func (r *Radio) makeButtons(options []string) {
// see if the options are actually different
changed := len(r.options) != len(options)
if !changed {
for i := range r.options {
if r.options[i] != options[i] {
changed = true
}
}
}
if !changed {
return
}
r.options = options
// remove old buttons
for _, b := range r.buttons {
r.RemoveBlock(&b.Block)
}
for _, d := range r.buttonsDone {
d <- true
}
r.buttons = make([]*Button, len(r.options))
r.buttonsDone = make([]chan bool, len(r.options))
for i, option := range r.options {
ob := NewButton(option)
r.buttons[i] = ob
r.buttonsDone[i] = make(chan bool, 1)
pb := layouts.NewPadBox(layouts.PadConfig{
Left: 2, Right: 2,
Top: 2, Bottom: 2,
}, &ob.Block)
r.radioGrid.Add(&pb.Block, layouts.GridComponent{
GridX: 0, GridY: i,
AnchorLeft: true,
AnchorRight: true,
AnchorTop: true,
AnchorBottom: true,
})
clicker := make(chan wde.Button, 1)
go func(clicker chan wde.Button, index int, done chan bool) {
for {
select {
case <-clicker:
r.SetSelection <- index
case <-done:
return
}
}
}(clicker, i, r.buttonsDone[i])
ob.AddClicker <- clicker
}
r.updateButtons()
}
func uikplay() {
w, err := uik.NewWindow(nil, 480, 320)
if err != nil {
fmt.Println(err)
return
}
w.W.SetTitle("go.uik")
gcfg, err := layouts.ParseGridConfig(`
{
"Components": {
"radio": {
"GridX": 0,
"GridY": 0,
"AnchorLeft": true,
"AnchorTop": true
},
"label": {
"GridX": 1,
"GridY": 0,
"AnchorRight": true,
"AnchorTop": true
}
}
}
`)
if err != nil {
fmt.Println(err)
return
}
ge := layouts.NewGridEngine(gcfg)
g := layouts.NewLayouter(ge)
rg := widgets.NewRadio([]string{"bread", "cake", "beheadings"})
ge.AddName("radio", &rg.Block)
l := widgets.NewLabel(geom.Coord{100, 30}, widgets.LabelConfig{"text", 14, color.Black})
ge.AddName("label", &layouts.NewPadBox(layouts.PadConfig{Right: 10}, &l.Block).Block)
selLis := make(widgets.SelectionListener, 1)
rg.AddSelectionListener <- selLis
w.SetPane(&g.Block)
w.Show()
done := make(chan interface{}, 1)
isDone := func(e interface{}) (accept, done bool) {
_, accept = e.(uik.CloseEvent)
done = accept
return
}
w.Block.Subscribe <- uik.Subscription{isDone, done}
loop:
for {
select {
case sel := <-selLis:
l.SetConfig(widgets.LabelConfig{
Text: fmt.Sprintf("Clicked option %d, %q", sel.Index, sel.Option),
FontSize: 14,
Color: color.Black,
})
case <-done:
break loop
}
}
w.W.Close()
wde.Stop()
}