QAbstractItemModel Class Reference

#include <qabstractitemmodel.h>

Inheritance diagram for QAbstractItemModel:

[legend]Collaboration diagram for QAbstractItemModel:

[legend]List of all members.

---

Detailed Description

The QAbstractItemModel class provides the abstract interface for item model classes.

The QAbstractItemModel class defines the standard interface that item models must use to be able to interoperate with other components in the model/view architecture. It is not supposed to be instantiated directly. Instead, you should subclass it to create new models.

The QAbstractItemModel class is one of the {Model/View Classes} and is part of Qt's {Model/View Programming}{model/view framework}.

If you need a model to use with a QListView or a QTableView, you should consider subclassing QAbstractListModel or QAbstractTableModel instead of this class.

The underlying data model is exposed to views and delegates as a hierarchy of tables. If you don't make use of the hierarchy, then the model is a simple table of rows and columns. Each item has a unique index specified by a QModelIndex.

modelindex-no-parent.png

Every item of data that can be accessed via a model has an associated model index that is obtained using the index() function. Each index may have a sibling() index; child items have a parent() index.

Each item has a number of data elements associated with it, and each of these can be retrieved by specifying a role (see Qt::ItemDataRole) to the model's data() function. Data for all available roles can be obtained at the same time using the itemData() function.

Data for each role is set using a particular Qt::ItemDataRole. Data for individual roles are set individually with setData(), or they can be set for all roles with setItemData().

Items can be queried with flags() (see Qt::ItemFlag) to see if they can be selected, dragged, or manipulated in other ways.

If an item has child objects, hasChildren() returns true for the corresponding index.

The model has a rowCount() and a columnCount() for each level of the hierarchy. Rows and columns can be inserted and removed with insertRows(), insertColumns(), removeRows(), and removeColumns().

The model emits signals to indicate changes. For example, dataChanged() is emitted whenever items of data made available by the model are changed. Changes to the headers supplied by the model cause headerDataChanged() to be emitted. If the structure of the underlying data changes, the model can emit layoutChanged() to indicate to any attached views that they should redisplay any items shown, taking the new structure into account.

The items available through the model can be searched for particular data using the match() function.

If the model is sortable, it can be sorted with sort().

\bold{Note:} Some general guidelines for subclassing models are available in the \l{Model Subclassing Reference}. When subclassing QAbstractItemModel, at the very least you must implement index(), parent(), rowCount(), columnCount(), and data(). These functions are used in all read-only models, and form the basis of editable models. You can also reimplement hasChildren() to provide special behavior for models where the implementation of rowCount() is expensive. This makes it possible for models to restrict the amount of data requested by views, and can be used as a way to implement lazy population of model data. To enable editing in your model, you must also implement setData(), and reimplement flags() to ensure that \c ItemIsEditable is returned. You can also reimplement headerData() and setHeaderData() to control the way the headers for your model are presented. Note that the dataChanged() and headerDataChanged() signals must be emitted explicitly when reimplementing the setData() and setHeaderData() functions, respectively. Custom models need to create model indexes for other components to use. To do this, call createIndex() with suitable row and column numbers for the item, and supply a unique identifier for the item, either as a pointer or as an integer value. Custom models typically use these unique identifiers in other reimplemented functions to retrieve item data and access information about the item's parents and children. See the \l{itemviews/simpletreemodel}{Simple Tree Model} example for more information about unique identifiers. It is not necessary to support every role defined in Qt::ItemDataRole. Depending on the type of data contained within a model, it may only be useful to implement the data() function to return valid information for some of the more common roles. Most models provide at least a textual representation of item data for the Qt::DisplayRole, and well-behaved models should also provide valid information for the Qt::ToolTipRole and Qt::WhatsThisRole. Supporting these roles enables models to be used with standard Qt views. However, for some models that handle highly-specialized data, it may be appropriate to provide data only for user-defined roles. Models that provide interfaces to resizable data structures can provide implementations of insertRows(), removeRows(), insertColumns(), and removeColumns(). When implementing these functions, it is important to notify any connected views about changes to the model's dimensions both \e before and \e after they occur: \list \o An insertRows() implementation must call beginInsertRows() \e before inserting new rows into the data structure, and it must call endInsertRows() \e{immediately afterwards}. \o An insertColumns() implementation must call beginInsertColumns() \e before inserting new columns into the data structure, and it must call endInsertColumns() \e{immediately afterwards}. \o A removeRows() implementation must call beginRemoveRows() \e before the rows are removed from the data structure, and it must call endRemoveRows() \e{immediately afterwards}. \o A removeColumns() implementation must call beginRemoveColumns() \e before the columns are removed from the data structure, and it must call endRemoveColumns() \e{immediately afterwards}. \endlist The \e private signals that these functions emit give attached components the chance to take action before any data becomes unavailable. The encapsulation of the insert and remove operations with these begin and end functions also enables the model to manage \l{QPersistentModelIndex}{persistent model indexes} correctly. \bold{If you want selections to be handled properly, you must ensure that you call these functions.} \sa {Model/View Programming}, QModelIndex, QAbstractItemView, {Using Drag and Drop with Item Views}, {Simple DOM Model Example}, {Simple Tree Model Example} Definition at line 127 of file qabstractitemmodel.h.

Public Slots
virtual bool	submit ()
virtual void	revert ()
Signals
void	dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight)
void	headerDataChanged (Qt::Orientation orientation, int first, int last)
void	layoutChanged ()
void	layoutAboutToBeChanged ()
Public Member Functions
	QAbstractItemModel (QObject *parent=0)
virtual	~QAbstractItemModel ()
bool	hasIndex (int row, int column, const QModelIndex &parent=QModelIndex()) const
virtual QModelIndex	index (int row, int column, const QModelIndex &parent=QModelIndex()) const=0
virtual QModelIndex	parent (const QModelIndex &child) const=0
QModelIndex	sibling (int row, int column, const QModelIndex &idx) const
virtual int	rowCount (const QModelIndex &parent=QModelIndex()) const=0
virtual int	columnCount (const QModelIndex &parent=QModelIndex()) const=0
virtual bool	hasChildren (const QModelIndex &parent=QModelIndex()) const
virtual QVariant	data (const QModelIndex &index, int role=Qt::DisplayRole) const =0
virtual bool	setData (const QModelIndex &index, const QVariant &value, int role=Qt::EditRole)
virtual QVariant	headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const
virtual bool	setHeaderData (int section, Qt::Orientation orientation, const QVariant &value, int role=Qt::EditRole)
virtual QMap< int, QVariant >	itemData (const QModelIndex &index) const
virtual bool	setItemData (const QModelIndex &index, const QMap< int, QVariant > &roles)
virtual QStringList	mimeTypes () const
virtual QMimeData *	mimeData (const QModelIndexList &indexes) const
virtual bool	dropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent)
virtual Qt::DropActions	supportedDropActions () const
Qt::DropActions	supportedDragActions () const
void	setSupportedDragActions (Qt::DropActions)
virtual bool	insertRows (int row, int count, const QModelIndex &parent=QModelIndex())
virtual bool	insertColumns (int column, int count, const QModelIndex &parent=QModelIndex())
virtual bool	removeRows (int row, int count, const QModelIndex &parent=QModelIndex())
virtual bool	removeColumns (int column, int count, const QModelIndex &parent=QModelIndex())
bool	insertRow (int row, const QModelIndex &parent=QModelIndex())
bool	insertColumn (int column, const QModelIndex &parent=QModelIndex())
bool	removeRow (int row, const QModelIndex &parent=QModelIndex())
bool	removeColumn (int column, const QModelIndex &parent=QModelIndex())
virtual void	fetchMore (const QModelIndex &parent)
virtual bool	canFetchMore (const QModelIndex &parent) const
virtual Qt::ItemFlags	flags (const QModelIndex &index) const
virtual void	sort (int column, Qt::SortOrder order=Qt::AscendingOrder)
virtual QModelIndex	buddy (const QModelIndex &index) const
virtual QModelIndexList	match (const QModelIndex &start, int role, const QVariant &value, int hits=1, Qt::MatchFlags flags=Qt::MatchFlags(Qt::MatchStartsWith|Qt::MatchWrap)) const
virtual QSize	span (const QModelIndex &index) const
Protected Member Functions
	QAbstractItemModel (QAbstractItemModelPrivate &dd, QObject *parent=0)
QModelIndex	createIndex (int row, int column, void *data=0) const
QModelIndex	createIndex (int row, int column, int id) const
QModelIndex	createIndex (int row, int column, quint32 id) const
void	encodeData (const QModelIndexList &indexes, QDataStream &stream) const
bool	decodeData (int row, int column, const QModelIndex &parent, QDataStream &stream)
void	beginInsertRows (const QModelIndex &parent, int first, int last)
void	endInsertRows ()
void	beginRemoveRows (const QModelIndex &parent, int first, int last)
void	endRemoveRows ()
void	beginInsertColumns (const QModelIndex &parent, int first, int last)
void	endInsertColumns ()
void	beginRemoveColumns (const QModelIndex &parent, int first, int last)
void	endRemoveColumns ()
void	reset ()
void	changePersistentIndex (const QModelIndex &from, const QModelIndex &to)
void	changePersistentIndexList (const QModelIndexList &from, const QModelIndexList &to)
QModelIndexList	persistentIndexList () const
Private Member Functions
void	rowsAboutToBeInserted (const QModelIndex &parent, int first, int last)
void	rowsInserted (const QModelIndex &parent, int first, int last)
void	rowsAboutToBeRemoved (const QModelIndex &parent, int first, int last)
void	rowsRemoved (const QModelIndex &parent, int first, int last)
void	columnsAboutToBeInserted (const QModelIndex &parent, int first, int last)
void	columnsInserted (const QModelIndex &parent, int first, int last)
void	columnsAboutToBeRemoved (const QModelIndex &parent, int first, int last)
void	columnsRemoved (const QModelIndex &parent, int first, int last)
void	modelAboutToBeReset ()
void	modelReset ()
Friends
class	QPersistentModelIndexData

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Constructor & Destructor Documentation

QAbstractItemModel::QAbstractItemModel

(

QObject *

parent = 0

)

[explicit]

Constructs an abstract item model with the given parent.

Definition at line 1083 of file qabstractitemmodel.cpp.

    : QObject(*new QAbstractItemModelPrivate, parent)
{
}

QAbstractItemModel::~QAbstractItemModel

(

)

[virtual]

Destroys the abstract item model.

Definition at line 1099 of file qabstractitemmodel.cpp.

{
    d_func()->invalidatePersistentIndexes();
}

QAbstractItemModel::QAbstractItemModel	(	QAbstractItemModelPrivate &	dd,
		QObject *	parent = 0
	)			[protected]

Definition at line 1091 of file qabstractitemmodel.cpp.

    : QObject(dd, parent)
{
}

---

Member Function Documentation

bool QAbstractItemModel::hasIndex	(	int	row,
		int	column,
		const QModelIndex &	parent = QModelIndex()
	)			const

Returns true if the model returns a valid QModelIndex for row and column with parent, otherwise returns false.

Definition at line 1270 of file qabstractitemmodel.cpp.

References columnCount(), QObject::parent(), and rowCount().

Referenced by QAbstractTableModel::dropMimeData(), QAbstractListModel::dropMimeData(), QListModel::index(), QAbstractTableModel::index(), QAbstractListModel::index(), and QTableWidget::setRangeSelected().

{
    if (row < 0 || column < 0)
        return false;
    return row < rowCount(parent) && column < columnCount(parent);
}

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QModelIndex QAbstractItemModel::index	(	int	row,
		int	column,
		const QModelIndex &	parent = QModelIndex()
	)			const [pure virtual]

Returns the index of the item in the model specified by the given row, column and parent index.

When reimplementing this function in a subclass, call createIndex() to generate model indexes that other components can use to refer to items in your model.

See also:

createIndex()

Referenced by addMail(), buddy(), QUnsortedModelEngine::buildIndices(), QTableWidget::cellWidget(), QModelIndex::child(), QAccessibleItemView::childIndex(), Main::collapseView(), Main::completelyExpandIndex(), QPersistentModelIndexData::create(), qdesigner_internal::ConnectionDelegate::createEditor(), QListViewPrivate::createItems(), PieView::dataChanged(), decodeData(), QListViewPrivate::doStaticLayout(), QTableViewPrivate::drawAndClipSpans(), QTreeWidget::dropEvent(), QListWidget::dropEvent(), QTableWidget::dropMimeData(), QListWidget::dropMimeData(), QAbstractItemViewPrivate::fetchMore(), QCompletionEngine::filter(), QSortedModelEngine::filter(), MySortFilterProxyModel::filterAcceptsRow(), QCompletionEngine::filterHistory(), QComboBox::findData(), flags(), QAbstractProxyModel::flags(), foreachIndex(), foreachIndex_helper(), PieView::indexAt(), QDataWidgetMapperPrivate::indexAt(), QItemSelectionRange::indexes(), QComboBox::insertItem(), QItemSelectionRange::intersect(), QListViewPrivate::intersectingStaticSet(), itemData(), QComboBox::itemData(), PieView::itemRect(), PieView::itemRegion(), QListViewPrivate::itemSize(), QComboBox::itemText(), TextEdit::keyPressEvent(), QTreeViewPrivate::layout(), QListViewPrivate::listViewItemToIndex(), QCompletionModel::mapToSource(), match(), PieView::moveCursor(), MainWindow::openFile(), QSortFilterProxyModelGreaterThan::operator()(), QSortFilterProxyModelLessThan::operator()(), PieView::paintEvent(), MainWindow::printImage(), QSortFilterProxyModelPrivate::proxy_intervals_for_source_items_to_add(), QSortFilterProxyModelPrivate::proxy_to_source(), QAccessibleItemRow::rect(), MainWindow::saveFile(), QTreeViewPrivate::select(), QItemSelectionModel::selectedColumns(), QItemSelectionModel::selectedRows(), QTableWidget::setCellWidget(), QComboBox::setCurrentIndex(), setData(), QComboBox::setItemData(), setItemData(), QComboBox::setItemIcon(), QComboBox::setItemText(), QTableWidget::setRangeSelected(), QModelIndex::sibling(), QSortFilterProxyModelPrivate::source_items_removed(), QItemSelection::split(), QTableViewPrivate::trimHiddenSelections(), and PieView::visualRegionForSelection().

QModelIndex QAbstractItemModel::parent

(

const QModelIndex &

index

)

const [pure virtual]

Returns the parent of the model item with the given index, or QModelIndex() if it has no parent.

A common convention used in models that expose tree data structures is that only items in the first column have children. When reimplementing this function in a subclass that provides a tree model, you should return a model index corresponding to an item in the first column by calling createIndex() with a value of 0 for the column number.

See also:

createIndex()

Referenced by QAbstractItemViewPrivate::_q_columnsAboutToBeRemoved(), qdesigner_internal::level(), qdesigner_internal::SheetDelegate::paint(), MessagesItemDelegate::paint(), QModelIndex::parent(), QTreeViewPrivate::reexpandChildren(), and QModelIndex::sibling().

QModelIndex QAbstractItemModel::sibling	(	int	row,
		int	column,
		const QModelIndex &	index
	)			const [inline]

Returns the sibling at row and column for the item at index, or an invalid QModelIndex if there is no sibling at that location.

sibling() is just a convenience function that finds the item's parent, and uses it to retrieve the index of the child item in the specified row and column.

See also:

index(), QModelIndex::row(), QModelIndex::column()

Definition at line 142 of file qabstractitemmodel.h.

References index, and QObject::parent().

Referenced by QAbstractItemViewPrivate::_q_columnsAboutToBeRemoved(), QTreeViewPrivate::select(), and QDirModel::setData().

        { return index(row, column, parent(idx)); }

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int QAbstractItemModel::rowCount

(

const QModelIndex &

parent = QModelIndex()

)

const [pure virtual]

Returns the number of rows under the given parent.

See also:

columnCount()

Referenced by QAccessibleItemView::childCount(), Main::collapseView(), Main::completelyExpandIndex(), QComboBox::count(), QSortFilterProxyModelPrivate::create_mapping(), PieView::dataChanged(), QListViewPrivate::doDynamicLayout(), QListViewPrivate::doItemsLayout(), dropMimeData(), QAbstractItemViewPrivate::fetchMore(), QCompletionEngine::filter(), QUnsortedModelEngine::filter(), QCompletionEngine::filterHistory(), QUnsortedModelEngine::filterOnDemand(), foreachIndex(), foreachIndex_helper(), QAbstractListModel::hasChildren(), hasChildren(), QAbstractTableModel::hasChildren(), hasIndex(), QTreeViewPrivate::hasVisibleChildren(), QCompletionModel::index(), PieView::indexAt(), QSortedModelEngine::indexHint(), QListViewPrivate::initDynamicLayout(), QDataWidgetMapperPrivate::itemCount(), PieView::itemRegion(), QListViewPrivate::itemSize(), QTreeViewPrivate::layout(), match(), MainWindow::openFile(), PieView::paintEvent(), QListViewPrivate::prepareItemsLayout(), MainWindow::printImage(), QCompletionModel::rowCount(), PieView::rows(), MainWindow::saveFile(), QItemSelectionModel::selectedColumns(), QTableView::selectRow(), PieView::setSelection(), QTableWidget::setVerticalHeaderLabels(), and QCompleterPrivate::showPopup().

int QAbstractItemModel::columnCount

(

const QModelIndex &

parent = QModelIndex()

)

const [pure virtual]

Returns the number of columns for the children of the given parent.

In most subclasses, the number of columns is independent of the parent. For example:

itemviews/simpledommodel/dommodel.cpp columnCount /^$/

See also:

rowCount()

Referenced by QAbstractItemViewPrivate::_q_columnsAboutToBeRemoved(), QAccessibleItemRow::childCount(), QAbstractItemViewPrivate::clearOrRemove(), QCompletionModel::columnCount(), QSortFilterProxyModelPrivate::create_mapping(), decodeData(), hasChildren(), QAbstractTableModel::hasChildren(), hasIndex(), QDataWidgetMapperPrivate::itemCount(), QListViewPrivate::prepareItemsLayout(), MainWindow::printImage(), QAccessibleItemRow::rect(), rowAt(), QTableView::selectColumn(), QItemSelectionModel::selectedRows(), QTableWidget::setHorizontalHeaderLabels(), and PieView::setSelection().

bool QAbstractItemModel::hasChildren

(

const QModelIndex &

parent = QModelIndex()

)

const [virtual]

Returns true if parent has any children; otherwise returns false. Use rowCount() on the parent to find out the number of children.

See also:

parent() index()

Definition at line 1284 of file qabstractitemmodel.cpp.

References columnCount(), QObject::parent(), and rowCount().

Referenced by QTreeViewPrivate::expand(), QCompletionModel::hasChildren(), QTreeViewPrivate::hasVisibleChildren(), QTreeViewPrivate::layout(), and match().

{
    return (rowCount(parent) > 0) && (columnCount(parent) > 0);
}

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QVariant QAbstractItemModel::data	(	const QModelIndex &	index,
		int	role = Qt::DisplayRole
	)			const [pure virtual]

Returns the data stored under the given role for the item referred to by the index.

See also:

Qt::ItemDataRole, setData(), headerData()

Referenced by QUnsortedModelEngine::buildIndices(), qdesigner_internal::ConnectionDelegate::createEditor(), QModelIndex::data(), QCompletionModel::data(), PieView::dataChanged(), decodeData(), QAbstractTableModel::dropMimeData(), QAbstractListModel::dropMimeData(), dropMimeData(), QSortedModelEngine::filter(), PieView::indexAt(), itemData(), QComboBox::itemData(), QComboBox::itemIcon(), PieView::itemRegion(), QAbstractItemView::keyPressEvent(), MySortFilterProxyModel::lessThan(), match(), mimeData(), qdesigner_internal::SheetDelegate::paint(), BookDelegate::paint(), PieView::paintEvent(), QCompleter::pathFromIndex(), PieView::rowsAboutToBeRemoved(), PieView::rowsInserted(), MainWindow::saveFile(), QItemDelegate::setModelData(), qdesigner_internal::ActionRepository::startDrag(), and QAccessibleItemRow::text().

bool QAbstractItemModel::setData	(	const QModelIndex &	index,
		const QVariant &	value,
		int	role = Qt::EditRole
	)			[virtual]

Sets the role data for the item at index to value. Returns true if successful; otherwise returns false.

The dataChanged() signal should be emitted if the data was successfully set.

The base class implementation returns false. This function and data() must be reimplemented for editable models. Note that the dataChanged() signal must be emitted explicitly when reimplementing this function.

See also:

Qt::ItemDataRole, data(), itemData()

Definition at line 1323 of file qabstractitemmodel.cpp.

References index(), and value.

Referenced by addMail(), BookDelegate::editorEvent(), QItemDelegate::editorEvent(), QComboBox::insertItems(), MainWindow::openFile(), CheckStateSetter::operator()(), QSqlTableModel::setData(), QComboBox::setItemData(), setItemData(), QComboBox::setItemIcon(), QComboBox::setItemText(), VariantDelegate::setModelData(), ImageDelegate::setModelData(), SpreadSheetDelegate::setModelData(), QItemDelegate::setModelData(), SpinBoxDelegate::setModelData(), and qdesigner_internal::ColorDelegate::setModelData().

{
    Q_UNUSED(index);
    Q_UNUSED(value);
    Q_UNUSED(role);
    return false;
}

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QVariant QAbstractItemModel::headerData	(	int	section,
		Qt::Orientation	orientation,
		int	role = Qt::DisplayRole
	)			const [virtual]

Returns the data for the given role and section in the header with the specified orientation.

See also:

Qt::ItemDataRole, setHeaderData(), QHeaderView

Definition at line 1767 of file qabstractitemmodel.cpp.

References Qt::AlignCenter, Qt::DisplayRole, and Qt::TextAlignmentRole.

Referenced by qdesigner_internal::QPropertyEditorModel::headerData(), QSqlQueryModel::headerData(), QStandardItemModel::headerData(), QDirModel::headerData(), Model::headerData(), and QAccessibleHeader::text().

{
    Q_UNUSED(orientation);
    if (role == Qt::DisplayRole)
        return section + 1;
    if (role == Qt::TextAlignmentRole)
        return Qt::AlignCenter;
    return QVariant();
}

bool QAbstractItemModel::setHeaderData	(	int	section,
		Qt::Orientation	orientation,
		const QVariant &	value,
		int	role = Qt::EditRole
	)			[virtual]

Sets the role for the header section to value. The orientation gives the orientation of the header.

Note that the headerDataChanged() signal must be emitted explicitly when reimplementing this function.

See also:

Qt::ItemDataRole, headerData()

Definition at line 1787 of file qabstractitemmodel.cpp.

References value.

Referenced by MainWindow::setupModel().

{
    Q_UNUSED(section);
    Q_UNUSED(orientation);
    Q_UNUSED(value);
    Q_UNUSED(role);
    return false;
}

QMap< int, QVariant > QAbstractItemModel::itemData

(

const QModelIndex &

index

)

const [virtual]

Returns a map with values for all predefined roles in the model for the item at the given index.

Reimplemented this function if you want to extend the default behavior of this function to include custom roles in the map.

See also:

Qt::ItemDataRole, data()

Definition at line 1299 of file qabstractitemmodel.cpp.

References data(), i, index(), QMap< Key, T >::insert(), QVariant::Invalid, and Qt::UserRole.

Referenced by QAbstractItemViewPrivate::clearOrRemove(), and encodeData().

{
    QMap<int, QVariant> roles;
    for (int i = 0; i < Qt::UserRole; ++i) {
        QVariant variantData = data(index, i);
        if (variantData.type() != QVariant::Invalid)
            roles.insert(i, variantData);
    }
    return roles;
}

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bool QAbstractItemModel::setItemData	(	const QModelIndex &	index,
		const QMap< int, QVariant > &	roles
	)			[virtual]

For every Qt::ItemDataRole in roles, sets the role data for the item at index to the associated value in roles. Returns true if successful; otherwise returns false.

See also:

setData() data() itemData()

Definition at line 1347 of file qabstractitemmodel.cpp.

References b, QMap< Key, T >::begin(), QMap< Key, T >::end(), index(), and setData().

Referenced by QAbstractItemViewPrivate::clearOrRemove(), decodeData(), QAbstractTableModel::dropMimeData(), QAbstractListModel::dropMimeData(), and QComboBox::insertItem().

{
    bool b = true;
    for (QMap<int, QVariant>::ConstIterator it = roles.begin(); it != roles.end(); ++it)
        b = b && setData(index, it.value(), it.key());
    return b;
}

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QStringList QAbstractItemModel::mimeTypes

(

)

const [virtual]

Returns a list of MIME types that can be used to describe a list of model indexes.

See also:

mimeData()

Definition at line 1361 of file qabstractitemmodel.cpp.

References types.

Referenced by QAbstractTableModel::dropMimeData(), QAbstractListModel::dropMimeData(), dropMimeData(), and mimeData().

{
    QStringList types;
    types << QLatin1String("application/x-qabstractitemmodeldatalist");
    return types;
}

QMimeData * QAbstractItemModel::mimeData

(

const QModelIndexList &

indexes

)

const [virtual]

Returns an object that contains serialized items of data corresponding to the list of indexes specified. The formats used to describe the encoded data is obtained from the mimeTypes() function.

If the list of indexes is empty, or there are no supported MIME types, 0 is returned rather than a serialized empty list.

See also:

mimeTypes(), dropMimeData()

Definition at line 1378 of file qabstractitemmodel.cpp.

References QList< T >::count(), data(), encodeData(), mimeTypes(), QTest::stream, types, and QIODevice::WriteOnly.

Referenced by QTreeModel::internalMimeData(), QTableModel::internalMimeData(), and QListModel::internalMimeData().

{
    if (indexes.count() <= 0)
        return 0;
    QStringList types = mimeTypes();
    if (types.isEmpty())
        return 0;
    QMimeData *data = new QMimeData();
    QString format = types.at(0);
    QByteArray encoded;
    QDataStream stream(&encoded, QIODevice::WriteOnly);
    encodeData(indexes, stream);
    data->setData(format, encoded);
    return data;
}

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bool QAbstractItemModel::dropMimeData	(	const QMimeData *	data,
		Qt::DropAction	action,
		int	row,
		int	column,
		const QModelIndex &	parent
	)			[virtual]

Handles the data supplied by a drag and drop operation that ended with the given action. Although the specified row, column and parent indicate the location of an item in the model where the operation ended, it is the responsibility of the view to provide a suitable location for where the data should be inserted.

For instance, a drop action on an item in a QTreeView can result in new items either being inserted as children of the item specified by row, column, and parent, or as siblings of the item.

See also:

supportedDropActions(), {Using Drag and Drop with Item Views}

Definition at line 1407 of file qabstractitemmodel.cpp.

References Qt::CopyAction, QVariant::data(), data(), decodeData(), mimeTypes(), Qt::MoveAction, QObject::parent(), QIODevice::ReadOnly, rowCount(), QTest::stream, and types.

{
    // check if the action is supported
    if (!data || !(action == Qt::CopyAction || action == Qt::MoveAction))
        return false;
    // check if the format is supported
    QStringList types = mimeTypes();
    if (types.isEmpty())
        return false;
    QString format = types.at(0);
    if (!data->hasFormat(format))
        return false;
    if (row > rowCount(parent))
        row = rowCount(parent);
    if (row == -1)
        row = rowCount(parent);
    if (column == -1)
        column = 0;
    // decode and insert
    QByteArray encoded = data->data(format);
    QDataStream stream(&encoded, QIODevice::ReadOnly);
    return decodeData(row, column, parent, stream);
}

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Qt::DropActions QAbstractItemModel::supportedDropActions

(

)

const [virtual]

Since:

4.2

Returns the drop actions supported by this model.

The default implementation returns Qt::CopyAction. Reimplement this function if you wish to support additional actions. Note that you must also reimplement the dropMimeData() function to handle the additional operations.

See also:

dropMimeData(), Qt::DropActions, {Using Drag and Drop with Item Views}

Definition at line 1445 of file qabstractitemmodel.cpp.

References Qt::CopyAction.

Referenced by QAbstractItemViewPrivate::dropOn(), and supportedDragActions().

{
    return Qt::CopyAction;
}

Qt::DropActions QAbstractItemModel::supportedDragActions

(

)

const

Returns the actions supported by the data in this model.

The default implementation returns supportedDropActions() unless specific values have been set with setSupportedDragActions().

supportedDragActions() is used by QAbstractItemView::startDrag() as the default values when a drag occurs.

See also:

Qt::DropActions, {Using Drag and Drop with Item Views}

Definition at line 1461 of file qabstractitemmodel.cpp.

References d, and supportedDropActions().

{
    // ### Qt 5: make this virtual or these properties
    Q_D(const QAbstractItemModel);
    if (d->supportedDragActions != -1)
        return d->supportedDragActions;
    return supportedDropActions();
}

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void QAbstractItemModel::setSupportedDragActions

(

Qt::DropActions

actions

)

Since:

4.2

Sets the supported drag actions for the items in the model.

See also:

supportedDragActions(), {Using Drag and Drop with Item Views}

Definition at line 1477 of file qabstractitemmodel.cpp.

References d.

{
    Q_D(QAbstractItemModel);
    d->supportedDragActions = actions;
}

bool QAbstractItemModel::insertRows	(	int	row,
		int	count,
		const QModelIndex &	parent = QModelIndex()
	)			[virtual]

On models that support this, inserts count rows into the model before the given row. The items in the new row will be children of the item represented by the parent model index.

If row is 0, the rows are prepended to any existing rows in the parent. If row is rowCount(), the rows are appended to any existing rows in the parent. If parent has no children, a single column with count rows is inserted.

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

The base class implementation does nothing and returns false.

If you implement your own model, you can reimplement this function if you want to support insertions. Alternatively, you can provide you own API for altering the data.

See also:

insertColumns(), removeRows(), beginInsertRows(), endInsertRows()

Definition at line 1504 of file qabstractitemmodel.cpp.

Referenced by decodeData(), and MainWindow::openFile().

{
    return false;
}

bool QAbstractItemModel::insertColumns	(	int	column,
		int	count,
		const QModelIndex &	parent = QModelIndex()
	)			[virtual]

On models that support this, inserts count new columns into the model before the given column. The items in each new column will be children of the item represented by the parent model index.

If column is 0, the columns are prepended to any existing columns. If column is columnCount(), the columns are appended to any existing columns. If parent has no children, a single row with count columns is inserted.

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

The base class implementation does nothing and returns false.

If you implement your own model, you can reimplement this function if you want to support insertions. Alternatively, you can provide you own API for altering the data.

See also:

insertRows(), removeColumns(), beginInsertColumns(), endInsertColumns()

Definition at line 1530 of file qabstractitemmodel.cpp.

Referenced by decodeData(), and insertColumn().

{
    return false;
}

bool QAbstractItemModel::removeRows	(	int	row,
		int	count,
		const QModelIndex &	parent = QModelIndex()
	)			[virtual]

On models that support this, removes count rows starting with the given row under parent parent from the model. Returns true if the rows were successfully removed; otherwise returns false.

The base class implementation does nothing and returns false.

If you implement your own model, you can reimplement this function if you want to support removing. Alternatively, you can provide you own API for altering the data.

See also:

removeRow(), removeColumns(), insertColumns(), beginRemoveRows(), endRemoveRows()

Definition at line 1548 of file qabstractitemmodel.cpp.

Referenced by QComboBox::clear(), QAbstractItemViewPrivate::clearOrRemove(), QComboBox::insertItem(), QComboBox::insertItems(), MainWindow::openFile(), QComboBox::removeItem(), removeRow(), and QComboBox::setMaxCount().

{
    return false;
}

bool QAbstractItemModel::removeColumns	(	int	column,
		int	count,
		const QModelIndex &	parent = QModelIndex()
	)			[virtual]

On models that support this, removes count columns starting with the given column under parent parent from the model. Returns true if the columns were successfully removed; otherwise returns false.

The base class implementation does nothing and returns false.

If you implement your own model, you can reimplement this function if you want to support removing. Alternatively, you can provide you own API for altering the data.

See also:

removeColumn(), removeRows(), insertColumns(), beginRemoveColumns(), endRemoveColumns()

Definition at line 1566 of file qabstractitemmodel.cpp.

Referenced by removeColumn().

{
    return false;
}

bool QAbstractItemModel::insertRow	(	int	row,
		const QModelIndex &	parent = QModelIndex()
	)			[inline]

Inserts a single row before the given row in the child items of the parent specified. Returns true if the row is inserted; otherwise returns false.

See also:

insertRows() insertColumn() removeRow()

Definition at line 257 of file qabstractitemmodel.h.

Referenced by addMail(), QSqlTableModel::insertRecord(), QStandardItemModel::insertRow(), Browser::insertRow(), and QCalendarModel::setHorizontalHeaderFormat().

{ return insertRows(arow, 1, aparent); }

bool QAbstractItemModel::insertColumn	(	int	column,
		const QModelIndex &	parent = QModelIndex()
	)			[inline]

Inserts a single column before the given column in the child items of the parent specified. Returns true if the column is inserted; otherwise returns false.

See also:

insertColumns() insertRow() removeColumn()

Definition at line 259 of file qabstractitemmodel.h.

References insertColumns().

Referenced by QStandardItemModel::insertColumn(), and QCalendarModel::setWeekNumbersShown().

{ return insertColumns(acolumn, 1, aparent); }

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bool QAbstractItemModel::removeRow	(	int	row,
		const QModelIndex &	parent = QModelIndex()
	)			[inline]

Removes the given row from the child items of the parent specified. Returns true if the row is removed; otherwise returns false.

See also:

removeRows(), removeColumn(), insertRow()

Definition at line 261 of file qabstractitemmodel.h.

References removeRows().

Referenced by Browser::deleteRow(), and QCalendarModel::setHorizontalHeaderFormat().

{ return removeRows(arow, 1, aparent); }

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bool QAbstractItemModel::removeColumn	(	int	column,
		const QModelIndex &	parent = QModelIndex()
	)			[inline]

Removes the given column from the child items of the parent specified. Returns true if the column is removed; otherwise returns false.

See also:

removeColumns(), removeRow(), insertColumn()

Definition at line 263 of file qabstractitemmodel.h.

References removeColumns().

Referenced by QCalendarModel::setWeekNumbersShown().

{ return removeColumns(acolumn, 1, aparent); }

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void QAbstractItemModel::fetchMore

(

const QModelIndex &

parent

)

[virtual]

Fetches any available data for the items with the parent specified by the parent index.

Reimplement this if you have incremental data.

The default implementation does nothing.

See also:

canFetchMore()

Definition at line 1581 of file qabstractitemmodel.cpp.

Referenced by QTreeViewPrivate::expand(), and QAbstractItemViewPrivate::fetchMore().

{
    // do nothing
}

bool QAbstractItemModel::canFetchMore

(

const QModelIndex &

parent

)

const [virtual]

Returns true if there is more data available for parent, otherwise false.

The default implementation always returns false.

See also:

fetchMore()

Definition at line 1594 of file qabstractitemmodel.cpp.

Referenced by QTreeViewPrivate::expand(), and QAbstractItemViewPrivate::fetchMore().

{
    return false;
}

Qt::ItemFlags QAbstractItemModel::flags

(

const QModelIndex &

index

)

const [virtual]

Returns the item flags for the given index.

The base class implementation returns a combination of flags that enables the item (ItemIsEnabled) and allows it to be selected (ItemIsSelectable).

See also:

Qt::ItemFlags

Definition at line 1608 of file qabstractitemmodel.cpp.

References d, index(), Qt::ItemIsEnabled, and Qt::ItemIsSelectable.

Referenced by QTableViewPrivate::drawCell(), QAbstractItemViewPrivate::dropOn(), QItemDelegate::editorEvent(), QDirModel::flags(), QModelIndex::flags(), EditableSqlModel::flags(), qdesigner_internal::FlagBoxModel::flags(), qdesigner_internal::QPropertyEditorModel::flags(), QCalendarModel::flags(), QStringListModel::flags(), QListView::paintEvent(), and QAbstractItemViewPrivate::shouldEdit().

{
    Q_D(const QAbstractItemModel);
    if (!d->indexValid(index))
        return 0;

    return Qt::ItemIsSelectable|Qt::ItemIsEnabled;
}

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void QAbstractItemModel::sort	(	int	column,
		Qt::SortOrder	order = Qt::AscendingOrder
	)			[virtual]

Sorts the model by column in the given order.

The base class implementation does nothing.

Definition at line 1622 of file qabstractitemmodel.cpp.

{
    Q_UNUSED(column);
    Q_UNUSED(order);
    // do nothing
}

QModelIndex QAbstractItemModel::buddy

(

const QModelIndex &

index

)

const [virtual]

Returns a model index for the buddy of the item represented by index. When the user wants to edit an item, the view will call this function to check whether another item in the model should be edited instead, and construct a delegate using the model index returned by the buddy item.

In the default implementation each item is its own buddy.

Definition at line 1637 of file qabstractitemmodel.cpp.

References index().

Referenced by QAbstractItemViewPrivate::openEditor(), and QAbstractItemViewPrivate::sendDelegateEvent().

{
    return index;
}

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QModelIndexList QAbstractItemModel::match	(	const QModelIndex &	start,
		int	role,
		const QVariant &	value,
		int	hits = 1,
		Qt::MatchFlags	flags = Qt::MatchFlags(Qt::MatchStartsWith|Qt::MatchWrap)
	)			const [virtual]

Returns a list of indexes for the items where the data stored under the given role matches the specified value. The way the search is performed is defined by the flags given. The list that is returned may be empty.

The search starts from the start index, and continues until the number of matching data items equals hits, the search reaches the last row, or the search reaches start again, depending on whether MatchWrap is specified in flags.

By default, this function will perform a wrapping, string-based comparison on all items, searching for items that begin with the search term specified by value.

Definition at line 1657 of file qabstractitemmodel.cpp.

References QList< T >::append(), Qt::CaseInsensitive, Qt::CaseSensitive, QList< T >::count(), data(), hasChildren(), i, index(), QString::isEmpty(), Qt::MatchCaseSensitive, Qt::MatchContains, Qt::MatchEndsWith, Qt::MatchExactly, Qt::MatchFixedString, Qt::MatchRecursive, Qt::MatchRegExp, Qt::MatchStartsWith, Qt::MatchWildcard, Qt::MatchWrap, p, QObject::parent(), rowCount(), start, t, QVariant::toString(), value, and QRegExp::Wildcard.

Referenced by IndexListModel::filter(), QComboBox::findData(), QStandardItemModel::findItems(), QSortFilterProxyModel::match(), QFileDialogPrivate::matchDir(), and QFileDialogPrivate::matchName().

{
    QModelIndexList result;
    uint matchType = flags & 0x0F;
    Qt::CaseSensitivity cs = flags & Qt::MatchCaseSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive;
    bool recurse = flags & Qt::MatchRecursive;
    bool wrap = flags & Qt::MatchWrap;
    bool allHits = (hits == -1);
    QString text; // only convert to a string if it is needed
    QModelIndex p = parent(start);
    int from = start.row();
    int to = rowCount(p);

    // iterates twice if wrapping
    for (int i = 0; (wrap && i < 2) || (!wrap && i < 1); ++i) {
        for (int r = from; (r < to) && (allHits || result.count() < hits); ++r) {
            QModelIndex idx = index(r, start.column(), p);
            if (!idx.isValid())
                 continue;
            QVariant v = data(idx, role);
            // QVariant based matching
            if (matchType == Qt::MatchExactly) {
                if (value == v)
                    result.append(idx);
            } else { // QString based matching
                if (text.isEmpty()) // lazy conversion
                    text = value.toString();
                QString t = v.toString();
                switch (matchType) {
                case Qt::MatchRegExp:
                    if (QRegExp(text, cs).exactMatch(t))
                        result.append(idx);
                    break;
                case Qt::MatchWildcard:
                    if (QRegExp(text, cs, QRegExp::Wildcard).exactMatch(t))
                        result.append(idx);
                    break;
                case Qt::MatchStartsWith:
                    if (t.startsWith(text, cs))
                        result.append(idx);
                    break;
                case Qt::MatchEndsWith:
                    if (t.endsWith(text, cs))
                        result.append(idx);
                    break;
                case Qt::MatchFixedString:
                    if (t.compare(text, cs) == 0)
                        result.append(idx);
                    break;
                case Qt::MatchContains:
                default:
                    if (t.contains(text, cs))
                        result.append(idx);
                }
            }
            if (recurse && hasChildren(idx)) { // search the hierarchy
                result += match(index(0, idx.column(), idx), role,
                                (text.isEmpty() ? value : text),
                                (allHits ? -1 : hits - result.count()), flags);
            }
        }
        // prepare for the next iteration
        from = 0;
        to = start.row();
    }
    return result;
}

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QSize QAbstractItemModel::span

(

const QModelIndex &

index

)

const [virtual]

Returns the row and column span of the item represented by index.

Note: span is not used currently, but will be in the future.

Definition at line 1733 of file qabstractitemmodel.cpp.

{
    return QSize(1, 1);
}

void QAbstractItemModel::dataChanged	(	const QModelIndex &	topLeft,
		const QModelIndex &	bottomRight
	)			[signal]

This signal is emitted whenever the data in an existing item changes. The affected items are those between topLeft and bottomRight inclusive (of the same parent).

Note that this signal must be emitted explicitly when reimplementing the setData() function.

See also:

headerDataChanged(), setData(), layoutChanged()

Referenced by qdesigner_internal::ResourceModel::changePrefix(), qdesigner_internal::ConnectionModel::connectionChanged(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), QTreeModel::emitDataChanged(), FeatureTreeModel::featureChanged(), QCalendarModel::internalUpdate(), QTreeModel::itemChanged(), QTableModel::itemChanged(), QListModel::itemChanged(), qdesigner_internal::QPropertyEditorModel::refresh(), QTableModel::removeItem(), QSqlTableModel::revertRow(), QDirModel::setData(), qdesigner_internal::PaletteModel::setData(), QSqlTableModel::setData(), FeatureTreeModel::setData(), QStringListModel::setData(), qdesigner_internal::FlagBoxModel::setData(), QTableModel::setItem(), qdesigner_internal::PaletteModel::setPalette(), PhraseModel::setPhrase(), QCompletionModel::setSourceModel(), QSortFilterProxyModel::setSourceModel(), MessageModel::setTranslation(), ContextModel::sort(), PhraseModel::sort(), MessageModel::sort(), ContextModel::updateItem(), and MessageModel::updateItem().

void QAbstractItemModel::headerDataChanged	(	Qt::Orientation	orientation,
		int	first,
		int	last
	)			[signal]

This signal is emitted whenever a header is changed. The orientation indicates whether the horizontal or vertical header has changed. The sections in the header from the first to the last need to be updated.

Note that this signal must be emitted explicitly when reimplementing the setHeaderData() function.

If you are changing the number of columns or rows you don't need to emit this signal, but use the begin/end functions.

See also:

headerData(), setHeaderData(), dataChanged()

Referenced by QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), QTreeModel::emitDataChanged(), QCalendarModel::internalUpdate(), QTableModel::itemChanged(), QTableModel::removeItem(), QSqlQueryModel::setHeaderData(), QTableModel::setHorizontalHeaderItem(), QStandardItemModel::setHorizontalHeaderItem(), QSortFilterProxyModel::setSourceModel(), QTableModel::setVerticalHeaderItem(), and QStandardItemModel::setVerticalHeaderItem().

void QAbstractItemModel::layoutChanged

(

)

[signal]

This signal is emitted whenever the layout of items exposed by the model has changed; for example, when the model has been sorted. When this signal is received by a view, it should update the layout of items to reflect this change.

When subclassing QAbstractItemModel or QAbstractProxyModel, ensure that you emit layoutAboutToBeChanged() before changing the order of items or altering the structure of the data you expose to views, and emit layoutChanged() after changing the layout.

Subclasses should update any persistent model indexes before emitting layoutChanged().

See also:

layoutAboutToBeChanged(), dataChanged(), headerDataChanged(), reset(), changePersistentIndex()

Referenced by FeatureTreeModel::addFeature(), QSortFilterProxyModel::clear(), FeatureTreeModel::clear(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), FeatureTreeModel::featureChanged(), QDirModel::refresh(), QDirModel::setFilter(), QTableModel::setItem(), QDirModel::setNameFilters(), QDirModel::setSorting(), QCompletionModel::setSourceModel(), QSortFilterProxyModel::setSourceModel(), QTableModel::sort(), QListModel::sort(), QTreeModel::sort(), and QStringListModel::sort().

void QAbstractItemModel::layoutAboutToBeChanged

(

)

[signal]

Since:

4.2

This signal is emitted just before the layout of a model is changed. Components connected to this signal use it to adapt to changes in the model's layout.

Subclasses should update any persistent model indexes after emitting layoutAboutToBeChanged().

See also:

layoutChanged(), changePersistentIndex()

Referenced by QSortFilterProxyModel::clear(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), QDirModel::refresh(), QDirModel::setFilter(), QTableModel::setItem(), QDirModel::setNameFilters(), QDirModel::setSorting(), QSortFilterProxyModel::setSourceModel(), QTableModel::sort(), QListModel::sort(), QTreeModel::sort(), and QStringListModel::sort().

void QAbstractItemModel::rowsAboutToBeInserted	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted just before rows are inserted into the model. The new items will be positioned between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

insertRows(), beginInsertRows()

Referenced by beginInsertRows(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::rowsInserted	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted after rows have been inserted into the model. The new items are those between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

insertRows(), beginInsertRows()

Referenced by QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), endInsertRows(), QCompletionModel::setSourceModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::rowsAboutToBeRemoved	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted just before rows are removed from the model. The items that will be removed are those between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

removeRows(), beginRemoveRows()

Referenced by beginRemoveRows(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::rowsRemoved	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted after rows have been removed from the model. The removed items are those between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

removeRows(), beginRemoveRows()

Referenced by QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), endRemoveRows(), QCompletionModel::setSourceModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::columnsAboutToBeInserted	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted just before columns are inserted into the model. The new items will be positioned between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

insertColumns(), beginInsertColumns()

Referenced by beginInsertColumns(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::columnsInserted	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted after columns have been inserted into the model. The new items are those between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

insertColumns(), beginInsertColumns()

Referenced by QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), endInsertColumns(), QCompletionModel::setSourceModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::columnsAboutToBeRemoved	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted just before columns are removed from the model. The items to be removed are those between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

removeColumns(), beginRemoveColumns()

Referenced by beginRemoveColumns(), QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), and QSortFilterProxyModel::setSourceModel().

void QAbstractItemModel::columnsRemoved	(	const QModelIndex &	parent,
		int	start,
		int	end
	)			[private]

This signal is emitted after columns have been removed from the model. The removed items are those between start and end inclusive, under the given parent item.

{Note:} Components connected to this signal use it to adapt to changes in the model's dimensions. It can only be emitted by the QAbstractItemModel implementation, and cannot be explicitly emitted in subclass code.

See also:

removeColumns(), beginRemoveColumns()

Referenced by QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), endRemoveColumns(), QCompletionModel::setSourceModel(), and QSortFilterProxyModel::setSourceModel().

QAbstractItemModel::modelAboutToBeReset

(

)

[private]

Since:

4.2

This signal is emitted when reset() is called, before the model's internal state (e.g. persistent model indexes) has been invalidated.

See also:

reset(), modelReset()

Referenced by reset().

QAbstractItemModel::modelReset

(

)

[private]

Since:

4.1

This signal is emitted when reset() is called, after the model's internal state (e.g. persistent model indexes) has been invalidated.

See also:

reset(), modelAboutToBeReset()

Referenced by QProxyModel::connectToModel(), QProxyModel::disconnectFromModel(), QSortFilterProxyModel::QSortFilterProxyModel(), reset(), QCompletionModel::setSourceModel(), and QSortFilterProxyModel::setSourceModel().

bool QAbstractItemModel::submit

(

)

[virtual, slot]

Called to let the model know that it should submit whatever it has cached to the permanent storage. Typically used for row editing.

Returns false on error, otherwise true.

Definition at line 1745 of file qabstractitemmodel.cpp.

{
    return true;
}

void QAbstractItemModel::revert

(

)

[virtual, slot]

Called to let the model know that it should discart whatever it has cached. Typically used for row editing.

Definition at line 1755 of file qabstractitemmodel.cpp.

{
    // do nothing
}

QModelIndex QAbstractItemModel::createIndex	(	int	row,
		int	column,
		void *	ptr = 0
	)			const [inline, protected]

Creates a model index for the given row and column with the internal pointer ptr.

This function provides a consistent interface that model subclasses must use to create model indexes.

Definition at line 266 of file qabstractitemmodel.h.

Referenced by qdesigner_internal::QPropertyEditorModel::buddy(), qdesigner_internal::ConnectionModel::connectionChanged(), qdesigner_internal::ConnectionModel::connectionToIndex(), FeatureTreeModel::createIndex(), QCompletionModel::currentIndex(), QTreeModel::emitDataChanged(), QListModel::ensureSorted(), QTreeModel::ensureSorted(), FeatureTreeModel::index(), PPDOptionsModel::index(), qdesigner_internal::QPropertyEditorModel::index(), MessageModel::index(), QListModel::index(), QCompletionModel::index(), qdesigner_internal::ConnectionModel::index(), qdesigner_internal::FlagBoxModel::index(), QDirModel::index(), QDBusModel::index(), DomModel::index(), QAbstractTableModel::index(), Model::index(), QAbstractListModel::index(), TreeModel::index(), QUndoModel::index(), QTreeModel::index(), qdesigner_internal::ResourceModel::index(), QStandardItemModel::index(), QStandardItemModel::indexFromItem(), QSqlQueryModel::indexInQuery(), QSqlTableModel::indexInQuery(), qdesigner_internal::QPropertyEditorModel::indexOf(), QCompletionModel::mapFromSource(), PPDOptionsModel::parent(), Model::parent(), qdesigner_internal::ResourceModel::parent(), QDirModel::parent(), QDBusModel::parent(), MessageModel::parent(), TreeModel::parent(), DomModel::parent(), QSqlQueryModel::record(), QSqlTableModel::revertRow(), QUndoModel::selectedIndex(), QSqlQueryModel::setQuery(), QTableModel::sort(), QListModel::sort(), QStandardItemPrivate::sortChildren(), QTreeModel::sortItems(), and ContextModel::updateItem().

{ return QModelIndex(arow, acolumn, adata, this); }

QModelIndex QAbstractItemModel::createIndex	(	int	row,
		int	column,
		int	id
	)			const [inline, protected]

Use QModelIndex QAbstractItemModel::createIndex(int row, int column, quint32 id) instead.

Definition at line 268 of file qabstractitemmodel.h.

                         : 4312 ) // avoid conversion warning on 64-bit
#endif
{ return QModelIndex(arow, acolumn, reinterpret_cast<void*>(aid), this); }

QModelIndex QAbstractItemModel::createIndex	(	int	row,
		int	column,
		quint32	id
	)			const [inline, protected]

Creates a model index for the given row and column with the internal identifier, id.

This function provides a consistent interface that model subclasses must use to create model indexes.

Definition at line 277 of file qabstractitemmodel.h.

                         : 4312 ) // avoid conversion warning on 64-bit
#endif
{ return QModelIndex(arow, acolumn, reinterpret_cast<void*>(aid), this); }

void QAbstractItemModel::encodeData	(	const QModelIndexList &	indexes,
		QDataStream &	stream
	)			const [protected]

Definition at line 1826 of file qabstractitemmodel.cpp.

References QList< T >::begin(), QList< T >::end(), itemData(), and QTest::stream.

Referenced by mimeData().

{
    QModelIndexList::ConstIterator it = indexes.begin();
    for (; it != indexes.end(); ++it)
        stream << (*it).row() << (*it).column() << itemData(*it);
}

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bool QAbstractItemModel::decodeData	(	int	row,
		int	column,
		const QModelIndex &	parent,
		QDataStream &	stream
	)			[protected]

Definition at line 1836 of file qabstractitemmodel.cpp.

References QVector< T >::append(), QVector< T >::at(), c, columnCount(), QVector< T >::count(), data(), i, index(), insertColumns(), insertRows(), j, left(), QObject::parent(), qMax(), qMin(), QBitArray::resize(), right(), QBitArray::setBit(), setItemData(), QTest::stream, and QBitArray::testBit().

Referenced by QAbstractTableModel::dropMimeData(), QAbstractListModel::dropMimeData(), and dropMimeData().

{
    int top = INT_MAX;
    int left = INT_MAX;
    int bottom = 0;
    int right = 0;
    QVector<int> rows, columns;
    QVector<QMap<int, QVariant> > data;

    while (!stream.atEnd()) {
        int r, c;
        QMap<int, QVariant> v;
        stream >> r >> c >> v;
        rows.append(r);
        columns.append(c);
        data.append(v);
        top = qMin(r, top);
        left = qMin(c, left);
        bottom = qMax(r, bottom);
        right = qMax(c, right);
    }

    // insert the dragged items into the table, use a bit array to avoid overwriting items,
    // since items from different tables can have the same row and column
    int dragRowCount = 0;
    int dragColumnCount = right - left + 1;

    // Compute the number of continuous rows upon insertion and modify the rows to match
    QVector<int> rowsToInsert(bottom + 1);
    for (int i = 0; i < rows.count(); ++i)
        rowsToInsert[rows.at(i)] = 1;
    for (int i = 0; i < rowsToInsert.count(); ++i) {
        if (rowsToInsert[i] == 1){
            rowsToInsert[i] = dragRowCount;
            ++dragRowCount;
        }
    }
    for (int i = 0; i < rows.count(); ++i)
        rows[i] = top + rowsToInsert[rows[i]];

    QBitArray isWrittenTo(dragRowCount * dragColumnCount);

    // make space in the table for the dropped data
    int colCount = columnCount(parent);
    if (colCount == 0) {
        insertColumns(colCount, dragColumnCount - colCount, parent);
        colCount = columnCount(parent);
    }
    insertRows(row, dragRowCount, parent);

    row = qMax(0, row);
    column = qMax(0, column);

    // set the data in the table
    for (int j = 0; j < data.size(); ++j) {
        int relativeRow = rows.at(j) - top;
        int relativeColumn = columns.at(j) - left;
        int destinationRow = relativeRow + row;
        int destinationColumn = relativeColumn + column;
        int flat = (relativeRow * dragColumnCount) + relativeColumn;
        // if the item was already written to, or we just can't fit it in the table, create a new row
        if (destinationColumn >= colCount || isWrittenTo.testBit(flat)) {
            destinationColumn = qBound(column, destinationColumn, colCount - 1);
            destinationRow = row + dragRowCount;
            insertRows(row + dragRowCount, 1, parent);
            flat = (dragRowCount * dragColumnCount) + relativeColumn;
            isWrittenTo.resize(++dragRowCount * dragColumnCount);
        }
        if (!isWrittenTo.testBit(flat)) {
            QModelIndex idx = index(destinationRow, destinationColumn, parent);
            setItemData(idx, data.at(j));
            isWrittenTo.setBit(flat);
        }
    }

    return true;
}

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void QAbstractItemModel::beginInsertRows	(	const QModelIndex &	parent,
		int	first,
		int	last
	)			[protected]

Begins a row insertion operation.

When reimplementing insertRows() in a subclass, you must call this function before inserting data into the model's underlying data store.

The parent index corresponds to the parent into which the new rows are inserted; first and last are the row numbers that the new rows will have after they have been inserted.

80% modelview-begin-insert-rows.png Inserting rows Specify the first and last row numbers for the span of rows you want to insert into an item in a model.

For example, as shown in the diagram, we insert three rows before row 2, so first is 2 and last is 4:

    beginInsertRows(parent, 2, 4);

This inserts the three new rows as rows 2, 3, and 4. modelview-begin-append-rows.png Appending rows To append rows, insert them after the last row.

For example, as shown in the diagram, we append two rows to a collection of 4 existing rows (ending in row 3), so first is 4 and last is 5:

    beginInsertRows(parent, 4, 5);

This appends the two new rows as rows 4 and 5.

See also:

endInsertRows()

Definition at line 1952 of file qabstractitemmodel.cpp.

References d, emit, QObject::parent(), and rowsAboutToBeInserted().

Referenced by qdesigner_internal::ConnectionModel::aboutToAddConnection(), qdesigner_internal::ResourceModel::addFiles(), qdesigner_internal::ResourceModel::addNewPrefix(), PhraseModel::addPhrase(), PiecesModel::addPiece(), QTreeModel::beginInsertItems(), PiecesModel::dropMimeData(), QListModel::insert(), QTreeModel::insertRows(), QStringListModel::insertRows(), QCalendarModel::insertRows(), QTableModel::insertRows(), QListModel::insertRows(), QSqlTableModel::insertRows(), QDBusModel::refresh(), and QSqlQueryModel::setQuery().

{
    Q_ASSERT(first >= 0);
    Q_ASSERT(last >= first);
    Q_D(QAbstractItemModel);
    d->changes.push(QAbstractItemModelPrivate::Change(parent, first, last));
    emit rowsAboutToBeInserted(parent, first, last);
    d->rowsAboutToBeInserted(parent, first, last);
}

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void QAbstractItemModel::endInsertRows

(

)

[protected]

Ends a row insertion operation.

When reimplementing insertRows() in a subclass, you must call this function after inserting data into the model's underlying data store.

See also:

beginInsertRows()

Definition at line 1971 of file qabstractitemmodel.cpp.

References d, emit, QAbstractItemModelPrivate::Change::first, QAbstractItemModelPrivate::Change::last, QAbstractItemModelPrivate::Change::parent, and rowsInserted().

Referenced by qdesigner_internal::ResourceModel::addFiles(), qdesigner_internal::ResourceModel::addNewPrefix(), PhraseModel::addPhrase(), PiecesModel::addPiece(), qdesigner_internal::ConnectionModel::connectionAdded(), PiecesModel::dropMimeData(), QTreeModel::endInsertItems(), QListModel::insert(), QTreeModel::insertRows(), QStringListModel::insertRows(), QCalendarModel::insertRows(), QTableModel::insertRows(), QSqlTableModel::insertRows(), QListModel::insertRows(), QDBusModel::refresh(), and QSqlQueryModel::setQuery().

{
    Q_D(QAbstractItemModel);
    QAbstractItemModelPrivate::Change change = d->changes.pop();
    d->rowsInserted(change.parent, change.first, change.last);
    emit rowsInserted(change.parent, change.first, change.last);
}

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void QAbstractItemModel::beginRemoveRows	(	const QModelIndex &	parent,
		int	first,
		int	last
	)			[protected]

Begins a row removal operation.

When reimplementing removeRows() in a subclass, you must call this function before removing data from the model's underlying data store.

The parent index corresponds to the parent from which the new rows are removed; first and last are the row numbers of the rows to be removed.

80% modelview-begin-remove-rows.png Removing rows Specify the first and last row numbers for the span of rows you want to remove from an item in a model.

For example, as shown in the diagram, we remove the two rows from row 2 to row 3, so first is 2 and last is 3:

    beginRemoveRows(parent, 2, 3);

See also:

endRemoveRows()

Definition at line 2004 of file qabstractitemmodel.cpp.

References d, emit, QObject::parent(), and rowsAboutToBeRemoved().

Referenced by qdesigner_internal::ConnectionModel::aboutToRemoveConnection(), PiecesModel::addPieces(), QTreeModel::beginRemoveItems(), qdesigner_internal::ResourceModel::deleteItem(), QDBusModel::refresh(), QListModel::remove(), PhraseModel::removePhrase(), QCalendarModel::removeRows(), PiecesModel::removeRows(), QTreeModel::removeRows(), QStringListModel::removeRows(), QTableModel::removeRows(), QListModel::removeRows(), QSqlQueryModel::setQuery(), and QListModel::take().

{
    Q_ASSERT(first >= 0);
    Q_ASSERT(last >= first);
    Q_D(QAbstractItemModel);
    d->changes.push(QAbstractItemModelPrivate::Change(parent, first, last));
    emit rowsAboutToBeRemoved(parent, first, last);
    d->rowsAboutToBeRemoved(parent, first, last);
}

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void QAbstractItemModel::endRemoveRows

(

)

[protected]

Ends a row removal operation.

When reimplementing removeRows() in a subclass, you must call this function after removing data from the model's underlying data store.

See also:

beginRemoveRows()

Definition at line 2023 of file qabstractitemmodel.cpp.

References d, emit, QAbstractItemModelPrivate::Change::first, QAbstractItemModelPrivate::Change::last, QAbstractItemModelPrivate::Change::parent, and rowsRemoved().

Referenced by PiecesModel::addPieces(), qdesigner_internal::ConnectionModel::connectionRemoved(), qdesigner_internal::ResourceModel::deleteItem(), QTreeModel::endRemoveItems(), QDBusModel::refresh(), QListModel::remove(), PhraseModel::removePhrase(), QCalendarModel::removeRows(), PiecesModel::removeRows(), QTreeModel::removeRows(), QStringListModel::removeRows(), QTableModel::removeRows(), QListModel::removeRows(), QSqlQueryModel::setQuery(), and QListModel::take().

{
    Q_D(QAbstractItemModel);
    QAbstractItemModelPrivate::Change change = d->changes.pop();
    d->rowsRemoved(change.parent, change.first, change.last);
    emit rowsRemoved(change.parent, change.first, change.last);
}

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void QAbstractItemModel::beginInsertColumns	(	const QModelIndex &	parent,
		int	first,
		int	last
	)			[protected]

Begins a column insertion operation.

When reimplementing insertColumns() in a subclass, you must call this function before inserting data into the model's underlying data store.

The parent index corresponds to the parent into which the new columns are inserted; first and last are the column numbers of the new columns will have after they have been inserted.

80% modelview-begin-insert-columns.png Inserting columns Specify the first and last column numbers for the span of columns you want to insert into an item in a model.

For example, as shown in the diagram, we insert three columns before column 4, so first is 4 and last is 6:

    beginInsertColumns(parent, 4, 6);

This inserts the three new columns as columns 4, 5, and 6. modelview-begin-append-columns.png Appending columns To append columns, insert them after the last column.

For example, as shown in the diagram, we append three columns to a collection of six existing columns (ending in column 5), so first is 6 and last is 8:

    beginInsertColumns(parent, 6, 8);

This appends the two new columns as columns 6, 7, and 8.

See also:

endInsertColumns()

Definition at line 2068 of file qabstractitemmodel.cpp.

References columnsAboutToBeInserted(), d, emit, and QObject::parent().

Referenced by QTableModel::insertColumns(), QCalendarModel::insertColumns(), QTreeModel::insertColumns(), QSqlQueryModel::insertColumns(), QTreeModel::setColumnCount(), and QSqlQueryModel::setQuery().

{
    Q_ASSERT(first >= 0);
    Q_ASSERT(last >= first);
    Q_D(QAbstractItemModel);
    d->changes.push(QAbstractItemModelPrivate::Change(parent, first, last));
    emit columnsAboutToBeInserted(parent, first, last);
    d->columnsAboutToBeInserted(parent, first, last);
}

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void QAbstractItemModel::endInsertColumns

(

)

[protected]

Ends a column insertion operation.

When reimplementing insertColumns() in a subclass, you must call this function after inserting data into the model's underlying data store.

See also:

beginInsertColumns()

Definition at line 2087 of file qabstractitemmodel.cpp.

References columnsInserted(), d, emit, QAbstractItemModelPrivate::Change::first, QAbstractItemModelPrivate::Change::last, and QAbstractItemModelPrivate::Change::parent.

Referenced by QTableModel::insertColumns(), QCalendarModel::insertColumns(), QTreeModel::insertColumns(), QSqlQueryModel::insertColumns(), QTreeModel::setColumnCount(), and QSqlQueryModel::setQuery().

{
    Q_D(QAbstractItemModel);
    QAbstractItemModelPrivate::Change change = d->changes.pop();
    d->columnsInserted(change.parent, change.first, change.last);
    emit columnsInserted(change.parent, change.first, change.last);
}

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void QAbstractItemModel::beginRemoveColumns	(	const QModelIndex &	parent,
		int	first,
		int	last
	)			[protected]

Begins a column removal operation.

When reimplementing removeColumns() in a subclass, you must call this function before removing data from the model's underlying data store.

The parent index corresponds to the parent from which the new columns are removed; first and last are the column numbers of the first and last columns to be removed.

80% modelview-begin-remove-columns.png Removing columns Specify the first and last column numbers for the span of columns you want to remove from an item in a model.

For example, as shown in the diagram, we remove the three columns from column 4 to column 6, so first is 4 and last is 6:

    beginRemoveColumns(parent, 4, 6);

See also:

endRemoveColumns()

Definition at line 2120 of file qabstractitemmodel.cpp.

References columnsAboutToBeRemoved(), d, emit, and QObject::parent().

Referenced by QCalendarModel::removeColumns(), QSqlQueryModel::removeColumns(), QTableModel::removeColumns(), and QTreeModel::setColumnCount().

{
    Q_ASSERT(first >= 0);
    Q_ASSERT(last >= first);
    Q_D(QAbstractItemModel);
    d->changes.push(QAbstractItemModelPrivate::Change(parent, first, last));
    emit columnsAboutToBeRemoved(parent, first, last);
    d->columnsAboutToBeRemoved(parent, first, last);
}

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void QAbstractItemModel::endRemoveColumns

(

)

[protected]

Ends a column removal operation.

When reimplementing removeColumns() in a subclass, you must call this function after removing data from the model's underlying data store.

See also:

beginRemoveColumns()

Definition at line 2139 of file qabstractitemmodel.cpp.

References columnsRemoved(), d, emit, QAbstractItemModelPrivate::Change::first, QAbstractItemModelPrivate::Change::last, and QAbstractItemModelPrivate::Change::parent.

Referenced by QCalendarModel::removeColumns(), QSqlQueryModel::removeColumns(), QTableModel::removeColumns(), and QTreeModel::setColumnCount().

{
    Q_D(QAbstractItemModel);
    QAbstractItemModelPrivate::Change change = d->changes.pop();
    d->columnsRemoved(change.parent, change.first, change.last);
    emit columnsRemoved(change.parent, change.first, change.last);
}

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void QAbstractItemModel::reset

(

)

[protected]

Resets the model to its original state in any attached views.

When a model is reset it means that any previous data reported from the model is now invalid and has to be queried for again.

When a model radically changes its data it can sometimes be easier to just call this function rather than emit dataChanged() to inform other components when the underlying data source, or its structure, has changed.

See also:

modelAboutToBeReset(), modelReset()

Definition at line 2160 of file qabstractitemmodel.cpp.

References d, emit, modelAboutToBeReset(), and modelReset().

Referenced by QStandardItemModel::clear(), QTreeModel::clear(), QListModel::clear(), QTableModel::clearContents(), MessageModel::clearContextList(), ContextModel::clearContextList(), QCompletionModel::filter(), PhraseModel::removePhrases(), QCompletionModel::setFiltered(), ImageModel::setImage(), qdesigner_internal::QPropertyEditorModel::setInitialInput(), qdesigner_internal::FlagBoxModel::setItems(), QSqlQueryModel::setQuery(), QSortFilterProxyModel::setSourceModel(), QStringListModel::setStringList(), QUndoModel::stackChanged(), ContextModel::updateAll(), and MessageModel::updateAll().

{
    Q_D(QAbstractItemModel);
    emit modelAboutToBeReset();
    d->reset();
    emit modelReset();
}

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void QAbstractItemModel::changePersistentIndex	(	const QModelIndex &	from,
		const QModelIndex &	to
	)			[protected]

Changes the QPersistentModelIndex that is equal to the given from model index to the given to model index.

If no persistent model index equal to the given from model index was found, nothing is changed.

See also:

persistentIndexList(), changePersistentIndexList()

Definition at line 2177 of file qabstractitemmodel.cpp.

References QList< T >::at(), QList< T >::count(), d, i, and QPersistentModelIndexData::index.

Referenced by QStandardItemPrivate::sortChildren(), and QTreeModel::sortItems().

{
    // ### optimize (use QMap ?)
    Q_D(QAbstractItemModel);
    QList<QPersistentModelIndexData*> persistentIndexes = d->persistent.indexes;
    for (int i = 0; i < persistentIndexes.count(); ++i) {
        if (persistentIndexes.at(i)->index == from) {
            persistentIndexes.at(i)->index = to;
            break;
        }
    }
}

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void QAbstractItemModel::changePersistentIndexList	(	const QModelIndexList &	from,
		const QModelIndexList &	to
	)			[protected]

Since:

4.1

Changes the QPersistentModelIndexes that is equal to the indexes in the given from model index list to the given to model index list.

If no persistent model indexes equal to the indexes in the given from model index list was found, nothing is changed.

See also:

persistentIndexList(), changePersistentIndex()

Definition at line 2201 of file qabstractitemmodel.cpp.

References QList< T >::at(), QList< T >::count(), d, i, QPersistentModelIndexData::index, and j.

Referenced by QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), QTableModel::setItem(), QTableModel::sort(), and QListModel::sort().

{
    // ### optimize (use QMap ?)
    Q_D(QAbstractItemModel);
    QList<QPersistentModelIndexData*> persistentIndexes = d->persistent.indexes;
    QBitArray changed(persistentIndexes.count());
    for (int i = 0; i < from.count(); ++i) {
        for (int j = 0; j < persistentIndexes.count(); ++j) {
            if (!changed.at(j) && persistentIndexes.at(j)->index == from.at(i)) {
                persistentIndexes.at(j)->index = to.at(i);
                changed.setBit(j);
                break;
            }
        }
    }
}

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QModelIndexList QAbstractItemModel::persistentIndexList

(

)

const [protected]

Since:

4.2

Returns the list of indexes stored as persistent indexes in the model.

Definition at line 2224 of file qabstractitemmodel.cpp.

References QList< T >::append(), QList< T >::at(), QList< T >::count(), d, i, and QPersistentModelIndexData::index.

Referenced by QListModel::ensureSorted(), QTreeModel::ensureSorted(), QTableModel::ensureSorted(), QTableModel::setItem(), and QStandardItemPrivate::sortChildren().

{
    Q_D(const QAbstractItemModel);
    QList<QPersistentModelIndexData*> persistentIndexes = d->persistent.indexes;
    QModelIndexList result;
    for (int i = 0; i < persistentIndexes.count(); ++i)
        result.append(persistentIndexes.at(i)->index);
    return result;
}

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---

Friends And Related Function Documentation

friend class QPersistentModelIndexData [friend]

Definition at line 131 of file qabstractitemmodel.h.

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The documentation for this class was generated from the following files:

• src/corelib/kernel/qabstractitemmodel.h
• src/corelib/kernel/qabstractitemmodel.cpp

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