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0756ef15b9
* Multicast delegate Add* calls now return FDelegateHandles, and Remove* calls are now all deprecated, except for a new Remove function which takes a FDelegateHandle. * New FConsoleManager::RegisterConsoleVariableSink_Handle and UnregisterConsoleVariableSink_Handle functions which work in terms of FConsoleVariableSinkHandle. * Timer calls which don't take FTimerHandles are deprecated. * FTicker::AddTicker now returns an FDelegateHandle and is removed by an overloaded Remove function. * DEFINE_ONLINE_DELEGATE* macros now define _Handle variants of the Add/Remove functions which return/take handles. * Various other handle-based registration changes. * Some unity build fixes. * Some simplification of delegate code. * Fixes for lots of existing code to use handle-based registration and unregistration. #codereview robert.manuszewski [CL 2400883 by Steve Robb in Main branch]
55 lines
2.2 KiB
C++
55 lines
2.2 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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#pragma once
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class FDirectoryWatchRequestWindows
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{
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public:
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FDirectoryWatchRequestWindows();
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virtual ~FDirectoryWatchRequestWindows();
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/** Sets up the directory handle and request information */
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bool Init(const FString& InDirectory);
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/** Adds a delegate to get fired when the directory changes */
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FDelegateHandle AddDelegate( const IDirectoryWatcher::FDirectoryChanged& InDelegate );
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/** Removes a delegate to get fired when the directory changes */
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DELEGATE_DEPRECATED("This overload of RemoveDelegate is deprecated, instead pass the result of AddDelegate.")
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bool RemoveDelegate( const IDirectoryWatcher::FDirectoryChanged& InDelegate );
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/** Same as above, but for use within other deprecated calls to prevent multiple deprecation warnings */
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bool DEPRECATED_RemoveDelegate( const IDirectoryWatcher::FDirectoryChanged& InDelegate );
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/** Removes a delegate to get fired when the directory changes */
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bool RemoveDelegate( FDelegateHandle InHandle );
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/** Returns true if this request has any delegates listening to directory changes */
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bool HasDelegates() const;
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/** Returns the file handle for the directory that is being watched */
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HANDLE GetDirectoryHandle() const;
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/** Closes the system resources and prepares the request for deletion */
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void EndWatchRequest();
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/** True if system resources have been closed and the request is ready for deletion */
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bool IsPendingDelete() const { return bPendingDelete; }
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/** Triggers all pending file change notifications */
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void ProcessPendingNotifications();
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private:
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/** Non-static handler for an OS notification of a directory change */
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void ProcessChange(uint32 Error, uint32 NumBytes);
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/** Static Handler for an OS notification of a directory change */
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static void CALLBACK ChangeNotification(::DWORD Error, ::DWORD NumBytes, LPOVERLAPPED InOverlapped);
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FString Directory;
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HANDLE DirectoryHandle;
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int32 MaxChanges;
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bool bWatchSubtree;
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uint32 NotifyFilter;
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uint32 BufferLength;
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uint8* Buffer;
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uint8* BackBuffer;
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OVERLAPPED Overlapped;
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bool bPendingDelete;
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bool bEndWatchRequestInvoked;
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TArray<IDirectoryWatcher::FDirectoryChanged> Delegates;
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TArray<FFileChangeData> FileChanges;
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}; |