Mk2Rev1

various bugfixes and such.
also bookmarks, temp song loaderm and undo overhaul with near complete multiplayer, but menu items disabled. i really wish i could split this into multiple commits, but i don't know how to work unreal.

Plugins/ZipUtility-ue4/Source/WindowsUtility/Public/WFUFileListInterface.h

@@ -0,0 +1,43 @@
+// Fill out your copyright notice in the Description page of Project Settings.
+
+#pragma once
+
+#include "WFUFileListInterface.generated.h"
+
+UINTERFACE(MinimalAPI)
+class UWFUFileListInterface : public UInterface
+{
+	GENERATED_UINTERFACE_BODY()
+};
+
+class WINDOWSFILEUTILITY_API IWFUFileListInterface
+{
+	GENERATED_IINTERFACE_BODY()
+
+public:
+
+	/**
+	* Called when a file has been found inside the folder of choice
+	* @param FileName of the found file.
+	* @param Size in bytes of the found file.
+	* @param FilePath of the file that was found
+	*/
+	UFUNCTION(BlueprintNativeEvent, Category = FolderWatchEvent)
+	void OnListFileFound(const FString& FileName, int32 ByteCount, const FString& FilePath);
+
+	/**
+	* Called when a directory has been found inside the folder of choice
+	* @param DirectoryName of the found directory.
+	* @param FilePath of the file that was found
+	*/
+	UFUNCTION(BlueprintNativeEvent, Category = FolderWatchEvent)
+	void OnListDirectoryFound(const FString& DirectoryName, const FString& FilePath);
+
+	/**
+	* Called when the listing operation has completed.
+	* @param DirectoryPath Path of the directory
+	* @param Files array of files found
+	*/
+	UFUNCTION(BlueprintNativeEvent, Category = FolderWatchEvent)
+	void OnListDone(const FString& DirectoryPath, const TArray<FString>& Files, const TArray<FString>& Folders);
+};