internal ItemPropertyNameMap( DataGridItemPropertyCollection itemProperties )
{
if( itemProperties == null )
throw new ArgumentNullException( "itemProperties" );
m_dataGridItemPropertyCollection = new WeakReference( itemProperties );
CollectionChangedEventManager.AddListener( itemProperties, this );
}
public static void RemoveListener( DataGridItemPropertyCollection source, IWeakEventListener listener )
{
if( source == null )
throw new ArgumentNullException( "source" );
if( listener == null )
throw new ArgumentNullException( "listener" );
CurrentManager.ProtectedRemoveListener( source, listener );
}
protected DataGridDetailDescription()
{
m_detailDescriptions = new DataGridDetailDescriptionCollection();
m_detailDescriptions.CollectionChanged += this.OnDetailDescriptionsCollectionChanged;
m_itemProperties = new DataGridItemPropertyCollection();
m_itemProperties.CollectionChanged += this.OnItemPropertiesCollectionChanged;
m_groupDescriptions = new GroupDescriptionCollection();
m_sortDescriptions = new DataGridSortDescriptionCollection();
m_statFunctions = new StatFunctionCollection();
m_autoFilterValues = new ReadOnlyDictionary<string, IList>();
m_autoFilteredItems = new ObservableCollection<DataGridItemPropertyBase>();
m_registeredFieldNamesToAutoFilterValues = new Dictionary<string, INotifyCollectionChanged>();
m_registeredAutoFilterValuesToFieldNames = new Dictionary<INotifyCollectionChanged, string>();
this.AutoCreateDetailDescriptions = true;
this.AutoCreateItemProperties = true;
this.DefaultCalculateDistinctValues = true;
}
private static Dictionary<string, FieldDescriptor> GetFieldsForDataGridCollectionViewBase(
DataGridCollectionViewBase dataGridCollectionViewBase,
DataGridItemPropertyCollection itemProperties )
{
int fieldCount = itemProperties.Count;
Dictionary<string, FieldDescriptor> fieldDescriptors =
new Dictionary<string, FieldDescriptor>( fieldCount );
for( int i = 0; i < fieldCount; i++ )
{
DataGridItemPropertyBase itemProperty = itemProperties[ i ];
fieldDescriptors[ itemProperty.Name ] = ItemsSourceHelper.CreateFieldFromDataGridItemProperty( itemProperty );
}
return fieldDescriptors;
}
public static void UpdateColumnsOnItemsPropertiesChanged(
DataGridControl dataGridControl,
ColumnCollection columns,
bool autoCreateForeignKeyConfigurations,
NotifyCollectionChangedEventArgs e,
DataGridItemPropertyCollection itemProperties )
{
if( dataGridControl == null )
return;
switch( e.Action )
{
case NotifyCollectionChangedAction.Add:
{
foreach( DataGridItemPropertyBase itemProperty in e.NewItems )
{
string name = itemProperty.Name;
if( columns[ name ] == null )
{
Column column = ItemsSourceHelper.CreateColumnFromItemsSourceField(
dataGridControl, dataGridControl.DefaultCellEditors,
ItemsSourceHelper.CreateFieldFromDataGridItemProperty( itemProperty ),
autoCreateForeignKeyConfigurations );
if( column != null )
{
columns.Add( column );
ItemsSourceHelper.ApplySettingsRepositoryToColumn( column );
}
}
}
}
break;
case NotifyCollectionChangedAction.Remove:
{
foreach( DataGridItemPropertyBase itemProperty in e.OldItems )
{
string name = itemProperty.Name;
Column column = columns[ name ] as Column;
if( ( column != null ) && ( column.IsAutoCreated ) )
{
columns.Remove( column );
}
}
break;
}
case NotifyCollectionChangedAction.Replace:
{
foreach( DataGridItemPropertyBase itemProperty in e.OldItems )
{
string name = itemProperty.Name;
Column column = columns[ name ] as Column;
if( ( column != null ) && ( column.IsAutoCreated ) )
{
columns.Remove( column );
}
}
foreach( DataGridItemPropertyBase itemProperty in e.NewItems )
{
string name = itemProperty.Name;
if( columns[ name ] == null )
{
Column column = ItemsSourceHelper.CreateColumnFromItemsSourceField(
dataGridControl, dataGridControl.DefaultCellEditors,
ItemsSourceHelper.CreateFieldFromDataGridItemProperty( itemProperty ),
autoCreateForeignKeyConfigurations );
if( column != null )
{
columns.Add( column );
ItemsSourceHelper.ApplySettingsRepositoryToColumn( column );
}
}
}
break;
}
case NotifyCollectionChangedAction.Reset:
{
for( int i = columns.Count - 1; i >= 0; i-- )
{
Column dataColumn = columns[ i ] as Column;
if( ( dataColumn != null ) && ( dataColumn.IsAutoCreated ) )
{
columns.Remove( dataColumn );
}
}
foreach( DataGridItemPropertyBase itemProperty in itemProperties )
{
string name = itemProperty.Name;
if( columns[ name ] == null )
{
Column column = ItemsSourceHelper.CreateColumnFromItemsSourceField(
dataGridControl, dataGridControl.DefaultCellEditors,
ItemsSourceHelper.CreateFieldFromDataGridItemProperty( itemProperty ),
autoCreateForeignKeyConfigurations );
if( column != null )
{
columns.Add( column );
ItemsSourceHelper.ApplySettingsRepositoryToColumn( column );
}
}
}
break;
}
//case NotifyCollectionChangedAction.Move:
default:
break;
}
}
private void SetupDefaultItemProperties()
{
m_itemProperties = new DataGridItemPropertyCollection();
m_itemProperties.ItemType = m_itemType;
// Listen for ItemProperties changes to be able to refresh when AutoFilterValues changes
m_itemProperties.CollectionChanged += this.ItemProperties_CollectionChanged;
m_itemProperties.FilterCriterionChanged += this.ItemProperties_FilterCriterionChanged;
// Calling GetDefaultItemProperties will also cache the result in m_defaultItemProperties
// if able to detect properties
List<DataGridItemPropertyBase> defaultItemProperties = this.GetDefaultItemProperties();
if( this.AutoCreateItemProperties )
{
// Add new auto created item properties
foreach( DataGridItemPropertyBase defaultProperty in defaultItemProperties )
{
this.AddValidItemProperty( defaultProperty );
}
}
if( ( m_itemProperties.DefaultItemProperties == null ) && ( m_defaultItemProperties != null ) )
m_itemProperties.DefaultItemProperties = new List<DataGridItemPropertyBase>( m_defaultItemProperties );
//no need to cycle through the content of the ItemProperties collection to update them since
//they originate from the default anyway.
}
internal override void SetUnspecifiedPropertiesValues( DataGridItemPropertyCollection itemPropertyCollection )
{
// ContainingCollection.ItemType and ContainingCollection.DefaultItemProperties can be null at first when this is
// the ItemProperties of a DetailGrid.
// the SetUnspecifiedPropertiesValues will be recall when both this.ItemType and this.DefaultItemProperties are affected.
if( itemPropertyCollection == null )
return;
DataGridItemProperty defaultItemProperty = null;
bool itemIsXceedDataRow = ( itemPropertyCollection.ItemType != null ) ? typeof( DataRow ).IsAssignableFrom( itemPropertyCollection.ItemType ) : false;
if( ( string.IsNullOrEmpty( this.ValueXPath ) )
&& ( string.IsNullOrEmpty( this.ValuePath ) )
&& ( this.PropertyDescriptor == null ) )
{
if( itemIsXceedDataRow )
{
this.PropertyDescriptor = new UnboundDataRowPropertyDescriptor( this.Name, this.DataType );
}
else
{
defaultItemProperty = itemPropertyCollection.FindDefaultItemProperty( this.Name ) as DataGridItemProperty;
if( defaultItemProperty == null )
{
if( this.Name == "." )
{
this.SetPropertyDescriptor( new SelfPropertyDescriptor( this.DataType ) );
this.SetValuePath( "." );
this.SetIsReadOnly( true );
this.SetOverrideReadOnlyForInsertion( false );
}
else if( itemPropertyCollection.DefaultItemProperties != null )
{
// I have to add this particular exception case to make sure that when the ItemProperty is "re-normalized" when the first DataGridCollectionView
// is created for it, then the ValuePath is still null or empty (allowing it to be re-normalized)
this.SetValuePath( this.Name );
}
}
else
{
this.SetPropertyDescriptor( defaultItemProperty.PropertyDescriptor );
this.SetValuePath( defaultItemProperty.ValuePath );
this.SetValueXPath( defaultItemProperty.ValueXPath );
}
}
}
if( this.DataType == null )
{
//only try to affect the DataType if the DefaultItemProperties were set. (will not be the case when XAML parsing DetailDescriptions)
if( itemPropertyCollection.DefaultItemProperties != null )
{
if( defaultItemProperty == null )
defaultItemProperty = itemPropertyCollection.FindDefaultItemProperty( this.Name ) as DataGridItemProperty;
if( defaultItemProperty == null )
{
throw new InvalidOperationException( "An attempt was made to add an item (" + this.Name + ") without specifying its data type." );
}
this.SetDataType( defaultItemProperty.DataType );
}
}
if( string.IsNullOrEmpty( this.Title ) )
{
if( itemIsXceedDataRow )
{
this.Title = this.Name;
}
else
{
if( defaultItemProperty == null )
defaultItemProperty = itemPropertyCollection.FindDefaultItemProperty( this.Name ) as DataGridItemProperty;
if( defaultItemProperty == null )
{
this.Title = this.Name;
}
else
{
this.Title = defaultItemProperty.Title;
}
}
}
if( !this.IsReadOnly )
{
if( defaultItemProperty == null )
defaultItemProperty = itemPropertyCollection.FindDefaultItemProperty( this.Name ) as DataGridItemProperty;
if( defaultItemProperty != null )
{
this.SetIsReadOnly( defaultItemProperty.IsReadOnly );
}
}
if( this.OverrideReadOnlyForInsertion == null )
{
//only try to affect the DataType if the DefaultItemProperties were set. (will not be the case when XAML parsing DetailDescriptions)
if( itemPropertyCollection.DefaultItemProperties != null )
{
if( defaultItemProperty == null )
defaultItemProperty = itemPropertyCollection.FindDefaultItemProperty( this.Name ) as DataGridItemProperty;
this.SetOverrideReadOnlyForInsertion( ( defaultItemProperty != null ) && ( defaultItemProperty.OverrideReadOnlyForInsertion.HasValue )
? defaultItemProperty.OverrideReadOnlyForInsertion.Value
: false );
}
}
if( ( !string.IsNullOrEmpty( this.ValueXPath ) ) && ( string.IsNullOrEmpty( this.ValuePath ) ) )
this.SetValuePath( "InnerText" );
bool foreignKeyDescriptionIsNull = ( this.ForeignKeyDescription == null );
bool foreignKeyDescriptionItemsSourceIsNull = false;
if( !foreignKeyDescriptionIsNull )
{
foreignKeyDescriptionItemsSourceIsNull = ( this.ForeignKeyDescription.ItemsSource == null );
}
// Update the ForeignKeyDescription if not set
if( foreignKeyDescriptionIsNull || foreignKeyDescriptionItemsSourceIsNull )
{
if( defaultItemProperty == null )
defaultItemProperty = itemPropertyCollection.FindDefaultItemProperty( this.Name ) as DataGridItemProperty;
if( ( defaultItemProperty != null ) && ( defaultItemProperty.ForeignKeyDescription != null ) )
{
if( foreignKeyDescriptionIsNull )
{
this.SetForeignKeyDescription( defaultItemProperty.ForeignKeyDescription );
}
else
{
if( foreignKeyDescriptionItemsSourceIsNull )
{
this.ForeignKeyDescription.ItemsSource = defaultItemProperty.ForeignKeyDescription.ItemsSource;
}
}
}
}
}
// If a DataGridCollectionViewBase is used, get the ItemProperties it defines
// to be able to retreive DataGridForeignKeyDescription for each of them
// to get the auto-detected ForeignKey ItemsSource (if any).
// If a DataGridCollectionViewBase is not used, the ItemsSource must be
// manually specified on each Column in order to correctly display/edit the Data
internal static void UpdateColumnsForeignKeyConfigurationsFromDataGridCollectionView(
Dictionary<string,ColumnBase> columns,
DataGridItemPropertyCollection itemProperties,
bool autoCreateForeignKeyConfigurations )
{
if( itemProperties == null )
return;
foreach( DataGridItemPropertyBase itemProperty in itemProperties )
{
DataGridForeignKeyDescription description = itemProperty.ForeignKeyDescription;
if( description == null )
continue;
ColumnBase column;
columns.TryGetValue( itemProperty.Name, out column );
ForeignKeyConfiguration.SynchronizeForeignKeyConfigurationFromForeignKeyDescription(
column as Column,
description,
autoCreateForeignKeyConfigurations );
}
}
internal override void SetUnspecifiedPropertiesValues( DataGridItemPropertyCollection itemPropertyCollection )
{
if( this.DataType == null )
{
throw new InvalidOperationException( "An attempt was made to add an item without specifying its data type." );
}
if( string.IsNullOrEmpty( this.Title ) )
{
this.Title = this.Name;
}
if( !this.OverrideReadOnlyForInsertion.HasValue )
{
this.OverrideReadOnlyForInsertion = false;
}
}
internal virtual void SetUnspecifiedPropertiesValues( DataGridItemPropertyCollection itemPropertyCollection )
{
}
/// <summary>
/// Finds property by name.
/// </summary>
/// <param name="name">Property name.</param>
/// <param name="properties">Properties collection.</param>
/// <returns>Property or null if property is not found.</returns>
private DataGridItemPropertyBase _FindItemProperty(string name,
DataGridItemPropertyCollection properties)
{
DataGridItemPropertyBase resultProp = null;
foreach (DataGridItemPropertyBase prop in properties)
{
if (prop.Name == name)
{
resultProp = prop;
break;
}
}
return resultProp;
}
public static void RemoveListener( DataGridItemPropertyCollection source, IWeakEventListener listener )
{
CurrentManager.ProtectedRemoveListener( source, listener );
}
