chore: fix potential crash due to garbage collection (#3671)

Author: ImmutableJeffrey

Source/SampleGame426/Public/UI/Inventory/SearchNFTsWidget.h

@@ -39,7 +39,7 @@ class SAMPLEGAME426_API USearchNfTsWidget : public UActivatableWidgetWithControl
 	virtual void NativeOnActivated() override;
 	virtual void NativeOnDeactivated() override;
 	/* UActivatableWidget interface */
-	
+
 	/* UActivatableWidgetWithControlPanels interface */
 	virtual void SetupControlButtons(class UAWStackWithControlPanels* HostLayer) override;
 	/* UActivatableWidgetWithControlPanels interface */
@@ -58,7 +58,7 @@ class SAMPLEGAME426_API USearchNfTsWidget : public UActivatableWidgetWithControl
 	 * @param ItemWidget A pointer to the UItemWidget representing the item.
 	 */
 	void OnItemSelection(bool IsSelected, UItemWidget* ItemWidget);
-	
+
 private:
 	/**
 	 * Handles the pagination of inventory API query results.
@@ -118,7 +118,7 @@ class SAMPLEGAME426_API USearchNfTsWidget : public UActivatableWidgetWithControl
 	 */
 	UFUNCTION()
 	void OnProcessDialogAction(UDialog* DialogPtr, EDialogResult Result);
-	
+
 	void ConfirmListing(const FString& ListingId);
 	void OnGetListing(const ImmutablezkEVMAPI::APIOrdersApi::GetListingResponse& Response);
 
@@ -130,12 +130,20 @@ class SAMPLEGAME426_API USearchNfTsWidget : public UActivatableWidgetWithControl
 	UPROPERTY(Transient)
 	UControlPanelButton* NextPageButton = nullptr;
 
-private:
+protected:
 	TWeakObjectPtr<UMarketplacePolicy> Policy;
-	USearchNFTsItemWidget* SelectedItemWidget = nullptr;
+
 	ImmutablezkEVMAPI::APIPage PageCursors;
-	UControlPanelButton* SellButton = nullptr;
-	UControlPanelButton* CancelSellButton = nullptr;
-	UDialog* ProcessingDialog = nullptr;
 
-};
+	UPROPERTY(BlueprintReadOnly)
+	TObjectPtr<USearchNFTsItemWidget> SelectedItemWidget;
+
+	UPROPERTY(BlueprintReadOnly)
+	TObjectPtr<UControlPanelButton> SellButton;
+
+	UPROPERTY(BlueprintReadOnly)
+	TObjectPtr<UControlPanelButton> CancelSellButton;
+
+	UPROPERTY(BlueprintReadOnly)
+	TObjectPtr<UDialog> ProcessingDialog;
+};

Source/SampleGame426/Public/UI/Marketplace/SearchStacksListingWidget.h

@@ -7,7 +7,6 @@
 
 #include "SearchStacksListingWidget.generated.h"
 
-
 /**
  * @class USearchStacksListingWidget
  * @ingroup Marketplace
@@ -26,10 +25,10 @@ class SAMPLEGAME426_API USearchStacksListingWidget : public UActivatableWidgetWi
 	/* IMarketplaceOpenAPIProcessorInterface interface */
 
 	/* UActivatableWidgetWithControlPanels interface */
-	virtual void SetupControlButtons(class UAWStackWithControlPanels* HostLayer) override;	
+	virtual void SetupControlButtons(class UAWStackWithControlPanels* HostLayer) override;
 	virtual void Refresh() override;
 	/* UActivatableWidgetWithControlPanels interface */
-	
+
 protected:
 	/**
 	 * Adds a NFT general information such as description, dates etc.
@@ -124,12 +123,16 @@ class SAMPLEGAME426_API USearchStacksListingWidget : public UActivatableWidgetWi
 	 */
 	void OnControlButtonClicked(FGameplayTag ButtonTag);
 
-	
 protected:
 	UPROPERTY(BlueprintReadOnly, meta=(BindWidget))
 	class USearchStacksListing_ListingsWidget* Listings = nullptr;
 
-	UItemWidget* SelectedItem = nullptr;
+	UPROPERTY(BlueprintReadOnly)
+	TObjectPtr<UItemWidget> SelectedItem = nullptr;
+
+	UPROPERTY(BlueprintReadOnly)
 	UControlPanelButton* BuyButton = nullptr;
+
+	UPROPERTY(BlueprintReadOnly)
 	UDialog* ProcessingDialog = nullptr;
-};
+};

Source/SampleGame426/Public/UI/Marketplace/SearchStacksWidget.h

@@ -15,7 +15,6 @@ enum class ESearchStacks_SortCategories : uint8
 	Price
 };
 
-
 /**
  * @class USearchStacksWidget
  * @ingroup Marketplace
@@ -33,15 +32,15 @@ class SAMPLEGAME426_API USearchStacksWidget : public UActivatableWidgetWithContr
 	/* UActivatableWidgetWithControlPanels interface */
 	virtual void Refresh() override;
 	/* UActivatableWidgetWithControlPanels interface */
-	
+
 	/**
 	 * Refreshes the item list in the marketplace search stacks widget. Overrides IItemListInterface::RefreshItemList.
 	 *
 	 * @param PageCursor An optional string representing the cursor for pagination. 
 	 *                   If provided, the item list will be refreshed starting from the specified page cursor.
 	 */
 	virtual void RefreshItemList(TOptional<FString> PageCursor) override;
-	
+
 	// Get the currently selected item widget
 	UItemWidget* GetSelectedItem() const { return SelectedItemWidget; }
 
@@ -89,14 +88,18 @@ class SAMPLEGAME426_API USearchStacksWidget : public UActivatableWidgetWithContr
 	UPROPERTY(EditAnywhere, Category = "Marketplace")
 	TSoftClassPtr<class USearchStacksListingWidget> SearchStacksListingWidgetClass;
 
-private:
+protected:
 	ImmutablezkEVMAPI::APIPage PageCursors;
-	UItemWidget* SelectedItemWidget = nullptr;
+
+	UPROPERTY(BlueprintReadOnly)
+	TObjectPtr<UItemWidget> SelectedItemWidget;
+
 	UPROPERTY(Transient)
-	UControlPanelButton* PreviousPageButton = nullptr;
+	TObjectPtr<UControlPanelButton> PreviousPageButton;
+
 	UPROPERTY(Transient)
-	UControlPanelButton* NextPageButton = nullptr;
+	TObjectPtr<UControlPanelButton> NextPageButton;
+
 	UPROPERTY(Transient)
-	UControlPanelButton* NFTInfoButton = nullptr;
-	
-};
+	TObjectPtr<UControlPanelButton> NFTInfoButton;
+};