98 lines
2.4 KiB
Go
98 lines
2.4 KiB
Go
package main
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import (
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"github.com/gotk3/gotk3/gtk"
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"log"
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"math/rand"
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"strconv"
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"time"
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)
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func validateInput(window *gtk.Window, str1, str2 string) bool {
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n, err := strconv.ParseFloat(str2, 64)
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if len(str1) == 0 || err != nil || n != 75000 {
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dialog := gtk.MessageDialogNew(
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window,
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gtk.DIALOG_MODAL,
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gtk.MESSAGE_ERROR,
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gtk.BUTTONS_OK,
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"Invalid input",
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)
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dialog.Run()
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dialog.Destroy()
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return false
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}
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return true
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}
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func check(err error, msg string) {
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if err != nil {
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log.Fatal(msg, err)
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}
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}
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func main() {
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rand.Seed(time.Now().UnixNano())
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gtk.Init(nil)
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window, err := gtk.WindowNew(gtk.WINDOW_TOPLEVEL)
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check(err, "Unable to create window:")
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window.SetTitle("Rosetta Code")
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window.SetPosition(gtk.WIN_POS_CENTER)
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window.Connect("destroy", func() {
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gtk.MainQuit()
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})
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vbox, err := gtk.BoxNew(gtk.ORIENTATION_VERTICAL, 1)
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check(err, "Unable to create vertical box:")
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vbox.SetBorderWidth(1)
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hbox1, err := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 1)
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check(err, "Unable to create first horizontal box:")
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hbox2, err := gtk.BoxNew(gtk.ORIENTATION_HORIZONTAL, 1)
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check(err, "Unable to create second horizontal box:")
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label, err := gtk.LabelNew("Enter a string and the number 75000 \n")
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check(err, "Unable to create label:")
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sel, err := gtk.LabelNew("String: ")
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check(err, "Unable to create string entry label:")
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nel, err := gtk.LabelNew("Number: ")
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check(err, "Unable to create number entry label:")
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se, err := gtk.EntryNew()
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check(err, "Unable to create string entry:")
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ne, err := gtk.EntryNew()
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check(err, "Unable to create number entry:")
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hbox1.PackStart(sel, false, false, 2)
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hbox1.PackStart(se, false, false, 2)
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hbox2.PackStart(nel, false, false, 2)
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hbox2.PackStart(ne, false, false, 2)
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// button to accept
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ab, err := gtk.ButtonNewWithLabel("Accept")
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check(err, "Unable to create accept button:")
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ab.Connect("clicked", func() {
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// read and validate the entered values
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str1, _ := se.GetText()
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str2, _ := ne.GetText()
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if validateInput(window, str1, str2) {
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window.Destroy() // close window if input is OK
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}
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})
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vbox.Add(label)
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vbox.Add(hbox1)
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vbox.Add(hbox2)
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vbox.Add(ab)
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window.Add(vbox)
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window.ShowAll()
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gtk.Main()
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}
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