/// <summary>
/// Raises the <see cref="CurrentChanging"/> event.
/// </summary>
protected virtual void OnCurrentChanging(CurrentChangingEventArgs e)
{
if (_updating <= 0)
{
CurrentChanging?.Invoke(this, e);
}
}
/// <summary>
/// Currently selected item changing event
/// </summary>
/// <param name="e">event args</param>
protected virtual void OnCurrentChanging(CurrentChangingEventArgs e)
{
if (_deferCounter > 0)
{
return;
}
CurrentChanging?.Invoke(this, e);
}
private bool CanChangeCurrent()
{
var e = new CurrentChangingEventArgs(true);
CurrentChanging?.Invoke(this, e);
return(false == e.Cancel);
}
/// <summary>
/// Currently selected item changing event
/// </summary>
/// <param name="e">event args</param>
private void OnCurrentChanging(CurrentChangingEventArgs e)
{
if (_deferCounter > 0)
{
return;
}
CurrentChanging?.Invoke(this, e);
}
private bool CheckCanChangeCurrent()
{
var eventArgs = new CurrentChangingEventArgs();
CurrentChanging?.Invoke(this, eventArgs);
if (eventArgs.Cancel)
{
return(false);
}
return(true);
}
/// <summary>
/// Raises the CurrentChanging event
/// </summary>
/// <param name="args">
/// CancelEventArgs used by the consumer of the event. args.Cancel will
/// be true after this call if the CurrentItem should not be changed for
/// any reason.
/// </param>
/// <exception cref="InvalidOperationException">
/// This CurrentChanging event cannot be canceled.
/// </exception>
protected virtual void OnCurrentChanging(CurrentChangingEventArgs args)
{
if (args == null)
{
throw new ArgumentNullException("args");
}
if (_currentChangedMonitor.Busy)
{
if (args.IsCancelable)
{
args.Cancel = true;
}
return;
}
CurrentChanging?.Invoke(this, args);
}
private void CollectionView_CurrentChanging(object sender, CurrentChangingEventArgs e)
{
CurrentChanging?.Invoke(this, e);
}
