Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Base / System / Windows / Threading / DispatcherHooks.cs / 1305600 / DispatcherHooks.cs
using System.Security; using System.Security.Permissions; namespace System.Windows.Threading { ////// Additional information provided about a dispatcher. /// public sealed class DispatcherHooks { ////// An event indicating the the dispatcher has no more operations to process. /// ////// Note that this event will be raised by the dispatcher thread when /// there is no more pending work to do. /// /// Note also that this event could come before the last operation is /// invoked, because that is when we determine that the queue is empty. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _dispatcherInactive /// TreatAsSafe: link-demands /// public event EventHandler DispatcherInactive { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _dispatcherInactive += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _dispatcherInactive -= value; } } } ////// An event indicating that an operation was posted to the dispatcher. /// ////// Typically this is due to the BeginInvoke API, but the Invoke API can /// also cause this if any priority other than DispatcherPriority.Send is /// specified, or if the destination dispatcher is owned by a different /// thread. /// /// Note that any thread can post operations, so this event can be /// raised by any thread. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationPosted /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationPosted { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationPosted += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationPosted -= value; } } } ////// An event indicating that an operation was completed. /// ////// Note that this event will be raised by the dispatcher thread after /// the operation has completed. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationCompleted /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationCompleted { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationCompleted += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationCompleted -= value; } } } ////// An event indicating that the priority of an operation was changed. /// ////// Note that any thread can change the priority of operations, /// so this event can be raised by any thread. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationPriorityChanged /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationPriorityChanged { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationPriorityChanged += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationPriorityChanged -= value; } } } ////// An event indicating that an operation was aborted. /// ////// Note that any thread can abort an operation, so this event /// can be raised by any thread. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationAborted /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationAborted { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationAborted += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationAborted -= value; } } } // Only we can create these things. internal DispatcherHooks() { } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseDispatcherInactive(Dispatcher dispatcher) { EventHandler dispatcherInactive = _dispatcherInactive; if(dispatcherInactive != null) { dispatcherInactive(dispatcher, EventArgs.Empty); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationPosted(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationPosted = _operationPosted; if(operationPosted != null) { operationPosted(dispatcher, new DispatcherHookEventArgs(operation)); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationCompleted(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationCompleted = _operationCompleted; if(operationCompleted != null) { operationCompleted(dispatcher, new DispatcherHookEventArgs(operation)); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationPriorityChanged(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationPriorityChanged = _operationPriorityChanged; if(operationPriorityChanged != null) { operationPriorityChanged(dispatcher, new DispatcherHookEventArgs(operation)); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationAborted(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationAborted = _operationAborted; if(operationAborted != null) { operationAborted(dispatcher, new DispatcherHookEventArgs(operation)); } } private object _instanceLock = new object(); ////// Do not expose to partially trusted code. /// [SecurityCritical] private EventHandler _dispatcherInactive; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationPosted; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationCompleted; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationPriorityChanged; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationAborted; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. using System.Security; using System.Security.Permissions; namespace System.Windows.Threading { ////// Additional information provided about a dispatcher. /// public sealed class DispatcherHooks { ////// An event indicating the the dispatcher has no more operations to process. /// ////// Note that this event will be raised by the dispatcher thread when /// there is no more pending work to do. /// /// Note also that this event could come before the last operation is /// invoked, because that is when we determine that the queue is empty. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _dispatcherInactive /// TreatAsSafe: link-demands /// public event EventHandler DispatcherInactive { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _dispatcherInactive += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _dispatcherInactive -= value; } } } ////// An event indicating that an operation was posted to the dispatcher. /// ////// Typically this is due to the BeginInvoke API, but the Invoke API can /// also cause this if any priority other than DispatcherPriority.Send is /// specified, or if the destination dispatcher is owned by a different /// thread. /// /// Note that any thread can post operations, so this event can be /// raised by any thread. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationPosted /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationPosted { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationPosted += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationPosted -= value; } } } ////// An event indicating that an operation was completed. /// ////// Note that this event will be raised by the dispatcher thread after /// the operation has completed. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationCompleted /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationCompleted { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationCompleted += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationCompleted -= value; } } } ////// An event indicating that the priority of an operation was changed. /// ////// Note that any thread can change the priority of operations, /// so this event can be raised by any thread. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationPriorityChanged /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationPriorityChanged { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationPriorityChanged += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationPriorityChanged -= value; } } } ////// An event indicating that an operation was aborted. /// ////// Note that any thread can abort an operation, so this event /// can be raised by any thread. /// Callers must have UIPermission(PermissionState.Unrestricted) to call this API. /// ////// Critical: accesses _operationAborted /// TreatAsSafe: link-demands /// public event DispatcherHookEventHandler OperationAborted { [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] add { lock(_instanceLock) { _operationAborted += value; } } [SecurityCritical] [UIPermissionAttribute(SecurityAction.LinkDemand,Unrestricted=true)] remove { lock(_instanceLock) { _operationAborted -= value; } } } // Only we can create these things. internal DispatcherHooks() { } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseDispatcherInactive(Dispatcher dispatcher) { EventHandler dispatcherInactive = _dispatcherInactive; if(dispatcherInactive != null) { dispatcherInactive(dispatcher, EventArgs.Empty); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationPosted(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationPosted = _operationPosted; if(operationPosted != null) { operationPosted(dispatcher, new DispatcherHookEventArgs(operation)); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationCompleted(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationCompleted = _operationCompleted; if(operationCompleted != null) { operationCompleted(dispatcher, new DispatcherHookEventArgs(operation)); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationPriorityChanged(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationPriorityChanged = _operationPriorityChanged; if(operationPriorityChanged != null) { operationPriorityChanged(dispatcher, new DispatcherHookEventArgs(operation)); } } ////// Critical: accesses _operationAborted /// TreatAsSafe: no exposure /// [SecurityCritical, SecurityTreatAsSafe] internal void RaiseOperationAborted(Dispatcher dispatcher, DispatcherOperation operation) { DispatcherHookEventHandler operationAborted = _operationAborted; if(operationAborted != null) { operationAborted(dispatcher, new DispatcherHookEventArgs(operation)); } } private object _instanceLock = new object(); ////// Do not expose to partially trusted code. /// [SecurityCritical] private EventHandler _dispatcherInactive; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationPosted; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationCompleted; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationPriorityChanged; ////// Do not expose to partially trusted code. /// [SecurityCritical] private DispatcherHookEventHandler _operationAborted; } } // 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
- XmlSchemaElement.cs
- XsdSchemaFileEditor.cs
- DrawTreeNodeEventArgs.cs
- SvcMapFile.cs
- EllipticalNodeOperations.cs
- SqlDataAdapter.cs
- SessionStateContainer.cs
- DataGridViewDataConnection.cs
- Win32.cs
- Queue.cs
- CalendarTable.cs
- AppDomain.cs
- PropertyDescriptorCollection.cs
- RawStylusInput.cs
- MouseDevice.cs
- GeneralTransform3DTo2DTo3D.cs
- XmlBindingWorker.cs
- WindowsPen.cs
- Timeline.cs
- BamlLocalizer.cs
- DefaultEventAttribute.cs
- LayoutEditorPart.cs
- TransformGroup.cs
- FieldMetadata.cs
- Logging.cs
- SQLDoubleStorage.cs
- RegexRunner.cs
- SimpleHandlerFactory.cs
- RightsDocument.cs
- ChunkedMemoryStream.cs
- CompilationSection.cs
- DiffuseMaterial.cs
- RefType.cs
- HTMLTagNameToTypeMapper.cs
- ConfigurationValues.cs
- LogEntryDeserializer.cs
- XmlByteStreamWriter.cs
- ProcessDesigner.cs
- PathTooLongException.cs
- ErrorWebPart.cs
- DecimalConverter.cs
- View.cs
- Vector3DAnimationBase.cs
- RegexStringValidator.cs
- ToolBar.cs
- Number.cs
- EntitySetBaseCollection.cs
- ApplicationProxyInternal.cs
- AnnotationStore.cs
- TransactedBatchingBehavior.cs
- ToolStripItem.cs
- RegexGroupCollection.cs
- RootContext.cs
- TagPrefixCollection.cs
- RootNamespaceAttribute.cs
- NumberFunctions.cs
- CacheForPrimitiveTypes.cs
- DataListCommandEventArgs.cs
- ContextItem.cs
- LoadWorkflowAsyncResult.cs
- ApplyTemplatesAction.cs
- EventMap.cs
- Registry.cs
- UnionCodeGroup.cs
- SqlCrossApplyToCrossJoin.cs
- Size3D.cs
- UDPClient.cs
- DataServiceQueryProvider.cs
- ImmutableObjectAttribute.cs
- XPathScanner.cs
- Buffer.cs
- DataObjectFieldAttribute.cs
- MsmqIntegrationChannelFactory.cs
- ExtensibleClassFactory.cs
- FontInfo.cs
- AnnotationResourceChangedEventArgs.cs
- ViewStateException.cs
- HtmlInputHidden.cs
- clipboard.cs
- BreakRecordTable.cs
- ConfigurationElement.cs
- autovalidator.cs
- XamlVector3DCollectionSerializer.cs
- Transform3DGroup.cs
- BrowserDefinitionCollection.cs
- BuildDependencySet.cs
- PrintingPermissionAttribute.cs
- AppliedDeviceFiltersEditor.cs
- CommandField.cs
- Label.cs
- Item.cs
- InvalidComObjectException.cs
- RequiredAttributeAttribute.cs
- Imaging.cs
- FontFamilyConverter.cs
- DataGridViewTextBoxCell.cs
- IntellisenseTextBox.designer.cs
- TextEmbeddedObject.cs
- ListViewGroupItemCollection.cs
- DbConnectionStringBuilder.cs