Digikam::DragDropModelImplementation Class Reference

Inheritance diagram for Digikam::DragDropModelImplementation:

Public Member Functions
	DragDropModelImplementation ()=default
	A class providing a sample implementation for a QAbstractItemModel redirecting drag-and-drop support to a handler.
virtual Qt::ItemFlags	dragDropFlags (const QModelIndex &index) const
	Call from your flags() method, adding the relevant drag drop flags.
Qt::ItemFlags	dragDropFlagsV2 (const QModelIndex &index) const
	This is an alternative approach to dragDropFlags().
AbstractItemDragDropHandler *	dragDropHandler () const
bool	dropMimeData (const QMimeData *, Qt::DropAction, int, int, const QModelIndex &)
virtual bool	isDragEnabled (const QModelIndex &index) const
virtual bool	isDropEnabled (const QModelIndex &index) const
QMimeData *	mimeData (const QModelIndexList &indexes) const
QStringList	mimeTypes () const
void	setDragDropHandler (AbstractItemDragDropHandler *handler)
	Set a drag drop handler.
Qt::DropActions	supportedDropActions () const
	Implements the relevant QAbstractItemModel methods for drag and drop.

Protected Attributes
AbstractItemDragDropHandler *	m_dragDropHandler = nullptr

Constructor & Destructor Documentation

DragDropModelImplementation()

Digikam::DragDropModelImplementation::DragDropModelImplementation ( )

default

Include the macro DECLARE_Model_DRAG_DROP_METHODS in your derived QAbstractItemModel class.

Member Function Documentation

dragDropFlags()

Qt::ItemFlags Digikam::DragDropModelImplementation::dragDropFlags ( const QModelIndex & index ) const

virtual

Default implementation enables both drag and drop on the index if a drag drop handler is set. Reimplement to fine-tune. Note: There is an alternative below.

dragDropFlagsV2()

Qt::ItemFlags Digikam::DragDropModelImplementation::dragDropFlagsV2

(

const QModelIndex &

index

)

const

dragDropFlagsV2 calls the virtual methods isDragEnabled() and isDropEnabled() which you then reimplement. Use simple dragDropFlags() if you need not customization, or reimplement dragDropFlags() if you fine-tune it yourself.

supportedDropActions()

Qt::DropActions Digikam::DragDropModelImplementation::supportedDropActions

(

)

const

All functionality is redirected to the handler. dropMimeData() always returns false, leaving implementation to the view.