Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridRow.cs / 1305376 / DataGridRow.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Windows.Forms {
using System.Runtime.Remoting;
using System.Runtime.Versioning;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Imaging;
using System.Security.Permissions;
using Microsoft.Win32;
using System.Collections;
///
/// Encapsulates the painting logic for a new row added to a
///
///
internal abstract class DataGridRow : MarshalByRefObject {
internal protected int number; // row number
private bool selected;
private int height;
// protected DataRow dataRow;
private IntPtr tooltipID = new IntPtr(-1);
private string tooltip = String.Empty;
AccessibleObject accessibleObject;
// for accessibility...
//
// internal DataGrid dataGrid;
// will need this for the painting information ( row header color )
//
protected DataGridTableStyle dgTable;
// we will be mapping only the black color to
// the HeaderForeColor
//
private static ColorMap[] colorMap = new ColorMap[] {new ColorMap()};
// bitmaps
//
private static Bitmap rightArrow = null;
private static Bitmap leftArrow = null;
private static Bitmap errorBmp = null;
private static Bitmap pencilBmp = null;
private static Bitmap starBmp = null;
protected const int xOffset = 3;
protected const int yOffset = 2;
///
/// Initializes a new instance of a
///
[
SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors") // This class and its derived classes are internal.
// So this is not a security back door.
]
public DataGridRow(DataGrid dataGrid, DataGridTableStyle dgTable, int rowNumber) {
if (dataGrid == null || dgTable.DataGrid == null)
throw new ArgumentNullException("dataGrid");
if (rowNumber < 0)
throw new ArgumentException(SR.GetString(SR.DataGridRowRowNumber), "rowNumber");
// this.dataGrid = dataGrid;
this.number = rowNumber;
// map the black color in the pictures to the DataGrid's HeaderForeColor
//
colorMap[0].OldColor = Color.Black;
colorMap[0].NewColor = dgTable.HeaderForeColor;
this.dgTable = dgTable;
height = MinimumRowHeight(dgTable);
}
public AccessibleObject AccessibleObject {
get {
if (accessibleObject == null) {
accessibleObject = CreateAccessibleObject();
}
return accessibleObject;
}
}
protected virtual AccessibleObject CreateAccessibleObject() {
return new DataGridRowAccessibleObject(this);
}
internal protected virtual int MinimumRowHeight(DataGridTableStyle dgTable) {
return MinimumRowHeight(dgTable.GridColumnStyles);
}
internal protected virtual int MinimumRowHeight(GridColumnStylesCollection columns) {
int h = dgTable.IsDefault ? this.DataGrid.PreferredRowHeight : dgTable.PreferredRowHeight;
try {
if (this.dgTable.DataGrid.DataSource != null) {
int nCols = columns.Count;
for (int i = 0; i < nCols; ++i) {
// if (columns[i].Visible && columns[i].PropertyDescriptor != null)
if (columns[i].PropertyDescriptor != null)
h = Math.Max(h, columns[i].GetMinimumHeight());
}
}
}
catch {
}
return h;
}
// =-----------------------------------------------------------------
// = Properties
// =-----------------------------------------------------------------
///
/// Gets the
///
public DataGrid DataGrid {
get {
return this.dgTable.DataGrid;
}
}
internal DataGridTableStyle DataGridTableStyle {
get {
return this.dgTable;
}
set {
dgTable = value;
}
}
/*
public DataGridTable DataGridTable {
get {
return dgTable;
}
}
*/
/*
public DataRow DataRow {
get {
return dataRow;
}
}
*/
///
/// Gets or sets the height of the row.
///
public virtual int Height {
get {
return height;
}
set {
// the height of the row should be at least 0.
// this way, if the row has a relationship list and the user resizes the row such that
// the new height does not accomodate the height of the relationship list
// the row will at least show the relationship list ( and not paint on the portion of the row above this one )
height = Math.Max(0, value);
// when we resize the row, or when we set the PreferredRowHeigth on the
// DataGridTableStyle, we change the height of the Row, which will cause to invalidate,
// then the grid itself will do another invalidate call.
this.dgTable.DataGrid.OnRowHeightChanged(this);
}
}
///
/// Gets the row's number.
///
public int RowNumber {
get {
return this.number;
}
}
///
/// Gets or sets a value indicating whether the row is selected.
///
public virtual bool Selected {
get {
return selected;
}
set {
selected = value;
InvalidateRow();
}
}
// =------------------------------------------------------------------
// = Methods
// =-----------------------------------------------------------------
///
/// Gets the bitmap associated with the row.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetBitmap(string bitmapName) {
Bitmap b = null;
try {
b = new Bitmap(typeof(DataGridCaption), bitmapName);
b.MakeTransparent();
}
catch (Exception e) {
Debug.Fail("Failed to load bitmap: " + bitmapName, e.ToString());
throw e;
}
return b;
}
///
/// When overridden in a derived class, gets the
///
public virtual Rectangle GetCellBounds(int col) {
int firstVisibleCol = this.dgTable.DataGrid.FirstVisibleColumn;
int cx = 0;
Rectangle cellBounds = new Rectangle();
GridColumnStylesCollection columns = this.dgTable.GridColumnStyles;
if (columns != null) {
for (int i = firstVisibleCol; i < col; i++)
if (columns[i].PropertyDescriptor != null)
cx += columns[i].Width;
int borderWidth = this.dgTable.GridLineWidth;
cellBounds = new Rectangle(cx,
0,
columns[col].Width - borderWidth,
Height - borderWidth);
}
return cellBounds;
}
///
/// When overridden in a derived class, gets the
///
public virtual Rectangle GetNonScrollableArea() {
return Rectangle.Empty;
}
///
/// Gets or sets the bitmap displayed in the row header of a new row.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetStarBitmap() {
if (starBmp == null)
starBmp = GetBitmap("DataGridRow.star.bmp");
return starBmp;
}
///
/// Gets or sets the bitmap displayed in the row header that indicates a row can
/// be edited.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetPencilBitmap() {
if (pencilBmp == null)
pencilBmp = GetBitmap("DataGridRow.pencil.bmp");
return pencilBmp;
}
///
/// Gets or sets the bitmap displayed on a row with an error.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetErrorBitmap() {
if (errorBmp == null)
errorBmp = GetBitmap("DataGridRow.error.bmp");
errorBmp.MakeTransparent();
return errorBmp;
}
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetLeftArrowBitmap() {
if (leftArrow == null)
leftArrow = GetBitmap("DataGridRow.left.bmp");
return leftArrow;
}
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetRightArrowBitmap() {
if (rightArrow == null)
rightArrow = GetBitmap("DataGridRow.right.bmp");
return rightArrow;
}
public virtual void InvalidateRow() {
this.dgTable.DataGrid.InvalidateRow(number);
}
public virtual void InvalidateRowRect(Rectangle r) {
this.dgTable.DataGrid.InvalidateRowRect(number, r);
}
///
/// When overridden in a derived class, notifies the grid that an edit will
/// occur.
///
public virtual void OnEdit() {
}
///
/// When overridden in a derived class, called by the
///
public virtual bool OnKeyPress(Keys keyData) {
int currentColIndex = this.dgTable.DataGrid.CurrentCell.ColumnNumber;
GridColumnStylesCollection columns = this.dgTable.GridColumnStyles;
if (columns != null && currentColIndex >= 0 && currentColIndex < columns.Count) {
DataGridColumnStyle currentColumn = columns[currentColIndex];
if (currentColumn.KeyPress(this.RowNumber, keyData)) {
return true;
}
}
return false;
}
///
/// Called by the
///
public virtual bool OnMouseDown(int x, int y, Rectangle rowHeaders)
{
return OnMouseDown(x,y,rowHeaders, false);
}
///
/// When overridden in a derived class, is called by the
///
public virtual bool OnMouseDown(int x, int y, Rectangle rowHeaders, bool alignToRight) {
// if we call base.OnMouseDown, then the row could not use this
// mouse click at all. in that case LoseChildFocus, so the edit control
// will become visible
LoseChildFocus(rowHeaders, alignToRight);
// we did not use this click at all.
return false;
}
///
///
public virtual bool OnMouseMove(int x, int y, Rectangle rowHeaders) {
return false;
}
///
/// When overridden in a derived class, is called by the
///
public virtual bool OnMouseMove(int x, int y, Rectangle rowHeaders, bool alignToRight) {
return false;
}
///
///
public virtual void OnMouseLeft(Rectangle rowHeaders, bool alignToRight) {
}
public virtual void OnMouseLeft() {
}
///
/// When overridden in a derived class, causes the RowEnter event to occur.
///
public virtual void OnRowEnter() {}
public virtual void OnRowLeave() {}
// processes the Tab Key
// returns TRUE if the TAB key is processed
internal abstract bool ProcessTabKey(Keys keyData, Rectangle rowHeaders, bool alignToRight);
// tells the dataGridRow that it lost the focus
internal abstract void LoseChildFocus(Rectangle rowHeaders, bool alignToRight);
///
/// Paints the row.
///
public abstract int Paint(Graphics g,
Rectangle dataBounds,
Rectangle rowBounds,
int firstVisibleColumn,
int numVisibleColumns);
public abstract int Paint(Graphics g,
Rectangle dataBounds,
Rectangle rowBounds,
int firstVisibleColumn,
int numVisibleColumns,
bool alignToRight);
///
/// Draws a border on the bottom DataGrid.GridLineWidth pixels
/// of the bounding rectangle passed in.
///
protected virtual void PaintBottomBorder(Graphics g, Rectangle bounds, int dataWidth)
{
PaintBottomBorder(g, bounds, dataWidth, this.dgTable.GridLineWidth, false);
}
protected virtual void PaintBottomBorder(Graphics g, Rectangle bounds, int dataWidth, int borderWidth, bool alignToRight) {
// paint bottom border
Rectangle bottomBorder = new Rectangle(alignToRight ? bounds.Right - dataWidth : bounds.X,
bounds.Bottom - borderWidth,
dataWidth,
borderWidth);
g.FillRectangle(this.dgTable.IsDefault ? this.DataGrid.GridLineBrush : this.dgTable.GridLineBrush, bottomBorder);
// paint any exposed region to the right
if (dataWidth < bounds.Width) {
g.FillRectangle(this.dgTable.DataGrid.BackgroundBrush,
alignToRight ? bounds.X: bottomBorder.Right,
bottomBorder.Y,
bounds.Width - bottomBorder.Width,
borderWidth);
}
}
///
/// Paints the row.
///
public virtual int PaintData(Graphics g,
Rectangle bounds,
int firstVisibleColumn,
int columnCount)
{
return PaintData(g, bounds, firstVisibleColumn, columnCount, false);
}
public virtual int PaintData(Graphics g,
Rectangle bounds,
int firstVisibleColumn,
int columnCount,
bool alignToRight) {
Debug.WriteLineIf(CompModSwitches.DGRowPaint.TraceVerbose, "Painting DataGridAddNewRow: bounds = " + bounds.ToString());
Rectangle cellBounds = bounds;
int bWidth = this.dgTable.IsDefault ? this.DataGrid.GridLineWidth : this.dgTable.GridLineWidth;
int cx = 0;
DataGridCell current = this.dgTable.DataGrid.CurrentCell;
GridColumnStylesCollection columns = dgTable.GridColumnStyles;
int nCols = columns.Count;
for (int col = firstVisibleColumn; col < nCols; ++col) {
if (cx > bounds.Width)
break;
// if (!columns[col].Visible || columns[col].PropertyDescriptor == null)
if (columns[col].PropertyDescriptor == null || columns[col].Width <= 0)
continue;
cellBounds.Width = columns[col].Width - bWidth;
if (alignToRight)
cellBounds.X = bounds.Right - cx - cellBounds.Width;
else
cellBounds.X = bounds.X + cx;
// Paint the data with the the DataGridColumn
Brush backBr = BackBrushForDataPaint(ref current, columns[col], col);
Brush foreBrush = ForeBrushForDataPaint(ref current, columns[col], col);
PaintCellContents(g,
cellBounds,
columns[col],
backBr,
foreBrush,
alignToRight);
// Paint the border to the right of each cell
if (bWidth > 0) {
g.FillRectangle(this.dgTable.IsDefault ? this.DataGrid.GridLineBrush : this.dgTable.GridLineBrush,
alignToRight ? cellBounds.X - bWidth : cellBounds.Right,
cellBounds.Y,
bWidth,
cellBounds.Height);
}
cx += cellBounds.Width + bWidth;
}
// Paint any exposed area to the right ( or left ) of the data cell area
if (cx < bounds.Width) {
g.FillRectangle(this.dgTable.DataGrid.BackgroundBrush,
alignToRight ? bounds.X : bounds.X + cx,
bounds.Y,
bounds.Width - cx,
bounds.Height);
}
return cx;
}
protected virtual void PaintCellContents(Graphics g, Rectangle cellBounds, DataGridColumnStyle column,
Brush backBr, Brush foreBrush)
{
PaintCellContents(g, cellBounds, column, backBr, foreBrush, false);
}
protected virtual void PaintCellContents(Graphics g, Rectangle cellBounds, DataGridColumnStyle column,
Brush backBr, Brush foreBrush, bool alignToRight) {
g.FillRectangle(backBr, cellBounds);
}
//
// This function will do the following: if paintIcon is set to true, then
// will draw the image on the RowHeader. if paintIcon is set to false,
// then this function will fill the rectangle on which otherwise will
// have been drawn the image
//
// will return the rectangle that includes the Icon
//
protected Rectangle PaintIcon(Graphics g, Rectangle visualBounds, bool paintIcon, bool alignToRight, Bitmap bmp) {
return PaintIcon(g, visualBounds, paintIcon, alignToRight, bmp,
this.dgTable.IsDefault ? this.DataGrid.HeaderBackBrush : this.dgTable.HeaderBackBrush);
}
protected Rectangle PaintIcon(Graphics g, Rectangle visualBounds, bool paintIcon, bool alignToRight, Bitmap bmp, Brush backBrush) {
Size bmpSize = bmp.Size;
Rectangle bmpRect = new Rectangle(alignToRight ? visualBounds.Right - xOffset - bmpSize.Width : visualBounds.X + xOffset,
visualBounds.Y + yOffset,
bmpSize.Width,
bmpSize.Height);
g.FillRectangle(backBrush, visualBounds);
if (paintIcon)
{
colorMap[0].NewColor = this.dgTable.IsDefault ? this.DataGrid.HeaderForeColor : this.dgTable.HeaderForeColor;
colorMap[0].OldColor = Color.Black;
ImageAttributes attr = new ImageAttributes();
attr.SetRemapTable(colorMap, ColorAdjustType.Bitmap);
g.DrawImage(bmp, bmpRect, 0, 0, bmpRect.Width, bmpRect.Height,GraphicsUnit.Pixel, attr);
// g.DrawImage(bmp, bmpRect);
attr.Dispose();
}
return bmpRect;
}
// assume that the row is not aligned to right, and that the row is not dirty
public virtual void PaintHeader(Graphics g, Rectangle visualBounds) {
PaintHeader(g, visualBounds, false);
}
// assume that the row is not dirty
public virtual void PaintHeader(Graphics g, Rectangle visualBounds, bool alignToRight) {
PaintHeader(g,visualBounds, alignToRight, false);
}
public virtual void PaintHeader(Graphics g, Rectangle visualBounds, bool alignToRight, bool rowIsDirty) {
Rectangle bounds = visualBounds;
// paint the first part of the row header: the Arror or Pencil/Star
Bitmap bmp;
if (this is DataGridAddNewRow)
{
bmp = GetStarBitmap();
lock (bmp) {
bounds.X += PaintIcon(g, bounds, true, alignToRight, bmp).Width + xOffset;
}
return;
}
else if (rowIsDirty)
{
bmp = GetPencilBitmap();
lock (bmp) {
bounds.X += PaintIcon(g, bounds, RowNumber == this.DataGrid.CurrentCell.RowNumber, alignToRight, bmp).Width + xOffset;
}
}
else
{
bmp = alignToRight ? GetLeftArrowBitmap() : GetRightArrowBitmap();
lock (bmp) {
bounds.X += PaintIcon(g, bounds, RowNumber == this.DataGrid.CurrentCell.RowNumber, alignToRight, bmp).Width + xOffset;
}
}
// Paint the error icon
//
object errorInfo = DataGrid.ListManager[this.number];
if (!(errorInfo is IDataErrorInfo))
return;
string errString = ((IDataErrorInfo) errorInfo).Error;
if (errString == null)
errString = String.Empty;
if (tooltip != errString) {
if (!String.IsNullOrEmpty(tooltip)) {
DataGrid.ToolTipProvider.RemoveToolTip(tooltipID);
tooltip = String.Empty;
tooltipID = new IntPtr(-1);
}
}
if (String.IsNullOrEmpty(errString))
return;
// we now have an error string: paint the errorIcon and add the tooltip
Rectangle errRect;
bmp = GetErrorBitmap();
lock (bmp) {
errRect = PaintIcon(g, bounds, true, alignToRight, bmp);
}
bounds.X += errRect.Width + xOffset;
tooltip = errString;
tooltipID = (IntPtr)((int)DataGrid.ToolTipId++);
DataGrid.ToolTipProvider.AddToolTip(tooltip, tooltipID, errRect);
}
protected Brush GetBackBrush() {
Brush br = this.dgTable.IsDefault ? DataGrid.BackBrush : this.dgTable.BackBrush;
if (DataGrid.LedgerStyle && (RowNumber % 2 == 1)) {
br = this.dgTable.IsDefault ? this.DataGrid.AlternatingBackBrush : this.dgTable.AlternatingBackBrush;
}
return br;
}
///
/// Returns the BackColor and TextColor that the Graphics object should use
/// for the appropriate values for a given row and column when painting the data.
///
///
protected Brush BackBrushForDataPaint(ref DataGridCell current, DataGridColumnStyle gridColumn, int column) {
Brush backBr = this.GetBackBrush();
if (Selected) {
backBr = this.dgTable.IsDefault ? this.DataGrid.SelectionBackBrush : this.dgTable.SelectionBackBrush;
}
/*
if (RowNumber == current.RowNumber && column == current.ColumnNumber) {
backBr = grid.CurrentCellBackBrush;
}
*/
return backBr;
}
protected Brush ForeBrushForDataPaint(ref DataGridCell current, DataGridColumnStyle gridColumn, int column) {
// Brush foreBrush = gridColumn.ForeBrush;
Brush foreBrush = this.dgTable.IsDefault ? this.DataGrid.ForeBrush : this.dgTable.ForeBrush;
if (Selected) {
foreBrush = this.dgTable.IsDefault ? this.DataGrid.SelectionForeBrush : this.dgTable.SelectionForeBrush;
}
/*
if (RowNumber == current.RowNumber && column == current.ColumnNumber) {
foreColor = grid.CurrentCellForeColor;
}
*/
return foreBrush;
}
[ComVisible(true)]
protected class DataGridRowAccessibleObject : AccessibleObject {
ArrayList cells;
DataGridRow owner = null;
internal static string CellToDisplayString(DataGrid grid, int row, int column) {
if (column < grid.myGridTable.GridColumnStyles.Count) {
return grid.myGridTable.GridColumnStyles[column].PropertyDescriptor.Converter.ConvertToString(grid[row, column]);
}
else {
return "";
}
}
internal static object DisplayStringToCell(DataGrid grid, int row, int column, string value) {
if (column < grid.myGridTable.GridColumnStyles.Count) {
return grid.myGridTable.GridColumnStyles[column].PropertyDescriptor.Converter.ConvertFromString(value);
}
// ignore...
//
return null;
}
[
SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors") // This class and its derived classes are internal.
// So this is not a security back door.
]
public DataGridRowAccessibleObject(DataGridRow owner) : base() {
Debug.Assert(owner != null, "DataGridRowAccessibleObject must have a valid owner DataGridRow");
this.owner = owner;
DataGrid grid = DataGrid;
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, "Create row accessible object");
EnsureChildren();
}
private void EnsureChildren() {
if (cells == null) {
// default size... little extra for relationships...
//
cells = new ArrayList(DataGrid.myGridTable.GridColumnStyles.Count + 2);
AddChildAccessibleObjects(cells);
}
}
protected virtual void AddChildAccessibleObjects(IList children) {
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, "Create row's accessible children");
Debug.Indent();
GridColumnStylesCollection cols = DataGrid.myGridTable.GridColumnStyles;
int len = cols.Count;
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, len + " columns present");
for (int i=0; i
/// Returns the currently focused child, if any.
/// Returns this if the object itself is focused.
///
public override AccessibleObject GetFocused() {
if (DataGrid.Focused) {
DataGridCell cell = DataGrid.CurrentCell;
if (cell.RowNumber == owner.RowNumber) {
return (AccessibleObject)cells[cell.ColumnNumber];
}
}
return null;
}
///
/// Navigate to the next or previous grid entry.entry.
///
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override AccessibleObject Navigate(AccessibleNavigation navdir) {
switch (navdir) {
case AccessibleNavigation.Down:
case AccessibleNavigation.Right:
case AccessibleNavigation.Next:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber + 1);
case AccessibleNavigation.Up:
case AccessibleNavigation.Left:
case AccessibleNavigation.Previous:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber - 1);
case AccessibleNavigation.FirstChild:
if (GetChildCount() > 0) {
return GetChild(0);
}
break;
case AccessibleNavigation.LastChild:
if (GetChildCount() > 0) {
return GetChild(GetChildCount() - 1);
}
break;
}
return null;
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override void Select(AccessibleSelection flags) {
// Focus the PropertyGridView window
//
if ( (flags & AccessibleSelection.TakeFocus) == AccessibleSelection.TakeFocus) {
DataGrid.Focus();
}
// Select the grid entry
//
if ( (flags & AccessibleSelection.TakeSelection) == AccessibleSelection.TakeSelection) {
DataGrid.CurrentRowIndex = owner.RowNumber;
}
}
}
[ComVisible(true)]
protected class DataGridCellAccessibleObject : AccessibleObject {
DataGridRow owner = null;
int column;
public DataGridCellAccessibleObject(DataGridRow owner, int column) : base() {
Debug.Assert(owner != null, "DataGridColumnAccessibleObject must have a valid owner DataGridRow");
this.owner = owner;
this.column = column;
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, "Create cell accessible object");
}
public override Rectangle Bounds {
get {
return DataGrid.RectangleToScreen(DataGrid.GetCellBounds(new DataGridCell(owner.RowNumber, column)));
}
}
public override string Name {
get {
return DataGrid.myGridTable.GridColumnStyles[column].HeaderText;
}
}
public override AccessibleObject Parent {
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
get {
return owner.AccessibleObject;
}
}
protected DataGrid DataGrid {
get {
return owner.DataGrid;
}
}
public override string DefaultAction {
get {
return SR.GetString(SR.AccDGEdit);
}
}
public override AccessibleRole Role {
get {
return AccessibleRole.Cell;
}
}
public override AccessibleStates State {
get {
AccessibleStates state = AccessibleStates.Selectable | AccessibleStates.Focusable;
// Determine focus
//
if (DataGrid.CurrentCell.RowNumber == owner.RowNumber
&& DataGrid.CurrentCell.ColumnNumber == column) {
if (DataGrid.Focused) {
state |= AccessibleStates.Focused;
}
state |= AccessibleStates.Selected;
}
return state;
}
}
public override string Value {
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
get {
if (owner is DataGridAddNewRow) {
return null;
}
else {
return DataGridRowAccessibleObject.CellToDisplayString(DataGrid, owner.RowNumber, column);
}
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
set {
if (!(owner is DataGridAddNewRow)) {
object realValue = DataGridRowAccessibleObject.DisplayStringToCell(DataGrid, owner.RowNumber, column, value);
DataGrid[owner.RowNumber, column] = realValue;
}
}
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override void DoDefaultAction() {
Select(AccessibleSelection.TakeFocus | AccessibleSelection.TakeSelection);
}
///
/// Returns the currently focused child, if any.
/// Returns this if the object itself is focused.
///
public override AccessibleObject GetFocused() {
// Datagrid always returns the cell as the focused thing... so do we!
//
return DataGrid.AccessibilityObject.GetFocused();
}
///
/// Navigate to the next or previous grid entry.
///
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override AccessibleObject Navigate(AccessibleNavigation navdir) {
switch (navdir) {
case AccessibleNavigation.Right:
case AccessibleNavigation.Next:
if (column < owner.AccessibleObject.GetChildCount() - 1) {
return owner.AccessibleObject.GetChild(column + 1);
}
else {
AccessibleObject o = DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber + 1);
if (o != null) {
return o.Navigate(AccessibleNavigation.FirstChild);
}
}
break;
case AccessibleNavigation.Down:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber + 1).Navigate(AccessibleNavigation.FirstChild);
case AccessibleNavigation.Up:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber - 1).Navigate(AccessibleNavigation.FirstChild);
case AccessibleNavigation.Left:
case AccessibleNavigation.Previous:
if (column > 0) {
return owner.AccessibleObject.GetChild(column - 1);
}
else {
AccessibleObject o = DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber - 1);
if (o != null) {
return o.Navigate(AccessibleNavigation.LastChild);
}
}
break;
case AccessibleNavigation.FirstChild:
case AccessibleNavigation.LastChild:
break;
}
return null;
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override void Select(AccessibleSelection flags) {
// Focus the PropertyGridView window
//
if ( (flags & AccessibleSelection.TakeFocus) == AccessibleSelection.TakeFocus) {
DataGrid.Focus();
}
// Select the grid entry
//
if ( (flags & AccessibleSelection.TakeSelection) == AccessibleSelection.TakeSelection) {
DataGrid.CurrentCell = new DataGridCell(owner.RowNumber, column);
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Windows.Forms {
using System.Runtime.Remoting;
using System.Runtime.Versioning;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Imaging;
using System.Security.Permissions;
using Microsoft.Win32;
using System.Collections;
///
/// Encapsulates the painting logic for a new row added to a
///
///
internal abstract class DataGridRow : MarshalByRefObject {
internal protected int number; // row number
private bool selected;
private int height;
// protected DataRow dataRow;
private IntPtr tooltipID = new IntPtr(-1);
private string tooltip = String.Empty;
AccessibleObject accessibleObject;
// for accessibility...
//
// internal DataGrid dataGrid;
// will need this for the painting information ( row header color )
//
protected DataGridTableStyle dgTable;
// we will be mapping only the black color to
// the HeaderForeColor
//
private static ColorMap[] colorMap = new ColorMap[] {new ColorMap()};
// bitmaps
//
private static Bitmap rightArrow = null;
private static Bitmap leftArrow = null;
private static Bitmap errorBmp = null;
private static Bitmap pencilBmp = null;
private static Bitmap starBmp = null;
protected const int xOffset = 3;
protected const int yOffset = 2;
///
/// Initializes a new instance of a
///
[
SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors") // This class and its derived classes are internal.
// So this is not a security back door.
]
public DataGridRow(DataGrid dataGrid, DataGridTableStyle dgTable, int rowNumber) {
if (dataGrid == null || dgTable.DataGrid == null)
throw new ArgumentNullException("dataGrid");
if (rowNumber < 0)
throw new ArgumentException(SR.GetString(SR.DataGridRowRowNumber), "rowNumber");
// this.dataGrid = dataGrid;
this.number = rowNumber;
// map the black color in the pictures to the DataGrid's HeaderForeColor
//
colorMap[0].OldColor = Color.Black;
colorMap[0].NewColor = dgTable.HeaderForeColor;
this.dgTable = dgTable;
height = MinimumRowHeight(dgTable);
}
public AccessibleObject AccessibleObject {
get {
if (accessibleObject == null) {
accessibleObject = CreateAccessibleObject();
}
return accessibleObject;
}
}
protected virtual AccessibleObject CreateAccessibleObject() {
return new DataGridRowAccessibleObject(this);
}
internal protected virtual int MinimumRowHeight(DataGridTableStyle dgTable) {
return MinimumRowHeight(dgTable.GridColumnStyles);
}
internal protected virtual int MinimumRowHeight(GridColumnStylesCollection columns) {
int h = dgTable.IsDefault ? this.DataGrid.PreferredRowHeight : dgTable.PreferredRowHeight;
try {
if (this.dgTable.DataGrid.DataSource != null) {
int nCols = columns.Count;
for (int i = 0; i < nCols; ++i) {
// if (columns[i].Visible && columns[i].PropertyDescriptor != null)
if (columns[i].PropertyDescriptor != null)
h = Math.Max(h, columns[i].GetMinimumHeight());
}
}
}
catch {
}
return h;
}
// =-----------------------------------------------------------------
// = Properties
// =-----------------------------------------------------------------
///
/// Gets the
///
public DataGrid DataGrid {
get {
return this.dgTable.DataGrid;
}
}
internal DataGridTableStyle DataGridTableStyle {
get {
return this.dgTable;
}
set {
dgTable = value;
}
}
/*
public DataGridTable DataGridTable {
get {
return dgTable;
}
}
*/
/*
public DataRow DataRow {
get {
return dataRow;
}
}
*/
///
/// Gets or sets the height of the row.
///
public virtual int Height {
get {
return height;
}
set {
// the height of the row should be at least 0.
// this way, if the row has a relationship list and the user resizes the row such that
// the new height does not accomodate the height of the relationship list
// the row will at least show the relationship list ( and not paint on the portion of the row above this one )
height = Math.Max(0, value);
// when we resize the row, or when we set the PreferredRowHeigth on the
// DataGridTableStyle, we change the height of the Row, which will cause to invalidate,
// then the grid itself will do another invalidate call.
this.dgTable.DataGrid.OnRowHeightChanged(this);
}
}
///
/// Gets the row's number.
///
public int RowNumber {
get {
return this.number;
}
}
///
/// Gets or sets a value indicating whether the row is selected.
///
public virtual bool Selected {
get {
return selected;
}
set {
selected = value;
InvalidateRow();
}
}
// =------------------------------------------------------------------
// = Methods
// =-----------------------------------------------------------------
///
/// Gets the bitmap associated with the row.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetBitmap(string bitmapName) {
Bitmap b = null;
try {
b = new Bitmap(typeof(DataGridCaption), bitmapName);
b.MakeTransparent();
}
catch (Exception e) {
Debug.Fail("Failed to load bitmap: " + bitmapName, e.ToString());
throw e;
}
return b;
}
///
/// When overridden in a derived class, gets the
///
public virtual Rectangle GetCellBounds(int col) {
int firstVisibleCol = this.dgTable.DataGrid.FirstVisibleColumn;
int cx = 0;
Rectangle cellBounds = new Rectangle();
GridColumnStylesCollection columns = this.dgTable.GridColumnStyles;
if (columns != null) {
for (int i = firstVisibleCol; i < col; i++)
if (columns[i].PropertyDescriptor != null)
cx += columns[i].Width;
int borderWidth = this.dgTable.GridLineWidth;
cellBounds = new Rectangle(cx,
0,
columns[col].Width - borderWidth,
Height - borderWidth);
}
return cellBounds;
}
///
/// When overridden in a derived class, gets the
///
public virtual Rectangle GetNonScrollableArea() {
return Rectangle.Empty;
}
///
/// Gets or sets the bitmap displayed in the row header of a new row.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetStarBitmap() {
if (starBmp == null)
starBmp = GetBitmap("DataGridRow.star.bmp");
return starBmp;
}
///
/// Gets or sets the bitmap displayed in the row header that indicates a row can
/// be edited.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetPencilBitmap() {
if (pencilBmp == null)
pencilBmp = GetBitmap("DataGridRow.pencil.bmp");
return pencilBmp;
}
///
/// Gets or sets the bitmap displayed on a row with an error.
///
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetErrorBitmap() {
if (errorBmp == null)
errorBmp = GetBitmap("DataGridRow.error.bmp");
errorBmp.MakeTransparent();
return errorBmp;
}
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetLeftArrowBitmap() {
if (leftArrow == null)
leftArrow = GetBitmap("DataGridRow.left.bmp");
return leftArrow;
}
[ResourceExposure(ResourceScope.Machine)]
[ResourceConsumption(ResourceScope.Machine)]
protected Bitmap GetRightArrowBitmap() {
if (rightArrow == null)
rightArrow = GetBitmap("DataGridRow.right.bmp");
return rightArrow;
}
public virtual void InvalidateRow() {
this.dgTable.DataGrid.InvalidateRow(number);
}
public virtual void InvalidateRowRect(Rectangle r) {
this.dgTable.DataGrid.InvalidateRowRect(number, r);
}
///
/// When overridden in a derived class, notifies the grid that an edit will
/// occur.
///
public virtual void OnEdit() {
}
///
/// When overridden in a derived class, called by the
///
public virtual bool OnKeyPress(Keys keyData) {
int currentColIndex = this.dgTable.DataGrid.CurrentCell.ColumnNumber;
GridColumnStylesCollection columns = this.dgTable.GridColumnStyles;
if (columns != null && currentColIndex >= 0 && currentColIndex < columns.Count) {
DataGridColumnStyle currentColumn = columns[currentColIndex];
if (currentColumn.KeyPress(this.RowNumber, keyData)) {
return true;
}
}
return false;
}
///
/// Called by the
///
public virtual bool OnMouseDown(int x, int y, Rectangle rowHeaders)
{
return OnMouseDown(x,y,rowHeaders, false);
}
///
/// When overridden in a derived class, is called by the
///
public virtual bool OnMouseDown(int x, int y, Rectangle rowHeaders, bool alignToRight) {
// if we call base.OnMouseDown, then the row could not use this
// mouse click at all. in that case LoseChildFocus, so the edit control
// will become visible
LoseChildFocus(rowHeaders, alignToRight);
// we did not use this click at all.
return false;
}
///
///
public virtual bool OnMouseMove(int x, int y, Rectangle rowHeaders) {
return false;
}
///
/// When overridden in a derived class, is called by the
///
public virtual bool OnMouseMove(int x, int y, Rectangle rowHeaders, bool alignToRight) {
return false;
}
///
///
public virtual void OnMouseLeft(Rectangle rowHeaders, bool alignToRight) {
}
public virtual void OnMouseLeft() {
}
///
/// When overridden in a derived class, causes the RowEnter event to occur.
///
public virtual void OnRowEnter() {}
public virtual void OnRowLeave() {}
// processes the Tab Key
// returns TRUE if the TAB key is processed
internal abstract bool ProcessTabKey(Keys keyData, Rectangle rowHeaders, bool alignToRight);
// tells the dataGridRow that it lost the focus
internal abstract void LoseChildFocus(Rectangle rowHeaders, bool alignToRight);
///
/// Paints the row.
///
public abstract int Paint(Graphics g,
Rectangle dataBounds,
Rectangle rowBounds,
int firstVisibleColumn,
int numVisibleColumns);
public abstract int Paint(Graphics g,
Rectangle dataBounds,
Rectangle rowBounds,
int firstVisibleColumn,
int numVisibleColumns,
bool alignToRight);
///
/// Draws a border on the bottom DataGrid.GridLineWidth pixels
/// of the bounding rectangle passed in.
///
protected virtual void PaintBottomBorder(Graphics g, Rectangle bounds, int dataWidth)
{
PaintBottomBorder(g, bounds, dataWidth, this.dgTable.GridLineWidth, false);
}
protected virtual void PaintBottomBorder(Graphics g, Rectangle bounds, int dataWidth, int borderWidth, bool alignToRight) {
// paint bottom border
Rectangle bottomBorder = new Rectangle(alignToRight ? bounds.Right - dataWidth : bounds.X,
bounds.Bottom - borderWidth,
dataWidth,
borderWidth);
g.FillRectangle(this.dgTable.IsDefault ? this.DataGrid.GridLineBrush : this.dgTable.GridLineBrush, bottomBorder);
// paint any exposed region to the right
if (dataWidth < bounds.Width) {
g.FillRectangle(this.dgTable.DataGrid.BackgroundBrush,
alignToRight ? bounds.X: bottomBorder.Right,
bottomBorder.Y,
bounds.Width - bottomBorder.Width,
borderWidth);
}
}
///
/// Paints the row.
///
public virtual int PaintData(Graphics g,
Rectangle bounds,
int firstVisibleColumn,
int columnCount)
{
return PaintData(g, bounds, firstVisibleColumn, columnCount, false);
}
public virtual int PaintData(Graphics g,
Rectangle bounds,
int firstVisibleColumn,
int columnCount,
bool alignToRight) {
Debug.WriteLineIf(CompModSwitches.DGRowPaint.TraceVerbose, "Painting DataGridAddNewRow: bounds = " + bounds.ToString());
Rectangle cellBounds = bounds;
int bWidth = this.dgTable.IsDefault ? this.DataGrid.GridLineWidth : this.dgTable.GridLineWidth;
int cx = 0;
DataGridCell current = this.dgTable.DataGrid.CurrentCell;
GridColumnStylesCollection columns = dgTable.GridColumnStyles;
int nCols = columns.Count;
for (int col = firstVisibleColumn; col < nCols; ++col) {
if (cx > bounds.Width)
break;
// if (!columns[col].Visible || columns[col].PropertyDescriptor == null)
if (columns[col].PropertyDescriptor == null || columns[col].Width <= 0)
continue;
cellBounds.Width = columns[col].Width - bWidth;
if (alignToRight)
cellBounds.X = bounds.Right - cx - cellBounds.Width;
else
cellBounds.X = bounds.X + cx;
// Paint the data with the the DataGridColumn
Brush backBr = BackBrushForDataPaint(ref current, columns[col], col);
Brush foreBrush = ForeBrushForDataPaint(ref current, columns[col], col);
PaintCellContents(g,
cellBounds,
columns[col],
backBr,
foreBrush,
alignToRight);
// Paint the border to the right of each cell
if (bWidth > 0) {
g.FillRectangle(this.dgTable.IsDefault ? this.DataGrid.GridLineBrush : this.dgTable.GridLineBrush,
alignToRight ? cellBounds.X - bWidth : cellBounds.Right,
cellBounds.Y,
bWidth,
cellBounds.Height);
}
cx += cellBounds.Width + bWidth;
}
// Paint any exposed area to the right ( or left ) of the data cell area
if (cx < bounds.Width) {
g.FillRectangle(this.dgTable.DataGrid.BackgroundBrush,
alignToRight ? bounds.X : bounds.X + cx,
bounds.Y,
bounds.Width - cx,
bounds.Height);
}
return cx;
}
protected virtual void PaintCellContents(Graphics g, Rectangle cellBounds, DataGridColumnStyle column,
Brush backBr, Brush foreBrush)
{
PaintCellContents(g, cellBounds, column, backBr, foreBrush, false);
}
protected virtual void PaintCellContents(Graphics g, Rectangle cellBounds, DataGridColumnStyle column,
Brush backBr, Brush foreBrush, bool alignToRight) {
g.FillRectangle(backBr, cellBounds);
}
//
// This function will do the following: if paintIcon is set to true, then
// will draw the image on the RowHeader. if paintIcon is set to false,
// then this function will fill the rectangle on which otherwise will
// have been drawn the image
//
// will return the rectangle that includes the Icon
//
protected Rectangle PaintIcon(Graphics g, Rectangle visualBounds, bool paintIcon, bool alignToRight, Bitmap bmp) {
return PaintIcon(g, visualBounds, paintIcon, alignToRight, bmp,
this.dgTable.IsDefault ? this.DataGrid.HeaderBackBrush : this.dgTable.HeaderBackBrush);
}
protected Rectangle PaintIcon(Graphics g, Rectangle visualBounds, bool paintIcon, bool alignToRight, Bitmap bmp, Brush backBrush) {
Size bmpSize = bmp.Size;
Rectangle bmpRect = new Rectangle(alignToRight ? visualBounds.Right - xOffset - bmpSize.Width : visualBounds.X + xOffset,
visualBounds.Y + yOffset,
bmpSize.Width,
bmpSize.Height);
g.FillRectangle(backBrush, visualBounds);
if (paintIcon)
{
colorMap[0].NewColor = this.dgTable.IsDefault ? this.DataGrid.HeaderForeColor : this.dgTable.HeaderForeColor;
colorMap[0].OldColor = Color.Black;
ImageAttributes attr = new ImageAttributes();
attr.SetRemapTable(colorMap, ColorAdjustType.Bitmap);
g.DrawImage(bmp, bmpRect, 0, 0, bmpRect.Width, bmpRect.Height,GraphicsUnit.Pixel, attr);
// g.DrawImage(bmp, bmpRect);
attr.Dispose();
}
return bmpRect;
}
// assume that the row is not aligned to right, and that the row is not dirty
public virtual void PaintHeader(Graphics g, Rectangle visualBounds) {
PaintHeader(g, visualBounds, false);
}
// assume that the row is not dirty
public virtual void PaintHeader(Graphics g, Rectangle visualBounds, bool alignToRight) {
PaintHeader(g,visualBounds, alignToRight, false);
}
public virtual void PaintHeader(Graphics g, Rectangle visualBounds, bool alignToRight, bool rowIsDirty) {
Rectangle bounds = visualBounds;
// paint the first part of the row header: the Arror or Pencil/Star
Bitmap bmp;
if (this is DataGridAddNewRow)
{
bmp = GetStarBitmap();
lock (bmp) {
bounds.X += PaintIcon(g, bounds, true, alignToRight, bmp).Width + xOffset;
}
return;
}
else if (rowIsDirty)
{
bmp = GetPencilBitmap();
lock (bmp) {
bounds.X += PaintIcon(g, bounds, RowNumber == this.DataGrid.CurrentCell.RowNumber, alignToRight, bmp).Width + xOffset;
}
}
else
{
bmp = alignToRight ? GetLeftArrowBitmap() : GetRightArrowBitmap();
lock (bmp) {
bounds.X += PaintIcon(g, bounds, RowNumber == this.DataGrid.CurrentCell.RowNumber, alignToRight, bmp).Width + xOffset;
}
}
// Paint the error icon
//
object errorInfo = DataGrid.ListManager[this.number];
if (!(errorInfo is IDataErrorInfo))
return;
string errString = ((IDataErrorInfo) errorInfo).Error;
if (errString == null)
errString = String.Empty;
if (tooltip != errString) {
if (!String.IsNullOrEmpty(tooltip)) {
DataGrid.ToolTipProvider.RemoveToolTip(tooltipID);
tooltip = String.Empty;
tooltipID = new IntPtr(-1);
}
}
if (String.IsNullOrEmpty(errString))
return;
// we now have an error string: paint the errorIcon and add the tooltip
Rectangle errRect;
bmp = GetErrorBitmap();
lock (bmp) {
errRect = PaintIcon(g, bounds, true, alignToRight, bmp);
}
bounds.X += errRect.Width + xOffset;
tooltip = errString;
tooltipID = (IntPtr)((int)DataGrid.ToolTipId++);
DataGrid.ToolTipProvider.AddToolTip(tooltip, tooltipID, errRect);
}
protected Brush GetBackBrush() {
Brush br = this.dgTable.IsDefault ? DataGrid.BackBrush : this.dgTable.BackBrush;
if (DataGrid.LedgerStyle && (RowNumber % 2 == 1)) {
br = this.dgTable.IsDefault ? this.DataGrid.AlternatingBackBrush : this.dgTable.AlternatingBackBrush;
}
return br;
}
///
/// Returns the BackColor and TextColor that the Graphics object should use
/// for the appropriate values for a given row and column when painting the data.
///
///
protected Brush BackBrushForDataPaint(ref DataGridCell current, DataGridColumnStyle gridColumn, int column) {
Brush backBr = this.GetBackBrush();
if (Selected) {
backBr = this.dgTable.IsDefault ? this.DataGrid.SelectionBackBrush : this.dgTable.SelectionBackBrush;
}
/*
if (RowNumber == current.RowNumber && column == current.ColumnNumber) {
backBr = grid.CurrentCellBackBrush;
}
*/
return backBr;
}
protected Brush ForeBrushForDataPaint(ref DataGridCell current, DataGridColumnStyle gridColumn, int column) {
// Brush foreBrush = gridColumn.ForeBrush;
Brush foreBrush = this.dgTable.IsDefault ? this.DataGrid.ForeBrush : this.dgTable.ForeBrush;
if (Selected) {
foreBrush = this.dgTable.IsDefault ? this.DataGrid.SelectionForeBrush : this.dgTable.SelectionForeBrush;
}
/*
if (RowNumber == current.RowNumber && column == current.ColumnNumber) {
foreColor = grid.CurrentCellForeColor;
}
*/
return foreBrush;
}
[ComVisible(true)]
protected class DataGridRowAccessibleObject : AccessibleObject {
ArrayList cells;
DataGridRow owner = null;
internal static string CellToDisplayString(DataGrid grid, int row, int column) {
if (column < grid.myGridTable.GridColumnStyles.Count) {
return grid.myGridTable.GridColumnStyles[column].PropertyDescriptor.Converter.ConvertToString(grid[row, column]);
}
else {
return "";
}
}
internal static object DisplayStringToCell(DataGrid grid, int row, int column, string value) {
if (column < grid.myGridTable.GridColumnStyles.Count) {
return grid.myGridTable.GridColumnStyles[column].PropertyDescriptor.Converter.ConvertFromString(value);
}
// ignore...
//
return null;
}
[
SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors") // This class and its derived classes are internal.
// So this is not a security back door.
]
public DataGridRowAccessibleObject(DataGridRow owner) : base() {
Debug.Assert(owner != null, "DataGridRowAccessibleObject must have a valid owner DataGridRow");
this.owner = owner;
DataGrid grid = DataGrid;
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, "Create row accessible object");
EnsureChildren();
}
private void EnsureChildren() {
if (cells == null) {
// default size... little extra for relationships...
//
cells = new ArrayList(DataGrid.myGridTable.GridColumnStyles.Count + 2);
AddChildAccessibleObjects(cells);
}
}
protected virtual void AddChildAccessibleObjects(IList children) {
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, "Create row's accessible children");
Debug.Indent();
GridColumnStylesCollection cols = DataGrid.myGridTable.GridColumnStyles;
int len = cols.Count;
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, len + " columns present");
for (int i=0; i
/// Returns the currently focused child, if any.
/// Returns this if the object itself is focused.
///
public override AccessibleObject GetFocused() {
if (DataGrid.Focused) {
DataGridCell cell = DataGrid.CurrentCell;
if (cell.RowNumber == owner.RowNumber) {
return (AccessibleObject)cells[cell.ColumnNumber];
}
}
return null;
}
///
/// Navigate to the next or previous grid entry.entry.
///
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override AccessibleObject Navigate(AccessibleNavigation navdir) {
switch (navdir) {
case AccessibleNavigation.Down:
case AccessibleNavigation.Right:
case AccessibleNavigation.Next:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber + 1);
case AccessibleNavigation.Up:
case AccessibleNavigation.Left:
case AccessibleNavigation.Previous:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber - 1);
case AccessibleNavigation.FirstChild:
if (GetChildCount() > 0) {
return GetChild(0);
}
break;
case AccessibleNavigation.LastChild:
if (GetChildCount() > 0) {
return GetChild(GetChildCount() - 1);
}
break;
}
return null;
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override void Select(AccessibleSelection flags) {
// Focus the PropertyGridView window
//
if ( (flags & AccessibleSelection.TakeFocus) == AccessibleSelection.TakeFocus) {
DataGrid.Focus();
}
// Select the grid entry
//
if ( (flags & AccessibleSelection.TakeSelection) == AccessibleSelection.TakeSelection) {
DataGrid.CurrentRowIndex = owner.RowNumber;
}
}
}
[ComVisible(true)]
protected class DataGridCellAccessibleObject : AccessibleObject {
DataGridRow owner = null;
int column;
public DataGridCellAccessibleObject(DataGridRow owner, int column) : base() {
Debug.Assert(owner != null, "DataGridColumnAccessibleObject must have a valid owner DataGridRow");
this.owner = owner;
this.column = column;
Debug.WriteLineIf(DataGrid.DataGridAcc.TraceVerbose, "Create cell accessible object");
}
public override Rectangle Bounds {
get {
return DataGrid.RectangleToScreen(DataGrid.GetCellBounds(new DataGridCell(owner.RowNumber, column)));
}
}
public override string Name {
get {
return DataGrid.myGridTable.GridColumnStyles[column].HeaderText;
}
}
public override AccessibleObject Parent {
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
get {
return owner.AccessibleObject;
}
}
protected DataGrid DataGrid {
get {
return owner.DataGrid;
}
}
public override string DefaultAction {
get {
return SR.GetString(SR.AccDGEdit);
}
}
public override AccessibleRole Role {
get {
return AccessibleRole.Cell;
}
}
public override AccessibleStates State {
get {
AccessibleStates state = AccessibleStates.Selectable | AccessibleStates.Focusable;
// Determine focus
//
if (DataGrid.CurrentCell.RowNumber == owner.RowNumber
&& DataGrid.CurrentCell.ColumnNumber == column) {
if (DataGrid.Focused) {
state |= AccessibleStates.Focused;
}
state |= AccessibleStates.Selected;
}
return state;
}
}
public override string Value {
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
get {
if (owner is DataGridAddNewRow) {
return null;
}
else {
return DataGridRowAccessibleObject.CellToDisplayString(DataGrid, owner.RowNumber, column);
}
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
set {
if (!(owner is DataGridAddNewRow)) {
object realValue = DataGridRowAccessibleObject.DisplayStringToCell(DataGrid, owner.RowNumber, column, value);
DataGrid[owner.RowNumber, column] = realValue;
}
}
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override void DoDefaultAction() {
Select(AccessibleSelection.TakeFocus | AccessibleSelection.TakeSelection);
}
///
/// Returns the currently focused child, if any.
/// Returns this if the object itself is focused.
///
public override AccessibleObject GetFocused() {
// Datagrid always returns the cell as the focused thing... so do we!
//
return DataGrid.AccessibilityObject.GetFocused();
}
///
/// Navigate to the next or previous grid entry.
///
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override AccessibleObject Navigate(AccessibleNavigation navdir) {
switch (navdir) {
case AccessibleNavigation.Right:
case AccessibleNavigation.Next:
if (column < owner.AccessibleObject.GetChildCount() - 1) {
return owner.AccessibleObject.GetChild(column + 1);
}
else {
AccessibleObject o = DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber + 1);
if (o != null) {
return o.Navigate(AccessibleNavigation.FirstChild);
}
}
break;
case AccessibleNavigation.Down:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber + 1).Navigate(AccessibleNavigation.FirstChild);
case AccessibleNavigation.Up:
return DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber - 1).Navigate(AccessibleNavigation.FirstChild);
case AccessibleNavigation.Left:
case AccessibleNavigation.Previous:
if (column > 0) {
return owner.AccessibleObject.GetChild(column - 1);
}
else {
AccessibleObject o = DataGrid.AccessibilityObject.GetChild(1 + owner.dgTable.GridColumnStyles.Count + owner.RowNumber - 1);
if (o != null) {
return o.Navigate(AccessibleNavigation.LastChild);
}
}
break;
case AccessibleNavigation.FirstChild:
case AccessibleNavigation.LastChild:
break;
}
return null;
}
[SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public override void Select(AccessibleSelection flags) {
// Focus the PropertyGridView window
//
if ( (flags & AccessibleSelection.TakeFocus) == AccessibleSelection.TakeFocus) {
DataGrid.Focus();
}
// Select the grid entry
//
if ( (flags & AccessibleSelection.TakeSelection) == AccessibleSelection.TakeSelection) {
DataGrid.CurrentCell = new DataGridCell(owner.RowNumber, column);
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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- DataFormat.cs
- IdentifierElement.cs
- Utils.cs
- ScriptControl.cs
- CollectionContainer.cs
- MenuAutoFormat.cs
- MenuItemStyle.cs
- IncrementalCompileAnalyzer.cs
- WebPageTraceListener.cs
- XmlEnumAttribute.cs
- SplashScreenNativeMethods.cs
- MultiTargetingUtil.cs
- PointLightBase.cs
- BuiltInExpr.cs
- ResourceDescriptionAttribute.cs
- TableItemPattern.cs
- RecognizerInfo.cs
- DispatcherOperation.cs
- FilteredDataSetHelper.cs
- mediaeventargs.cs
- ListMarkerSourceInfo.cs
- SqlMetaData.cs
- PrintEvent.cs
- PackageDigitalSignature.cs
- XmlWrappingReader.cs
- SafeProcessHandle.cs
- RelationshipManager.cs
- ExcCanonicalXml.cs
- DefaultValidator.cs
- MissingManifestResourceException.cs
- _ListenerAsyncResult.cs
- GridEntry.cs
- PointLight.cs
- MutableAssemblyCacheEntry.cs
- ELinqQueryState.cs
- DataObjectCopyingEventArgs.cs
- Event.cs
- OutputCacheModule.cs
- MenuItemBindingCollection.cs
- DecimalAnimationBase.cs
- Journal.cs
- DynamicHyperLink.cs
- MetafileHeaderWmf.cs
- GridErrorDlg.cs
- DataExpression.cs
- MimeAnyImporter.cs
- FieldBuilder.cs
- BaseAppDomainProtocolHandler.cs
- ValidatedControlConverter.cs
- AnnotationComponentChooser.cs
- FloaterBaseParagraph.cs
- SqlCommandAsyncResult.cs
- EventLogPermission.cs
- KeyGestureValueSerializer.cs
- PlaceHolder.cs
- Random.cs
- UDPClient.cs
- SystemResources.cs
- CollectionViewSource.cs
- ProxyAssemblyNotLoadedException.cs
- ViewKeyConstraint.cs
- ContractSearchPattern.cs
- DataSetMappper.cs
- SeverityFilter.cs
- XmlHierarchyData.cs
- IsolatedStorageFile.cs
- UriParserTemplates.cs
- DefaultMergeHelper.cs
- DataGridCommandEventArgs.cs
- MimeBasePart.cs
- ColumnProvider.cs
- TabletDevice.cs
- SingleConverter.cs
- NameValueCollection.cs
- SiblingIterators.cs
- Switch.cs
- WebPartRestoreVerb.cs
- StylusCollection.cs
- ManagementEventArgs.cs
- GorillaCodec.cs
- GridViewSelectEventArgs.cs
- RijndaelManagedTransform.cs
- ObjectDataSourceDisposingEventArgs.cs
- _OverlappedAsyncResult.cs
- HiddenField.cs
- SQLStringStorage.cs
- ActivityValidationServices.cs
- WindowsTreeView.cs
- ValidatedControlConverter.cs
- WebPartHelpVerb.cs
- MulticastDelegate.cs
- RandomNumberGenerator.cs
- WorkflowWebService.cs
- ScriptControl.cs
- QuaternionRotation3D.cs
- WinInet.cs
- WorkflowView.cs
- OverflowException.cs
- GcHandle.cs
- ClientRuntimeConfig.cs