bump version

* add --prev option
* sort floating_nodes to avoid skipping floating windows

README.md

@@ -24,6 +24,13 @@ Add such a line to your sway config file (e.g. in `$HOME/.config/sway/config`):
 bindsym $mod+Tab exec ~/bin/swaycycle
 ```
 
+You may  also add  a second key  binding to do  the reverse,  which is
+sometimes very useful:
+
+```default
+bindsym $mod+Shift+Tab exec ~/bin/swaycycle --prev
+```
+
 ## Debugging
 
 You may call `swaycycle` in a terminal window on a workspace with at

go.mod

@@ -3,16 +3,14 @@ module swaycycle
 go 1.23
 
 require (
-	github.com/lmittmann/tint v1.1.2
+	github.com/alecthomas/repr v0.5.1 // indirect
-	github.com/mattn/go-isatty v0.0.20
-	github.com/spf13/pflag v1.0.7
-	github.com/tlinden/swayipc v0.3.0
-	github.com/tlinden/yadu v0.1.3
-)
-
-require (
 	github.com/fatih/color v1.16.0 // indirect
+	github.com/lmittmann/tint v1.1.2 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/spf13/pflag v1.0.7 // indirect
+	github.com/tlinden/i3ipc v0.0.0-20250815101608-4f7e27528be3 // indirect
+	github.com/tlinden/yadu v0.1.3 // indirect
 	golang.org/x/sys v0.14.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,3 +1,5 @@
+github.com/alecthomas/repr v0.5.1 h1:E3G4t2QbHTSNpPKBgMTln5KLkZHLOcU7r37J4pXBuIg=
+github.com/alecthomas/repr v0.5.1/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
 github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
 github.com/lmittmann/tint v1.1.2 h1:2CQzrL6rslrsyjqLDwD11bZ5OpLBPU+g3G/r5LSfS8w=
@@ -9,17 +11,15 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/spf13/pflag v1.0.7 h1:vN6T9TfwStFPFM5XzjsvmzZkLuaLX+HS+0SeFLRgU6M=
 github.com/spf13/pflag v1.0.7/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/tlinden/swayipc v0.0.0-20250816175030-177eecd4757f h1:SP/fEurr6crxQI+j85L61rMppsHmOlJwxVzXnCvYJ40=
+github.com/tlinden/i3ipc v0.0.0-20250815101608-4f7e27528be3 h1:/kIZO4852sAVemXtqnsBid0r4Q1h87jDwHa8f7v1h5I=
-github.com/tlinden/swayipc v0.0.0-20250816175030-177eecd4757f/go.mod h1:JwlMIC7eBwV8soCt2UDqlAyBudobLo07ZvepIA0irY8=
+github.com/tlinden/i3ipc v0.0.0-20250815101608-4f7e27528be3/go.mod h1:mc0toDHmgqgX6FpE69U5yMPnHuLTdekHRslSLDp8xSE=
-github.com/tlinden/swayipc v0.3.0 h1:hGNWeEZUZIHfeP+MxpAKsUzPf3YSJ0FYX2XEu/yqNXA=
-github.com/tlinden/swayipc v0.3.0/go.mod h1:JwlMIC7eBwV8soCt2UDqlAyBudobLo07ZvepIA0irY8=
 github.com/tlinden/yadu v0.1.3 h1:5cRCUmj+l5yvlM2irtpFBIJwVV2DPEgYSaWvF19FtcY=
 github.com/tlinden/yadu v0.1.3/go.mod h1:l3bRmHKL9zGAR6pnBHY2HRPxBecf7L74BoBgOOpTcUA=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
 golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -24,10 +24,11 @@ import (
 	"log/slog"
 	"os"
 	"runtime/debug"
+	"sort"
 
 	"github.com/lmittmann/tint"
 	"github.com/mattn/go-isatty"
-	"github.com/tlinden/swayipc"
+	"github.com/tlinden/i3ipc"
 	"github.com/tlinden/yadu"
 
 	flag "github.com/spf13/pflag"
@@ -42,14 +43,23 @@ const (
 
 	LevelNotice = slog.Level(2)
 
-	VERSION = "v0.4.0"
+	VERSION = "v0.3.1"
+
+	IPC_HEADER_SIZE = 14
+	IPC_MAGIC       = "i3-ipc"
+
+	// message types
+	IPC_GET_TREE    = 4
+	IPC_RUN_COMMAND = 0
 )
 
 var (
-	Visibles         = []*swayipc.Node{}
+	Visibles         = []*i3ipc.Node{}
 	CurrentWorkspace = ""
+	Previous         = false
 	Debug            = false
 	Dumptree         = false
+	Dumpvisibles     = false
 	Version          = false
 	Verbose          = false
 	Notswitch        = false
@@ -62,9 +72,11 @@ const Usage string = `This is swaycycle - cycle focus through all visible window
 Usage: swaycycle [-vdDn] [-l <log>]
 
 Options:
+  -p, --prev             cycle backward
   -n, --no-switch        do not switch windows
   -d, --debug            enable debugging
   -D, --dump             dump the sway tree (needs -d as well)
+      --dump-visibles    dump a list of visible windows on current workspace (needs -d)
   -l, --logfile string   write output to logfile
   -v, --version          show program version
 
@@ -73,8 +85,10 @@ Licensed under the terms of the GNU GPL version 3.
 `
 
 func main() {
+	flag.BoolVarP(&Previous, "prev", "p", false, "cycle backward")
 	flag.BoolVarP(&Debug, "debug", "d", false, "enable debugging")
 	flag.BoolVarP(&Dumptree, "dump", "D", false, "dump the sway tree (needs -d as well)")
+	flag.BoolVarP(&Dumpvisibles, "dump-visibles", "", false, "dump a list of visible windows on current workspace (needs -d)")
 	flag.BoolVarP(&Notswitch, "no-switch", "n", false, "do not switch windows")
 	flag.BoolVarP(&Version, "version", "v", false, "show program version")
 	flag.BoolVarP(&Showhelp, "help", "h", Showhelp, "show help")
@@ -105,7 +119,7 @@ func main() {
 	}
 
 	// connect to sway unix socket
-	ipc := swayipc.NewSwayIPC()
+	ipc := i3ipc.NewI3ipc()
 
 	err := ipc.Connect()
 	if err != nil {
@@ -127,8 +141,14 @@ func main() {
 		os.Exit(0)
 	}
 
-	id := findNextWindow()
+	id := 0
+	if Previous {
+		id = findPrevWindow()
+		slog.Debug("findPrevWindow", "nextid", id)
+	} else {
+		id = findNextWindow()
 		slog.Debug("findNextWindow", "nextid", id)
+	}
 
 	if id > 0 && !Notswitch {
 		switchFocus(id, ipc)
@@ -137,7 +157,7 @@ func main() {
 
 // get into the sway tree, determine current workspace and extract all
 // its visible windows, store them in the global var Visibles
-func processJSON(sway *swayipc.Node) error {
+func processJSON(sway *i3ipc.Node) error {
 	if !istype(sway, root) && len(sway.Nodes) == 0 {
 		return fmt.Errorf("Invalid or empty JSON structure")
 	}
@@ -155,7 +175,9 @@ func processJSON(sway *swayipc.Node) error {
 		}
 	}
 
-	slog.Debug("processed visible windows", "visibles", Visibles)
+	if Dumpvisibles {
+		dumpVisibles()
+	}
 
 	return nil
 }
@@ -187,8 +209,26 @@ func findNextWindow() int {
 	return 0
 }
 
+func findPrevWindow() int {
+	vislen := len(Visibles)
+	if vislen == 0 {
+		return 0
+	}
+
+	prevnode := Visibles[vislen-1].Id
+
+	for _, node := range Visibles {
+		if node.Focused {
+			return prevnode
+		}
+		prevnode = node.Id
+	}
+
+	return 0
+}
+
 // actually switch focus using a swaymsg command
-func switchFocus(id int, ipc *swayipc.SwayIPC) error {
+func switchFocus(id int, ipc *i3ipc.I3ipc) error {
 	responses, err := ipc.RunContainerCommand(id, "focus")
 	if err != nil {
 		log.Fatalf("failed to send focus command to container %d: %w (%s)",
@@ -201,13 +241,19 @@ func switchFocus(id int, ipc *swayipc.SwayIPC) error {
 }
 
 // iterate recursively over given node list extracting visible windows
-func recurseNodes(nodes []*swayipc.Node) {
+func recurseNodes(nodes []*i3ipc.Node) {
 	for _, node := range nodes {
-		// we handle nodes and floating_nodes identical
-		node.Nodes = append(node.Nodes, node.FloatingNodes...)
 
 		if istype(node, workspace) {
 			if node.Name == CurrentWorkspace {
+				//floating_nodes need to be sorted because
+				//order changes each time they are focused.
+				FloatVis := node.FloatingNodes
+				sort.Slice(FloatVis, func(i, j int) bool {
+					return FloatVis[i].Id < FloatVis[j].Id
+				})
+				//now we can handle nodes and floating_nodes identical
+				node.Nodes = append(node.Nodes, FloatVis...)
 				recurseNodes(node.Nodes)
 				return
 			}
@@ -227,6 +273,16 @@ func recurseNodes(nodes []*swayipc.Node) {
 	}
 }
 
+func dumpVisibles() {
+	windows := make([]string, len(Visibles))
+
+	for idx, node := range Visibles {
+		windows[idx] = fmt.Sprintf("id: %02d, focus: %5t, name: %s", node.Id, node.Focused, node.Name)
+	}
+
+	slog.Debug("visible windows on current workspace", "visibles", windows)
+}
+
 // we use line wise logging, unless debugging is enabled
 func setupLogging(output io.Writer) {
 	logLevel := &slog.LevelVar{}
@@ -268,7 +324,7 @@ func setupLogging(output io.Writer) {
 }
 
 // little helper to distinguish sway tree node types
-func istype(nd *swayipc.Node, which int) bool {
+func istype(nd *i3ipc.Node, which int) bool {
 	switch nd.Type {
 	case "root":
 		return which == root