Navigation improvement

[pomozoff]

Is your feature request related to a problem? Please describe.
I'm always frustrated when trying to navigate through a plenty of remote branches by up and down arrows.

Describe the solution you'd like

1. Add PgUp and PgDown shortcuts.
2. Add a filter text field. I believe it would be useful not only in the "branch" window.

Describe alternatives you've considered
Nothing more.

Additional context
Nothing to add.

[extrawurst]

1. totally agreed.
2. is a dup of Search branch #1350

lets make this issue about adding pageup/down support in the branch list view

[ObiWanRohan]

Looks like 1 is already present. The PgUp and PgDn keys are working in the branch list view.

[pomozoff]

Good news!
How do they work on a MacBook?

[ObiWanRohan]

I am on Linux with a full keyboard so I directly have the keys.
Can you try with fn + Up Arrow and fn + Down Arrow?

Here's where the scroll is implemented.
https://github.com/extrawurst/gitui/blob/b59526c86c3faaac29716fe472f322c134a52305/src/components/branchlist.rs#L231-L246

[pomozoff]

Yes, that works.

[extrawurst]

so this can be closed then?

[pomozoff]

I think so