FText FTextureLODGroupLayout::GetMipGenSettingsComboBoxContent() const
{
	UEnum* TextureGroupEnum = FindObject<UEnum>(NULL, TEXT("/Script/Engine.TextureMipGenSettings"));
	const FString MipGenSettingsName = TextureGroupEnum->GetMetaData(TEXT("DisplayName"), LodGroup->MipGenSettings);
	
	return FText::FromString(MipGenSettingsName);
}
TSharedRef<SWidget> FTextureLODGroupLayout::MakeMipGenSettingsComboWidget(TSharedPtr<TextureMipGenSettings> InItem)
{
	UEnum* TextureGroupEnum = FindObject<UEnum>(NULL, TEXT("/Script/Engine.TextureMipGenSettings"));
	const FString MipGenSettingsName = TextureGroupEnum->GetMetaData(TEXT("DisplayName"), *InItem.Get());

	return SNew(STextBlock).Text(FText::FromString(MipGenSettingsName)).Font(IDetailLayoutBuilder::GetDetailFont());
}
FString FAndroidTargetSettingsCustomization::DepthBufferPreferenceToString(const EAndroidDepthBufferPreference::Type DepthBufferPreference)
{
	extern ANDROIDRUNTIMESETTINGS_API class UEnum* Z_Construct_UEnum_UAndroidRuntimeSettings_EAndroidDepthBufferPreference();

	UEnum* Enum = Z_Construct_UEnum_UAndroidRuntimeSettings_EAndroidDepthBufferPreference();
	check(Enum != nullptr);

	return Enum->GetMetaData(TEXT("ManifestValue"), (int32)DepthBufferPreference);
}
FString FAndroidTargetSettingsCustomization::OrientationToString(const EAndroidScreenOrientation::Type Orientation)
{
	extern ANDROIDRUNTIMESETTINGS_API class UEnum* Z_Construct_UEnum_UAndroidRuntimeSettings_EAndroidScreenOrientation();
	
	UEnum* Enum = Z_Construct_UEnum_UAndroidRuntimeSettings_EAndroidScreenOrientation();
	check(Enum != nullptr);
	
	return Enum->GetMetaData(TEXT("ManifestValue"), (int32)Orientation);
}
void UGatherTextFromMetaDataCommandlet::GatherTextFromUObject(UField* const Field)
{
	const int32 MetaDataCount = 3;
	const FString MetaDataKeys[MetaDataCount] =
	{	TEXT("ToolTip"),			TEXT("DisplayName"),			TEXT("Category")			};
	const FString AssociatedNamespaces[MetaDataCount] =
	{	TEXT("UObjectToolTips"),	TEXT("UObjectDisplayNames"),	TEXT("UObjectCategories")	};

	// Gather for object.
	{
		for(int32 i = 0; i < MetaDataCount; ++i)
		{
			const FString& MetaDataValue = Field->GetMetaData(*MetaDataKeys[i]);
			if(!(MetaDataValue.IsEmpty()))
			{
				const FString Namespace = AssociatedNamespaces[i];
				FLocItem LocItem(MetaDataValue);
				FContext Context;
				Context.Key =	MetaDataKeys[i] == TEXT("Category")
							?	MetaDataValue
							:	Field->GetFullGroupName(true) + TEXT(".") + Field->GetName();
				Context.SourceLocation = TEXT("Run-time MetaData");
				ManifestInfo->AddEntry(TEXT("EntryDescription"), Namespace, LocItem, Context);
			}
		}
	}

	// For enums, also gather for enum values.
	{
		UEnum* Enum = Cast<UEnum>(Field);
		if(Enum)
		{
			const int32 ValueCount = Enum->NumEnums();
			for(int32 i = 0; i < ValueCount; ++i)
			{
				for(int32 j = 0; j < MetaDataCount; ++j)
				{
					const FString& MetaDataValue = Enum->GetMetaData(*MetaDataKeys[j], i);
					if(!(MetaDataValue.IsEmpty()))
					{
						const FString Namespace = AssociatedNamespaces[j];
						FLocItem LocItem(MetaDataValue);
						FContext Context;
						Context.Key =	MetaDataKeys[j] == TEXT("Category")
									?	MetaDataValue
									:	Enum->GetFullGroupName(true) + TEXT(".") + Enum->GetName() + TEXT(".") + Enum->GetEnumName(i);
						Context.SourceLocation = TEXT("Run-time MetaData");
						ManifestInfo->AddEntry(TEXT("EntryDescription"), Namespace, LocItem, Context);
					}
				}
			}
		}
	}
}
void FTextureLODGroupLayout::GenerateHeaderRowContent(FDetailWidgetRow& NodeRow)
{
	UEnum* TextureGroupEnum = FindObject<UEnum>(NULL, TEXT("/Script/Engine.TextureGroup"));
	const FString LODGroupName = TextureGroupEnum->GetMetaData(TEXT("DisplayName"), LodGroup->Group);

	NodeRow.NameContent()
		[
			SNew(STextBlock)
			.Text(FText::FromString(LODGroupName))
			.Font(IDetailLayoutBuilder::GetDetailFont())
		];
}
void SPropertyEditorCombo::SendToObjects( const FString& NewValue )
{
	const TSharedRef< FPropertyNode > PropertyNode = PropertyEditor->GetPropertyNode();
	UProperty* Property = PropertyNode->GetProperty();

	FString Value;
	FString ToolTipValue;
	if ( bUsesAlternateDisplayValues && !Property->IsA(UStrProperty::StaticClass()))
	{
		// currently only enum properties can use alternate display values; this might change, so assert here so that if support is expanded to other property types
		// without updating this block of code, we'll catch it quickly
		UEnum* Enum = CastChecked<UByteProperty>(Property)->Enum;
		check(Enum);
		int32 Index = INDEX_NONE;
		for( int32 ItemIndex = 0; ItemIndex <  Enum->NumEnums(); ++ItemIndex )
		{
			const FString EnumName = Enum->GetEnumName(ItemIndex);
			const FString DisplayName = Enum->GetDisplayNameText(ItemIndex ).ToString();
			if( DisplayName.Len() > 0 )
			{
				if ( DisplayName == NewValue )
				{
					Index = ItemIndex;
					break;
				}
			}
			else if (EnumName == NewValue)
			{
				Index = ItemIndex;
				break;
			}
		}

		check( Index != INDEX_NONE );

		Value = Enum->GetEnumName(Index);

		ToolTipValue = Enum->GetMetaData( TEXT("ToolTip"), Index );
		FString ToolTipText = Property->GetToolTipText().ToString();
		if (ToolTipValue.Len() > 0)
		{
			ToolTipText = FString::Printf(TEXT("%s\n\n%s"), *ToolTipText, *ToolTipValue);
		}
		SetToolTipText(ToolTipText);
	}
	else
	{
		Value = NewValue;
	}

	const TSharedRef< IPropertyHandle > PropertyHandle = PropertyEditor->GetPropertyHandle();
	PropertyHandle->SetValueFromFormattedString( Value );
}
void UCollisionProfile::LoadProfileConfig(bool bForceInit)
{
	/** 
	 * This function loads all config data to memory
	 * 
	 * 1. First it fixes the meta data for each custom channel name since those meta data is used for #2
	 * 2. Load Default Profile so that it can be used later
	 * 3. Second it sets up Correct ResponseToChannel for all profiles
	 * 4. It loads profile redirect data 
	 **/
	// read "EngineTraceChanne" and "GameTraceChanne" and set meta data
	FConfigSection* Configs = GConfig->GetSectionPrivate( TEXT("/Script/Engine.CollisionProfile"), false, true, GEngineIni );

	// before any op, verify if profiles contains invalid name - such as Custom profile name - remove all of them
	for (auto Iter=Profiles.CreateConstIterator(); Iter; ++Iter)
	{
		// make sure it doens't have any 
		if (Iter->Name == CustomCollisionProfileName)
		{
			UE_LOG(LogCollisionProfile, Error, TEXT("Profiles contain invalid name : %s is reserved for internal use"), *CustomCollisionProfileName.ToString());
			Profiles.RemoveAt(Iter.GetIndex());
		}
	}
	// 1. First loads all meta data for custom channels
	// this can be used in #2, so had to fix up first

	// this is to replace ECollisionChannel's DisplayName to be defined by users
	FString EngineTraceChannel	= TEXT("EngineTraceChannel");
	FString GameTraceChannel	= TEXT("GameTraceChannel");

	// find the enum
	UEnum* Enum = FindObject<UEnum>(ANY_PACKAGE, TEXT("ECollisionChannel"), true);
	// we need this Enum
	check (Enum);
	UStruct* Struct = FCollisionResponseContainer::StaticStruct(); 
	check (Struct);
	const FString KeyName = TEXT("DisplayName");
	const FString TraceType = TEXT("TraceQuery");
	const FString TraceValue = TEXT("1");
	const FString HiddenMeta = TEXT("Hidden");

	// need to initialize displaynames separate
	int32 NumEnum = Enum->NumEnums();
	ChannelDisplayNames.Empty(NumEnum);
	ChannelDisplayNames.AddZeroed(NumEnum);
	TraceTypeMapping.Empty();
	ObjectTypeMapping.Empty();

	// first go through enum entry, and add suffix to displaynames
	int32 PrefixLen = FString(TEXT("ECC_")).Len();

	// need to have mapping table between ECollisionChannel and EObjectTypeQuery/ETraceTypeQuery
	UEnum* ObjectTypeEnum = FindObject<UEnum>(ANY_PACKAGE, TEXT("EObjectTypeQuery"), true);
	UEnum* TraceTypeEnum = FindObject<UEnum>(ANY_PACKAGE, TEXT("ETraceTypeQuery"), true);
	check (ObjectTypeEnum && TraceTypeEnum);

	for ( int32 EnumIndex=0; EnumIndex<NumEnum; ++EnumIndex )
	{
		FString EnumName = Enum->GetEnumName(EnumIndex);
		EnumName = EnumName.RightChop(PrefixLen);
		FName DisplayName = FName(*EnumName);

		if ( IS_VALID_COLLISIONCHANNEL(EnumIndex) )
		{
			// verify if the Struct name matches
			// this is to avoid situations where they mismatch and causes random bugs
			UField* Field = FindField<UField>(Struct, DisplayName);

			if (!Field)
			{
				// error - this is bad. This means somebody changed variable name without changing channel enum
				UE_LOG(LogCollisionProfile, Error, TEXT("Variable (%s) isn't found for Channel (%s). \nPlease make sure you name matches between ECollisionChannel and FCollisionResponseContainer."), *DisplayName.ToString(), *EnumName);
			}

#if WITH_EDITOR
			// clear displayname since we're setting it in below
			Enum->RemoveMetaData(*KeyName, EnumIndex);
			if (Enum->HasMetaData(*HiddenMeta, EnumIndex) == false)
			{
				Enum->SetMetaData(*HiddenMeta, NULL, EnumIndex);
			}
#endif			
		}
		else
		{
			// fix up FCollisionQueryFlag AllObjects flag, if trace type=1
			ECollisionChannel CollisionChannel = (ECollisionChannel)EnumIndex;
			// for any engine level collision profile, we hard coded here
			// meta data doesn't work in cooked build, so we'll have to manually handle them
			if ((CollisionChannel == ECC_Visibility) || (CollisionChannel == ECC_Camera))
			{
				// remove from object query flags
				FCollisionQueryFlag::Get().RemoveFromAllObjectsQueryFlag(CollisionChannel);
				TraceTypeMapping.Add(CollisionChannel);
			}
			else if ( CollisionChannel < ECC_OverlapAll_Deprecated )
			{
				ObjectTypeMapping.Add(CollisionChannel);
			}
		}

		ChannelDisplayNames[EnumIndex] = DisplayName;
	}

	// Now Load Channel setups, and set display names if customized
	// also initialize DefaultResposneContainer with default response for each channel
	FCollisionResponseContainer::DefaultResponseContainer.SetAllChannels(ECR_Block);

	for (auto Iter=DefaultChannelResponses.CreateConstIterator(); Iter; ++Iter)
	{
		const FCustomChannelSetup& CustomChannel = *Iter;
		int32 EnumIndex = CustomChannel.Channel;
		// make sure it is the range of channels we allow to change
		if ( IS_VALID_COLLISIONCHANNEL(EnumIndex) )
		{
			if ( CustomChannel.Name != NAME_None )
			{
				// before you set meta data, you'll have to save this value to modify 
				// ECollisionResponseContainer variables meta data
				FString VariableName = ChannelDisplayNames[EnumIndex].ToString();
				FString DisplayValue = CustomChannel.Name.ToString();

				// also has to set this for internal use
				ChannelDisplayNames[EnumIndex] = FName(*DisplayValue);

#if WITH_EDITOR
				// set displayvalue for this enum entry
				Enum->SetMetaData(*KeyName, *DisplayValue, EnumIndex);
				// also need to remove "Hidden"
				Enum->RemoveMetaData(*HiddenMeta, EnumIndex);
#endif 
				// now add MetaData type for trace type if it does
				if (CustomChannel.bTraceType)
				{
#if WITH_EDITOR
					// add to enum
					Enum->SetMetaData(*TraceType, *TraceValue, EnumIndex);
#endif
					// remove from all object queries
					FCollisionQueryFlag::Get().RemoveFromAllObjectsQueryFlag(CustomChannel.Channel);
					TraceTypeMapping.Add(CustomChannel.Channel);
				}
				// if it has display value
				else 
				{
#if WITH_EDITOR
					// add to enum
					Enum->RemoveMetaData(*TraceType, EnumIndex);
#endif
					ObjectTypeMapping.Add(CustomChannel.Channel);

					if (CustomChannel.bStaticObject)
					{
						// add to static object 
						FCollisionQueryFlag::Get().AddToAllStaticObjectsQueryFlag(CustomChannel.Channel);
					}
				}
#if WITH_EDITOR
				// now enum is fixed, so find member variable for the field
				UField* Field = FindField<UField>(Struct, FName(*VariableName));
				// I verified up in the class, this can't happen
				check (Field);
				Field->SetMetaData(*KeyName, *DisplayValue);
#endif
			}
			else
			{
				// missing name
				UE_LOG(LogCollisionProfile, Warning, TEXT("Name can't be empty for Channel (%d) "), EnumIndex );
			}

			// allow it to set default response
			FCollisionResponseContainer::DefaultResponseContainer.SetResponse((ECollisionChannel) EnumIndex, CustomChannel.DefaultResponse);
		}
		else
		{
			// you can't customize those channels
			UE_LOG(LogCollisionProfile, Warning, TEXT("Default Setup doesn't allow for predefined engine channels (%d) "), EnumIndex);
		}
	}

#if WITH_EDITOR
	// now propagate all changes to the channels to EObjectTypeQuery and ETraceTypeQuery for blueprint accessibility
	// this code is to show in editor more friendly, so it doesn't have to be set if it's not for editor
	int32 ObjectTypeEnumIndex = 0;
	int32 TraceTypeEnumIndex = 0;

	// first go through fill up ObjectType Enum
	for ( int32 EnumIndex=0; EnumIndex<NumEnum; ++EnumIndex )
	{
		// if not hidden
		const FString& Hidden = Enum->GetMetaData(*HiddenMeta, EnumIndex);
		if ( Hidden.IsEmpty() )
		{
			const FString& DisplayName = Enum->GetMetaData(*KeyName, EnumIndex);
			if ( !DisplayName.IsEmpty() )
			{
				// find out trace type or object type
				if (Enum->GetMetaData(*TraceType, EnumIndex) == TraceValue)
				{
					TraceTypeEnum->RemoveMetaData(*HiddenMeta, TraceTypeEnumIndex);
					TraceTypeEnum->SetMetaData(*KeyName, *DisplayName, TraceTypeEnumIndex);
					++TraceTypeEnumIndex;
				}
				else
				{
					ObjectTypeEnum->RemoveMetaData(*HiddenMeta, ObjectTypeEnumIndex);
					ObjectTypeEnum->SetMetaData(*KeyName, *DisplayName, ObjectTypeEnumIndex);
					++ObjectTypeEnumIndex;
				}
			}
		}
	}

	// make sure TraceTypeEnumIndex matches TraceTypeMapping
	check (TraceTypeMapping.Num() == TraceTypeEnumIndex);
	check (ObjectTypeMapping.Num() == ObjectTypeEnumIndex);
#endif

	// collision redirector has to be loaded before profile
	CollisionChannelRedirectsMap.Empty();

	for(auto Iter = CollisionChannelRedirects.CreateConstIterator(); Iter; ++Iter)
	{
		FName OldName = Iter->OldName;
		FName NewName = Iter->NewName;

		// at least we need to have OldName
		if(OldName!= NAME_None && NewName != NAME_None)
		{
			// add to pair
			CollisionChannelRedirectsMap.Add(OldName, NewName);
		}
		else
		{
			// print error 
			UE_LOG(LogCollisionProfile, Warning, TEXT("CollisionChannel Redirects : Name Can't be none (%s: %s)"), *OldName.ToString(), *NewName.ToString());
		}
	}

	// 2. Second loads all set up back to ResponseToChannels
	// this does a lot of iteration, but this only happens once loaded, so it's better to be convenient than efficient
	// fill up Profiles data
	FillProfileData(Profiles, Enum, KeyName, EditProfiles);

	// 3. It loads redirect data  - now time to load profile redirect
	ProfileRedirectsMap.Empty();

	// handle profile redirect here
	for(auto Iter = ProfileRedirects.CreateConstIterator(); Iter; ++Iter)
	{
		FName OldName = Iter->OldName;
		FName NewName = Iter->NewName;

		// at least we need to have OldName
		if(OldName!= NAME_None && NewName != NAME_None)
		{
			FCollisionResponseTemplate Template;

			// make sure the template exists
			if(FindProfileData(Profiles, NewName, Template))
			{
				// add to pair
				ProfileRedirectsMap.Add(OldName, NewName);
			}
			else
			{
				// print error
				UE_LOG(LogCollisionProfile, Warning, TEXT("ProfileRedirect (%s : %s) - New Name (\'%s\') isn't found "),
					*OldName.ToString(), *NewName.ToString(), *NewName.ToString());
			}
		}
	}

#if WITH_EDITOR
	if (bForceInit)
	{
		// go through objects, and see if we can reinitialize profile
		for(TObjectIterator<UPrimitiveComponent> PrimIt; PrimIt; ++PrimIt)
		{
			PrimIt->UpdateCollisionProfile();
		}
	}
#endif
}
void UGatherTextFromMetaDataCommandlet::GatherTextFromUObject(UField* const Field, const FGatherParameters& Arguments)
{
	// Gather for object.
	{
		if( !Field->HasMetaData( TEXT("DisplayName") ) )
		{
			Field->SetMetaData( TEXT("DisplayName"), *FName::NameToDisplayString( Field->GetName(), Field->IsA( UBoolProperty::StaticClass() ) ) );
		}

		for(int32 i = 0; i < Arguments.InputKeys.Num(); ++i)
		{
			FFormatNamedArguments PatternArguments;
			PatternArguments.Add( TEXT("FieldPath"), FText::FromString( Field->GetFullGroupName(false) ) );

			if( Field->HasMetaData( *Arguments.InputKeys[i] ) )
			{
				const FString& MetaDataValue = Field->GetMetaData(*Arguments.InputKeys[i]);
				if( !MetaDataValue.IsEmpty() )
				{
					PatternArguments.Add( TEXT("MetaDataValue"), FText::FromString(MetaDataValue) );

					const FString Namespace = Arguments.OutputNamespaces[i];
					FLocItem LocItem(MetaDataValue);
					FManifestContext Context;
					Context.Key = FText::Format(Arguments.OutputKeys[i], PatternArguments).ToString();
					Context.SourceLocation = FString::Printf(TEXT("From metadata for key %s of member %s in %s"), *Arguments.InputKeys[i], *Field->GetName(), *Field->GetFullGroupName(true));
					GatherManifestHelper->AddSourceText(Namespace, LocItem, Context);
				}
			}
		}
	}

	// For enums, also gather for enum values.
	{
		UEnum* Enum = Cast<UEnum>(Field);
		if(Enum)
		{
			const int32 ValueCount = Enum->NumEnums();
			for(int32 i = 0; i < ValueCount; ++i)
			{
				if( !Enum->HasMetaData(TEXT("DisplayName"), i) )
				{
					Enum->SetMetaData(TEXT("DisplayName"), *FName::NameToDisplayString(Enum->GetEnumName(i), false), i);
				}

				for(int32 j = 0; j < Arguments.InputKeys.Num(); ++j)
				{
					FFormatNamedArguments PatternArguments;
					PatternArguments.Add( TEXT("FieldPath"), FText::FromString( Enum->GetFullGroupName(false) + TEXT(".") + Enum->GetEnumName(i) ) );

					if( Enum->HasMetaData(*Arguments.InputKeys[j], i) )
					{
						const FString& MetaDataValue = Enum->GetMetaData(*Arguments.InputKeys[j], i);
						if( !MetaDataValue.IsEmpty() )
						{
							PatternArguments.Add( TEXT("MetaDataValue"), FText::FromString(MetaDataValue) );

							const FString Namespace = Arguments.OutputNamespaces[j];
							FLocItem LocItem(MetaDataValue);
							FManifestContext Context;
							Context.Key = FText::Format(Arguments.OutputKeys[j], PatternArguments).ToString();
							Context.SourceLocation = FString::Printf(TEXT("From metadata for key %s of enum value %s of enum %s in %s"), *Arguments.InputKeys[j], *Enum->GetEnumName(i), *Enum->GetName(), *Enum->GetFullGroupName(true));
							GatherManifestHelper->AddSourceText(Namespace, LocItem, Context);
						}
					}
				}
			}
		}
	}
}