/*
 * Element.cpp
 *
 * (c) 2016 Sofian Audry -- info(@)sofianaudry(.)com
 *
 * 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/>.
 */

#include "Element.h"

#include <QDebug>

MM_BEGIN_NAMESPACE

Element::Element(uid id, UidAllocator* allocator) : _name(""), _isLocked(false), _opacity(1.0f), _allocator(allocator)
{
  if (id == NULL_UID)
    id = allocator->allocate();
  else
  {
    Q_ASSERT(!allocator->exists(id));
    allocator->reserve(id);
  }
  // Assign id.
  _id = id;
}

Element::~Element() {
  _allocator->free(_id);
}

void Element::setName(const QString& name)
{
  if (name != _name)
  {
    _name = name;
    _emitPropertyChanged("name");
  }
}

void Element::setLocked(bool locked)
{
  if (locked != _isLocked)
  {
    _isLocked = locked;
    _emitPropertyChanged("locked");
  }
}

void Element::setOpacity(float opacity)
{
  opacity = qBound(opacity, 0.0f, 1.0f);
  if (opacity != _opacity)
  {
    _opacity = opacity;
    _emitPropertyChanged("opacity");
  }
}

void Element::read(const QDomElement& obj)
{
  Serializable::read(obj);

  // Check id.
  Q_ASSERT(_id == obj.attribute("id").toInt());
}

void Element::write(QDomElement& obj)
{
  Serializable::write(obj);
  // Set id.
  obj.setAttribute("id", getId());
}

void Element::_emitPropertyChanged(const QString& propertyName)
{
  emit propertyChanged(getId(), propertyName, property(propertyName.toAscii()));
}

MM_END_NAMESPACE