Implement Breadcrumb Bar

[bdlukaa]

A BreadcrumbBar provides the direct path of pages or folders to the current location. It is often used for situations where the user's navigation trail (in a file system or menu system) needs to be persistently visible and the user may need to go back to a previous location.

Here's an example of a default breadcrumb bar:

Here's an example of a breadcrumb bar that overflows the available space:

Implementation model

BreadcrumbBar(
  crumbs: [
    Crumb(label: const Text('Item'), value: 1),
  ],
  onCrumbSelected: (crumb) {
    ...
  },
),

Additional context

• https://learn.microsoft.com/en-us/windows/apps/design/controls/breadcrumbbar