# Use `Ctrl-A` as the tmux command prefix instead of `Ctrl-B`.
unbind C-b
set-option -g prefix C-a

# Report the same $TERM value as we use for our terminal emulator (yes, go and
# set this) This influences, among other things, certain vim settings related to
# colours, rendering speed and mouse support.
set -g default-terminal "xterm-256color"

# Start windows and panes from `1`, not `0`.
set-option -g base-index 1
set-option -g pane-base-index 1

# History scrollback.
set-option -g history-limit 9999999

# Display a status line message when activity occurs in a window for which the
# monitor-activity window option is enabled.
set-option -g visual-activity on

# Resize the window to the size of the smallest session for which it is the
# current window, rather than the smallest session to which it is attached.
set-window-option -g aggressive-resize on

# Mouse Support! (for scrollback, and lazy manipulation of windows/panes)
# At least with iTerm2, this plays very well with vim mouse support :D Yay!
# Note: text-selection by default does a tmux copy (paste with prefix+]).
# Hold alt/meta/option for system selection/copy.
set-option -g mode-mouse on
set-option -g mouse-select-pane
set-option -g mouse-resize-pane on
set-option -g mouse-select-window on

# Act like vim.
set-option -g status-keys vi
set-window-option -g mode-keys vi # vi keys in copy mode (prefix+[)


#######################
# General Key Bindings
#######################

# Act like vim. Enhance copy mode to use more vim like keys for copying.
bind-key -t vi-copy 'v' begin-selection
bind-key -t vi-copy 'y' copy-selection

# Use prefix+r to reload the config file.
bind-key C-r source-file ~/.tmux.conf \; display-message "tmux.conf reloaded"

# Detach client like screen, <C-a> <C-d>.
bind-key C-d detach-client


###################################
# Window/Pane/Session Manipulation
###################################

# Window Movement.
bind-key -r C-h previous-window
bind-key -r C-l next-window
bind-key C-a last-window
bind-key -n M-1 select-window -t 1
bind-key -n M-2 select-window -t 2
bind-key -n M-3 select-window -t 3
bind-key -n M-4 select-window -t 4
bind-key -n M-5 select-window -t 5
bind-key -n M-6 select-window -t 6
bind-key -n M-7 select-window -t 7
bind-key -n M-8 select-window -t 8
bind-key -n M-9 select-window -t 9
bind-key -n M-0 select-window -t 10

# Window Creation/Destruction.
bind-key C-c new-window
# Remember prefix+, for renaming windows.

# Pane Movement.
bind-key h select-pane -L
bind-key j select-pane -D
bind-key k select-pane -U
bind-key l select-pane -R

# Pane Creation/Destruction.
unbind % # Remove default binding for horizontal split since we’re replacing it.
bind-key -n C-\ split-window -h
bind-key -n C-_ split-window -v
bind-key C-x kill-pane

# Pane Sychronisation.
bind-key s set -w synchronize-panes

# Session Switching/Destruction.
bind-key C-s choose-session
bind-key X kill-session
# Remember prefix+$ for renaming sessions.


########################
# Visual
########################

# Use solarized colour palette.
source ~/dotfiles/tmux/tmux-colors-solarized/tmuxcolors-256.conf

########################
# Powerline
########################

# While the default way of using powerline is something like:
#
#     source ~/dotfiles/powerline/powerline/powerline/bindings/tmux/powerline.conf
#
# we would rather roll our own not-so-blue-and-annoying color scheme, so we have
# to replicate the contents of that file, with adjustments.
#
# TODO is it possible to rework this into a powerline config in `~/.config/powerline`?

if-shell 'test -z "$POWERLINE_COMMAND"' 'set-environment -g POWERLINE_COMMAND powerline-render'

set -g status on
set -g status-utf8 on
set -g status-interval 2

# Central window list.
set -g status-justify "centre"
set -g status-fg colour231
set -g status-bg colour234
# `#I` = index, `#F` = last window indicator, `#W` = window name
set -g window-status-format " #[fg=colour244]#I#[fg=red]#F#[fg=colour249]#W "
set -g window-status-current-format "#[fg=red,bg=red] #[fg=colour231]#I #[bold]#W#[fg=red,nobold] "

# Left status.
set -g status-left-length 90
set -g status-left '#[fg=colour189,bg=colour55] #S #[fg=colour55,bg=colour233]#(eval $POWERLINE_COMMAND tmux left)'

# Right status.
set -g status-right-length 90
set -g status-right '#(eval $POWERLINE_COMMAND tmux right) #(~/dotfiles/tmux/rainbarf/rainbarf --remaining --rgb --width 10)'

# Some instructions above are deprecated in 1.9+ so rewrite them where necessary.
if-shell '[[ `tmux -V` == *1.9* ]]' 'source ~/dotfiles/tmux/tmux19.conf'

# vim: ft=tmux