From 4ff5de6273118877c0120f0ee115c1bbbb42532f Mon Sep 17 00:00:00 2001
From: Bob <QiBaobin@users.noreply.github.com>
Date: Fri, 17 Feb 2023 12:08:38 +0800
Subject: [PATCH] Create zellij.kak

---
 rc/windowing/detection.kak |  2 +-
 rc/windowing/zellij.kak    | 74 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+), 1 deletion(-)
 create mode 100644 rc/windowing/zellij.kak

diff --git a/rc/windowing/detection.kak b/rc/windowing/detection.kak
index c47ca0a3..6e4b71e0 100644
--- a/rc/windowing/detection.kak
+++ b/rc/windowing/detection.kak
@@ -23,7 +23,7 @@ declare-option -docstring \
 "Ordered list of windowing modules to try and load. An empty list disables
 both automatic module loading and environment detection, enabling complete
 manual control of the module loading." \
-str-list windowing_modules 'tmux' 'screen' 'kitty' 'iterm' 'sway' 'wayland' 'x11'
+str-list windowing_modules 'tmux' 'screen' 'zellij' 'kitty' 'iterm' 'sway' 'wayland' 'x11'
 
 hook -group windowing global KakBegin .* %{
 
diff --git a/rc/windowing/zellij.kak b/rc/windowing/zellij.kak
new file mode 100644
index 00000000..f4ef85d0
--- /dev/null
+++ b/rc/windowing/zellij.kak
@@ -0,0 +1,74 @@
+# https://zellij.dev/
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+provide-module zellij %{
+
+# ensure we're running under zellij
+evaluate-commands %sh{
+    [ -z "${kak_opt_windowing_modules}" ] || [ -n "$ZELLIJ" ] || echo 'fail zellij not detected'
+}
+
+declare-option -hidden -docstring %{zellij run options (please check out "zellij run --help" for detail)}\
+    str zellij_run_options ""
+
+define-command -hidden -params .. zellij-run %{
+    nop %sh{
+        zellij run ${kak_opt_zellij_run_options} -- $SHELL -i -c "$*" < /dev/null > /dev/null 2>&1 &
+    }
+    set global zellij_run_options ""
+    unset buffer zellij_run_options
+    unset window zellij_run_options
+}
+
+define-command -hidden -params 1.. zellij-terminal-impl %{
+    set global zellij_run_options "--close-on-exit"
+    zellij-run %arg{@}
+}
+complete-command zellij-terminal-impl shell
+
+define-command zellij-terminal-vertical -params 1.. -docstring '
+zellij-terminal-vertical <program> [<arguments>]: create a new terminal as a zellij pane
+The current pane is split into two, top and bottom
+The program passed as argument will be executed in the new terminal' \
+%{
+    set global zellij_run_options "--direction down"
+    zellij-run %arg{@}
+}
+complete-command zellij-terminal-vertical shell
+
+define-command zellij-terminal-horizontal -params 1.. -docstring '
+zellij-terminal-horizontal <program> [<arguments>]: create a new terminal as a zellij pane
+The current pane is split into two, left and right
+The program passed as argument will be executed in the new terminal' \
+%{
+    set global zellij_run_options "--direction right"
+    zellij-run %arg{@}
+}
+complete-command zellij-terminal-horizontal shell
+
+define-command zellij-focus -params ..1 -docstring '
+zellij-focus [<client>]: focus the given client
+If no client is passed then the current one is used' \
+%{ evaluate-commands %sh{
+    if [ $# -eq 1 ]; then
+        printf "evaluate-commands -client '%s' focus" "$1"
+    elif [ -n "${kak_client_env_ZELLIJ}" ]; then
+        output=$(mktemp -d "${TMPDIR:-/tmp}"/kak-zellij.XXXXXXXX)/dump-screen
+        pane_count=0
+        while [ $((pane_count+=1)) -lt 10 ]; do
+             if zellij action dump-screen "$output" && grep "${kak_client}@\[$kak_session\]" "$output" > /dev/null ; then
+                 break;
+             fi
+             zellij action focus-next-pane
+        done
+        rm -r $(dirname $output)
+    fi
+}}
+complete-command -menu zellij-focus client
+
+## The default behaviour for the `new` command is to open an horizontal pane in a zellij session
+alias global focus zellij-focus
+alias global terminal zellij-terminal-impl
+
+}
+