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#rnx #rb none #ROBOMERGE-SOURCE: CL 10869241 via CL 10869527 via CL 10869904 #ROBOMERGE-BOT: (v613-10869866) [CL 10870586 by ryan durand in Main branch]
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Misc/Attribute.h"
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#include "Widgets/DeclarativeSyntaxSupport.h"
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#include "Widgets/SCompoundWidget.h"
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#include "Framework/SlateDelegates.h"
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#include "Widgets/Views/STableViewBase.h"
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#include "Widgets/Views/STableRow.h"
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class SComboButton;
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template <typename ItemType> class SListView;
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/** A delegate type invoked when a selection changes somewhere. */
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DECLARE_DELEGATE_RetVal_OneParam(FText, FGetComboItemDisplayString, int32);
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//Class implementation to create combo box
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class GRAPHEDITOR_API SPinComboBox : public SCompoundWidget
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{
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public:
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typedef SListView< TSharedPtr<int32> > SComboList;
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typedef TSlateDelegates< TSharedPtr<int32> >::FOnSelectionChanged FOnSelectionChanged;
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SLATE_BEGIN_ARGS( SPinComboBox ){}
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SLATE_ATTRIBUTE( TArray< TSharedPtr<int32> >, ComboItemList )
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SLATE_ATTRIBUTE( FString, VisibleText )
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SLATE_EVENT( FOnSelectionChanged, OnSelectionChanged )
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SLATE_EVENT( FGetComboItemDisplayString, OnGetDisplayName )
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SLATE_EVENT( FGetComboItemDisplayString, OnGetTooltip )
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SLATE_END_ARGS()
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//Construct combo box using combo button and combo list
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void Construct( const FArguments& InArgs );
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//Function to return currently selected string
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const TSharedPtr<int32> GetSelectedItem()
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{
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return CurrentSelection.Pin();
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}
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private:
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//Function to set the newly selected item
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void OnSelectionChangedInternal( TSharedPtr<int32> NewSelection, ESelectInfo::Type SelectInfo );
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//Get string to display
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FText OnGetVisibleTextInternal() const
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{
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return FText::FromString(VisibleText.Get());
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}
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// Function to create each row of the combo widget
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TSharedRef<ITableRow> OnGenerateComboWidget( TSharedPtr<int32> InComboIndex, const TSharedRef<STableViewBase>& OwnerTable );
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FText GetRowString(int32 RowIndex) const
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{
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return OnGetDisplayName.Execute(RowIndex);
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}
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/** Callback for Slate to retrieve the tooltip */
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FText GetRowTooltip(int32 RowIndex) const
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{
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return OnGetTooltip.Execute(RowIndex);
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}
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private:
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/** List of items in our combo box. Only generated once as combo items dont change at runtime */
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TArray< TSharedPtr<int32> > ComboItemList;
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TAttribute< FString > VisibleText;
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TSharedPtr< SComboButton > ComboButton;
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TSharedPtr< SComboList > ComboList;
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FOnSelectionChanged OnSelectionChanged;
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TWeakPtr<int32> CurrentSelection;
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FGetComboItemDisplayString OnGetDisplayName;
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/** Delegate for finding the tooltip */
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FGetComboItemDisplayString OnGetTooltip;
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};
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