InputModeRequests now use less-than operator to sort

Source/Integration/InputModeRequest.h

@@ -34,10 +34,7 @@ struct FlxInputModeRequest
 	FlxInputModeRequest() = default;
 
 	bool operator == (const FlxInputModeRequest &Other) const;
-
-	// True if this request wants any high-priority resource:
-	// keyboard focus, the mouse pointer, or input blocking.
-	bool IsHighPrio() const { return Focus != nullptr || ShowPointer || BlockInput; }
+	bool operator < (const FlxInputModeRequest &Other) const;
 
 	UPROPERTY(BlueprintReadWrite)
 	UUserWidget* Widget = nullptr;
@@ -73,19 +70,14 @@ private:
 	int32 NextSequenceNumber = 0;
 
 public:
-	using View = TArrayView<FlxInputModeRequest>;
-
 	// Get the requests array.
 	const TArray<FlxInputModeRequest> &GetRequests() const { return Requests; }
 
 	// Sanity check a request to see if it is reasonable.
 	static bool SanityCheck(const FlxInputModeRequest &Request);
 	
-	// Divide Requests into a high-priority slice and a low-priority slice.
-	void SplitHighLow(View &High, View &Low); 
-
 	// Apply a request.  Replaces any previous request by the same widget.
-	void Request(const FlxInputModeRequest &NewRequest);
+	void Request(const FlxInputModeRequest &NewRequest, bool UpdateSequence = true);
 
 	// Find the specified widget, and modify the 'EnableInputComponent'
 	// flag.  Adds the widget if it's not already present.
@@ -96,4 +88,11 @@ public:
 
 	// Remove any requests by dead widgets or widgets with no parents.
 	void GarbageCollect();
+
+private:
+	// Find specified widget.  If not present, returns Requests.Num()
+	int32 FindWidget(UUserWidget *Widget);
+
+	// Move item at Index to its proper place in the array by priority.
+	void BubbleItem(int32 Index);
 };