Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Core / CSharp / System / Windows / Documents / DocumentPaginator.cs / 1 / DocumentPaginator.cs
//---------------------------------------------------------------------------- // // Copyright (C) Microsoft Corporation. All rights reserved. // // File: DocumentPaginator.cs // // Description: This is the abstract base class for all paginating layouts. // It provides default implementations for the asynchronous // versions of GetPage and ComputePageCount. // // History: // 08/29/2005 : grzegorz - created. // //--------------------------------------------------------------------------- using System.ComponentModel; // AsyncCompletedEventArgs using System.Windows.Media; // Visual using MS.Internal.PresentationCore; // SR, SRID namespace System.Windows.Documents { ////// This is the abstract base class for all paginating layouts. It /// provides default implementations for the asynchronous versions of /// GetPage and ComputePageCount. /// public abstract class DocumentPaginator { //------------------------------------------------------------------- // // Public Methods // //------------------------------------------------------------------- #region Public Methods ////// Retrieves the DocumentPage for the given page number. PageNumber /// is zero-based. /// /// Page number. ////// Returns DocumentPage.Missing if the given page does not exist. /// ////// Multiple requests for the same page number may return the same /// object (this is implementation specific). /// ////// Throws ArgumentOutOfRangeException if PageNumber is negative. /// public abstract DocumentPage GetPage(int pageNumber); ////// Async version of /// Page number. ////// /// Throws ArgumentOutOfRangeException if PageNumber is negative. /// public virtual void GetPageAsync(int pageNumber) { GetPageAsync(pageNumber, null); } ////// Async version of /// Page number. /// Unique identifier for the asynchronous task. ////// /// Throws ArgumentOutOfRangeException if PageNumber is negative. /// public virtual void GetPageAsync(int pageNumber, object userState) { DocumentPage page; // Page number cannot be negative. if (pageNumber < 0) { throw new ArgumentOutOfRangeException("pageNumber", SR.Get(SRID.PaginatorNegativePageNumber)); } page = GetPage(pageNumber); OnGetPageCompleted(new GetPageCompletedEventArgs(page, pageNumber, null, false, userState)); } ////// Computes the number of pages of content. IsPageCountValid will be /// True immediately after this is called. /// ////// If content is modified or PageSize is changed (or any other change /// that causes a repagination) after this method is called, /// IsPageCountValid will likely revert to False. /// public virtual void ComputePageCount() { // Force pagination of entire content. GetPage(int.MaxValue); } ////// Async version of public virtual void ComputePageCountAsync() { ComputePageCountAsync(null); } ////// /// Async version of /// Unique identifier for the asynchronous task. public virtual void ComputePageCountAsync(object userState) { ComputePageCount(); OnComputePageCountCompleted(new AsyncCompletedEventArgs(null, false, userState)); } ////// /// Cancels all asynchronous calls made with the given userState. /// If userState is NULL, all asynchronous calls are cancelled. /// /// Unique identifier for the asynchronous task. public virtual void CancelAsync(object userState) { } #endregion Public Methods //-------------------------------------------------------------------- // // Public Properties // //------------------------------------------------------------------- #region Public Properties ////// Whether PageCount is currently valid. If False, then the value of /// PageCount is the number of pages that have currently been formatted. /// ////// This value may revert to False after being True, in cases where /// PageSize or content changes, forcing a repagination. /// public abstract bool IsPageCountValid { get; } ////// If IsPageCountValid is True, this value is the number of pages /// of content. If False, this is the number of pages that have /// currently been formatted. /// ////// Value may change depending upon changes in PageSize or content changes. /// public abstract int PageCount { get; } ////// The suggested size for formatting pages. /// ////// Note that the paginator may override the specified page size. Users /// should check DocumentPage.Size. /// public abstract Size PageSize { get; set; } ////// A pointer back to the element being paginated. /// public abstract IDocumentPaginatorSource Source { get; } #endregion Public Properties //-------------------------------------------------------------------- // // Public Events // //-------------------------------------------------------------------- #region Public Events ////// Fired when a GetPageAsync call has completed. /// public event GetPageCompletedEventHandler GetPageCompleted; ////// Fired when a ComputePageCountAsync call has completed. /// public event AsyncCompletedEventHandler ComputePageCountCompleted; ////// Fired when one of the properties of a DocumentPage changes. /// Affected pages must be re-fetched if currently used. /// ////// Existing DocumentPage objects may be destroyed when this /// event is fired. /// public event PagesChangedEventHandler PagesChanged; #endregion Public Events //------------------------------------------------------------------- // // Protected Methods // //-------------------------------------------------------------------- #region Protected Methods ////// Override for subclasses that wish to add logic when this event is fired. /// /// Event arguments for the GetPageCompleted event. protected virtual void OnGetPageCompleted(GetPageCompletedEventArgs e) { if (this.GetPageCompleted != null) { this.GetPageCompleted(this, e); } } ////// Override for subclasses that wish to add logic when this event is fired. /// /// Event arguments for the ComputePageCountCompleted event. protected virtual void OnComputePageCountCompleted(AsyncCompletedEventArgs e) { if (this.ComputePageCountCompleted != null) { this.ComputePageCountCompleted(this, e); } } ////// Override for subclasses that wish to add logic when this event is fired. /// /// Event arguments for the PagesChanged event. protected virtual void OnPagesChanged(PagesChangedEventArgs e) { if (this.PagesChanged != null) { this.PagesChanged(this, e); } } #endregion Protected Methods } } // 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. // // File: DocumentPaginator.cs // // Description: This is the abstract base class for all paginating layouts. // It provides default implementations for the asynchronous // versions of GetPage and ComputePageCount. // // History: // 08/29/2005 : grzegorz - created. // //--------------------------------------------------------------------------- using System.ComponentModel; // AsyncCompletedEventArgs using System.Windows.Media; // Visual using MS.Internal.PresentationCore; // SR, SRID namespace System.Windows.Documents { ////// This is the abstract base class for all paginating layouts. It /// provides default implementations for the asynchronous versions of /// GetPage and ComputePageCount. /// public abstract class DocumentPaginator { //------------------------------------------------------------------- // // Public Methods // //------------------------------------------------------------------- #region Public Methods ////// Retrieves the DocumentPage for the given page number. PageNumber /// is zero-based. /// /// Page number. ////// Returns DocumentPage.Missing if the given page does not exist. /// ////// Multiple requests for the same page number may return the same /// object (this is implementation specific). /// ////// Throws ArgumentOutOfRangeException if PageNumber is negative. /// public abstract DocumentPage GetPage(int pageNumber); ////// Async version of /// Page number. ////// /// Throws ArgumentOutOfRangeException if PageNumber is negative. /// public virtual void GetPageAsync(int pageNumber) { GetPageAsync(pageNumber, null); } ////// Async version of /// Page number. /// Unique identifier for the asynchronous task. ////// /// Throws ArgumentOutOfRangeException if PageNumber is negative. /// public virtual void GetPageAsync(int pageNumber, object userState) { DocumentPage page; // Page number cannot be negative. if (pageNumber < 0) { throw new ArgumentOutOfRangeException("pageNumber", SR.Get(SRID.PaginatorNegativePageNumber)); } page = GetPage(pageNumber); OnGetPageCompleted(new GetPageCompletedEventArgs(page, pageNumber, null, false, userState)); } ////// Computes the number of pages of content. IsPageCountValid will be /// True immediately after this is called. /// ////// If content is modified or PageSize is changed (or any other change /// that causes a repagination) after this method is called, /// IsPageCountValid will likely revert to False. /// public virtual void ComputePageCount() { // Force pagination of entire content. GetPage(int.MaxValue); } ////// Async version of public virtual void ComputePageCountAsync() { ComputePageCountAsync(null); } ////// /// Async version of /// Unique identifier for the asynchronous task. public virtual void ComputePageCountAsync(object userState) { ComputePageCount(); OnComputePageCountCompleted(new AsyncCompletedEventArgs(null, false, userState)); } ////// /// Cancels all asynchronous calls made with the given userState. /// If userState is NULL, all asynchronous calls are cancelled. /// /// Unique identifier for the asynchronous task. public virtual void CancelAsync(object userState) { } #endregion Public Methods //-------------------------------------------------------------------- // // Public Properties // //------------------------------------------------------------------- #region Public Properties ////// Whether PageCount is currently valid. If False, then the value of /// PageCount is the number of pages that have currently been formatted. /// ////// This value may revert to False after being True, in cases where /// PageSize or content changes, forcing a repagination. /// public abstract bool IsPageCountValid { get; } ////// If IsPageCountValid is True, this value is the number of pages /// of content. If False, this is the number of pages that have /// currently been formatted. /// ////// Value may change depending upon changes in PageSize or content changes. /// public abstract int PageCount { get; } ////// The suggested size for formatting pages. /// ////// Note that the paginator may override the specified page size. Users /// should check DocumentPage.Size. /// public abstract Size PageSize { get; set; } ////// A pointer back to the element being paginated. /// public abstract IDocumentPaginatorSource Source { get; } #endregion Public Properties //-------------------------------------------------------------------- // // Public Events // //-------------------------------------------------------------------- #region Public Events ////// Fired when a GetPageAsync call has completed. /// public event GetPageCompletedEventHandler GetPageCompleted; ////// Fired when a ComputePageCountAsync call has completed. /// public event AsyncCompletedEventHandler ComputePageCountCompleted; ////// Fired when one of the properties of a DocumentPage changes. /// Affected pages must be re-fetched if currently used. /// ////// Existing DocumentPage objects may be destroyed when this /// event is fired. /// public event PagesChangedEventHandler PagesChanged; #endregion Public Events //------------------------------------------------------------------- // // Protected Methods // //-------------------------------------------------------------------- #region Protected Methods ////// Override for subclasses that wish to add logic when this event is fired. /// /// Event arguments for the GetPageCompleted event. protected virtual void OnGetPageCompleted(GetPageCompletedEventArgs e) { if (this.GetPageCompleted != null) { this.GetPageCompleted(this, e); } } ////// Override for subclasses that wish to add logic when this event is fired. /// /// Event arguments for the ComputePageCountCompleted event. protected virtual void OnComputePageCountCompleted(AsyncCompletedEventArgs e) { if (this.ComputePageCountCompleted != null) { this.ComputePageCountCompleted(this, e); } } ////// Override for subclasses that wish to add logic when this event is fired. /// /// Event arguments for the PagesChanged event. protected virtual void OnPagesChanged(PagesChangedEventArgs e) { if (this.PagesChanged != null) { this.PagesChanged(this, e); } } #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
- ComplexObject.cs
- Quaternion.cs
- TerminatorSinks.cs
- XmlRootAttribute.cs
- DataGridViewComboBoxCell.cs
- DetailsViewUpdateEventArgs.cs
- AnimationStorage.cs
- SqlUDTStorage.cs
- AttributeData.cs
- AmbiguousMatchException.cs
- RegexMatchCollection.cs
- selecteditemcollection.cs
- Point3DAnimation.cs
- DataSourceControl.cs
- RecognizedAudio.cs
- SecurityDescriptor.cs
- XmlNodeReader.cs
- GcSettings.cs
- Visual3D.cs
- StyleModeStack.cs
- ThreadAbortException.cs
- StreamGeometry.cs
- StackOverflowException.cs
- ButtonRenderer.cs
- MetadataArtifactLoaderResource.cs
- ZoneIdentityPermission.cs
- MetadataArtifactLoaderXmlReaderWrapper.cs
- ApplicationCommands.cs
- WinFormsUtils.cs
- ExceptionCollection.cs
- WebServiceParameterData.cs
- DataGridViewCell.cs
- LoginUtil.cs
- OptimisticConcurrencyException.cs
- ListDataBindEventArgs.cs
- ConfigurationStrings.cs
- NativeMethods.cs
- DbProviderServices.cs
- WebPartEditorApplyVerb.cs
- WindowShowOrOpenTracker.cs
- FormViewRow.cs
- SplitterPanel.cs
- MultilineStringConverter.cs
- UnauthorizedAccessException.cs
- TypefaceMap.cs
- SqlDataSourceCommandEventArgs.cs
- Persist.cs
- DataSourceDesigner.cs
- CompilerHelpers.cs
- OleDbFactory.cs
- CodeTryCatchFinallyStatement.cs
- CompensatableSequenceActivity.cs
- XpsS0ValidatingLoader.cs
- CorrelationService.cs
- HitTestFilterBehavior.cs
- CurrentChangingEventArgs.cs
- SmiRequestExecutor.cs
- ObjectViewFactory.cs
- DateTimeValueSerializerContext.cs
- BitVector32.cs
- HtmlLink.cs
- QilScopedVisitor.cs
- SetStateDesigner.cs
- XmlSchemaInferenceException.cs
- WhitespaceRuleReader.cs
- GradientStop.cs
- StaticExtension.cs
- SchemaHelper.cs
- CodeVariableReferenceExpression.cs
- ScriptDescriptor.cs
- EdmFunction.cs
- EncodingFallbackAwareXmlTextWriter.cs
- DbProviderFactory.cs
- DrawingDrawingContext.cs
- CardSpacePolicyElement.cs
- DebuggerAttributes.cs
- ControlPersister.cs
- PipelineModuleStepContainer.cs
- UTF32Encoding.cs
- ModelFunctionTypeElement.cs
- SubqueryRules.cs
- SymbolTable.cs
- HttpGetProtocolReflector.cs
- MessageSecurityOverMsmqElement.cs
- Menu.cs
- safelink.cs
- XmlParser.cs
- CodeGeneratorOptions.cs
- LongValidatorAttribute.cs
- CodeDelegateInvokeExpression.cs
- NonceCache.cs
- BitmapImage.cs
- ResourceProperty.cs
- XmlPropertyBag.cs
- SafeHandle.cs
- XPathDocumentBuilder.cs
- QueryResults.cs
- DecimalConverter.cs
- RequestContext.cs
- TextWriter.cs