Qt
Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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QListModel Class Reference

#include <qlistwidget_p.h>

Inheritance diagram for QListModel:
Collaboration diagram for QListModel:

Public Member Functions

 QListModel (QListWidget *parent)
 ~QListModel ()
QListWidget * view () const
void clear ()
QListWidgetItem * at (int row) const
void insert (int row, QListWidgetItem *item)
void insert (int row, const QStringList &items)
void remove (QListWidgetItem *item)
QListWidgetItem * take (int row)
void move (int srcRow, int dstRow)
int rowCount (const QModelIndex &parent=QModelIndex()) const override
 Returns the number of rows under the given parent.
QModelIndex index (const QListWidgetItem *item) const
QModelIndex index (int row, int column=0, const QModelIndex &parent=QModelIndex()) const override
 Returns the index of the data in row and column with parent.
QVariant data (const QModelIndex &index, int role=Qt::DisplayRole) const override
 Returns the data stored under the given role for the item referred to by the index.
bool setData (const QModelIndex &index, const QVariant &value, int role) override
 Sets the role data for the item at index to value.
bool clearItemData (const QModelIndex &index) override
QMap< int, QVariant > itemData (const QModelIndex &index) const override
 Returns a map with values for all predefined roles in the model for the item at the given index.
bool insertRows (int row, int count=1, const QModelIndex &parent=QModelIndex()) override
bool removeRows (int row, int count=1, const QModelIndex &parent=QModelIndex()) override
bool moveRows (const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild) override
Qt::ItemFlags flags (const QModelIndex &index) const override
 \reimp
void sort (int column, Qt::SortOrder order) override
void ensureSorted (int column, Qt::SortOrder order, int start, int end)
void itemChanged (QListWidgetItem *item, const QList< int > &roles=QList< int >())
QStringList mimeTypes () const override
 Returns the list of allowed MIME types.
QMimeData * mimeData (const QModelIndexList &indexes) const override
 Returns an object that contains serialized items of data corresponding to the list of indexes specified.
QMimeData * internalMimeData () const
Public Member Functions inherited from QAbstractListModel
 QAbstractListModel (QObject *parent=nullptr)
 Constructs an abstract list model with the given parent.
 ~QAbstractListModel ()
 Destroys the abstract list model.
QModelIndex sibling (int row, int column, const QModelIndex &idx) const override
 \reimp
bool dropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override
 \reimp
QObject * parent () const
 Returns a pointer to the parent object.
Public Member Functions inherited from QAbstractItemModel
 QAbstractItemModel (QObject *parent=nullptr)
 Constructs an abstract item model with the given parent.
virtual ~QAbstractItemModel ()
 Destroys the abstract item model.
Q_INVOKABLE bool 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}.
virtual Q_INVOKABLE QVariant headerData (int section, Qt::Orientation orientation, int role=Qt::DisplayRole) const
 Returns the data for the given role and section in the header with the specified orientation.
virtual bool setHeaderData (int section, Qt::Orientation orientation, const QVariant &value, int role=Qt::EditRole)
 Sets the data for the given role and section in the header with the specified orientation to the value supplied.
virtual bool setItemData (const QModelIndex &index, const QMap< int, QVariant > &roles)
 Sets the role data for the item at index to the associated value in roles, for every Qt::ItemDataRole.
virtual bool canDropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) const
 Returns {true} if a model can accept a drop of the data.
virtual Qt::DropActions supportedDropActions () const
virtual Qt::DropActions supportedDragActions () const
 Returns the actions supported by the data in this model.
Q_INVOKABLE Q_REVISION (6, 4) virtual bool insertRows(int row
Q_INVOKABLE Q_REVISION (6, 4) virtual bool insertColumns(int column
Q_INVOKABLE Q_REVISION (6, 4) virtual bool removeRows(int row
Q_INVOKABLE Q_REVISION (6, 4) virtual bool removeColumns(int column
Q_INVOKABLE Q_REVISION (6, 4) virtual bool moveRows(const QModelIndex &sourceParent
Q_INVOKABLE Q_REVISION (6, 4) virtual bool moveColumns(const QModelIndex &sourceParent
Q_INVOKABLE Q_REVISION (6, 4) inline bool insertRow(int row
Q_INVOKABLE Q_REVISION (6, 4) inline bool insertColumn(int column
Q_INVOKABLE Q_REVISION (6, 4) inline bool removeRow(int row
Q_INVOKABLE Q_REVISION (6, 4) inline bool removeColumn(int column
Q_INVOKABLE Q_REVISION (6, 4) inline bool moveRow(const QModelIndex &sourceParent
Q_INVOKABLE Q_REVISION (6, 4) inline bool moveColumn(const QModelIndex &sourceParent
virtual Q_INVOKABLE void fetchMore (const QModelIndex &parent)
 Fetches any available data for the items with the parent specified by the parent index.
virtual Q_INVOKABLE bool canFetchMore (const QModelIndex &parent) const
 Returns {true} if there is more data available for parent; otherwise returns {false}.
Q_INVOKABLE Q_REVISION (6, 4) virtual void sort(int column
virtual QModelIndex buddy (const QModelIndex &index) const
 Returns a model index for the buddy of the item represented by index.
virtual Q_INVOKABLE QModelIndexList match (const QModelIndex &start, int role, const QVariant &value, int hits=1, Qt::MatchFlags flags=Qt::MatchFlags(Qt::MatchStartsWith|Qt::MatchWrap)) const
 Returns a list of indexes for the items in the column of the start index where data stored under the given role matches the specified value.
virtual QSize span (const QModelIndex &index) const
 Returns the row and column span of the item represented by index.
virtual QHash< int, QByteArray > roleNames () const
bool checkIndex (const QModelIndex &index, CheckIndexOptions options=CheckIndexOption::NoOption) const
virtual void multiData (const QModelIndex &index, QModelRoleDataSpan roleDataSpan) const
QObject * parent () const
 Returns a pointer to the parent object.
Public Member Functions inherited from QObject
Q_INVOKABLE QObject (QObject *parent=nullptr)
 Constructs an object with parent object parent.
virtual ~QObject ()
 Destroys the object, deleting all its child objects.
virtual bool event (QEvent *event)
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
virtual bool eventFilter (QObject *watched, QEvent *event)
 Filters events if this object has been installed as an event filter for the watched object.
QString objectName () const
Q_WEAK_OVERLOAD void setObjectName (const QString &name)
 Sets the object's name to name.
void setObjectName (QAnyStringView name)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
QBindable< QString > bindableObjectName ()
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false.
bool isWindowType () const
 Returns true if the object is a window; otherwise returns false.
bool isQuickItemType () const
 Returns true if the object is a QQuickItem; otherwise returns false.
bool isQmlObjectType () const
 Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
bool signalsBlocked () const noexcept
 Returns true if signals are blocked; otherwise returns false.
bool blockSignals (bool b) noexcept
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
QThread * thread () const
 Returns the thread in which the object lives.
bool moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
 Changes the thread affinity for this object and its children and returns true on success.
int startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
 This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
int startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
void killTimer (int id)
 Kills the timer with timer identifier, id.
void killTimer (Qt::TimerId id)
template<typename T>
T findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
template<typename T>
QList< T > findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
template<typename T>
T findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
template<typename T>
QList< T > findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
const QObjectList & children () const
 Returns a list of child objects.
void setParent (QObject *parent)
 Makes the object a child of parent.
void installEventFilter (QObject *filterObj)
 Installs an event filter filterObj on this object.
void removeEventFilter (QObject *obj)
 Removes an event filter object obj from this object.
QMetaObject::Connection connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const
bool disconnect (const QObject *receiver, const char *member=nullptr) const
void dumpObjectTree () const
 Dumps a tree of children to the debug output.
void dumpObjectInfo () const
 Dumps information about signal connections, etc.
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value.
bool setProperty (const char *name, QVariant &&value)
QVariant property (const char *name) const
 Returns the value of the object's name property.
QList< QByteArray > dynamicPropertyNames () const
QBindingStorage * bindingStorage ()
const QBindingStorage * bindingStorage () const
QObject * parent () const
 Returns a pointer to the parent object.
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false.

Static Public Member Functions

static bool itemLessThan (const std::pair< QListWidgetItem *, int > &left, const std::pair< QListWidgetItem *, int > &right)
static bool itemGreaterThan (const std::pair< QListWidgetItem *, int > &left, const std::pair< QListWidgetItem *, int > &right)
static QList< QListWidgetItem * >::iterator sortedInsertionIterator (const QList< QListWidgetItem * >::iterator &begin, const QList< QListWidgetItem * >::iterator &end, Qt::SortOrder order, QListWidgetItem *item)
Static Public Member Functions inherited from QObject
static QMetaObject::Connection connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 \threadsafe
static QMetaObject::Connection connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType *context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 \threadsafe
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static bool disconnect (const QMetaObject::Connection &)
 Disconnect a connection.
template<typename Func1, typename Func2>
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object *receiver, Func2 slot)
template<typename Func1>
static bool disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, const QObject *receiver, void **zero)

Friends

class QListWidget

Additional Inherited Members

Public Types inherited from QAbstractItemModel
enum  LayoutChangeHint { NoLayoutChangeHint , VerticalSortHint , HorizontalSortHint }
 This enum describes the way the model changes layout. More...
enum class  CheckIndexOption { NoOption = 0x0000 , IndexIsValid = 0x0001 , DoNotUseParent = 0x0002 , ParentIsInvalid = 0x0004 }
Public Slots inherited from QAbstractItemModel
virtual bool submit ()
 Lets the model know that it should submit cached information to permanent storage.
virtual void revert ()
 Lets the model know that it should discard cached information.
Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
Signals inherited from QAbstractItemModel
void dataChanged (const QModelIndex &topLeft, const QModelIndex &bottomRight, const QList< int > &roles=QList< int >())
 This signal is emitted whenever the data in an existing item changes.
void headerDataChanged (Qt::Orientation orientation, int first, int last)
 This signal is emitted whenever a header is changed.
void layoutChanged (const QList< QPersistentModelIndex > &parents=QList< QPersistentModelIndex >(), QAbstractItemModel::LayoutChangeHint hint=QAbstractItemModel::NoLayoutChangeHint)
void layoutAboutToBeChanged (const QList< QPersistentModelIndex > &parents=QList< QPersistentModelIndex >(), QAbstractItemModel::LayoutChangeHint hint=QAbstractItemModel::NoLayoutChangeHint)
void rowsAboutToBeInserted (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted just before rows are inserted into the model.
void rowsInserted (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted after rows have been inserted into the model.
void rowsAboutToBeRemoved (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted just before rows are removed from the model.
void rowsRemoved (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted after rows have been removed from the model.
void columnsAboutToBeInserted (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted just before columns are inserted into the model.
void columnsInserted (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted after columns have been inserted into the model.
void columnsAboutToBeRemoved (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted just before columns are removed from the model.
void columnsRemoved (const QModelIndex &parent, int first, int last, QPrivateSignal)
 This signal is emitted after columns have been removed from the model.
void modelAboutToBeReset (QPrivateSignal)
void modelReset (QPrivateSignal)
void rowsAboutToBeMoved (const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow, QPrivateSignal)
void rowsMoved (const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow, QPrivateSignal)
void columnsAboutToBeMoved (const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationColumn, QPrivateSignal)
void columnsMoved (const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationColumn, QPrivateSignal)
Signals inherited from QObject
void destroyed (QObject *=nullptr)
 This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
void objectNameChanged (const QString &objectName, QPrivateSignal)
 This signal is emitted after the object's name has been changed.
Public Attributes inherited from QAbstractItemModel
Q_INVOKABLE int count
Q_INVOKABLE int const QModelIndex & parent = QModelIndex())
 Returns the parent of the model item with the given index.
Q_INVOKABLE int sourceRow
Q_INVOKABLE int int count
Q_INVOKABLE int int const QModelIndex & destinationParent
Q_INVOKABLE int int const QModelIndex int destinationChild
Q_INVOKABLE int sourceColumn
Q_INVOKABLE const QModelIndex & parent = QModelIndex())
Q_INVOKABLE int const QModelIndex & destinationParent
Q_INVOKABLE int const QModelIndex int destinationChild
Q_INVOKABLE Qt::SortOrder order = Qt::AscendingOrder)
Protected Slots inherited from QAbstractItemModel
virtual void resetInternalData ()
Protected Member Functions inherited from QAbstractListModel
 QAbstractListModel (QAbstractItemModelPrivate &dd, QObject *parent)
Protected Member Functions inherited from QAbstractItemModel
 QAbstractItemModel (QAbstractItemModelPrivate &dd, QObject *parent=nullptr)
QModelIndex createIndex (int row, int column, const void *data=nullptr) const
 Creates a model index for the given row and column with the internal pointer ptr.
QModelIndex createIndex (int row, int column, quintptr id) const
 Creates a model index for the given row and column with the internal identifier, id.
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)
 Begins a row insertion operation.
void endInsertRows ()
 Ends a row insertion operation.
void beginRemoveRows (const QModelIndex &parent, int first, int last)
 Begins a row removal operation.
void endRemoveRows ()
 Ends a row removal operation.
bool beginMoveRows (const QModelIndex &sourceParent, int sourceFirst, int sourceLast, const QModelIndex &destinationParent, int destinationRow)
void endMoveRows ()
 Ends a row move operation.
void beginInsertColumns (const QModelIndex &parent, int first, int last)
 Begins a column insertion operation.
void endInsertColumns ()
 Ends a column insertion operation.
void beginRemoveColumns (const QModelIndex &parent, int first, int last)
 Begins a column removal operation.
void endRemoveColumns ()
 Ends a column removal operation.
bool beginMoveColumns (const QModelIndex &sourceParent, int sourceFirst, int sourceLast, const QModelIndex &destinationParent, int destinationColumn)
 Begins a column move operation.
void endMoveColumns ()
 Ends a column move operation.
void beginResetModel ()
 Begins a model reset operation.
void endResetModel ()
 Completes a model reset operation.
void changePersistentIndex (const QModelIndex &from, const QModelIndex &to)
 Changes the QPersistentModelIndex that is equal to the given from model index to the given to model index.
void changePersistentIndexList (const QModelIndexList &from, const QModelIndexList &to)
QModelIndexList persistentIndexList () const
Protected Member Functions inherited from QObject
QObject * sender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
int senderSignalIndex () const
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal.
bool isSignalConnected (const QMetaMethod &signal) const
virtual void timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object.
virtual void childEvent (QChildEvent *event)
 This event handler can be reimplemented in a subclass to receive child events.
virtual void customEvent (QEvent *event)
 This event handler can be reimplemented in a subclass to receive custom events.
virtual void connectNotify (const QMetaMethod &signal)
virtual void disconnectNotify (const QMetaMethod &signal)
 QObject (QObjectPrivate &dd, QObject *parent=nullptr)
Protected Attributes inherited from QObject
QScopedPointer< QObjectData > d_ptr
Properties inherited from QObject
QString objectName
 the name of this object
Related Symbols inherited from QObject
 Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
 \macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 45 of file qlistwidget_p.h.

Constructor & Destructor Documentation

◆ QListModel()

QT_BEGIN_INCLUDE_NAMESPACE QT_END_INCLUDE_NAMESPACE QListModel::QListModel ( QListWidget * parent)

Definition at line 26 of file qlistwidget.cpp.

◆ ~QListModel()

QListModel::~QListModel ( )

Definition at line 31 of file qlistwidget.cpp.

Member Function Documentation

◆ at()

QListWidgetItem * QListModel::at ( int row) const

Definition at line 50 of file qlistwidget.cpp.

◆ clear()

void QListModel::clear ( )

Definition at line 36 of file qlistwidget.cpp.

◆ clearItemData()

bool QListModel::clearItemData ( const QModelIndex & index)
overridevirtual
Since
6.0 Removes the data stored in all the roles for the given index. Returns {true} if successful; otherwise returns {false}. The dataChanged() signal should be emitted if the data was successfully removed. The base class implementation returns {false}
See also
data(), itemData(), setData(), setItemData()

Reimplemented from QAbstractItemModel.

Definition at line 194 of file qlistwidget.cpp.

◆ data()

QVariant QListModel::data ( const QModelIndex & index,
int role = Qt::DisplayRole ) const
overridevirtual

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

Note
If you do not have a value to return, return an invalid (default-constructed) QVariant.
See also
Qt::ItemDataRole, setData(), headerData()

Implements QAbstractItemModel.

Definition at line 179 of file qlistwidget.cpp.

◆ ensureSorted()

void QListModel::ensureSorted ( int column,
Qt::SortOrder order,
int start,
int end )

This function assumes that all items in the model except the items that are between (inclusive) start and end are sorted.

Check if range [start,end] is already in sorted position in list. Take for this the assumption, that outside [start,end] the list is already sorted. Therefore the sorted check has to be extended to the first element that is known to be sorted before the range [start, end], which is (start-1) and the first element after the range [start, end], which is (end+2) due to end being included.

Definition at line 332 of file qlistwidget.cpp.

◆ flags()

Qt::ItemFlags QListModel::flags ( const QModelIndex & index) const
overridevirtual

\reimp

Reimplemented from QAbstractListModel.

Definition at line 289 of file qlistwidget.cpp.

◆ index() [1/2]

QModelIndex QListModel::index ( const QListWidgetItem * item) const

Definition at line 153 of file qlistwidget.cpp.

◆ index() [2/2]

QModelIndex QListModel::index ( int row,
int column = 0,
const QModelIndex & parent = QModelIndex() ) const
overridevirtual

Returns the index of the data in row and column with parent.

See also
parent()

Reimplemented from QAbstractListModel.

Definition at line 172 of file qlistwidget.cpp.

◆ insert() [1/2]

void QListModel::insert ( int row,
const QStringList & items )

Definition at line 92 of file qlistwidget.cpp.

◆ insert() [2/2]

void QListModel::insert ( int row,
QListWidgetItem * item )

Definition at line 68 of file qlistwidget.cpp.

◆ insertRows()

bool QListModel::insertRows ( int row,
int count = 1,
const QModelIndex & parent = QModelIndex() )
override

Definition at line 221 of file qlistwidget.cpp.

◆ internalMimeData()

QMimeData * QListModel::internalMimeData ( ) const

Definition at line 397 of file qlistwidget.cpp.

◆ itemChanged()

void QListModel::itemChanged ( QListWidgetItem * item,
const QList< int > & roles = QList<int>() )

Definition at line 383 of file qlistwidget.cpp.

◆ itemData()

QMap< int, QVariant > QListModel::itemData ( const QModelIndex & index) const
overridevirtual

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

Reimplement 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()

Reimplemented from QAbstractItemModel.

Definition at line 208 of file qlistwidget.cpp.

◆ itemGreaterThan()

bool QListModel::itemGreaterThan ( const std::pair< QListWidgetItem *, int > & left,
const std::pair< QListWidgetItem *, int > & right )
static

Definition at line 367 of file qlistwidget.cpp.

◆ itemLessThan()

bool QListModel::itemLessThan ( const std::pair< QListWidgetItem *, int > & left,
const std::pair< QListWidgetItem *, int > & right )
static

Definition at line 361 of file qlistwidget.cpp.

◆ mimeData()

QMimeData * QListModel::mimeData ( const QModelIndexList & indexes) const
overridevirtual

Returns an object that contains serialized items of data corresponding to the list of indexes specified.

The format used to describe the encoded data is obtained from the mimeTypes() function. This default implementation uses the default MIME type returned by the default implementation of mimeTypes(). If you reimplement mimeTypes() in your custom model to return more MIME types, reimplement this function to make use of them.

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

See also
mimeTypes(), dropMimeData()

Reimplemented from QAbstractItemModel.

Definition at line 402 of file qlistwidget.cpp.

◆ mimeTypes()

QStringList QListModel::mimeTypes ( ) const
overridevirtual

Returns the list of allowed MIME types.

By default, the built-in models and views use an internal MIME type: {application/x-qabstractitemmodeldatalist}.

When implementing drag and drop support in a custom model, if you will return data in formats other than the default internal MIME type, reimplement this function to return your list of MIME types.

If you reimplement this function in your custom model, you must also reimplement the member functions that call it: mimeData() and dropMimeData().

See also
mimeData(), dropMimeData()

Reimplemented from QAbstractItemModel.

Definition at line 389 of file qlistwidget.cpp.

◆ move()

void QListModel::move ( int srcRow,
int dstRow )

Definition at line 133 of file qlistwidget.cpp.

◆ moveRows()

bool QListModel::moveRows ( const QModelIndex & sourceParent,
int sourceRow,
int count,
const QModelIndex & destinationParent,
int destinationChild )
override
Since
5.13 \reimp

Definition at line 262 of file qlistwidget.cpp.

◆ remove()

void QListModel::remove ( QListWidgetItem * item)

Definition at line 55 of file qlistwidget.cpp.

◆ removeRows()

bool QListModel::removeRows ( int row,
int count = 1,
const QModelIndex & parent = QModelIndex() )
override

Definition at line 241 of file qlistwidget.cpp.

◆ rowCount()

int QListModel::rowCount ( const QModelIndex & parent = QModelIndex()) const
overridevirtual

Returns the number of rows under the given parent.

When the parent is valid it means that rowCount is returning the number of children of parent.

Note
When implementing a table based model, rowCount() should return 0 when the parent is valid.
See also
columnCount()

Implements QAbstractItemModel.

Definition at line 148 of file qlistwidget.cpp.

◆ setData()

bool QListModel::setData ( const QModelIndex & index,
const QVariant & value,
int role )
overridevirtual

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.

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

Reimplemented from QAbstractItemModel.

Definition at line 186 of file qlistwidget.cpp.

◆ sort()

void QListModel::sort ( int column,
Qt::SortOrder order )
override

Definition at line 296 of file qlistwidget.cpp.

◆ sortedInsertionIterator()

QList< QListWidgetItem * >::iterator QListModel::sortedInsertionIterator ( const QList< QListWidgetItem * >::iterator & begin,
const QList< QListWidgetItem * >::iterator & end,
Qt::SortOrder order,
QListWidgetItem * item )
static

Definition at line 373 of file qlistwidget.cpp.

◆ take()

QListWidgetItem * QListModel::take ( int row)

Definition at line 120 of file qlistwidget.cpp.

◆ view()

QListWidget * QListModel::view ( ) const
inline

Definition at line 54 of file qlistwidget_p.h.

◆ QListWidget

friend class QListWidget
friend

Definition at line 48 of file qlistwidget_p.h.

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