feat(ui-tabs): extends the customization of Tab component

Closes: CLX-276

Adds the possibility to disable built-in styling of a `Tab` to replace with a custom component
through `renderTitle`
- adds `customTab` flag to `Panel` to remove the default styling from the
`Tab`
- adds `alignTab` prop to `Panel` to allow to customzie the `Tabs`'s relative alignment in the
container flexbox

packages/ui-tabs/src/Tabs/Panel/index.tsx

@@ -56,7 +56,8 @@ class Panel extends Component<TabsPanelProps> {
     isSelected: false,
     padding: 'small',
     active: false,
-    unmountOnExit: true
+    unmountOnExit: true,
+    customTab: false
   }
 
   componentDidMount() {

packages/ui-tabs/src/Tabs/Panel/props.ts

@@ -35,6 +35,7 @@ import type {
 import type {
   OtherHTMLAttributes,
   PropValidators,
+  Renderable,
   TabsPanelTheme
 } from '@instructure/shared-types'
 
@@ -43,7 +44,7 @@ type TabsPanelOwnProps = {
    * The content that will be rendered in the corresponding <Tab /> and will label
    * this `<Tabs.Panel />` for screen readers
    */
-  renderTitle: React.ReactNode | (() => React.ReactNode)
+  renderTitle: Renderable
   children?: React.ReactNode
   variant?: 'default' | 'secondary'
   isSelected?: boolean
@@ -67,6 +68,16 @@ type TabsPanelOwnProps = {
    * When set to false, the tabPanel only will be hidden, but not dismounted when not active
    */
   unmountOnExit?: boolean
+
+  /**
+   * When set to true, the tab will be rendered with minimal styling to enable a custom design
+   */
+  customTab?: boolean
+
+  /**
+   * Aligning the tab in the flex container
+   */
+  alignTab?: string
 }
 
 type PropKeys = keyof TabsPanelOwnProps
@@ -93,7 +104,9 @@ const propTypes: PropValidators<PropKeys> = {
   textAlign: PropTypes.oneOf(['start', 'center', 'end']),
   elementRef: PropTypes.func,
   active: PropTypes.bool,
-  unmountOnExit: PropTypes.bool
+  unmountOnExit: PropTypes.bool,
+  customTab: PropTypes.bool,
+  alignTab: PropTypes.string
 }
 
 const allowedProps: AllowedPropKeys = [
@@ -110,7 +123,9 @@ const allowedProps: AllowedPropKeys = [
   'textAlign',
   'elementRef',
   'active',
-  'unmountOnExit'
+  'unmountOnExit',
+  'customTab',
+  'alignTab'
 ]
 
 export type { TabsPanelProps, TabsPanelStyle }

packages/ui-tabs/src/Tabs/Tab/index.tsx

@@ -96,6 +96,8 @@ class Tab extends Component<TabsTabProps> {
       controls,
       children,
       styles,
+      customTab,
+      align,
       ...props
     } = this.props
 

packages/ui-tabs/src/Tabs/Tab/props.ts

@@ -50,6 +50,8 @@ type TabsTabOwnProps = {
     tabData: { index: number; id: string }
   ) => void
   children?: Renderable
+  customTab?: boolean
+  align?: string
 }
 
 type PropKeys = keyof TabsTabOwnProps
@@ -71,7 +73,9 @@ const propTypes: PropValidators<PropKeys> = {
   isSelected: PropTypes.bool,
   onClick: PropTypes.func,
   onKeyDown: PropTypes.func,
-  children: PropTypes.oneOfType([PropTypes.node, PropTypes.func])
+  children: PropTypes.oneOfType([PropTypes.node, PropTypes.func]),
+  customTab: PropTypes.bool,
+  align: PropTypes.string
 }
 
 const allowedProps: AllowedPropKeys = [
@@ -83,7 +87,9 @@ const allowedProps: AllowedPropKeys = [
   'isSelected',
   'onClick',
   'onKeyDown',
-  'children'
+  'children',
+  'customTab',
+  'align'
 ]
 
 export type { TabsTabProps, TabsTabStyle }

packages/ui-tabs/src/Tabs/Tab/styles.ts

@@ -49,7 +49,7 @@ const generateStyle = (
   componentTheme: TabsTabTheme,
   props: TabsTabProps
 ): TabsTabStyle => {
-  const { variant, isSelected, isDisabled } = props
+  const { variant, isSelected, isDisabled, customTab, align } = props
 
   const variants = {
     default: {
@@ -132,20 +132,23 @@ const generateStyle = (
   return {
     tab: {
       label: 'tab',
-      fontFamily: componentTheme.fontFamily,
-      fontWeight: componentTheme.fontWeight,
-      lineHeight: componentTheme.lineHeight,
-      fontSize: componentTheme.fontSize,
-      cursor: 'pointer',
-      userSelect: 'none',
-      whiteSpace: 'nowrap',
+      ...(!customTab && {
+        fontFamily: componentTheme.fontFamily,
+        fontWeight: componentTheme.fontWeight,
+        lineHeight: componentTheme.lineHeight,
+        fontSize: componentTheme.fontSize,
+        cursor: 'pointer',
+        userSelect: 'none',
+        whiteSpace: 'nowrap',
 
-      ...((isSelected || isDisabled) && { cursor: 'default' }),
-      ...(isDisabled && { opacity: 0.5 }),
+        ...((isSelected || isDisabled) && { cursor: 'default' }),
+        ...(isDisabled && { opacity: 0.5 }),
 
-      ...focusRingStyles,
+        ...focusRingStyles,
 
-      ...variants[variant!]
+        ...variants[variant!]
+      }),
+      ...(align && { alignSelf: align })
     }
   }
 }

packages/ui-tabs/src/Tabs/index.tsx

@@ -352,6 +352,8 @@ class Tabs extends Component<TabsProps, TabsState> {
         isDisabled={panel.props.isDisabled}
         onClick={this.handleTabClick}
         onKeyDown={this.handleTabKeyDown}
+        customTab={panel.props.customTab}
+        align={panel.props.alignTab}
       >
         {panel.props.renderTitle}
       </Tab>