add Destroy room button, show error notification on presence error and show disabled lambda icon when not focused on any chat

main.go

@@ -11,6 +11,7 @@ import (
 	"github.com/diamondburned/gotk4/pkg/gio/v2"
 	"github.com/diamondburned/gotk4/pkg/glib/v2"
 	"github.com/diamondburned/gotk4/pkg/gtk/v4"
+	"github.com/gen2brain/beeep"
 	"path/filepath"
 
 	"github.com/BurntSushi/toml"
@@ -29,7 +30,7 @@ import (
 
 var loadedConfig lambdaConfig
 
-var empty_dialog *gtk.Label
+var empty_dialog *gtk.Image
 
 // var msgs *gtk.ListBox
 var content *gtk.Widgetter
@@ -89,6 +90,15 @@ var cancelB64 string = base64.StdEncoding.EncodeToString(cancelBytes)
 var tagBytes []byte
 var tagB64 string = base64.StdEncoding.EncodeToString(tagBytes)
 
+
+//go:embed assets/lambda-disabled.png
+var logoDisabledBytes []byte
+var logoDisabledB64 string = base64.StdEncoding.EncodeToString(logoDisabledBytes)
+
+//go:embed assets/group.png
+var groupBytes []byte
+var groupB64 string = base64.StdEncoding.EncodeToString(groupBytes)
+
 var clientAssets map[string]gdk.Paintabler = make(map[string]gdk.Paintabler)
 var lockedJIDs map[string]bool = make(map[string]bool)
 
@@ -165,6 +175,23 @@ func init() {
 	loader.Close()
 
 	clientAssets["outcast"] = gdk.NewTextureForPixbuf(loader.Pixbuf())
+
+
+	loader = gdkpixbuf.NewPixbufLoader()
+
+	disabledLogoData, _ := base64.StdEncoding.DecodeString(logoDisabledB64)
+	loader.Write(disabledLogoData)
+	loader.Close()
+
+	clientAssets["disabled_logo"] = gdk.NewTextureForPixbuf(loader.Pixbuf())
+
+	loader = gdkpixbuf.NewPixbufLoader()
+
+	groupData, _ := base64.StdEncoding.DecodeString(groupB64)
+	loader.Write(groupData)
+	loader.Close()
+
+	clientAssets["group"] = gdk.NewTextureForPixbuf(loader.Pixbuf())
 }
 
 func main() {
@@ -307,7 +334,8 @@ func main() {
 			return
 		}
 
-		if presence.Error != *new(stanza.Err) {
+		if presence.Error.Reason != "" {
+			beeep.Notify(fmt.Sprintf("%s : %s", presence.From, presence.Error.Reason), presence.Error.Text, cancelBytes)
 			return
 		}
 
@@ -468,6 +496,7 @@ func activate(app *gtk.Application) {
 	fileMenu := gio.NewMenu()
 	fileMenu.Append("Join MUC", "app.join")
 	fileMenu.Append("Start DM", "app.dm")
+	fileMenu.Append("Destroy MUC", "app.destroymuc")
 
 	helpMenu := gio.NewMenu()
 	helpMenu.Append("About", "app.about")
@@ -478,6 +507,28 @@ func activate(app *gtk.Application) {
 		a.SetVisible(true)
 	})
 
+	destroymucAction := gio.NewSimpleAction("destroymuc", nil)
+	destroymucAction.ConnectActivate(func(p *glib.Variant) {
+		cur, ok  := tabs.Load(current) 
+		if ok {
+			cur := cur.(*chatTab)
+			if cur.isMuc {
+				client.SendRaw(fmt.Sprintf(`
+				<iq from='%s'
+				id='begone'
+				to='%s'
+				type='set'>
+				<query xmlns='http://jabber.org/protocol/muc#owner'>
+				<destroy jid='%s'>
+				<reason>User requested</reason>
+				</destroy>
+				</query>
+				</iq>
+				`, clientroot.Session.BindJid, current, JidMustParse(clientroot.Session.BindJid).Bare()))
+			}
+		}
+	})
+
 	joinAction := gio.NewSimpleAction("join", nil)
 	joinAction.ConnectActivate(func(p *glib.Variant) {
 		box := gtk.NewBox(gtk.OrientationVertical, 0)
@@ -540,6 +591,7 @@ func activate(app *gtk.Application) {
 
 	app.AddAction(joinAction)
 	app.AddAction(aboutAction)
+	app.AddAction(destroymucAction)
 
 	the_menu.AppendSubmenu("File", fileMenu)
 	the_menu.AppendSubmenu("Help", helpMenu)
@@ -552,7 +604,8 @@ func activate(app *gtk.Application) {
 	window.Window.SetDefaultSize(500, 500)
 	menu = gtk.NewBox(gtk.OrientationVertical, 0)
 
-	empty_dialog = gtk.NewLabel("You are not focused on any chats.")
+	empty_dialog = gtk.NewImageFromPaintable(clientAssets["disabled_logo"])
+	empty_dialog.SetPixelSize(100)
 	empty_dialog.SetVExpand(true)
 
 	scroller = gtk.NewScrolledWindow()