Добавлена валидация treeView "melody"

source/ubl-settings-bootloader.cc

@@ -883,9 +883,31 @@ void MainWindow::remove_line_melody(const Gtk::TreeModel::Path&, const Gtk::Tree
         imgInfo->set_from_icon_name(icon_checked, Gtk::ICON_SIZE_MENU);
         lblWarning->set_text("");
     }
+    this->validate_melody();
     
 }
 
+void MainWindow::validate_melody() {
+    Glib::RefPtr<Gtk::TreeModel> treeViewMelody_model = treeViewMelody->get_model();
+    Gtk::TreeModel::Children children = treeViewMelody_model->children();
+    int count = 0;
+    for(Gtk::TreeModel::iterator iter = children.begin(); iter != children.end(); ++iter) {
+        Gtk::TreeModel::Row row = *iter;
+        if (row[m_columns_melody.check_button]) {
+            count+=1;
+        }
+    }
+    if (count>1) {
+        for(Gtk::TreeModel::iterator iter = children.begin(); iter != children.end(); ++iter) {
+            Gtk::TreeModel::Row row = *iter;
+            if (row[m_columns_melody.check_button]) {
+                count-=1;
+                row[m_columns_melody.check_button] = false;
+            }
+        }
+    }
+}
+
 bool MainWindow::focus_tree_view(GdkEventFocus*) {
     treeViewKernel->set_can_focus(false);
     treeViewIPT->set_can_focus(false);

source/ubl-settings-bootloader.h

@@ -336,6 +336,7 @@ public:
     void remove_user();
     void remove_melody();
     void settings();
+    void validate_melody();
     void remove_line_melody(const Gtk::TreeModel::Path&, const Gtk::TreeModel::iterator& iter);
     void view_add_colums_user(Gtk::TreeView &treeView);
     void view_add_colums_melody(Gtk::TreeView &treeView);