public UpdateMeasureRequiredEventArgs( UpdateMeasureTriggeredAction action, object parameters )
: this( action )
{
this.Parameters = parameters;
}
public UpdateMeasureRequiredEventArgs( UpdateMeasureTriggeredAction action )
{
this.TriggeredAction = action;
}
public UpdateMeasureRequiredEventArgs(UpdateMeasureTriggeredAction action)
{
this.TriggeredAction = action;
}
public UpdateMeasureRequiredEventArgs(UpdateMeasureTriggeredAction action, object parameters)
: this( action )
{
this.Parameters = parameters;
}
private void UpdateChildren( UpdateMeasureTriggeredAction action )
{
Row parentRow = this.ParentRow;
// A CurrentItemChanged was received for a non current Row
if( ( action == UpdateMeasureTriggeredAction.CurrentItemChanged ) && ( parentRow != null ) && ( !parentRow.IsCurrent ) )
return;
DataGridContext dataGridContext = this.DataGridContext;
Debug.Assert( dataGridContext != null, "Should not be called when a container is not prepared" );
// If the parent Row is not prepared, do not update children
if( dataGridContext == null )
return;
bool currentItemChangedOnCurrentRow = ( action == UpdateMeasureTriggeredAction.CurrentItemChanged ) && ( parentRow != null ) && ( parentRow.IsCurrent );
var columnVirtualizationManager = this.ColumnVirtualizationManager;
if( ( m_lastColumnVirtualizationManagerVersion != columnVirtualizationManager.Version ) || ( currentItemChangedOnCurrentRow )
|| ( m_virtualizingCellCollectionChangedDispatcherOperation != null ) )
{
this.UpdateChildren( dataGridContext, columnVirtualizationManager, this.ParentRowCells );
m_lastColumnVirtualizationManagerVersion = columnVirtualizationManager.Version;
this.InvalidateMeasure();
m_virtualizingCellCollectionChangedDispatcherOperation = null;
}
}
