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/*
Copyright (c) 2009 Stephen Kelly <steveire@gmail.com>
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, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#include "dynamictreemodel.h"
#include <QHash>
#include <QList>
#include <QTimer>
#include <QDebug>
#include <kdebug.h>
DynamicTreeModel::DynamicTreeModel(QObject *parent)
: QAbstractItemModel(parent),
nextId(1)
{
}
QModelIndex DynamicTreeModel::index(int row, int column, const QModelIndex &parent) const
{
// if (column != 0)
// return QModelIndex();
if ( column < 0 || row < 0 )
return QModelIndex();
QList<QList<qint64> > childIdColumns = m_childItems.value(parent.internalId());
if (childIdColumns.size() == 0)
return QModelIndex();
if (column >= childIdColumns.size())
return QModelIndex();
QList<qint64> rowIds = childIdColumns.at(column);
if ( row >= rowIds.size())
return QModelIndex();
qint64 id = rowIds.at(row);
return createIndex(row, column, reinterpret_cast<void *>(id));
}
qint64 DynamicTreeModel::findParentId(qint64 searchId) const
{
if (searchId <= 0)
return -1;
QHashIterator<qint64, QList<QList<qint64> > > i(m_childItems);
while (i.hasNext())
{
i.next();
QListIterator<QList<qint64> > j(i.value());
while (j.hasNext())
{
QList<qint64> l = j.next();
if (l.contains(searchId))
{
return i.key();
}
}
}
return -1;
}
QModelIndex DynamicTreeModel::parent(const QModelIndex &index) const
{
if (!index.isValid())
return QModelIndex();
qint64 searchId = index.internalId();
qint64 parentId = findParentId(searchId);
// Will never happen for valid index, but what the hey...
if (parentId <= 0)
return QModelIndex();
qint64 grandParentId = findParentId(parentId);
if (grandParentId < 0)
grandParentId = 0;
int column = 0;
QList<qint64> childList = m_childItems.value(grandParentId).at(column);
int row = childList.indexOf(parentId);
return createIndex(row, column, reinterpret_cast<void *>(parentId));
}
int DynamicTreeModel::rowCount(const QModelIndex &index ) const
{
QList<QList<qint64> > cols = m_childItems.value(index.internalId());
if (cols.size() == 0 )
return 0;
if (index.column() > 0)
return 0;
return cols.at(0).size();
}
int DynamicTreeModel::columnCount(const QModelIndex &index ) const
{
// Q_UNUSED(index);
return m_childItems.value(index.internalId()).size();
}
QVariant DynamicTreeModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (Qt::DisplayRole == role)
{
return m_items.value(index.internalId());
}
return QVariant();
}
void DynamicTreeModel::clear()
{
m_items.clear();
m_childItems.clear();
nextId = 1;
reset();
}
ModelChangeCommand::ModelChangeCommand( DynamicTreeModel *model, QObject *parent )
: QObject(parent), m_model(model), m_numCols(1), m_startRow(-1), m_endRow(-1)
{
}
QModelIndex ModelChangeCommand::findIndex(QList<int> rows)
{
const int col = 0;
QModelIndex parent = QModelIndex();
QListIterator<int> i(rows);
while (i.hasNext())
{
parent = m_model->index(i.next(), col, parent);
Q_ASSERT(parent.isValid());
}
return parent;
}
ModelInsertCommand::ModelInsertCommand(DynamicTreeModel *model, QObject *parent )
: ModelChangeCommand(model, parent)
{
}
void ModelInsertCommand::doCommand()
{
QModelIndex parent = findIndex(m_rowNumbers);
m_model->beginInsertRows(parent, m_startRow, m_endRow);
qint64 parentId = parent.internalId();
for (int row = m_startRow; row <= m_endRow; row++)
{
for(int col = 0; col < m_numCols; col++ )
{
if (m_model->m_childItems[parentId].size() <= col)
{
m_model->m_childItems[parentId].append(QList<qint64>());
}
// QString name = QUuid::createUuid().toString();
qint64 id = m_model->newId();
QString name = QString::number(id);
m_model->m_items.insert(id, name);
m_model->m_childItems[parentId][col].insert(row, id);
}
}
m_model->endInsertRows();
}
ModelMoveCommand::ModelMoveCommand(DynamicTreeModel *model, QObject *parent)
: ModelChangeCommand(model, parent)
{
}
void ModelMoveCommand::doCommand()
{
QModelIndex srcParent = findIndex(m_rowNumbers);
QModelIndex destParent = findIndex(m_destRowNumbers);
if (!m_model->beginMoveRows(srcParent, m_startRow, m_endRow, destParent, m_destRow))
{
return;
}
for (int column = 0; column < m_numCols; ++column)
{
QList<qint64> l = m_model->m_childItems.value(srcParent.internalId())[column].mid(m_startRow, m_endRow - m_startRow + 1 );
for (int i = m_startRow; i <= m_endRow ; i++)
{
m_model->m_childItems[srcParent.internalId()][column].removeAt(m_startRow);
}
int d;
if (m_destRow < m_startRow)
d = m_destRow;
else
{
if (srcParent == destParent)
d = m_destRow - (m_endRow - m_startRow + 1);
else
d = m_destRow - (m_endRow - m_startRow) + 1;
}
foreach(const qint64 id, l)
{
m_model->m_childItems[destParent.internalId()][column].insert(d++, id);
}
}
m_model->endMoveRows();
}
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