qproxymodel.cpp

奇趣公司比较新的qt/emd版本

    The selection of drop actions provided by the model will influence the
    behavior of the component that started the drag and drop operation.

    \sa \link dnd.html Drag and Drop\endlink
*/
Qt::DropActions QProxyModel::supportedDropActions() const
{
    Q_D(const QProxyModel);
    return d->model->supportedDropActions();
}

/*!
    Inserts \a count rows into the model, creating new items as children of
    the given \a parent. The new rows are inserted before the \a row
    specified. If the \a parent item has no children, a single column is
    created to contain the required number of rows.

    Returns true if the rows were successfully inserted; otherwise
    returns false.

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

/*!
    Inserts \a count columns into the model, creating new items as children of
    the given \a parent. The new columns are inserted before the \a column
    specified. If the \a parent item has no children, a single row is created
    to contain the required number of columns.

    Returns true if the columns were successfully inserted; otherwise
    returns false.

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

/*!
    Fetches more child items of the given \a parent. This function is used by views
    to tell the model that they can display more data than the model has provided.

    \sa QAbstractItemModel::fetchMore()
*/
void QProxyModel::fetchMore(const QModelIndex &parent)
{
    Q_D(const QProxyModel);
    d->model->fetchMore(parent);
}

/*!
    Returns the item flags for the given \a index.
*/
Qt::ItemFlags QProxyModel::flags(const QModelIndex &index) const
{
    Q_D(const QProxyModel);
    return d->model->flags(setSourceModel(index));
}

/*!
    Sorts the child items in the specified \a column according to the sort
    order defined by \a order.

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

/*!
    Returns a list of model indexes that each contain the given \a value for
    the \a role specified. The search begins at the \a start index and is
    performed according to the specified \a flags. The search continues until
    the number of matching data items equals \a hits, the last row is reached,
    or the search reaches \a start again, depending on whether \c MatchWrap is
    specified in \a flags.

    \sa QAbstractItemModel::match()
*/
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);
}

/*!
    Returns the size of the item that corresponds to the specified \a index.
*/
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();
}

/*!
    \internal
    Change the model pointer in the given \a source_index to point to the proxy model.
 */
QModelIndex QProxyModel::setProxyModel(const QModelIndex &source_index) const
{
    QModelIndex proxy_index = source_index;
    if (proxy_index.isValid())
        proxy_index.m = this;
    return proxy_index;
}

/*!
    \internal
    Change the model pointer in the given \a proxy_index to point to the source model.
 */
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;
}

/*!
  \internal
  Connect to all the signals emitted by given \a model.
*/
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
}

/*!
  \internal
  Disconnect from all the signals emitted by the given \a model.
 */
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
}

/*!
  \fn QObject *QProxyModel::parent() const
  \internal
*/

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();
}

#include "moc_qproxymodel.cpp"
#endif // QT_NO_PROXYMODEL