private UIElement GenerateContainer(
ICustomItemContainerGenerator generator,
int index,
bool measureInvalidated,
bool delayDataContext )
{
bool isNewlyRealized;
UIElement container = ( UIElement )generator.GenerateNext( out isNewlyRealized );
if( container != null )
{
if( isNewlyRealized )
{
if( !this.Children.Contains( container ) )
{
this.Children.Add( container );
}
this.EnableElementNavigation( container );
KeyboardNavigation.SetTabIndex( container, index );
}
this.HandleGeneratedContainerPreparation( container, index, isNewlyRealized, delayDataContext );
if( ( isNewlyRealized ) || ( measureInvalidated ) )
{
this.MeasureContainer( container );
}
}
return container;
}
private UIElement GenerateContainer( ICustomItemContainerGenerator generator, int index, bool forceMeasure )
{
bool isNewlyRealized;
var container = ( UIElement )generator.GenerateNext( out isNewlyRealized );
if( container == null )
return null;
if( isNewlyRealized )
{
var collection = this.Children;
if( !collection.Contains( container ) )
{
collection.Add( container );
}
this.EnableElementNavigation( container );
KeyboardNavigation.SetTabIndex( container, index );
this.PrepareContainer( container );
this.MeasureContainer( container );
}
else if( forceMeasure )
{
this.MeasureContainer( container );
}
return container;
}
