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package scopes
// RadioButtonsFilter is a filter that displays mutually exclusive list of options
type RadioButtonsFilter struct {
filterWithOptions
Label string
}
// NewRadioButtonsFilter creates a new radio button filter.
func NewRadioButtonsFilter(id, label string) *RadioButtonsFilter {
return &RadioButtonsFilter{
filterWithOptions: filterWithOptions{
filterBase: filterBase{
Id: id,
DisplayHints: FilterDisplayDefault,
FilterType: "radio_buttons",
},
},
Label: label,
}
}
// UpdateState updates the value of a particular option in the filter state.
func (f *RadioButtonsFilter) UpdateState(state FilterState, optionId string, active bool) {
if !f.isValidOption(optionId) {
panic("invalid option ID")
}
// If the state isn't in a form we expect, treat it as empty
selected, _ := state[f.Id].([]interface{})
if active {
if len(selected) == 0 {
// just add the optionId
selected = append(selected, optionId)
} else if len(selected) > 0 && selected[0] != optionId {
// we have another option selected, just select the current one
selected[0] = optionId
}
} else {
if len(selected) > 0 && selected[0] == optionId {
// we have 1 option selected and it's the current one.
// clear the state
selected = make([]interface{}, 0)
}
}
state[f.Id] = selected
}
func (f *RadioButtonsFilter) serializeFilter() map[string]interface{} {
v := f.filterBase.serializeFilter()
v["label"] = f.Label
v["options"] = f.Options
return v
}
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