BlueRoseNote/03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/DetailsPanel/EditConditionHides/EditConditionHides.md

EditConditionHides

• 功能描述： 在已经有EditCondition的情况下，指定该属性在EditCondition不满足的情况下隐藏起来。
• 使用位置： UPROPERTY
• 元数据类型： bool
• 关联项： EditCondition
• 常用程度： ★★★★★

在已经有EditCondition的情况下，指定该属性在EditCondition不满足的情况下隐藏起来。

测试代码：

UCLASS(BlueprintType)
class INSIDER_API UMyProperty_EditCondition_Test :public UObject
{
	GENERATED_BODY()
public:
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Property)
	bool MyBool;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = Property, meta = (EditConditionHides, EditCondition = "MyBool"))
	int32 MyInt_EditCondition_Hides = 123;

public:
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PropertyExpression)
	int32 MyFirstInt = 123;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PropertyExpression)
	int32 MySecondInt = 123;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = PropertyExpression, meta = (EditConditionHides, EditCondition = "(MyFirstInt+MySecondInt)==500"))
	int32 MyInt_EditConditionExpression_Hides = 123;
};

测试效果：

下面的图中可以明显见到两个属性随着条件的满足显示了出来。

原理：

其实就是加了个是否显示的判断。

bool FPropertyNode::IsOnlyVisibleWhenEditConditionMet() const
{
	static const FName Name_EditConditionHides("EditConditionHides");
	if (Property.IsValid() && Property->HasMetaData(Name_EditConditionHides))
	{
		return HasEditCondition();
	}

	return false;
}