Track Active Tab in PrimeFaces TabView

PrimeFaces' TabView provides a way to create a button strip at the bottom of the screen, allowing users to switch between different views by tapping each button. This feature was introduced in PrimeFaces 3.2 and is supported through SwiftUI's TabView. Navigation stacks are ideal for creating hierarchical stacks of views that allow users to drill down into data, but they don't work well for showing unrelated data.

When working with PrimeFaces TabView, it's essential to understand the three client-side callbacks: `onTabChange`, `onTabShow`, and `onTabHide`. The `onTabChange` callback is executed when an inactive tab is clicked, while `onTabShow` is executed when an inactive tab becomes active. However, you can also manually assign a selected tab using ``.

track active tab primefaces tabview

One common issue with PrimeFaces TabView is that it can update tables even when the corresponding tab is not selected. To overcome this challenge, you need to ensure that areas always in view are updated and that tables within selected tabs are only updated if they are within the currently active tab. Unfortunately, individual tabs do not have renderers in PrimeFaces, making it difficult to update them dynamically.

Another problem encountered when using PrimeFaces TabView is updating titles dynamically after a node in the tree is selected. This can be achieved by using HTML5's `localStorage` object or jQuery UI Tabs.

For instance, if you want to underline specific tabs based on content displayed within those tabs, you can use Ajax update and specify the title of the tab as an `f:facet` with the name 'title'. You can also use JavaScript to achieve this by getting the element by its href using jQuery.

In conclusion, PrimeFaces TabView provides a powerful way to create button strips for switching between different views. However, it's essential to understand its client-side callbacks and limitations to ensure smooth operation and dynamic updates.

Track active tab primefaces tabview