Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Base / System / Windows / Threading / DispatcherHooks.cs / 1 / 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
- TreeWalker.cs
- XmlSequenceWriter.cs
- SignedInfo.cs
- ButtonFieldBase.cs
- ProgressBarHighlightConverter.cs
- ToolStripDropDownButton.cs
- ConstrainedGroup.cs
- DesignerVerb.cs
- ADMembershipUser.cs
- SqlTriggerContext.cs
- TableItemProviderWrapper.cs
- ReflectEventDescriptor.cs
- JournalEntry.cs
- Overlapped.cs
- ListBoxItemAutomationPeer.cs
- FixedTextContainer.cs
- Frame.cs
- RequestCacheEntry.cs
- TreeNode.cs
- DataGridViewTopRowAccessibleObject.cs
- BuildProviderAppliesToAttribute.cs
- FormParameter.cs
- CharStorage.cs
- DataGridRow.cs
- Point3DKeyFrameCollection.cs
- SqlCommandSet.cs
- DataGridViewAccessibleObject.cs
- BooleanConverter.cs
- SoapObjectInfo.cs
- Speller.cs
- WindowsFormsSectionHandler.cs
- Helpers.cs
- DataColumnMappingCollection.cs
- SR.cs
- DataControlReferenceCollection.cs
- QilReference.cs
- Transform3DCollection.cs
- SmiEventSink_DeferedProcessing.cs
- WebZone.cs
- NameSpaceExtractor.cs
- ZipIOBlockManager.cs
- CompositeDesignerAccessibleObject.cs
- ObjectViewFactory.cs
- AttributeQuery.cs
- AvTraceFormat.cs
- SerializationObjectManager.cs
- Calendar.cs
- WebPart.cs
- HierarchicalDataSourceConverter.cs
- RequestNavigateEventArgs.cs
- ManagedIStream.cs
- SubtreeProcessor.cs
- SafeRsaProviderHandle.cs
- WriteFileContext.cs
- EndpointNotFoundException.cs
- SqlProvider.cs
- DataGridParentRows.cs
- SqlConnectionPoolProviderInfo.cs
- TdsRecordBufferSetter.cs
- ConfigurationManagerInternalFactory.cs
- XmlSchema.cs
- TabletDeviceInfo.cs
- EventListenerClientSide.cs
- OleDbCommandBuilder.cs
- SimpleBitVector32.cs
- BuildProvider.cs
- CommandValueSerializer.cs
- HeaderCollection.cs
- StringUtil.cs
- AssemblyName.cs
- DatePickerDateValidationErrorEventArgs.cs
- FileRecordSequenceCompletedAsyncResult.cs
- MyContact.cs
- DrawItemEvent.cs
- XmlDataLoader.cs
- BinaryReader.cs
- String.cs
- XXXInfos.cs
- StringPropertyBuilder.cs
- StylusPointDescription.cs
- ThrowHelper.cs
- XmlHelper.cs
- UDPClient.cs
- TemplatePagerField.cs
- securitycriticaldata.cs
- DateTimeConverter2.cs
- AdRotator.cs
- BidOverLoads.cs
- PixelFormats.cs
- ConnectorEditor.cs
- FrameworkPropertyMetadata.cs
- Point3DCollection.cs
- GradientBrush.cs
- ServiceParser.cs
- ConnectionManagementElement.cs
- ProviderConnectionPointCollection.cs
- figurelength.cs
- FunctionDescription.cs
- SaveFileDialog.cs
- SrgsOneOf.cs