KLinkItemSelectionModel Class Reference

#include <klinkitemselectionmodel.h>

Inheritance diagram for KLinkItemSelectionModel:

Public Member Functions
	KLinkItemSelectionModel (QAbstractItemModel *targetModel, QItemSelectionModel *linkedItemSelectionModel, QObject *parent=0)
	~KLinkItemSelectionModel ()
void	select (const QModelIndex &index, QItemSelectionModel::SelectionFlags command)
void	select (const QItemSelection &selection, QItemSelectionModel::SelectionFlags command)

Protected Attributes
KLinkItemSelectionModelPrivate *const	d_ptr

Detailed Description

Makes it possible to share a selection in multiple views which do not have the same source model.

Although multiple views can share the same QItemSelectionModel, the views then need to have the same source model.

If there is a proxy model between the model and one of the views, or different proxy models in each, this class makes it possible to share the selection between the views.

Sharing a QItemSelectionModel between views on the same model is trivial

If a proxy model is used, it is no longer possible to share the QItemSelectionModel directly

A KLinkItemSelectionModel can be used to map the selection through the proxy model

QAbstractItemModel *model = getModel();

QSortFilterProxyModel *proxy = new QSortFilterProxyModel();
proxy->setSourceModel(model);

QTreeView *view1 = new QTreeView(splitter);
view1->setModel(model);

KLinkItemSelectionModel *view2SelectionModel = new KLinkItemSelectionModel( proxy, view1->selectionModel());

QTreeView *view2 = new QTreeView(splitter);
// Note that the QAbstractItemModel passed to KLinkItemSelectionModel must be the same as what is used in the view
view2->setModel(proxy);
view2->setSelectionModel( view2SelectionModel );

Arbitrarily complex proxy configurations on the same root model can be used

QAbstractItemModel *model = getModel();

QSortFilterProxyModel *proxy1 = new QSortFilterProxyModel();
proxy1->setSourceModel(model);
QSortFilterProxyModel *proxy2 = new QSortFilterProxyModel();
proxy2->setSourceModel(proxy1);
QSortFilterProxyModel *proxy3 = new QSortFilterProxyModel();
proxy3->setSourceModel(proxy2);

QTreeView *view1 = new QTreeView(splitter);
view1->setModel(proxy3);

QSortFilterProxyModel *proxy4 = new QSortFilterProxyModel();
proxy4->setSourceModel(model);
QSortFilterProxyModel *proxy5 = new QSortFilterProxyModel();
proxy5->setSourceModel(proxy4);

KLinkItemSelectionModel *view2SelectionModel = new KLinkItemSelectionModel( proxy5, view1->selectionModel());

QTreeView *view2 = new QTreeView(splitter);
// Note that the QAbstractItemModel passed to KLinkItemSelectionModel must be the same as what is used in the view
view2->setModel(proxy5);
view2->setSelectionModel( view2SelectionModel );

See also kdelibs/kdeui/tests/proxymodeltestapp/proxyitemselectionwidget.cpp.

Since

4.5

Author

Stephen Kelly steve.nosp@m.ire@.nosp@m.gmail.nosp@m..com

Definition at line 95 of file klinkitemselectionmodel.h.

Constructor & Destructor Documentation

KLinkItemSelectionModel::KLinkItemSelectionModel	(	QAbstractItemModel *	targetModel,
		QItemSelectionModel *	linkedItemSelectionModel,
		QObject *	parent = 0
	)

Constructor.

Definition at line 68 of file klinkitemselectionmodel.cpp.

KLinkItemSelectionModel::~KLinkItemSelectionModel

(

)

Definition at line 77 of file klinkitemselectionmodel.cpp.

Member Function Documentation

void KLinkItemSelectionModel::select	(	const QModelIndex &	index,
		QItemSelectionModel::SelectionFlags	command
	)

Definition at line 82 of file klinkitemselectionmodel.cpp.

void KLinkItemSelectionModel::select	(	const QItemSelection &	selection,
		QItemSelectionModel::SelectionFlags	command
	)

Definition at line 134 of file klinkitemselectionmodel.cpp.

Member Data Documentation

KLinkItemSelectionModelPrivate* const KLinkItemSelectionModel::d_ptr

protected

Definition at line 108 of file klinkitemselectionmodel.h.

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

• klinkitemselectionmodel.h
• klinkitemselectionmodel.cpp