internal SelectionChangedEventArgs GetSelectionChangedEventArgs()
{
List <object> addedSelectedItems = new List <object>();
List <object> removedSelectedItems = new List <object>();
// Compare the old selected indexes with the current selection to determine which items
// have been added and removed since the last time this method was called
foreach (int newSlot in _selectedSlotsTable.GetIndexes())
{
object newItem = this.OwningGrid.DataConnection.GetDataItem(this.OwningGrid.RowIndexFromSlot(newSlot));
if (_oldSelectedSlotsTable.Contains(newSlot))
{
_oldSelectedSlotsTable.RemoveValue(newSlot);
_oldSelectedItemsCache.Remove(newItem);
}
else
{
addedSelectedItems.Add(newItem);
}
}
foreach (object oldItem in _oldSelectedItemsCache)
{
removedSelectedItems.Add(oldItem);
}
// The current selection becomes the old selection
_oldSelectedSlotsTable = _selectedSlotsTable.Copy();
_oldSelectedItemsCache = new List <object>(_selectedItemsCache);
return(new SelectionChangedEventArgs(removedSelectedItems, addedSelectedItems));
}
public DataGridSelectedItemsCollection(DataGrid owningGrid)
{
this.OwningGrid = owningGrid;
_oldSelectedItemsCache = new List <object>();
_oldSelectedSlotsTable = new IndexToValueTable <bool>();
_selectedItemsCache = new List <object>();
_selectedSlotsTable = new IndexToValueTable <bool>();
}
public DataGridSelectedItemsCollection(DataGrid owningGrid)
{
this.OwningGrid = owningGrid;
this._oldSelectedItemsCache = new List<object>();
this._oldSelectedSlotsTable = new IndexToValueTable<bool>();
this._selectedItemsCache = new List<object>();
this._selectedSlotsTable = new IndexToValueTable<bool>();
}
public WrapLayout(IHierarchyAdapter adapter, double defaultItemLength, double defaultItemOppositeLength)
{
this.DefaultItemLength = defaultItemLength;
this.DefaultItemOppositeLength = defaultItemOppositeLength;
this.hierarchyAdapter = adapter;
this.averageItemLength = this.DefaultItemLength;
this.LayoutStrategies.Add(new ItemsLayoutStrategy());
this.groupHeadersTable = new IndexToValueTable <GroupInfo>();
}
public CompactLayout(IHierarchyAdapter adapter, double defaultItemLength)
{
if (adapter == null)
{
throw new ArgumentNullException("adapter", "Adapter cannot be null.");
}
this.DefaultItemLength = defaultItemLength;
this.hierarchyAdapter = adapter;
this.averageItemLength = defaultItemLength;
this.collapsedSlotsTable = new IndexToValueTable <bool>();
this.groupHeadersTable = new IndexToValueTable <GroupInfo>();
this.LayoutStrategies.Add(new ItemsLayoutStrategy());
}
public LayoutRenderInfoState(IndexToValueTable <bool> collapsedSlots)
{
this.collapsedSlots = collapsedSlots;
}
public SelectedItemsEnumerator(DataGrid owningGrid, IndexToValueTable<bool> selectedItemsTable)
{
Debug.Assert(owningGrid != null);
Debug.Assert(selectedItemsTable != null);
this.OwningGrid = owningGrid;
this._rowIndexesEnumerator = selectedItemsTable.GetIndexesEnumerator();
}
public DataGridSelectedItemsCollection(DataGrid owningGrid)
{
this.OwningGrid = owningGrid;
this._selectedItemsTable = new IndexToValueTable<bool>();
}
internal SelectionChangedEventArgs GetSelectionChangedEventArgs()
{
List<object> addedSelectedItems = new List<object>();
List<object> removedSelectedItems = new List<object>();
// Compare the old selected indexes with the current selection to determine which items
// have been added and removed since the last time this method was called
foreach (int newSlot in this._selectedSlotsTable.GetIndexes())
{
object newItem = this.OwningGrid.DataConnection.GetDataItem(this.OwningGrid.RowIndexFromSlot(newSlot));
if (this._oldSelectedSlotsTable.Contains(newSlot))
{
this._oldSelectedSlotsTable.RemoveValue(newSlot);
this._oldSelectedItemsCache.Remove(newItem);
}
else
{
addedSelectedItems.Add(newItem);
}
}
foreach (object oldItem in this._oldSelectedItemsCache)
{
removedSelectedItems.Add(oldItem);
}
// The current selection becomes the old selection
this._oldSelectedSlotsTable = this._selectedSlotsTable.Copy();
this._oldSelectedItemsCache = new List<object>(this._selectedItemsCache);
return new SelectionChangedEventArgs(removedSelectedItems, addedSelectedItems);
}
public DataGrid()
{
this.TabNavigation = KeyboardNavigationMode.Once;
this.KeyDown += new KeyEventHandler(DataGrid_KeyDown);
this.KeyUp += new KeyEventHandler(DataGrid_KeyUp);
this.GotFocus += new RoutedEventHandler(DataGrid_GotFocus);
this.LostFocus += new RoutedEventHandler(DataGrid_LostFocus);
this.IsEnabledChanged += new DependencyPropertyChangedEventHandler(DataGrid_IsEnabledChanged);
this._loadedRows = new List<DataGridRow>();
this._lostFocusActions = new Queue<Action>();
this._selectedItems = new DataGridSelectedItemsCollection(this);
this._rowGroupHeaderStyles = new ObservableCollection<Style>();
this._rowGroupHeaderStyles.CollectionChanged += RowGroupHeaderStyles_CollectionChanged;
this._rowGroupHeaderStylesOld = new List<Style>();
this.RowGroupHeadersTable = new IndexToValueTable<DataGridRowGroupInfo>();
this._validationItems = new Dictionary<INotifyDataErrorInfo, string>();
this._validationResults = new List<ValidationResult>();
this._bindingValidationResults = new List<ValidationResult>();
this._propertyValidationResults = new List<ValidationResult>();
this._indeiValidationResults = new List<ValidationResult>();
this.DisplayData = new DataGridDisplayData(this);
this.ColumnsInternal = CreateColumnsInstance();
this.RowHeightEstimate = DATAGRID_defaultRowHeight;
this.RowDetailsHeightEstimate = 0;
this._rowHeaderDesiredWidth = 0;
this.DataConnection = new DataGridDataConnection(this);
this._showDetailsTable = new IndexToValueTable<Visibility>();
this._collapsedSlotsTable = new IndexToValueTable<Visibility>();
this.AnchorSlot = -1;
this._lastEstimatedRow = -1;
this._editingColumnIndex = -1;
this._mouseOverRowIndex = null;
this.CurrentCellCoordinates = new DataGridCellCoordinates(-1, -1);
this.RowGroupHeaderHeightEstimate = DATAGRID_defaultRowHeight;
DefaultStyleKey = typeof(DataGrid);
}
public DataGrid()
{
TabNavigation = KeyboardNavigationMode.Once;
KeyDown += DataGrid_KeyDown;
KeyUp += DataGrid_KeyUp;
GotFocus += DataGrid_GotFocus;
LostFocus += DataGrid_LostFocus;
IsEnabledChanged += DataGrid_IsEnabledChanged;
_loadedRows = new List<DataGridRow>();
_selectedItems = new DataGridSelectedItemsCollection(this);
_rowGroupHeaderStyles = new ObservableCollection<Style>();
_rowGroupHeaderStyles.CollectionChanged += RowGroupHeaderStyles_CollectionChanged;
_rowGroupHeaderStylesOld = new List<Style>();
RowGroupHeadersTable = new IndexToValueTable<DataGridRowGroupInfo>();
_validationResults = new List<ValidationResult>();
DisplayData = new DataGridDisplayData(this);
ColumnsInternal = CreateColumnsInstance();
RowHeightEstimate = DATAGRID_defaultRowHeight;
RowDetailsHeightEstimate = 0;
_rowHeaderDesiredWidth = 0;
DataConnection = new DataGridDataConnection(this);
_showDetailsTable = new IndexToValueTable<Visibility>();
_collapsedSlotsTable = new IndexToValueTable<Visibility>();
AnchorSlot = -1;
_lastEstimatedRow = -1;
_editingColumnIndex = -1;
_mouseOverRowIndex = null;
CurrentCellCoordinates = new DataGridCellCoordinates(-1, -1);
RowGroupHeaderHeightEstimate = DATAGRID_defaultRowHeight;
DefaultStyleKey = typeof(DataGrid);
}
public DataGrid()
{
this.TabNavigation = KeyboardNavigationMode.Once;
this.IsTabStop = true;
this.KeyDown += new KeyEventHandler(DataGrid_KeyDown);
this.KeyUp += new KeyEventHandler(DataGrid_KeyUp);
this.GotFocus += new RoutedEventHandler(DataGrid_GotFocus);
this.LostFocus += new RoutedEventHandler(DataGrid_LostFocus);
this.SetValueNoCallback(GridlinesVisibilityProperty, DataGridGridlines.All);
this._prefetchedRows = new List<DataGridRow>();
this._preparedRows = new List<DataGridRow>();
this._recyclableRows = new List<DataGridRow>();
this._editingBoundCells = new List<DataGridCell>(2);
this.SelectedItemsInternal = new DataGridSelectedItemsCollection(this);
this.ColumnsInternal = CreateColumnsInstance();
this.SetValueNoCallback(ColumnWidthProperty, DATAGRID_defaultColumnWidth);
this.DisplayData = new DataGridDisplayData();
this.SetValueNoCallback(RowHeightProperty, DATAGRID_defaultRowHeight);
this._minColumnWidth = DATAGRID_defaultMinColumnWidth;
this._minRowHeight = DataGridRow.DATAGRIDROW_minMinHeight;
this.DataConnection = new DataGridDataConnection(this);
this._editingRowLocation = DataGridEditingRowLocation.Inline;
this._newRowLocation = DataGridNewRowLocation.Inline;
this._showDetailsTable = new IndexToValueTable<Visibility>();
this.SetValueNoCallback(RowDetailsVisibilityProperty, DATAGRID_defaultRowDetailsVisibility);
this.AnchorRowIndex = -1;
this._editingColumnIndex = -1;
this._mouseOverRowIndex = null;
this.CurrentCellCoordinates = new DataGridCellCoordinates(-1, -1);
this.SetValueNoCallback(HeadersVisibilityProperty, DATAGRID_defaultHeadersVisibility);
this.SetValueNoCallback(HorizontalScrollBarVisibilityProperty, DATAGRID_defaultHorizontalScrollBarVisibility);
this.SetValueNoCallback(VerticalScrollBarVisibilityProperty, DATAGRID_defaultVerticalScrollBarVisibility);
this.SetValueNoCallback(ColumnHeadersHeightProperty, DATAGRID_defaultColumnHeadersHeight);
this.SetValueNoCallback(RowHeadersWidthProperty, DATAGRID_defaultRowHeadersWidth);
this.SetValueNoCallback(SelectionModeProperty, DATAGRID_defaultSelectionMode);
//
this.CanUserResizeColumns = DATAGRID_defaultCanUserResizeColumns;
}
private static IEnumerable<object> GetSelectedItems(DataGrid owningGrid, IndexToValueTable<bool> selectedItemsTable)
{
Debug.Assert(owningGrid != null);
Debug.Assert(owningGrid.DataConnection != null);
Debug.Assert(selectedItemsTable != null);
DataGridDataConnection dataConnection = owningGrid.DataConnection;
foreach (int rowIndex in selectedItemsTable.GetIndexes())
{
Debug.Assert(rowIndex > -1);
yield return dataConnection.GetDataItem(rowIndex);
}
}
public DataGrid()
{
this.TabNavigation = KeyboardNavigationMode.Once;
this.KeyDown += new KeyEventHandler(DataGrid_KeyDown);
this.KeyUp += new KeyEventHandler(DataGrid_KeyUp);
this.GotFocus += new RoutedEventHandler(DataGrid_GotFocus);
this.LostFocus += new RoutedEventHandler(DataGrid_LostFocus);
this._loadedRows = new List<DataGridRow>();
this._editingBoundCells = new List<DataGridCell>(2);
this._selectedItems = new DataGridSelectedItemsCollection(this);
this.SetValueNoCallback(SelectedIndexProperty, -1);
this.DisplayData = new DataGridDisplayData();
this.ColumnsInternal = CreateColumnsInstance();
this.SetValueNoCallback(ColumnWidthProperty, DataGridLength.Auto);
this.SetValueNoCallback(MaxColumnWidthProperty, DATAGRID_defaultMaxColumnWidth);
this.SetValueNoCallback(MinColumnWidthProperty, DATAGRID_defaultMinColumnWidth);
this.SetValueNoCallback(RowHeightProperty, double.NaN);
this.RowHeightEstimate = DATAGRID_defaultRowHeight;
this.RowDetailsHeightEstimate = 0;
this._rowHeaderDesiredWidth = 0;
this.DataConnection = new DataGridDataConnection(this);
//this._newRowLocation = DataGridNewRowLocation.Inline;
this._showDetailsTable = new IndexToValueTable<Visibility>();
this.AnchorRowIndex = -1;
this._lastEstimatedRow = -1;
this._editingColumnIndex = -1;
this._mouseOverRowIndex = null;
this.CurrentCellCoordinates = new DataGridCellCoordinates(-1, -1);
this.SetValueNoCallback(RowHeaderWidthProperty, double.NaN);
this.SetValueNoCallback(ColumnHeaderHeightProperty, double.NaN);
this._addedSelectedItems = new List<object>();
this._removedSelectedItems = new List<object>();
DefaultStyleKey = typeof(DataGrid);
}
