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package termui
import (
"fmt"
"github.com/jroimartin/gocui"
"strings"
)
const errorPopupView = "errorPopupView"
type errorPopup struct {
message string
}
func newErrorPopup() *errorPopup {
return &errorPopup{
message: "",
}
}
func (ep *errorPopup) keybindings(g *gocui.Gui) error {
if err := g.SetKeybinding(errorPopupView, gocui.KeySpace, gocui.ModNone, ep.close); err != nil {
return err
}
if err := g.SetKeybinding(errorPopupView, gocui.KeyEnter, gocui.ModNone, ep.close); err != nil {
return err
}
return nil
}
func (ep *errorPopup) layout(g *gocui.Gui) error {
if ep.message == "" {
return nil
}
maxX, maxY := g.Size()
width := minInt(30, maxX)
wrapped, nblines := word_wrap(ep.message, width-2)
height := minInt(nblines+2, maxY)
x0 := (maxX - width) / 2
y0 := (maxY - height) / 2
v, err := g.SetView(errorPopupView, x0, y0, x0+width, y0+height)
if err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Frame = true
v.Title = "Error"
fmt.Fprintf(v, wrapped)
}
if _, err := g.SetCurrentView(errorPopupView); err != nil {
return err
}
return nil
}
func (ep *errorPopup) close(g *gocui.Gui, v *gocui.View) error {
ep.message = ""
return g.DeleteView(errorPopupView)
}
func (ep *errorPopup) activate(message string) {
ep.message = message
}
func word_wrap(text string, lineWidth int) (string, int) {
words := strings.Fields(strings.TrimSpace(text))
if len(words) == 0 {
return text, 1
}
lines := 1
wrapped := words[0]
spaceLeft := lineWidth - len(wrapped)
for _, word := range words[1:] {
if len(word)+1 > spaceLeft {
wrapped += "\n" + word
spaceLeft = lineWidth - len(word)
lines++
} else {
wrapped += " " + word
spaceLeft -= 1 + len(word)
}
}
return wrapped, lines
}
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