Sway Windows Manager Alt Tab behavior

alttab

#!/usr/bin/env python3

import sys
import json
import subprocess

direction=bool(sys.argv[1] == 't' or sys.argv[1] == 'T')
swaymsg = subprocess.run(['swaymsg', '-t', 'get_tree'], stdout=subprocess.PIPE)
data = json.loads(swaymsg.stdout)
current = data["nodes"][1]["current_workspace"]
workspace = int(data["nodes"][1]["current_workspace"])-1
roi = data["nodes"][1]["nodes"][workspace]
temp = roi
windows = list()

def getNextWindow():
    if focus < len(windows) - 1:
        return focus+1
    else:
        return 0

def getPrevWindow():
    if focus > 0:
        return focus-1
    else:
        return len(windows)-1

def makelist(temp):
    for nodes in "floating_nodes", "nodes":
        for i in range(len(temp[nodes])):
            if temp[nodes][i]["name"] is None:
               makelist(temp[nodes][i])
            else:
               windows.append(temp[nodes][i])
           
def focused(temp_win):
    for i in range(len(temp_win)):
        if temp_win[i]["focused"] == True:
           return i

makelist(temp)
# print(len(windows))
focus = focused(windows)
if str(sys.argv[1]) == 't' or str(sys.argv[1]) == 'T':
    print(windows[getNextWindow()]["id"])
else:
    print(windows[getPrevWindow()]["id"])

config

bindsym $mod+tab exec swaymsg [con_id=$(swaymsg -t get_tree | ~/.config/sway/alttab t)] focus
bindsym $mod+shift+tab exec swaymsg [con_id=$(swaymsg -t get_tree | ~/.config/sway/alttab f)] focus

There is quite some room for simplification by using the i3ipc python module:

#!/usr/bin/env python3
import i3ipc
import sys
def main():
    sway = i3ipc.Connection()
    for workspace in [ws for output in sway.get_tree().nodes for ws in output.nodes]:
        focus = workspace.find_focused()
        if focus is None:
            continue
        descendants = [d for d in workspace.descendants() if d.name is not None]
        focus = descendants.index(focus)
        focus = (focus + 1 if sys.argv[1] == "next" else focus - 1) % len(descendants)
        sway.command(f"[con_id={descendants[focus].id}] focus")
        sys.exit()
if __name__ == '__main__':
    main()

Does it work on hyprland as well?

swtchr

for hyprland, hyprswitch

I was badly missing Alt+Tab+Tab behavior (to circulate to other than the previous window).

Solution: to differentiate

• "press Alt, press&release Tab, release Alt" twice and
• "press Alt, press&release Tab, press&release Tab",

one can bind the Alt press:

bindsym Alt_L exec ...

and take it into account. Example : https://framagit.org/prigaux/scripts/-/blob/master/sway-alttab