paginator and styles

examples/main.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"github.com/orus-dev/osui"
+	"github.com/orus-dev/osui/styles"
+	"github.com/orus-dev/osui/ui"
+)
+
+func main() {
+	colors := ui.Text(
+		styles.Red + "Red!\n" + styles.Green + "Green!\n" + styles.Blue + "Blue!\n",
+	)
+	input := ui.InputBox(30)
+	paginator := ui.Paginator(colors, input)
+	paginator.UpdatePages[1] = input.Update
+	screen := osui.NewScreen(paginator)
+	screen.Render()
+	paginator.Run()
+}

osui.go

@@ -20,6 +20,8 @@ type Component interface {
 
 type Screen struct {
 	components []Component
+	Width      int
+	Height     int
 }
 
 func NewScreen(c ...Component) *Screen {
@@ -38,13 +40,12 @@ func NewScreen(c ...Component) *Screen {
 func (s *Screen) Render() error {
 	Clear()
 	width, height, err := term.GetSize(0)
+	s.Width = width
+	s.Height = height
 	if err != nil {
 		return fmt.Errorf("error getting the terminal size: %s", err)
 	}
-	frame := make([]string, height)
+	frame := NewFrame(width, height)
-	for i := 0; i < height; i++ {
-		frame[i] = strings.Repeat(" ", width)
-	}
 	for _, component := range s.components {
 		RenderOnFrame(component, &frame)
 	}

styles/styles.go

@@ -0,0 +1,36 @@
+package styles
+
+import "fmt"
+
+const (
+	Reset     = "\033[0m"
+	Bold      = "\033[1m"
+	Underline = "\033[4m"
+	Italic    = "\033[3m"
+	Reverse   = "\033[7m"
+	Strike    = "\033[9m"
+
+	// Font Colors
+	Black   = "\033[30m"
+	Red     = "\033[31m"
+	Green   = "\033[32m"
+	Yellow  = "\033[33m"
+	Blue    = "\033[34m"
+	Magenta = "\033[35m"
+	Cyan    = "\033[36m"
+	White   = "\033[37m"
+
+	// Background Colors
+	BgBlack   = "\033[40m"
+	BgRed     = "\033[41m"
+	BgGreen   = "\033[42m"
+	BgYellow  = "\033[43m"
+	BgBlue    = "\033[44m"
+	BgMagenta = "\033[45m"
+	BgCyan    = "\033[46m"
+	BgWhite   = "\033[47m"
+)
+
+func Rgb(r, g, b uint8) string {
+	return fmt.Sprintf("\x1b[38;2;%d;%d;%dm", r, g, b)
+}

ui/inputBox.go

@@ -7,21 +7,9 @@ import (
 	"github.com/orus-dev/osui"
 )
 
-type TextComponent struct {
-	Data osui.ComponentData
-	Text string
-}
-
-func (t *TextComponent) GetComponentData() *osui.ComponentData {
-	return &t.Data
-}
-
-func (t TextComponent) Render() string {
-	return t.Text
-}
-
 type InputBoxComponent struct {
 	Data      osui.ComponentData
+	cursor    string
 	max_size  uint
 	InputData string
 }
@@ -32,39 +20,52 @@ func (s *InputBoxComponent) GetComponentData() *osui.ComponentData {
 
 func (s InputBoxComponent) Render() string {
 	return fmt.Sprintf(
-		" %s\n|%s%s|\n %s",
+		" %s\n|%s%s|\n %s%s",
 		strings.Repeat("_", int(s.max_size)),
 		s.InputData,
 		strings.Repeat(" ", int(s.max_size)-len(s.InputData)),
 		strings.Repeat("‾", int(s.max_size)),
+		s.cursor,
 	)
 }
 
 func (s *InputBoxComponent) Read() error {
 	for {
-		fmt.Printf("\x1B[%d;%dH", s.Data.Y+2, int(s.Data.X+2)+len(s.InputData))
 		key, err := osui.ReadKey()
 		if err != nil {
 			fmt.Print("\n\n")
 			fmt.Println(err)
 			break
 		}
-		switch key {
+		if s.Update(key) {
-		case osui.Key.Enter:
 			fmt.Print("\n\n")
 			return nil
-
-		case osui.Key.Backspace:
-			if len(s.InputData) > 0 {
-				s.InputData = s.InputData[:len(s.InputData)-1]
-			}
-
-		default:
-			if int(s.max_size) > len(s.InputData) {
-				s.InputData += key
-			}
 		}
-		s.Data.Screen.Render()
 	}
 	return nil
 }
+
+func (s *InputBoxComponent) Update(key string) bool {
+	// s.cursor = fmt.Sprintf("\x1B[%d;%dH", s.Data.Y+2, int(s.Data.X+2)+len(s.InputData))
+	// s.Render()
+	switch key {
+	case osui.Key.Enter:
+		return true
+
+	case osui.Key.Backspace:
+		if len(s.InputData) > 0 {
+			s.InputData = s.InputData[:len(s.InputData)-1]
+		}
+
+	default:
+		if int(s.max_size) > len(s.InputData) {
+			s.InputData += key
+		}
+	}
+	s.Data.Screen.Render()
+	return false
+}
+
+func InputBox(max_size uint) *InputBoxComponent {
+	return &InputBoxComponent{max_size: max_size}
+}

ui/paginator.go

@@ -0,0 +1,83 @@
+package ui
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/orus-dev/osui"
+	"github.com/orus-dev/osui/styles"
+)
+
+type PaginatorStyle struct {
+	Active string `default:"\033[32m"`
+}
+
+type PaginatorComponent struct {
+	Data        osui.ComponentData
+	Style       *PaginatorStyle
+	Pages       []osui.Component
+	UpdatePages map[int]func(string) bool
+	ActivePage  int
+}
+
+func (p *PaginatorComponent) GetComponentData() *osui.ComponentData {
+	return &p.Data
+}
+
+func (p PaginatorComponent) Render() string {
+	pgs := strings.Repeat(" ", p.Data.Screen.Width/2)
+	for page := range p.Pages {
+		if page == p.ActivePage {
+			pgs += p.Style.Active + "•" + styles.Reset
+		} else {
+			pgs += styles.Reset + "•"
+		}
+	}
+	frame := osui.NewFrame(p.Data.Screen.Width, p.Data.Screen.Height-3)
+	osui.RenderOnFrame(p.Pages[p.ActivePage], &frame)
+	return fmt.Sprintf("%s\n%s", pgs, styles.Reset+strings.Join(frame, "\n"))
+}
+
+func (p *PaginatorComponent) Run() {
+	for _, c := range p.Pages {
+		d := c.GetComponentData()
+		if d.Screen == nil {
+			d.Screen = p.Data.Screen
+		}
+	}
+	for {
+		key, _ := osui.ReadKey()
+		switch key {
+		case "\x1b[Z":
+			if p.ActivePage > 0 {
+				p.ActivePage--
+			} else {
+				p.ActivePage = len(p.Pages) - 1
+			}
+		case osui.Key.Tab:
+			if p.ActivePage < len(p.Pages)-1 {
+				p.ActivePage++
+			} else {
+				p.ActivePage = 0
+			}
+		case osui.Key.Escape:
+			fmt.Print("\n\n")
+			return
+		default:
+			for i, c := range p.UpdatePages {
+				if i == p.ActivePage {
+					c(key)
+				}
+			}
+		}
+		p.Data.Screen.Render()
+	}
+}
+
+func Paginator(pages ...osui.Component) *PaginatorComponent {
+	return &PaginatorComponent{
+		Pages:       pages,
+		Style:       osui.SetDefaults(&PaginatorStyle{}).(*PaginatorStyle),
+		UpdatePages: make(map[int]func(string) bool),
+	}
+}

ui/text.go

@@ -0,0 +1,22 @@
+package ui
+
+import (
+	"github.com/orus-dev/osui"
+)
+
+type TextComponent struct {
+	Data osui.ComponentData
+	Text string
+}
+
+func (t *TextComponent) GetComponentData() *osui.ComponentData {
+	return &t.Data
+}
+
+func (t TextComponent) Render() string {
+	return t.Text
+}
+
+func Text(text string) *TextComponent {
+	return &TextComponent{Text: text}
+}

ui/ui.go

@@ -1,9 +0,0 @@
-package ui
-
-func Text(text string) *TextComponent {
-	return &TextComponent{Text: text}
-}
-
-func InputBox(max_size uint) *InputBoxComponent {
-	return &InputBoxComponent{max_size: max_size}
-}

utils.go

@@ -1,8 +1,11 @@
 package osui
 
 import (
-	"fmt"
 	"os"
+	"os/exec"
+	"reflect"
+	"regexp"
+	"runtime"
 	"strings"
 
 	"golang.org/x/term"
@@ -27,13 +30,36 @@ func renderLine(frameLine, line string, x int) string {
 
 func RenderOnFrame(c Component, frame *[]string) {
 	componentData := c.GetComponentData()
-	for i, line := range strings.Split(c.Render(), "\n") {
+	for i, lo := range strings.Split(c.Render(), "\n") {
 		if int(componentData.Y)+i < len(*frame) {
-			(*frame)[int(componentData.Y)+i] = renderLine((*frame)[int(componentData.Y)+i], line, int(componentData.X))
+			fo := (*frame)[int(componentData.Y)+i]
+			f, fa := CompressString(fo, "\b")
+			line, la := CompressString(lo, "\t")
+			r := renderLine(f, line, int(componentData.X))
+			(*frame)[int(componentData.Y)+i] = DecompressString(DecompressString(r, la, "\t"), fa, "\b")
 		}
 	}
 }
 
+func CompressString(input, repl string) (string, []string) {
+	pattern := `\x1b\[([0-9;]*)m`
+	re := regexp.MustCompile(pattern)
+	matches := re.FindAllString(input, -1)
+	return re.ReplaceAllString(input, repl), matches
+}
+
+func DecompressString(modified string, outputArray []string, c string) string {
+	parts := strings.Split(modified, c)
+	reconstructed := ""
+	for i, part := range parts {
+		reconstructed += part
+		if i < len(outputArray) {
+			reconstructed += outputArray[i]
+		}
+	}
+	return reconstructed
+}
+
 func ReadKey() (string, error) {
 	oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
 	if err != nil {
@@ -48,8 +74,47 @@ func ReadKey() (string, error) {
 	return string(b[:n]), nil
 }
 
+func NewFrame(width, height int) []string {
+	frame := make([]string, height)
+	for i := 0; i < height; i++ {
+		frame[i] = strings.Repeat(" ", width)
+	}
+	return frame
+}
+
 func Clear() {
-	fmt.Print("\x1b[H\x1b[2J\x1b[3J")
+	switch runtime.GOOS {
+	case "windows":
+		cmd := exec.Command("cmd", "/c", "cls")
+		cmd.Stdout = os.Stdout
+		cmd.Run()
+	default:
+		cmd := exec.Command("clear")
+		cmd.Stdout = os.Stdout
+		cmd.Run()
+	}
+}
+
+func SetDefaults(p interface{}) interface{} {
+	v := reflect.ValueOf(p)
+	if v.Kind() != reflect.Ptr {
+		panic("setDefaults: expected a pointer to a struct")
+	}
+	val := v.Elem()
+	if val.Kind() != reflect.Struct {
+		panic("setDefaults: expected a pointer to a struct")
+	}
+	typ := val.Type()
+	for i := 0; i < val.NumField(); i++ {
+		field := val.Field(i)
+		structField := typ.Field(i)
+		if defaultValue, ok := structField.Tag.Lookup("default"); ok {
+			if field.Kind() == reflect.String && field.String() == "" {
+				field.SetString(defaultValue)
+			}
+		}
+	}
+	return p
 }
 
 type Key_ = string