/*
 * Copyright 2016 - 2022 Gary Talent (gary@drinkingtea.net). All rights reserved.
 */

#pragma once

#include <ox/event/signal.hpp>

#include "undostack.hpp"
#include "widget.hpp"

#include "nostalgiastudio_export.h"

namespace nostalgia::studio {

class NOSTALGIASTUDIO_EXPORT Editor: public Widget {

	private:
		UndoStack m_cmdStack;
		bool m_unsavedChanges = false;
		bool m_exportable = false;
		bool m_cutEnabled = false;
		bool m_copyEnabled = false;
		bool m_pasteEnabled = false;

	public:
		~Editor() override = default;

		/**
		 * Returns the name of item being edited.
		 */
		[[nodiscard]]
		virtual ox::String itemName() const = 0;

		virtual ox::String itemDisplayName() const;

		virtual void cut();

		virtual void copy();

		virtual void paste();

		virtual void exportFile();

		void close();

		/**
		 * Save changes to item being edited.
		 */
		void save();

		/**
		 * Sets indication of item being edited has unsaved changes. Also emits
		 * unsavedChangesChanged signal.
		 */
		void setUnsavedChanges(bool);

		[[nodiscard]]
		bool unsavedChanges() const noexcept;

		/**
		 * Returns the undo stack holding changes to the item being edited.
		 */
		[[nodiscard]]
		UndoStack *undoStack();

		void setExportable(bool);

		[[nodiscard]]
		bool exportable() const;

		void setCutEnabled(bool);

		[[nodiscard]]
		bool cutEnabled() const;

		void setCopyEnabled(bool);

		[[nodiscard]]
		bool copyEnabled() const;

		void setPasteEnabled(bool);

		[[nodiscard]]
		bool pasteEnabled() const;

	protected:
		/**
		 * Save changes to item being edited.
		 */
		virtual void saveItem();

	// signals
	public:
		ox::Signal<ox::Error(bool)> unsavedChangesChanged;
		ox::Signal<ox::Error(bool)> exportableChanged;
		ox::Signal<ox::Error(bool)> cutEnabledChanged;
		ox::Signal<ox::Error(bool)> copyEnabledChanged;
		ox::Signal<ox::Error(bool)> pasteEnabledChanged;
		ox::Signal<ox::Error(const ox::String&)> closed;

};

}