Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / MS / Internal / Ink / ExtendedProperty.cs / 1 / ExtendedProperty.cs
//------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------- using MS.Utility; using System; using System.IO; using System.Collections; using System.Runtime.InteropServices; using System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; using System.Text; using MS.Internal.Ink.InkSerializedFormat; using SR=MS.Internal.PresentationCore.SR; using SRID=MS.Internal.PresentationCore.SRID; namespace System.Windows.Ink { ////// Drawing Attribute Key/Value pair for specifying each attribute /// internal sealed class ExtendedProperty { ////// Create a new drawing attribute with the specified key and value /// /// Identifier of attribute /// Attribute value - not that the Type for value is tied to the id ///Value type must be compatible with attribute Id internal ExtendedProperty(Guid id, object value) { if (id == Guid.Empty) { throw new ArgumentException(SR.Get(SRID.InvalidGuid)); } _id = id; Value = value; } ///Returns a value that can be used to store and lookup /// ExtendedProperty objects in a hash table public override int GetHashCode() { return Id.GetHashCode() ^ Value.GetHashCode(); } ///Determine if two ExtendedProperty objects are equal public override bool Equals(object obj) { if (obj == null || obj.GetType() != GetType()) { return false; } ExtendedProperty that = (ExtendedProperty)obj; if (that.Id == this.Id) { Type type1 = this.Value.GetType(); Type type2 = that.Value.GetType(); if (type1.IsArray && type2.IsArray) { Type elementType1 = type1.GetElementType(); Type elementType2 = type2.GetElementType(); if (elementType1 == elementType2 && elementType1.IsValueType && type1.GetArrayRank() == 1 && elementType2.IsValueType && type2.GetArrayRank() == 1) { Array array1 = (Array)this.Value; Array array2 = (Array)that.Value; if (array1.Length == array2.Length) { for (int i = 0; i < array1.Length; i++) { if (!array1.GetValue(i).Equals(array2.GetValue(i))) { return false; } } return true; } } } else { return that.Value.Equals(this.Value); } } return false; } ///Overload of the equality operator for comparing /// two ExtendedProperty objects public static bool operator ==(ExtendedProperty first, ExtendedProperty second) { if ((object)first == null && (object)second == null) { return true; } else if ((object)first == null || (object)second == null) { return false; } else { return first.Equals(second); } } ///Compare two custom attributes for Id and value inequality ///Value comparison is performed based on Value.Equals public static bool operator !=(ExtendedProperty first, ExtendedProperty second) { return !(first == second); } ////// Returns a debugger-friendly version of the ExtendedProperty /// ///public override string ToString() { string val; if (Value == null) { val = " "; } else if (Value is string) { val = "\"" + Value.ToString() + "\""; } else { val = Value.ToString(); } return KnownIds.ConvertToString(Id) + "," + val; } /// /// Retrieve the Identifier, or key, for Drawing Attribute key/value pair /// internal Guid Id { get { return _id; } } ////// Set or retrieve the value for ExtendedProperty key/value pair /// ///Value type must be compatible with attribute Id ///Value can be null. internal object Value { get { return _value; } set { if (value == null) { throw new ArgumentNullException("value"); } // validate the type information for the id against the id ExtendedPropertySerializer.Validate(_id, value); _value = value; } } ////// Creates a copy of the Guid and Value /// ///internal ExtendedProperty Clone() { // // the only properties we accept are value types or arrays of // value types with the exception of string. // Guid guid = _id; //Guid is a ValueType that copies on assignment Type type = _value.GetType(); // // check for the very common, copy on assignment // types (ValueType or string) // if (type.IsValueType || type == typeof(string)) { // // either ValueType or string is passed by value // return new ExtendedProperty(guid, _value); } else if (type.IsArray) { Type elementType = type.GetElementType(); if (elementType.IsValueType && type.GetArrayRank() == 1) { // // copy the array memebers, which we know are copy // on assignment value types // Array newArray = Array.CreateInstance(elementType, ((Array)_value).Length); Array.Copy((Array)_value, newArray, ((Array)_value).Length); return new ExtendedProperty(guid, newArray); } } // // we didn't find a type we expect, throw // throw new InvalidOperationException(SR.Get(SRID.InvalidDataTypeForExtendedProperty)); } private Guid _id; // id of attribute private object _value; // data in attribute } } // 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
- ProvidersHelper.cs
- SimplePropertyEntry.cs
- AnimationClock.cs
- DBAsyncResult.cs
- DynamicEntity.cs
- PostBackOptions.cs
- LoginStatusDesigner.cs
- Fonts.cs
- OleDbFactory.cs
- StorageRoot.cs
- ProviderUtil.cs
- RequestCacheValidator.cs
- FormViewDeletedEventArgs.cs
- HtmlFormParameterReader.cs
- WebPartConnection.cs
- XmlSchemaAttributeGroup.cs
- DrawingAttributesDefaultValueFactory.cs
- WebConfigurationHost.cs
- CompositeFontInfo.cs
- MdiWindowListItemConverter.cs
- File.cs
- DateTimeHelper.cs
- EdmProviderManifest.cs
- OpCopier.cs
- ListItemCollection.cs
- ProtocolsSection.cs
- UIServiceHelper.cs
- VirtualPathUtility.cs
- WeakReferenceEnumerator.cs
- DataBindingCollection.cs
- ExpanderAutomationPeer.cs
- MembershipUser.cs
- AutoCompleteStringCollection.cs
- BooleanAnimationBase.cs
- EntityAdapter.cs
- BooleanFunctions.cs
- FileEnumerator.cs
- RelationshipConstraintValidator.cs
- FilterException.cs
- Shape.cs
- RayHitTestParameters.cs
- EtwTrace.cs
- TrackingMemoryStreamFactory.cs
- ShaperBuffers.cs
- SystemColors.cs
- Debug.cs
- CodeMemberMethod.cs
- ParameterModifier.cs
- ToolStripItem.cs
- ToolStripDropDownClosingEventArgs.cs
- PlacementWorkspace.cs
- FrameworkContentElement.cs
- IsolatedStorageFilePermission.cs
- Size3DValueSerializer.cs
- PerformanceCounterPermissionAttribute.cs
- WebPartVerb.cs
- CapabilitiesRule.cs
- PackageRelationshipSelector.cs
- FirstMatchCodeGroup.cs
- SmiEventSink_Default.cs
- DataGrid.cs
- WebPartDeleteVerb.cs
- UrlPropertyAttribute.cs
- xamlnodes.cs
- StreamWithDictionary.cs
- SecurityContext.cs
- Deflater.cs
- MergeLocalizationDirectives.cs
- ReceiveSecurityHeaderElementManager.cs
- ServiceThrottle.cs
- Mapping.cs
- GroupDescription.cs
- SettingsSection.cs
- GridViewSelectEventArgs.cs
- ReferencedType.cs
- LongTypeConverter.cs
- ToolStripHighContrastRenderer.cs
- ColorContext.cs
- ClientScriptManagerWrapper.cs
- DataGridViewTopLeftHeaderCell.cs
- GridViewColumnHeader.cs
- TextBreakpoint.cs
- mongolianshape.cs
- ExtenderProvidedPropertyAttribute.cs
- PrintPreviewControl.cs
- MetadataArtifactLoaderResource.cs
- Style.cs
- IOException.cs
- XamlToRtfParser.cs
- InkSerializer.cs
- assertwrapper.cs
- XmlSchemaSimpleType.cs
- DynamicRenderer.cs
- BuildProviderAppliesToAttribute.cs
- xmlformatgeneratorstatics.cs
- Item.cs
- GlyphTypeface.cs
- Int64Storage.cs
- EntityDataSourceEntitySetNameItem.cs
- SystemPens.cs