Merge pull request #32 from nwg-piotr/fix31

Hide resident window on SIGUSR1 if visible

Makefile

@@ -6,11 +6,14 @@ get:
 	go get github.com/joshuarubin/go-sway
 	go get github.com/allan-simon/go-singleinstance
 	go get "github.com/sirupsen/logrus"
+	go get github.com/fsnotify/fsnotify
 
 build:
-	go build -o bin/nwg-drawer *.go
+	go build -o bin/nwg-drawer .
 
 install:
+	-pkill -f nwg-drawer
+	sleep 1
 	mkdir -p /usr/share/nwg-drawer
 	cp -r desktop-directories /usr/share/nwg-drawer
 	cp drawer.css /usr/share/nwg-drawer
@@ -21,5 +24,4 @@ uninstall:
 	rm /usr/bin/nwg-drawer
 
 run:
-	go build -o bin/nwg-drawer *.go
-	bin/nwg-drawer
+	go run .

README.md

@@ -21,6 +21,11 @@ and `nwggrid`.
 
 [![Packaging status](https://repology.org/badge/vertical-allrepos/nwg-drawer.svg)](https://repology.org/project/nwg-drawer/versions)
 
+## v0.2.x note
+
+1. Placing config files in the nwg-panel config directory was a mistake, sorry. The 0.2.0 version migrates them to `~/.config/nwg-drawer`.
+2. From now on you may run the program residently, which should speed it up. See "Running" below.
+
 ## Installation
 
 ### Dependencies
@@ -55,12 +60,13 @@ $ nwg-drawer -h
 Usage of nwg-drawer:
   -c uint
     	number of Columns (default 6)
+  -d	Turn on Debug messages
   -fm string
     	File Manager (default "thunar")
   -fscol uint
     	File Search result COLumns (default 2)
   -fslen int
-    	File Search name length Limit (default 80)
+    	File Search name LENgth Limit (default 80)
   -is int
     	Icon Size (default 64)
   -lang string
@@ -73,6 +79,7 @@ Usage of nwg-drawer:
     	name of the Output to display the drawer on (sway only)
   -ovl
     	use OVerLay layer
+  -r	Leave the program resident in memory
   -s string
     	Styling: css file name (default "drawer.css")
   -spacing uint
@@ -84,9 +91,43 @@ Usage of nwg-drawer:
 
   *NOTE: the `$TERM` environment variable overrides the `-term` argument if defined.*
 
+## Running
+
+Since v0.2.x you may use the drawer in two ways:
+
+1. Simply run the `nwg-drawer` command, by adding a key binding to your sway config file, e.g.:
+
+```text
+bindsym Mod1+F1 exec nwg-drawer
+```
+
+2. Run a resident instance on startup, and use the `nwg-drawer` command to show the window, e.g.:
+
+```text
+exec_always nwg-drawer -r
+bindsym Mod1+F1 exec nwg-drawer
+```
+
+The second line does nothing but `pkill -USR1 nwg-drawer`, so you may just use this command instead. Actually
+this should be a little bit faster.
+
+Running a resident instance should speed up use of the drawer significantly. Pay attention to the fact, that you
+need to `pkill -f nwg-drawer` and reload sway to apply any new arguments!
+
+## Logging
+
+In case you encounter an issue, you may need debug messages. If you use the resident instance, you'll see nothing
+in the terminal. Please edit your sway config file:
+
+```text
+exec nwg-drawer -r -d 2> ~/drawer.log
+```
+
+exit sway, launch it again and include the `drawer.log` content in the GitHub issue. Do not use `exec_always` here: it'll destroy the log file content on sway reload.
+
 ## Styling
 
-Edit `~/.config/nwg-panel/drawer.css` to your taste.
+Edit `~/.config/nwg-drawer/drawer.css` to your taste.
 
 ## Files
 
@@ -97,7 +138,7 @@ When the search phrase is at least 3 characters long, your XDG user directories
 Use the **left mouse button** to open a file with the `xdg-open` command. As configuring file associations for it is
 PITA, you may override them, by creating the `~/.config/nwg-panel/preferred-apps.json` file with your own definitions.
 
-### Sample file content
+### Sample `preferred-apps.json` file content
 
 ```json
 {
@@ -110,8 +151,8 @@ PITA, you may override them, by creating the `~/.config/nwg-panel/preferred-apps
 }
 ```
 
-Use the **right mouse button** to open the file with your file manager (see `-fm` argument). The result depends on the
-file manager you use.
+Use the **right mouse button** to open the file with your file manager (see `-fm` argument). The result depends
+on the file manager you use.
 
 - thunar will open the file location
 - pcmanfm will open the file with its associated program
@@ -119,6 +160,16 @@ file manager you use.
 
 I've noy yet tried other file managers.
 
+### File search exclusions
+
+You may want to exclude some paths inside your XDG user directories from searching. If so, define exclusions in the
+`~/.config/nwg-panel/excluded-dirs` file, e.g. like this:
+
+```text
+# exclude all paths containing 'node_modules'
+node_modules
+```
+
 ## Credits
 
 This program uses some great libraries:
@@ -128,3 +179,5 @@ Copyright (c) 2015-2018 gotk3 contributors
 - [gotk3-layershell](https://github.com/dlasky/gotk3-layershell) by [@dlasky](https://github.com/dlasky/gotk3-layershell/commits?author=dlasky) - many thanks for writing this software, and for patience with my requests!
 - [go-sway](https://github.com/joshuarubin/go-sway) Copyright (c) 2019 Joshua Rubin
 - [go-singleinstance](github.com/allan-simon/go-singleinstance) Copyright (c) 2015 Allan Simon
+- [logrus](https://github.com/sirupsen/logrus) Copyright (c) 2014 Simon Eskildsen
+- [fsnotify](https://github.com/fsnotify/fsnotify) Copyright (c) 2012-2019 fsnotify Authors

go.mod

@@ -4,8 +4,9 @@ go 1.16
 
 require (
 	github.com/allan-simon/go-singleinstance v0.0.0-20210120080615-d0997106ab37
-	github.com/dlasky/gotk3-layershell v0.0.0-20210331230524-5cca0b819261
-	github.com/gotk3/gotk3 v0.6.0
+	github.com/dlasky/gotk3-layershell v0.0.0-20210827021656-e6ecab2731f7
+	github.com/fsnotify/fsnotify v1.5.1
+	github.com/gotk3/gotk3 v0.6.1
 	github.com/joshuarubin/go-sway v0.0.4
 	github.com/sirupsen/logrus v1.8.1
 )

go.sum

@@ -3,11 +3,12 @@ github.com/allan-simon/go-singleinstance v0.0.0-20210120080615-d0997106ab37/go.m
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dlasky/gotk3-layershell v0.0.0-20210331230524-5cca0b819261 h1:eoXn91ckLWKMXmQKX34UHEF2XMyQpRnnP80fDiu+kys=
-github.com/dlasky/gotk3-layershell v0.0.0-20210331230524-5cca0b819261/go.mod h1:d56Gslp3IaiT8lqxD/lO1Msz1wYgD8D/HTKHgSdg9tU=
-github.com/gotk3/gotk3 v0.5.3-0.20210223154815-289cfb6dbf32/go.mod h1:/hqFpkNa9T3JgNAE2fLvCdov7c5bw//FHNZrZ3Uv9/Q=
-github.com/gotk3/gotk3 v0.6.0 h1:Aqlq4/6VabNwtCyA9M9zFNad5yHAqCi5heWnZ9y+3dA=
-github.com/gotk3/gotk3 v0.6.0/go.mod h1:/hqFpkNa9T3JgNAE2fLvCdov7c5bw//FHNZrZ3Uv9/Q=
+github.com/dlasky/gotk3-layershell v0.0.0-20210827021656-e6ecab2731f7 h1:LDo0kwt+oW9a4lWlj2OakIgMW1ySXXVRGFt8GHUdYYA=
+github.com/dlasky/gotk3-layershell v0.0.0-20210827021656-e6ecab2731f7/go.mod h1:JHLx2Wz4mAPVwn4PFhC69ydwyHP4A3wQvlg7HKVVc1U=
+github.com/fsnotify/fsnotify v1.5.1 h1:mZcQUHVQUQWoPXXtuf9yuEXKudkV2sx1E06UadKWpgI=
+github.com/fsnotify/fsnotify v1.5.1/go.mod h1:T3375wBYaZdLLcVNkcVbzGHY7f1l/uK5T5Ai1i3InKU=
+github.com/gotk3/gotk3 v0.6.1 h1:GJ400a0ecEEWrzjBvzBzH+pB/esEMIGdB9zPSmBdoeo=
+github.com/gotk3/gotk3 v0.6.1/go.mod h1:/hqFpkNa9T3JgNAE2fLvCdov7c5bw//FHNZrZ3Uv9/Q=
 github.com/joshuarubin/go-sway v0.0.4 h1:dpmIwQ/LytG+oMrjmaVKdk1aPdW2feXK/+wAcLKIx4A=
 github.com/joshuarubin/go-sway v0.0.4/go.mod h1:qcDd6f25vJ0++wICwA1BainIcRC67p2Mb4lsrZ0k3/k=
 github.com/joshuarubin/lifecycle v1.0.0 h1:N/lPEC8f+dBZ1Tn99vShqp36LwB+LI7XNAiNadZeLUQ=
@@ -26,5 +27,6 @@ go.uber.org/multierr v1.1.0 h1:HoEmRHQPVSqub6w2z2d2EOVs2fjyFRGyofhKuyDq0QI=
 go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
 golang.org/x/sync v0.0.0-20190412183630-56d357773e84 h1:IqXQ59gzdXv58Jmm2xn0tSOR9i6HqroaOFRQ3wR/dJQ=
 golang.org/x/sync v0.0.0-20190412183630-56d357773e84/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
 golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"os/signal"
+	"path"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -20,16 +21,16 @@ import (
 	"github.com/gotk3/gotk3/gtk"
 )
 
-const version = "0.1.12"
+const version = "0.2.0"
 
 var (
 	appDirs         []string
 	configDirectory string
 	pinnedFile      string
 	pinned          []string
-	src             glib.SourceHandle
 	id2entry        map[string]desktopEntry
 	preferredApps   map[string]interface{}
+	exclusions      []string
 )
 
 var categoryNames = [...]string{
@@ -82,6 +83,7 @@ var desktopEntries []desktopEntry
 
 // UI elements
 var (
+	win                     *gtk.Window
 	resultWindow            *gtk.ScrolledWindow
 	fileSearchResults       []string
 	searchEntry             *gtk.SearchEntry
@@ -98,6 +100,9 @@ var (
 	statusLabel             *gtk.Label
 	status                  string
 	ignore                  string
+	showWindowTrigger       bool
+	desktopTrigger          bool
+	pinnedTrigger           bool
 )
 
 func defaultStringIfBlank(s, fallback string) string {
@@ -122,48 +127,84 @@ var itemSpacing = flag.Uint("spacing", 20, "icon spacing")
 var lang = flag.String("lang", "", "force lang, e.g. \"en\", \"pl\"")
 var fileManager = flag.String("fm", "thunar", "File Manager")
 var term = flag.String("term", defaultStringIfBlank(os.Getenv("TERM"), "alacritty"), "Terminal emulator")
-var nameLimit = flag.Int("fslen", 80, "File Search name length Limit")
+var nameLimit = flag.Int("fslen", 80, "File Search name LENgth Limit")
 var noCats = flag.Bool("nocats", false, "Disable filtering by category")
 var noFS = flag.Bool("nofs", false, "Disable file search")
+var resident = flag.Bool("r", false, "Leave the program resident in memory")
+var debug = flag.Bool("d", false, "Turn on Debug messages")
 
 func main() {
 	timeStart := time.Now()
 	flag.Parse()
 
+	if *debug {
+		log.SetLevel(log.DebugLevel)
+	}
+
 	if *displayVersion {
 		fmt.Printf("nwg-drawer version %s\n", version)
 		os.Exit(0)
 	}
 
 	// Gentle SIGTERM handler thanks to reiki4040 https://gist.github.com/reiki4040/be3705f307d3cd136e85
+	// v0.2: we also need to support SIGUSR from now on
 	signalChan := make(chan os.Signal, 1)
-	signal.Notify(signalChan, syscall.SIGTERM)
+	signal.Notify(signalChan, syscall.SIGTERM, syscall.SIGUSR1)
+
 	go func() {
 		for {
 			s := <-signalChan
-			if s == syscall.SIGTERM {
-				log.Info("SIGTERM received, bye bye!")
+			switch s {
+			case syscall.SIGTERM:
+				log.Info("SIGTERM received, bye bye")
 				gtk.MainQuit()
+			case syscall.SIGUSR1:
+				if *resident {
+					// As win.Show() called from inside a goroutine randomly crashes GTK,
+					// let's just set e helper variable here. We'll be checking it with glib.TimeoutAdd.
+					if !win.IsVisible() {
+						log.Debug("SIGUSR1 received, showing the window")
+						showWindowTrigger = true
+					} else {
+						log.Debug("SIGUSR1 received, hiding the window")
+						restoreStateAndHide()
+					}
+				} else {
+					log.Info("SIGUSR1 received, and I'm not resident, bye bye")
+					gtk.MainQuit()
+				}
+			default:
+				log.Info("Unknown signal")
 			}
 		}
 	}()
 
-	// We want the same key/mouse binding to turn the dock off: kill the running instance and exit.
-	lockFilePath := fmt.Sprintf("%s/nwg-drawer.lock", tempDir())
+	// If running instance found, we want it to show the window. The new instance will send SIGUSR1 and die
+	// (equivalent of `pkill -USR1 nwg-drawer`).
+	// Otherwise the command may behave in two ways:
+	// 	1. kill the running non-residennt instance and exit;
+	// 	2. die if a resident instance found.
+	lockFilePath := path.Join(tempDir(), "nwg-drawer.lock")
 	lockFile, err := singleinstance.CreateLockFile(lockFilePath)
 	if err != nil {
 		pid, err := readTextFile(lockFilePath)
 		if err == nil {
 			i, err := strconv.Atoi(pid)
 			if err == nil {
-				log.Info("Running instance found, sending SIGTERM and exiting...")
-				syscall.Kill(i, syscall.SIGTERM)
+				if *resident {
+					log.Warnf("Resident instance already running (PID %v)", i)
+				} else {
+					log.Infof("Showing resident instance (PID %v)", i)
+					syscall.Kill(i, syscall.SIGUSR1)
+				}
 			}
 		}
 		os.Exit(0)
 	}
 	defer lockFile.Close()
 
+	log.Infof("term: %s", *term)
+
 	// LANGUAGE
 	if *lang == "" && os.Getenv("LANG") != "" {
 		*lang = strings.Split(os.Getenv("LANG"), ".")[0]
@@ -173,6 +214,29 @@ func main() {
 	// ENVIRONMENT
 	configDirectory = configDir()
 
+	// Placing the drawer config files in the nwg-panel config directory was a mistake.
+	// Let's move them to their own location.
+	oldConfigDirectory, err := oldConfigDir()
+	if err == nil {
+		for _, p := range []string{"drawer.css", "preferred-apps.json"} {
+			if pathExists(path.Join(oldConfigDirectory, p)) {
+				log.Infof("File %s found in stale location, moving to %s", p, configDirectory)
+				if !pathExists(path.Join(configDirectory, p)) {
+					err = os.Rename(path.Join(oldConfigDirectory, p), path.Join(configDirectory, p))
+					if err == nil {
+						log.Info("Success")
+					} else {
+						log.Warn(err)
+					}
+				} else {
+					log.Warnf("Failed moving %s to %s: path already exists!", path.Join(oldConfigDirectory, p), path.Join(configDirectory, p))
+				}
+
+			}
+		}
+	}
+
+	// Copy default style sheet if not found
 	if !pathExists(filepath.Join(configDirectory, "drawer.css")) {
 		copyFile(filepath.Join(getDataHome(), "nwg-drawer/drawer.css"), filepath.Join(configDirectory, "drawer.css"))
 	}
@@ -190,7 +254,9 @@ func main() {
 	}
 	log.Info(fmt.Sprintf("Found %v pinned items", len(pinned)))
 
-	cssFile := filepath.Join(configDirectory, *cssFileName)
+	if !strings.HasPrefix(*cssFileName, "/") {
+		*cssFileName = filepath.Join(configDirectory, *cssFileName)
+	}
 
 	appDirs = getAppDirs()
 
@@ -203,12 +269,29 @@ func main() {
 
 	// For opening files we use xdg-open. As its configuration is PITA, we may override some associations
 	// in the ~/.config/nwg-panel/preferred-apps.json file.
-	paFile := filepath.Join(configDirectory, "preferred-apps.json")
-	preferredApps, err = loadPreferredApps(paFile)
-	if err != nil {
-		log.Error(fmt.Sprintf("Custom associations file %s not found or invalid", paFile))
+	paFile := path.Join(configDirectory, "preferred-apps.json")
+	if pathExists(paFile) {
+		preferredApps, err = loadPreferredApps(paFile)
+		if err != nil {
+			log.Infof("Custom associations file %s not found or invalid", paFile)
+		} else {
+			log.Infof("Found %v associations in %s", len(preferredApps), paFile)
+		}
 	} else {
-		log.Info(fmt.Sprintf("Found %v associations in %s", len(preferredApps), paFile))
+		log.Infof("%s file not found", paFile)
+	}
+
+	// Load user-defined paths excluded from file search
+	exFile := path.Join(configDirectory, "excluded-dirs")
+	if pathExists(exFile) {
+		exclusions, err = loadTextFile(exFile)
+		if err != nil {
+			log.Infof("Search exclusions file %s not found %s", exFile, err)
+		} else {
+			log.Infof("Found %v search exclusions in %s", len(exclusions), exFile)
+		}
+	} else {
+		log.Infof("%s file not found", exFile)
 	}
 
 	// USER INTERFACE
@@ -216,17 +299,17 @@ func main() {
 
 	cssProvider, _ := gtk.CssProviderNew()
 
-	err = cssProvider.LoadFromPath(cssFile)
+	err = cssProvider.LoadFromPath(*cssFileName)
 	if err != nil {
-		log.Errorf("ERROR: %s css file not found or erroneous. Using GTK styling.", cssFile)
+		log.Errorf("ERROR: %s css file not found or erroneous. Using GTK styling.", *cssFileName)
 		log.Errorf("%s", err)
 	} else {
-		log.Info(fmt.Sprintf("Using style from %s", cssFile))
+		log.Info(fmt.Sprintf("Using style from %s", *cssFileName))
 		screen, _ := gdk.ScreenGetDefault()
 		gtk.AddProviderForScreen(screen, cssProvider, gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
 	}
 
-	win, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
+	win, err = gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
 	if err != nil {
 		log.Fatal("Unable to create window:", err)
 	}
@@ -275,7 +358,11 @@ func main() {
 				searchEntry.GrabFocus()
 				searchEntry.SetText("")
 			} else {
-				gtk.MainQuit()
+				if !*resident {
+					gtk.MainQuit()
+				} else {
+					restoreStateAndHide()
+				}
 			}
 			return false
 		case gdk.KEY_downarrow, gdk.KEY_Up, gdk.KEY_Down, gdk.KEY_Left, gdk.KEY_Right, gdk.KEY_Tab,
@@ -290,18 +377,6 @@ func main() {
 		}
 	})
 
-	// Close the window on leave, but not immediately, to avoid accidental closes
-	win.Connect("leave-notify-event", func() {
-		src = glib.TimeoutAdd(uint(500), func() bool {
-			gtk.MainQuit()
-			return false
-		})
-	})
-
-	win.Connect("enter-notify-event", func() {
-		cancelClose()
-	})
-
 	/*
 		In case someone REALLY needed to use X11 - for some stupid Zoom meeting or something, this allows
 		the drawer to behave properly on Openbox, and possibly somewhere else. For sure not on i3.
@@ -341,13 +416,15 @@ func main() {
 	resultWindow, _ = gtk.ScrolledWindowNew(nil, nil)
 	resultWindow.SetEvents(int(gdk.ALL_EVENTS_MASK))
 	resultWindow.SetPolicy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
-	resultWindow.Connect("enter-notify-event", func() {
-		cancelClose()
-	})
+
 	resultWindow.Connect("button-release-event", func(sw *gtk.ScrolledWindow, e *gdk.Event) bool {
 		btnEvent := gdk.EventButtonNewFromEvent(e)
 		if btnEvent.Button() == 1 || btnEvent.Button() == 3 {
-			gtk.MainQuit()
+			if !*resident {
+				gtk.MainQuit()
+			} else {
+				restoreStateAndHide()
+			}
 			return true
 		}
 		return false
@@ -392,6 +469,7 @@ func main() {
 	statusLineWrapper.PackStart(statusLabel, true, false, 0)
 
 	win.ShowAll()
+
 	if !*noFS {
 		fileSearchResultWrapper.SetSizeRequest(appFlowBox.GetAllocatedWidth(), 1)
 		fileSearchResultWrapper.Hide()
@@ -399,8 +477,69 @@ func main() {
 	if !*noCats {
 		categoriesWrapper.SetSizeRequest(1, categoriesWrapper.GetAllocatedHeight()*2)
 	}
+	if *resident {
+		win.Hide()
+	}
 
 	t := time.Now()
 	log.Info(fmt.Sprintf("UI created in %v ms. Thank you for your patience.", t.Sub(timeStart).Milliseconds()))
+
+	// Check if showing the window has been requested (SIGUSR1)
+	glib.TimeoutAdd(uint(1), func() bool {
+		if showWindowTrigger && win != nil && !win.IsVisible() {
+			win.ShowAll()
+			// focus 1st element
+			b := appFlowBox.GetChildAtIndex(0)
+			if b != nil {
+				button, err := b.GetChild()
+				if err == nil {
+					button.ToWidget().GrabFocus()
+				}
+			}
+		}
+		showWindowTrigger = false
+
+		// some .desktop file changed
+		if desktopTrigger {
+			log.Debug(".desktop file changed")
+			desktopFiles = listDesktopFiles()
+			status = parseDesktopFiles(desktopFiles)
+			appFlowBox = setUpAppsFlowBox(nil, "")
+			desktopTrigger = false
+		}
+
+		// pinned file changed
+		if pinnedTrigger {
+			log.Debug("pinned file changed")
+			pinnedTrigger = false
+			pinned, _ = loadTextFile(pinnedFile)
+			pinnedFlowBox = setUpPinnedFlowBox()
+		}
+		return true
+	})
+
+	go watchFiles()
+
 	gtk.Main()
 }
+
+func restoreStateAndHide() {
+	timeStart1 := time.Now()
+	win.Hide()
+
+	// clear search
+	searchEntry.SetText("")
+
+	// clear category filter (in gotk3 it means: rebuild, as we have no filtering here)
+	appFlowBox = setUpAppsFlowBox(nil, "")
+	for _, btn := range catButtons {
+		btn.SetImagePosition(gtk.POS_LEFT)
+		btn.SetSizeRequest(0, 0)
+	}
+
+	// scroll to the top
+	resultWindow.GetVAdjustment().SetValue(0)
+
+	t := time.Now()
+	log.Debugf(fmt.Sprintf("UI hidden and restored in the backgroud in %v ms", t.Sub(timeStart1).Milliseconds()))
+}

tools.go

@@ -10,6 +10,7 @@ import (
 	"io/ioutil"
 	"os"
 	"os/exec"
+	"path"
 	"path/filepath"
 	"regexp"
 	"sort"
@@ -19,7 +20,6 @@ import (
 	log "github.com/sirupsen/logrus"
 
 	"github.com/gotk3/gotk3/gdk"
-	"github.com/gotk3/gotk3/glib"
 	"github.com/gotk3/gotk3/gtk"
 	"github.com/joshuarubin/go-sway"
 )
@@ -28,19 +28,6 @@ func wayland() bool {
 	return os.Getenv("WAYLAND_DISPLAY") != "" || os.Getenv("XDG_SESSION_TYPE") == "wayland"
 }
 
-/*
-Window leave-notify-event event quits the program with glib Timeout 500 ms.
-We might have left the window by accident, so let's clear the timeout if window re-entered.
-Furthermore - hovering a widget triggers window leave-notify-event event, and the timeout
-needs to be cleared as well.
-*/
-func cancelClose() {
-	if src > 0 {
-		glib.SourceRemove(src)
-		src = 0
-	}
-}
-
 func createPixbuf(icon string, size int) (*gdk.Pixbuf, error) {
 	iconTheme, err := gtk.IconThemeGetDefault()
 	if err != nil {
@@ -163,14 +150,29 @@ func readTextFile(path string) (string, error) {
 	return string(bytes), nil
 }
 
-func configDir() string {
+func oldConfigDir() (string, error) {
 	if os.Getenv("XDG_CONFIG_HOME") != "" {
-		dir := fmt.Sprintf("%s/nwg-panel", os.Getenv("XDG_CONFIG_HOME"))
-		createDir(dir)
-		return (fmt.Sprintf("%s/nwg-panel", os.Getenv("XDG_CONFIG_HOME")))
+		dir := path.Join(os.Getenv("XDG_CONFIG_HOME"), "nwg-panel")
+		return dir, nil
+	} else if os.Getenv("HOME") != "" {
+		dir := path.Join(os.Getenv("HOME"), ".config/nwg-panel")
+		return dir, nil
 	}
-	dir := fmt.Sprintf("%s/.config/nwg-panel", os.Getenv("HOME"))
+
+	return "", errors.New("old config dir not found")
+}
+
+func configDir() string {
+	var dir string
+	if os.Getenv("XDG_CONFIG_HOME") != "" {
+		dir = path.Join(os.Getenv("XDG_CONFIG_HOME"), "nwg-drawer")
+	} else if os.Getenv("HOME") != "" {
+		dir = path.Join(os.Getenv("HOME"), ".config/nwg-drawer")
+	}
+
+	log.Infof("Config dir: %s", dir)
 	createDir(dir)
+
 	return dir
 }
 
@@ -240,11 +242,17 @@ func getAppDirs() []string {
 		"/var/lib/flatpak/exports/share/applications"}
 
 	for _, d := range flatpakDirs {
-		if !isIn(dirs, d) {
+		if pathExists(d) && !isIn(dirs, d) {
 			dirs = append(dirs, d)
 		}
 	}
-	return dirs
+	var confirmedDirs []string
+	for _, d := range dirs {
+		if pathExists(d) {
+			confirmedDirs = append(confirmedDirs, d)
+		}
+	}
+	return confirmedDirs
 }
 
 func loadPreferredApps(path string) (map[string]interface{}, error) {
@@ -350,6 +358,7 @@ func setUpCategories() {
 }
 
 func parseDesktopFiles(desktopFiles []string) string {
+	desktopEntries = nil
 	id2entry = make(map[string]desktopEntry)
 	skipped := 0
 	hidden := 0
@@ -368,7 +377,7 @@ func parseDesktopFiles(desktopFiles []string) string {
 		if entry.NoDisplay {
 			hidden++
 			// We still need hidden entries, so `continue` is disallowed here
-			// Fixes introduced in #19
+			// Fixes bug introduced in #19
 		}
 
 		id2entry[entry.DesktopID] = entry
@@ -461,7 +470,7 @@ func loadTextFile(path string) ([]string, error) {
 	var output []string
 	for _, line := range lines {
 		line = strings.TrimSpace(line)
-		if line != "" {
+		if line != "" && !strings.HasPrefix(line, "#") {
 			output = append(output, line)
 		}
 
@@ -472,7 +481,7 @@ func loadTextFile(path string) ([]string, error) {
 func pinItem(itemID string) {
 	for _, item := range pinned {
 		if item == itemID {
-			log.Warn(item, "already pinned")
+			log.Warnf("%s already pinned", itemID)
 			return
 		}
 	}
@@ -563,12 +572,13 @@ func launch(command string, terminal bool) {
 	msg := fmt.Sprintf("env vars: %s; command: '%s'; args: %s\n", envVars, elements[cmdIdx], elements[1+cmdIdx:])
 	log.Info(msg)
 
-	go cmd.Run()
+	cmd.Start()
 
-	glib.TimeoutAdd(uint(150), func() bool {
+	if *resident {
+		restoreStateAndHide()
+	} else {
 		gtk.MainQuit()
-		return false
-	})
+	}
 }
 
 func open(filePath string, xdgOpen bool) {
@@ -586,10 +596,15 @@ func open(filePath string, xdgOpen bool) {
 	} else {
 		cmd = exec.Command(*fileManager, filePath)
 	}
-	fmt.Printf("Executing: %s", cmd)
+	log.Infof("Executing: %s", cmd)
+
 	cmd.Start()
 
-	gtk.MainQuit()
+	if *resident {
+		restoreStateAndHide()
+	} else {
+		gtk.MainQuit()
+	}
 }
 
 // Returns map output name -> gdk.Monitor

uicomponents.go

@@ -6,6 +6,8 @@ import (
 	"path/filepath"
 	"strings"
 
+	log "github.com/sirupsen/logrus"
+
 	"github.com/gotk3/gotk3/gdk"
 	"github.com/gotk3/gotk3/gtk"
 )
@@ -65,7 +67,6 @@ func setUpPinnedFlowBox() *gtk.FlowBox {
 					return true
 				} else if btnEvent.Button() == 3 {
 					unpinItem(entry.DesktopID)
-					pinnedFlowBox = setUpPinnedFlowBox()
 					return true
 				}
 				return false
@@ -85,10 +86,6 @@ func setUpPinnedFlowBox() *gtk.FlowBox {
 			item.(*gtk.Widget).SetCanFocus(false)
 		})
 	}
-	flowBox.Connect("enter-notify-event", func() {
-		cancelClose()
-	})
-
 	flowBox.ShowAll()
 
 	return flowBox
@@ -108,9 +105,7 @@ func setUpCategoriesButtonBox() *gtk.EventBox {
 	}
 
 	eventBox, _ := gtk.EventBoxNew()
-	eventBox.Connect("enter-notify-event", func() {
-		cancelClose()
-	})
+
 	hBox, _ := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 0)
 	eventBox.Add(hBox)
 	button, _ := gtk.ButtonNewWithLabel("All")
@@ -131,7 +126,6 @@ func setUpCategoriesButtonBox() *gtk.EventBox {
 			button.SetProperty("name", "category-button")
 			catButtons = append(catButtons, button)
 			button.SetLabel(cat.DisplayName)
-			// fix #8
 			button.SetAlwaysShowImage(true)
 			hBox.PackStart(button, false, false, 0)
 			name := cat.Name
@@ -233,13 +227,19 @@ func flowBoxButton(entry desktopEntry) *gtk.Button {
 	button, _ := gtk.ButtonNew()
 	button.SetAlwaysShowImage(true)
 
+	var pixbuf *gdk.Pixbuf
 	var img *gtk.Image
+	var err error
 	if entry.Icon != "" {
-		pixbuf, _ := createPixbuf(entry.Icon, *iconSize)
-		img, _ = gtk.ImageNewFromPixbuf(pixbuf)
+		pixbuf, err = createPixbuf(entry.Icon, *iconSize)
 	} else {
-		img, _ = gtk.ImageNewFromIconName("image-missing", gtk.ICON_SIZE_INVALID)
+		log.Warnf("Undefined icon for %s", entry.Name)
+		pixbuf, err = createPixbuf("image-missing", *iconSize)
 	}
+	if err != nil {
+		pixbuf, _ = createPixbuf("unknown", *iconSize)
+	}
+	img, _ = gtk.ImageNewFromPixbuf(pixbuf)
 
 	button.SetImage(img)
 	button.SetImagePosition(gtk.POS_TOP)
@@ -262,7 +262,6 @@ func flowBoxButton(entry desktopEntry) *gtk.Button {
 			return true
 		} else if btnEvent.Button() == 3 {
 			pinItem(ID)
-			pinnedFlowBox = setUpPinnedFlowBox()
 			return true
 		}
 		return false
@@ -282,9 +281,6 @@ func setUpFileSearchResultContainer() *gtk.FlowBox {
 	}
 	flowBox, _ := gtk.FlowBoxNew()
 	flowBox.SetProperty("orientation", gtk.ORIENTATION_VERTICAL)
-	flowBox.Connect("enter-notify-event", func() {
-		cancelClose()
-	})
 	fileSearchResultWrapper.PackStart(flowBox, false, false, 10)
 
 	return flowBox
@@ -296,7 +292,19 @@ func walk(path string, d fs.DirEntry, e error) error {
 	}
 	// don't search leading part of the path, as e.g. '/home/user/Pictures'
 	toSearch := strings.Split(path, ignore)[1]
-	if strings.Contains(strings.ToLower(toSearch), strings.ToLower(phrase)) {
+
+	// Remaing part of the path (w/o file name) must be checked against being present in excluded dirs
+	doSearch := true
+	parts := strings.Split(toSearch, "/")
+	remainingPart := ""
+	if len(parts) > 1 {
+		remainingPart = strings.Join(parts[:len(parts)-1], "/")
+	}
+	if remainingPart != "" && isExcluded(remainingPart) {
+		doSearch = false
+	}
+
+	if doSearch && strings.Contains(strings.ToLower(toSearch), strings.ToLower(phrase)) {
 		// mark directories
 		if d.IsDir() {
 			fileSearchResults = append(fileSearchResults, fmt.Sprintf("#is_dir#%s", path))
@@ -304,15 +312,16 @@ func walk(path string, d fs.DirEntry, e error) error {
 			fileSearchResults = append(fileSearchResults, path)
 		}
 	}
+
 	return nil
 }
 
 func setUpSearchEntry() *gtk.SearchEntry {
 	searchEntry, _ := gtk.SearchEntryNew()
 	searchEntry.SetPlaceholderText("Type to search")
-	searchEntry.Connect("enter-notify-event", func() {
+	/*searchEntry.Connect("enter-notify-event", func() {
 		cancelClose()
-	})
+	})*/
 	searchEntry.Connect("search-changed", func() {
 		for _, btn := range catButtons {
 			btn.SetImagePosition(gtk.POS_LEFT)
@@ -367,7 +376,6 @@ func setUpSearchEntry() *gtk.SearchEntry {
 			if w == nil && fileSearchResultFlowBox != nil {
 				f := fileSearchResultFlowBox.GetChildAtIndex(0)
 				if f != nil {
-					//f.SetCanFocus(false)
 					button, err := f.GetChild()
 					if err == nil {
 						button.ToWidget().SetCanFocus(true)
@@ -388,13 +396,19 @@ func setUpSearchEntry() *gtk.SearchEntry {
 			}
 		}
 	})
-	/*searchEntry.Connect("focus-in-event", func() {
-		searchEntry.SetText("")
-	})*/
 
 	return searchEntry
 }
 
+func isExcluded(dir string) bool {
+	for _, exclusion := range exclusions {
+		if strings.Contains(dir, exclusion) {
+			return true
+		}
+	}
+	return false
+}
+
 func searchUserDir(dir string) {
 	fileSearchResults = nil
 	ignore = userDirsMap[dir]
@@ -407,8 +421,11 @@ func searchUserDir(dir string) {
 		for _, path := range fileSearchResults {
 			partOfPathToShow := strings.Split(path, userDirsMap[dir])[1]
 			if partOfPathToShow != "" {
-				btn := setUpUserFileSearchResultButton(partOfPathToShow, path)
-				fileSearchResultFlowBox.Add(btn)
+				if !(strings.HasPrefix(path, "#is_dir#") && isExcluded(path)) {
+					btn := setUpUserFileSearchResultButton(partOfPathToShow, path)
+					fileSearchResultFlowBox.Add(btn)
+				}
+
 			}
 		}
 		fileSearchResultFlowBox.Hide()

watcher.go

@@ -0,0 +1,62 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/fsnotify/fsnotify"
+)
+
+// Thanks to Steve Domino https://medium.com/@skdomino/watch-this-file-watching-in-go-5b5a247cf71f
+var watcher *fsnotify.Watcher
+
+func watchFiles() {
+
+	// creates a new file watcher
+	watcher, _ = fsnotify.NewWatcher()
+	defer watcher.Close()
+
+	if err := watcher.Add(pinnedFile); err != nil {
+		log.Errorf("ERROR", err)
+	}
+
+	for _, fp := range appDirs {
+		if err := filepath.Walk(fp, watchDir); err != nil {
+			log.Errorf("ERROR", err)
+		}
+	}
+
+	done := make(chan bool)
+
+	go func() {
+		for {
+			select {
+			case event := <-watcher.Events:
+				if strings.HasSuffix(event.Name, ".desktop") &&
+					(event.Op.String() == "CREATE" ||
+						event.Op.String() == "REMOVE" ||
+						event.Op.String() == "RENAME") {
+					desktopTrigger = true
+				} else if event.Name == pinnedFile {
+					pinnedTrigger = true
+				}
+
+			case err := <-watcher.Errors:
+				log.Errorf("ERROR", err)
+			}
+		}
+	}()
+
+	<-done
+}
+
+func watchDir(path string, fi os.FileInfo, err error) error {
+	if fi.Mode().IsDir() {
+		return watcher.Add(path)
+	}
+
+	return nil
+}