private void refreshAdjustments()
{
// because these components may be pooled, relying on DI is not feasible.
// in the majority of cases the traversal should be quite short. may require later attention if a use case comes up which this is not true for.
if (parentAdjustment != null)
{
adjustments.UnbindAdjustments(parentAdjustment);
parentAdjustment = null;
}
Drawable cursor = this;
while ((cursor = cursor.Parent) != null)
{
if (!(cursor is IAggregateAudioAdjustment candidate))
{
continue;
}
// components may be delegating the aggregates of a contained child.
// to avoid binding to one's self, check reference equality on an arbitrary bindable.
if (candidate.AggregateVolume != adjustments.AggregateVolume)
{
parentAdjustment = candidate;
adjustments.BindAdjustments(parentAdjustment);
break;
}
}
}
public void TestValueRestoredAfterComponentUnind()
{
var adjustments = new AudioAdjustments();
var adjustments2 = new AudioAdjustments();
adjustments.BindAdjustments(adjustments2);
adjustments2.Volume.Value = 0.5f;
adjustments.UnbindAdjustments(adjustments2);
Assert.AreEqual(1.0, adjustments.AggregateVolume.Value);
}
private void refreshLayoutFromParent()
{
// because these components may be pooled, relying on DI is not feasible.
// in the majority of cases the traversal should be quite short. may require later attention if a use case comes up which this is not true for.
Drawable cursor = this;
IAggregateAudioAdjustment newAdjustments = null;
IAudioMixer newMixer = null;
while ((cursor = cursor.Parent) != null)
{
if (newAdjustments == null && cursor is IAggregateAudioAdjustment candidateAdjustment)
{
// components may be delegating the aggregates of a contained child.
// to avoid binding to one's self, check reference equality on an arbitrary bindable.
if (candidateAdjustment.AggregateVolume != adjustments.AggregateVolume)
{
newAdjustments = candidateAdjustment;
}
}
if (newMixer == null && cursor is IAudioMixer candidateMixer)
{
newMixer = candidateMixer;
}
if (newAdjustments != null && newMixer != null)
{
break;
}
}
if (newAdjustments != parentAdjustment)
{
if (parentAdjustment != null)
{
adjustments.UnbindAdjustments(parentAdjustment);
}
parentAdjustment = newAdjustments;
if (parentAdjustment != null)
{
adjustments.BindAdjustments(parentAdjustment);
}
}
if (parentMixer != newMixer)
{
OnMixerChanged(new ValueChangedEvent <IAudioMixer>(parentMixer, newMixer));
}
parentMixer = newMixer;
}