func main() {
// Create GUI server
//server := gwu.NewServer("guitest", "")
server := gwu.NewServerTLS("guitest", "", "test_tls/cert.pem", "test_tls/key.pem")
server.SetText("Test GUI Application")
server.AddSessCreatorName("login", "Login Window")
server.AddSHandler(SessHandler{})
win := gwu.NewWindow("home", "Home Window")
l := gwu.NewLabel("Home, sweet home of " + server.Text())
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetFontSize("130%")
win.Add(l)
win.Add(gwu.NewLabel("Click on the button to login:"******"Login")
b.AddEHandlerFunc(func(e gwu.Event) {
e.ReloadWin("login")
}, gwu.ETYPE_CLICK)
win.Add(b)
server.AddWin(win)
server.SetLogger(log.New(os.Stdout, "", log.LstdFlags))
// Start GUI server
if err := server.Start(); err != nil {
fmt.Println("Error: Cound not start GUI server:", err)
return
}
}
func main() {
expanderDir = make(map[gwu.Expander]string)
// Create and build a window
win := gwu.NewWindow("main", "goperu - peruse files with browser")
win.Style().SetFullWidth()
win.SetHAlign(gwu.HA_LEFT)
win.SetCellPadding(2)
//win.SetTheme(gwu.THEME_DEBUG)
p := gwu.NewPanel()
p.Style().SetFullWidth()
hostname, err := os.Hostname()
if err != nil {
hostname = ""
}
link := gwu.NewLink("goperu", "https://github.com/gnewton/goperu")
p.Add(link)
p.AddVSpace(10)
l := gwu.NewLabel(hostname + ": Explore")
l.Style().SetColor(gwu.CLR_GREEN)
p.Add(l)
p.AddVSpace(20)
e := makeExpander(baseDir)
expanderDir[e] = baseDir
p.Add(e)
e.AddEHandler(handler, gwu.ETYPE_STATE_CHANGE)
//e.AddEHandler(handler, gwu.ETYPE_MOUSE_DOWN)
win.Add(p)
// Create and start a GUI server (omitting error check)
server := gwu.NewServer("goperu", "localhost:8081")
server.SetText("goperu")
server.AddWin(win)
server.Start("") // Also opens windows list in browser
}
func buildShowcaseWin(sess gwu.Session) {
win := gwu.NewWindow("show", "Showcase of Features - Gowut")
win.Style().SetFullSize()
win.AddEHandlerFunc(func(e gwu.Event) {
switch e.Type() {
case gwu.ETYPE_WIN_LOAD:
fmt.Println("LOADING window:", e.Src().Id())
case gwu.ETYPE_WIN_UNLOAD:
fmt.Println("UNLOADING window:", e.Src().Id())
}
}, gwu.ETYPE_WIN_LOAD, gwu.ETYPE_WIN_UNLOAD)
hiddenPan := gwu.NewNaturalPanel()
sess.SetAttr("hiddenPan", hiddenPan)
header := gwu.NewHorizontalPanel()
header.Style().SetFullWidth().SetBorderBottom2(2, gwu.BRD_STYLE_SOLID, "#777777")
l := gwu.NewLabel("Gowut - Showcase of Features")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetFontSize("120%")
header.Add(l)
header.AddHConsumer()
header.Add(gwu.NewLabel("Theme:"))
themes := gwu.NewListBox([]string{"default", "debug"})
themes.AddEHandlerFunc(func(e gwu.Event) {
win.SetTheme(themes.SelectedValue())
e.ReloadWin("show")
}, gwu.ETYPE_CHANGE)
header.Add(themes)
header.AddHSpace(10)
reset := gwu.NewLink("Reset", "#")
reset.SetTarget("")
reset.AddEHandlerFunc(func(e gwu.Event) {
e.RemoveSess()
e.ReloadWin("show")
}, gwu.ETYPE_CLICK)
header.Add(reset)
setNoWrap(header)
win.Add(header)
content := gwu.NewHorizontalPanel()
content.SetCellPadding(1)
content.SetVAlign(gwu.VA_TOP)
content.Style().SetFullSize()
demoWrapper := gwu.NewPanel()
demoWrapper.Style().SetPaddingLeftPx(5)
demoWrapper.AddVSpace(10)
demoTitle := gwu.NewLabel("")
demoTitle.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetFontSize("110%")
demoWrapper.Add(demoTitle)
demoWrapper.AddVSpace(10)
links := gwu.NewPanel()
links.SetCellPadding(1)
links.Style().SetPaddingRightPx(5)
demos := make(map[string]pdemo)
var selDemo pdemo
selectDemo := func(d pdemo, e gwu.Event) {
if selDemo != nil {
selDemo.link.Style().SetBackground("")
if e != nil {
e.MarkDirty(selDemo.link)
}
demoWrapper.Remove(selDemo.comp)
}
selDemo = d
d.link.Style().SetBackground("#88ff88")
demoTitle.SetText(d.link.Text())
if d.comp == nil {
d.comp = d.buildFunc(e)
}
demoWrapper.Add(d.comp)
if e != nil {
e.MarkDirty(d.link, demoWrapper)
}
}
createDemo := func(name string, buildFunc func(gwu.Event) gwu.Comp) pdemo {
link := gwu.NewLabel(name)
link.Style().SetFullWidth().SetCursor(gwu.CURSOR_POINTER).SetDisplay(gwu.DISPLAY_BLOCK).SetColor(gwu.CLR_BLUE)
demo := &demo{link: link, buildFunc: buildFunc}
link.AddEHandlerFunc(func(e gwu.Event) {
selectDemo(demo, e)
}, gwu.ETYPE_CLICK)
links.Add(link)
demos[name] = demo
return demo
}
links.Style().SetFullHeight().SetBorderRight2(2, gwu.BRD_STYLE_SOLID, "#777777")
links.AddVSpace(5)
homeDemo := createDemo("Home", buildHomeDemo)
selectDemo(homeDemo, nil)
links.AddVSpace(5)
l = gwu.NewLabel("Component Palette")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetFontSize("110%")
links.Add(l)
links.AddVSpace(5)
l = gwu.NewLabel("Containers")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD)
links.Add(l)
createDemo("Expander", buildExpanderDemo)
createDemo("Link (as Container)", buildLinkContainerDemo)
createDemo("Panel", buildPanelDemo)
createDemo("Table", buildTableDemo)
createDemo("TabPanel", buildTabPanelDemo)
createDemo("Window", buildWindowDemo)
links.AddVSpace(5)
l = gwu.NewLabel("Input components")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetDisplay(gwu.DISPLAY_BLOCK)
links.Add(l)
createDemo("CheckBox", buildCheckBoxDemo)
createDemo("ListBox", buildListBoxDemo)
createDemo("TextBox", buildTextBoxDemo)
createDemo("PasswBox", buildPasswBoxDemo)
createDemo("RadioButton", buildRadioButtonDemo)
createDemo("SwitchButton", buildSwitchButtonDemo)
links.AddVSpace(5)
l = gwu.NewLabel("Other components")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD)
links.Add(l)
createDemo("Button", buildButtonDemo)
createDemo("Html", buildHtmlDemo)
createDemo("Image", buildImageDemo)
createDemo("Label", buildLabelDemo)
createDemo("Link", buildLinkDemo)
createDemo("Timer", buildTimerDemo)
links.AddVConsumer()
setNoWrap(links)
content.Add(links)
content.Add(demoWrapper)
content.CellFmt(demoWrapper).Style().SetFullWidth()
win.Add(content)
win.CellFmt(content).Style().SetFullSize()
footer := gwu.NewHorizontalPanel()
footer.Style().SetFullWidth().SetBorderTop2(2, gwu.BRD_STYLE_SOLID, "#777777")
footer.Add(hiddenPan)
footer.AddHConsumer()
l = gwu.NewLabel("Copyright © 2013-2015 András Belicza. All rights reserved.")
l.Style().SetFontStyle(gwu.FONT_STYLE_ITALIC).SetFontSize("95%")
footer.Add(l)
footer.AddHSpace(10)
link := gwu.NewLink("Visit Gowut Home page", "https://sites.google.com/site/gowebuitoolkit/")
link.Style().SetFontStyle(gwu.FONT_STYLE_ITALIC).SetFontSize("95%")
footer.Add(link)
setNoWrap(footer)
win.Add(footer)
sess.AddWin(win)
}
func main() {
os.Mkdir("wikiPages", os.FileMode(os.ModeDir|0777))
LoadFile("wikiFile.txt")
fileName = "wikiFile.txt"
// Create and build a window
win := gwu.NewWindow("main", "AlfaWiki")
//win.Style().SetFullWidth()
win.SetHAlign(gwu.HA_CENTER)
win.SetCellPadding(2)
p := gwu.NewHorizontalPanel()
//p.Style().SetBorder2(1, gwu.BRD_STYLE_SOLID, gwu.CLR_BLACK)
p.SetCellPadding(2)
p = gwu.NewHorizontalPanel()
//p.Style().Set("width","100%")
//p.Style().SetFullHeight()
win.Add(p)
html = gwu.NewHtml(fmt.Sprintf("MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM%v", string(blackfriday.MarkdownCommon([]byte(wikiText)))))
html.Style().Set("width", "40%")
html.Style().Set("min-width", "40%")
html.Style().Set("word-break", "break-all")
tb = gwu.NewTextBox(wikiText)
tb.SetRows(50)
tb.SetCols(80)
//tb.Style().Set("width","100%")
//tb.Style().Set("min-width","20em")
tb.AddSyncOnETypes(gwu.ETYPE_KEY_UP)
p.Add(tb)
p.Add(html)
v := gwu.NewPanel()
//v.Style().SetFullHeight().SetBorderRight2(2, gwu.BRD_STYLE_SOLID, "#777777")
//v.Style().Set("width","20%")
p.Add(v)
tb.AddEHandlerFunc(func(e gwu.Event) {
wikiText = tb.Text()
html.SetHtml(fmt.Sprintf("MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM%v", string(blackfriday.MarkdownCommon([]byte(tb.Text())))))
e.MarkDirty(html)
ioutil.WriteFile(
fmt.Sprintf("wikiPages/%s", fileName),
[]byte(wikiText), os.FileMode(os.O_WRONLY|os.O_CREATE|os.O_TRUNC|0777))
}, gwu.ETYPE_CHANGE, gwu.ETYPE_KEY_UP)
newPageBox = gwu.NewTextBox("New Page Name")
newPageBox.SetRows(1)
newPageBox.SetCols(20)
v.Add(newPageBox)
newPageButt := gwu.NewButton("New Page")
newPageButt.AddEHandler(&NewPageHandler{text: "Not used"}, gwu.ETYPE_CLICK)
v.Add(newPageButt)
v.AddVSpace(20)
files, _ := ioutil.ReadDir("wikiPages")
for i, f := range files {
b := gwu.NewButton(f.Name() + " " + strconv.Itoa(i))
b.AddEHandler(&MyButtonHandler2{text: f.Name()}, gwu.ETYPE_CLICK)
v.Add(b)
}
v.AddVSpace(1000)
// Create and start a GUI server (omitting error check)
server := gwu.NewServer("guitest", "localhost:8081")
server.SetText("AlfaWiki")
win.SetTheme("debug")
win.AddHeadHtml(`<link rel="stylesheet" type="text/css" href="/mystyle.css">`)
server.AddWin(win)
server.Start("main") // Also opens windows list in browser
for {
}
}
func buildPrivateWins(s gwu.Session) {
// Create and build a window
win := gwu.NewWindow("main", "Main Window")
win.Style().SetFullWidth()
win.SetCellPadding(2)
p := gwu.NewPanel()
p.SetLayout(gwu.LAYOUT_HORIZONTAL)
p.SetCellPadding(2)
p.Add(gwu.NewLabel("I'm a label! Try clicking on the button=>"))
p.Add(gwu.NewLink("Google Home", "https://google.com"))
img := gwu.NewImage("", "https://www.google.com/images/srpr/logo3w.png")
img.Style().SetSize("25%", "25%")
p.Add(img)
win.Add(p)
button := gwu.NewButton("Click me")
button.AddEHandler(&MyButtonHandler{text: ":-)"}, gwu.ETYPE_CLICK)
win.Add(button)
extraBtns := gwu.NewPanel()
extraBtns.SetLayout(gwu.LAYOUT_NATURAL)
button.AddEHandlerFunc(func(e gwu.Event) {
extraBtn := gwu.NewButton("Extra #" + strconv.Itoa(extraBtns.CompsCount()))
extraBtn.AddEHandlerFunc(func(e gwu.Event) {
extraBtn.Parent().Remove(extraBtn)
e.MarkDirty(extraBtns)
}, gwu.ETYPE_CLICK)
extraBtns.Insert(extraBtn, 0)
e.MarkDirty(extraBtns)
}, gwu.ETYPE_CLICK)
win.Add(extraBtns)
p = gwu.NewPanel()
p.SetLayout(gwu.LAYOUT_HORIZONTAL)
p.SetCellPadding(2)
p.Style().SetBorder2(1, gwu.BRD_STYLE_SOLID, gwu.CLR_BLACK)
p.Add(gwu.NewLabel("A drop-down list being"))
wideListBox := gwu.NewListBox([]string{"50", "100", "150", "200", "250"})
wideListBox.Style().SetWidth("50")
wideListBox.AddEHandlerFunc(func(e gwu.Event) {
wideListBox.Style().SetWidth(wideListBox.SelectedValue() + "px")
e.MarkDirty(wideListBox)
}, gwu.ETYPE_CHANGE)
p.Add(wideListBox)
p.Add(gwu.NewLabel("pixel wide. And a multi-select list:"))
listBox := gwu.NewListBox([]string{"First", "Second", "Third", "Forth", "Fifth", "Sixth"})
listBox.SetMulti(true)
listBox.SetRows(4)
p.Add(listBox)
countLabel := gwu.NewLabel("Selected count: 0")
listBox.AddEHandlerFunc(func(e gwu.Event) {
selCount := len(listBox.SelectedIndices())
countLabel.SetText("Selected count: " + strconv.Itoa(selCount))
e.MarkDirty(countLabel)
}, gwu.ETYPE_CHANGE)
p.Add(countLabel)
win.Add(p)
greenCheckBox := gwu.NewCheckBox("I'm a check box. When checked, I'm green!")
greenCheckBox.AddEHandlerFunc(func(e gwu.Event) {
if greenCheckBox.State() {
greenCheckBox.Style().SetBackground(gwu.CLR_GREEN)
} else {
greenCheckBox.Style().SetBackground("")
}
e.MarkDirty(greenCheckBox)
}, gwu.ETYPE_CLICK)
greenCheckBox.AddEHandler(greenHandler, gwu.ETYPE_CLICK)
win.Add(greenCheckBox)
table := gwu.NewTable()
table.SetCellPadding(2)
table.Style().SetBorder2(1, gwu.BRD_STYLE_SOLID, gwu.CLR_BLACK)
table.EnsureSize(2, 4)
table.Add(gwu.NewLabel("TAB-"), 0, 0)
table.Add(gwu.NewLabel("LE"), 0, 1)
table.Add(gwu.NewLabel("DE-"), 0, 2)
table.Add(gwu.NewLabel("MO"), 0, 3)
table.Add(gwu.NewLabel("Enter your name:"), 1, 0)
tb := gwu.NewTextBox("")
tb.AddSyncOnETypes(gwu.ETYPE_KEY_UP)
table.Add(tb, 1, 1)
table.Add(gwu.NewLabel("You entered:"), 1, 2)
nameLabel := gwu.NewLabel("")
nameLabel.Style().SetColor(gwu.CLR_RED)
tb.AddEHandlerFunc(func(e gwu.Event) {
nameLabel.SetText(tb.Text())
e.MarkDirty(nameLabel)
}, gwu.ETYPE_CHANGE, gwu.ETYPE_KEY_UP)
table.Add(nameLabel, 1, 3)
win.Add(table)
table = gwu.NewTable()
table.Style().SetBorder2(1, gwu.BRD_STYLE_SOLID, gwu.CLR_BLACK)
table.SetAlign(gwu.HA_RIGHT, gwu.VA_TOP)
table.EnsureSize(5, 5)
for row := 0; row < 5; row++ {
group := gwu.NewRadioGroup(strconv.Itoa(row))
for col := 0; col < 5; col++ {
radio := gwu.NewRadioButton("= "+strconv.Itoa(col)+" =", group)
radio.AddEHandlerFunc(func(e gwu.Event) {
radios := []gwu.RadioButton{radio, radio.Group().PrevSelected()}
for _, radio := range radios {
if radio != nil {
if radio.State() {
radio.Style().SetBackground(gwu.CLR_GREEN)
} else {
radio.Style().SetBackground("")
}
e.MarkDirty(radio)
}
}
}, gwu.ETYPE_CLICK)
table.Add(radio, row, col)
}
}
table.SetColSpan(2, 1, 2)
table.SetRowSpan(3, 1, 2)
table.CellFmt(2, 2).Style().SetSizePx(150, 80)
table.CellFmt(2, 2).SetAlign(gwu.HA_RIGHT, gwu.VA_BOTTOM)
table.RowFmt(2).Style().SetBackground("#808080")
table.RowFmt(2).SetAlign(gwu.HA_DEFAULT, gwu.VA_MIDDLE)
table.RowFmt(3).Style().SetBackground("#d0d0d0")
table.RowFmt(4).Style().SetBackground("#b0b0b0")
win.Add(table)
tabPanel := gwu.NewTabPanel()
tabPanel.SetTabBarPlacement(gwu.TB_PLACEMENT_TOP)
for i := 0; i < 6; i++ {
if i == 3 {
img := gwu.NewImage("", "https://www.google.com/images/srpr/logo3w.png")
img.Style().SetWidthPx(100)
tabPanel.Add(img, gwu.NewLabel("This is some long content, random="+strconv.Itoa(rand.Int())))
continue
}
tabPanel.AddString(strconv.Itoa(i)+". tab", gwu.NewLabel("This is some long content, random="+strconv.Itoa(rand.Int())))
}
win.Add(tabPanel)
tabPanel = gwu.NewTabPanel()
tabPanel.SetTabBarPlacement(gwu.TB_PLACEMENT_LEFT)
tabPanel.TabBarFmt().SetVAlign(gwu.VA_BOTTOM)
for i := 7; i < 11; i++ {
l := gwu.NewLabel("This is some long content, random=" + strconv.Itoa(rand.Int()))
if i == 9 {
img := gwu.NewImage("", "https://www.google.com/images/srpr/logo3w.png")
img.Style().SetWidthPx(100)
tabPanel.Add(img, l)
tabPanel.CellFmt(l).Style().SetSizePx(400, 400)
continue
}
tabPanel.AddString(strconv.Itoa(i)+". tab", l)
tabPanel.CellFmt(l).Style().SetSizePx(400, 400)
}
win.Add(tabPanel)
s.AddWin(win)
win2 := gwu.NewWindow("main2", "Main2 Window")
win2.Add(gwu.NewLabel("This is just a test 2nd window."))
back := gwu.NewButton("Back")
back.AddEHandlerFunc(func(e gwu.Event) {
e.ReloadWin(win.Name())
}, gwu.ETYPE_CLICK)
win2.Add(back)
s.AddWin(win2)
}
func buildLoginWin(s gwu.Session) {
win := gwu.NewWindow("login", "Login Window")
win.Style().SetFullSize()
win.SetAlign(gwu.HA_CENTER, gwu.VA_MIDDLE)
p := gwu.NewPanel()
p.SetHAlign(gwu.HA_CENTER)
p.SetCellPadding(2)
l := gwu.NewLabel("Test GUI Login Window")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetFontSize("150%")
p.Add(l)
l = gwu.NewLabel("Login")
l.Style().SetFontWeight(gwu.FONT_WEIGHT_BOLD).SetFontSize("130%")
p.Add(l)
p.CellFmt(l).Style().SetBorder2(1, gwu.BRD_STYLE_DASHED, gwu.CLR_NAVY)
l = gwu.NewLabel("user/pass: admin/a")
l.Style().SetFontSize("80%").SetFontStyle(gwu.FONT_STYLE_ITALIC)
p.Add(l)
errL := gwu.NewLabel("")
errL.Style().SetColor(gwu.CLR_RED)
p.Add(errL)
table := gwu.NewTable()
table.SetCellPadding(2)
table.EnsureSize(2, 2)
table.Add(gwu.NewLabel("User name:"), 0, 0)
tb := gwu.NewTextBox("")
tb.Style().SetWidthPx(160)
table.Add(tb, 0, 1)
table.Add(gwu.NewLabel("Password:"******"")
pb.Style().SetWidthPx(160)
table.Add(pb, 1, 1)
p.Add(table)
b := gwu.NewButton("OK")
b.AddEHandlerFunc(func(e gwu.Event) {
if tb.Text() == "admin" && pb.Text() == "a" {
e.Session().RemoveWin(win) // Login win is removed, password will not be retrievable from the browser
buildPrivateWins(e.Session())
e.ReloadWin("main")
} else {
e.SetFocusedComp(tb)
errL.SetText("Invalid user name or password!")
e.MarkDirty(errL)
}
}, gwu.ETYPE_CLICK)
p.Add(b)
l = gwu.NewLabel("")
p.Add(l)
p.CellFmt(l).Style().SetHeightPx(200)
win.Add(p)
win.SetFocusedCompId(tb.Id())
p = gwu.NewPanel()
p.SetLayout(gwu.LAYOUT_HORIZONTAL)
p.SetCellPadding(2)
p.Add(gwu.NewLabel("Here's an ON/OFF switch which enables/disables the other one:"))
sw := gwu.NewSwitchButton()
sw.SetOnOff("ENB", "DISB")
sw.SetState(true)
p.Add(sw)
p.Add(gwu.NewLabel("And the other one:"))
sw2 := gwu.NewSwitchButton()
sw2.SetEnabled(true)
sw2.Style().SetWidthPx(100)
p.Add(sw2)
sw.AddEHandlerFunc(func(e gwu.Event) {
sw2.SetEnabled(sw.State())
e.MarkDirty(sw2)
}, gwu.ETYPE_CLICK)
win.Add(p)
s.AddWin(win)
}
func main() {
// Create and build a window
win := gwu.NewWindow("main", "Test GUI Window")
win.Style().SetFullWidth()
win.SetHAlign(gwu.HA_CENTER)
win.SetCellPadding(2)
// Button which changes window content
win.Add(gwu.NewLabel("I'm a label! Try clicking on the button=>"))
btn := gwu.NewButton("Click me")
btn.AddEHandler(&MyButtonHandler{text: ":-)"}, gwu.ETYPE_CLICK)
win.Add(btn)
btnsPanel := gwu.NewNaturalPanel()
btn.AddEHandlerFunc(func(e gwu.Event) {
// Create and add a new button...
newbtn := gwu.NewButton("Extra #" + strconv.Itoa(btnsPanel.CompsCount()))
newbtn.AddEHandlerFunc(func(e gwu.Event) {
btnsPanel.Remove(newbtn) // ...which removes itself when clicked
e.MarkDirty(btnsPanel)
}, gwu.ETYPE_CLICK)
btnsPanel.Insert(newbtn, 0)
e.MarkDirty(btnsPanel)
}, gwu.ETYPE_CLICK)
win.Add(btnsPanel)
// ListBox examples
p := gwu.NewHorizontalPanel()
p.Style().SetBorder2(1, gwu.BRD_STYLE_SOLID, gwu.CLR_BLACK)
p.SetCellPadding(2)
p.Add(gwu.NewLabel("A drop-down list being"))
widelb := gwu.NewListBox([]string{"50", "100", "150", "200", "250"})
widelb.Style().SetWidth("50")
widelb.AddEHandlerFunc(func(e gwu.Event) {
widelb.Style().SetWidth(widelb.SelectedValue() + "px")
e.MarkDirty(widelb)
}, gwu.ETYPE_CHANGE)
p.Add(widelb)
p.Add(gwu.NewLabel("pixel wide. And a multi-select list:"))
listBox := gwu.NewListBox([]string{"First", "Second", "Third", "Forth", "Fifth", "Sixth"})
listBox.SetMulti(true)
listBox.SetRows(4)
p.Add(listBox)
countLabel := gwu.NewLabel("Selected count: 0")
listBox.AddEHandlerFunc(func(e gwu.Event) {
countLabel.SetText("Selected count: " + strconv.Itoa(len(listBox.SelectedIndices())))
e.MarkDirty(countLabel)
}, gwu.ETYPE_CHANGE)
p.Add(countLabel)
win.Add(p)
// Self-color changer check box
greencb := gwu.NewCheckBox("I'm a check box. When checked, I'm green!")
greencb.AddEHandlerFunc(func(e gwu.Event) {
if greencb.State() {
greencb.Style().SetBackground(gwu.CLR_GREEN)
} else {
greencb.Style().SetBackground("")
}
e.MarkDirty(greencb)
}, gwu.ETYPE_CLICK)
win.Add(greencb)
// TextBox with echo
p = gwu.NewHorizontalPanel()
p.Add(gwu.NewLabel("Enter your name:"))
tb := gwu.NewTextBox("")
tb.AddSyncOnETypes(gwu.ETYPE_KEY_UP)
p.Add(tb)
p.Add(gwu.NewLabel("You entered:"))
nameLabel := gwu.NewLabel("")
nameLabel.Style().SetColor(gwu.CLR_RED)
tb.AddEHandlerFunc(func(e gwu.Event) {
nameLabel.SetText(tb.Text())
e.MarkDirty(nameLabel)
}, gwu.ETYPE_CHANGE, gwu.ETYPE_KEY_UP)
p.Add(nameLabel)
win.Add(p)
// Create and start a GUI server (omitting error check)
server := gwu.NewServer("guitest", "localhost:8081")
server.SetText("Test GUI App")
server.AddWin(win)
server.Start("") // Also opens windows list in browser
}