pqLinkedObjectInterface.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
// SPDX-License-Identifier: BSD-3-Clause

#ifndef pqLinkedObjectInterface_h
#define pqLinkedObjectInterface_h

#include <pqCoreModule.h>

#include <QMetaObject>
#include <QString>

#include <memory>

struct PQCORE_EXPORT pqLinkedObjectInterface
{
  pqLinkedObjectInterface() = default;

  explicit pqLinkedObjectInterface(const pqLinkedObjectInterface&) = default;

  virtual ~pqLinkedObjectInterface() noexcept = default;

  virtual std::unique_ptr<pqLinkedObjectInterface> clone() const = 0;

  virtual void link(pqLinkedObjectInterface* other) = 0;

  virtual void unlink() = 0;

  enum class QtSignalState : bool
  {
    On = true,
    Off = false
  };

  virtual void setText(const QString& txt) = 0;

  virtual QString getText() const = 0;

  virtual QObject* getLinked() const noexcept = 0;

  virtual QString getName() const = 0;

  bool isLinked() const noexcept { return this->ConnectedTo != nullptr; }

protected:
  pqLinkedObjectInterface* ConnectedTo = nullptr;
  QMetaObject::Connection Connection;
  bool SettingText = false;
};

#endif // pqLinkedObjectInterface_h