@ -1,6 +1,6 @@
// This source is subject to the Microsoft Public License (Ms-PL).
// Please see http://go.microsoft.com/fwlink/?LinkID=131993 for details.
// All other rights reserved.
// All other rights reserved.
using Avalonia.Collections ;
using Avalonia.Controls.Primitives ;
@ -92,7 +92,7 @@ namespace Avalonia.Controls
private ContentControl _ topRightCornerHeader ;
private Control _f rozenColumnScrollBarSpacer ;
// the sum of the widths in pixels of the scrolling columns preceding
// the sum of the widths in pixels of the scrolling columns preceding
// the first displayed scrolling column
private double _ horizontalOffset ;
@ -143,7 +143,7 @@ namespace Avalonia.Controls
private object _ uneditedValue ; // Represents the original current cell value at the time it enters editing mode.
private ICellEditBinding _ currentCellEditBinding ;
// An approximation of the sum of the heights in pixels of the scrolling rows preceding
// An approximation of the sum of the heights in pixels of the scrolling rows preceding
// the first displayed scrolling row. Since the scrolled off rows are discarded, the grid
// does not know their actual height. The heights used for the approximation are the ones
// set as the rows were scrolled off.
@ -162,7 +162,7 @@ namespace Avalonia.Controls
AvaloniaProperty . Register < DataGrid , bool > ( nameof ( CanUserReorderColumns ) ) ;
/// <summary>
/// Gets or sets a value that indicates whether the user can change
/// Gets or sets a value that indicates whether the user can change
/// the column display order by dragging column headers with the mouse.
/// </summary>
public bool CanUserReorderColumns
@ -247,8 +247,8 @@ namespace Avalonia.Controls
/// Gets or sets the <see cref="T:System.Windows.Media.Brush" /> that is used to paint the background of odd-numbered rows.
/// </summary>
/// <returns>
/// The brush that is used to paint the background of odd-numbered rows. The default is a
/// <see cref="T:System.Windows.Media.SolidColorBrush" /> with a
/// The brush that is used to paint the background of odd-numbered rows. The default is a
/// <see cref="T:System.Windows.Media.SolidColorBrush" /> with a
/// <see cref="P:System.Windows.Media.SolidColorBrush.Color" /> value of white (ARGB value #00FFFFFF).
/// </returns>
public IBrush AlternatingRowBackground
@ -379,8 +379,8 @@ namespace Avalonia.Controls
public bool IsValid
{
get { return _ isValid ; }
internal set
{
internal set
{
SetAndRaise ( IsValidProperty , ref _ isValid , value ) ;
PseudoClasses . Set ( ":invalid" , ! value ) ;
}
@ -398,7 +398,7 @@ namespace Avalonia.Controls
}
/// <summary>
/// Gets or sets the maximum width of columns in the <see cref="T:Avalonia.Controls.DataGrid" /> .
/// Gets or sets the maximum width of columns in the <see cref="T:Avalonia.Controls.DataGrid" /> .
/// </summary>
public double MaxColumnWidth
{
@ -418,7 +418,7 @@ namespace Avalonia.Controls
}
/// <summary>
/// Gets or sets the minimum width of columns in the <see cref="T:Avalonia.Controls.DataGrid" />.
/// Gets or sets the minimum width of columns in the <see cref="T:Avalonia.Controls.DataGrid" />.
/// </summary>
public double MinColumnWidth
{
@ -496,7 +496,7 @@ namespace Avalonia.Controls
AvaloniaProperty . Register < DataGrid , IBrush > ( nameof ( VerticalGridLinesBrush ) ) ;
/// <summary>
/// Gets or sets the <see cref="T:System.Windows.Media.Brush" /> that is used to paint grid lines separating columns.
/// Gets or sets the <see cref="T:System.Windows.Media.Brush" /> that is used to paint grid lines separating columns.
/// </summary>
public IBrush VerticalGridLinesBrush
{
@ -542,7 +542,7 @@ namespace Avalonia.Controls
/// </summary>
/// <returns>
/// The index of the current selection, or -1 if the selection is empty.
/// </returns>
/// </returns>
public int SelectedIndex
{
get { return _ selectedIndex ; }
@ -582,7 +582,7 @@ namespace Avalonia.Controls
AvaloniaProperty . Register < DataGrid , bool > ( nameof ( AutoGenerateColumns ) ) ;
/// <summary>
/// Gets or sets a value that indicates whether columns are created
/// Gets or sets a value that indicates whether columns are created
/// automatically when the <see cref="P:Avalonia.Controls.DataGrid.ItemsSource" /> property is set.
/// </summary>
public bool AutoGenerateColumns
@ -626,7 +626,7 @@ namespace Avalonia.Controls
AvaloniaProperty . Register < DataGrid , bool > ( nameof ( AreRowDetailsFrozen ) ) ;
/// <summary>
/// Gets or sets a value that indicates whether the row details sections remain
/// Gets or sets a value that indicates whether the row details sections remain
/// fixed at the width of the display area or can scroll horizontally.
/// </summary>
public bool AreRowDetailsFrozen
@ -881,7 +881,7 @@ namespace Avalonia.Controls
{
int index = ( int ) e . NewValue ;
// GetDataItem returns null if index is >= Count, we do not check newValue
// GetDataItem returns null if index is >= Count, we do not check newValue
// against Count here to avoid enumerating through an Enumerable twice
// Setting SelectedItem coerces the finally value of the SelectedIndex
object newSelectedItem = ( index < 0 ) ? null : DataConnection . GetDataItem ( index ) ;
@ -1168,14 +1168,14 @@ namespace Avalonia.Controls
}
/// <summary>
/// Occurs one time for each public, non-static property in the bound data type when the
/// <see cref="P:Avalonia.Controls.DataGrid.ItemsSource" /> property is changed and the
/// Occurs one time for each public, non-static property in the bound data type when the
/// <see cref="P:Avalonia.Controls.DataGrid.ItemsSource" /> property is changed and the
/// <see cref="P:Avalonia.Controls.DataGrid.AutoGenerateColumns" /> property is true.
/// </summary>
public event EventHandler < DataGridAutoGeneratingColumnEventArgs > AutoGeneratingColumn ;
/// <summary>
/// Occurs before a cell or row enters editing mode.
/// Occurs before a cell or row enters editing mode.
/// </summary>
public event EventHandler < DataGridBeginningEditEventArgs > BeginningEdit ;
@ -1195,7 +1195,7 @@ namespace Avalonia.Controls
public event EventHandler < DataGridCellPointerPressedEventArgs > CellPointerPressed ;
/// <summary>
/// Occurs when the <see cref="P:Avalonia.Controls.DataGridColumn.DisplayIndex" />
/// Occurs when the <see cref="P:Avalonia.Controls.DataGridColumn.DisplayIndex" />
/// property of a column changes.
/// </summary>
public event EventHandler < DataGridColumnEventArgs > ColumnDisplayIndexChanged ;
@ -1218,14 +1218,14 @@ namespace Avalonia.Controls
public event EventHandler < EventArgs > CurrentCellChanged ;
/// <summary>
/// Occurs after a <see cref="T:Avalonia.Controls.DataGridRow" />
/// Occurs after a <see cref="T:Avalonia.Controls.DataGridRow" />
/// is instantiated, so that you can customize it before it is used.
/// </summary>
public event EventHandler < DataGridRowEventArgs > LoadingRow ;
/// <summary>
/// Occurs when a cell in a <see cref="T:Avalonia.Controls.DataGridTemplateColumn" /> enters editing mode.
///
///
/// </summary>
public event EventHandler < DataGridPreparingCellForEditEventArgs > PreparingCellForEdit ;
@ -1243,7 +1243,7 @@ namespace Avalonia.Controls
RoutedEvent . Register < DataGrid , SelectionChangedEventArgs > ( nameof ( SelectionChanged ) , RoutingStrategies . Bubble ) ;
/// <summary>
/// Occurs when the <see cref="P:Avalonia.Controls.DataGrid.SelectedItem" /> or
/// Occurs when the <see cref="P:Avalonia.Controls.DataGrid.SelectedItem" /> or
/// <see cref="P:Avalonia.Controls.DataGrid.SelectedItems" /> property value changes.
/// </summary>
public event EventHandler < SelectionChangedEventArgs > SelectionChanged
@ -1258,19 +1258,19 @@ namespace Avalonia.Controls
public event EventHandler < DataGridColumnEventArgs > Sorting ;
/// <summary>
/// Occurs when a <see cref="T:Avalonia.Controls.DataGridRow" />
/// Occurs when a <see cref="T:Avalonia.Controls.DataGridRow" />
/// object becomes available for reuse.
/// </summary>
public event EventHandler < DataGridRowEventArgs > UnloadingRow ;
/// <summary>
/// Occurs when a new row details template is applied to a row, so that you can customize
/// Occurs when a new row details template is applied to a row, so that you can customize
/// the details section before it is used.
/// </summary>
public event EventHandler < DataGridRowDetailsEventArgs > LoadingRowDetails ;
/// <summary>
/// Occurs when the <see cref="P:Avalonia.Controls.DataGrid.RowDetailsVisibilityMode" />
/// Occurs when the <see cref="P:Avalonia.Controls.DataGrid.RowDetailsVisibilityMode" />
/// property value changes.
/// </summary>
public event EventHandler < DataGridRowDetailsEventArgs > RowDetailsVisibilityChanged ;
@ -1282,7 +1282,7 @@ namespace Avalonia.Controls
/// <summary>
/// Gets a collection that contains all the columns in the control.
/// </summary>
/// </summary>
public ObservableCollection < DataGridColumn > Columns
{
get
@ -1456,7 +1456,7 @@ namespace Avalonia.Controls
}
// Height currently available for cells this value is smaller. This height is reduced by the existence of ColumnHeaders
// or a horizontal scrollbar. Layout is asynchronous so changes to the ColumnHeaders or the horizontal scrollbar are
// or a horizontal scrollbar. Layout is asynchronous so changes to the ColumnHeaders or the horizontal scrollbar are
// not reflected immediately.
internal double CellsHeight
{
@ -1555,7 +1555,7 @@ namespace Avalonia.Controls
internal static double HorizontalGridLinesThickness = > DATAGRID_horizontalGridLinesThickness ;
// the sum of the widths in pixels of the scrolling columns preceding
// the sum of the widths in pixels of the scrolling columns preceding
// the first displayed scrolling column
internal double HorizontalOffset
{
@ -2083,20 +2083,20 @@ namespace Avalonia.Controls
}
/// <summary>
/// Measures the children of a <see cref="T:Avalonia.Controls.DataGridRow" /> to prepare for
/// arranging them during the
/// <see cref="M:Avalonia.Controls.DataGridRow.ArrangeOverride(System.Windows.Size)" /> pass.
/// Measures the children of a <see cref="T:Avalonia.Controls.DataGridRow" /> to prepare for
/// arranging them during the
/// <see cref="M:Avalonia.Controls.DataGridRow.ArrangeOverride(System.Windows.Size)" /> pass.
/// </summary>
/// <returns>
/// The size that the <see cref="T:Avalonia.Controls.DataGridRow" /> determines it needs during layout, based on its calculations of child object allocated sizes.
/// </returns>
/// <param name="availableSize">
/// The available size that this element can give to child elements. Indicates an upper limit that
/// The available size that this element can give to child elements. Indicates an upper limit that
/// child elements should not exceed.
/// </param>
protected override Size MeasureOverride ( Size availableSize )
{
// Delay layout until after the initial measure to avoid invalid calculations when the
// Delay layout until after the initial measure to avoid invalid calculations when the
// DataGrid is not part of the visual tree
if ( ! _ measured )
{
@ -2285,6 +2285,17 @@ namespace Avalonia.Controls
}
}
/// <summary>
/// Comparator class so we can sort list by the display index
/// </summary>
public class DisplayIndexComparer : IComparer < DataGridColumn >
{
int IComparer < DataGridColumn > . Compare ( DataGridColumn x , DataGridColumn y )
{
return ( x . DisplayIndexWithFiller < y . DisplayIndexWithFiller ) ? - 1 : 1 ;
}
}
/// <summary>
/// Builds the visual tree for the column header when a new template is applied.
/// </summary>
@ -2309,8 +2320,11 @@ namespace Avalonia.Controls
ColumnsInternal . FillerColumn . IsRepresented = false ;
}
_ columnHeadersPresenter . OwningGrid = this ;
// Columns were added before before our Template was applied, add the ColumnHeaders now
foreach ( DataGridColumn column in ColumnsItemsInternal )
// Columns were added before our Template was applied, add the ColumnHeaders now
List < DataGridColumn > sortedInternal = new List < DataGridColumn > ( ColumnsItemsInternal ) ;
sortedInternal . Sort ( new DisplayIndexComparer ( ) ) ;
foreach ( DataGridColumn column in sortedInternal )
{
InsertDisplayedColumnHeader ( column ) ;
}
@ -3006,7 +3020,7 @@ namespace Avalonia.Controls
/// If the editing element has focus, this method will set focus to the DataGrid itself
/// in order to force the element to lose focus. It will then wait for the editing element's
/// LostFocus event, at which point it will perform the specified action.
///
///
/// NOTE: It is important to understand that the specified action will be performed when the editing
/// element loses focus only if this method returns true. If it returns false, then the action
/// will not be performed later on, and should instead be performed by the caller, if necessary.
@ -3065,7 +3079,7 @@ namespace Avalonia.Controls
{
if ( ! _ scrollingByHeight )
{
// Update layout when RowDetails are expanded or collapsed, just updating the vertical scroll bar is not enough
// Update layout when RowDetails are expanded or collapsed, just updating the vertical scroll bar is not enough
// since rows could be added or removed
InvalidateMeasure ( ) ;
}
@ -3278,7 +3292,7 @@ namespace Avalonia.Controls
{
// Current cell was reset because the commit deleted row(s).
// Since the user wants to change the current cell, we don't
// want to end up with no current cell. We pick the last row
// want to end up with no current cell. We pick the last row
// in the grid which may be the 'new row'.
int lastSlot = LastVisibleSlot ;
if ( forCurrentCellChange & &
@ -3336,7 +3350,7 @@ namespace Avalonia.Controls
if ( _ ignoreNextScrollBarsLayout )
{
_ ignoreNextScrollBarsLayout = false ;
//
//
}
@ -3393,7 +3407,7 @@ namespace Avalonia.Controls
}
// Now cellsWidth is the width potentially available for displaying data cells.
// Now cellsHeight is the height potentially available for displaying data cells.
// Now cellsHeight is the height potentially available for displaying data cells.
bool needHorizScrollbar = false ;
bool needVertScrollbar = false ;
@ -3418,7 +3432,7 @@ namespace Avalonia.Controls
Debug . Assert ( cellsHeight > = 0 ) ;
needHorizScrollbarWithoutVertScrollbar = needHorizScrollbar = true ;
if ( vertScrollBarWidth > 0 & &
if ( vertScrollBarWidth > 0 & &
allowVertScrollbar & & ( MathUtilities . LessThanOrClose ( totalVisibleWidth - cellsWidth , vertScrollBarWidth ) | |
MathUtilities . LessThanOrClose ( cellsWidth - totalVisibleFrozenWidth , vertScrollBarWidth ) ) )
{
@ -3458,7 +3472,7 @@ namespace Avalonia.Controls
// we compute the number of visible columns only after we set up the vertical scroll bar.
ComputeDisplayedColumns ( ) ;
if ( ( vertScrollBarWidth > 0 | | horizScrollBarHeight > 0 ) & &
if ( ( vertScrollBarWidth > 0 | | horizScrollBarHeight > 0 ) & &
allowHorizScrollbar & &
needVertScrollbar & & ! needHorizScrollbar & &
MathUtilities . GreaterThan ( totalVisibleWidth , cellsWidth ) & &
@ -3963,7 +3977,8 @@ namespace Avalonia.Controls
{
var errorList =
binding . ValidationErrors
. SelectMany ( ex = > ValidationUtil . UnpackException ( ex ) )
. SelectMany ( ValidationUtil . UnpackException )
. Select ( ValidationUtil . UnpackDataValidationException )
. ToList ( ) ;
DataValidationErrors . SetErrors ( editingElement , errorList ) ;
@ -4124,7 +4139,7 @@ namespace Avalonia.Controls
}
/// <summary>
/// Exits editing mode without trying to commit or revert the editing, and
/// Exits editing mode without trying to commit or revert the editing, and
/// without repopulating the edited row's cell.
/// </summary>
//TODO TabStop
@ -5103,9 +5118,9 @@ namespace Avalonia.Controls
{
if ( ctrl | | _ editingColumnIndex = = - 1 | | IsReadOnly )
{
//Go to the next/previous control on the page when
//Go to the next/previous control on the page when
// - Ctrl key is used
// - Potential current cell is not edited, or the datagrid is read-only.
// - Potential current cell is not edited, or the datagrid is read-only.
return false ;
}
@ -5516,11 +5531,11 @@ namespace Avalonia.Controls
// v---v
//|<|_____|###|>|
// ^ ^
// min max
// min max
// we want to make the relative size of the thumb reflect the relative size of the viewing area
// viewportSize / (max + viewportSize) = cellsWidth / max
// -> viewportSize = max * cellsWidth / (max - cellsWidth)
// -> viewportSize = max * cellsWidth / (max - cellsWidth)
// always zero
_ hScrollBar . Minimum = 0 ;
@ -5572,7 +5587,7 @@ namespace Avalonia.Controls
_ hScrollBar . Maximum = 0 ;
if ( _ hScrollBar . IsVisible )
{
// This will trigger a call to this method via Cells_SizeChanged for
// This will trigger a call to this method via Cells_SizeChanged for
// which no processing is needed.
_ hScrollBar . IsVisible = false ;
_ ignoreNextScrollBarsLayout = true ;
@ -5591,14 +5606,14 @@ namespace Avalonia.Controls
// v---v
//|<|_____|###|>|
// ^ ^
// min max
// min max
// we want to make the relative size of the thumb reflect the relative size of the viewing area
// viewportSize / (max + viewportSize) = cellsWidth / max
// -> viewportSize = max * cellsHeight / (totalVisibleHeight - cellsHeight)
// -> = max * cellsHeight / (totalVisibleHeight - cellsHeight)
// -> = max * cellsHeight / max
// -> = cellsHeight
// -> = cellsHeight
// always zero
_ vScrollBar . Minimum = 0 ;
@ -5621,7 +5636,7 @@ namespace Avalonia.Controls
if ( ! _ vScrollBar . IsVisible )
{
// This will trigger a call to this method via Cells_SizeChanged for
// This will trigger a call to this method via Cells_SizeChanged for
// which no processing is needed.
_ vScrollBar . IsVisible = true ;
if ( _ vScrollBar . DesiredSize . Width = = 0 )
@ -5637,7 +5652,7 @@ namespace Avalonia.Controls
_ vScrollBar . Maximum = 0 ;
if ( _ vScrollBar . IsVisible )
{
// This will trigger a call to this method via Cells_SizeChanged for
// This will trigger a call to this method via Cells_SizeChanged for
// which no processing is needed.
_ vScrollBar . IsVisible = false ;
_ ignoreNextScrollBarsLayout = true ;
@ -5660,8 +5675,8 @@ namespace Avalonia.Controls
Debug . Assert ( slot > = 0 ) ;
// Before changing selection, check if the current cell needs to be committed, and
// check if the current row needs to be committed. If any of those two operations are required and fail,
// do not change selection, and do not change current cell.
// check if the current row needs to be committed. If any of those two operations are required and fail,
// do not change selection, and do not change current cell.
bool wasInEdit = EditingColumnIndex ! = - 1 ;
Dan Walmsley
5 years ago
GitHub