Initial Commit

viewhelper.go

@@ -0,0 +1,112 @@
+package goback
+
+import (
+	"fmt"
+	"github.com/jroimartin/gocui"
+	"strings"
+)
+
+/* Returns s centered across w characters */
+func CenterText(s string, w int, p string) string {
+	s_w := len(s)
+	repeated := ""
+	if (w-s_w)/2 > 0 {
+		repeated = strings.Repeat(p, (w-s_w)/2)
+	}
+	return repeated + s + repeated
+}
+
+/* Print a Label
+ *	s - contents
+ *	x - x position
+ *	y - y position
+ *	w - width
+ *	h - height
+ */
+func PrintLabel(s string, x int, y int, w int, h int, g *gocui.Gui, name string) error {
+	v, err := g.SetView(name, x, y, x+w, y+h)
+	if err != nil {
+		if err != gocui.ErrorUnkView {
+			return err
+		}
+		v.Frame = false
+		fmt.Fprintln(v, s)
+	}
+	return nil
+}
+
+/* Print a Framed Label
+ *	s - contents
+ *	x - x position
+ *	y - y position
+ *	w - width
+ *	h - height
+ */
+func PrintFramedLabel(s string, x int, y int, w int, h int, g *gocui.Gui, name string) error {
+	if v, err := g.SetView(name, x, y, x+w, y+h); err != nil {
+		if err != gocui.ErrorUnkView {
+			return err
+		}
+		fmt.Fprintln(v, s)
+	}
+	return nil
+}
+
+func PrintButton(title string, x int, y int, w int, h int, g *gocui.Gui, name string) error {
+	if v, err := g.SetView(name, x, y, x+w, y+h); err != nil {
+		if err != gocui.ErrorUnkView {
+			return err
+		}
+		v.Highlight = true
+		fmt.Fprintln(v, " "+CenterText(title, (w-2), " ")+" ")
+	}
+	return nil
+}
+
+func PrintMenu(title string, x int, y int, w int, h int, options []string, g *gocui.Gui, name string) error {
+	if title != "" {
+		if v_title, err := g.SetView(name+"-menu-title", x, y, x+w, y+2); err != nil {
+			if err != gocui.ErrorUnkView {
+				return err
+			}
+			fmt.Fprintln(v_title, title)
+		}
+	}
+	if v_menu, err := g.SetView(name, x, y+2, x+w, y+h-2); err != nil {
+		if err != gocui.ErrorUnkView {
+			return err
+		}
+		v_menu.Highlight = true
+		for _, m_opt := range options {
+			fmt.Fprintln(v_menu, CenterText(m_opt, w, " "))
+		}
+	}
+	return nil
+}
+
+func GetLine(g *gocui.Gui, v *gocui.View) (string, error) {
+	var l string
+	var err error
+	_, cy := v.Cursor()
+	if l, err = v.Line(cy); err != nil {
+		l = ""
+	}
+	return l, err
+}
+
+/* Modal Types */
+/*
+const (
+	ModalAlert   = iota // Just a popup
+	ModalConfirm        // Ok/Cancel Popup
+	ModalPrompt         // Prompt for Text Popup
+)
+
+type ModalButton struct {
+	label  string // What is displayed on this button
+	action func() // The function that gets called when 'enter' is pressed
+}
+
+func PrintModal(title string, contents string, x int, y int, w int, h int, modalType int, g *gocui.Gui, name string) error {
+}
+*/