feat(Forms): add toolbarVariant="minimumOneItem" to Iterate.Toolbar for hiding buttons when there is only one item in the array

packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/Iterate/Array/Examples.tsx

@@ -378,41 +378,19 @@ export const InitialOpen = () => {
 
           <Card align="stretch">
             <Iterate.Array path="/countries" defaultValue={[null]}>
-              <Iterate.ViewContainer>
+              <Iterate.ViewContainer toolbarVariant="minimumOneItem">
                 <Value.SelectCountry
                   label="Land du er statsborger i"
                   itemPath="/"
                 />
-                <Iterate.Toolbar>
-                  {({ items }) =>
-                    items.length === 1 ? (
-                      <Iterate.ViewContainer.EditButton />
-                    ) : (
-                      <>
-                        <Iterate.ViewContainer.EditButton />
-                        <Iterate.ViewContainer.RemoveButton />
-                      </>
-                    )
-                  }
-                </Iterate.Toolbar>
               </Iterate.ViewContainer>
 
-              <Iterate.EditContainer>
+              <Iterate.EditContainer toolbarVariant="minimumOneItem">
                 <Field.SelectCountry
                   label="Land du er statsborger i"
                   itemPath="/"
                   required
                 />
-                <Iterate.Toolbar>
-                  {({ items }) =>
-                    items.length === 1 ? null : (
-                      <>
-                        <Iterate.EditContainer.DoneButton />
-                        <Iterate.EditContainer.CancelButton />
-                      </>
-                    )
-                  }
-                </Iterate.Toolbar>
               </Iterate.EditContainer>
             </Iterate.Array>
 

packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/Iterate/Array/demos.mdx

@@ -51,7 +51,7 @@ With an optional `title` and [Iterate.Toolbar](/uilib/extensions/forms/Iterate/T
 
 ### Initially open
 
-This example uses a customized [Iterate.Toolbar](/uilib/extensions/forms/Iterate/Toolbar/).
+This example uses the container's `toolbarVariant` prop with `minimumOneItem`.
 
 It hides the toolbar in the `EditContainer` when there is only one item in the array. And it hides the remove button in the `ViewContainer` when there is only one item in the array.
 

packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/Iterate/EditContainer/info.mdx

@@ -47,6 +47,27 @@ render(
 )
 ```
 
+## Get the internal item object
+
+You can get the internal item object by using the `Iterate.useItem` hook.
+
+```tsx
+import { Iterate, Field, Value } from '@dnb/eufemia/extensions/forms'
+
+const MyItemForm = () => {
+  const item = Iterate.useItem()
+  console.log('index:', item.index)
+
+  return <Field.String itemPath="/" />
+}
+
+render(
+  <Iterate.Array value={['foo', 'bar']}>
+    <MyItemForm />
+  </Iterate.Array>,
+)
+```
+
 ## Customize the Toolbar
 
 ```tsx
@@ -65,23 +86,22 @@ render(
 )
 ```
 
-## Get the internal item object
+### Variants
 
-You can get the internal item object by using the `Iterate.useItem` hook.
+#### `minimumOneItem`
 
-```tsx
-import { Iterate, Field, Value } from '@dnb/eufemia/extensions/forms'
+This variant has the following behavior:
 
-const MyItemForm = () => {
-  const item = Iterate.useItem()
-  console.log('index:', item.index)
+- When `EditContainer` is visible, and the number of items in the array is one, the entire toolbar will be hidden.
 
-  return <Field.String itemPath="/" />
-}
+```tsx
+import { Iterate } from '@dnb/eufemia/extensions/forms'
 
 render(
-  <Iterate.Array value={['foo', 'bar']}>
-    <MyItemForm />
+  <Iterate.Array>
+    <Iterate.EditContainer toolbarVariant="minimumOneItem">
+      Item Content
+    </Iterate.EditContainer>
   </Iterate.Array>,
 )
 ```

packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/Iterate/Toolbar/info.mdx

@@ -7,7 +7,7 @@ hideInMenu: true
 
 Use `Iterate.Toolbar` to enhance each item in the array with additional functionality. It's particularly useful within components like [Iterate.AnimatedContainer](/uilib/extensions/forms/Iterate/AnimatedContainer) to incorporate a toolbar with extra tools.
 
-The Toolbar is integrated into the containers [Iterate.ViewContainer](/uilib/extensions/forms/Iterate/ViewContainer/) and [Iterate.EditContainer](/uilib/extensions/forms/Iterate/EditContainer/).
+The Toolbar is integrated into the [Iterate.ViewContainer](/uilib/extensions/forms/Iterate/ViewContainer/) and the [Iterate.EditContainer](/uilib/extensions/forms/Iterate/EditContainer/).
 
 ```tsx
 import { Iterate } from '@dnb/eufemia/extensions/forms'

packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/Iterate/ViewContainer/info.mdx

@@ -63,6 +63,26 @@ render(
 )
 ```
 
+### Variants
+
+#### `minimumOneItem`
+
+This variant has the following behavior:
+
+- When `ViewContainer` is visible, and the number of items in the array is one, the remove button will be hidden.
+
+```tsx
+import { Iterate } from '@dnb/eufemia/extensions/forms'
+
+render(
+  <Iterate.Array>
+    <Iterate.ViewContainer toolbarVariant="minimumOneItem">
+      Item Content
+    </Iterate.ViewContainer>
+  </Iterate.Array>,
+)
+```
+
 ## Accessibility
 
 The `Iterate.ViewContainer` component has an `aria-label` attribute, which is set to the `title` prop value. It uses a section element to wrap the content, which helps users with screen readers to get the needed announcement.

packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/changelog.mdx

@@ -16,6 +16,7 @@ Change log for the Eufemia Forms extension.
 ## v10.48
 
 - Make [Iterate.Toolbar](/uilib/extensions/forms/Iterate/Toolbar/) customizable.
+- Add new property `toolbarVariant` to [Iterate.ViewContainer](/uilib/extensions/forms/Iterate/ViewContainer/) and [Iterate.EditContainer](/uilib/extensions/forms/Iterate/EditContainer/) for hiding toolbar buttons when there is only one item in the array.
 
 ## v10.46
 

packages/dnb-eufemia/src/extensions/forms/Iterate/EditContainer/EditContainer.tsx

@@ -30,15 +30,25 @@ export type Props = {
    * An alternative toolbar to be shown in the EditContainer.
    */
   toolbar?: React.ReactNode
+  /**
+   * The variant of the toolbar.
+   */
+  toolbarVariant?: 'minimumOneItem'
 }
 
 export type AllProps = Props & FlexContainerProps & ArrayItemAreaProps
 
 export default function EditContainer(props: AllProps) {
-  const { toolbar, children, ...rest } = props
+  const { toolbar, toolbarVariant, children, ...rest } = props
+  const { arrayValue } = useContext(IterateItemContext)
+
+  let toolbarElement = toolbar
+  if (toolbarVariant === 'minimumOneItem' && arrayValue.length <= 1) {
+    toolbarElement = <></>
+  }
 
   const hasToolbar =
-    !toolbar &&
+    !toolbarElement &&
     React.Children.toArray(children).some((child) => {
       return child?.['type'] === Toolbar
     })
@@ -48,7 +58,7 @@ export default function EditContainer(props: AllProps) {
       toolbar={
         hasToolbar
           ? null
-          : toolbar ?? (
+          : toolbarElement ?? (
               <Toolbar>
                 <DoneButton />
                 <CancelButton />

packages/dnb-eufemia/src/extensions/forms/Iterate/EditContainer/EditContainerDocs.ts

@@ -21,6 +21,11 @@ export const EditContainerProperties: PropertiesTableProps = {
     type: 'React.Node',
     status: 'optional',
   },
+  toolbarVariant: {
+    doc: 'Use variants to render the toolbar differently. Currently there is only the `minimumOneItem` variant. See the info section for more info.',
+    type: 'string',
+    status: 'optional',
+  },
   open: {
     doc: 'If the container should be open or not. This is taken care of internally by default.',
     type: 'boolean',

packages/dnb-eufemia/src/extensions/forms/Iterate/EditContainer/__tests__/EditAndViewContainer.test.tsx

@@ -589,11 +589,13 @@ describe('EditContainer and ViewContainer', () => {
 
     const { rerender } = render(
       <Iterate.Array value={['foo']}>
-        <Iterate.ViewContainer toolbar={viewToolbar}>
+        <Iterate.ViewContainer>
           View Content
+          {viewToolbar}
         </Iterate.ViewContainer>
-        <Iterate.EditContainer toolbar={editToolbar}>
+        <Iterate.EditContainer>
           Edit Content
+          {editToolbar}
         </Iterate.EditContainer>
       </Iterate.Array>
     )
@@ -617,10 +619,67 @@ describe('EditContainer and ViewContainer', () => {
 
     rerender(
       <Iterate.Array value={['foo', 'bar']}>
-        <Iterate.ViewContainer toolbar={viewToolbar}>
+        <Iterate.ViewContainer>
           View Content
+          {viewToolbar}
         </Iterate.ViewContainer>
-        <Iterate.EditContainer toolbar={editToolbar}>
+        <Iterate.EditContainer>
+          Edit Content
+          {editToolbar}
+        </Iterate.EditContainer>
+      </Iterate.Array>
+    )
+
+    {
+      const elements = document.querySelectorAll(
+        '.dnb-forms-iterate__element'
+      )
+      expect(elements).toHaveLength(2)
+
+      const [firstElement] = Array.from(elements)
+      const [viewBlock, editBlock] = Array.from(
+        firstElement.querySelectorAll('.dnb-forms-section-block')
+      )
+      expect(editBlock.querySelectorAll('button')).toHaveLength(2)
+      expect(viewBlock.querySelectorAll('button')).toHaveLength(2)
+    }
+  })
+
+  it('should render toolbarVariant="minimumOneItem" with correct buttons', () => {
+    const { rerender } = render(
+      <Iterate.Array value={['foo']}>
+        <Iterate.ViewContainer toolbarVariant="minimumOneItem">
+          View Content
+        </Iterate.ViewContainer>
+        <Iterate.EditContainer toolbarVariant="minimumOneItem">
+          Edit Content
+        </Iterate.EditContainer>
+      </Iterate.Array>
+    )
+
+    {
+      const elements = document.querySelectorAll(
+        '.dnb-forms-iterate__element'
+      )
+      expect(elements).toHaveLength(1)
+
+      const [firstElement] = Array.from(elements)
+      const [viewBlock, editBlock] = Array.from(
+        firstElement.querySelectorAll('.dnb-forms-section-block')
+      )
+      expect(editBlock.querySelectorAll('button')).toHaveLength(0)
+      expect(viewBlock.querySelectorAll('button')).toHaveLength(1)
+      expect(viewBlock.querySelectorAll('button')[0]).toHaveTextContent(
+        tr.viewContainer.editButton
+      )
+    }
+
+    rerender(
+      <Iterate.Array value={['foo', 'bar']}>
+        <Iterate.ViewContainer toolbarVariant="minimumOneItem">
+          View Content
+        </Iterate.ViewContainer>
+        <Iterate.EditContainer toolbarVariant="minimumOneItem">
           Edit Content
         </Iterate.EditContainer>
       </Iterate.Array>

packages/dnb-eufemia/src/extensions/forms/Iterate/ViewContainer/ViewContainer.tsx

@@ -19,22 +19,42 @@ export type Props = {
    * An alternative toolbar to be shown in the ViewContainer.
    */
   toolbar?: React.ReactNode
+  /**
+   * The variant of the toolbar.
+   */
+  toolbarVariant?: 'minimumOneItem'
 }
 
 export type AllProps = Props & FlexContainerProps & ArrayItemAreaProps
 
 function ViewContainer(props: AllProps) {
-  const { children, className, title, toolbar, ...restProps } = props || {}
-  const { index } = useContext(IterateItemContext)
+  const {
+    children,
+    className,
+    title,
+    toolbar,
+    toolbarVariant,
+    ...restProps
+  } = props || {}
+  const { index, arrayValue } = useContext(IterateItemContext)
 
   let itemTitle = title
   let ariaLabel = useMemo(() => convertJsxToString(itemTitle), [itemTitle])
   if (ariaLabel.includes('{itemNr}')) {
     itemTitle = ariaLabel = ariaLabel.replace('{itemNr}', index + 1)
   }
 
+  let toolbarElement = toolbar
+  if (toolbarVariant === 'minimumOneItem' && arrayValue.length <= 1) {
+    toolbarElement = (
+      <Toolbar>
+        <EditButton />
+      </Toolbar>
+    )
+  }
+
   const hasToolbar =
-    !toolbar &&
+    !toolbarElement &&
     React.Children.toArray(children).some((child) => {
       return child?.['type'] === Toolbar
     })
@@ -51,7 +71,7 @@ function ViewContainer(props: AllProps) {
         {children}
         {hasToolbar
           ? null
-          : toolbar ?? (
+          : toolbarElement ?? (
               <Toolbar>
                 <EditButton />
                 <RemoveButton />

packages/dnb-eufemia/src/extensions/forms/Iterate/ViewContainer/ViewContainerDocs.ts

@@ -16,6 +16,11 @@ export const ViewContainerProperties: PropertiesTableProps = {
     type: 'React.Node',
     status: 'optional',
   },
+  toolbarVariant: {
+    doc: 'Use variants to render the toolbar differently. Currently there is only the `minimumOneItem` variant. See the info section for more info.',
+    type: 'string',
+    status: 'optional',
+  },
   '[FlexVertical](/uilib/layout/flex/container/)': {
     doc: 'All Flex.Vertical properties.',
     type: 'Various',