DataTable: Cell navigation like Excel Spreadsheet

[1Map]

In the DataTable, how can I navigate through cells using keyboard (arrow keys), like in, for example: MS Excel

I want to highlight the focused row (color1) as well as the focused cell (color2). And then, when I use my keyboard arrow keys, navigate from one cell to the next.

left / right = stay on focused row and move between columns
up /down = move focus between rows, but stay on focused column
home, end, page up, page down should also behave like Excel

Like in example: https://www.primefaces.org/showcase-ext/sections/sheet/basicUsage.jsf

[1Map]

Any feedback on this?

[msladek]

This PR primefaces/primevue#6349 was just rejected

[mergehez]

Since my previous PR was rejected, I’d like to suggest a different approach: adding keyboard-navigation option. If set to true, it would enable the same behavior I had proposed in my PR.

However, one issue with this is that keyboard-navigation would always be available, even if edit-mode isn’t set to "cell." That could lead to some confusion.

Another possible solution: adding a new edit mode like "navigated-cell" (or something similar). This way, the keyboard navigation would only kick in when this specific mode is enabled, keeping it separate from the existing modes.

I really want this to be implemented, so please let me know what you think or if there's a better way to handle this.