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  1. constructTreeListRowSorterSorter :: (IsTreeListRowSorter o, MonadIO m, IsSorter a) => a -> m (GValueConstruct o)

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Construct a GValueConstruct with valid value for the “sorter” property. This is rarely needed directly, but it is used by new.

  2. getTreeListRowSorterSorter :: (MonadIO m, IsTreeListRowSorter o) => o -> m (Maybe Sorter)

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Get the value of the “sorter” property. When overloading is enabled, this is equivalent to 

    get treeListRowSorter #sorter

  3. setTreeListRowSorterSorter :: (MonadIO m, IsTreeListRowSorter o, IsSorter a) => o -> a -> m ()

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Set the value of the “sorter” property. When overloading is enabled, this is equivalent to 

    set treeListRowSorter [ #sorter := value ]

  4. toTreeListRowSorter :: (MonadIO m, IsTreeListRowSorter o) => o -> m TreeListRowSorter

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Cast to TreeListRowSorter, for types for which this is known to be safe. For general casts, use castTo.

  5. treeListRowSorterGetSorter :: (HasCallStack, MonadIO m, IsTreeListRowSorter a) => a -> m (Maybe Sorter)

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Returns the sorter used by self.

  6. treeListRowSorterNew :: (HasCallStack, MonadIO m, IsSorter a) => Maybe a -> m TreeListRowSorter

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Create a special-purpose sorter that applies the sorting of sorter to the levels of a GtkTreeListModel. Note that this sorter relies on TreeListModel:passthrough being False as it can only sort TreeListRows.

  7. treeListRowSorterSetSorter :: (HasCallStack, MonadIO m, IsTreeListRowSorter a, IsSorter b) => a -> Maybe b -> m ()

    gi-gtk4 GI.Gtk.Objects.TreeListRowSorter

    Sets the sorter to use for items with the same parent. This sorter will be passed the TreeListRow:item of the tree list rows passed to self.

  8. module GI.Gtk.Objects.TreeModelSort

    A GtkTreeModel which makes an underlying tree model sortable The GtkTreeModelSort is a model which implements the GtkTreeSortable interface. It does not hold any data itself, but rather is created with a child model and proxies its data. It has identical column types to this child model, and the changes in the child are propagated. The primary purpose of this model is to provide a way to sort a different model without modifying it. Note that the sort function used by GtkTreeModelSort is not guaranteed to be stable. The use of this is best demonstrated through an example. In the following sample code we create two GtkTreeView widgets each with a view of the same data. As the model is wrapped here by a GtkTreeModelSort, the two GtkTreeViews can each sort their view of the data without affecting the other. By contrast, if we simply put the same model in each widget, then sorting the first would sort the second.

    Using a GtkTreeModelSort

    C code

    {
GtkTreeView *tree_view1;
GtkTreeView *tree_view2;
GtkTreeModel *sort_model1;
GtkTreeModel *sort_model2;
GtkTreeModel *child_model;

// get the child model
child_model = get_my_model ();

// Create the first tree
sort_model1 = gtk_tree_model_sort_new_with_model (child_model);
tree_view1 = gtk_tree_view_new_with_model (sort_model1);

// Create the second tree
sort_model2 = gtk_tree_model_sort_new_with_model (child_model);
tree_view2 = gtk_tree_view_new_with_model (sort_model2);

// Now we can sort the two models independently
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model1),
COLUMN_1, GTK_SORT_ASCENDING);
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model2),
COLUMN_1, GTK_SORT_DESCENDING);
}
    To demonstrate how to access the underlying child model from the sort model, the next example will be a callback for the GtkTreeSelection GtkTreeSelection::changed signal. In this callback, we get a string from COLUMN_1 of the model. We then modify the string, find the same selected row on the child model, and change the row there.

    Accessing the child model of in a selection changed callback

    C code

    void
selection_changed (GtkTreeSelection *selection, gpointer data)
{
GtkTreeModel *sort_model = NULL;
GtkTreeModel *child_model;
GtkTreeIter sort_iter;
GtkTreeIter child_iter;
char *some_data = NULL;
char *modified_data;

// Get the current selected row and the model.
if (! gtk_tree_selection_get_selected (selection,
&sort_model,
&sort_iter))
return;

// Look up the current value on the selected row and get
// a new value to change it to.
gtk_tree_model_get (GTK_TREE_MODEL (sort_model), &sort_iter,
COLUMN_1, &some_data,
-1);

modified_data = change_the_data (some_data);
g_free (some_data);

// Get an iterator on the child model, instead of the sort model.
gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (sort_model),
&child_iter,
&sort_iter);

// Get the child model and change the value of the row. In this
// example, the child model is a GtkListStore. It could be any other
// type of model, though.
child_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (sort_model));
gtk_list_store_set (GTK_LIST_STORE (child_model), &child_iter,
COLUMN_1, &modified_data,
-1);
g_free (modified_data);
}

  9. class (GObject o, IsDescendantOf TreeModelSort o) => IsTreeModelSort o

    gi-gtk4 GI.Gtk.Objects.TreeModelSort

    Type class for types which can be safely cast to TreeModelSort, for instance with toTreeModelSort.

  10. newtype TreeModelSort

    gi-gtk4 GI.Gtk.Objects.TreeModelSort

    Memory-managed wrapper type.

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