/*
  objectenummodel.cpp

  This file is part of GammaRay, the Qt application inspection and
  manipulation tool.

  Copyright (C) 2010-2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
  Author: Volker Krause <volker.krause@kdab.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 2 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 "objectenummodel.h"

#include <QMetaEnum>
#include <QMetaObject>

using namespace GammaRay;

typedef MetaObjectModel<QMetaEnum,
                        &QMetaObject::enumerator,
                        &QMetaObject::enumeratorCount,
                        &QMetaObject::enumeratorOffset> SuperClass;

GammaRay::ObjectEnumModel::ObjectEnumModel(QObject *parent) : SuperClass(parent)
{
}

int ObjectEnumModel::rowCount(const QModelIndex &parent) const
{
  if (!parent.isValid()) {
    return SuperClass::rowCount(parent);
  }
  if (parent.parent().isValid()) {
    return 0;
  }
  const QMetaEnum e = m_metaObject->enumerator(parent.row());
  return e.keyCount();
}

int GammaRay::ObjectEnumModel::columnCount(const QModelIndex &parent) const
{
  Q_UNUSED(parent);
  return 3;
}

QVariant ObjectEnumModel::data(const QModelIndex &index, int role) const
{
  if (!index.parent().isValid()) {
    return SuperClass::data(index, role);
  }

  if (role == Qt::DisplayRole) {
    const QMetaEnum e = m_metaObject->enumerator(index.parent().row());
    if (index.column() == 0) {
      return e.key(index.row());
    }
    if (index.column() == 1) {
      return e.value(index.row());
    }
  }

  return QVariant();
}

QVariant ObjectEnumModel::metaData(const QModelIndex &index,
                               const QMetaEnum &enumerator, int role) const
{
  if (role == Qt::DisplayRole) {
    if (index.column() == 0) {
      return QString::fromLatin1(enumerator.name());
    }
    if (index.column() == 1) {
      return tr("%n element(s)", "", enumerator.keyCount());
    }
  }
  return QVariant();
}

QString ObjectEnumModel::columnHeader(int index) const
{
  switch (index) {
  case 0:
    return tr("Name");
  case 1:
    return tr("Value");
  }
  return QString();
}

QModelIndex GammaRay::ObjectEnumModel::index(int row, int column, const QModelIndex &parent) const
{
  if (!parent.isValid()) {
    return SuperClass::index(row, column, parent);
  }
  return createIndex(row, column, parent.row());
}

QModelIndex GammaRay::ObjectEnumModel::parent(const QModelIndex &child) const
{
  // note: Qt4 doesn't have qintptr
  if (static_cast<qptrdiff>(child.internalId()) == -1) {
    return SuperClass::parent(child);
  }
  return SuperClass::index(child.internalId(), 0, QModelIndex());
}
