Trait gtk::prelude::TreeDragDestExt

pub trait TreeDragDestExt: 'static {
    fn drag_data_received(
        &self, 
        dest: &mut TreePath, 
        selection_data: &mut SelectionData
    ) -> bool;
    fn row_drop_possible(
        &self, 
        dest_path: &mut TreePath, 
        selection_data: &mut SelectionData
    ) -> bool;
}

Trait containing all TreeDragDest methods.

Implementors

ListStore, TreeDragDest, TreeStore

Required Methods

fn drag_data_received(
    &self,
    dest: &mut TreePath,
    selection_data: &mut SelectionData
) -> bool

Asks the TreeDragDest to insert a row before the path dest, deriving the contents of the row from selection_data. If dest is outside the tree so that inserting before it is impossible, false will be returned. Also, false may be returned if the new row is not created for some model-specific reason. Should robustly handle a dest no longer found in the model!

dest

row to drop in front of

selection_data

data to drop

Returns

whether a new row was created before position dest

fn row_drop_possible(
    &self,
    dest_path: &mut TreePath,
    selection_data: &mut SelectionData
) -> bool

Determines whether a drop is possible before the given dest_path, at the same depth as dest_path. i.e., can we drop the data in selection_data at that location. dest_path does not have to exist; the return value will almost certainly be false if the parent of dest_path doesn’t exist, though.

dest_path

destination row

selection_data

the data being dragged

Returns

true if a drop is possible before dest_path

Implementors

impl<O: IsA<TreeDragDest>> TreeDragDestExt for O