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/*
* Copyright 2008 Ben Boeckel <MathStuf@gmail.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/>.
*/
// Header include
#include "SigmodTreeModel.h"
// Model includes
#include "models/RootModel.h"
// Sigmod includes
#include "../sigmod/Sigmod.h"
// Qt includes
#include <QtCore/QMimeData>
#include <QtCore/QStringList>
#include <QtCore/QUrl>
#include <QtXml/QDomDocument>
Sigmodr::SigmodTreeModel::SigmodTreeModel(QObject* parent) :
QAbstractItemModel(parent),
m_root(new RootModel)
{
connect(m_root, SIGNAL(rowsChanged(QList<int>)), this, SLOT(rowsChanged(QList<int>)));
}
Sigmodr::SigmodTreeModel::~SigmodTreeModel()
{
delete m_root;
}
QVariant Sigmodr::SigmodTreeModel::data(const QModelIndex& index, int role) const
{
if (!index.isValid())
return QVariant();
BaseModel* object = static_cast<BaseModel*>(index.internalPointer());
return object->data(role);
}
QVariant Sigmodr::SigmodTreeModel::headerData(int section, Qt::Orientation orientation, int role) const
{
Q_UNUSED(section)
Q_UNUSED(orientation)
Q_UNUSED(role)
return QVariant();
}
QModelIndex Sigmodr::SigmodTreeModel::index(int row, int column, const QModelIndex& parent) const
{
if ((row < -1) || (column < -1))
return QModelIndex();
if (row == -1)
return createIndex(row, 0, m_root);
BaseModel* model = getItem(parent);
if ((model->rowCount() <= row) || (1 <= column))
return QModelIndex();
BaseModel* object = model->childItem(row);
return createIndex(row, 0, object);
}
QModelIndex Sigmodr::SigmodTreeModel::parent(const QModelIndex& index) const
{
if (!index.isValid())
return QModelIndex();
BaseModel* parent = static_cast<BaseModel*>(index.internalPointer())->parent();
if (!parent || (parent == m_root))
return QModelIndex();
return createIndex(parent->indexNumber(), 0, parent);
}
int Sigmodr::SigmodTreeModel::rowCount(const QModelIndex& parent) const
{
BaseModel* object = getItem(parent);
return object->rowCount();
}
int Sigmodr::SigmodTreeModel::columnCount(const QModelIndex& parent) const
{
Q_UNUSED(parent)
return 1;
}
Qt::ItemFlags Sigmodr::SigmodTreeModel::flags(const QModelIndex& index) const
{
if (!index.isValid())
return 0;
BaseModel* object = static_cast<BaseModel*>(index.internalPointer());
return object->flags();
}
bool Sigmodr::SigmodTreeModel::setData(const QModelIndex& index, const QVariant& value, int role)
{
if (!index.isValid())
return false;
BaseModel* object = static_cast<BaseModel*>(index.internalPointer());
emit(layoutAboutToBeChanged());
bool success = object->setData(value, role);
emit(layoutChanged());
if (success)
{
emit(dataChanged(index, index));
emit(dirty(findSigmod(index), true));
}
return success;
}
Sigmodr::BaseModel* Sigmodr::SigmodTreeModel::getItem(const QModelIndex& index) const
{
if (index.isValid())
{
BaseModel* object = static_cast<BaseModel*>(index.internalPointer());
if (object)
return object;
}
return m_root;
}
QStringList Sigmodr::SigmodTreeModel::mimeTypes() const
{
return QStringList() << "application/x-sigmod+xml" << "text/uri-list";
}
QMimeData* Sigmodr::SigmodTreeModel::mimeData(const QModelIndexList& indexes) const
{
QMimeData *mimeData = new QMimeData;
if ((indexes.size() == 1) && indexes[0].isValid())
{
QDomDocument xml;
xml.setContent(data(indexes[0], Sigmodr::BaseModel::XmlRole).toString());
mimeData->setData("application/x-sigmod+xml", xml.toByteArray());
}
return mimeData;
}
bool Sigmodr::SigmodTreeModel::dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent)
{
Q_UNUSED(row)
Q_UNUSED(column)
if (action == Qt::IgnoreAction)
return true;
QString format;
bool success = false;
if (data->hasFormat("application/x-sigmod+xml"))
{
QByteArray mimeData = data->data("application/x-sigmod+xml");
emit(layoutAboutToBeChanged());
success = parent.isValid() ? setData(parent, mimeData, Sigmodr::BaseModel::XmlRole) : m_root->setData(mimeData, Sigmodr::BaseModel::XmlRole);
emit(layoutChanged());
}
else if (data->hasFormat("text/uri-list"))
{
QList<QUrl> urls = data->urls();
foreach (const QUrl& url, urls)
{
emit(layoutAboutToBeChanged());
success = parent.isValid() ? setData(parent, url.toEncoded(), Sigmodr::BaseModel::XmlRole) : m_root->setData(url.toEncoded(), Sigmodr::BaseModel::XmlRole);
emit(layoutChanged());
}
}
if (success)
emit(dirty(findSigmod(parent), true));
return success;
}
void Sigmodr::SigmodTreeModel::addSigmod(Sigmod::Sigmod* sigmod)
{
m_root->addSigmod(sigmod);
reset();
}
void Sigmodr::SigmodTreeModel::deleteSigmod(const Sigmod::Sigmod* sigmod)
{
m_root->deleteSigmod(sigmod);
reset();
}
const Sigmod::Sigmod* Sigmodr::SigmodTreeModel::findSigmod(const QModelIndex& index) const
{
QModelIndex curIndex = index;
QModelIndex parIndex = parent(curIndex);
while (parIndex.isValid())
{
curIndex = parIndex;
parIndex = parent(curIndex);
}
return qobject_cast<const Sigmod::Sigmod*>(getItem(curIndex)->object());
}
void Sigmodr::SigmodTreeModel::rowsChanged(const QList<int>& rows)
{
QModelIndex curIndex;
foreach (int row, rows)
curIndex = index(row, 0, curIndex);
if (curIndex.isValid())
{
emit(dataChanged(curIndex, curIndex));
emit(dirty(findSigmod(curIndex), true));
}
else
reset();
}
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