strawberry-audio-player-windows-mac-linux/src/core/scopedgobject.h

/*
 * Strawberry Music Player
 * This file was part of Clementine.
 * Copyright 2010, David Sansome <me@davidsansome.com>
 *
 * Strawberry is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Strawberry is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef SCOPEDGOBJECT_H
#define SCOPEDGOBJECT_H

#include "config.h"

#include <glib-object.h>

#include <QtDebug>

template <typename T>
class ScopedGObject {
 public:
  ScopedGObject() : object_(nullptr) {}

  ScopedGObject(const ScopedGObject &other) : object_(nullptr) {
    reset(other.object_);
  }

  ~ScopedGObject() { reset(); }

  ScopedGObject &operator=(const ScopedGObject &other) {
    reset(other.object_);
    return *this;
  }

  void reset(T *new_object = nullptr) {
    if (new_object) g_object_ref(new_object);
    reset_without_add(new_object);
  }

  void reset_without_add(T *new_object = nullptr) {
    if (object_) g_object_unref(object_);

    object_ = new_object;
  }

  T *get() const { return object_; }
  operator T*() const { return get(); }
  T *operator*() const { return get(); }
  operator bool() const { return get(); }

  bool operator==(const ScopedGObject &other) const {
    return object_ == other.object_;
  }

 private:
  T *object_;
};

#endif  // SCOPEDGOBJECT_H