File indexing completed on 2024-05-12 04:35:04

 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2015-2016 Dominik Haumann <dhaumann@kde.org>
  *
  * This library is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as published
  * by the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This library 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 Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
 
 #include "Property.h"
 #include "PropertyInterface.h"
 
 #include <QJsonObject>
 
 namespace tikz {
 namespace core {
 
 class PropertyPrivate
 {
 public:
     Property * property = nullptr;
     QString title;
     QString propertyName;
     PropertyInterface * propertyInterface = nullptr;
     bool propertySet = false;
 
     //! change refcounter
     int changeRefCounter = 0;
 
 public: // change management
     //! Starts a change transaction.
     void beginChange()
     {
         ++changeRefCounter;
 
         if (changeRefCounter == 1 && propertyInterface) {
             propertyInterface->notifyPropertyAboutToChange(property);
         }
     }
 
     //! Ends a change transaction.
     void endChange()
     {
         --changeRefCounter;
         if (changeRefCounter == 0 && propertyInterface) {
             propertyInterface->notifyPropertyChanged(property);
         }
     }
 
     friend class Property::Transaction;
 };
 
 Property::Transaction::Transaction(Property * prop)
     : m_property(prop)
 {
     if (m_property) {
         m_property->d->beginChange();
     }
 }
 
 void Property::Transaction::endChange()
 {
     if (m_property) {
         m_property->d->endChange();
         m_property = nullptr;
     }
 }
 
 Property::Transaction::~Transaction()
 {
     endChange();
 }
 
 Property::Property(const QString & propertyName, PropertyInterface * interface)
     : d(new PropertyPrivate())
 {
     d->property = this;
     d->propertyName = propertyName;
     d->propertyInterface = interface;
 }
 
 Property::~Property()
 {
     delete d;
 }
 
 PropertyInterface * Property::propertyInterface() const
 {
     return d->propertyInterface;
 }
 
 Property * Property::parentProperty() const
 {
     if (d->propertyInterface) {
         auto iface = d->propertyInterface->parentPropertyInterface();
         if (iface) {
             auto prop = iface->property(propertyName());
             if (prop) {
                 // hierarchical properties must always have the same type.
                 Q_ASSERT(propertyType() == prop->propertyType());
             }
             return prop;
         }
     }
     return nullptr;
 }
 
 Entity * Property::entity() const
 {
     return d->propertyInterface ? d->propertyInterface->entity() : nullptr;
 }
 
 QString Property::propertyName() const
 {
     return d->propertyName;
 }
 
 void Property::setTitle(const QString & title)
 {
     if (d->title!= title) {
         Transaction trans(this);
         d->title = title;
     }
 }
 
 QString Property::title() const
 {
     return d->title;
 }
 
 void Property::unset()
 {
     if (d->propertySet) {
         Transaction trans(this);
         d->propertySet = false;
     }
 }
 
 bool Property::isSet() const
 {
     return d->propertySet;
 }
 
 void Property::load(const QJsonObject & json)
 {
     // load meta data
     d->propertyName = json["name"].toString(d->propertyName);
     d->title = json["title"].toString(d->title);
 
     // load payload
     loadData(json["data"].toObject());
 }
 
 void Property::loadData(const QJsonObject & json)
 {
     Q_UNUSED(json)
 }
 
 void Property::save(QJsonObject & json)
 {
     // save meta data
     json["name"] = propertyName();
     json["title"] = d->title;
     json["type"] = propertyType();
 
     // save payload
     QJsonObject joData;
     saveData(joData);
     json["data"] = joData;
 }
 
 void Property::saveData(QJsonObject & json)
 {
     Q_UNUSED(json)
 }
 
 }
 }
 
 // kate: indent-width 4; replace-tabs on;