Trait gtk::prelude::TreeDragSourceExt
source · [−]pub trait TreeDragSourceExt: 'static {
fn drag_data_delete(&self, path: &mut TreePath) -> bool;
fn drag_data_get(
&self,
path: &mut TreePath,
selection_data: &mut SelectionData
) -> bool;
fn row_draggable(&self, path: &mut TreePath) -> bool;
}Expand description
Trait containing all TreeDragSource methods.
Implementors
ListStore, TreeDragSource, TreeModelFilter, TreeModelSort, TreeStore
Required Methods
fn drag_data_delete(&self, path: &mut TreePath) -> bool
fn drag_data_delete(&self, path: &mut TreePath) -> bool
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!
path
row that was being dragged
Returns
true if the row was successfully deleted
fn drag_data_get(
&self,
path: &mut TreePath,
selection_data: &mut SelectionData
) -> bool
fn drag_data_get(
&self,
path: &mut TreePath,
selection_data: &mut SelectionData
) -> bool
Asks the TreeDragSource to fill in selection_data with a
representation of the row at path. selection_data->target gives
the required type of the data. Should robustly handle a path no
longer found in the model!
path
row that was dragged
selection_data
a SelectionData to fill with data
from the dragged row
Returns
true if data of the required type was provided
fn row_draggable(&self, path: &mut TreePath) -> bool
fn row_draggable(&self, path: &mut TreePath) -> bool
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.
path
row on which user is initiating a drag
Returns
true if the row can be dragged