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package main
import (
"log"
"github.com/awesome-gocui/gocui"
)
// layout generates the view
func layout(g *gocui.Gui) error {
maxX, maxY := g.Size()
if v, err := g.SetView("hello", maxX/2-7, maxY/2, maxX/2+7, maxY/2+2, 0); err != nil {
if !gocui.IsUnknownView(err) {
return err
}
v.Write([]byte("Hello"))
if _, err := g.SetCurrentView("hello"); err != nil {
return err
}
}
return nil
}
// quit stops the gui
func quit(_ *gocui.Gui, _ *gocui.View) error {
return gocui.ErrQuit
}
func main() {
// Create a gui
g, err := gocui.NewGui(gocui.OutputNormal, false)
if err != nil {
log.Panicln(err)
}
defer g.Close()
// Add a manager function
g.SetManagerFunc(layout)
// This will set up the recovery for MustParse
defer func() {
if r := recover(); r != nil {
log.Panicln("Error caught: ", r)
}
}()
// The MustParse can panic, but only returns 2 values instead of 3
keyForced, modForced := gocui.MustParse("q")
if err := g.SetKeybinding("", keyForced, modForced, quit); err != nil {
log.Panicln(err)
}
// We can blacklist a keybinding.
// This allows us to prevent setting the keybinding.
if err := g.BlacklistKeybinding(gocui.KeyCtrlC); err != nil {
log.Panic(err)
}
// If for some reason you want to whitelist the keybinding,
// you can allow it again by calling g.WhitelistKeybinding.
if err := g.WhitelistKeybinding(gocui.KeyCtrlC); err != nil {
log.Panic(err)
}
// The normal parse returns an key, a modifier and an error
keyNormal, modNormal, err := gocui.Parse("Ctrl+C")
if err != nil {
log.Panicln(err)
}
if err = g.SetKeybinding("", keyNormal, modNormal, quit); err != nil {
log.Panicln(err)
}
// You can still block it when it is set, just blacklist it again, this will not throw
// an error at parsing, since it is already parsed above,
// but it will prevent it from being executed
//if err := g.BlacklistKeybinding(gocui.KeyCtrlC); err != nil {
// log.Panicln(err)
//}
// Now just start a mainloop for the demo
if err = g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Panicln(err)
}
}
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