Trait gtk4::prelude::TreeDragSourceExt [−][src]
pub trait TreeDragSourceExt: 'static {
fn drag_data_delete(&self, path: &TreePath) -> bool;
fn drag_data_get(&self, path: &TreePath) -> Option<ContentProvider>;
fn row_draggable(&self, path: &TreePath) -> bool;
}Expand description
Trait containing all TreeDragSource methods.
Implementors
ListStore, TreeDragSource, TreeModelFilter, TreeModelSort, TreeStore
Required methods
fn drag_data_delete(&self, path: &TreePath) -> bool
fn drag_data_delete(&self, path: &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: &TreePath) -> Option<ContentProvider>
fn drag_data_get(&self, path: &TreePath) -> Option<ContentProvider>
Asks the TreeDragSource to return a gdk::ContentProvider representing
the row at path. Should robustly handle a path no
longer found in the model!
path
row that was dragged
Returns
a gdk::ContentProvider for the
given path
fn row_draggable(&self, path: &TreePath) -> bool
fn row_draggable(&self, path: &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