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public class Dino.WeakTimeout {
// XXX: If you get an error saying your function doesn't match the delegate, make sure it's static!
// These are marked as "has_target=false" so you can't close over "this" and leak it in your lambda.
[CCode (has_target = false, instance_pos = 0)]
public delegate bool SourceFunc<T> (T object);
[CCode (has_target = false, instance_pos = 0)]
public delegate void SourceOnceFunc<T> (T object);
public static uint add<T>(uint interval, T object, owned SourceFunc<T> function, int priority = GLib.Priority.DEFAULT) {
var weak = WeakRef((Object)object);
return GLib.Timeout.add(interval, () => {
var strong = weak.get();
if (strong == null) return false;
return function(strong);
}, priority);
}
public static uint add_once<T>(uint interval, T object, owned SourceOnceFunc<T> function, int priority = GLib.Priority.DEFAULT) {
var weak = WeakRef((Object)object);
return GLib.Timeout.add(interval, () => {
var strong = weak.get();
if (strong == null) return false;
function(strong);
return false;
}, priority);
}
public static uint add_seconds<T>(uint interval, T object, owned SourceFunc<T> function, int priority = GLib.Priority.DEFAULT) {
return add(interval * 1000, object, (owned) function, priority);
}
// This one doesn't have an upstream equivalent, but it seems pretty obvious to me
public static uint add_seconds_once<T>(uint interval, T object, owned SourceOnceFunc<T> function, int priority = GLib.Priority.DEFAULT) {
return add_once(interval * 1000, object, (owned) function, priority);
}
}
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