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| 1 | + |
| 2 | +#include "JavascriptClassViewer.h" |
| 3 | +#include "Modules/ModuleManager.h" |
| 4 | +#include "ClassViewerModule.h" |
| 5 | +#include "ClassViewerFilter.h" |
| 6 | + |
| 7 | +#define LOCTEXT_NAMESPACE "JavascriptClassViewer" |
| 8 | + |
| 9 | +class FClassFilter : public IClassViewerFilter |
| 10 | +{ |
| 11 | +public: |
| 12 | + /** All children of these classes will be included unless filtered out by another setting. */ |
| 13 | + TSet< const UClass* > AllowedChildrenOfClasses; |
| 14 | + |
| 15 | + TSet< const UClass* > DisallowedClasses; |
| 16 | + |
| 17 | + /** Disallowed class flags. */ |
| 18 | + EClassFlags DisallowedClassFlags; |
| 19 | + |
| 20 | + virtual bool IsClassAllowed(const FClassViewerInitializationOptions& InInitOptions, const UClass* InClass, TSharedRef< FClassViewerFilterFuncs > InFilterFuncs) override |
| 21 | + { |
| 22 | + return !InClass->HasAnyClassFlags(DisallowedClassFlags) && InFilterFuncs->IfInClassesSet(DisallowedClasses, InClass) != EFilterReturn::Passed |
| 23 | + && InFilterFuncs->IfInChildOfClassesSet(AllowedChildrenOfClasses, InClass) != EFilterReturn::Failed; |
| 24 | + } |
| 25 | + |
| 26 | + virtual bool IsUnloadedClassAllowed(const FClassViewerInitializationOptions& InInitOptions, const TSharedRef< const IUnloadedBlueprintData > InUnloadedClassData, TSharedRef< FClassViewerFilterFuncs > InFilterFuncs) override |
| 27 | + { |
| 28 | + return !InUnloadedClassData->HasAnyClassFlags(DisallowedClassFlags) && InFilterFuncs->IfInClassesSet(DisallowedClasses, InUnloadedClassData) != EFilterReturn::Passed |
| 29 | + && InFilterFuncs->IfInChildOfClassesSet(AllowedChildrenOfClasses, InUnloadedClassData) != EFilterReturn::Failed; |
| 30 | + } |
| 31 | +}; |
| 32 | + |
| 33 | +UJavascriptClassViewer::UJavascriptClassViewer(const FObjectInitializer& ObjectInitializer) |
| 34 | + : Super(ObjectInitializer) |
| 35 | +{ |
| 36 | +} |
| 37 | + |
| 38 | +TSharedRef<SWidget> UJavascriptClassViewer::RebuildWidget() |
| 39 | +{ |
| 40 | + if (IsDesignTime()) |
| 41 | + { |
| 42 | + return RebuildDesignWidget( |
| 43 | + SNew(SBox) |
| 44 | + .HAlign(HAlign_Center) |
| 45 | + .VAlign(VAlign_Center) |
| 46 | + [ |
| 47 | + SNew(STextBlock) |
| 48 | + .Text(LOCTEXT("JavascriptClassViewer", "JavascriptClassViewer")) |
| 49 | + ] |
| 50 | + ); |
| 51 | + } |
| 52 | + else |
| 53 | + { |
| 54 | + if (OnGetDefaultValue.IsBound()) |
| 55 | + { |
| 56 | + DefaultClass = OnGetDefaultValue.Execute(); |
| 57 | + } |
| 58 | + |
| 59 | + return SNew(SHorizontalBox) |
| 60 | + + SHorizontalBox::Slot() |
| 61 | + .AutoWidth() |
| 62 | + .VAlign(VAlign_Center) |
| 63 | + [ |
| 64 | + SNew(SWrapBox) |
| 65 | + .PreferredWidth(150.f) |
| 66 | + + SWrapBox::Slot() |
| 67 | + .Padding(FMargin(0, 0, 5.0f, 0)) |
| 68 | + .VAlign(VAlign_Center) |
| 69 | + [ |
| 70 | + SNew(SHorizontalBox) |
| 71 | + + SHorizontalBox::Slot() |
| 72 | + .AutoWidth() |
| 73 | + .Padding(2, 0) |
| 74 | + .MaxWidth(100.0f) |
| 75 | + [ |
| 76 | + SAssignNew(ClassViewerAnchor, SComboButton) |
| 77 | + .ContentPadding(FMargin(2, 2, 2, 1)) |
| 78 | + .MenuPlacement(MenuPlacement_BelowAnchor) |
| 79 | + .ButtonContent() |
| 80 | + [ |
| 81 | + SNew(STextBlock) |
| 82 | + .Font(FEditorStyle::GetFontStyle("PropertyWindow.NormalFont")) |
| 83 | + .Text(TAttribute<FText>::Create([this]() { return OnGetComboTextValue(); })) |
| 84 | + .ToolTipText(TAttribute<FText>::Create([this]() { return GetObjectToolTip(); })) |
| 85 | + ] |
| 86 | + .OnGetMenuContent(FOnGetContent::CreateLambda([this]() { return GeneratePathPicker(); })) |
| 87 | + ] |
| 88 | + // Use button |
| 89 | + + SHorizontalBox::Slot() |
| 90 | + .AutoWidth() |
| 91 | + .Padding(1, 0) |
| 92 | + .VAlign(VAlign_Center) |
| 93 | + [ |
| 94 | + SNew(SButton) |
| 95 | + .ButtonStyle(FEditorStyle::Get(), "NoBorder") |
| 96 | + .OnClicked(FOnClicked::CreateLambda([this]() { return OnClickUse(); })) |
| 97 | + .ContentPadding(1.f) |
| 98 | + .ToolTipText(NSLOCTEXT("GraphEditor", "ObjectGraphPin_Use_Tooltip", "Use asset browser selection")) |
| 99 | + [ |
| 100 | + SNew(SImage) |
| 101 | + .Image(FEditorStyle::GetBrush(TEXT("PropertyWindow.Button_Use"))) |
| 102 | + ] |
| 103 | + ] |
| 104 | + // Browse button |
| 105 | + + SHorizontalBox::Slot() |
| 106 | + .AutoWidth() |
| 107 | + .Padding(1, 0) |
| 108 | + .VAlign(VAlign_Center) |
| 109 | + [ |
| 110 | + SNew(SButton) |
| 111 | + .ButtonStyle(FEditorStyle::Get(), "NoBorder") |
| 112 | + .OnClicked(FOnClicked::CreateLambda([this]() { return OnClickBrowse(); })) |
| 113 | + .ContentPadding(0) |
| 114 | + .ToolTipText(NSLOCTEXT("GraphEditor", "ObjectGraphPin_Browse_Tooltip", "Browse")) |
| 115 | + [ |
| 116 | + SNew(SImage) |
| 117 | + .Image(FEditorStyle::GetBrush(TEXT("PropertyWindow.Button_Browse"))) |
| 118 | + ] |
| 119 | + ] |
| 120 | + ] |
| 121 | + ]; |
| 122 | + } |
| 123 | +} |
| 124 | + |
| 125 | +FReply UJavascriptClassViewer::OnClickUse() |
| 126 | +{ |
| 127 | + FEditorDelegates::LoadSelectedAssetsIfNeeded.Broadcast(); |
| 128 | + |
| 129 | + const UClass* SelectedClass = GEditor->GetFirstSelectedClass(CategoryClass); |
| 130 | + if (SelectedClass != NULL) |
| 131 | + { |
| 132 | + DefaultClass = const_cast<UClass*>(SelectedClass); |
| 133 | + |
| 134 | + if (OnSetDefaultValue.IsBound()) |
| 135 | + { |
| 136 | + OnSetDefaultValue.Execute(this->GetValue()); |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | + return FReply::Handled(); |
| 141 | +} |
| 142 | + |
| 143 | +FText UJavascriptClassViewer::GetValue() const |
| 144 | +{ |
| 145 | + FText Value; |
| 146 | + if (DefaultClass != NULL) |
| 147 | + { |
| 148 | + Value = FText::FromString(DefaultClass->GetFullName()); |
| 149 | + } |
| 150 | + else |
| 151 | + { |
| 152 | + Value = FText::GetEmpty(); |
| 153 | + } |
| 154 | + |
| 155 | + return Value; |
| 156 | +} |
| 157 | + |
| 158 | +FText UJavascriptClassViewer::GetObjectToolTip() const |
| 159 | +{ |
| 160 | + return GetValue(); |
| 161 | +} |
| 162 | + |
| 163 | +FReply UJavascriptClassViewer::OnClickBrowse() |
| 164 | +{ |
| 165 | + if (DefaultClass != NULL) |
| 166 | + { |
| 167 | + TArray<UObject*> Objects; |
| 168 | + Objects.Add(DefaultClass); |
| 169 | + |
| 170 | + GEditor->SyncBrowserToObjects(Objects); |
| 171 | + } |
| 172 | + |
| 173 | + return FReply::Handled(); |
| 174 | +} |
| 175 | + |
| 176 | +FText UJavascriptClassViewer::OnGetComboTextValue() const |
| 177 | +{ |
| 178 | + FText Value = LOCTEXT("DefaultComboText", "Select Class"); |
| 179 | + |
| 180 | + if (CategoryClass != NULL) |
| 181 | + { |
| 182 | + if (UField* Field = Cast<UField>(DefaultClass)) |
| 183 | + { |
| 184 | + Value = Field->GetDisplayNameText(); |
| 185 | + } |
| 186 | + } |
| 187 | + |
| 188 | + return Value; |
| 189 | +} |
| 190 | + |
| 191 | +TSharedRef<SWidget> UJavascriptClassViewer::GeneratePathPicker() |
| 192 | +{ |
| 193 | + FClassViewerModule& ClassViewerModule = FModuleManager::Get().LoadModuleChecked<FClassViewerModule>(TEXT("ClassViewer")); |
| 194 | + FClassViewerInitializationOptions Options; |
| 195 | + Options.bShowNoneOption = true; |
| 196 | + TSharedPtr<FClassFilter> Filter = MakeShareable(new FClassFilter); |
| 197 | + Filter->DisallowedClassFlags = CLASS_Abstract | CLASS_Deprecated | CLASS_NewerVersionExists; |
| 198 | + |
| 199 | + // This class and its children are the classes that we can show objects for |
| 200 | + for (UClass* AllowedChildrenOfClass : AllowedChildrenOfClasses) |
| 201 | + { |
| 202 | + Filter->AllowedChildrenOfClasses.Add(AllowedChildrenOfClass); |
| 203 | + } |
| 204 | + Options.ClassFilter = Filter; |
| 205 | + |
| 206 | + return |
| 207 | + SNew(SBox) |
| 208 | + .HeightOverride(300) |
| 209 | + .WidthOverride(300) |
| 210 | + [ |
| 211 | + SNew(SBorder) |
| 212 | + .BorderImage(FEditorStyle::GetBrush("Menu.Background")) |
| 213 | + [ |
| 214 | + ClassViewerModule.CreateClassViewer(Options, |
| 215 | + FOnClassPicked::CreateLambda([&](UClass* InChosenClass) |
| 216 | + { |
| 217 | + if (DefaultClass != InChosenClass) |
| 218 | + { |
| 219 | + // Close the Class Viewer |
| 220 | + ClassViewerAnchor->SetIsOpen(false); |
| 221 | + |
| 222 | + DefaultClass = InChosenClass; |
| 223 | + |
| 224 | + if (OnSetDefaultValue.IsBound()) |
| 225 | + { |
| 226 | + OnSetDefaultValue.Execute(this->GetValue()); |
| 227 | + } |
| 228 | + } |
| 229 | + } |
| 230 | + )) |
| 231 | + ] |
| 232 | + ]; |
| 233 | +} |
| 234 | + |
| 235 | +#undef LOCTEXT_NAMESPACE |
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