#+TITLE: Tabs layer

#+TAGS: emacs|layer|spacemacs

* Table of Contents                     :TOC_5_gh:noexport:
- [[#description][Description]]
  - [[#features][Features:]]
- [[#install][Install]]
- [[#configuration][Configuration]]
  - [[#selected-tab-bar][Selected tab bar]]
  - [[#hide-tabs-after-a-delay][Hide tabs after a delay]]
- [[#key-bindings][Key bindings]]

* Description
This layer adds support for tabs. Implementation is done using [[https://github.com/ema2159/centaur-tabs][Centaur Tabs]].

** Features:
- Sets up tabs using Centaur tabs as backend
- Optionally auto hide tabs after delay

* Install
To use this configuration layer, add it to your =~/.spacemacs=. You will need to
add =tabs= to the existing =dotspacemacs-configuration-layers= list in this
file.

* Configuration
** Selected tab bar
To display a bar in the given direction to the selected tab, set =tabs-highlight-current-tab= to
one of =left= (default), =under=, =over=.

For example,

#+BEGIN_SRC emacs-lisp
  (setq-default dotspacemacs-configuration-layers
                '(tabs :variables tabs-highlight-current-tab 'left))
#+END_SRC

Note that this has no effect when Emacs is running in daemon mode.

** Hide tabs after a delay
You can set hooks for buffers in which it isn't desired to have tabs by
customizing =centaur-tabs-hide-tabs-hooks=.

Alternatively you can set =tabs-auto-hide= to =t= to auto hide tabs after some
delay =tabs-auto-hide-delay= via the :variables keyword in your =.spacemacs=:

#+BEGIN_SRC emacs-lisp
  (setq-default dotspacemacs-configuration-layers
                '(tabs :variables
                       tabs-auto-hide t
                       tabs-auto-hide-delay 3))
#+END_SRC

* Key bindings

| Key binding | Description                                           |
|-------------+-------------------------------------------------------|
| ~g t~       | Select the next available tab                         |
| ~g T~       | Select the previous available tab                     |
| ~g C-t~     | Move current tabe to right                            |
| ~g C-T~     | Move current tabe to left                             |
| ~C-c t s~   | Display a list of current buffer groups using Counsel |
| ~C-c t p~   | Group buffer tabs by projectile                       |
| ~C-c t g~   | Group buffer tabs by groups                           |