workspacesettingsitem_genericvalue.h

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/*
 * LibrePCB - Professional EDA for everyone!
 * Copyright (C) 2013 LibrePCB Developers, see AUTHORS.md for contributors.
 * https://librepcb.org/
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef LIBREPCB_CORE_WORKSPACESETTINGSITEM_GENERICVALUE_H
#define LIBREPCB_CORE_WORKSPACESETTINGSITEM_GENERICVALUE_H
 
/*******************************************************************************
 *  Includes
 ******************************************************************************/
#include "workspacesettingsitem.h"
 
#include <QtCore>
 
/*******************************************************************************
 *  Namespace / Forward Declarations
 ******************************************************************************/
namespace librepcb {
 
/*******************************************************************************
 *  Class WorkspaceSettingsItem_GenericValue
 ******************************************************************************/
 
template <typename T>
class WorkspaceSettingsItem_GenericValue final : public WorkspaceSettingsItem {
public:
  // Constructors / Destructor
  WorkspaceSettingsItem_GenericValue() = delete;
  WorkspaceSettingsItem_GenericValue(
      const WorkspaceSettingsItem_GenericValue& other) = delete;
  explicit WorkspaceSettingsItem_GenericValue(
      const QString& key, const T& defaultValue,
      QObject* parent = nullptr) noexcept
    : WorkspaceSettingsItem(key, parent),
      mDefaultValue(defaultValue),
      mCurrentValue(defaultValue) {}
  ~WorkspaceSettingsItem_GenericValue() noexcept {}
 
  const T& get() const noexcept { return mCurrentValue; }
 
  void set(const T& value) noexcept {
    if (value != mCurrentValue) {
      mCurrentValue = value;
      valueModified();
    }
  }
 
  const T& getDefault() const noexcept { return mDefaultValue; }
 
  // Operator Overloadings
  WorkspaceSettingsItem_GenericValue& operator=(
      const WorkspaceSettingsItem_GenericValue& rhs) = delete;
 
private:  // Methods
  virtual void restoreDefaultImpl() noexcept override { set(mDefaultValue); }
 
  void loadImpl(const SExpression& root) override {
    set(deserialize<T>(root.getChild("@0")));  // can throw
  }
 
  void serializeImpl(SExpression& root) const override {
    root.appendChild(mCurrentValue);
  }
 
private:
  T mDefaultValue;  
  T mCurrentValue;  
};
 
/*******************************************************************************
 *  End of File
 ******************************************************************************/
 
}  // namespace librepcb
 
#endif