internal IDisposable SetRestriction( AutoScrollCurrentItemSourceTriggers value )
{
var disposable = new SingleRestriction( value );
m_restrictions.Add( new WeakReference( disposable ) );
return disposable;
}
internal IDisposable SetRestriction(AutoScrollCurrentItemSourceTriggers value)
{
var disposable = new SingleRestriction(value);
m_restrictions.Add(new WeakReference(disposable));
return(disposable);
}
internal RequestingDelayBringIntoViewAndFocusCurrentEventArgs( AutoScrollCurrentItemSourceTriggers trigger )
{
m_trigger = trigger;
}
protected override IDisposable SetQueueBringIntoViewRestrictions(AutoScrollCurrentItemSourceTriggers triggers)
{
return(this.DataGridControl.SetQueueBringIntoViewRestrictions(triggers));
}
internal RequestingDelayBringIntoViewAndFocusCurrentEventArgs(AutoScrollCurrentItemSourceTriggers trigger)
{
m_trigger = trigger;
}
protected virtual IDisposable SetQueueBringIntoViewRestrictions(AutoScrollCurrentItemSourceTriggers triggers)
{
return(null);
}
internal SingleRestriction( AutoScrollCurrentItemSourceTriggers value )
{
m_value = value;
}
internal bool IsBringIntoViewAllowed( AutoScrollCurrentItemSourceTriggers trigger )
{
if( trigger == AutoScrollCurrentItemSourceTriggers.None )
return false;
var source = ( ~m_inhibitAutoScroll.Restrictions & trigger );
if( source == AutoScrollCurrentItemSourceTriggers.None )
return false;
var options = this.AutoScrollCurrentItem;
switch( source )
{
case AutoScrollCurrentItemSourceTriggers.Editing:
case AutoScrollCurrentItemSourceTriggers.Navigation:
return true;
case AutoScrollCurrentItemSourceTriggers.CurrentItemChanged:
case AutoScrollCurrentItemSourceTriggers.CurrentColumnChanged:
case AutoScrollCurrentItemSourceTriggers.CollectionViewCurrentItemChanged:
case AutoScrollCurrentItemSourceTriggers.SelectionChanged:
case AutoScrollCurrentItemSourceTriggers.ColumnsCollectionChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.CurrentChanged );
case AutoScrollCurrentItemSourceTriggers.SortChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.SortChanged );
case AutoScrollCurrentItemSourceTriggers.GroupChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.GroupChanged );
case AutoScrollCurrentItemSourceTriggers.FocusChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.FocusChanged );
case AutoScrollCurrentItemSourceTriggers.ItemsSourceChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.ItemsSourceChanged );
case AutoScrollCurrentItemSourceTriggers.ViewChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.ViewChanged );
case AutoScrollCurrentItemSourceTriggers.ThemeChanged:
return DataGridControl.IsSet( options, AutoScrollCurrentItemTriggers.ThemeChanged );
}
return false;
}
private void DelayBringIntoViewAndFocusCurrent( DispatcherPriority priority, AutoScrollCurrentItemSourceTriggers trigger )
{
if( ( m_queueBringIntoView != null ) || m_inhibitBringIntoView.IsSet || m_inhibitSetFocus.IsSet || !this.IsBringIntoViewAllowed( trigger ) )
return;
m_queueBringIntoView = this.QueueBringIntoView( priority );
//if the operation is not inhibited
if( m_queueBringIntoView != null )
{
//register to the DispatcherOperation completed event
m_queueBringIntoView.Completed += new EventHandler( BringIntoView_Completed );
}
}
internal void DelayBringIntoViewAndFocusCurrent( AutoScrollCurrentItemSourceTriggers trigger )
{
this.DelayBringIntoViewAndFocusCurrent( DispatcherPriority.DataBind, trigger );
}
internal IDisposable SetQueueBringIntoViewRestrictions( AutoScrollCurrentItemSourceTriggers trigger )
{
return m_inhibitAutoScroll.SetRestriction( trigger );
}
internal SingleRestriction(AutoScrollCurrentItemSourceTriggers value)
{
m_value = value;
}
protected virtual IDisposable SetQueueBringIntoViewRestrictions( AutoScrollCurrentItemSourceTriggers triggers )
{
return null;
}
private void RequestDelayBringIntoViewAndFocusCurrent( AutoScrollCurrentItemSourceTriggers trigger )
{
var handler = this.RequestingDelayBringIntoViewAndFocusCurrent;
if( handler == null )
return;
handler.Invoke( this, new RequestingDelayBringIntoViewAndFocusCurrentEventArgs( trigger ) );
}
protected override IDisposable SetQueueBringIntoViewRestrictions( AutoScrollCurrentItemSourceTriggers triggers )
{
return this.DataGridControl.SetQueueBringIntoViewRestrictions( triggers );
}
