[polybar] Add a MVP task_manager module

.config/polybar/bar.ini

@@ -32,6 +32,7 @@ radius-bottom = 0.0
 
 border-bottom-size = 3
 border-color = ${colors.primary}
+padding-left = 2
 padding-right = 2
 
 module-margin-left = 1
@@ -65,7 +66,7 @@ font-2 = "Material Icons:size=16;1"
 font-3 = NotoSans-Regular:size=18:weight=bold;2
 font-4 = NotoSans-Regular:size=18:weight=bold;-7
 
-modules-left = spotify
+modules-left = taskbar1 taskbar2 taskbar3 taskbar4 taskbar5 taskbar6 taskbar7 taskbar8 taskbar9 taskbar10 spotify
 modules-center = custom_date
 modules-right = updates cpu_bar memory_bar vpn network_usage alsa_bar
 

.config/polybar/launch.sh

@@ -1,14 +1,21 @@
 #!/usr/bin/env bash
 
-killall -q polybar
-while pgrep -u "$(id -u)" -x polybar >/dev/null; do sleep 1; done
+pkill polybar
+pkill -f "task_manager --daemon"
+while pgrep -u "$(id -u)" -x polybar >/dev/null; do
+    sleep 0.5;
+done
 
 export TERMINAL_CMD="tilix --profile orange --new-process -e"
-WM_CONTROL="$(dirname "$0")/scripts/switch_window_state"
-export WM_CONTROL
+export WM_CONTROL="$(dirname "$0")/scripts/switch_window_state"
 
 for monitor in $(polybar --list-monitors | cut -d":" -f1); do
     export MONITOR=$monitor
     polybar top -c ~/.config/polybar/bar.ini >/dev/null  &
 done
 
+until pgrep -u "$(id -u)" -x polybar >/dev/null; do
+    sleep 0.5
+done
+
+~/.config/polybar/scripts/task_manager --daemon &

.config/polybar/modules.ini

@@ -153,3 +153,45 @@ exec = ~/.config/polybar/scripts/check_updates
 tail = true
 interval = 5
 click-left = $TERMINAL_CMD "yay -Suy" &
+
+
+[module/taskbar1]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 1
+hook-1 = echo ""
+[module/taskbar2]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 2
+hook-1 = echo ""
+[module/taskbar3]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 3
+hook-1 = echo ""
+[module/taskbar4]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 4
+hook-1 = echo ""
+[module/taskbar5]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 5
+hook-1 = echo ""
+[module/taskbar6]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 6
+hook-1 = echo ""
+[module/taskbar7]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 7
+hook-1 = echo ""
+[module/taskbar8]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 8
+hook-1 = echo ""
+[module/taskbar9]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 9
+hook-1 = echo ""
+[module/taskbar10]
+type = custom/ipc
+hook-0 = ~/.config/polybar/scripts/task_manager --window 10
+hook-1 = echo ""

.config/polybar/scripts/task_manager

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+STATUS_FILE=/dev/shm/polybar_task_manager
+REFRESH=2
+MAX_TASKS=10
+
+show_tasks()
+{
+    wmctrl -lx | awk '{if ($2 > -1) print $3}' \
+               | awk -F'.' '{ print $NF }' \
+               | tail -$MAX_TASKS | sort > $STATUS_FILE.current
+
+    diff -q $STATUS_FILE $STATUS_FILE.current > /dev/null 2>&1
+    if [ $? -ne 1 ]; then
+        return 0
+    fi
+
+    mv $STATUS_FILE.current $STATUS_FILE
+
+    counter=1
+    num_windows=$(wc -l $STATUS_FILE | cut -f 1 -d " ")
+    while [ $counter -le "$MAX_TASKS" ]; do
+        if [ $counter -le "$num_windows" ]; then
+            polybar-msg hook taskbar$counter 1 > /dev/null
+        else
+            polybar-msg hook taskbar"$counter" 2 > /dev/null
+        fi
+
+        sleep 0.1
+        counter=$((counter+1))
+    done
+}
+
+daemon()
+{
+    while true; do
+        show_tasks
+        sleep $REFRESH
+    done
+}
+
+if [ "$1" = "--daemon" ]; then
+    > /dev/shm/polybar_task_manager
+    daemon
+fi
+
+if [ "$1" = "--window" ]; then
+    sed "${2}q;d" $STATUS_FILE
+fi
+
+exit 1