// Set implements org.freedesktop.Properties.Set.
func (p *Properties) Set(iface, property string, newv dbus.Variant) *dbus.Error {
p.mut.Lock()
defer p.mut.Unlock()
m, ok := p.m[iface]
if !ok {
return ErrIfaceNotFound
}
prop, ok := m[property]
if !ok {
return ErrPropNotFound
}
if !prop.Writable {
return ErrReadOnly
}
if newv.Signature() != dbus.SignatureOf(prop.Value) {
return ErrInvalidArg
}
if prop.Callback != nil {
err := prop.Callback(&Change{p, iface, property, newv.Value()})
if err != nil {
return err
}
}
p.set(iface, property, newv.Value())
return nil
}
// Introspection returns the introspection data that represents the properties
// of iface.
func (p *Properties) Introspection(iface string) []introspect.Property {
p.mut.RLock()
defer p.mut.RUnlock()
m := p.m[iface]
s := make([]introspect.Property, 0, len(m))
for k, v := range m {
p := introspect.Property{Name: k, Type: dbus.SignatureOf(v.Value).String()}
if v.Writable {
p.Access = "readwrite"
} else {
p.Access = "read"
}
s = append(s, p)
}
return s
}