GI.Gtk.Interfaces.TreeDragSource

Exported types

newtype TreeDragSource

Constructors

TreeDragSource (ManagedPtr TreeDragSource)

Instances

WrappedPtr TreeDragSource

Methods

wrappedPtrCalloc :: IO (Ptr TreeDragSource)

wrappedPtrCopy :: TreeDragSource -> IO TreeDragSource

wrappedPtrFree :: Maybe (FunPtr (Ptr TreeDragSource -> IO ()))

IsTreeDragSource TreeDragSource

noTreeDragSource :: Maybe TreeDragSource

class ManagedPtrNewtype a => IsTreeDragSource a

Instances

IsTreeDragSource TreeDragSource

IsTreeDragSource TreeModelSort

IsTreeDragSource ListStore

IsTreeDragSource TreeStore

IsTreeDragSource TreeModelFilter

Methods

dragDataDelete

treeDragSourceDragDataDelete

Arguments

:: (HasCallStack, MonadIO m, IsTreeDragSource a)

=> a

dragSource: a TreeDragSource

-> TreePath

path: row that was being dragged

-> m Bool

Returns: True if the row was successfully deleted

Asks the TreeDragSource to delete the row at path, because it was moved somewhere else via drag-and-drop. Returns False if the deletion fails because path no longer exists, or for some model-specific reason. Should robustly handle a path no longer found in the model!

dragDataGet

treeDragSourceDragDataGet

Arguments

:: (HasCallStack, MonadIO m, IsTreeDragSource a)

=> a

dragSource: a TreeDragSource

-> TreePath

path: row that was dragged

-> SelectionData

selectionData: a SelectionData to fill with data from the dragged row

-> m Bool

Returns: True if data of the required type was provided

Asks the TreeDragSource to fill in selectionData with a representation of the row at path. selectionData->target gives the required type of the data. Should robustly handle a path no longer found in the model!

rowDraggable

treeDragSourceRowDraggable

Arguments

:: (HasCallStack, MonadIO m, IsTreeDragSource a)

=> a

dragSource: a TreeDragSource

-> TreePath

path: row on which user is initiating a drag

-> m Bool

Returns: True if the row can be dragged

Asks the TreeDragSource whether a particular row can be used as the source of a DND operation. If the source doesn’t implement this interface, the row is assumed draggable.