feat: add suspend keybind (#751)

internal/app/app.go

@@ -102,6 +102,9 @@ func (a *App) quit() {
 
 func (a *App) onInputCapture(event *tcell.EventKey) *tcell.EventKey {
 	switch {
+	case keybind.Matches(event, a.cfg.Keybinds.Suspend.Keybind):
+		a.suspend()
+		return nil
 	case keybind.Matches(event, a.cfg.Keybinds.Quit.Keybind):
 		a.quit()
 		return nil

internal/app/suspend_default.go

@@ -0,0 +1,5 @@
+//go:build !unix
+
+package app
+
+func (a *App) suspend() {}

internal/app/suspend_unix.go

@@ -0,0 +1,20 @@
+//go:build unix
+
+package app
+
+import (
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func (a *App) suspend() {
+	a.inner.Suspend(func() {
+		c := make(chan os.Signal, 1)
+		signal.Notify(c, syscall.SIGCONT)
+		defer signal.Stop(c)
+
+		_ = syscall.Kill(0, syscall.SIGTSTP)
+		<-c
+	})
+}

internal/config/config.toml

@@ -87,10 +87,11 @@ focus_previous = "ctrl+h"
 focus_next = "ctrl+l"
 # Hide/show the guilds tree.
 toggle_guilds_tree = "ctrl+b"
-quit = "ctrl+c"
 # Log out and remove the authentication token from keyring.
 # Requires re-login upon restart.
 logout = "ctrl+d"
+suspend = "ctrl+z"
+quit = "ctrl+c"
 
 [keybinds.picker]
 toggle = "ctrl+k"
@@ -152,6 +153,7 @@ send = "enter"
 cancel = "esc"
 # Complete usernames when mentioning
 tab_complete = "tab"
+undo = "ctrl+u"
 
 open_editor = "ctrl+e"
 open_file_picker = "ctrl+\\"

internal/config/keybinds.go

@@ -96,6 +96,7 @@ type MessageInputKeybinds struct {
 	Send        Keybind `toml:"send"`
 	Cancel      Keybind `toml:"cancel"`
 	TabComplete Keybind `toml:"tab_complete"`
+	Undo        Keybind `toml:"undo"`
 
 	OpenEditor     Keybind `toml:"open_editor"`
 	OpenFilePicker Keybind `toml:"open_file_picker"`
@@ -109,6 +110,7 @@ type Keybinds struct {
 	ToggleGuildsTree     Keybind `toml:"toggle_guilds_tree"`
 	ToggleChannelsPicker Keybind `toml:"toggle_channels_picker"`
 	ToggleHelp           Keybind `toml:"toggle_help"`
+	Suspend              Keybind `toml:"suspend"`
 
 	FocusGuildsTree   Keybind `toml:"focus_guilds_tree"`
 	FocusMessagesList Keybind `toml:"focus_messages_list"`
@@ -132,6 +134,7 @@ func defaultKeybinds() Keybinds {
 		ToggleGuildsTree:     newKeybind("ctrl+b", "toggle guilds"),
 		ToggleChannelsPicker: newKeybind("ctrl+k", "channels picker"),
 		ToggleHelp:           newKeybind("ctrl+.", "help"),
+		Suspend:              newKeybind("ctrl+z", "suspend"),
 
 		FocusGuildsTree:   newKeybind("ctrl+g", "guilds"),
 		FocusMessagesList: newKeybind("ctrl+t", "messages"),
@@ -198,6 +201,7 @@ func defaultKeybinds() Keybinds {
 			Send:           newKeybind("enter", "send"),
 			Cancel:         newKeybind("esc", "cancel"),
 			TabComplete:    newKeybind("tab", "complete"),
+			Undo:           newKeybind("ctrl+u", "undo"),
 			OpenEditor:     newKeybind("ctrl+e", "editor"),
 			OpenFilePicker: newKeybind("ctrl+\\", "attach"),
 		},

internal/ui/chat/message_input.go

@@ -126,6 +126,8 @@ func (mi *messageInput) onInputCapture(event *tcell.EventKey) *tcell.EventKey {
 	case keybind.Matches(event, mi.cfg.Keybinds.MessageInput.TabComplete.Keybind):
 		go mi.chatView.app.QueueUpdateDraw(func() { mi.tabComplete() })
 		return nil
+	case keybind.Matches(event, mi.cfg.Keybinds.MessageInput.Undo.Keybind):
+		return tcell.NewEventKey(tcell.KeyCtrlZ, "", tcell.ModNone)
 	default:
 		if mi.cfg.TypingIndicator.Send && mi.typingTimer == nil {
 			mi.typingTimer = time.AfterFunc(typingDuration, func() {
@@ -717,7 +719,7 @@ func (mi *messageInput) FullHelp() [][]keybind.Keybind {
 	}
 
 	return [][]keybind.Keybind{
-		{cfg.Send.Keybind, cfg.Cancel.Keybind, cfg.TabComplete.Keybind},
+		{cfg.Send.Keybind, cfg.Cancel.Keybind, cfg.TabComplete.Keybind, cfg.Undo.Keybind},
 		openEditor,
 	}
 }