Add 'set-style' command

src/command.go

@@ -202,6 +202,52 @@ func initCommands() {
 		},
 	}
 
+	setStyleCmd := Command{
+		cmd: "set-style",
+		run: func(window *Window, args ...string) {
+			if len(args) >= 1 {
+				input := args[0]
+
+				if input == "" {
+					return
+				}
+
+				if _, ok := AvailableStyles[input]; !ok {
+					PrintMessage(window, fmt.Sprintf("Could not set style to '%s'", input))
+					return
+				}
+
+				if ok := SetCurrentStyle(window.screen, input); ok {
+					PrintMessage(window, fmt.Sprintf("Setting style to '%s'", input))
+				} else {
+					PrintMessage(window, fmt.Sprintf("Could not set style to '%s'", input))
+				}
+
+				return
+			}
+
+			inputChannel := RequestInput(window, "Style to switch to:", "")
+			go func() {
+				input := <-inputChannel
+
+				if input == "" {
+					return
+				}
+
+				if _, ok := AvailableStyles[input]; !ok {
+					PrintMessage(window, fmt.Sprintf("Could not set style to '%s'", input))
+					return
+				}
+
+				if ok := SetCurrentStyle(window.screen, input); ok {
+					PrintMessage(window, fmt.Sprintf("Setting style to '%s'", input))
+				} else {
+					PrintMessage(window, fmt.Sprintf("Could not set style to '%s'", input))
+				}
+			}()
+		},
+	}
+
 	menuFileCmd := Command{
 		cmd: "menu-file",
 		run: func(window *Window, args ...string) {
@@ -297,6 +343,7 @@ func initCommands() {
 	commands["next-buffer"] = &nextBufferCmd
 	commands["new-buffer"] = &newBufferCmd
 	commands["close-buffer"] = &closeBufferCmd
+	commands["set-style"] = &setStyleCmd
 	commands["menu-file"] = &menuFileCmd
 	commands["menu-edit"] = &menuEditCmd
 	commands["menu-buffers"] = &menuBuffersCmd

src/style.go

@@ -46,8 +46,29 @@ type typerStyleYaml struct {
 	Colors map[string]string `yaml:"colors"`
 }
 
+var FallbackStyle = TyperStyle{
+	Name:        "fallback",
+	Description: "Fallback style",
+	StyleType:   "8-color",
+
+	BufferAreaBg:  tcell.ColorBlack,
+	BufferAreaFg:  tcell.ColorWhite,
+	BufferAreaSel: tcell.ColorNavy,
+	TopMenuBg:     tcell.ColorWhite,
+	TopMenuFg:     tcell.ColorBlack,
+	DropdownBg:    tcell.ColorWhite,
+	DropdownFg:    tcell.ColorBlack,
+	DropdownSel:   tcell.ColorNavy,
+	LineIndexBg:   tcell.ColorWhite,
+	LineIndexFg:   tcell.ColorBlack,
+	MessageBarBg:  tcell.ColorWhite,
+	MessageBarFg:  tcell.ColorBlack,
+	InputBarBg:    tcell.ColorWhite,
+	InputBarFg:    tcell.ColorBlack,
+}
+
 var AvailableStyles = make(map[string]TyperStyle)
-var CurrentStyle TyperStyle
+var CurrentStyle = FallbackStyle
 
 func readStyles() {
 	homeDir, err := os.UserHomeDir()
@@ -145,7 +166,7 @@ func readStyleYamlFile(filepath string) (TyperStyle, error) {
 	return style, nil
 }
 
-func SetCurrentStyle(screen tcell.Screen) {
+func SetCurrentStyle(screen tcell.Screen, styleName string) bool {
 	availableTypes := make([]string, 1)
 	availableTypes[0] = "8-color"
 	if screen.Colors() >= 16 {
@@ -158,30 +179,13 @@ func SetCurrentStyle(screen tcell.Screen) {
 		availableTypes = append(availableTypes, "true-color")
 	}
 
-	if style, ok := AvailableStyles[Config.SelectedStyle]; ok && slices.Index(availableTypes, style.StyleType) != -1 {
+	if style, ok := AvailableStyles[styleName]; ok && slices.Index(availableTypes, style.StyleType) != -1 {
 		CurrentStyle = style
-	} else if style, ok := AvailableStyles[Config.FallbackStyle]; ok {
-		CurrentStyle = style
-	} else {
-		CurrentStyle = TyperStyle{
-			Name:        "fallback",
-			Description: "Fallback style",
-			StyleType:   "8-color",
 
-			BufferAreaBg:  tcell.ColorBlack,
-			BufferAreaFg:  tcell.ColorWhite,
-			BufferAreaSel: tcell.ColorNavy,
-			TopMenuBg:     tcell.ColorWhite,
-			TopMenuFg:     tcell.ColorBlack,
-			DropdownBg:    tcell.ColorWhite,
-			DropdownFg:    tcell.ColorBlack,
-			DropdownSel:   tcell.ColorNavy,
-			LineIndexBg:   tcell.ColorWhite,
-			LineIndexFg:   tcell.ColorBlack,
-			MessageBarBg:  tcell.ColorWhite,
-			MessageBarFg:  tcell.ColorBlack,
-			InputBarBg:    tcell.ColorWhite,
-			InputBarFg:    tcell.ColorBlack,
-		}
+		screen.SetStyle(tcell.StyleDefault.Foreground(CurrentStyle.BufferAreaFg).Background(CurrentStyle.BufferAreaBg))
+		screen.Sync()
+
+		return true
 	}
+	return false
 }

src/window.go

@@ -72,16 +72,22 @@ func CreateWindow() (*Window, error) {
 		log.Fatalf("Failed to initialize screen: %s", err)
 	}
 
-	// Set screen style
-	SetCurrentStyle(screen)
-	screen.SetStyle(tcell.StyleDefault.Foreground(CurrentStyle.BufferAreaFg).Background(CurrentStyle.BufferAreaBg))
-
 	// Enable mouse
 	screen.EnableMouse()
 
 	// Set window screen field
 	window.screen = screen
 
+	// Try to set screen style to selected one
+	if ok := SetCurrentStyle(screen, Config.SelectedStyle); !ok {
+		// Try to set screen style to selected fallback one
+		if ok := SetCurrentStyle(screen, Config.FallbackStyle); !ok {
+			// Use hard-coded fallback style
+			screen.SetStyle(tcell.StyleDefault.Foreground(CurrentStyle.BufferAreaFg).Background(CurrentStyle.BufferAreaBg))
+			PrintMessage(&window, "Could not set style either to selected one nor to fallback one!")
+		}
+	}
+
 	// Initialize top menu
 	initTopMenu()