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package main // import "hhvn.uk/hbspbar"
import (
"os"
"strings"
"syscall"
"os/signal"
"hhvn.uk/hbspbar/common"
"hhvn.uk/hbspbar/bspc"
"hhvn.uk/hbspbar/bar"
)
var reloadEvents = []string{
"monitor_rename",
"monitor_swap",
"monitor_focus",
"monitor_remove",
"monitor_geometry", // only event we get for monitors on restart
"desktop_add",
"desktop_rename",
"desktop_remove",
"desktop_swap",
"desktop_transfer",
"desktop_focus",
"desktop_activate",
"desktop_layout",
"node_add",
"node_remove",
"node_swap",
"node_transfer" }
func reloadState(current *bspc.State) (*bspc.State, error) {
state, err := bspc.LoadState()
if err != nil {
return current, err
} else {
return state, nil
}
}
func handleEvents(events *bspc.Subscriber) (chan error, chan bool) {
var event *bspc.Event
errors := make(chan error)
reload := make(chan bool)
go func(){ for {
select {
case err := <-events.Err:
errors <- err
return
case event = <- events.Event:
}
if strings.HasPrefix(event.Name, "monitor_") {
id, err := common.Intify(event.Tokens[0])
if err == nil {
switch (event.Name) {
case "monitor_add":
case "monitor_geometry":
bar.Handle.Create <- id
case "monitor_remove":
bar.Handle.Destroy <- id
}
}
}
for i := 0; i < len(reloadEvents); i++ {
if event.Name == reloadEvents[i] {
reload <- true
}
}
}}()
return errors, reload
}
func main() {
signals := make(chan os.Signal, 1)
signal.Notify(signals,
syscall.SIGINT,
syscall.SIGHUP,
syscall.SIGTERM)
state, err := bspc.LoadState()
if err != nil {
common.Error("Couldn't load bspwm state: %s\n", err)
return
}
events, err := bspc.Subscribe()
if err != nil {
common.Error("Couldn't subscribe to bspwm: %s\n", err)
return
}
defer events.Close()
everr, evreload := handleEvents(events)
if bar.InitErr != nil {
common.Error("Couldn't initialize X: %s\n", err)
return
}
defer bar.Cleanup()
bar.Handle.NewState <- state
for _, m := range state.Monitors {
bar.Handle.Create <- m.ID
}
for {
select {
case err := <- everr:
common.Error("Couldn't read event: %s\n", err)
return
case s := <- signals:
common.Error("%s\n", s)
return
case err := <- bar.Handle.Err:
common.Error("%s\n", err)
return
case <- evreload:
state, err = reloadState(state)
if err != nil {
common.Error("Couldn't reload bspwm state: %s\n", err)
}
// Check if there's been an error before sending the
// new state (or else the program gets stuck)
select {
case err := <- bar.Handle.Err:
common.Error("%s\n", err)
return
default:
}
bar.Handle.NewState <- state
}
}
}
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