Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / Ink / XamlClipboardData.cs / 1305600 / XamlClipboardData.cs
//---------------------------------------------------------------------------- // // File: XamlClipboardData.cs // // Description: // A base class which can copy an array of UIElement to the IDataObject as Xaml format. // It also can retrieve the Xaml data from the IDataObject and create a UIElement array. // // Features: // // History: // 11/17/2004 waynezen: Created // // Copyright (C) 2001 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Windows; using System.Windows.Controls; using System.Windows.Markup; using System.Security; using System.Text; using System.Diagnostics; using MS.Internal; //security helper from PresentationCore namespace MS.Internal.Ink { internal class XamlClipboardData : ElementsClipboardData { //------------------------------------------------------------------------------- // // Constructors // //------------------------------------------------------------------------------- #region Constructors // The default constructor internal XamlClipboardData() { } // The constructor with UIElement[] as an argument internal XamlClipboardData(UIElement[] elements) : base (elements) { } // Checks if the data can be pasted. internal override bool CanPaste(IDataObject dataObject) { // Check if we have Xaml data bool hasXamlData = false; try { hasXamlData = dataObject.GetDataPresent(DataFormats.Xaml, false); } catch ( SecurityException ) { // If we are under the partial trust, the Xaml format will fail when it needs to be registered. // In this case, we should just disable the Paste Xaml format content. hasXamlData = false; } return hasXamlData; } #endregion Constructors //-------------------------------------------------------------------------------- // // Protected Methods // //------------------------------------------------------------------------------- #region Protected Methods // Check if we have data to be copied protected override bool CanCopy() { return Elements != null && Elements.Count != 0; } // Convert the elements to the Xaml and copy the Xaml to the IDataObject ////// /// /// ////// Critical: Calls critical method /// SecurityHelper.ExtractAppDomainPermissionSetMinusSiteOfOrigin /// /// We call this to ensure that the appdomain permission set is on the clipboard. /// The Clipboard methods use this information to ensure that apps can not paste data /// that was copied in low trust to application to a high trust application /// [SecurityCritical] protected override void DoCopy(IDataObject dataObject) { // Serialize the selected elements and add it to the data object. StringBuilder xmlData = new StringBuilder(); foreach ( UIElement element in Elements ) { string xml; xml = XamlWriter.Save(element); xmlData.Append(xml); } // Set the data object as XML format. dataObject.SetData(DataFormats.Xaml, xmlData.ToString()); // // we need to copy the permission set on the clipboard for // the Clipboard class methods. See security note for details. // PermissionSet permSet = SecurityHelper.ExtractAppDomainPermissionSetMinusSiteOfOrigin(); string setString = permSet.ToString(); Debug.Assert(setString.Length > 0); dataObject.SetData(DataFormats.ApplicationTrust, setString); } // Retrieves the Xaml from the IDataObject and instantiate the elements based on the Xaml protected override void DoPaste(IDataObject dataObject) { ElementList = new List(); // Get the XML data from the data object. string xml = dataObject.GetData(DataFormats.Xaml) as string; if ( !String.IsNullOrEmpty(xml) ) { UIElement element = XamlReader.Load(new System.Xml.XmlTextReader(new System.IO.StringReader(xml))) as UIElement; if (element != null) { ElementList.Add(element); } } } #endregion Protected Methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // // File: XamlClipboardData.cs // // Description: // A base class which can copy an array of UIElement to the IDataObject as Xaml format. // It also can retrieve the Xaml data from the IDataObject and create a UIElement array. // // Features: // // History: // 11/17/2004 waynezen: Created // // Copyright (C) 2001 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Windows; using System.Windows.Controls; using System.Windows.Markup; using System.Security; using System.Text; using System.Diagnostics; using MS.Internal; //security helper from PresentationCore namespace MS.Internal.Ink { internal class XamlClipboardData : ElementsClipboardData { //------------------------------------------------------------------------------- // // Constructors // //------------------------------------------------------------------------------- #region Constructors // The default constructor internal XamlClipboardData() { } // The constructor with UIElement[] as an argument internal XamlClipboardData(UIElement[] elements) : base (elements) { } // Checks if the data can be pasted. internal override bool CanPaste(IDataObject dataObject) { // Check if we have Xaml data bool hasXamlData = false; try { hasXamlData = dataObject.GetDataPresent(DataFormats.Xaml, false); } catch ( SecurityException ) { // If we are under the partial trust, the Xaml format will fail when it needs to be registered. // In this case, we should just disable the Paste Xaml format content. hasXamlData = false; } return hasXamlData; } #endregion Constructors //-------------------------------------------------------------------------------- // // Protected Methods // //------------------------------------------------------------------------------- #region Protected Methods // Check if we have data to be copied protected override bool CanCopy() { return Elements != null && Elements.Count != 0; } // Convert the elements to the Xaml and copy the Xaml to the IDataObject /// /// /// /// ////// Critical: Calls critical method /// SecurityHelper.ExtractAppDomainPermissionSetMinusSiteOfOrigin /// /// We call this to ensure that the appdomain permission set is on the clipboard. /// The Clipboard methods use this information to ensure that apps can not paste data /// that was copied in low trust to application to a high trust application /// [SecurityCritical] protected override void DoCopy(IDataObject dataObject) { // Serialize the selected elements and add it to the data object. StringBuilder xmlData = new StringBuilder(); foreach ( UIElement element in Elements ) { string xml; xml = XamlWriter.Save(element); xmlData.Append(xml); } // Set the data object as XML format. dataObject.SetData(DataFormats.Xaml, xmlData.ToString()); // // we need to copy the permission set on the clipboard for // the Clipboard class methods. See security note for details. // PermissionSet permSet = SecurityHelper.ExtractAppDomainPermissionSetMinusSiteOfOrigin(); string setString = permSet.ToString(); Debug.Assert(setString.Length > 0); dataObject.SetData(DataFormats.ApplicationTrust, setString); } // Retrieves the Xaml from the IDataObject and instantiate the elements based on the Xaml protected override void DoPaste(IDataObject dataObject) { ElementList = new List(); // Get the XML data from the data object. string xml = dataObject.GetData(DataFormats.Xaml) as string; if ( !String.IsNullOrEmpty(xml) ) { UIElement element = XamlReader.Load(new System.Xml.XmlTextReader(new System.IO.StringReader(xml))) as UIElement; if (element != null) { ElementList.Add(element); } } } #endregion Protected Methods } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DecoderFallbackWithFailureFlag.cs
- ErrorHandler.cs
- CodeObjectCreateExpression.cs
- EdmSchemaAttribute.cs
- WebSysDisplayNameAttribute.cs
- EncodingDataItem.cs
- WindowInteropHelper.cs
- ServiceEndpointAssociationProvider.cs
- Int16AnimationUsingKeyFrames.cs
- TransformConverter.cs
- XPathAncestorQuery.cs
- RectangleGeometry.cs
- UdpReplyToBehavior.cs
- WebBrowserEvent.cs
- TitleStyle.cs
- MinMaxParagraphWidth.cs
- AsymmetricKeyExchangeDeformatter.cs
- HttpModule.cs
- SqlDataSource.cs
- SchemaImporterExtension.cs
- DefaultPropertyAttribute.cs
- WebPartManagerInternals.cs
- FileLogRecordEnumerator.cs
- ClientSponsor.cs
- PrimaryKeyTypeConverter.cs
- SiblingIterators.cs
- DispatcherExceptionEventArgs.cs
- Path.cs
- MarginCollapsingState.cs
- DataSourceHelper.cs
- WorkflowValidationFailedException.cs
- DataSetFieldSchema.cs
- XmlSchemaSet.cs
- SQLBytesStorage.cs
- _LocalDataStoreMgr.cs
- StyleTypedPropertyAttribute.cs
- NegotiationTokenAuthenticator.cs
- GridViewItemAutomationPeer.cs
- SqlTypesSchemaImporter.cs
- XmlStringTable.cs
- PropertyIdentifier.cs
- ProcessInfo.cs
- MultipleViewPattern.cs
- ProofTokenCryptoHandle.cs
- DefaultEventAttribute.cs
- DockPanel.cs
- ReadWriteSpinLock.cs
- DynamicDocumentPaginator.cs
- PathGradientBrush.cs
- TimeSpanMinutesOrInfiniteConverter.cs
- NetCodeGroup.cs
- DataGridViewRowConverter.cs
- FixedStringLookup.cs
- BackStopAuthenticationModule.cs
- CorrelationResolver.cs
- BitmapFrameEncode.cs
- PolyLineSegment.cs
- DoubleLinkList.cs
- SchemaTypeEmitter.cs
- ResXBuildProvider.cs
- _ListenerResponseStream.cs
- ParallelEnumerableWrapper.cs
- TextRunCacheImp.cs
- LocalFileSettingsProvider.cs
- DataGridDefaultColumnWidthTypeConverter.cs
- FilterElement.cs
- TextInfo.cs
- XmlSchemaObjectCollection.cs
- ProcessModuleCollection.cs
- BamlLocalizableResourceKey.cs
- DataKeyPropertyAttribute.cs
- BitmapDownload.cs
- httpapplicationstate.cs
- ProtocolsConfigurationHandler.cs
- JsonServiceDocumentSerializer.cs
- OciHandle.cs
- GridItemPattern.cs
- WorkflowViewElement.cs
- ProtocolsSection.cs
- SpotLight.cs
- AssemblyNameUtility.cs
- SizeConverter.cs
- DocumentPaginator.cs
- SystemIPAddressInformation.cs
- SwitchLevelAttribute.cs
- DataGridViewTextBoxEditingControl.cs
- Not.cs
- HTTPNotFoundHandler.cs
- ToolStripTextBox.cs
- DataSvcMapFile.cs
- ExpressionBindingCollection.cs
- ArrayList.cs
- Int32Storage.cs
- TimelineGroup.cs
- PnrpPermission.cs
- QilExpression.cs
- Bidi.cs
- SQLChars.cs
- CodeRegionDirective.cs
- BindingCompleteEventArgs.cs