Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Core / CSharp / System / Windows / DataObjectPastingEventArgs.cs / 1 / DataObjectPastingEventArgs.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: DataObject.Pasting event arguments // //--------------------------------------------------------------------------- using System; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows { ////// Arguments for the DataObject.Pasting event. /// /// The DataObject.Pasting event is raising when an editor /// has inspected all formats available on a data object /// has choosen one of them as the most suitable and /// is ready for pasting it into a current selection. /// An application can inspect a DataObject, change, remove or /// add some data formats into it and decide whether to proceed /// with the pasting or cancel it. /// public sealed class DataObjectPastingEventArgs : DataObjectEventArgs { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors ////// Creates a DataObjectPastingEvent. /// This object created by editors executing a Copy/Paste /// and Drag/Drop comands. /// /// /// DataObject extracted from the Clipboard and intended /// for using in pasting. /// /// /// A flag indicating whether this operation is part of drag/drop. /// Pasting event is fired on drop. /// /// /// String identifying a format an editor has choosen /// as a candidate for applying in Paste operation. /// An application can change this choice after inspecting /// the content of data object. /// public DataObjectPastingEventArgs(IDataObject dataObject, bool isDragDrop, string formatToApply) // : base(System.Windows.DataObject.PastingEvent, isDragDrop) { if (dataObject == null) { throw new ArgumentNullException("dataObject"); } if (formatToApply == null) { throw new ArgumentNullException("formatToApply"); } if (formatToApply == string.Empty) { throw new ArgumentException(SR.Get(SRID.DataObject_EmptyFormatNotAllowed)); } if (!dataObject.GetDataPresent(formatToApply)) { throw new ArgumentException(SR.Get(SRID.DataObject_DataFormatNotPresentOnDataObject, formatToApply)); } _originalDataObject = dataObject; _dataObject = dataObject; _formatToApply = formatToApply; } #endregion Constructors //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- #region Public Properties ////// DataObject original extracted from the Clipboard. /// It's content cannot be changed to avoid side effects /// on subsequent paste operations in this or other /// applications. /// To change the content of a data object custon handler /// must create new instance of an object and assign it /// to DataObject property, which will be used by /// an editor to perform a paste operation. /// Initially both properties DataObject and SourceDataObject /// have the same value. DataObject property can be changed /// by a custom handler, SourceDataObject keeps original value. /// SourceDataObject can be useful in a case when several /// independent DataObjectPastingEventHandlers workone after onother. /// After one handler added its new DataObject SourceDataObject /// property allows other handlers to access original clipboard. /// public IDataObject SourceDataObject { get { return _originalDataObject; } } ////// DataObject suggested for a pasting operation. /// Originally this property has the same value as SourceDataObject. /// Custom handlers can change it by assigning some new dataobject. /// This new dataobject must have at least one format set to it, /// which will become a suggested format (FormatToAppy) when /// dataobject is assigned. Thus FormatToAlly is always consistent /// with current DataObject (but not necessarily with SourceDataObject). /// public IDataObject DataObject { get { return _dataObject; } set { string[] availableFormats; if (value == null) { throw new ArgumentNullException("value"); } availableFormats = value.GetFormats(/*autoConvert:*/false); if (availableFormats == null || availableFormats.Length == 0) { throw new ArgumentException(SR.Get(SRID.DataObject_DataObjectMustHaveAtLeastOneFormat)); } _dataObject = value; _formatToApply = availableFormats[0]; } } ////// String identifying a format an editor has choosen /// as a candidate for applying in Paste operation. /// An application can change this choice after inspecting /// the content of data object. /// The value assigned to FormatToApply must be present /// on a current DataObject. The invariant is /// this.DataObject.GetDataPresent(this.FormatToApply) === true. /// public string FormatToApply { get { return _formatToApply; } set { if (value == null) { throw new ArgumentNullException("value"); } if (!_dataObject.GetDataPresent(value)) { throw new ArgumentException(SR.Get(SRID.DataObject_DataFormatNotPresentOnDataObject, value)); } _formatToApply = value; } } #endregion Public Properties #region Protected Methods //------------------------------------------------------ // // Protected Methods // //------------------------------------------------------ ////// The mechanism used to call the type-specific handler on the target. /// /// /// The generic handler to call in a type-specific way. /// /// /// The target to call the handler on. /// protected override void InvokeEventHandler(Delegate genericHandler, object genericTarget) { DataObjectPastingEventHandler handler = (DataObjectPastingEventHandler)genericHandler; handler(genericTarget, this); } #endregion Protected Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private IDataObject _originalDataObject; private IDataObject _dataObject; private string _formatToApply; #endregion Private Fields } ////// The delegate to use for handlers that receive the DataObject.Pasting event. /// ////// An event handler for a DataObject.Pasting event. /// It is called when ah editor already made a decision /// what format (from available on the Cliipboard) /// to apply to selection. With this handler an application /// has a chance to inspect a content of DataObject extracted /// from the Clipboard and decide what format to use instead. /// There are four options for the handler here: /// a) to cancel the whole Paste/Drop event by calling /// DataObjectPastingEventArgs.CancelCommand method, /// b) change an editor's choice of format by setting /// new value for DataObjectPastingEventArgs.FormatToApply /// property (the new value is supposed to be understandable /// by an editor - it's application's code responsibility /// to act consistently with an editor; example is to /// replace "rich text" (xml) format to "plain text" format - /// both understandable by the TextEditor). /// c) choose it's own custom format, apply it to a selection /// and cancel a command for the following execution in an /// editor by calling DataObjectPastingEventArgs.CancelCommand /// method. This is how custom data formats are expected /// to be pasted. /// d) create new piece of data and suggest it in a new instance /// of DataObject. newDataObject instance must be created /// with some format set to it and assigned to DataObject property. /// SourceDataObject property keeps an original DataObject /// came from the Clipboard. This original dataobject cannot be changed. /// So by assigning new dataobject a custom handler can suggest /// ned data formats or change existing dataformats. /// public delegate void DataObjectPastingEventHandler(object sender, DataObjectPastingEventArgs e); } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: DataObject.Pasting event arguments // //--------------------------------------------------------------------------- using System; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows { ////// Arguments for the DataObject.Pasting event. /// /// The DataObject.Pasting event is raising when an editor /// has inspected all formats available on a data object /// has choosen one of them as the most suitable and /// is ready for pasting it into a current selection. /// An application can inspect a DataObject, change, remove or /// add some data formats into it and decide whether to proceed /// with the pasting or cancel it. /// public sealed class DataObjectPastingEventArgs : DataObjectEventArgs { //----------------------------------------------------- // // Constructors // //----------------------------------------------------- #region Constructors ////// Creates a DataObjectPastingEvent. /// This object created by editors executing a Copy/Paste /// and Drag/Drop comands. /// /// /// DataObject extracted from the Clipboard and intended /// for using in pasting. /// /// /// A flag indicating whether this operation is part of drag/drop. /// Pasting event is fired on drop. /// /// /// String identifying a format an editor has choosen /// as a candidate for applying in Paste operation. /// An application can change this choice after inspecting /// the content of data object. /// public DataObjectPastingEventArgs(IDataObject dataObject, bool isDragDrop, string formatToApply) // : base(System.Windows.DataObject.PastingEvent, isDragDrop) { if (dataObject == null) { throw new ArgumentNullException("dataObject"); } if (formatToApply == null) { throw new ArgumentNullException("formatToApply"); } if (formatToApply == string.Empty) { throw new ArgumentException(SR.Get(SRID.DataObject_EmptyFormatNotAllowed)); } if (!dataObject.GetDataPresent(formatToApply)) { throw new ArgumentException(SR.Get(SRID.DataObject_DataFormatNotPresentOnDataObject, formatToApply)); } _originalDataObject = dataObject; _dataObject = dataObject; _formatToApply = formatToApply; } #endregion Constructors //------------------------------------------------------ // // Public Properties // //----------------------------------------------------- #region Public Properties ////// DataObject original extracted from the Clipboard. /// It's content cannot be changed to avoid side effects /// on subsequent paste operations in this or other /// applications. /// To change the content of a data object custon handler /// must create new instance of an object and assign it /// to DataObject property, which will be used by /// an editor to perform a paste operation. /// Initially both properties DataObject and SourceDataObject /// have the same value. DataObject property can be changed /// by a custom handler, SourceDataObject keeps original value. /// SourceDataObject can be useful in a case when several /// independent DataObjectPastingEventHandlers workone after onother. /// After one handler added its new DataObject SourceDataObject /// property allows other handlers to access original clipboard. /// public IDataObject SourceDataObject { get { return _originalDataObject; } } ////// DataObject suggested for a pasting operation. /// Originally this property has the same value as SourceDataObject. /// Custom handlers can change it by assigning some new dataobject. /// This new dataobject must have at least one format set to it, /// which will become a suggested format (FormatToAppy) when /// dataobject is assigned. Thus FormatToAlly is always consistent /// with current DataObject (but not necessarily with SourceDataObject). /// public IDataObject DataObject { get { return _dataObject; } set { string[] availableFormats; if (value == null) { throw new ArgumentNullException("value"); } availableFormats = value.GetFormats(/*autoConvert:*/false); if (availableFormats == null || availableFormats.Length == 0) { throw new ArgumentException(SR.Get(SRID.DataObject_DataObjectMustHaveAtLeastOneFormat)); } _dataObject = value; _formatToApply = availableFormats[0]; } } ////// String identifying a format an editor has choosen /// as a candidate for applying in Paste operation. /// An application can change this choice after inspecting /// the content of data object. /// The value assigned to FormatToApply must be present /// on a current DataObject. The invariant is /// this.DataObject.GetDataPresent(this.FormatToApply) === true. /// public string FormatToApply { get { return _formatToApply; } set { if (value == null) { throw new ArgumentNullException("value"); } if (!_dataObject.GetDataPresent(value)) { throw new ArgumentException(SR.Get(SRID.DataObject_DataFormatNotPresentOnDataObject, value)); } _formatToApply = value; } } #endregion Public Properties #region Protected Methods //------------------------------------------------------ // // Protected Methods // //------------------------------------------------------ ////// The mechanism used to call the type-specific handler on the target. /// /// /// The generic handler to call in a type-specific way. /// /// /// The target to call the handler on. /// protected override void InvokeEventHandler(Delegate genericHandler, object genericTarget) { DataObjectPastingEventHandler handler = (DataObjectPastingEventHandler)genericHandler; handler(genericTarget, this); } #endregion Protected Methods //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Fields private IDataObject _originalDataObject; private IDataObject _dataObject; private string _formatToApply; #endregion Private Fields } ////// The delegate to use for handlers that receive the DataObject.Pasting event. /// ////// An event handler for a DataObject.Pasting event. /// It is called when ah editor already made a decision /// what format (from available on the Cliipboard) /// to apply to selection. With this handler an application /// has a chance to inspect a content of DataObject extracted /// from the Clipboard and decide what format to use instead. /// There are four options for the handler here: /// a) to cancel the whole Paste/Drop event by calling /// DataObjectPastingEventArgs.CancelCommand method, /// b) change an editor's choice of format by setting /// new value for DataObjectPastingEventArgs.FormatToApply /// property (the new value is supposed to be understandable /// by an editor - it's application's code responsibility /// to act consistently with an editor; example is to /// replace "rich text" (xml) format to "plain text" format - /// both understandable by the TextEditor). /// c) choose it's own custom format, apply it to a selection /// and cancel a command for the following execution in an /// editor by calling DataObjectPastingEventArgs.CancelCommand /// method. This is how custom data formats are expected /// to be pasted. /// d) create new piece of data and suggest it in a new instance /// of DataObject. newDataObject instance must be created /// with some format set to it and assigned to DataObject property. /// SourceDataObject property keeps an original DataObject /// came from the Clipboard. This original dataobject cannot be changed. /// So by assigning new dataobject a custom handler can suggest /// ned data formats or change existing dataformats. /// public delegate void DataObjectPastingEventHandler(object sender, DataObjectPastingEventArgs e); } // 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
- ToolStripOverflowButton.cs
- TemplateBindingExpression.cs
- SwitchExpression.cs
- DesignerFrame.cs
- TextEndOfSegment.cs
- ApplicationFileParser.cs
- OdbcConnectionString.cs
- RowBinding.cs
- PrefixQName.cs
- CoTaskMemUnicodeSafeHandle.cs
- StylesEditorDialog.cs
- ControlBindingsCollection.cs
- AsynchronousChannel.cs
- SimplePropertyEntry.cs
- SerializationInfoEnumerator.cs
- CodeTypeConstructor.cs
- SplashScreen.cs
- ProvideValueServiceProvider.cs
- NodeCounter.cs
- XmlHierarchyData.cs
- DashStyle.cs
- ProjectionPlan.cs
- PropertyCondition.cs
- COAUTHINFO.cs
- MenuItemStyleCollection.cs
- DbConnectionPoolCounters.cs
- RijndaelManaged.cs
- HtmlTableRow.cs
- ListParaClient.cs
- DataSourceXmlElementAttribute.cs
- DirectoryObjectSecurity.cs
- SystemNetworkInterface.cs
- TabControl.cs
- CompModSwitches.cs
- Label.cs
- UnescapedXmlDiagnosticData.cs
- TextRunTypographyProperties.cs
- Registry.cs
- ListViewInsertionMark.cs
- ComboBox.cs
- XmlReader.cs
- EventHandlersDesigner.cs
- ThreadLocal.cs
- Literal.cs
- DataGridTablesFactory.cs
- PermissionRequestEvidence.cs
- DispatcherHookEventArgs.cs
- DetailsViewUpdatedEventArgs.cs
- ValidatingReaderNodeData.cs
- HotSpot.cs
- UnsafeNativeMethods.cs
- SafeWaitHandle.cs
- OleServicesContext.cs
- PerformanceCounter.cs
- MobileErrorInfo.cs
- SpnegoTokenProvider.cs
- WebPartDisplayModeCollection.cs
- ImportDesigner.xaml.cs
- HtmlWindow.cs
- FactoryId.cs
- ComponentSerializationService.cs
- _SslSessionsCache.cs
- UndoManager.cs
- KeyInfo.cs
- ApplicationId.cs
- XmlException.cs
- CompilerError.cs
- VirtualizingStackPanel.cs
- GuidelineCollection.cs
- WeakReferenceEnumerator.cs
- VersionedStreamOwner.cs
- Logging.cs
- TypeElement.cs
- EntityParameter.cs
- CustomBindingCollectionElement.cs
- SaveFileDialog.cs
- FeatureManager.cs
- LineSegment.cs
- DataStorage.cs
- MetadataItem_Static.cs
- MenuItemAutomationPeer.cs
- ChannelSinkStacks.cs
- HttpCapabilitiesSectionHandler.cs
- DockingAttribute.cs
- DataKeyArray.cs
- SpecialNameAttribute.cs
- CompilerInfo.cs
- DocumentationServerProtocol.cs
- ConfigXmlComment.cs
- XmlComplianceUtil.cs
- EditorPartCollection.cs
- ResourceDisplayNameAttribute.cs
- ConnectionsZone.cs
- SerializationObjectManager.cs
- NavigatorOutput.cs
- TdsEnums.cs
- XmlDocument.cs
- XamlInt32CollectionSerializer.cs
- TcpServerChannel.cs
- EntityModelBuildProvider.cs