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1fb1577293
Display name is now more readable when conversion functions are involved. Moved some conversion function code from MVVMEditorSubsystem to ConversionFunctionHelper so that it can be reused in the compiler. #rb patrick.boutot #rnx #preflight 633d7020164ef40c2e3f308d [CL 22362227 by sebastian nordgren in ue5-main branch]
1203 lines
48 KiB
C++
1203 lines
48 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "MVVMViewBlueprintCompiler.h"
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#include "MVVMWidgetBlueprintExtension_View.h"
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#include "Blueprint/WidgetTree.h"
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#include "Bindings/MVVMBindingHelper.h"
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#include "Bindings/MVVMCompiledBindingLibraryCompiler.h"
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#include "Bindings/MVVMFieldPathHelper.h"
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#include "EdGraphSchema_K2.h"
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#include "MVVMBlueprintView.h"
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#include "MVVMFunctionGraphHelper.h"
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#include "MVVMSubsystem.h"
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#include "MVVMViewModelBase.h"
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#include "MVVMViewModelBase.h"
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#include "WidgetBlueprintCompiler.h"
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#include "View/MVVMViewClass.h"
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namespace UE::MVVM::Private
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{
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void FMVVMViewBlueprintCompiler::AddErrorForBinding(FMVVMBlueprintViewBinding& Binding, const UWidgetBlueprint* WidgetBlueprint, const FString& Message) const
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{
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const FString BindingName = Binding.GetDisplayNameString(WidgetBlueprint);
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WidgetBlueprintCompilerContext.MessageLog.Error(*(BindingName + TEXT(": ") + Message));
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Binding.Errors.Add(FText::FromString(BindingName + TEXT(": ") + Message));
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}
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void FMVVMViewBlueprintCompiler::AddExtension(UWidgetBlueprintGeneratedClass* Class, UMVVMViewClass* ViewExtension)
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{
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WidgetBlueprintCompilerContext.AddExtension(Class, ViewExtension);
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}
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void FMVVMViewBlueprintCompiler::CleanOldData(UWidgetBlueprintGeneratedClass* ClassToClean, UObject* OldCDO)
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{
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// Clean old View
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if (!WidgetBlueprintCompilerContext.Blueprint->bIsRegeneratingOnLoad && WidgetBlueprintCompilerContext.bIsFullCompile)
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{
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auto RenameObjectToTransientPackage = [](UObject* ObjectToRename)
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{
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const ERenameFlags RenFlags = REN_DoNotDirty | REN_ForceNoResetLoaders | REN_DontCreateRedirectors;
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ObjectToRename->Rename(nullptr, GetTransientPackage(), RenFlags);
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ObjectToRename->SetFlags(RF_Transient);
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ObjectToRename->ClearFlags(RF_Public | RF_Standalone | RF_ArchetypeObject);
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FLinkerLoad::InvalidateExport(ObjectToRename);
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};
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TArray<UObject*> Children;
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const bool bIncludeNestedObjects = false;
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ForEachObjectWithOuter(ClassToClean, [&Children](UObject* Child)
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{
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if (Cast<UMVVMViewClass>(Child))
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{
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Children.Add(Child);
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}
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}, bIncludeNestedObjects);
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for (UObject* Child : Children)
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{
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RenameObjectToTransientPackage(Child);
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}
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}
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}
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void FMVVMViewBlueprintCompiler::CleanTemporaries(UWidgetBlueprintGeneratedClass* ClassToClean)
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{
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}
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void FMVVMViewBlueprintCompiler::CreateFunctions(UMVVMBlueprintView* BlueprintView)
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{
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if (!bAreSourcesCreatorValid || !bIsBindingsValid)
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{
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return;
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}
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for (const FCompilerSourceCreatorContext& SourceCreator : CompilerSourceCreatorContexts)
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{
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if (SourceCreator.SetterGraph)
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{
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if (!UE::MVVM::FunctionGraphHelper::GenerateViewModelSetter(WidgetBlueprintCompilerContext, SourceCreator.SetterGraph, SourceCreator.ViewModelContext.GetViewModelName()))
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(TEXT("The setter function for '%s' could not be generated."), *SourceCreator.ViewModelContext.GetDisplayName().ToString());
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continue;
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}
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}
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}
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}
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void FMVVMViewBlueprintCompiler::CreateVariables(const FWidgetBlueprintCompilerContext::FCreateVariableContext& Context, UMVVMBlueprintView* BlueprintView)
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{
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if (!BlueprintView)
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{
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return;
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}
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if (!bAreSourcesCreatorValid || !bAreSourceContextsValid || !bIsBindingsValid)
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{
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return;
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}
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if (Context.GetCompileType() == EKismetCompileType::SkeletonOnly)
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{
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CreateWidgetMap(Context, BlueprintView);
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CreateSourceLists(Context, BlueprintView);
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CreateFunctionsDeclaration(Context, BlueprintView);
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}
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auto CreateVariable = [&Context](const FCompilerSourceContext& SourceContext) -> FProperty*
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{
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FEdGraphPinType ViewModelPinType(UEdGraphSchema_K2::PC_Object, NAME_None, SourceContext.Class, EPinContainerType::None, false, FEdGraphTerminalType());
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FProperty* ViewModelProperty = Context.CreateVariable(SourceContext.PropertyName, ViewModelPinType);
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if (ViewModelProperty != nullptr)
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{
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ViewModelProperty->SetPropertyFlags(CPF_BlueprintVisible | CPF_BlueprintReadOnly | CPF_RepSkip
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| CPF_Transient | CPF_DuplicateTransient);
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ViewModelProperty->SetPropertyFlags(SourceContext.bExposeOnSpawn ? CPF_ExposeOnSpawn : CPF_DisableEditOnInstance);
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#if WITH_EDITOR
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if (!SourceContext.BlueprintSetter.IsEmpty())
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{
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ViewModelProperty->SetMetaData(FBlueprintMetadata::MD_PropertySetFunction, *SourceContext.BlueprintSetter);
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}
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if (!SourceContext.DisplayName.IsEmpty())
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{
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ViewModelProperty->SetMetaData(FBlueprintMetadata::MD_FunctionCategory, *SourceContext.DisplayName);
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}
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if (!SourceContext.CategoryName.IsEmpty())
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{
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ViewModelProperty->SetMetaData(FBlueprintMetadata::MD_FunctionCategory, *SourceContext.CategoryName);
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}
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if (SourceContext.bExposeOnSpawn)
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{
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ViewModelProperty->SetMetaData(FBlueprintMetadata::MD_ExposeOnSpawn, TEXT("true"));
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}
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#endif
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}
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return ViewModelProperty;
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};
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for (FCompilerSourceContext& SourceContext : CompilerSourceContexts)
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{
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SourceContext.Field = BindingHelper::FindFieldByName(Context.GetSkeletonGeneratedClass(), FMVVMBindingName(SourceContext.PropertyName));
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// The class is not linked yet. It may not be available yet.
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if (SourceContext.Field.IsEmpty())
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{
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for (FField* Field = Context.GetSkeletonGeneratedClass()->ChildProperties; Field != nullptr; Field = Field->Next)
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{
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if (Field->GetFName() == SourceContext.PropertyName)
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{
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if (FProperty* Property = CastField<FProperty>(Field))
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{
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SourceContext.Field = FMVVMFieldVariant(Property);
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break;
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}
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else
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The field for source '%s' exists but is not a property.")
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, *SourceContext.DisplayName));
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bAreSourcesCreatorValid = false;
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continue;
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}
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}
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}
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}
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// Reuse the property if found
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if (!SourceContext.Field.IsEmpty())
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{
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if (!BindingHelper::IsValidForSourceBinding(SourceContext.Field))
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The field for source '%s' exist but will is not accessible at runtime.")
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, *SourceContext.DisplayName));
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bAreSourcesCreatorValid = false;
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continue;
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}
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const FProperty* Property = SourceContext.Field.IsProperty() ? SourceContext.Field.GetProperty() : BindingHelper::GetReturnProperty(SourceContext.Field.GetFunction());
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const FObjectPropertyBase* ObjectProperty = CastField<const FObjectPropertyBase>(Property);
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const bool bIsCompatible = ObjectProperty && SourceContext.Class->IsChildOf(ObjectProperty->PropertyClass);
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if (!bIsCompatible)
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(TEXT("There is already a property named '%s' that is not compatible with source of the same name."), *SourceContext.DisplayName);
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bAreSourceContextsValid = false;
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continue;
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}
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}
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if (SourceContext.Field.IsEmpty())
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{
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SourceContext.Field = FMVVMConstFieldVariant(CreateVariable(SourceContext));
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}
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if (SourceContext.Field.IsEmpty())
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(TEXT("The variable for '%s' could not be created."), *SourceContext.DisplayName);
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bAreSourceContextsValid = false;
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continue;
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}
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}
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}
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void FMVVMViewBlueprintCompiler::CreateWidgetMap(const FWidgetBlueprintCompilerContext::FCreateVariableContext& Context, UMVVMBlueprintView* BlueprintView)
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{
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// The widget tree is not created yet for SKEL class.
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//Context.GetGeneratedClass()->GetWidgetTreeArchetype()
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WidgetNameToWidgetPointerMap.Reset();
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TArray<UWidget*> Widgets;
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UWidgetBlueprint* WidgetBPToScan = Context.GetWidgetBlueprint();
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while (WidgetBPToScan != nullptr)
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{
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Widgets = WidgetBPToScan->GetAllSourceWidgets();
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if (Widgets.Num() != 0)
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{
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break;
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}
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WidgetBPToScan = WidgetBPToScan->ParentClass && WidgetBPToScan->ParentClass->ClassGeneratedBy ? Cast<UWidgetBlueprint>(WidgetBPToScan->ParentClass->ClassGeneratedBy) : nullptr;
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}
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for (UWidget* Widget : Widgets)
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{
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WidgetNameToWidgetPointerMap.Add(Widget->GetFName(), Widget);
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}
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}
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void FMVVMViewBlueprintCompiler::CreateSourceLists(const FWidgetBlueprintCompilerContext::FCreateVariableContext& Context, UMVVMBlueprintView* BlueprintView)
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{
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CompilerSourceContexts.Reset();
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CompilerSourceCreatorContexts.Reset();
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TSet<FGuid> ViewModelsGuid;
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TSet<FName> WidgetSources;
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for (const FMVVMBlueprintViewModelContext& ViewModelContext : BlueprintView->GetViewModels())
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{
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if (!ViewModelContext.GetViewModelId().IsValid())
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(TEXT("The viewmodel context has an invalid Guid"));
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bAreSourcesCreatorValid = false;
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continue;
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}
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if (ViewModelsGuid.Contains(ViewModelContext.GetViewModelId()))
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' is present twice.")
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, *ViewModelContext.GetViewModelId().ToString()));
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bAreSourcesCreatorValid = false;
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continue;
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}
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ViewModelsGuid.Add(ViewModelContext.GetViewModelId());
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if (ViewModelContext.GetViewModelClass() == nullptr || !ViewModelContext.IsValid())
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' has an invalid class.")
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, *ViewModelContext.GetViewModelId().ToString()));
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bAreSourcesCreatorValid = false;
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continue;
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}
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const bool bCreateSetterFunction = ViewModelContext.bCreateSetterFunction || ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::Manual;
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int32 FoundSourceCreatorContextIndex = INDEX_NONE;
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if (Context.GetCompileType() == EKismetCompileType::SkeletonOnly)
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{
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FCompilerSourceCreatorContext SourceContext;
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SourceContext.ViewModelContext = ViewModelContext;
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SourceContext.Type = ECompilerSourceCreatorType::ViewModel;
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if (bCreateSetterFunction)
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{
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SourceContext.SetterFunctionName = TEXT("Set") + ViewModelContext.GetViewModelName().ToString();
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}
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FoundSourceCreatorContextIndex = CompilerSourceCreatorContexts.Emplace(MoveTemp(SourceContext));
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}
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else
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{
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FGuid ViewModelId = ViewModelContext.GetViewModelId();
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FoundSourceCreatorContextIndex = CompilerSourceCreatorContexts.IndexOfByPredicate([ViewModelId](const FCompilerSourceCreatorContext& Other)
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{
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return Other.ViewModelContext.GetViewModelId() == ViewModelId;
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});
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}
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checkf(FoundSourceCreatorContextIndex != INDEX_NONE, TEXT("The viewmodel was added after the skeleton was created?"));
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FCompilerSourceContext SourceVariable;
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SourceVariable.Class = ViewModelContext.GetViewModelClass();
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SourceVariable.PropertyName = ViewModelContext.GetViewModelName();
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SourceVariable.DisplayName = ViewModelContext.GetDisplayName().ToString();
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SourceVariable.CategoryName = TEXT("Viewmodel");
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SourceVariable.bExposeOnSpawn = bCreateSetterFunction;
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SourceVariable.BlueprintSetter = CompilerSourceCreatorContexts[FoundSourceCreatorContextIndex].SetterFunctionName;
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CompilerSourceContexts.Emplace(MoveTemp(SourceVariable));
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}
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bAreSourceContextsValid = bAreSourcesCreatorValid;
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// Only find the source first property and destination first property.
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//The full path will be tested later. We want to build the list of property needed.
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for (int32 Index = 0; Index < BlueprintView->GetNumBindings(); ++Index)
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{
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const FMVVMBlueprintViewBinding* BindingPtr = BlueprintView->GetBindingAt(Index);
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if (BindingPtr == nullptr)
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding number %d is invalid."), Index));
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bAreSourceContextsValid = false;
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continue;
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}
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const FMVVMBlueprintViewBinding& Binding = *BindingPtr;
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if (!Binding.bCompile)
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{
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continue;
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}
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FMVVMViewBlueprintCompiler* Self = this;
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auto GenerateCompilerSourceContext = [Self, Index, &ViewModelsGuid, &WidgetSources](const UWidgetBlueprintGeneratedClass* Class, const UMVVMBlueprintView* BlueprintView, const FMVVMBlueprintPropertyPath& PropertyPath) -> bool
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{
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if (PropertyPath.IsFromWidget())
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{
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if (PropertyPath.GetWidgetName().IsNone())
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{
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Self->WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding number %d has an invalid widget name."), Index));
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return false;
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}
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if (PropertyPath.GetWidgetName() == Class->ClassGeneratedBy->GetFName())
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{
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// it's the userwidget
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return true;
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}
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// If the widget doesn't have a property, add one automatically.
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if (!WidgetSources.Contains(PropertyPath.GetWidgetName()))
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{
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WidgetSources.Add(PropertyPath.GetWidgetName());
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UWidget** WidgetPtr = Self->WidgetNameToWidgetPointerMap.Find(PropertyPath.GetWidgetName());
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if (WidgetPtr == nullptr || *WidgetPtr == nullptr)
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{
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Self->WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding number %d has an invalid path. The widget '%s' could not be found."), Index, *PropertyPath.GetWidgetName().ToString()));
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return false;
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}
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UWidget* Widget = *WidgetPtr;
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FCompilerSourceContext SourceVariable;
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SourceVariable.Class = Widget->GetClass();
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SourceVariable.PropertyName = PropertyPath.GetWidgetName();
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SourceVariable.DisplayName = Widget->GetDisplayLabel();
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SourceVariable.CategoryName = TEXT("Widget");
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Self->CompilerSourceContexts.Emplace(MoveTemp(SourceVariable));
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}
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}
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else if (PropertyPath.IsFromViewModel())
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{
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const FMVVMBlueprintViewModelContext* SourceViewModelContext = BlueprintView->FindViewModel(PropertyPath.GetViewModelId());
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if (SourceViewModelContext == nullptr)
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{
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Self->WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding number %d has an invalid viewmodel."), Index));
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return false;
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}
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bool bFound = ViewModelsGuid.Contains(SourceViewModelContext->GetViewModelId());
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if (!bFound)
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{
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Self->WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding number %d has a viewmodel that was not added."), Index));
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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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Self->WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding number %d has a unknown path type."), Index));
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return false;
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}
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return true;
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};
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if (IsForwardBinding(Binding.BindingType) || IsBackwardBinding(Binding.BindingType))
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{
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bAreSourceContextsValid = GenerateCompilerSourceContext(Context.GetSkeletonGeneratedClass(), BlueprintView, Binding.ViewModelPath)
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&& GenerateCompilerSourceContext(Context.GetSkeletonGeneratedClass(), BlueprintView, Binding.WidgetPath)
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&& bAreSourceContextsValid;
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}
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}
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}
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void FMVVMViewBlueprintCompiler::CreateFunctionsDeclaration(const FWidgetBlueprintCompilerContext::FCreateVariableContext& Context, UMVVMBlueprintView* BlueprintView)
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{
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// Clean all previous intermediate function graph. It should stay alive. The graph lives on the Blueprint not on the class and it's used to generate the UFunction.
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{
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auto RenameObjectToTransientPackage = [](UObject* ObjectToRename)
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{
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const ERenameFlags RenFlags = REN_DontCreateRedirectors | REN_NonTransactional | REN_DoNotDirty;
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ObjectToRename->Rename(nullptr, GetTransientPackage(), RenFlags);
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ObjectToRename->SetFlags(RF_Transient);
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ObjectToRename->ClearFlags(RF_Public | RF_Standalone | RF_ArchetypeObject);
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FLinkerLoad::InvalidateExport(ObjectToRename);
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};
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for (UEdGraph* OldGraph : BlueprintView->TemporaryGraph)
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{
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if (OldGraph)
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{
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RenameObjectToTransientPackage(OldGraph);
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}
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}
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BlueprintView->TemporaryGraph.Reset();
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}
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for (FCompilerSourceCreatorContext& SourceCreator : CompilerSourceCreatorContexts)
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{
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if (!SourceCreator.SetterFunctionName.IsEmpty() && SourceCreator.Type == ECompilerSourceCreatorType::ViewModel)
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{
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ensure(SourceCreator.SetterGraph == nullptr);
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SourceCreator.SetterGraph = UE::MVVM::FunctionGraphHelper::CreateIntermediateFunctionGraph(
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WidgetBlueprintCompilerContext
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, SourceCreator.SetterFunctionName
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, (FUNC_BlueprintCallable | FUNC_Public)
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, TEXT("Viewmodel")
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, false);
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BlueprintView->TemporaryGraph.Add(SourceCreator.SetterGraph);
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if (SourceCreator.SetterGraph == nullptr || SourceCreator.SetterGraph->GetFName() != FName(*SourceCreator.SetterFunctionName))
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The setter name %s already exist and could not be autogenerated."), *SourceCreator.SetterFunctionName));
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}
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UE::MVVM::FunctionGraphHelper::AddFunctionArgument(SourceCreator.SetterGraph, SourceCreator.ViewModelContext.GetViewModelClass(), "Viewmodel");
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}
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}
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}
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bool FMVVMViewBlueprintCompiler::PreCompile(UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView)
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{
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if (!bAreSourcesCreatorValid || !bAreSourceContextsValid || !bIsBindingsValid)
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{
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return false;
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}
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const int32 NumBindings = BlueprintView->GetNumBindings();
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CompilerBindings.Reset(NumBindings*2);
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BindingSourceContexts.Reset(NumBindings*2);
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PreCompileBindingSources(Class, BlueprintView);
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PreCompileSourceCreators(Class, BlueprintView);
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PreCompileBindings(Class, BlueprintView);
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return bAreSourcesCreatorValid && bAreSourceContextsValid && bIsBindingsValid;
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}
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bool FMVVMViewBlueprintCompiler::Compile(UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView, UMVVMViewClass* ViewExtension)
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{
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if (!bAreSourcesCreatorValid || !bAreSourceContextsValid || !bIsBindingsValid)
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{
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return false;
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}
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TValueOrError<FCompiledBindingLibraryCompiler::FCompileResult, FString> CompileResult = BindingLibraryCompiler.Compile();
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if (CompileResult.HasError())
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{
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WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding compilation failed. %s"), *CompileResult.GetError()));
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return false;
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}
|
|
CompileSourceCreators(CompileResult.GetValue(), Class, BlueprintView, ViewExtension);
|
|
CompileBindings(CompileResult.GetValue(), Class, BlueprintView, ViewExtension);
|
|
|
|
bool bResult = bAreSourcesCreatorValid && bAreSourceContextsValid && bIsBindingsValid;
|
|
if (bResult)
|
|
{
|
|
ViewExtension->BindingLibrary = MoveTemp(CompileResult.GetValue().Library);
|
|
}
|
|
|
|
return bResult;
|
|
}
|
|
|
|
|
|
bool FMVVMViewBlueprintCompiler::PreCompileBindingSources(UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView)
|
|
{
|
|
const UWidgetBlueprint* WidgetBlueprint = WidgetBlueprintCompilerContext.WidgetBlueprint();
|
|
|
|
const int32 NumBindings = BlueprintView->GetNumBindings();
|
|
for (int32 Index = 0; Index < NumBindings; ++Index)
|
|
{
|
|
FMVVMBlueprintViewBinding* BindingPtr = BlueprintView->GetBindingAt(Index);
|
|
if (BindingPtr == nullptr)
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding at index '%d' is invalid."), Index));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
FMVVMBlueprintViewBinding& Binding = *BindingPtr;
|
|
if (!Binding.bCompile)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (IsForwardBinding(Binding.BindingType))
|
|
{
|
|
const TValueOrError<FBindingSourceContext, FString> CreatedBindingSourceContext = CreateBindingSourceContext(BlueprintView, Class, Binding.ViewModelPath);
|
|
if (CreatedBindingSourceContext.HasError())
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, FString::Printf(TEXT("The property path '%s' is invalid. %s")
|
|
, *PropertyPathToString(BlueprintView, Binding.ViewModelPath)
|
|
, *CreatedBindingSourceContext.GetError()));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
FBindingSourceContext BindingSourceContext = CreatedBindingSourceContext.GetValue();
|
|
if (!IsPropertyPathValid(BindingSourceContext.PropertyPath))
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, FString::Printf(TEXT("The property path '%s' is invalid."), *PropertyPathToString(BlueprintView, Binding.ViewModelPath)));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
if (BindingSourceContext.SourceClass == nullptr)
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, TEXT("Internal error. The binding could not find its source."));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
if (!BindingSourceContext.bIsRootWidget && BindingSourceContext.CompilerSourceContextIndex == INDEX_NONE)
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, TEXT("Internal error. The binding could not find its source."));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
BindingSourceContext.BindingIndex = Index;
|
|
BindingSourceContext.bIsForwardBinding = true;
|
|
BindingSourceContexts.Add(BindingSourceContext);
|
|
}
|
|
|
|
if (IsBackwardBinding(Binding.BindingType))
|
|
{
|
|
const TValueOrError<FBindingSourceContext, FString> CreatedBindingSourceContext = CreateBindingSourceContext(BlueprintView, Class, Binding.WidgetPath);
|
|
if (CreatedBindingSourceContext.HasError())
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, FString::Printf(TEXT("The property path '%s' is invalid. %s")
|
|
, *PropertyPathToString(BlueprintView, Binding.ViewModelPath)
|
|
, *CreatedBindingSourceContext.GetError()));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
FBindingSourceContext BindingSourceContext = CreatedBindingSourceContext.GetValue();
|
|
if (!IsPropertyPathValid(BindingSourceContext.PropertyPath))
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, FString::Printf(TEXT("The property path '%s' is invalid."), *PropertyPathToString(BlueprintView, Binding.WidgetPath)));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
if (BindingSourceContext.SourceClass == nullptr)
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, TEXT("Internal error. The binding could not find its source."));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
if (!BindingSourceContext.bIsRootWidget && BindingSourceContext.CompilerSourceContextIndex == INDEX_NONE)
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, TEXT("Internal error. The binding could not find its source."));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
BindingSourceContext.BindingIndex = Index;
|
|
BindingSourceContext.bIsForwardBinding = false;
|
|
BindingSourceContexts.Add(BindingSourceContext);
|
|
}
|
|
}
|
|
|
|
return bIsBindingsValid;
|
|
}
|
|
|
|
|
|
bool FMVVMViewBlueprintCompiler::PreCompileSourceCreators(UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView)
|
|
{
|
|
if (!bAreSourcesCreatorValid)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
for (FCompilerSourceCreatorContext& SourceCreatorContext : CompilerSourceCreatorContexts)
|
|
{
|
|
FMVVMViewClass_SourceCreator CompiledSourceCreator;
|
|
|
|
if (SourceCreatorContext.Type == ECompilerSourceCreatorType::ViewModel)
|
|
{
|
|
const FMVVMBlueprintViewModelContext& ViewModelContext = SourceCreatorContext.ViewModelContext;
|
|
checkf(ViewModelContext.GetViewModelClass(), TEXT("The viewmodel class is invalid. It was checked in CreateSourceList"));
|
|
|
|
if (ViewModelContext.GetViewModelClass()->HasAllClassFlags(CLASS_Deprecated))
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Warning(*FString::Printf(TEXT("The viewmodel type '%s' is deprecated and should not be used for '%s'. Please update it in the View Binding panel under Manage ViewModels.")
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()
|
|
, *ViewModelContext.GetDisplayName().ToString()));
|
|
}
|
|
|
|
if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::Manual)
|
|
{
|
|
}
|
|
else if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::CreateInstance)
|
|
{
|
|
if (ViewModelContext.GetViewModelClass()->HasAllClassFlags(CLASS_Abstract))
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel type '%s' is abstract and can't be created for '%s'. You can change it in the View Binding panel under Manage ViewModels.")
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()
|
|
, *ViewModelContext.GetDisplayName().ToString()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
}
|
|
else if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::PropertyPath)
|
|
{
|
|
if (ViewModelContext.ViewModelPropertyPath.IsEmpty())
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' has an invalid Getter. You can select a new one in the View Binding panel under Manage ViewModels.")
|
|
, *ViewModelContext.GetDisplayName().ToString()));
|
|
bAreSourcesCreatorValid = true;
|
|
continue;
|
|
}
|
|
|
|
// Generate a path to read the value at runtime
|
|
TValueOrError<TArray<FMVVMConstFieldVariant>, FString> GeneratedField = FieldPathHelper::GenerateFieldPathList(Class, ViewModelContext.ViewModelPropertyPath, true);
|
|
if (GeneratedField.HasError())
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' (%s) has an invalid Getter. %s")
|
|
, *ViewModelContext.GetDisplayName().ToString()
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()
|
|
, *GeneratedField.GetError()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
|
|
TValueOrError<FCompiledBindingLibraryCompiler::FFieldPathHandle, FString> ReadFieldPathResult = BindingLibraryCompiler.AddObjectFieldPath(GeneratedField.GetValue(), ViewModelContext.GetViewModelClass(), true);
|
|
if (ReadFieldPathResult.HasError())
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' (%s) has an invalid Getter. %s")
|
|
, *ViewModelContext.GetDisplayName().ToString()
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()
|
|
, *ReadFieldPathResult.GetError()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
|
|
SourceCreatorContext.ReadPropertyPath = ReadFieldPathResult.StealValue();
|
|
}
|
|
else if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::GlobalViewModelCollection)
|
|
{
|
|
if (ViewModelContext.GlobalViewModelIdentifier.IsNone())
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' (%s) doesn't have a valid Global identifier. You can specify a new one in the View Binding panel under Manage ViewModels.")
|
|
, *ViewModelContext.GetDisplayName().ToString()
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' (%s) doesn't have a valid creation type. You can select one in the View Binding panel under Manage ViewModels.")
|
|
, *ViewModelContext.GetDisplayName().ToString()
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()));
|
|
bAreSourcesCreatorValid = true;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
return bAreSourcesCreatorValid;
|
|
}
|
|
|
|
|
|
bool FMVVMViewBlueprintCompiler::CompileSourceCreators(const FCompiledBindingLibraryCompiler::FCompileResult& CompileResult, UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView, UMVVMViewClass* ViewExtension)
|
|
{
|
|
if (!bAreSourcesCreatorValid)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
for (const FCompilerSourceCreatorContext& SourceCreatorContext : CompilerSourceCreatorContexts)
|
|
{
|
|
if (SourceCreatorContext.Type == ECompilerSourceCreatorType::ViewModel)
|
|
{
|
|
const FMVVMBlueprintViewModelContext& ViewModelContext = SourceCreatorContext.ViewModelContext;
|
|
|
|
FMVVMViewClass_SourceCreator CompiledSourceCreator;
|
|
|
|
if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::Manual)
|
|
{
|
|
CompiledSourceCreator = FMVVMViewClass_SourceCreator::MakeManual(ViewModelContext.GetViewModelName(), ViewModelContext.GetViewModelClass());
|
|
}
|
|
else if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::CreateInstance)
|
|
{
|
|
CompiledSourceCreator = FMVVMViewClass_SourceCreator::MakeInstance(ViewModelContext.GetViewModelName(), ViewModelContext.GetViewModelClass());
|
|
}
|
|
else if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::PropertyPath)
|
|
{
|
|
const FMVVMVCompiledFieldPath* CompiledFieldPath = CompileResult.FieldPaths.Find(SourceCreatorContext.ReadPropertyPath);
|
|
if (CompiledFieldPath == nullptr)
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' initialization binding was not generated.")
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
CompiledSourceCreator = FMVVMViewClass_SourceCreator::MakeFieldPath(ViewModelContext.GetViewModelName(), ViewModelContext.GetViewModelClass(), *CompiledFieldPath, ViewModelContext.bOptional);
|
|
}
|
|
else if (ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::GlobalViewModelCollection)
|
|
{
|
|
if (ViewModelContext.GlobalViewModelIdentifier.IsNone())
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' doesn't have a valid Global identifier.")
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
|
|
FMVVMViewModelContext GlobalViewModelInstance;
|
|
GlobalViewModelInstance.ContextClass = ViewModelContext.GetViewModelClass();
|
|
GlobalViewModelInstance.ContextName = ViewModelContext.GlobalViewModelIdentifier;
|
|
if (!GlobalViewModelInstance.IsValid())
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The context for viewmodel '%s' could not be created.")
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
|
|
CompiledSourceCreator = FMVVMViewClass_SourceCreator::MakeGlobalContext(ViewModelContext.GetViewModelName(), MoveTemp(GlobalViewModelInstance), ViewModelContext.bOptional);
|
|
}
|
|
else
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The viewmodel '%s' doesn't have a valid creation type.")
|
|
, *ViewModelContext.GetViewModelClass()->GetDisplayNameText().ToString()));
|
|
bAreSourcesCreatorValid = false;
|
|
continue;
|
|
}
|
|
|
|
ViewExtension->SourceCreators.Add(MoveTemp(CompiledSourceCreator));
|
|
}
|
|
}
|
|
|
|
return bAreSourcesCreatorValid;
|
|
}
|
|
|
|
|
|
bool FMVVMViewBlueprintCompiler::PreCompileBindings(UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView)
|
|
{
|
|
if (!bAreSourceContextsValid || !bIsBindingsValid)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
const UWidgetBlueprint* WidgetBlueprint = WidgetBlueprintCompilerContext.WidgetBlueprint();
|
|
|
|
for (const FBindingSourceContext& BindingSourceContext : BindingSourceContexts)
|
|
{
|
|
FMVVMBlueprintViewBinding* BindingPtr = BlueprintView->GetBindingAt(BindingSourceContext.BindingIndex);
|
|
check(BindingPtr);
|
|
FMVVMBlueprintViewBinding& Binding = *BindingPtr;
|
|
|
|
FMVVMViewBlueprintCompiler* Self = this;
|
|
auto AddBinding = [Self](UWidgetBlueprintGeneratedClass* Class, TArrayView<const UE::MVVM::FMVVMConstFieldVariant> GetterField, TArrayView<const UE::MVVM::FMVVMConstFieldVariant> SetterFields, const UFunction* ConversionFunction) -> TValueOrError<FCompilerBinding, FString>
|
|
{
|
|
FCompilerBinding Result;
|
|
|
|
if (GetterField.Num() != 0)
|
|
{
|
|
// Generate a path to read the value at runtime
|
|
TValueOrError<TArray<FMVVMConstFieldVariant>, FString> GeneratedField = FieldPathHelper::GenerateFieldPathList(GetterField, true);
|
|
if (GeneratedField.HasError())
|
|
{
|
|
return MakeError(FString::Printf(TEXT("Couldn't create the source field path '%s'. %s")
|
|
, *::UE::MVVM::FieldPathHelper::ToString(GetterField)
|
|
, *GeneratedField.GetError()));
|
|
}
|
|
|
|
TValueOrError<FCompiledBindingLibraryCompiler::FFieldPathHandle, FString> FieldPathResult = Self->BindingLibraryCompiler.AddFieldPath(GeneratedField.GetValue(), true);
|
|
if (FieldPathResult.HasError())
|
|
{
|
|
return MakeError(FString::Printf(TEXT("Couldn't create the source field path '%s'. %s")
|
|
, *::UE::MVVM::FieldPathHelper::ToString(GetterField)
|
|
, *FieldPathResult.GetError()));
|
|
}
|
|
Result.SourceRead = FieldPathResult.StealValue();
|
|
}
|
|
|
|
{
|
|
TValueOrError<TArray<FMVVMConstFieldVariant>, FString> GeneratedField = FieldPathHelper::GenerateFieldPathList(SetterFields, false);
|
|
if (GeneratedField.HasError())
|
|
{
|
|
return MakeError(FString::Printf(TEXT("Couldn't create the destination field path '%s'. %s")
|
|
, *::UE::MVVM::FieldPathHelper::ToString(SetterFields)
|
|
, *GeneratedField.GetError()));
|
|
}
|
|
|
|
TValueOrError<FCompiledBindingLibraryCompiler::FFieldPathHandle, FString> FieldPathResult = Self->BindingLibraryCompiler.AddFieldPath(GeneratedField.GetValue(), false);
|
|
if (FieldPathResult.HasError())
|
|
{
|
|
return MakeError(FString::Printf(TEXT("Couldn't create the destination field path '%s'. %s")
|
|
, *::UE::MVVM::FieldPathHelper::ToString(SetterFields)
|
|
, *FieldPathResult.GetError()));
|
|
}
|
|
Result.DestinationWrite = FieldPathResult.StealValue();
|
|
}
|
|
|
|
if (ConversionFunction != nullptr)
|
|
{
|
|
TValueOrError<FCompiledBindingLibraryCompiler::FFieldPathHandle, FString> FieldPathResult = Self->BindingLibraryCompiler.AddConversionFunctionFieldPath(Class, ConversionFunction);
|
|
if (FieldPathResult.HasError())
|
|
{
|
|
return MakeError(FString::Printf(TEXT("Couldn't create the conversion function field path '%s'. %s")
|
|
, *ConversionFunction->GetPathName()
|
|
, *FieldPathResult.GetError()));
|
|
}
|
|
Result.ConversionFunction = FieldPathResult.StealValue();
|
|
Result.bIsConversionFunctionComplex = BindingHelper::IsValidForComplexRuntimeConversion(ConversionFunction);
|
|
}
|
|
|
|
// Sanity check.
|
|
if (GetterField.Num() == 0 && (ConversionFunction == nullptr || !BindingHelper::IsValidForComplexRuntimeConversion(ConversionFunction)))
|
|
{
|
|
return MakeError(FString::Printf(TEXT("The binding should have a getter.")));
|
|
}
|
|
if (GetterField.Num() != 0 && ConversionFunction == nullptr && BindingHelper::IsValidForComplexRuntimeConversion(ConversionFunction))
|
|
{
|
|
return MakeError(FString::Printf(TEXT("The binding has a complex conversion function and a getter.")));
|
|
}
|
|
|
|
// Generate the binding
|
|
TValueOrError<FCompiledBindingLibraryCompiler::FBindingHandle, FString> BindingResult = Self->BindingLibraryCompiler.AddBinding(Result.SourceRead, Result.DestinationWrite, Result.ConversionFunction);
|
|
if (BindingResult.HasError())
|
|
{
|
|
return MakeError(BindingResult.StealError());
|
|
}
|
|
Result.BindingHandle = BindingResult.StealValue();
|
|
|
|
return MakeValue(Result);
|
|
};
|
|
|
|
auto AddFieldId = [Self](UClass* SourceContextClass, bool bNotifyFieldValueChangedRequired, EMVVMBindingMode BindingMode, FName FieldToListenTo) -> TValueOrError<FCompiledBindingLibraryCompiler::FFieldIdHandle, FString>
|
|
{
|
|
if (!IsOneTimeBinding(BindingMode) && bNotifyFieldValueChangedRequired)
|
|
{
|
|
return Self->BindingLibraryCompiler.AddFieldId(SourceContextClass, FieldToListenTo);
|
|
}
|
|
return MakeValue(FCompiledBindingLibraryCompiler::FFieldIdHandle());
|
|
};
|
|
|
|
TValueOrError<FCompiledBindingLibraryCompiler::FFieldIdHandle, FString> AddFieldResult = AddFieldId(BindingSourceContext.SourceClass, true, Binding.BindingType, BindingSourceContext.FieldId.GetFieldName());
|
|
if (AddFieldResult.HasError())
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, *FString::Printf(TEXT("The binding could not create its source. %s"), *AddFieldResult.GetError()));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
TArray<UE::MVVM::FMVVMConstFieldVariant> SetterPath;
|
|
{
|
|
const FMVVMBlueprintPropertyPath& DestinationPath = BindingSourceContext.bIsForwardBinding ? Binding.WidgetPath : Binding.ViewModelPath;
|
|
SetterPath = CreateBindingDestinationPath(BlueprintView, Class, DestinationPath);
|
|
if (!IsPropertyPathValid(SetterPath))
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, FString::Printf(TEXT("The property path '%s' is invalid."), *PropertyPathToString(BlueprintView, DestinationPath)));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
FMemberReference ConversionFunctionReference = BindingSourceContext.bIsForwardBinding ? Binding.Conversion.SourceToDestinationFunction : Binding.Conversion.DestinationToSourceFunction;
|
|
FName ConversionFunctionWrapper = BindingSourceContext.bIsForwardBinding ? Binding.Conversion.SourceToDestinationWrapper : Binding.Conversion.DestinationToSourceWrapper;
|
|
if (!ConversionFunctionWrapper.IsNone())
|
|
{
|
|
ConversionFunctionReference.SetSelfMember(ConversionFunctionWrapper);
|
|
}
|
|
|
|
const UFunction* ConversionFunction = ConversionFunctionReference.ResolveMember<UFunction>(Class);
|
|
if (!ConversionFunctionWrapper.IsNone() && ConversionFunction == nullptr)
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, TEXT("A complex conversion function was created but could not be found."));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
TValueOrError<FCompilerBinding, FString> AddBindingResult = AddBinding(Class, BindingSourceContext.PropertyPath, SetterPath, ConversionFunction);
|
|
if (AddBindingResult.HasError())
|
|
{
|
|
AddErrorForBinding(Binding, WidgetBlueprint, FString::Printf(TEXT("The binding could not be created. %s"), *AddBindingResult.GetError()));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
FCompilerBinding NewBinding = AddBindingResult.StealValue();
|
|
NewBinding.BindingIndex = BindingSourceContext.BindingIndex;
|
|
NewBinding.CompilerSourceContextIndex = BindingSourceContext.CompilerSourceContextIndex;
|
|
NewBinding.FieldIdHandle = AddFieldResult.StealValue();
|
|
NewBinding.bSourceIsUserWidget = BindingSourceContext.bIsRootWidget;
|
|
NewBinding.bFieldIdNeeded = !IsOneTimeBinding(Binding.BindingType);
|
|
CompilerBindings.Emplace(NewBinding);
|
|
}
|
|
|
|
return bIsBindingsValid;
|
|
}
|
|
|
|
|
|
bool FMVVMViewBlueprintCompiler::CompileBindings(const FCompiledBindingLibraryCompiler::FCompileResult& CompileResult, UWidgetBlueprintGeneratedClass* Class, UMVVMBlueprintView* BlueprintView, UMVVMViewClass* ViewExtension)
|
|
{
|
|
if (!bIsBindingsValid)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
for (const FCompilerBinding& CompileBinding : CompilerBindings)
|
|
{
|
|
const FMVVMBlueprintViewBinding& ViewBinding = *BlueprintView->GetBindingAt(CompileBinding.BindingIndex);
|
|
|
|
FMVVMViewClass_CompiledBinding NewBinding;
|
|
|
|
check(CompileBinding.CompilerSourceContextIndex != INDEX_NONE);
|
|
NewBinding.SourcePropertyName = CompilerSourceContexts[CompileBinding.CompilerSourceContextIndex].PropertyName;
|
|
|
|
const FMVVMVCompiledFieldId* CompiledFieldId = CompileResult.FieldIds.Find(CompileBinding.FieldIdHandle);
|
|
if (CompiledFieldId == nullptr && CompileBinding.bFieldIdNeeded)
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The field id for binding '%d' was not generated.")
|
|
, CompileBinding.BindingIndex));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
const FMVVMVCompiledBinding* CompiledBinding = CompileResult.Bindings.Find(CompileBinding.BindingHandle);
|
|
if (CompiledBinding == nullptr)
|
|
{
|
|
WidgetBlueprintCompilerContext.MessageLog.Error(*FString::Printf(TEXT("The binding '%d' was not generated.")
|
|
, CompileBinding.BindingIndex));
|
|
bIsBindingsValid = false;
|
|
continue;
|
|
}
|
|
|
|
bool bIsOptional = false;
|
|
if (CompilerSourceCreatorContexts.IsValidIndex(CompileBinding.CompilerSourceContextIndex))
|
|
{
|
|
const FMVVMBlueprintViewModelContext& ModelContext = CompilerSourceCreatorContexts[CompileBinding.CompilerSourceContextIndex].ViewModelContext;
|
|
if (ModelContext.IsValid())
|
|
{
|
|
bIsOptional = ModelContext.bOptional;
|
|
}
|
|
}
|
|
|
|
NewBinding.FieldId = CompiledFieldId ? *CompiledFieldId : FMVVMVCompiledFieldId();
|
|
NewBinding.Binding = *CompiledBinding;
|
|
NewBinding.UpdateMode = ViewBinding.UpdateMode;
|
|
|
|
NewBinding.Flags = 0;
|
|
NewBinding.Flags |= (ViewBinding.bEnabled) ? FMVVMViewClass_CompiledBinding::EBindingFlags::EnabledByDefault : 0;
|
|
NewBinding.Flags |= (IsForwardBinding(ViewBinding.BindingType)) ? FMVVMViewClass_CompiledBinding::EBindingFlags::ForwardBinding : 0;
|
|
NewBinding.Flags |= (ViewBinding.BindingType == EMVVMBindingMode::TwoWay) ? FMVVMViewClass_CompiledBinding::EBindingFlags::TwoWayBinding : 0;
|
|
NewBinding.Flags |= (IsOneTimeBinding(ViewBinding.BindingType)) ? FMVVMViewClass_CompiledBinding::EBindingFlags::OneTime : 0;
|
|
NewBinding.Flags |= (bIsOptional) ? FMVVMViewClass_CompiledBinding::EBindingFlags::ViewModelOptional : 0;
|
|
NewBinding.Flags |= (CompileBinding.bIsConversionFunctionComplex) ? FMVVMViewClass_CompiledBinding::EBindingFlags::ConversionFunctionIsComplex : 0;
|
|
|
|
ViewExtension->CompiledBindings.Emplace(MoveTemp(NewBinding));
|
|
}
|
|
|
|
return bIsBindingsValid;
|
|
}
|
|
|
|
|
|
const FMVVMViewBlueprintCompiler::FCompilerSourceCreatorContext* FMVVMViewBlueprintCompiler::FindViewModelSource(FGuid Id) const
|
|
{
|
|
return CompilerSourceCreatorContexts.FindByPredicate([Id](const FCompilerSourceCreatorContext& Other)
|
|
{
|
|
return Other.Type == ECompilerSourceCreatorType::ViewModel ? Other.ViewModelContext.GetViewModelId() == Id : false;
|
|
});
|
|
}
|
|
|
|
|
|
TValueOrError<FMVVMViewBlueprintCompiler::FBindingSourceContext, FString> FMVVMViewBlueprintCompiler::CreateBindingSourceContext(const UMVVMBlueprintView* BlueprintView, const UWidgetBlueprintGeneratedClass* Class, const FMVVMBlueprintPropertyPath& PropertyPath)
|
|
{
|
|
if (PropertyPath.IsEmpty())
|
|
{
|
|
ensureAlways(false);
|
|
return MakeError(TEXT("Empty property path found. This is legal."));
|
|
}
|
|
|
|
FBindingSourceContext Result;
|
|
if (PropertyPath.IsFromViewModel())
|
|
{
|
|
Result.bIsRootWidget = false;
|
|
|
|
const FMVVMBlueprintViewModelContext* SourceViewModelContext = BlueprintView->FindViewModel(PropertyPath.GetViewModelId());
|
|
check(SourceViewModelContext);
|
|
const FName SourceName = SourceViewModelContext->GetViewModelName();
|
|
Result.CompilerSourceContextIndex = CompilerSourceContexts.IndexOfByPredicate([SourceName](const FCompilerSourceContext& Other) { return Other.PropertyName == SourceName; });
|
|
check(Result.CompilerSourceContextIndex != INDEX_NONE);
|
|
|
|
Result.SourceClass = CompilerSourceContexts[Result.CompilerSourceContextIndex].Class;
|
|
Result.PropertyPath = CreatePropertyPath(Class, CompilerSourceContexts[Result.CompilerSourceContextIndex].PropertyName, PropertyPath.GetFields());
|
|
}
|
|
else if (PropertyPath.IsFromWidget())
|
|
{
|
|
const FName SourceName = PropertyPath.GetWidgetName();
|
|
Result.bIsRootWidget = SourceName == Class->ClassGeneratedBy->GetFName();
|
|
if (Result.bIsRootWidget)
|
|
{
|
|
Result.CompilerSourceContextIndex = INDEX_NONE;
|
|
Result.SourceClass = Class->ClassGeneratedBy->GetClass();
|
|
Result.PropertyPath = CreatePropertyPath(Class, FName(), PropertyPath.GetFields());
|
|
}
|
|
else
|
|
{
|
|
Result.CompilerSourceContextIndex = CompilerSourceContexts.IndexOfByPredicate([SourceName](const FCompilerSourceContext& Other) { return Other.PropertyName == SourceName; });
|
|
check(Result.CompilerSourceContextIndex != INDEX_NONE);
|
|
Result.SourceClass = CompilerSourceContexts[Result.CompilerSourceContextIndex].Class;
|
|
Result.PropertyPath = CreatePropertyPath(Class, CompilerSourceContexts[Result.CompilerSourceContextIndex].PropertyName, PropertyPath.GetFields());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ensureAlwaysMsgf(false, TEXT("Not supported yet."));
|
|
}
|
|
|
|
// The path may contains another INotifyFieldValueChanged
|
|
TValueOrError<FieldPathHelper::FParsedBindingInfo, FString> BindingInfoResult = FieldPathHelper::GetBindingInfoFromFieldPath(Class, Result.PropertyPath);
|
|
if (BindingInfoResult.HasError())
|
|
{
|
|
return MakeError(BindingInfoResult.StealError());
|
|
}
|
|
|
|
const FieldPathHelper::FParsedBindingInfo& BindingInfo = BindingInfoResult.GetValue();
|
|
Result.FieldId = BindingInfo.NotifyFieldId;
|
|
|
|
const bool bCreateADynamicSourceEntry = BindingInfo.ViewModelIndex > 1
|
|
&& BindingInfo.NotifyFieldClass != nullptr;
|
|
|
|
// The INotifyFieldValueChanged/viewmodel is not the fist property. Creates the ViaBinding source entries.
|
|
if (bCreateADynamicSourceEntry)
|
|
{
|
|
Result.SourceClass = BindingInfo.NotifyFieldClass;
|
|
Result.CompilerSourceContextIndex = INDEX_NONE;
|
|
Result.bIsRootWidget = false;
|
|
|
|
FString InterfacePath = FieldPathHelper::ToString(BindingInfo.NotifyFieldInterfacePath);
|
|
int32 SourceCreatorContextIndex = CompilerSourceCreatorContexts.IndexOfByPredicate([&InterfacePath](const FCompilerSourceCreatorContext& Other)
|
|
{
|
|
return (Other.Type == ECompilerSourceCreatorType::ViewModel)
|
|
? (Other.ViewModelContext.CreationType == EMVVMBlueprintViewModelContextCreationType::PropertyPath
|
|
&& Other.ViewModelContext.ViewModelPropertyPath == InterfacePath)
|
|
: false;
|
|
});
|
|
|
|
|
|
// Add if the path doesn't already exists
|
|
if (!CompilerSourceCreatorContexts.IsValidIndex(SourceCreatorContextIndex))
|
|
{
|
|
return MakeError(TEXT("The field in the path is from a viewmodel that is not the root of the path. This is not yet supported."));
|
|
}
|
|
|
|
Result.PropertyPath.RemoveAt(0, BindingInfo.ViewModelIndex);
|
|
if (CompilerSourceCreatorContexts[SourceCreatorContextIndex].Type == ECompilerSourceCreatorType::ViewModel)
|
|
{
|
|
Result.CompilerSourceContextIndex = SourceCreatorContextIndex;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (Result.SourceClass != BindingInfo.NotifyFieldClass)
|
|
{
|
|
return MakeError(TEXT("Internal Error. The class doesn't match"));
|
|
}
|
|
}
|
|
|
|
return MakeValue(Result);
|
|
}
|
|
|
|
|
|
TArray<FMVVMConstFieldVariant> FMVVMViewBlueprintCompiler::CreateBindingDestinationPath(const UMVVMBlueprintView* BlueprintView, const UWidgetBlueprintGeneratedClass* Class, const FMVVMBlueprintPropertyPath& PropertyPath) const
|
|
{
|
|
if (PropertyPath.IsEmpty())
|
|
{
|
|
ensureAlwaysMsgf(false, TEXT("Empty property path found. This is legal."));
|
|
return TArray<FMVVMConstFieldVariant>();
|
|
}
|
|
|
|
if (PropertyPath.IsFromViewModel())
|
|
{
|
|
const FMVVMBlueprintViewModelContext* SourceViewModelContext = BlueprintView->FindViewModel(PropertyPath.GetViewModelId());
|
|
check(SourceViewModelContext);
|
|
FName DestinationName = SourceViewModelContext->GetViewModelName();
|
|
const int32 DestinationVariableContextIndex = CompilerSourceContexts.IndexOfByPredicate([DestinationName](const FCompilerSourceContext& Other) { return Other.PropertyName == DestinationName; });
|
|
check(DestinationVariableContextIndex != INDEX_NONE);
|
|
|
|
return CreatePropertyPath(Class, CompilerSourceContexts[DestinationVariableContextIndex].PropertyName, PropertyPath.GetFields());
|
|
}
|
|
else if (PropertyPath.IsFromWidget())
|
|
{
|
|
FName DestinationName = PropertyPath.GetWidgetName();
|
|
checkf(!DestinationName.IsNone(), TEXT("The destination should have been checked and set bAreSourceContextsValid."));
|
|
const bool bSourceIsUserWidget = DestinationName == Class->ClassGeneratedBy->GetFName();
|
|
if (bSourceIsUserWidget)
|
|
{
|
|
return CreatePropertyPath(Class, FName(), PropertyPath.GetFields());
|
|
}
|
|
else
|
|
{
|
|
const int32 DestinationVariableContextIndex = CompilerSourceContexts.IndexOfByPredicate([DestinationName](const FCompilerSourceContext& Other) { return Other.PropertyName == DestinationName; });
|
|
check(DestinationVariableContextIndex != INDEX_NONE);
|
|
|
|
return CreatePropertyPath(Class, CompilerSourceContexts[DestinationVariableContextIndex].PropertyName, PropertyPath.GetFields());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ensureAlwaysMsgf(false, TEXT("Not supported yet."));
|
|
return CreatePropertyPath(Class, FName(), PropertyPath.GetFields());
|
|
}
|
|
}
|
|
|
|
|
|
FString FMVVMViewBlueprintCompiler::PropertyPathToString(const UMVVMBlueprintView* BlueprintView, const FMVVMBlueprintPropertyPath& PropertyPath) const
|
|
{
|
|
if (PropertyPath.IsEmpty())
|
|
{
|
|
return FString();
|
|
}
|
|
|
|
TStringBuilder<512> Result;
|
|
if (PropertyPath.IsFromViewModel())
|
|
{
|
|
if (const FMVVMBlueprintViewModelContext* SourceViewModelContext = BlueprintView->FindViewModel(PropertyPath.GetViewModelId()))
|
|
{
|
|
Result << SourceViewModelContext->GetViewModelName();
|
|
}
|
|
else
|
|
{
|
|
Result << TEXT("<none>");
|
|
}
|
|
}
|
|
else if (PropertyPath.IsFromWidget())
|
|
{
|
|
Result << PropertyPath.GetWidgetName();
|
|
}
|
|
else
|
|
{
|
|
Result << TEXT("<none>");
|
|
}
|
|
|
|
FString BasePropertyPath = PropertyPath.GetBasePropertyPath();
|
|
if (BasePropertyPath.Len())
|
|
{
|
|
Result << TEXT('.');
|
|
Result << MoveTemp(BasePropertyPath);
|
|
}
|
|
return Result.ToString();
|
|
}
|
|
|
|
TArray<FMVVMConstFieldVariant> FMVVMViewBlueprintCompiler::CreatePropertyPath(const UClass* Class, FName PropertyName, TArray<FMVVMConstFieldVariant> Properties) const
|
|
{
|
|
if (PropertyName.IsNone())
|
|
{
|
|
return Properties;
|
|
}
|
|
|
|
check(Class);
|
|
FMVVMConstFieldVariant NewProperty = BindingHelper::FindFieldByName(Class, FMVVMBindingName(PropertyName));
|
|
Properties.Insert(NewProperty, 0);
|
|
return Properties;
|
|
}
|
|
|
|
|
|
bool FMVVMViewBlueprintCompiler::IsPropertyPathValid(TArrayView<const FMVVMConstFieldVariant> PropertyPath) const
|
|
{
|
|
for (const FMVVMConstFieldVariant& Field : PropertyPath)
|
|
{
|
|
if (Field.IsEmpty())
|
|
{
|
|
return false;
|
|
}
|
|
if (Field.IsProperty() && Field.GetProperty() == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
if (Field.IsFunction() && Field.GetFunction() == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
} //namespace
|