72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Components/ComboBox.h"
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#include "Styling/DefaultStyleCache.h"
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#include UE_INLINE_GENERATED_CPP_BY_NAME(ComboBox)
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#define LOCTEXT_NAMESPACE "UMG"
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/////////////////////////////////////////////////////
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// UComboBox
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UComboBox::UComboBox(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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bIsFocusable = true;
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ScrollBarStyle = UE::Slate::Private::FDefaultStyleCache::GetRuntime().GetScrollBarStyle();
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}
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void UComboBox::ReleaseSlateResources(bool bReleaseChildren)
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{
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Super::ReleaseSlateResources(bReleaseChildren);
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MyComboBox.Reset();
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}
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TSharedRef<SWidget> UComboBox::RebuildWidget()
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{
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TSet<UObject*> UniqueItems(Items);
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Items = UniqueItems.Array();
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MyComboBox =
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SNew(SComboBox<UObject*>)
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.OptionsSource(&ToRawPtrTArrayUnsafe(Items))
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.OnGenerateWidget(BIND_UOBJECT_DELEGATE(SComboBox<UObject*>::FOnGenerateWidget, HandleGenerateWidget))
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.IsFocusable(bIsFocusable)
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.ScrollBarStyle(&ScrollBarStyle)
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;
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return MyComboBox.ToSharedRef();
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}
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TSharedRef<SWidget> UComboBox::HandleGenerateWidget(UObject* Item) const
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{
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// Call the user's delegate to see if they want to generate a custom widget bound to the data source.
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if ( OnGenerateWidgetEvent.IsBound() )
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{
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UWidget* Widget = OnGenerateWidgetEvent.Execute(Item);
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if ( Widget != nullptr )
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{
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return Widget->TakeWidget();
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}
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}
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// If a row wasn't generated just create the default one, a simple text block of the item's name.
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return SNew(STextBlock).Text(Item ? FText::FromString(Item->GetName()) : LOCTEXT("null", "null"));
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}
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#if WITH_EDITOR
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const FText UComboBox::GetPaletteCategory()
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{
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return LOCTEXT("Misc", "Misc");
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}
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#endif
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/////////////////////////////////////////////////////
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#undef LOCTEXT_NAMESPACE
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