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ox/src/nostalgia/studio/lib/editor.hpp
T

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/*
* 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 {
class StudioUI;
}
namespace nostalgia::studio {
class NOSTALGIASTUDIO_EXPORT BaseEditor: public Widget {
friend StudioUI;
private:
bool m_unsavedChanges = false;
bool m_exportable = false;
bool m_cutEnabled = false;
bool m_copyEnabled = false;
bool m_pasteEnabled = false;
public:
~BaseEditor() override = default;
/**
* Returns the name of item being edited.
*/
[[nodiscard]]
virtual const ox::String &itemName() const noexcept = 0;
[[nodiscard]]
virtual const ox::String &itemDisplayName() const noexcept;
virtual void cut();
virtual void copy();
virtual void paste();
virtual void exportFile();
virtual void keyStateChanged(core::Key key, bool down);
void close();
/**
* Save changes to item being edited.
*/
void save() noexcept;
/**
* Sets indication of item being edited has unsaved changes. Also emits
* unsavedChangesChanged signal.
*/
void setUnsavedChanges(bool);
[[nodiscard]]
bool unsavedChanges() const noexcept;
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 ox::Error saveItem() noexcept;
/**
* Returns the undo stack holding changes to the item being edited.
*/
[[nodiscard]]
virtual UndoStack *undoStack() noexcept {
return nullptr;
}
// 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;
};
class Editor: public studio::BaseEditor {
private:
studio::UndoStack m_undoStack;
public:
Editor() noexcept;
UndoStack *undoStack() noexcept final {
return &m_undoStack;
}
private:
ox::Error markUnsavedChanges(int) noexcept;
};
}