Clear dropdown text if the associated list selection is cleared

This is currently impossible to do by interacting with the widget, but
may happen if the selected item is removed.

diff --git a/source/dropdown.cpp b/source/dropdown.cpp
index 5b1d19b4f4d6c04576e76a9a015b945b0a956a93..34ca1781153f946fddaaf69f82e993643b2864f1 100644 (file)
--- a/source/dropdown.cpp
+++ b/source/dropdown.cpp
@@ -31,6 +31,7 @@ void Dropdown::init()
        list.set_visible(false);
        list.set_view_all();
        list.signal_item_selected.connect(sigc::mem_fun(this, &Dropdown::list_item_selected));
+       list.signal_selection_cleared.connect(sigc::mem_fun(this, &Dropdown::list_selection_cleared));
        list.signal_autosize_changed.connect(sigc::mem_fun(this, &Dropdown::list_autosize_changed));
 }
 
@@ -167,6 +168,11 @@ void Dropdown::list_item_selected(unsigned index)
        rebuild();
 }
 
+void Dropdown::list_selection_cleared()
+{
+       text.set(string());
+}
+
 
 Dropdown::Loader::Loader(Dropdown &d):
        DataFile::DerivedObjectLoader<Dropdown, Widget::Loader>(d)

diff --git a/source/dropdown.h b/source/dropdown.h
index ad8b4619bc4a00789e6bd53ab6ac6dae3ba83829..78c52b763a6215aab975904c02be782713628056 100644 (file)
--- a/source/dropdown.h
+++ b/source/dropdown.h
@@ -65,6 +65,7 @@ private:
        void list_autosize_changed();
        void resize_list();
        void list_item_selected(unsigned);
+       void list_selection_cleared();
 };
 
 } // namespace GLtk