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
- BindingContext.cs
- PrimarySelectionGlyph.cs
- XmlSchemaAnnotated.cs
- SqlErrorCollection.cs
- ModelVisual3D.cs
- PropertyEmitter.cs
- TrustLevel.cs
- SqlUtil.cs
- ClientConvert.cs
- EntityDataSourceValidationException.cs
- SecurityVersion.cs
- DataGridViewHeaderCell.cs
- SafeFileMappingHandle.cs
- AutomationElementCollection.cs
- PropertyEmitterBase.cs
- StubHelpers.cs
- SystemThemeKey.cs
- ParameterToken.cs
- log.cs
- XmlStreamStore.cs
- QilLoop.cs
- Speller.cs
- EpmCustomContentDeSerializer.cs
- FocusWithinProperty.cs
- CanonicalFontFamilyReference.cs
- SqlTopReducer.cs
- ZipIORawDataFileBlock.cs
- GeometryModel3D.cs
- CheckBoxStandardAdapter.cs
- WebReferencesBuildProvider.cs
- SymbolType.cs
- SizeAnimationClockResource.cs
- SafeFindHandle.cs
- HtmlMeta.cs
- BamlTreeNode.cs
- EditorZoneBase.cs
- AccessKeyManager.cs
- DNS.cs
- AncillaryOps.cs
- TreeViewDesigner.cs
- OutputCacheProfileCollection.cs
- StatusBarAutomationPeer.cs
- ManualResetEvent.cs
- XmlObjectSerializerWriteContext.cs
- RoutingExtension.cs
- IdleTimeoutMonitor.cs
- FileFormatException.cs
- DeviceContext2.cs
- PeerObject.cs
- ExtensionSimplifierMarkupObject.cs
- TypeNameConverter.cs
- AssemblyBuilder.cs
- Exception.cs
- DelegateSerializationHolder.cs
- WindowsFormsDesignerOptionService.cs
- IDictionary.cs
- Brushes.cs
- PerfCounterSection.cs
- PinnedBufferMemoryStream.cs
- WebHeaderCollection.cs
- SkinBuilder.cs
- CssTextWriter.cs
- MimeReflector.cs
- SQLCharsStorage.cs
- Blend.cs
- XpsException.cs
- SpecialNameAttribute.cs
- X509Certificate.cs
- CountAggregationOperator.cs
- SynchronizationLockException.cs
- SQLMoney.cs
- TreeNodeCollectionEditorDialog.cs
- RequestCacheValidator.cs
- SimpleFieldTemplateFactory.cs
- XmlNamespaceManager.cs
- SiteOfOriginContainer.cs
- CodeConditionStatement.cs
- InvalidCommandTreeException.cs
- WindowsFormsHost.cs
- login.cs
- PointAnimationUsingKeyFrames.cs
- XmlSiteMapProvider.cs
- AndMessageFilterTable.cs
- LogLogRecord.cs
- DataControlPagerLinkButton.cs
- SQLDateTimeStorage.cs
- Int16.cs
- __Filters.cs
- WindowsStartMenu.cs
- ItemCheckedEvent.cs
- ObfuscateAssemblyAttribute.cs
- DesignerAttribute.cs
- ExtractedStateEntry.cs
- AVElementHelper.cs
- diagnosticsswitches.cs
- DocumentPageHost.cs
- DataGridClipboardCellContent.cs
- GenericUriParser.cs
- HandleRef.cs
- AsnEncodedData.cs