func cursorRight(g *gocui.Gui, v *gocui.View) error {
if v != nil {
cx, cy := v.Cursor()
if err := v.SetCursor(cx+1, cy); err != nil {
ox, oy := v.Origin()
if err := v.SetOrigin(ox+1, oy); err != nil {
return err
}
}
}
return nil
}
func cursorUp(g *gocui.Gui, v *gocui.View) error {
if v != nil {
ox, oy := v.Origin()
cx, cy := v.Cursor()
if err := v.SetCursor(cx, cy-1); err != nil && oy > 0 {
if err := v.SetOrigin(ox, oy-1); err != nil {
return err
}
}
}
return nil
}
func cursorLeft(g *gocui.Gui, v *gocui.View) error {
if v != nil {
ox, oy := v.Origin()
cx, cy := v.Cursor()
if err := v.SetCursor(cx-1, cy); err != nil && ox > 0 {
if err := v.SetOrigin(ox-1, oy); err != nil {
return err
}
}
}
return nil
}
func cursorDown(g *gocui.Gui, v *gocui.View) error {
if v != nil {
cx, cy := v.Cursor()
if err := v.SetCursor(cx, cy+1); err != nil {
ox, oy := v.Origin()
if err := v.SetOrigin(ox, oy+1); err != nil {
return err
}
}
}
return nil
}
func getLine(g *gocui.Gui, v *gocui.View) error {
var l string
var err error
_, cy := v.Cursor()
if l, err = v.Line(cy); err != nil {
l = ""
}
maxX, maxY := g.Size()
if v, err := g.SetView("msg", maxX/2-30, maxY/2, maxX/2+30, maxY/2+2); err != nil {
if err != gocui.ErrorUnkView {
return err
}
fmt.Fprintln(v, l)
if err := g.SetCurrentView("msg"); err != nil {
return err
}
}
return nil
}