97 lines
2.6 KiB
Markdown
97 lines
2.6 KiB
Markdown
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# HideInDetailsView
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- **功能描述：** 把该UAttributeSet子类里的属性隐藏在FGameplayAttribute的选项列表里。
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- **使用位置：** UCLASS, UPROPERTY
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- **引擎模块：** GAS
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- **元数据类型：** bool
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- **限制类型：** UAttributeSet
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- **关联项：** [HideFromModifiers](../HideFromModifiers/HideFromModifiers.md), [SystemGameplayAttribute](../SystemGameplayAttribute/SystemGameplayAttribute.md)
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- **常用程度：** ★★★
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把该UAttributeSet子类里的属性隐藏在FGameplayAttribute的选项列表里。
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可用在UCLASS上隐藏掉整个类里的所有属性，也可以用在某个特定属性上只隐藏该属性。
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在源码里用到的例子是UAbilitySystemTestAttributeSet，因为其就是一个专门用来测试的AS，因此希望不影响正常的选项列表。
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## 测试代码：
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```cpp
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UCLASS()
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class UMyAttributeSet : public UAttributeSet
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{
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GENERATED_BODY()
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public:
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Core")
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float HP = 100.f;
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Core", meta = (HideInDetailsView))
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float HP_HideInDetailsView = 100.f;
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};
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UCLASS(meta = (HideInDetailsView))
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class UMyAttributeSet_Hide : public UAttributeSet
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{
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GENERATED_BODY()
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public:
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Core")
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float HP = 100.f;
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};
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UCLASS()
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class UMyAttributeSetTest : public UObject
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{
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GENERATED_BODY()
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public:
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UPROPERTY(BlueprintReadWrite, EditAnywhere, Category = "GAS")
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FGameplayAttribute MyAttribute;
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};
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```
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## 测试效果：
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可见只能选到UMyAttributeSet.HP属性，无法选择到UMyAttributeSet_Hide里的选项。
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## 原理：
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```cpp
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PropertyModule.RegisterCustomPropertyTypeLayout( "GameplayAttribute", FOnGetPropertyTypeCustomizationInstance::CreateStatic( &FAttributePropertyDetails::MakeInstance ) );
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void FGameplayAttribute::GetAllAttributeProperties(TArray<FProperty*>& OutProperties, FString FilterMetaStr, bool UseEditorOnlyData)
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{
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for (TObjectIterator<UClass> ClassIt; ClassIt; ++ClassIt)
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{
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if (UseEditorOnlyData)
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{
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#if WITH_EDITOR
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// Allow entire classes to be filtered globally
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if (Class->HasMetaData(TEXT("HideInDetailsView")))
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{
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continue;
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}
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#endif
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}
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for (TFieldIterator<FProperty> PropertyIt(Class, EFieldIteratorFlags::ExcludeSuper); PropertyIt; ++PropertyIt)
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{
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FProperty* Property = *PropertyIt;
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if (UseEditorOnlyData)
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{
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// Allow properties to be filtered globally (never show up)
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if (Property->HasMetaData(TEXT("HideInDetailsView")))
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{
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continue;
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}
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#endif
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}
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OutProperties.Add(Property);
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}
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}
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}
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```
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