124 lines
4.1 KiB
C++
124 lines
4.1 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "LiveLinkSubjectKeyDetailCustomization.h"
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#include "DetailWidgetRow.h"
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#include "IDetailChildrenBuilder.h"
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#include "IPropertyUtilities.h"
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#define LOCTEXT_NAMESPACE "LiveLinkSubjectKeyDetailCustomization"
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TSharedRef<IPropertyTypeCustomization> FLiveLinkSubjectKeyDetailCustomization::MakeInstance()
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{
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return MakeShareable(new FLiveLinkSubjectKeyDetailCustomization);
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}
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void FLiveLinkSubjectKeyDetailCustomization::CustomizeHeader(TSharedRef<IPropertyHandle> InPropertyHandle, FDetailWidgetRow& HeaderRow, IPropertyTypeCustomizationUtils& CustomizationUtils)
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{
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StructPropertyHandle = InPropertyHandle;
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TSharedPtr<IPropertyUtilities> PropertyUtils = CustomizationUtils.GetPropertyUtilities();
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check(CastFieldChecked<FStructProperty>(StructPropertyHandle->GetProperty())->Struct == FLiveLinkSubjectKey::StaticStruct());
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HeaderRow.NameContent()
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[
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StructPropertyHandle->CreatePropertyNameWidget()
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]
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.ValueContent()
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.MinDesiredWidth(125.f)
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.MaxDesiredWidth(400.f)
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[
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SNew(SLiveLinkSubjectRepresentationPicker)
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.ShowRole(false)
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.ShowSource(true)
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.Font(CustomizationUtils.GetRegularFont())
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.HasMultipleValues(this, &FLiveLinkSubjectKeyDetailCustomization::HasMultipleValues)
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.Value(this, &FLiveLinkSubjectKeyDetailCustomization::GetValue)
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.OnValueChanged(this, &FLiveLinkSubjectKeyDetailCustomization::SetValue)
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].IsEnabled(MakeAttributeLambda([=] { return !InPropertyHandle->IsEditConst() && PropertyUtils->IsPropertyEditingEnabled(); }));
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}
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void FLiveLinkSubjectKeyDetailCustomization::CustomizeChildren(TSharedRef<IPropertyHandle> PropertyHandle, IDetailChildrenBuilder& ChildBuilder, IPropertyTypeCustomizationUtils& CustomizationUtils)
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{
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TSharedPtr<IPropertyUtilities> PropertyUtils = CustomizationUtils.GetPropertyUtilities();
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uint32 NumberOfChild;
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if (PropertyHandle->GetNumChildren(NumberOfChild) == FPropertyAccess::Success)
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{
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for (uint32 Index = 0; Index < NumberOfChild; ++Index)
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{
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TSharedRef<IPropertyHandle> ChildPropertyHandle = PropertyHandle->GetChildHandle(Index).ToSharedRef();
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ChildBuilder.AddProperty(ChildPropertyHandle)
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.ShowPropertyButtons(true)
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.IsEnabled(MakeAttributeLambda([=] { return !PropertyHandle->IsEditConst() && PropertyUtils->IsPropertyEditingEnabled(); }));
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}
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}
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}
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SLiveLinkSubjectRepresentationPicker::FLiveLinkSourceSubjectRole FLiveLinkSubjectKeyDetailCustomization::GetValue() const
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{
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TArray<const void*> RawData;
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StructPropertyHandle->AccessRawData(RawData);
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for (const void* RawPtr : RawData)
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{
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if (RawPtr)
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{
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return SLiveLinkSubjectRepresentationPicker::FLiveLinkSourceSubjectRole (*reinterpret_cast<const FLiveLinkSubjectKey*>(RawPtr));
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}
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}
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return SLiveLinkSubjectRepresentationPicker::FLiveLinkSourceSubjectRole();
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}
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void FLiveLinkSubjectKeyDetailCustomization::SetValue(SLiveLinkSubjectRepresentationPicker::FLiveLinkSourceSubjectRole NewValue)
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{
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FStructProperty* StructProperty = CastFieldChecked<FStructProperty>(StructPropertyHandle->GetProperty());
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TArray<void*> RawData;
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StructPropertyHandle->AccessRawData(RawData);
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FLiveLinkSubjectKey* PreviousValue = reinterpret_cast<FLiveLinkSubjectKey*>(RawData[0]);
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FLiveLinkSubjectKey NewSubjectKey = NewValue.ToSubjectKey();
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FString TextValue;
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StructProperty->Struct->ExportText(TextValue, &NewSubjectKey, PreviousValue, nullptr, EPropertyPortFlags::PPF_None, nullptr);
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ensure(StructPropertyHandle->SetValueFromFormattedString(TextValue, EPropertyValueSetFlags::DefaultFlags) == FPropertyAccess::Result::Success);
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}
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bool FLiveLinkSubjectKeyDetailCustomization::HasMultipleValues() const
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{
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TArray<const void*> RawData;
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StructPropertyHandle->AccessRawData(RawData);
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TOptional<FLiveLinkSubjectKey> CompareAgainst;
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for (const void* RawPtr : RawData)
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{
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if (RawPtr == nullptr)
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{
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if (CompareAgainst.IsSet())
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{
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return false;
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}
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}
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else
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{
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FLiveLinkSubjectKey ThisValue = *reinterpret_cast<const FLiveLinkSubjectKey*>(RawPtr);
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if (!CompareAgainst.IsSet())
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{
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CompareAgainst = ThisValue;
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}
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else if (!(ThisValue == CompareAgainst.GetValue()))
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{
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return true;
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}
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}
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}
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return false;
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}
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#undef LOCTEXT_NAMESPACE
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