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qsortfilterproxymodelqml.cpp
/*
* Copyright (C) 2012 Canonical Ltd.
*
* 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; version 3.
*
* 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/>.
*/
// self
#include "qsortfilterproxymodelqml.h"
// Qt
#include <QDebug>
QSortFilterProxyModelQML::QSortFilterProxyModelQML(QObject *parent)
: QSortFilterProxyModel(parent)
, m_invertMatch(false)
{
connect(this, SIGNAL(modelReset()), SIGNAL(countChanged()));
connect(this, SIGNAL(rowsInserted(QModelIndex,int,int)), SIGNAL(countChanged()));
connect(this, SIGNAL(rowsRemoved(QModelIndex,int,int)), SIGNAL(countChanged()));
}
/*
* Enter row index of filtered/sorted model, returns row index of source model
*/
int QSortFilterProxyModelQML::mapRowToSource(int row)
{
if (sourceModel() == NULL)
return -1;
return QSortFilterProxyModel::mapToSource(index(row, 0)).row();
}
QHash<int, QByteArray> QSortFilterProxyModelQML::roleNames() const
{
return sourceModel() ? sourceModel()->roleNames() : QHash<int, QByteArray>();
}
void
QSortFilterProxyModelQML::setModel(QAbstractItemModel *itemModel)
{
if (itemModel == NULL) {
return;
}
if (itemModel != sourceModel()) {
if (sourceModel() != NULL) {
sourceModel()->disconnect(this);
}
setSourceModel(itemModel);
connect(itemModel, SIGNAL(modelReset()), SIGNAL(totalCountChanged()));
connect(itemModel, SIGNAL(rowsInserted(QModelIndex,int,int)), SIGNAL(totalCountChanged()));
connect(itemModel, SIGNAL(rowsRemoved(QModelIndex,int,int)), SIGNAL(totalCountChanged()));
Q_EMIT totalCountChanged();
Q_EMIT modelChanged();
}
}
QVariantMap
QSortFilterProxyModelQML::get(int row)
{
QVariantMap res;
const QHash<int, QByteArray> roles = roleNames();
auto it = roles.begin();
for ( ; it != roles.end(); ++it) {
res[*it] = data(row, it.key());
}
return res;
}
QVariant
QSortFilterProxyModelQML::data(int row, int role)
{
if (sourceModel() == NULL) {
return QVariant();
}
return index(row, 0).data(role);
}
int
QSortFilterProxyModelQML::totalCount() const
{
if (sourceModel() != NULL) {
return sourceModel()->rowCount();
} else {
return 0;
}
}
int
QSortFilterProxyModelQML::count()
{
return rowCount();
}
bool
QSortFilterProxyModelQML::invertMatch() const
{
return m_invertMatch;
}
void
QSortFilterProxyModelQML::setInvertMatch(bool invertMatch)
{
if (invertMatch != m_invertMatch) {
m_invertMatch = invertMatch;
Q_EMIT invertMatchChanged(invertMatch);
invalidateFilter();
}
}
bool
QSortFilterProxyModelQML::filterAcceptsRow(int sourceRow,
const QModelIndex &sourceParent) const
{
// If there's no regexp set, always accept all rows indepenently of the invertMatch setting
if (filterRegExp().isEmpty()) {
return true;
}
bool result = QSortFilterProxyModel::filterAcceptsRow(sourceRow, sourceParent);
return (m_invertMatch) ? !result : result;
}
int
QSortFilterProxyModelQML::findFirst(int role, const QVariant& value) const
{
QModelIndexList matches = match(index(0, 0), role, value, 1, Qt::MatchExactly);
if (!matches.isEmpty()) {
return matches.first().row();
} else {
return -1;
}
}
int
QSortFilterProxyModelQML::mapFromSource(int row)
{
if (sourceModel() != NULL) {
return QSortFilterProxyModel::mapFromSource(sourceModel()->index(row, 0)).row();
} else {
return -1;
}
}
int
QSortFilterProxyModelQML::mapToSource(int row)
{
if (sourceModel() != NULL) {
return QSortFilterProxyModel::mapToSource(index(row, 0)).row();
} else {
return -1;
}
}