/// <summary>
/// Called after a UISensitiveObject has been attached to the sensitive-tree.
/// </summary>
/// <param name="obj">The new object.</param>
private void ObjectAttached(UISensitiveObject obj)
{
if (this.raisingMouseEvents)
{
/// Postpone the needed sensor operations
List <UISensitiveObject> newObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref newObjects);
foreach (UISensitiveObject newObj in newObjects)
{
/// Save the created sensor and indicate that it will have to be registered.
UIMouseSensor newSensor = newObj.MouseSensor as UIMouseSensor;
if (newSensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.tmpSensors.Add(newSensor);
this.tmpSensorOperations.Add(true);
}
}
else
{
/// Execute the needed sensor operations
List <UISensitiveObject> newObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref newObjects);
foreach (UISensitiveObject newObj in newObjects)
{
UIMouseSensor newSensor = newObj.MouseSensor as UIMouseSensor;
if (newSensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.allSensors.Add(newSensor);
}
}
}
/// <summary>
/// Called before a UISensitiveObject is detached from the sensitive-tree.
/// </summary>
/// <param name="obj">The detaching object.</param>
private void ObjectDetaching(UISensitiveObject obj)
{
if (this.raisingMouseEvents)
{
/// Postpone the needed sensor operations
List <UISensitiveObject> detachingObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref detachingObjects);
foreach (UISensitiveObject detachingObj in detachingObjects)
{
/// Save the removed sensor and indicate that it will have to be unregistered.
UIMouseSensor removedSensor = detachingObj.MouseSensor as UIMouseSensor;
if (removedSensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.tmpSensors.Add(removedSensor);
this.tmpSensorOperations.Add(false);
}
}
else
{
/// Execute the needed sensor operations
List <UISensitiveObject> detachingObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref detachingObjects);
foreach (UISensitiveObject detachingObj in detachingObjects)
{
UIMouseSensor deletedSensor = detachingObj.MouseSensor as UIMouseSensor;
if (deletedSensor != null && this.allSensors.Contains(deletedSensor))
{
deletedSensor.Reset();
this.allSensors.Remove(deletedSensor);
int idxOfDeleted = this.touchedSensors.IndexOf(deletedSensor);
if (idxOfDeleted != -1)
{
this.touchedSensors.RemoveRange(idxOfDeleted, this.touchedSensors.Count - idxOfDeleted);
}
if (this.activeSensor == deletedSensor)
{
this.activeSensor = null;
}
}
else
{
throw new UIException("UIMouseSensor not registered!");
}
}
}
}