internal virtual void OnItemPropertiesCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case NotifyCollectionChangedAction.Replace:
Debug.Assert(false, "The replace of an ItemProperty is not supported.");
break;
case NotifyCollectionChangedAction.Remove:
int oldItemsCount = (e.OldItems != null)
? e.OldItems.Count
: 0;
for (int i = 0; i < oldItemsCount; i++)
{
DataGridItemPropertyBase dataGridItemProperty = e.OldItems[i] as DataGridItemPropertyBase;
Debug.Assert(dataGridItemProperty != null);
this.UnregisterAutoFilterValuesChangedEvent(dataGridItemProperty.Name);
}
break;
case NotifyCollectionChangedAction.Reset:
this.UnregisterAllAutoFilterValuesChangedEvent();
break;
}
}
internal static DataGridItemPropertyRoute Combine(DataGridItemPropertyBase itemProperty, DataGridItemPropertyRoute ancestors)
{
if (itemProperty == null)
{
return(ancestors);
}
if (ancestors == null)
{
return(DataGridItemPropertyRoute.Create(itemProperty));
}
var collection = itemProperty.ContainingCollection;
if (collection == null)
{
throw new InvalidOperationException();
}
if (collection.Owner != ancestors.Current)
{
throw new InvalidOperationException();
}
return(new DataGridItemPropertyRoute(itemProperty, ancestors));
}
private void OnAutoFilterValuesCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (this.AutoFilterMode == AutoFilterMode.None)
{
return;
}
ObservableHashList hashList = sender as ObservableHashList;
if (hashList == null)
{
return;
}
string fieldName = m_registeredAutoFilterValuesToFieldNames[hashList];
if (string.IsNullOrEmpty(fieldName))
{
return;
}
DataGridItemPropertyBase itemProperty = this.ItemProperties[fieldName];
if (itemProperty == null)
{
return;
}
this.DetailDescriptionAutoFilterValuesChanged(new AutoFilterValuesChangedEventArgs(this, itemProperty, hashList, e));
}
protected DataGridItemPropertyBase(DataGridItemPropertyBase template)
: this()
{
m_name = template.m_name;
m_dataType = template.m_dataType;
m_title = template.m_title;
m_synonym = template.m_synonym;
m_flags[DataGridItemPropertyBaseFlags.IsReadOnly] = template.m_flags[DataGridItemPropertyBaseFlags.IsReadOnly];
m_flags[DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertionSet] = template.m_flags[DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertionSet];
m_flags[DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertion] = template.m_flags[DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertion];
m_flags[DataGridItemPropertyBaseFlags.IsASubRelationshipSet] = template.m_flags[DataGridItemPropertyBaseFlags.IsASubRelationshipSet];
m_flags[DataGridItemPropertyBaseFlags.IsASubRelationship] = template.m_flags[DataGridItemPropertyBaseFlags.IsASubRelationship];
m_flags[DataGridItemPropertyBaseFlags.IsBrowsable] = template.m_flags[DataGridItemPropertyBaseFlags.IsBrowsable];
m_flags[DataGridItemPropertyBaseFlags.CalculateDistinctValues] = template.m_flags[DataGridItemPropertyBaseFlags.CalculateDistinctValues];
m_converter = template.m_converter;
m_converterCulture = template.m_converterCulture;
m_converterParameter = template.m_converterParameter;
this.FilterCriterion = template.m_filterCriterion;
m_foreignKeyDescription = template.m_foreignKeyDescription;
m_maxDistinctValues = template.m_maxDistinctValues;
m_sortComparer = template.m_sortComparer;
this.DistinctValuesEqualityComparer = template.DistinctValuesEqualityComparer;
this.DistinctValuesSortComparer = template.DistinctValuesSortComparer;
// FilterCriterionChanged is not cloned since only used after the clone occurs
this.PropertyChanged += template.PropertyChanged;
this.QueryDistinctValue += template.m_queryDistinctValue;
}
public SortDescriptionInfo(
DataGridItemPropertyBase property,
ListSortDirection direction )
{
m_property = property;
m_direction = direction;
}
private void UnmapItemProperties(DataGridItemPropertyBase masterItemProperty, DataGridItemPropertyBase detailItemProperty, bool recursive)
{
if ((masterItemProperty == null) || (detailItemProperty == null))
{
return;
}
DataGridItemPropertyBase mappedItemProperty;
if (!m_masterToDetail.TryGetValue(masterItemProperty, out mappedItemProperty) || (mappedItemProperty != detailItemProperty))
{
throw new InvalidOperationException();
}
if (!m_detailToMaster.TryGetValue(detailItemProperty, out mappedItemProperty) || (mappedItemProperty != masterItemProperty))
{
throw new InvalidOperationException();
}
m_masterToDetail.Remove(masterItemProperty);
m_detailToMaster.Remove(detailItemProperty);
this.OnMappingChanged();
if (recursive)
{
this.UnmapMasterItemProperties(masterItemProperty.ItemPropertiesInternal);
this.UnmapDetailItemProperties(detailItemProperty.ItemPropertiesInternal);
}
}
public SortDescriptionInfo(
DataGridItemPropertyBase property,
ListSortDirection direction)
{
m_property = property;
m_direction = direction;
}
protected DataGridItemPropertyBase( DataGridItemPropertyBase template )
: this()
{
m_name = template.m_name;
m_dataType = template.m_dataType;
m_title = template.m_title;
m_synonym = template.m_synonym;
m_flags[ DataGridItemPropertyBaseFlags.IsReadOnly ] = template.m_flags[ DataGridItemPropertyBaseFlags.IsReadOnly ];
m_flags[ DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertionSet ] = template.m_flags[ DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertionSet ];
m_flags[ DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertion ] = template.m_flags[ DataGridItemPropertyBaseFlags.IsOverrideReadOnlyForInsertion ];
m_flags[ DataGridItemPropertyBaseFlags.IsASubRelationshipSet ] = template.m_flags[ DataGridItemPropertyBaseFlags.IsASubRelationshipSet ];
m_flags[ DataGridItemPropertyBaseFlags.IsASubRelationship ] = template.m_flags[ DataGridItemPropertyBaseFlags.IsASubRelationship ];
m_flags[ DataGridItemPropertyBaseFlags.IsBrowsable ] = template.m_flags[ DataGridItemPropertyBaseFlags.IsBrowsable ];
m_flags[ DataGridItemPropertyBaseFlags.CalculateDistinctValues ] = template.m_flags[ DataGridItemPropertyBaseFlags.CalculateDistinctValues ];
m_converter = template.m_converter;
m_converterCulture = template.m_converterCulture;
m_converterParameter = template.m_converterParameter;
this.FilterCriterion = template.m_filterCriterion;
m_foreignKeyDescription = template.m_foreignKeyDescription;
m_maxDistinctValues = template.m_maxDistinctValues;
m_sortComparer = template.m_sortComparer;
this.DistinctValuesEqualityComparer = template.DistinctValuesEqualityComparer;
this.DistinctValuesSortComparer = template.DistinctValuesSortComparer;
// FilterCriterionChanged is not cloned since only used after the clone occurs
this.PropertyChanged += template.PropertyChanged;
this.QueryDistinctValue += template.m_queryDistinctValue;
}
internal object[] GetItemPropertyDistinctValues(DataGridItemPropertyBase dataGridItemProperty)
{
if (m_queryableSource == null)
{
return(new object[0]);
}
IQueryable distinctQueryable = m_queryableSource.GetSubGroupsAndCountsQueryable(dataGridItemProperty.Name, false, ListSortDirection.Ascending);
List <object> distinctValuesAndCounts = new List <object>();
try
{
System.Collections.IEnumerator enumerator = distinctQueryable.GetEnumerator();
while (enumerator.MoveNext())
{
QueryableExtensions.IQueryableGroupNameCountPair current = enumerator.Current as QueryableExtensions.IQueryableGroupNameCountPair;
if (current != null)
{
distinctValuesAndCounts.Add(current.GroupName);
}
}
return(distinctValuesAndCounts.ToArray());
}
catch
{
// TimeOut exception on the connection or other.
return(new object[0]);
}
}
private DataGridItemPropertyRoute(DataGridItemPropertyBase itemProperty, DataGridItemPropertyRoute parent)
{
Debug.Assert(itemProperty != null);
m_itemProperty = itemProperty;
m_parent = parent;
}
internal override void OnEditBegun(DataGridItemEventArgs e)
{
object item = e.Item;
DataGridPageManagerBase pageManager = this.RootGroup.GetVirtualPageManager();
if (!pageManager.IsItemDirty(item))
{
// First time we enter edit on this item.
DataGridItemPropertyCollection itemProperties = this.ItemProperties;
int count = itemProperties.Count;
string[] propertyNames = new string[count];
object[] cachedValues = new object[count];
for (int i = 0; i < count; i++)
{
DataGridItemPropertyBase itemProperty = itemProperties[i];
propertyNames[i] = itemProperty.Name;
cachedValues[i] = itemProperty.GetValue(item);
}
// Cache the values of the never edited before row. This will help the developer find the corresponding row
// in the source when times comes to commit the changes to the data source.
pageManager.SetCachedValuesForItem(item, propertyNames, cachedValues);
}
base.OnEditBegun(e);
}
private void MapItemProperties(DataGridItemPropertyBase masterItemProperty, DataGridItemPropertyBase detailItemProperty)
{
if ((masterItemProperty == null) || (detailItemProperty == null))
{
return;
}
DataGridItemPropertyBase mappedItemProperty;
if (m_masterToDetail.TryGetValue(masterItemProperty, out mappedItemProperty))
{
if (mappedItemProperty == detailItemProperty)
{
return;
}
this.UnmapMasterItemProperty(masterItemProperty);
}
this.UnmapDetailItemProperty(detailItemProperty);
m_masterToDetail[masterItemProperty] = detailItemProperty;
m_detailToMaster[detailItemProperty] = masterItemProperty;
this.OnMappingChanged();
this.MapItemProperties(masterItemProperty.ItemPropertiesInternal, detailItemProperty.ItemPropertiesInternal);
}
internal AutoFilterValuesChangedEventArgs(
DataGridDetailDescription detailDescription,
DataGridItemPropertyBase itemProperty,
IList autoFilterValues,
NotifyCollectionChangedEventArgs collectionChangedEvent)
{
if (itemProperty == null)
{
throw new ArgumentNullException("itemProperty");
}
if (autoFilterValues == null)
{
throw new ArgumentNullException("autoFilterValues");
}
if (collectionChangedEvent == null)
{
throw new ArgumentNullException("collectionChangedEvent");
}
this.DetailDescription = detailDescription;
this.ItemProperty = itemProperty;
this.CollectionChangedEventArgs = collectionChangedEvent;
this.AutoFilterValues = autoFilterValues;
}
internal InitializeItemPropertyEventArgs(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
throw new ArgumentNullException("itemProperty");
}
m_itemProperty = itemProperty;
}
internal void PushDescendant(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
throw new ArgumentNullException("itemProperty");
}
this.PushDescendant(PropertyRouteBuilder.ToSegment(itemProperty));
}
private void MapDetailItemProperty(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
return;
}
var collection = itemProperty.ContainingCollection;
if (collection == null)
{
return;
}
DataGridItemPropertyCollection mappedItemProperties;
DataGridItemPropertyBase mappedItemProperty;
var owner = collection.Owner;
if (owner == null)
{
Debug.Assert(collection == m_detailItemProperties);
if (collection != m_detailItemProperties)
{
return;
}
mappedItemProperties = m_masterItemProperties;
}
else
{
if (!m_detailToMaster.TryGetValue(owner, out mappedItemProperty))
{
return;
}
mappedItemProperties = mappedItemProperty.ItemPropertiesInternal;
}
if (mappedItemProperties == null)
{
return;
}
mappedItemProperty = (!string.IsNullOrEmpty(itemProperty.Synonym)) ? mappedItemProperties[itemProperty.Synonym] : null;
if (mappedItemProperty != null)
{
this.MapItemProperties(mappedItemProperty, itemProperty);
}
else
{
this.UnmapDetailItemProperty(itemProperty);
}
}
private void MapMasterItemProperty(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
return;
}
var collection = itemProperty.ContainingCollection;
if (collection == null)
{
return;
}
DataGridItemPropertyCollection mappedItemProperties;
DataGridItemPropertyBase mappedItemProperty;
var owner = collection.Owner;
if (owner == null)
{
Debug.Assert(collection == m_masterItemProperties);
if (collection != m_masterItemProperties)
{
return;
}
mappedItemProperties = m_detailItemProperties;
}
else
{
if (!m_masterToDetail.TryGetValue(owner, out mappedItemProperty))
{
return;
}
mappedItemProperties = mappedItemProperty.ItemPropertiesInternal;
}
if (mappedItemProperties == null)
{
return;
}
mappedItemProperty = mappedItemProperties.GetForSynonym(itemProperty.Name);
if (mappedItemProperty != null)
{
this.MapItemProperties(itemProperty, mappedItemProperty);
}
else
{
this.UnmapMasterItemProperty(itemProperty);
}
}
public override object GetValue(object component)
{
DataGridItemPropertyBase dataGridItemProperty = this.DataGridItemProperty;
if (dataGridItemProperty == null)
{
return(null);
}
return(dataGridItemProperty.GetValue(base.GetValue(component)));
}
internal override void RefreshDistinctValuesForField(DataGridItemPropertyBase dataGridItemProperty)
{
if (dataGridItemProperty == null)
{
return;
}
if (dataGridItemProperty.CalculateDistinctValues == false)
{
return;
}
// List containing current column distinct values
HashSet <object> currentColumnDistinctValues = new HashSet <object>();
ReadOnlyObservableHashList readOnlyColumnDistinctValues = null;
// If the key is not set in DistinctValues yet, do not calculate distinct values for this field
if (!(( DistinctValuesDictionary )this.DistinctValues).InternalTryGetValue(dataGridItemProperty.Name, out readOnlyColumnDistinctValues))
{
return;
}
ObservableHashList columnDistinctValues = readOnlyColumnDistinctValues.InnerObservableHashList;
// We use the DistinctValuesSortComparer if present, else the SortComparer for the DataGridItemProperty, else,
// the Comparer used is the one of the base class.
IComparer distinctValuesSortComparer = dataGridItemProperty.DistinctValuesSortComparer;
if (distinctValuesSortComparer == null)
{
distinctValuesSortComparer = dataGridItemProperty.SortComparer;
}
using (columnDistinctValues.DeferINotifyCollectionChanged())
{
DataGridVirtualizingQueryableCollectionViewGroupRoot rootGroup = this.RootGroup as DataGridVirtualizingQueryableCollectionViewGroupRoot;
Debug.Assert(rootGroup != null);
object[] distinctValues = rootGroup.GetItemPropertyDistinctValues(dataGridItemProperty);
foreach (object distinctValue in distinctValues)
{
// Compute current value to be able to remove unused values
currentColumnDistinctValues.Add(distinctValue);
}
DataGridCollectionViewBase.RemoveUnusedDistinctValues(
distinctValuesSortComparer, currentColumnDistinctValues, columnDistinctValues, null);
}
}
private void UnregisterItemProperty(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
return;
}
if (!m_listeningToPropertyChanged.Remove(itemProperty))
{
return;
}
this.UnregisterItemProperties(itemProperty.ItemPropertiesInternal);
PropertyChangedEventManager.RemoveListener(itemProperty, this, string.Empty);
}
public override void SetValue(object component, object value)
{
if (component is EmptyDataItem)
{
throw new InvalidOperationException("An attempt was made to set a value on an empty data item.");
}
DataGridItemPropertyBase dataGridItemProperty = this.DataGridItemProperty;
if (dataGridItemProperty == null)
{
return;
}
dataGridItemProperty.SetValue(component, value);
}
private void OnItemPropertyPropertyChanged(DataGridItemPropertyBase itemProperty, PropertyChangedEventArgs e)
{
var rootCollection = ItemsSourceHelper.GetRootCollection(itemProperty);
if (rootCollection == null)
{
return;
}
using (this.DeferMappingChanged())
{
if (string.IsNullOrEmpty(e.PropertyName) || (e.PropertyName == DataGridItemPropertyBase.SynonymPropertyName))
{
if (rootCollection == m_detailItemProperties)
{
this.MapDetailItemProperty(itemProperty);
}
}
if (string.IsNullOrEmpty(e.PropertyName) || (e.PropertyName == DataGridItemPropertyBase.ItemPropertiesInternalPropertyName))
{
var itemProperties = itemProperty.ItemPropertiesInternal;
if (itemProperties != null)
{
this.UnregisterItemProperties(itemProperties);
this.RegisterItemProperties(itemProperties);
if (rootCollection == m_masterItemProperties)
{
foreach (var childItemProperty in itemProperties)
{
this.MapMasterItemProperty(childItemProperty);
}
}
else if (rootCollection == m_detailItemProperties)
{
foreach (var childItemProperty in itemProperties)
{
this.MapDetailItemProperty(childItemProperty);
}
}
}
}
}
}
private static PropertyRouteSegment ToSegment(DataGridItemPropertyBase itemProperty)
{
Debug.Assert(itemProperty != null);
var route = PropertyRouteParser.Parse(itemProperty.Name);
if (route == null)
{
throw new ArgumentException("Unexpected DataGridItemPropertyBase.Name property value.", "itemProperty");
}
if (route.Parent == null)
{
return(route.Current);
}
return(new PropertyRouteSegment(PropertyRouteSegmentType.Other, itemProperty.Name));
}
private void UnmapDetailItemProperty(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
return;
}
DataGridItemPropertyBase mappedItemProperty;
if (!m_detailToMaster.TryGetValue(itemProperty, out mappedItemProperty))
{
return;
}
Debug.Assert(mappedItemProperty != null);
this.UnmapItemProperties(mappedItemProperty, itemProperty, true);
}
internal static DataGridItemPropertyRoute Create(DataGridItemPropertyBase itemProperty)
{
if (itemProperty == null)
{
return(null);
}
var collection = itemProperty.ContainingCollection;
if (collection == null)
{
return(new DataGridItemPropertyRoute(itemProperty));
}
return(new DataGridItemPropertyRoute(
itemProperty,
DataGridItemPropertyRoute.Create(collection.Owner)));
}
internal override void RefreshDistinctValuesForField( DataGridItemPropertyBase dataGridItemProperty )
{
if( dataGridItemProperty == null )
return;
if( dataGridItemProperty.CalculateDistinctValues == false )
return;
// List containing current column distinct values
HashSet<object> currentColumnDistinctValues = new HashSet<object>();
ReadOnlyObservableHashList readOnlyColumnDistinctValues = null;
// If the key is not set in DistinctValues yet, do not calculate distinct values for this field
if( !( ( DistinctValuesDictionary )this.DistinctValues ).InternalTryGetValue( dataGridItemProperty.Name, out readOnlyColumnDistinctValues ) )
return;
ObservableHashList columnDistinctValues = readOnlyColumnDistinctValues.InnerObservableHashList;
// We use the DistinctValuesSortComparer if present, else the SortComparer for the DataGridItemProperty, else,
// the Comparer used is the one of the base class.
IComparer distinctValuesSortComparer = dataGridItemProperty.DistinctValuesSortComparer;
if( distinctValuesSortComparer == null )
distinctValuesSortComparer = dataGridItemProperty.SortComparer;
using( columnDistinctValues.DeferINotifyCollectionChanged() )
{
DataGridVirtualizingQueryableCollectionViewGroupRoot rootGroup = this.RootGroup as DataGridVirtualizingQueryableCollectionViewGroupRoot;
Debug.Assert( rootGroup != null );
object[] distinctValues = rootGroup.GetItemPropertyDistinctValues( dataGridItemProperty );
foreach( object distinctValue in distinctValues )
{
// Compute current value to be able to remove unused values
currentColumnDistinctValues.Add( distinctValue );
}
DataGridCollectionViewBase.RemoveUnusedDistinctValues(
distinctValuesSortComparer, currentColumnDistinctValues, columnDistinctValues, null );
}
}
internal AutoFilterValuesChangedEventArgs(
DataGridDetailDescription detailDescription,
DataGridItemPropertyBase itemProperty,
IList autoFilterValues,
NotifyCollectionChangedEventArgs collectionChangedEvent )
{
if( itemProperty == null )
throw new ArgumentNullException( "itemProperty" );
if( autoFilterValues == null )
throw new ArgumentNullException( "autoFilterValues" );
if( collectionChangedEvent == null )
throw new ArgumentNullException( "collectionChangedEvent" );
this.DetailDescription = detailDescription;
this.ItemProperty = itemProperty;
this.CollectionChangedEventArgs = collectionChangedEvent;
this.AutoFilterValues = autoFilterValues;
}
protected DataGridItemPropertyBase( DataGridItemPropertyBase template )
{
m_name = template.m_name;
m_dataType = template.m_dataType;
m_title = template.m_title;
m_readOnly = template.m_readOnly;
m_overrideReadOnlyForInsertion = template.m_overrideReadOnlyForInsertion;
m_isASubRelationship = template.m_isASubRelationship;
m_browsable = template.m_browsable;
m_calculateDistinctValues = template.m_calculateDistinctValues;
m_converter = template.m_converter;
m_converterCulture = template.m_converterCulture;
m_converterParameter = template.m_converterParameter;
this.FilterCriterion = template.m_filterCriterion;
m_foreignKeyDescription = template.m_foreignKeyDescription;
m_maxDistinctValues = template.m_maxDistinctValues;
m_sortComparer = template.m_sortComparer;
this.DistinctValuesEqualityComparer = template.DistinctValuesEqualityComparer;
this.DistinctValuesSortComparer = template.DistinctValuesSortComparer;
// FilterCriterionChanged is not cloned since only used after the clone occurs
this.PropertyChanged += template.PropertyChanged;
this.QueryDistinctValue += template.m_queryDistinctValue;
}
protected DataGridItemPropertyBase(DataGridItemPropertyBase template)
{
m_name = template.m_name;
m_dataType = template.m_dataType;
m_title = template.m_title;
m_readOnly = template.m_readOnly;
m_overrideReadOnlyForInsertion = template.m_overrideReadOnlyForInsertion;
m_isASubRelationship = template.m_isASubRelationship;
m_browsable = template.m_browsable;
m_calculateDistinctValues = template.m_calculateDistinctValues;
m_converter = template.m_converter;
m_converterCulture = template.m_converterCulture;
m_converterParameter = template.m_converterParameter;
this.FilterCriterion = template.m_filterCriterion;
m_foreignKeyDescription = template.m_foreignKeyDescription;
m_maxDistinctValues = template.m_maxDistinctValues;
m_sortComparer = template.m_sortComparer;
this.DistinctValuesEqualityComparer = template.DistinctValuesEqualityComparer;
this.DistinctValuesSortComparer = template.DistinctValuesSortComparer;
// FilterCriterionChanged is not cloned since only used after the clone occurs
this.PropertyChanged += template.PropertyChanged;
this.QueryDistinctValue += template.m_queryDistinctValue;
}
private void AddFilteredItemProperty( DataGridItemPropertyBase itemProperty )
{
m_filteredItemProperties.Add( itemProperty );
}
internal abstract void RefreshDistinctValuesForField( DataGridItemPropertyBase dataGridItemProperty );
public PropertyDescriptorFromItemPropertyBase( DataGridItemPropertyBase dataGridItemProperty )
: base( dataGridItemProperty.Name )
{
m_dataGridItemProperty = new WeakReference( dataGridItemProperty );
m_propertyType = dataGridItemProperty.DataType;
}
internal QueryAutoFilterDistinctValuesEventArgs(DataGridItemPropertyBase itemProperty)
{
m_itemProperty = itemProperty;
m_distinctValues = new List <object>();
}
internal QueryAutoFilterDistinctValuesEventArgs( DataGridItemPropertyBase itemProperty )
{
m_itemProperty = itemProperty;
m_distinctValues = new List<object>();
}
private DataGridItemPropertyRoute(DataGridItemPropertyBase itemProperty)
: this(itemProperty, null)
{
}
internal bool TryGetDetailItemProperty(DataGridItemPropertyBase masterItemProperty, out DataGridItemPropertyBase detailItemProperty)
{
return(DataGridItemPropertyMap.TryGetTargetItemProperty(m_masterToDetail, masterItemProperty, out detailItemProperty));
}
public int Compare(RawItem xRawItem, RawItem yRawItem)
{
if (xRawItem == null)
{
if (yRawItem == null)
{
return(0);
}
else
{
return(-1);
}
}
else
{
if (yRawItem == null)
{
return(1);
}
}
ListSortDirection lastSortDirection = ListSortDirection.Ascending;
SortDescriptionCollection sortDescriptions = m_collectionView.SortDescriptions;
int sortDescriptionCount = sortDescriptions.Count;
if (sortDescriptionCount > 0)
{
int result;
DataGridItemPropertyCollection itemProperties = m_collectionView.ItemProperties;
for (int i = 0; i < sortDescriptionCount; i++)
{
SortDescription sortDescription = sortDescriptions[i];
lastSortDirection = sortDescription.Direction;
DataGridItemPropertyBase dataProperty = itemProperties[sortDescription.PropertyName];
if (dataProperty == null)
{
continue;
}
ISupportInitialize supportInitialize = dataProperty as ISupportInitialize;
object xData = null;
object yData = null;
if (supportInitialize != null)
{
supportInitialize.BeginInit();
}
try
{
xData = dataProperty.GetValue(xRawItem.DataItem);
yData = dataProperty.GetValue(yRawItem.DataItem);
}
finally
{
if (supportInitialize != null)
{
supportInitialize.EndInit();
}
}
IComparer sortComparer = dataProperty.SortComparer;
if (sortComparer != null)
{
result = sortComparer.Compare(xData, yData);
}
else
{
result = ObjectDataStore.CompareData(xData, yData);
}
if (result != 0)
{
if (lastSortDirection == ListSortDirection.Descending)
{
result = -result;
}
return(result);
}
}
}
if (lastSortDirection == ListSortDirection.Descending)
{
return(yRawItem.Index - xRawItem.Index);
}
return(xRawItem.Index - yRawItem.Index);
}
private static bool TryGetTargetItemProperty(Dictionary <DataGridItemPropertyBase, DataGridItemPropertyBase> collection, DataGridItemPropertyBase sourceItemProperty, out DataGridItemPropertyBase targetItemProperty)
{
if ((collection != null) && (sourceItemProperty != null) && collection.TryGetValue(sourceItemProperty, out targetItemProperty))
{
return(true);
}
targetItemProperty = default(DataGridItemPropertyBase);
return(false);
}
private void AddValidItemProperty( DataGridItemPropertyBase itemProperty )
{
if( !itemProperty.Browsable )
return;
if( itemProperty.IsASubRelationship )
return;
if( m_itemProperties[ itemProperty.Name ] != null )
return;
m_itemProperties.Add( itemProperty );
}
public PropertyDescriptorFromItemPropertyBase(DataGridItemPropertyBase dataGridItemProperty)
: base(dataGridItemProperty.Name)
{
m_dataGridItemProperty = new WeakReference(dataGridItemProperty);
m_propertyType = dataGridItemProperty.DataType;
}
public static FieldDescriptor CreateFieldFromDataGridItemProperty( DataGridItemPropertyBase itemProperty )
{
DataGridItemPropertyBase.PropertyDescriptorFromItemPropertyBase propertyDescriptor =
itemProperty.GetPropertyDescriptorForBinding();
string name = propertyDescriptor.Name;
Type type = propertyDescriptor.PropertyType;
// If an ItemProperty is in the public ItemProperties of the collection view,
// we always want to consider that property is not a detail and browsable.
return new FieldDescriptor( name,
propertyDescriptor.DisplayName,
propertyDescriptor.PropertyType,
propertyDescriptor,
null,
null,
itemProperty.IsReadOnly,
itemProperty.OverrideReadOnlyForInsertion.GetValueOrDefault( false ),
false,
true,
false,
itemProperty is DataGridUnboundItemProperty,
itemProperty.ForeignKeyDescription );
}
internal object[] GetItemPropertyDistinctValues( DataGridItemPropertyBase dataGridItemProperty )
{
if( m_queryableSource == null )
return new object[ 0 ];
IQueryable distinctQueryable = m_queryableSource.GetSubGroupsAndCountsQueryable( dataGridItemProperty.Name, false, ListSortDirection.Ascending );
List<object> distinctValuesAndCounts = new List<object>();
try
{
System.Collections.IEnumerator enumerator = distinctQueryable.GetEnumerator();
while( enumerator.MoveNext() )
{
QueryableExtensions.IQueryableGroupNameCountPair current = enumerator.Current as QueryableExtensions.IQueryableGroupNameCountPair;
if( current != null )
distinctValuesAndCounts.Add( current.GroupName );
}
return distinctValuesAndCounts.ToArray();
}
catch
{
// TimeOut exception on the connection or other.
return new object[ 0 ];
}
}