/// <summary>
/// Called when source changed.
/// </summary>
/// <param name="args">
/// The args.
/// </param>
private void OnSourceChanged(SourceChangedEventArgs args)
{
if (this.SourceChanged != null)
{
this.SourceChanged(this, args);
}
}
/// <summary>
/// Called when source changed.
/// </summary>
/// <param name="args">
/// The args.
/// </param>
private void OnSourceChanged(SourceChangedEventArgs args)
{
if (this.SourceChanged != null)
{
this.SourceChanged(this, args);
}
}
/// <summary>
/// Update the instance.
/// </summary>
/// <param name="forceEvent">
/// Indicates whether force to raise the SourceChangedEvent.
/// </param>
public void Update(bool forceEvent = false)
{
if (this.propertyObservation == null)
{
return;
}
var tail = this.Tail;
if (tail != null)
{
this.Source = tail.Source;
}
var value = this.SourceMode == SourceMode.Property ? this.Value : this.Source;
var oldValue = this.oldValueReference != null ? this.oldValueReference.Target : null;
if (!forceEvent && object.Equals(oldValue, value))
{
return;
}
var changedEventArgs = new SourceChangedEventArgs(this.SourceMode, oldValue, value);
this.OnSourceChanged(changedEventArgs);
oldValueReference = new WeakReference(value);
}
/// <summary>
/// Handles the <see cref="E:SourceChanged" /> event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="SourceChangedEventArgs"/> instance containing the event data.</param>
private void OnSourceChanged(object sender, SourceChangedEventArgs e)
{
if (e.OldSource == e.NewSource)
{
return;
}
this.DetachEvent();
this.AttachEvent(
this.Data,
this.EventName,
this.HandlerName,
this.eventFilter);
}
/// <summary>
/// Update the instance.
/// </summary>
/// <param name="forceEvent">
/// Indicates whether force to raise the SourceChangedEvent.
/// </param>
public void Update(bool forceEvent = false)
{
if (this.propertyObservation == null)
{
return;
}
var tail = this.Tail;
if (tail != null)
{
this.Source = tail.Source;
}
var value = this.SourceMode == SourceMode.Property ? this.Value : this.Source;
var oldValue = this.oldValueReference != null ? this.oldValueReference.Target : null;
if (!forceEvent && object.Equals(oldValue, value))
{
return;
}
var changedEventArgs = new SourceChangedEventArgs(this.SourceMode, oldValue, value);
this.OnSourceChanged(changedEventArgs);
oldValueReference = new WeakReference(value);
}
/// <summary>
/// Handles the <see cref="E:SourceChanged" /> event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="SourceChangedEventArgs"/> instance containing the event data.</param>
private void OnSourceChanged(object sender, SourceChangedEventArgs e)
{
if (e.OldSource == e.NewSource)
{
return;
}
this.DetachEvent();
this.AttachEvent(
this.Data,
this.EventName,
this.HandlerName,
this.eventFilter);
}
