Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / WinForms / Managed / System / WinForms / DataGridViewAccessibleObject.cs / 1 / DataGridViewAccessibleObject.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System.Security.Permissions; using System.Diagnostics.CodeAnalysis; using System.Drawing; namespace System.Windows.Forms { public partial class DataGridView { [ System.Runtime.InteropServices.ComVisible(true) ] ///protected class DataGridViewAccessibleObject : ControlAccessibleObject { DataGridView owner; DataGridViewTopRowAccessibleObject topRowAccessibilityObject = null; DataGridViewSelectedCellsAccessibleObject selectedCellsAccessibilityObject = null; /// public DataGridViewAccessibleObject(DataGridView owner) : base(owner) { this.owner = owner; } /// public override string Name { [SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters")] // Don't localize string "DataGridView". get { string name = this.Owner.AccessibleName; if (!String.IsNullOrEmpty(name)) { return name; } else { // The default name should not be localized. return "DataGridView"; } } } /// public override AccessibleRole Role { get { AccessibleRole role = owner.AccessibleRole; if (role != AccessibleRole.Default) { return role; } // the Default AccessibleRole is Table return AccessibleRole.Table; } } private AccessibleObject TopRowAccessibilityObject { get { if (this.topRowAccessibilityObject == null) { this.topRowAccessibilityObject = new DataGridViewTopRowAccessibleObject(this.owner); } return this.topRowAccessibilityObject; } } private AccessibleObject SelectedCellsAccessibilityObject { get { if (this.selectedCellsAccessibilityObject == null) { this.selectedCellsAccessibilityObject = new DataGridViewSelectedCellsAccessibleObject(this.owner); } return this.selectedCellsAccessibilityObject; } } /// public override AccessibleObject GetChild(int index) { if (this.owner.Columns.Count == 0) { System.Diagnostics.Debug.Assert(this.GetChildCount() == 0); return null; } if (index < 1 && this.owner.ColumnHeadersVisible) { return this.TopRowAccessibilityObject; } if (this.owner.ColumnHeadersVisible) { index--; } if (index < this.owner.Rows.GetRowCount(DataGridViewElementStates.Visible)) { int actualRowIndex = this.owner.Rows.DisplayIndexToRowIndex(index); return this.owner.Rows[actualRowIndex].AccessibilityObject; } index -= this.owner.Rows.GetRowCount(DataGridViewElementStates.Visible); if (this.owner.horizScrollBar.Visible) { if (index == 0) { return this.owner.horizScrollBar.AccessibilityObject; } else { index--; } } if (this.owner.vertScrollBar.Visible) { if (index == 0) { return this.owner.vertScrollBar.AccessibilityObject; } } return null; } /// public override int GetChildCount() { if (this.owner.Columns.Count == 0) { return 0; } int childCount = this.owner.Rows.GetRowCount(DataGridViewElementStates.Visible); // the column header collection Accessible Object if (this.owner.ColumnHeadersVisible) { childCount++; } if (this.owner.horizScrollBar.Visible) { childCount++; } if (this.owner.vertScrollBar.Visible) { childCount++; } return childCount; } /// public override AccessibleObject GetFocused() { if (this.owner.Focused && this.owner.CurrentCell != null) { return this.owner.CurrentCell.AccessibilityObject; } else { return null; } } /// public override AccessibleObject GetSelected() { return this.SelectedCellsAccessibilityObject; } /// public override AccessibleObject HitTest(int x, int y) { Point pt = this.owner.PointToClient(new Point(x, y)); HitTestInfo hti = this.owner.HitTest(pt.X, pt.Y); switch (hti.Type) { case DataGridViewHitTestType.Cell: return this.owner.Rows[hti.RowIndex].Cells[hti.ColumnIndex].AccessibilityObject; case DataGridViewHitTestType.ColumnHeader: // map the column index to the actual display index int actualDisplayIndex = this.owner.Columns.ColumnIndexToActualDisplayIndex(hti.ColumnIndex, DataGridViewElementStates.Visible); if (this.owner.RowHeadersVisible) { // increment the childIndex because the first child in the TopRowAccessibleObject is the TopLeftHeaderCellAccObj return this.TopRowAccessibilityObject.GetChild(actualDisplayIndex + 1); } else { return this.TopRowAccessibilityObject.GetChild(actualDisplayIndex); } case DataGridViewHitTestType.RowHeader: return this.owner.Rows[hti.RowIndex].AccessibilityObject; case DataGridViewHitTestType.TopLeftHeader: return this.owner.TopLeftHeaderCell.AccessibilityObject; case DataGridViewHitTestType.VerticalScrollBar: return this.owner.VerticalScrollBar.AccessibilityObject; case DataGridViewHitTestType.HorizontalScrollBar: return this.owner.HorizontalScrollBar.AccessibilityObject; default: return null; } } /// [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)] public override AccessibleObject Navigate(AccessibleNavigation navigationDirection) { switch (navigationDirection) { case AccessibleNavigation.FirstChild: return this.GetChild(0); case AccessibleNavigation.LastChild: return this.GetChild(this.GetChildCount() - 1); default: return null; } } /* [....]: why is this method defined and not used? // this method is called when the accessible object needs to be reset // Example: when the user changes the display index on a column or when the user modifies the column collection internal void Reset() { this.NotifyClients(AccessibleEvents.Reorder); } */ } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System.Security.Permissions; using System.Diagnostics.CodeAnalysis; using System.Drawing; namespace System.Windows.Forms { public partial class DataGridView { [ System.Runtime.InteropServices.ComVisible(true) ] ///protected class DataGridViewAccessibleObject : ControlAccessibleObject { DataGridView owner; DataGridViewTopRowAccessibleObject topRowAccessibilityObject = null; DataGridViewSelectedCellsAccessibleObject selectedCellsAccessibilityObject = null; /// public DataGridViewAccessibleObject(DataGridView owner) : base(owner) { this.owner = owner; } /// public override string Name { [SuppressMessage("Microsoft.Globalization", "CA1303:DoNotPassLiteralsAsLocalizedParameters")] // Don't localize string "DataGridView". get { string name = this.Owner.AccessibleName; if (!String.IsNullOrEmpty(name)) { return name; } else { // The default name should not be localized. return "DataGridView"; } } } /// public override AccessibleRole Role { get { AccessibleRole role = owner.AccessibleRole; if (role != AccessibleRole.Default) { return role; } // the Default AccessibleRole is Table return AccessibleRole.Table; } } private AccessibleObject TopRowAccessibilityObject { get { if (this.topRowAccessibilityObject == null) { this.topRowAccessibilityObject = new DataGridViewTopRowAccessibleObject(this.owner); } return this.topRowAccessibilityObject; } } private AccessibleObject SelectedCellsAccessibilityObject { get { if (this.selectedCellsAccessibilityObject == null) { this.selectedCellsAccessibilityObject = new DataGridViewSelectedCellsAccessibleObject(this.owner); } return this.selectedCellsAccessibilityObject; } } /// public override AccessibleObject GetChild(int index) { if (this.owner.Columns.Count == 0) { System.Diagnostics.Debug.Assert(this.GetChildCount() == 0); return null; } if (index < 1 && this.owner.ColumnHeadersVisible) { return this.TopRowAccessibilityObject; } if (this.owner.ColumnHeadersVisible) { index--; } if (index < this.owner.Rows.GetRowCount(DataGridViewElementStates.Visible)) { int actualRowIndex = this.owner.Rows.DisplayIndexToRowIndex(index); return this.owner.Rows[actualRowIndex].AccessibilityObject; } index -= this.owner.Rows.GetRowCount(DataGridViewElementStates.Visible); if (this.owner.horizScrollBar.Visible) { if (index == 0) { return this.owner.horizScrollBar.AccessibilityObject; } else { index--; } } if (this.owner.vertScrollBar.Visible) { if (index == 0) { return this.owner.vertScrollBar.AccessibilityObject; } } return null; } /// public override int GetChildCount() { if (this.owner.Columns.Count == 0) { return 0; } int childCount = this.owner.Rows.GetRowCount(DataGridViewElementStates.Visible); // the column header collection Accessible Object if (this.owner.ColumnHeadersVisible) { childCount++; } if (this.owner.horizScrollBar.Visible) { childCount++; } if (this.owner.vertScrollBar.Visible) { childCount++; } return childCount; } /// public override AccessibleObject GetFocused() { if (this.owner.Focused && this.owner.CurrentCell != null) { return this.owner.CurrentCell.AccessibilityObject; } else { return null; } } /// public override AccessibleObject GetSelected() { return this.SelectedCellsAccessibilityObject; } /// public override AccessibleObject HitTest(int x, int y) { Point pt = this.owner.PointToClient(new Point(x, y)); HitTestInfo hti = this.owner.HitTest(pt.X, pt.Y); switch (hti.Type) { case DataGridViewHitTestType.Cell: return this.owner.Rows[hti.RowIndex].Cells[hti.ColumnIndex].AccessibilityObject; case DataGridViewHitTestType.ColumnHeader: // map the column index to the actual display index int actualDisplayIndex = this.owner.Columns.ColumnIndexToActualDisplayIndex(hti.ColumnIndex, DataGridViewElementStates.Visible); if (this.owner.RowHeadersVisible) { // increment the childIndex because the first child in the TopRowAccessibleObject is the TopLeftHeaderCellAccObj return this.TopRowAccessibilityObject.GetChild(actualDisplayIndex + 1); } else { return this.TopRowAccessibilityObject.GetChild(actualDisplayIndex); } case DataGridViewHitTestType.RowHeader: return this.owner.Rows[hti.RowIndex].AccessibilityObject; case DataGridViewHitTestType.TopLeftHeader: return this.owner.TopLeftHeaderCell.AccessibilityObject; case DataGridViewHitTestType.VerticalScrollBar: return this.owner.VerticalScrollBar.AccessibilityObject; case DataGridViewHitTestType.HorizontalScrollBar: return this.owner.HorizontalScrollBar.AccessibilityObject; default: return null; } } /// [SecurityPermission(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)] public override AccessibleObject Navigate(AccessibleNavigation navigationDirection) { switch (navigationDirection) { case AccessibleNavigation.FirstChild: return this.GetChild(0); case AccessibleNavigation.LastChild: return this.GetChild(this.GetChildCount() - 1); default: return null; } } /* [....]: why is this method defined and not used? // this method is called when the accessible object needs to be reset // Example: when the user changes the display index on a column or when the user modifies the column collection internal void Reset() { this.NotifyClients(AccessibleEvents.Reorder); } */ } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ResolveInfo.cs
- Point4D.cs
- XamlToRtfParser.cs
- OdbcException.cs
- ErrorRuntimeConfig.cs
- Double.cs
- XmlCharCheckingWriter.cs
- _Rfc2616CacheValidators.cs
- PaperSource.cs
- XamlStackWriter.cs
- PerfCounters.cs
- XmlWrappingWriter.cs
- processwaithandle.cs
- RulePatternOps.cs
- CompressionTransform.cs
- EndEvent.cs
- ApplicationHost.cs
- DrawingBrush.cs
- ECDiffieHellmanCngPublicKey.cs
- UInt64Storage.cs
- SoapHeader.cs
- WebPartsSection.cs
- ExpandableObjectConverter.cs
- TextTreeDeleteContentUndoUnit.cs
- UrlPath.cs
- HwndStylusInputProvider.cs
- SigningDialog.cs
- TemplatedMailWebEventProvider.cs
- EqualityComparer.cs
- ThreadStateException.cs
- HeaderCollection.cs
- VersionedStreamOwner.cs
- LassoSelectionBehavior.cs
- RSAPKCS1KeyExchangeDeformatter.cs
- RemoteWebConfigurationHost.cs
- HyperLinkField.cs
- SqlAggregateChecker.cs
- DiagnosticEventProvider.cs
- ExpressionDumper.cs
- Win32.cs
- XmlExtensionFunction.cs
- CollectionBuilder.cs
- WebBrowserNavigatedEventHandler.cs
- SystemWebSectionGroup.cs
- ScanQueryOperator.cs
- XmlWellformedWriter.cs
- HelpProvider.cs
- ComponentEvent.cs
- XmlSchemas.cs
- HandlerWithFactory.cs
- ZipPackage.cs
- Typeface.cs
- Duration.cs
- XmlDataSourceNodeDescriptor.cs
- SQLSingleStorage.cs
- Error.cs
- RenderDataDrawingContext.cs
- WebEventCodes.cs
- XhtmlBasicImageAdapter.cs
- DbParameterCollection.cs
- BamlRecords.cs
- Zone.cs
- TreeNodeBinding.cs
- BufferBuilder.cs
- ControllableStoryboardAction.cs
- MonitorWrapper.cs
- PublishLicense.cs
- CommandBinding.cs
- StretchValidation.cs
- Schema.cs
- IgnoreFlushAndCloseStream.cs
- MsdtcClusterUtils.cs
- EntitySqlQueryState.cs
- ReferencedCollectionType.cs
- BooleanToVisibilityConverter.cs
- TextTreeText.cs
- XMLUtil.cs
- DefaultValidator.cs
- DataGridViewCellConverter.cs
- UiaCoreProviderApi.cs
- DataGridViewColumnHeaderCell.cs
- HtmlElementErrorEventArgs.cs
- IPAddress.cs
- IndentedWriter.cs
- Win32SafeHandles.cs
- ApplicationException.cs
- CryptoStream.cs
- InstanceDescriptor.cs
- HyperLink.cs
- LineBreakRecord.cs
- TextEffect.cs
- ReadWriteSpinLock.cs
- UnsafeNetInfoNativeMethods.cs
- ExpanderAutomationPeer.cs
- StreamWriter.cs
- Socket.cs
- CatalogZone.cs
- COM2IVsPerPropertyBrowsingHandler.cs
- LinqDataSource.cs
- DesignerActionTextItem.cs