Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / System / ComponentModel / NestedContainer.cs / 1 / NestedContainer.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.ComponentModel { using System; using System.ComponentModel; using System.Globalization; using System.IO; using System.Security.Permissions; ////// A nested container is a container that is owned by another component. Nested /// containers can be found by querying a component site's services for NestedConainter. /// Nested containers are a useful tool to establish owner relationships among components. /// All components within a nested container are named with the owning component's name /// as a prefix. /// [HostProtection(SharedState = true)] public class NestedContainer : Container, INestedContainer { private IComponent _owner; ////// Creates a new NestedContainer. /// public NestedContainer(IComponent owner) { if (owner == null) { throw new ArgumentNullException("owner"); } _owner = owner; _owner.Disposed += new EventHandler(OnOwnerDisposed); } ////// The component that owns this nested container. /// public IComponent Owner { get { return _owner; } } ////// Retrieves the name of the owning component. This may be overridden to /// provide a custom owner name. The default searches the owner's site for /// INestedSite and calls FullName, or ISite.Name if there is no nested site. /// If neither is available, this returns null. /// protected virtual string OwnerName { get { string ownerName = null; if (_owner != null && _owner.Site != null) { INestedSite nestedOwnerSite = _owner.Site as INestedSite; if (nestedOwnerSite != null) { ownerName = nestedOwnerSite.FullName; } else { ownerName = _owner.Site.Name; } } return ownerName; } } ////// Creates a site for the component within the container. /// protected override ISite CreateSite(IComponent component, string name) { if (component == null) { throw new ArgumentNullException("component"); } return new Site(component, this, name); } ////// Override of Container's dispose. /// protected override void Dispose(bool disposing) { if (disposing) { _owner.Disposed -= new EventHandler(OnOwnerDisposed); } base.Dispose(disposing); } ////// protected override object GetService(Type service) { if (service == typeof(INestedContainer)) { return this; } else { return base.GetService(service); } } ///[To be supplied.] ////// Called when our owning component is destroyed. /// private void OnOwnerDisposed(object sender, EventArgs e) { Dispose(); } ////// Simple site implementation. We do some special processing to name the site, but /// that's about it. /// private class Site : INestedSite { private IComponent component; private NestedContainer container; private string name; internal Site(IComponent component, NestedContainer container, string name) { this.component = component; this.container = container; this.name = name; } // The component sited by this component site. public IComponent Component { get { return component; } } // The container in which the component is sited. public IContainer Container { get { return container; } } public Object GetService(Type service) { return((service == typeof(ISite)) ? this : container.GetService(service)); } // Indicates whether the component is in design mode. public bool DesignMode { get { IComponent owner = container.Owner; if (owner != null && owner.Site != null) { return owner.Site.DesignMode; } return false; } } public string FullName { get { if (name != null) { string ownerName = container.OwnerName; string childName = name; if (ownerName != null) { childName = string.Format(CultureInfo.InvariantCulture, "{0}.{1}", ownerName, childName); } return childName; } return name; } } // The name of the component. // public String Name { get { return name; } set { if (value == null || name == null || !value.Equals(name)) { container.ValidateName(component, value); name = value; } } } } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- CachedPathData.cs
- DESCryptoServiceProvider.cs
- TextRangeBase.cs
- Vector3dCollection.cs
- XmlTypeAttribute.cs
- DataGridLinkButton.cs
- path.cs
- MD5Cng.cs
- ProfileGroupSettings.cs
- XmlAttributeOverrides.cs
- ParameterBuilder.cs
- BitmapSource.cs
- _NegoState.cs
- XmlConvert.cs
- ByteAnimation.cs
- ServiceOperation.cs
- Triangle.cs
- RawStylusInputCustomData.cs
- StylusEventArgs.cs
- StringPropertyBuilder.cs
- MemberAccessException.cs
- UserMapPath.cs
- DropDownButton.cs
- StrokeCollectionConverter.cs
- TextFormatterContext.cs
- StringBuilder.cs
- NamespaceCollection.cs
- CacheDependency.cs
- RoleService.cs
- VisualTarget.cs
- CredentialCache.cs
- DataServiceHost.cs
- IPCCacheManager.cs
- SqlGatherProducedAliases.cs
- DataReceivedEventArgs.cs
- SelectionEditingBehavior.cs
- EntityClassGenerator.cs
- SchemaObjectWriter.cs
- CompoundFileStorageReference.cs
- SafeThreadHandle.cs
- SizeConverter.cs
- ActivityTrace.cs
- VirtualizedItemProviderWrapper.cs
- ConcurrentDictionary.cs
- ListManagerBindingsCollection.cs
- X500Name.cs
- WebPartDeleteVerb.cs
- PreservationFileWriter.cs
- SqlTrackingService.cs
- MessageQueueKey.cs
- FileVersionInfo.cs
- PrivilegeNotHeldException.cs
- Point3DCollectionValueSerializer.cs
- NamespaceInfo.cs
- EasingKeyFrames.cs
- SpotLight.cs
- DummyDataSource.cs
- NativeWindow.cs
- DataGridViewUtilities.cs
- InvalidCommandTreeException.cs
- EdmMember.cs
- StylusPointProperty.cs
- SoapTypeAttribute.cs
- PositiveTimeSpanValidatorAttribute.cs
- Freezable.cs
- SafeRightsManagementQueryHandle.cs
- URLMembershipCondition.cs
- ObjectItemAssemblyLoader.cs
- OpenCollectionAsyncResult.cs
- securitycriticaldataClass.cs
- EncryptedKeyIdentifierClause.cs
- PrimitiveSchema.cs
- ICspAsymmetricAlgorithm.cs
- InvokeProviderWrapper.cs
- SystemTcpConnection.cs
- DataGridViewLayoutData.cs
- PropertyEmitter.cs
- AlternationConverter.cs
- HtmlTableRowCollection.cs
- InvalidComObjectException.cs
- HierarchicalDataTemplate.cs
- FontStretch.cs
- TextParagraphProperties.cs
- DesignerAutoFormat.cs
- Transform.cs
- KeyGestureConverter.cs
- BindingExpression.cs
- Matrix.cs
- PackageRelationshipCollection.cs
- SqlLiftWhereClauses.cs
- ErrorInfoXmlDocument.cs
- PageContentCollection.cs
- TextEditorCharacters.cs
- HelpInfo.cs
- TypedReference.cs
- SamlConditions.cs
- XmlTypeMapping.cs
- XMLSchema.cs
- WebPartDisplayMode.cs
- NullableLongSumAggregationOperator.cs