Enter key shortcut for page jumper working correctly', () => {
   render(<Pagination total={100} showQuickJumper />)
   const input = screen.getByRole('textbox')
   userEvent.type(input, '5')
   fireEvent.keyDown(input, { key: 'Enter', code: 13 })
-  expect(screen.getByText('5').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('5').parentElement).toHaveClass('bg-primary')
 })
 
 test('invalid entries in page jumper working correctly', () => {
   render(<Pagination total={100} defaultCurrent={5} showQuickJumper />)
   const input = screen.getByRole('textbox')
   userEvent.type(input, 'abc')
   fireEvent.keyDown(input, { key: 'Enter', code: 13 })
-  expect(screen.getByText('5').parentElement).toHaveClass('bg-blue-600')
+  expect(screen.getByText('5').parentElement).toHaveClass('bg-primary')
 })
 
 /** Test cases for page wrap in pagination component */

packages/tail-kit/src/styles/index.css

@@ -4,8 +4,26 @@
 
 @tailwind components;
 
+@layer base {
+  :root {
+    --font-family: 'Inter var', ui-sans-serif, system-ui, -apple-system,
+      BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
+      'Noto Sans', sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
+      'Segoe UI Symbol', 'Noto Color Emoji';
+
+    /* Color Palette */
+    --primary-color: theme('colors.blue.600');
+    --error-color: theme('colors.red.500');
+    --disabled-color: theme('colors.gray.400');
+
+    --text-primary-color: theme('colors.gray.800');
+    --text-inverse-color: theme('colors.white');
+    --border-radius-default: theme('borderRadius.md');
+  }
+}
+
 body {
-  @apply font-sans antialiased;
+  @apply antialiased font-default;
 }
 
 .checkbox:focus-within > .checkbox-icon-container {

packages/tail-kit/tailwind.config.js

@@ -1,4 +1,27 @@
 module.exports = {
   presets: [require('../../tailwind.config')],
   purge: ['./src/**/*.tsx', './src/**/*.ts', './src/styles/safelist.txt'],
+  theme: {
+    extend: {
+      fontFamily: {
+        default: 'var(--font-family)',
+      },
+      colors: {
+        primary: 'var(--primary-color)',
+        error: 'var(--error-color)',
+        disabled: 'var(--disabled-color)',
+        text: {
+          primary: 'var(--text-primary-color)',
+          inverse: 'var(--text-inverse-color)',
+        },
+      },
+      borderRadius: {
+        default: 'var(--border-radius-default)',
+      },
+    },
+  },
+  variants: {
+    extend: {},
+  },
+  plugins: [],
 }