qproxymodel.cpp

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#include "qproxymodel.h"

#ifndef QT_NO_PROXYMODEL
#include <private/qproxymodel_p.h>
#include <qsize.h>
#include <qstringlist.h>

QT_BEGIN_NAMESPACE

QProxyModel::QProxyModel(QObject *parent)
    : QAbstractItemModel(*new QProxyModelPrivate, parent)
{
    Q_D(QProxyModel);
    setModel(&d->empty);
}

QProxyModel::QProxyModel(QProxyModelPrivate &dd, QObject *parent)
    : QAbstractItemModel(dd, parent)
{
    Q_D(QProxyModel);
    setModel(&d->empty);
}

QProxyModel::~QProxyModel()
{
}

void QProxyModel::setModel(QAbstractItemModel *model)
{
    Q_D(QProxyModel);
    if (d->model && d->model != &d->empty)
        disconnectFromModel(d->model);
    if (model) {
        d->model = model;
        connectToModel(model);
    } else {
        d->model = &d->empty;
    }
}

QAbstractItemModel *QProxyModel::model() const
{
    Q_D(const QProxyModel);
    return d->model;
}

QModelIndex QProxyModel::index(int row, int column, const QModelIndex &parent) const
{
    Q_D(const QProxyModel);
    return setProxyModel(d->model->index(row, column, setSourceModel(parent)));
}

QModelIndex QProxyModel::parent(const QModelIndex &child) const
{
    Q_D(const QProxyModel);
    return setProxyModel(d->model->parent(setSourceModel(child)));
}

int QProxyModel::rowCount(const QModelIndex &parent) const
{
    Q_D(const QProxyModel);
    return d->model->rowCount(setSourceModel(parent));
}

int QProxyModel::columnCount(const QModelIndex &parent) const
{
    Q_D(const QProxyModel);
    return d->model->columnCount(setSourceModel(parent));
}

bool QProxyModel::hasChildren(const QModelIndex &parent) const
{
    Q_D(const QProxyModel);
    return d->model->hasChildren(setSourceModel(parent));
}

QVariant QProxyModel::data(const QModelIndex &index, int role) const
{
    Q_D(const QProxyModel);
    return d->model->data(setSourceModel(index), role);
}

bool QProxyModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
    Q_D(const QProxyModel);
    return d->model->setData(setSourceModel(index), value, role);
}

QVariant QProxyModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    Q_D(const QProxyModel);
    return d->model->headerData(section, orientation, role);
}

bool QProxyModel::setHeaderData(int section, Qt::Orientation orientation,
                                const QVariant &value, int role)
{
    Q_D(const QProxyModel);
    return d->model->setHeaderData(section, orientation, value, role);
}

QStringList QProxyModel::mimeTypes() const
{
    Q_D(const QProxyModel);
    return d->model->mimeTypes();
}

QMimeData *QProxyModel::mimeData(const QModelIndexList &indexes) const
{
    Q_D(const QProxyModel);
    QModelIndexList lst;
    for (int i = 0; i < indexes.count(); ++i)
        lst.append(setSourceModel(indexes.at(i)));
    return d->model->mimeData(lst);
}

bool QProxyModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
                               int row, int column, const QModelIndex &parent)
{
    Q_D(const QProxyModel);
    return d->model->dropMimeData(data, action, row, column, setSourceModel(parent));
}

Qt::DropActions QProxyModel::supportedDropActions() const
{
    Q_D(const QProxyModel);
    return d->model->supportedDropActions();
}

bool QProxyModel::insertRows(int row, int count, const QModelIndex &parent)
{
    Q_D(const QProxyModel);
    return d->model->insertRows(row, count, setSourceModel(parent));
}

bool QProxyModel::insertColumns(int column, int count, const QModelIndex &parent)
{
    Q_D(const QProxyModel);
    return d->model->insertColumns(column, count, setSourceModel(parent));
}

void QProxyModel::fetchMore(const QModelIndex &parent)
{
    Q_D(const QProxyModel);
    d->model->fetchMore(parent);
}

Qt::ItemFlags QProxyModel::flags(const QModelIndex &index) const
{
    Q_D(const QProxyModel);
    return d->model->flags(setSourceModel(index));
}

void QProxyModel::sort(int column, Qt::SortOrder order)
{
    Q_D(QProxyModel);
    d->model->sort(column, order);
}

QModelIndexList QProxyModel::match(const QModelIndex &start,
                                   int role, const QVariant &value,
                                   int hits, Qt::MatchFlags flags) const
{
    Q_D(const QProxyModel);
    return d->model->match(start, role, value, hits, flags);
}

QSize QProxyModel::span(const QModelIndex &index) const
{
    Q_D(const QProxyModel);
    return d->model->span(setSourceModel(index));
}

bool QProxyModel::submit()
{
    Q_D(QProxyModel);
    return d->model->submit();
}

void QProxyModel::revert()
{
    Q_D(QProxyModel);
    d->model->revert();
}

QModelIndex QProxyModel::setProxyModel(const QModelIndex &source_index) const
{
    QModelIndex proxy_index = source_index;
    if (proxy_index.isValid())
        proxy_index.m = this;
    return proxy_index;
}

QModelIndex QProxyModel::setSourceModel(const QModelIndex &proxy_index) const
{
    Q_D(const QProxyModel);
    QModelIndex source_index = proxy_index;
    source_index.m = d->model;
    return source_index;
}

void QProxyModel::connectToModel(const QAbstractItemModel *model) const
{
    connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
            this, SLOT(_q_sourceDataChanged(QModelIndex,QModelIndex)));
    connect(model, SIGNAL(headerDataChanged(Qt::Orientation,int,int)),
            this, SIGNAL(headerDataChanged(Qt::Orientation,int,int))); // signal to signal
    connect(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
            this, SLOT(_q_sourceRowsAboutToBeInserted(QModelIndex,int,int)));
    connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
            this, SLOT(_q_sourceRowsInserted(QModelIndex,int,int)));
    connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
            this, SLOT(_q_sourceRowsAboutToBeRemoved(QModelIndex,int,int)));
    connect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
            this, SLOT(_q_sourceRowsRemoved(QModelIndex,int,int)));
    connect(model, SIGNAL(columnsAboutToBeInserted(QModelIndex,int,int)),
            this, SLOT(_q_sourceColumnsAboutToBeInserted(QModelIndex,int,int)));
    connect(model, SIGNAL(columnsInserted(QModelIndex,int,int)),
            this, SLOT(_q_sourceColumnsInserted(QModelIndex,int,int)));
    connect(model, SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)),
            this, SLOT(_q_sourceColumnsAboutToBeRemoved(QModelIndex,int,int)));
    connect(model, SIGNAL(columnsRemoved(QModelIndex,int,int)),
            this, SLOT(_q_sourceColumnsRemoved(QModelIndex,int,int)));
    connect(model, SIGNAL(modelReset()), this, SIGNAL(modelReset())); // signal to signal
    connect(model, SIGNAL(layoutAboutToBeChanged()), this, SIGNAL(layoutAboutToBeChanged())); // signal to signal
    connect(model, SIGNAL(layoutChanged()), this, SIGNAL(layoutChanged())); // signal to signal
}

void QProxyModel::disconnectFromModel(const QAbstractItemModel *model) const
{
    disconnect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
               this, SLOT(_q_sourceDataChanged(QModelIndex,QModelIndex)));
    disconnect(model, SIGNAL(headerDataChanged(Qt::Orientation,int,int)),
               this, SIGNAL(headerDataChanged(Qt::Orientation,int,int))); // signal to signal
    disconnect(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)),
               this, SLOT(_q_sourceRowsAboutToBeInserted(QModelIndex,int,int)));
    disconnect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
               this, SLOT(rowsInserted(QModelIndex,int,int)));
    disconnect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
               this, SLOT(_q_sourceRowsAboutToBeRemoved(QModelIndex,int,int)));
    disconnect(model, SIGNAL(rowsRemoved(QModelIndex,int,int)),
               this, SLOT(_q_sourceRowsRemoved(QModelIndex,int,int)));
    disconnect(model, SIGNAL(columnsAboutToBeInserted(QModelIndex,int,int)),
               this, SLOT(_q_sourceColumnsAboutToBeInserted(QModelIndex,int,int)));
    disconnect(model, SIGNAL(columnsInserted(QModelIndex,int,int)),
               this, SLOT(_q_sourceColumnsInserted(QModelIndex,int,int)));
    disconnect(model, SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)),
               this, SLOT(_q_sourceColumnsAboutToBeRemoved(QModelIndex,int,int)));
    disconnect(model, SIGNAL(columnsRemoved(QModelIndex,int,int)),
               this, SLOT(_q_sourceColumnsRemoved(QModelIndex,int,int)));
    disconnect(model, SIGNAL(modelReset()), this, SIGNAL(modelReset())); // signal to signal
    disconnect(model, SIGNAL(layoutAboutToBeChanged()), this, SIGNAL(layoutAboutToBeChanged())); // signal to signal
    disconnect(model, SIGNAL(layoutChanged()), this, SIGNAL(layoutChanged())); // signal to signal
}

void QProxyModelPrivate::_q_sourceDataChanged(const QModelIndex &tl,const QModelIndex &br)
{
    Q_Q(QProxyModel);
    emit q->dataChanged(q->setProxyModel(tl), q->setProxyModel(br));
}

void QProxyModelPrivate::_q_sourceRowsAboutToBeInserted(const QModelIndex &parent, int first ,int last)
{
    Q_Q(QProxyModel);
    q->beginInsertRows(q->setProxyModel(parent), first, last);
}

void QProxyModelPrivate::_q_sourceRowsInserted(const QModelIndex &, int, int)
{
    Q_Q(QProxyModel);
    q->endInsertRows();
}

void QProxyModelPrivate::_q_sourceRowsAboutToBeRemoved(const QModelIndex &parent, int first, int last)
{
    Q_Q(QProxyModel);
    q->beginRemoveRows(q->setProxyModel(parent), first, last);
}

void QProxyModelPrivate::_q_sourceRowsRemoved(const QModelIndex &, int, int)
{
    Q_Q(QProxyModel);
    q->endRemoveRows();
}

void QProxyModelPrivate::_q_sourceColumnsAboutToBeInserted(const QModelIndex &parent, int first, int last)
{
    Q_Q(QProxyModel);
    q->beginInsertColumns(q->setProxyModel(parent), first, last);
}

void QProxyModelPrivate::_q_sourceColumnsInserted(const QModelIndex &, int, int)
{
    Q_Q(QProxyModel);
    q->endInsertColumns();
}

void QProxyModelPrivate::_q_sourceColumnsAboutToBeRemoved(const QModelIndex &parent, int first, int last)
{
    Q_Q(QProxyModel);
    q->beginRemoveColumns(q->setProxyModel(parent), first, last);
}


void QProxyModelPrivate::_q_sourceColumnsRemoved(const QModelIndex &, int, int)
{
    Q_Q(QProxyModel);
    q->endRemoveColumns();
}

QT_END_NAMESPACE

#include "moc_qproxymodel.cpp"

#endif // QT_NO_PROXYMODEL