Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Presentation / System / Activities / Presentation / Base / Interaction / Model / ModelProperty.cs / 1305376 / ModelProperty.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Activities.Presentation.Model { using System.Activities.Presentation.Internal.Properties; using System; using System.ComponentModel; using System.Diagnostics.CodeAnalysis; using System.Globalization; using System.Runtime; ////// An ModelProperty represents a property on an item. ModelProperties are /// associated with an instance of an item, which allows them to have simple /// Value get/set properties instead of the more cumbersome GetValue/SetValue /// mechanism of PropertyDescriptor. /// /// A ModelProperty’s value may come from a locally set value, or it may be /// inherited from somewhere higher up in the property mechanism. Because /// all items in the tree contain Source properties, you can /// easily find out the real source of a property value simply using the /// following code: /// /// Console.WriteLine(property.Value.Source); /// /// Value will return null if the property is not set anywhere in the hierarchy. /// /// Type converters and editors defined on the underlying data model are /// wrapped so that they accept ModelItems as parameters. /// public abstract class ModelProperty { ////// Creates a new ModelProperty. /// protected ModelProperty() { } ////// Returns the attributes declared on this property. /// public abstract AttributeCollection Attributes { get; } ////// Returns Value cast as a ModelItemCollection. This property allows you to /// access collection properties easily without cluttering your code with casts: /// /// Property.Collection.Add(myItem); /// /// If the property value is not a collection, this property will return null. /// [Fx.Tag.KnownXamlExternalAttribute] public abstract ModelItemCollection Collection { get; } ////// Returns the currently computed value for this property. Setting a value /// on this property is the same as calling SetValue, but can be used in /// data binding expressions. /// public abstract object ComputedValue { get; set; } ////// Returns the type converter to use with this property. Underlying type /// converters are all wrapped so they accept Item objects. When performing /// a conversion to a particular value, the type converter’s return type is /// not wrapped. Type converters which return standard values also return /// values as Item objects. /// public abstract TypeConverter Converter { get; } ////// Returns the type which defines this property if IsAttached returns true. /// Otherwhise, returns null. /// public abstract Type AttachedOwnerType { get; } ////// Returns the default value for this property. If the property does not /// define a default value this will return null. /// public abstract object DefaultValue { get; } ////// Returns Value cast as a ItemDictionary. This property allows you to /// access dictionary properties easily without cluttering your code with casts: /// /// Property.Dictionary[key] = value; /// /// If the property value is not a dictionary, this property will return null. /// [Fx.Tag.KnownXamlExternalAttribute] public abstract ModelItemDictionary Dictionary { get; } ////// Returns true if the property can be shown in a property window. /// public abstract bool IsBrowsable { get; } ////// Returns true if the value contained in the property is a ItemCollection. /// public abstract bool IsCollection { get; } ////// Returns true if the value contained in the property is a ItemDictionary. /// public abstract bool IsDictionary { get; } ////// Returns true if the property is read only. /// public abstract bool IsReadOnly { get; } ////// Returns true if the property’s value is set locally. /// public abstract bool IsSet { get; } ////// Returns true if the property represents an attached property from a different type. /// public abstract bool IsAttached { get; } ////// Returns the value set into this property. A property may return a /// value that is inherited further up the element hierarchy, in which /// case this property will return a value whose source != this. /// If no value has ever been set for the property Value will return null. /// public abstract ModelItem Value { get; } ////// Returns the name of this property. /// public abstract string Name { get; } ////// Returns the parent of this property. All properties have /// parents, so this never returns null. /// public abstract ModelItem Parent { get; } ////// The data type of the property. /// public abstract Type PropertyType { get; } ////// Clears the local value for the property. /// public abstract void ClearValue(); ////// Sets a local value on a property. If this value is already /// a ModelItem, it will be used directly. If it isn’t, a ModelItem /// will be created. Setting null into a property is valid, but /// this is not the same as calling ClearValue(). /// /// /// The new value to set. /// ////// The input value, if the value is already a ModelItem, or a newly /// created ModelItem wrapping the value. /// public abstract ModelItem SetValue(object value); ////// Equality operator. /// // FXCop: args are validated; fxcop does not seem to understand ReferenceEquals. public static bool operator ==(ModelProperty first, ModelProperty second) { if (object.ReferenceEquals(first, second)) return true; if (object.ReferenceEquals(first, null) || object.ReferenceEquals(second, null)) return false; return (first.Parent == second.Parent && first.Name.Equals(second.Name)); } ////// Inequality operator. /// // FXCop: args are validated; fxcop does not seem to understand ReferenceEquals. public static bool operator !=(ModelProperty first, ModelProperty second) { if (object.ReferenceEquals(first, second)) return false; if (object.ReferenceEquals(first, null) || object.ReferenceEquals(second, null)) return true; return (first.Parent != second.Parent || !first.Name.Equals(second.Name)); } ////// Equality for properties. Properties are equal if /// they have the same name and parent. /// /// ///public override bool Equals(object obj) { if (object.ReferenceEquals(obj, this)) return true; ModelProperty prop = obj as ModelProperty; if (object.ReferenceEquals(prop, null)) return false; if (prop.Parent != Parent) return false; return prop.Name.Equals(Name); } /// /// Standard hashcode implementation. /// ///public override int GetHashCode() { return Parent.GetHashCode() ^ Name.GetHashCode(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Activities.Presentation.Model { using System.Activities.Presentation.Internal.Properties; using System; using System.ComponentModel; using System.Diagnostics.CodeAnalysis; using System.Globalization; using System.Runtime; ////// An ModelProperty represents a property on an item. ModelProperties are /// associated with an instance of an item, which allows them to have simple /// Value get/set properties instead of the more cumbersome GetValue/SetValue /// mechanism of PropertyDescriptor. /// /// A ModelProperty’s value may come from a locally set value, or it may be /// inherited from somewhere higher up in the property mechanism. Because /// all items in the tree contain Source properties, you can /// easily find out the real source of a property value simply using the /// following code: /// /// Console.WriteLine(property.Value.Source); /// /// Value will return null if the property is not set anywhere in the hierarchy. /// /// Type converters and editors defined on the underlying data model are /// wrapped so that they accept ModelItems as parameters. /// public abstract class ModelProperty { ////// Creates a new ModelProperty. /// protected ModelProperty() { } ////// Returns the attributes declared on this property. /// public abstract AttributeCollection Attributes { get; } ////// Returns Value cast as a ModelItemCollection. This property allows you to /// access collection properties easily without cluttering your code with casts: /// /// Property.Collection.Add(myItem); /// /// If the property value is not a collection, this property will return null. /// [Fx.Tag.KnownXamlExternalAttribute] public abstract ModelItemCollection Collection { get; } ////// Returns the currently computed value for this property. Setting a value /// on this property is the same as calling SetValue, but can be used in /// data binding expressions. /// public abstract object ComputedValue { get; set; } ////// Returns the type converter to use with this property. Underlying type /// converters are all wrapped so they accept Item objects. When performing /// a conversion to a particular value, the type converter’s return type is /// not wrapped. Type converters which return standard values also return /// values as Item objects. /// public abstract TypeConverter Converter { get; } ////// Returns the type which defines this property if IsAttached returns true. /// Otherwhise, returns null. /// public abstract Type AttachedOwnerType { get; } ////// Returns the default value for this property. If the property does not /// define a default value this will return null. /// public abstract object DefaultValue { get; } ////// Returns Value cast as a ItemDictionary. This property allows you to /// access dictionary properties easily without cluttering your code with casts: /// /// Property.Dictionary[key] = value; /// /// If the property value is not a dictionary, this property will return null. /// [Fx.Tag.KnownXamlExternalAttribute] public abstract ModelItemDictionary Dictionary { get; } ////// Returns true if the property can be shown in a property window. /// public abstract bool IsBrowsable { get; } ////// Returns true if the value contained in the property is a ItemCollection. /// public abstract bool IsCollection { get; } ////// Returns true if the value contained in the property is a ItemDictionary. /// public abstract bool IsDictionary { get; } ////// Returns true if the property is read only. /// public abstract bool IsReadOnly { get; } ////// Returns true if the property’s value is set locally. /// public abstract bool IsSet { get; } ////// Returns true if the property represents an attached property from a different type. /// public abstract bool IsAttached { get; } ////// Returns the value set into this property. A property may return a /// value that is inherited further up the element hierarchy, in which /// case this property will return a value whose source != this. /// If no value has ever been set for the property Value will return null. /// public abstract ModelItem Value { get; } ////// Returns the name of this property. /// public abstract string Name { get; } ////// Returns the parent of this property. All properties have /// parents, so this never returns null. /// public abstract ModelItem Parent { get; } ////// The data type of the property. /// public abstract Type PropertyType { get; } ////// Clears the local value for the property. /// public abstract void ClearValue(); ////// Sets a local value on a property. If this value is already /// a ModelItem, it will be used directly. If it isn’t, a ModelItem /// will be created. Setting null into a property is valid, but /// this is not the same as calling ClearValue(). /// /// /// The new value to set. /// ////// The input value, if the value is already a ModelItem, or a newly /// created ModelItem wrapping the value. /// public abstract ModelItem SetValue(object value); ////// Equality operator. /// // FXCop: args are validated; fxcop does not seem to understand ReferenceEquals. public static bool operator ==(ModelProperty first, ModelProperty second) { if (object.ReferenceEquals(first, second)) return true; if (object.ReferenceEquals(first, null) || object.ReferenceEquals(second, null)) return false; return (first.Parent == second.Parent && first.Name.Equals(second.Name)); } ////// Inequality operator. /// // FXCop: args are validated; fxcop does not seem to understand ReferenceEquals. public static bool operator !=(ModelProperty first, ModelProperty second) { if (object.ReferenceEquals(first, second)) return false; if (object.ReferenceEquals(first, null) || object.ReferenceEquals(second, null)) return true; return (first.Parent != second.Parent || !first.Name.Equals(second.Name)); } ////// Equality for properties. Properties are equal if /// they have the same name and parent. /// /// ///public override bool Equals(object obj) { if (object.ReferenceEquals(obj, this)) return true; ModelProperty prop = obj as ModelProperty; if (object.ReferenceEquals(prop, null)) return false; if (prop.Parent != Parent) return false; return prop.Name.Equals(Name); } /// /// Standard hashcode implementation. /// ///public override int GetHashCode() { return Parent.GetHashCode() ^ Name.GetHashCode(); } } } // 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
- ConstantExpression.cs
- SystemBrushes.cs
- TextSelection.cs
- PrivateFontCollection.cs
- MailAddress.cs
- ConfigUtil.cs
- DecimalStorage.cs
- TemplateBuilder.cs
- Drawing.cs
- versioninfo.cs
- ClusterSafeNativeMethods.cs
- SchemaImporter.cs
- ITextView.cs
- SimplePropertyEntry.cs
- NavigationEventArgs.cs
- _NetRes.cs
- InstanceDataCollectionCollection.cs
- DataGridViewAccessibleObject.cs
- GetWinFXPath.cs
- CaseStatement.cs
- FixedDocument.cs
- SoapMessage.cs
- UriTemplateClientFormatter.cs
- EmulateRecognizeCompletedEventArgs.cs
- TypeDescriptionProvider.cs
- BufferedReadStream.cs
- DrawingDrawingContext.cs
- SingleAnimationBase.cs
- CalendarButtonAutomationPeer.cs
- ProxyElement.cs
- DefaultEventAttribute.cs
- SessionParameter.cs
- WmlListAdapter.cs
- ScrollItemPatternIdentifiers.cs
- StaticResourceExtension.cs
- HyperlinkAutomationPeer.cs
- FuncCompletionCallbackWrapper.cs
- DataGridPageChangedEventArgs.cs
- ComplexTypeEmitter.cs
- documentsequencetextpointer.cs
- ProtocolElementCollection.cs
- TryLoadRunnableWorkflowCommand.cs
- ConstructorNeedsTagAttribute.cs
- HttpCachePolicy.cs
- InputLanguageEventArgs.cs
- SoapInteropTypes.cs
- AssemblyAttributesGoHere.cs
- cookieexception.cs
- COM2ExtendedUITypeEditor.cs
- DataException.cs
- FormatVersion.cs
- WebPartHeaderCloseVerb.cs
- ToolboxBitmapAttribute.cs
- HttpRequestWrapper.cs
- XmlSchemaException.cs
- base64Transforms.cs
- SuppressMergeCheckAttribute.cs
- SelectionWordBreaker.cs
- PeerPresenceInfo.cs
- PointLight.cs
- loginstatus.cs
- Timeline.cs
- Span.cs
- SqlInfoMessageEvent.cs
- SmtpAuthenticationManager.cs
- ContainerUtilities.cs
- ObfuscationAttribute.cs
- BoundField.cs
- TokenBasedSet.cs
- WindowsStartMenu.cs
- Environment.cs
- Span.cs
- DataRow.cs
- Function.cs
- XmlHierarchyData.cs
- RequestDescription.cs
- ResXBuildProvider.cs
- ValueConversionAttribute.cs
- EntityDataSourceSelectedEventArgs.cs
- RequestQueryProcessor.cs
- FrameworkElementAutomationPeer.cs
- AuthenticationModuleElement.cs
- TokenizerHelper.cs
- PropertyGeneratedEventArgs.cs
- _TimerThread.cs
- RIPEMD160.cs
- KeyPressEvent.cs
- Int32CAMarshaler.cs
- DataGridViewCheckBoxCell.cs
- SystemWebCachingSectionGroup.cs
- StringSorter.cs
- EntityDataSourceEntityTypeFilterConverter.cs
- CodeCatchClause.cs
- ProjectionPruner.cs
- EventMappingSettingsCollection.cs
- RIPEMD160Managed.cs
- IISMapPath.cs
- SqlGenerator.cs
- DataTableClearEvent.cs
- ImmutablePropertyDescriptorGridEntry.cs