Trait gtk4::prelude::TreeDragSourceExt

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pub trait TreeDragSourceExt: 'static {
    // Required methods
    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§

source

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

source

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

source

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

Implementors§