// Copyright (c) 2018 The Peacenet & Alkaline Thunder.

#pragma once

#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "Fonts/SlateFontInfo.h"
#include "SPeacegateTerminalWidget.h"
#include "PTerminalWidget.generated.h"

//Underlying Slate terminal widget that does all the cool rendering shit.
class SPeacegateTerminalWidget;

/**
 * Terminal emulator widget for Peacegate OS.
 */
UCLASS(meta=(DisplayName="Terminal Emulator"))
class PROJECTOGLOWIA_API UPTerminalWidget : public UUserWidget
{
	GENERATED_BODY()

public:
	DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnStdInCharWrittenEvent, const FText&, Character);
	DECLARE_DYNAMIC_MULTICAST_DELEGATE_OneParam(FOnStdInLineWrittenEvent, const FText&, Text);
	DECLARE_DYNAMIC_DELEGATE_RetVal(FSlateFontInfo, FGetSlateFontInfo);

public:
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Fonts and Colors")
	FSlateFontInfo RegularTextFont;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Fonts and Colors")
	FSlateFontInfo BoldTextFont;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Fonts and Colors")
	FSlateFontInfo ItalicTextFont;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Fonts and Colors")
	FSlateFontInfo BoldItalicTextFont;

	/** The time in milliseconds between each cursor blink. */
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Cursor")
	float CursorBlinkTimeMS;

	UPROPERTY()
	FGetSlateFontInfo RegularTextFontDelegate;

	UPROPERTY()
		FGetSlateFontInfo BoldTextFontDelegate;

	UPROPERTY()
		FGetSlateFontInfo ItalicTextFontDelegate;

	UPROPERTY()
		FGetSlateFontInfo BoldItalicTextFontDelegate;


public:
	/** Called when a character is written to the standard input stream. */
	UPROPERTY(BlueprintAssignable, Category="Widget Event", meta=(DisplayName = "On Standard Input Character Written"))
	FOnStdInCharWrittenEvent OnStdInCharWritten;

	/** Called when a line of text is written to the standard input stream. */
	UPROPERTY(BlueprintAssignable, Category = "Widget Event", meta = (DisplayName = "On Standard Input Line Written"))
	FOnStdInLineWrittenEvent OnStdInLineWritten;


	virtual void SynchronizeProperties() override;
	virtual void ReleaseSlateResources(bool bReleaseChildren) override;

#if WITH_EDITOR
	virtual const FText GetPaletteCategory() override;
#endif

protected:
	TSharedPtr<SPeacegateTerminalWidget> MyPeacegateTerminalWidget;

	PROPERTY_BINDING_IMPLEMENTATION(FSlateFontInfo, RegularTextFont);
	PROPERTY_BINDING_IMPLEMENTATION(FSlateFontInfo, BoldTextFont);
	PROPERTY_BINDING_IMPLEMENTATION(FSlateFontInfo, ItalicTextFont);
	PROPERTY_BINDING_IMPLEMENTATION(FSlateFontInfo, BoldItalicTextFont);
};