#include <qtreewidget_p.h>

Inheritance diagram for QTreeModel:

Collaboration diagram for QTreeModel:

Classes
struct	SkipSorting

Public Member Functions
	QTreeModel (int columns=0, QTreeWidget *parent=nullptr)

	~QTreeModel ()

QTreeWidget *	view () const

void	clear ()

void	setColumnCount (int columns)

QTreeWidgetItem *	item (const QModelIndex &index) const

void	itemChanged (QTreeWidgetItem *item)

QModelIndex	index (const QTreeWidgetItem *item, int column) const

QModelIndex	index (int row, int column, const QModelIndex &parent) const override

QModelIndex	parent (const QModelIndex &child) const override

int	rowCount (const QModelIndex &parent) const override

int	columnCount (const QModelIndex &parent=QModelIndex()) const override

bool	hasChildren (const QModelIndex &parent) const override
	Returns {true} if parent has any children; otherwise returns {false}.

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

bool	setData (const QModelIndex &index, const QVariant &value, int role) override

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.

QVariant	headerData (int section, Qt::Orientation orientation, int role) const override

bool	setHeaderData (int section, Qt::Orientation orientation, const QVariant &value, int role) 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, const QModelIndex &parent)

bool	insertRows (int row, int count, const QModelIndex &) override

bool	insertColumns (int column, int count, const QModelIndex &) override

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

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.

bool	dropMimeData (const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override
	Handles the data supplied by a drag and drop operation that ended with the given action.

Qt::DropActions	supportedDropActions () const override

QMimeData *	internalMimeData () const

QModelIndex	createIndexFromItem (int row, int col, QTreeWidgetItem *item) const

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 QModelIndex	sibling (int row, int column, const QModelIndex &idx) const
	Returns the sibling at row and column for the item at index, or an invalid QModelIndex if there is no sibling at that location.

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	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	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 QPair< QTreeWidgetItem , int > &left, const QPair< QTreeWidgetItem , int > &right)

static bool	itemGreaterThan (const QPair< QTreeWidgetItem , int > &left, const QPair< QTreeWidgetItem , int > &right)

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

Protected Member Functions
	QTreeModel (QTreeModelPrivate &, QTreeWidget *parent=nullptr)

void	emitDataChanged (QTreeWidgetItem *item, int column, const QList< int > &roles)

void	beginInsertItems (QTreeWidgetItem *parent, int row, int count)

void	endInsertItems ()

void	beginRemoveItems (QTreeWidgetItem *parent, int row, int count)

void	endRemoveItems ()

void	sortItems (QList< QTreeWidgetItem * > *items, int column, Qt::SortOrder order)

void	timerEvent (QTimerEvent *) override
	This event handler can be reimplemented in a subclass to receive timer events for the object.

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	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)

Friends
class	QTreeWidget

class	QTreeWidgetPrivate

class	QTreeWidgetItem

class	QTreeWidgetItemPrivate

class	QTreeWidgetItemIterator

class	QTreeWidgetItemIteratorPrivate

struct	SkipSorting

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 Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 36 of file qtreewidget_p.h.

Constructor & Destructor Documentation

◆ QTreeModel() [1/2]

QTreeModel::QTreeModel	(	int	columns = 0,
		QTreeWidget *	parent = nullptr )

explicit

Constructs a tree model with a parent object and the given number of columns.

Definition at line 77 of file qtreewidget.cpp.

References Qt::ItemIsDropEnabled, QAbstractItemModel::parent, and setColumnCount().

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◆ ~QTreeModel()

QTreeModel::~QTreeModel ( )

Destroys this tree model.

Definition at line 107 of file qtreewidget.cpp.

References clear().

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◆ QTreeModel() [2/2]

QTreeModel::QTreeModel	(	QTreeModelPrivate &	dd,
		QTreeWidget *	parent = nullptr )

protected

Definition at line 93 of file qtreewidget.cpp.

References Qt::ItemIsDropEnabled, and QAbstractItemModel::parent.

Member Function Documentation

◆ beginInsertItems()

void QTreeModel::beginInsertItems	(	QTreeWidgetItem *	parent,
		int	row,
		int	count )

protected

Definition at line 789 of file qtreewidget.cpp.

References QAbstractItemModel::beginInsertRows(), and QAbstractItemModel::parent.

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◆ beginRemoveItems()

void QTreeModel::beginRemoveItems	(	QTreeWidgetItem *	parent,
		int	row,
		int	count )

protected

Definition at line 800 of file qtreewidget.cpp.

References QAbstractItemModel::beginRemoveRows(), QAbstractItemModel::count, i, j, QAbstractItemModel::parent, Q_ASSERT, and QList< T >::size().

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◆ clear()

void QTreeModel::clear ( )

Removes all items in the model.

Definition at line 122 of file qtreewidget.cpp.

References QList< T >::at(), QAbstractItemModel::beginResetModel(), QTreeWidgetItem::childCount(), QList< T >::clear(), QAbstractItemModel::endResetModel(), i, item, and QBasicTimer::stop().

Referenced by ~QTreeModel().

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◆ clearItemData()

bool QTreeModel::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 358 of file qtreewidget.cpp.

References QList< T >::at(), QList< T >::cbegin(), QList< T >::cend(), QAbstractItemModel::checkIndex(), QList< T >::clear(), QAbstractItemModel::dataChanged(), QTreeWidgetItemPrivate::display, emit, QAbstractItemModel::IndexIsValid, QVariant::isValid(), and item.

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◆ columnCount()

int QTreeModel::columnCount ( const QModelIndex & index = QModelIndex() ) const

overridevirtual

\reimp

Returns the number of columns in the item referred to by the given index.

Implements QAbstractItemModel.

Definition at line 291 of file qtreewidget.cpp.

References QTreeWidgetItem::columnCount(), and Q_UNUSED.

Referenced by emitDataChanged(), ensureSorted(), index(), insertColumns(), setColumnCount(), setHeaderData(), sort(), and sortItems().

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◆ createIndexFromItem()

QModelIndex QTreeModel::createIndexFromItem	(	int	row,
		int	col,
		QTreeWidgetItem *	item ) const

inline

Definition at line 103 of file qtreewidget_p.h.

References QAbstractItemModel::createIndex(), and item.

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◆ data()

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

overridevirtual

\reimp

Returns the data corresponding to the given model index and role.

Implements QAbstractItemModel.

Definition at line 326 of file qtreewidget.cpp.

References QTreeWidgetItem::data(), and item.

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◆ dropMimeData()

bool QTreeModel::dropMimeData	(	const QMimeData *	data,
		Qt::DropAction	action,
		int	row,
		int	column,
		const QModelIndex &	parent )

overridevirtual

Handles the data supplied by a drag and drop operation that ended with the given action.

Returns {true} if the data and action were handled by the model; otherwise returns {false}.

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 model to complete the action at the correct location.

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.

When row and column are -1 it means that the dropped data should be considered as dropped directly on parent. Usually this will mean appending the data as child items of parent. If row and column are greater than or equal zero, it means that the drop occurred just before the specified row and column in the specified parent.

The mimeTypes() member is called to get the list of acceptable MIME types. This default implementation assumes the default implementation of mimeTypes(), which returns a single default MIME type. If you reimplement mimeTypes() in your custom model to return multiple MIME types, you must reimplement this function to make use of them.

See also: supportedDropActions(), canDropMimeData(), {Using drag and drop with item views}

Reimplemented from QAbstractItemModel.

Definition at line 730 of file qtreewidget.cpp.

References QTreeWidget::dropMimeData(), item, QAbstractItemModel::parent, rowCount(), and view().

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◆ emitDataChanged()

void QTreeModel::emitDataChanged	(	QTreeWidgetItem *	item,
		int	column,
		const QList< int > &	roles )

protected

Emits the dataChanged() signal for the given item. if column is -1 then all columns have changed

Definition at line 763 of file qtreewidget.cpp.

References columnCount(), QAbstractItemModel::createIndex(), QAbstractItemModel::dataChanged(), emit, QAbstractItemModel::headerDataChanged(), Qt::Horizontal, item, QModelIndex::row(), and QObject::signalsBlocked().

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◆ endInsertItems()

void QTreeModel::endInsertItems ( )

protected

Definition at line 795 of file qtreewidget.cpp.

References QAbstractItemModel::endInsertRows().

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◆ endRemoveItems()

void QTreeModel::endRemoveItems ( )

protected

Definition at line 816 of file qtreewidget.cpp.

References QAbstractItemModel::endRemoveRows().

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◆ ensureSorted()

void QTreeModel::ensureSorted	(	int	column,
		Qt::SortOrder	order,
		int	start,
		int	end,
		const QModelIndex &	parent )

Definition at line 565 of file qtreewidget.cpp.

References Qt::AscendingOrder, QAbstractItemModel::changePersistentIndexList(), columnCount(), compare(), QAbstractItemModel::count, QAbstractItemModel::createIndex(), emit, i, item, itemGreaterThan(), itemLessThan(), j, QAbstractItemModel::layoutAboutToBeChanged(), QAbstractItemModel::layoutChanged(), QAbstractItemModel::parent, QAbstractItemModel::persistentIndexList(), QModelIndex::row(), sortedInsertionIterator(), QBasicTimer::stop(), and QAbstractItemModel::VerticalSortHint.

Referenced by QTreeWidgetPrivate::dataChanged().

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◆ flags()

Qt::ItemFlags QTreeModel::flags ( const QModelIndex & index ) const

overridevirtual

\reimp

Returns the flags for the item referred to the given index.

Reimplemented from QAbstractItemModel.

Definition at line 534 of file qtreewidget.cpp.

References QTreeWidgetItem::flags(), item, and Q_ASSERT.

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◆ hasChildren()

bool QTreeModel::hasChildren ( const QModelIndex & parent ) const

overridevirtual

Returns {true} if parent has any children; otherwise returns {false}.

Use rowCount() on the parent to find out the number of children.

Note that it is undefined behavior to report that a particular index hasChildren with this method if the same index has the flag Qt::ItemNeverHasChildren set.

See also: parent(), index()

Reimplemented from QAbstractItemModel.

Definition at line 299 of file qtreewidget.cpp.

References QTreeWidgetItem::childCount(), QTreeWidgetItem::DontShowIndicator, QTreeWidgetItem::DontShowIndicatorWhenChildless, QModelIndex::isValid(), item, QAbstractItemModel::parent, QTreeWidgetItemPrivate::policy, and QTreeWidgetItem::ShowIndicator.

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◆ headerData()

QVariant QTreeModel::headerData	(	int	section,
		Qt::Orientation	orientation,
		int	role ) const

overridevirtual

\reimp

Returns the header data corresponding to the given header section, orientation and data role.

Reimplemented from QAbstractItemModel.

Definition at line 495 of file qtreewidget.cpp.

References QTreeWidgetItem::data(), Qt::DisplayRole, Qt::Horizontal, and QString::number().

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◆ index() [1/2]

QModelIndex QTreeModel::index	(	const QTreeWidgetItem *	item,
		int	column ) const

Returns the model index that refers to the tree view item and column.

Definition at line 193 of file qtreewidget.cpp.

References QList< T >::at(), QAbstractItemModel::createIndex(), item, QListSpecialMethodsBase< T >::lastIndexOf(), QTreeWidgetItemPrivate::rowGuess, and QList< T >::size().

Referenced by QTreeWidgetPrivate::index().

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◆ index() [2/2]

QModelIndex QTreeModel::index	(	int	row,
		int	column,
		const QModelIndex &	parent ) const

overridevirtual

\reimp

Returns the model index with the given row, column and parent.

Implements QAbstractItemModel.

Definition at line 224 of file qtreewidget.cpp.

References QTreeWidgetItem::child(), columnCount(), QAbstractItemModel::createIndex(), QModelIndex::isValid(), item, and QAbstractItemModel::parent.

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◆ insertColumns()

bool QTreeModel::insertColumns	(	int	column,
		int	count,
		const QModelIndex &	parent )

override

\reimp

Definition at line 432 of file qtreewidget.cpp.

References QList< T >::append(), QList< T >::at(), QAbstractItemModel::beginInsertColumns(), child, QObject::children(), QModelIndex::column(), columnCount(), QAbstractItemModel::count, QTreeWidgetItemPrivate::display, Qt::DisplayRole, QAbstractItemModel::endInsertColumns(), i, QString::number(), QAbstractItemModel::parent, qBound(), QList< T >::resize(), and QList< T >::size().

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◆ insertRows()

bool QTreeModel::insertRows	(	int	row,
		int	count,
		const QModelIndex &	parent )

override

\reimp

Definition at line 406 of file qtreewidget.cpp.

References QAbstractItemModel::beginInsertRows(), QModelIndex::column(), QAbstractItemModel::count, QAbstractItemModel::endInsertRows(), QList< T >::insert(), item, QAbstractItemModel::parent, QTreeWidgetItem, rowCount(), and view().

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◆ internalMimeData()

QMimeData * QTreeModel::internalMimeData ( ) const

Definition at line 706 of file qtreewidget.cpp.

References QAbstractItemModel::mimeData().

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◆ item()

QTreeWidgetItem * QTreeModel::item ( const QModelIndex & index ) const

Returns the tree view item corresponding to the index given.

See also: QModelIndex

Definition at line 179 of file qtreewidget.cpp.

Referenced by QTreeWidgetPrivate::item().

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◆ itemChanged()

void QTreeModel::itemChanged ( QTreeWidgetItem * item )

Definition at line 743 of file qtreewidget.cpp.

References QAbstractItemModel::dataChanged(), emit, and item.

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◆ itemData()

QMap< int, QVariant > QTreeModel::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 377 of file qtreewidget.cpp.

References QList< T >::at(), Qt::CheckStateRole, QTreeWidgetItem::data(), Qt::DisplayRole, i, item, QWidgetItemData::role, and QWidgetItemData::value.

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◆ itemGreaterThan()

bool QTreeModel::itemGreaterThan	(	const QPair< QTreeWidgetItem *, int > &	left,
		const QPair< QTreeWidgetItem *, int > &	right )

static

Returns true if the value of the left item is greater than the value of the right item.

Used by the sorting functions.

Definition at line 679 of file qtreewidget.cpp.

Referenced by ensureSorted(), and sortItems().

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◆ itemLessThan()

bool QTreeModel::itemLessThan	(	const QPair< QTreeWidgetItem *, int > &	left,
		const QPair< QTreeWidgetItem *, int > &	right )

static

Returns true if the value of the left item is less than the value of the right item.

Used by the sorting functions.

Definition at line 664 of file qtreewidget.cpp.

Referenced by ensureSorted(), and sortItems().

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◆ mimeData()

QMimeData * QTreeModel::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 711 of file qtreewidget.cpp.

References QList< T >::begin(), QList< T >::clear(), QList< T >::end(), QList< T >::erase(), items, mimeData, QTreeWidget::mimeData(), and view().

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◆ mimeTypes()

QStringList QTreeModel::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 698 of file qtreewidget.cpp.

References view().

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◆ parent()

QModelIndex QTreeModel::parent ( const QModelIndex & child ) const

overridevirtual

\reimp

Returns the parent model index of the index given as the child.

Implements QAbstractItemModel.

Definition at line 251 of file qtreewidget.cpp.

References child, QAbstractItemModel::parent, and QTreeWidgetItem::parent().

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◆ removeRows()

bool QTreeModel::removeRows	(	int	row,
		int	count,
		const QModelIndex &	parent = QModelIndex() )

override

\reimp

Definition at line 469 of file qtreewidget.cpp.

References QAbstractItemModel::beginRemoveRows(), child, QAbstractItemModel::endRemoveRows(), i, item, QAbstractItemModel::parent, Q_ASSERT, rowCount(), QList< T >::takeAt(), and QTreeWidgetItem::takeChild().

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◆ rowCount()

int QTreeModel::rowCount ( const QModelIndex & parent ) const

overridevirtual

\reimp

Returns the number of rows in the parent model index.

Implements QAbstractItemModel.

Definition at line 272 of file qtreewidget.cpp.

References QTreeWidgetItem::childCount(), QModelIndex::isValid(), item, and QAbstractItemModel::parent.

Referenced by dropMimeData(), insertRows(), and removeRows().

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◆ setColumnCount()

void QTreeModel::setColumnCount ( int columns )

Sets the number of columns in the tree model.

Definition at line 143 of file qtreewidget.cpp.

References QList< T >::append(), QAbstractItemModel::beginInsertColumns(), QAbstractItemModel::beginRemoveColumns(), columnCount(), QTreeWidgetItemPrivate::display, Qt::DisplayRole, QAbstractItemModel::endInsertColumns(), QAbstractItemModel::endRemoveColumns(), i, QString::number(), QTreeWidgetItem, QList< T >::resize(), and view().

Referenced by QTreeModel().

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◆ setData()

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

overridevirtual

\reimp

Sets the data for the item specified by the index and role to that referred to by the value.

Returns true if successful; otherwise returns false.

Reimplemented from QAbstractItemModel.

Definition at line 346 of file qtreewidget.cpp.

References item, and QTreeWidgetItem::setData().

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◆ setHeaderData()

bool QTreeModel::setHeaderData	(	int	section,
		Qt::Orientation	orientation,
		const QVariant &	value,
		int	role )

overridevirtual

\reimp

Sets the header data for the item specified by the header section, orientation and data role to the given value.

Returns true if successful; otherwise returns false.

Reimplemented from QAbstractItemModel.

Definition at line 517 of file qtreewidget.cpp.

References columnCount(), and QTreeWidgetItem::setData().

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◆ sort()

void QTreeModel::sort	(	int	column,
		Qt::SortOrder	order )

override

Sorts the entire tree in the model in the given order, by the values in the given column.

Definition at line 550 of file qtreewidget.cpp.

References columnCount(), QTreeWidgetItem::sortChildren(), and QBasicTimer::stop().

Referenced by QTreeWidgetPrivate::sort().

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◆ sortedInsertionIterator()

QList< QTreeWidgetItem * >::iterator QTreeModel::sortedInsertionIterator	(	const QList< QTreeWidgetItem * >::iterator &	begin,
		const QList< QTreeWidgetItem * >::iterator &	end,
		Qt::SortOrder	order,
		QTreeWidgetItem *	item )

static

Definition at line 688 of file qtreewidget.cpp.

References Qt::AscendingOrder, begin(), and item.

Referenced by ensureSorted().

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◆ sortItems()

void QTreeModel::sortItems	(	QList< QTreeWidgetItem * > *	items,
		int	column,
		Qt::SortOrder	order )

protected

Definition at line 821 of file qtreewidget.cpp.

References Qt::AscendingOrder, QList< T >::at(), QAbstractItemModel::changePersistentIndexList(), columnCount(), compare(), QAbstractItemModel::createIndex(), QObject::d_ptr, QScopedPointer< T, Cleanup >::data(), i, item, itemGreaterThan(), itemLessThan(), items, QAbstractItemModelPrivate::persistent, Q_UNUSED, QList< T >::replace(), QList< T >::size(), and toList().

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◆ supportedDropActions()

Qt::DropActions QTreeModel::supportedDropActions ( ) const

overridevirtual

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. You must also reimplement the dropMimeData() function to handle the additional operations.

See also: dropMimeData(), Qt::DropActions, {Using drag and drop with item views}

Reimplemented from QAbstractItemModel.

Definition at line 738 of file qtreewidget.cpp.

References QTreeWidget::supportedDropActions(), and view().

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◆ timerEvent()

void QTreeModel::timerEvent ( QTimerEvent * event )

overrideprotectedvirtual

This event handler can be reimplemented in a subclass to receive timer events for the object.

QChronoTimer provides higher-level interfaces to the timer functionality, and also more general information about timers. The timer event is passed in the event parameter.

See also: startTimer(), killTimer(), event()

Reimplemented from QObject.

Definition at line 860 of file qtreewidget.cpp.

References QObject::timerEvent(), and QBasicTimer::timerId().

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◆ view()

QTreeWidget * QTreeModel::view ( ) const

inline

Definition at line 50 of file qtreewidget_p.h.

References QObject::parent().

Referenced by dropMimeData(), insertRows(), mimeData(), mimeTypes(), setColumnCount(), and supportedDropActions().

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Friends And Related Symbol Documentation

◆ QTreeWidget

friend class QTreeWidget

friend

Definition at line 39 of file qtreewidget_p.h.

◆ QTreeWidgetItem

friend class QTreeWidgetItem

friend

Definition at line 41 of file qtreewidget_p.h.

Referenced by insertRows(), and setColumnCount().

◆ QTreeWidgetItemIterator

friend class QTreeWidgetItemIterator

friend

Definition at line 43 of file qtreewidget_p.h.

◆ QTreeWidgetItemIteratorPrivate

friend class QTreeWidgetItemIteratorPrivate

friend

Definition at line 44 of file qtreewidget_p.h.

◆ QTreeWidgetItemPrivate

friend class QTreeWidgetItemPrivate

friend

Definition at line 42 of file qtreewidget_p.h.

◆ QTreeWidgetPrivate

friend class QTreeWidgetPrivate

friend

Definition at line 40 of file qtreewidget_p.h.

◆ SkipSorting

friend struct SkipSorting

friend

Definition at line 140 of file qtreewidget_p.h.

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

qtbase/src/widgets/itemviews/qtreewidget_p.h (81e53db23854bc62a31c1e31e4e90971214eaec4)
qtbase/src/widgets/itemviews/qtreewidget.cpp (bddf27cd5a5412c8282fab43111e7319874ca44e)

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QTreeModel() [1/2]

◆ ~QTreeModel()

◆ QTreeModel() [2/2]

Member Function Documentation

◆ beginInsertItems()

◆ beginRemoveItems()

◆ clear()

◆ clearItemData()

◆ columnCount()

◆ createIndexFromItem()

◆ data()

◆ dropMimeData()

◆ emitDataChanged()

◆ endInsertItems()

◆ endRemoveItems()

◆ ensureSorted()

◆ flags()

◆ hasChildren()

◆ headerData()

◆ index() [1/2]

◆ index() [2/2]

◆ insertColumns()

◆ insertRows()

◆ internalMimeData()

◆ item()

◆ itemChanged()

◆ itemData()

◆ itemGreaterThan()

◆ itemLessThan()

◆ mimeData()

◆ mimeTypes()

◆ parent()

◆ removeRows()

◆ rowCount()

◆ setColumnCount()

◆ setData()

◆ setHeaderData()

◆ sort()

◆ sortedInsertionIterator()

◆ sortItems()

◆ supportedDropActions()

◆ timerEvent()

◆ view()

Friends And Related Symbol Documentation

◆ QTreeWidget

◆ QTreeWidgetItem

◆ QTreeWidgetItemIterator

◆ QTreeWidgetItemIteratorPrivate

◆ QTreeWidgetItemPrivate

◆ QTreeWidgetPrivate

◆ SkipSorting