75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package actions
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import (
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"log"
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"strings"
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"github.com/gotk3/gotk3/glib"
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)
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// Stateful is a stateful action group, which would allow additional methods
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// that would otherwise be impossible to do with a simple Action Map.
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type Stateful struct {
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glib.IActionGroup
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group *glib.SimpleActionGroup
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labels []string // labels
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}
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func NewStateful() *Stateful {
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group := glib.SimpleActionGroupNew()
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return &Stateful{
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IActionGroup: group,
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group: group,
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}
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}
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func (s *Stateful) Reset() {
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for _, label := range s.labels {
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s.group.RemoveAction(ActionName(label))
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}
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s.labels = nil
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}
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// Len returns the number of menu entries.
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func (s *Stateful) Len() int {
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return len(s.labels)
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}
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func (s *Stateful) AddAction(label string, call func()) {
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sa := glib.SimpleActionNew(ActionName(label), nil)
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sa.Connect("activate", call)
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s.labels = append(s.labels, label)
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s.group.AddAction(sa)
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}
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func (s *Stateful) LookupAction(label string) *glib.Action {
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for _, l := range s.labels {
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if l == label {
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return s.group.LookupAction(ActionName(label))
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}
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}
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return nil
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}
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func (s *Stateful) RemoveAction(label string) {
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for i, l := range s.labels {
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if l == label {
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s.labels = append(s.labels[:i], s.labels[:i+1]...)
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s.group.RemoveAction(ActionName(label))
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return
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}
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}
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}
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// ActionName converts the label name into the action name.
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func ActionName(label string) (actionName string) {
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actionName = strings.Replace(label, " ", "-", -1)
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if !glib.ActionNameIsValid(actionName) {
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log.Panicf("Label makes for invalid action name %q\n", actionName)
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}
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return
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}
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