public int GetGroupIndex( Group group )
{
if( group == null )
throw new ArgumentNullException( "group" );
this.EnsureNodeTreeCreated();
GeneratorNodeHelper nodeHelper = new GeneratorNodeHelper( m_startNode, 0, 0 );
if( nodeHelper.FindGroup( group.CollectionViewGroup ) )
return nodeHelper.Index;
//the item was not found in this generator's content... check all the detail generators
foreach( KeyValuePair<object, List<DetailGeneratorNode>> itemToDetails in m_masterToDetails )
{
foreach( DetailGeneratorNode detailNode in itemToDetails.Value )
{
int groupIndex = detailNode.DetailGenerator.GetGroupIndex( group );
if( groupIndex > -1 )
return groupIndex + this.FindGlobalIndexForDetailNode( detailNode );
}
}
return -1;
}
public Group GetGroupFromCollectionViewGroup( Group parentUIGroup, CollectionViewGroup collectionViewGroup )
{
this.EnsureNodeTreeCreated();
GroupGeneratorNode groupGeneratorNode = null;
if( m_groupNodeMappingCache.TryGetValue( collectionViewGroup, out groupGeneratorNode ) )
return groupGeneratorNode.UIGroup;
return null;
}
internal void SetGroup( Group group )
{
m_group = group;
this.Content = m_group;
GroupHeaderControl.SetGroup( this, group );
if( this.PropertyChanged != null )
{
this.PropertyChanged( this, new PropertyChangedEventArgs( "Group" ) );
}
}
internal static void SetGroup( DependencyObject obj, Group value )
{
obj.SetValue( GroupHeaderControl.GroupProperty, value );
}
private void UpdateContentTemplate( Column column, Group group )
{
if( column == null )
return;
bool contentTemplateAffected = false;
bool contentTemplateSelectorAffected = false;
if( column.GroupValueTemplate != null )
{
this.ContentTemplate = column.GroupValueTemplate;
contentTemplateAffected = true;
}
else if( column.GroupValueTemplateSelector != null )
{
this.ContentTemplateSelector = column.GroupValueTemplateSelector;
contentTemplateSelectorAffected = true;
}
if( !contentTemplateAffected && !contentTemplateSelectorAffected )
{
ForeignKeyConfiguration foreignKeyConfiguration = column.ForeignKeyConfiguration;
if( foreignKeyConfiguration != null )
{
if( column.CellContentTemplate != null )
{
this.ContentTemplate = column.CellContentTemplate;
contentTemplateAffected = true;
}
else if( column.CellContentTemplateSelector != null )
{
this.ContentTemplateSelector = column.CellContentTemplateSelector;
contentTemplateSelectorAffected = true;
}
}
}
if( !contentTemplateAffected )
{
this.ClearValue( ContentPresenter.ContentTemplateProperty );
}
if( !contentTemplateSelectorAffected )
{
this.ClearValue( ContentPresenter.ContentTemplateSelectorProperty );
}
}
private void UpdateContent( Group group )
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext( this );
if( dataGridContext == null )
return;
if( group == null )
return;
string groupBy = group.GroupBy;
if( string.IsNullOrEmpty( groupBy ) )
throw new DataGridInternalException( "Group.GroupBy is null." );
Column column = dataGridContext.Columns[ groupBy ] as Column;
object newContent = group.Value;
if( column != null )
{
ForeignKeyConfiguration foreignKeyConfiguration = column.ForeignKeyConfiguration;
if( foreignKeyConfiguration != null )
{
// Ensure to set the Content converted according to the DataContext
// when a converter is present. Else, the DataContext will be displayed
if( foreignKeyConfiguration.ForeignKeyConverter != null )
{
newContent = foreignKeyConfiguration.ForeignKeyConverter.GetValueFromKey(
group.Value,
foreignKeyConfiguration );
}
}
}
// We must update the template according
// to values present on Column
this.UpdateContentTemplate( column, group );
this.Content = newContent;
}
internal void SetGroup( Group group )
{
m_group = group;
this.Content = m_group;
GroupHeaderControl.SetGroup( this, group );
this.RaisePropertyChanged( "Group" );
}