Added missing files for native gui

yms/treeview.py

@@ -0,0 +1,43 @@
+from gi.repository import Gtk
+
+def add_column(treeview, label, index, xalign=None, col_fg=None, col_bg=None, visible=True):
+    col = Gtk.TreeViewColumn(label)
+    cell = Gtk.CellRendererText()
+    col.pack_start(cell, True)
+    col.add_attribute(cell, 'text', index)
+    if xalign:
+        cell.set_property('xalign', xalign)
+    if col_fg:
+        col.add_attribute(cell, 'foreground', col_fg)
+    if col_bg:
+        col.add_attribute(cell, 'background', col_bg)
+    treeview.append_column(col)
+
+def get_value(treeview, column=0):
+    """
+    Returns the value of the specified column of the linked model
+    """
+    try:
+        selection = treeview.get_selection()
+    except:
+        return None
+    if selection.get_mode() == Gtk.SelectionMode.SINGLE:
+        (model, iter) = selection.get_selected()
+        if iter:
+            return model.get_value(iter, column)
+    return None
+
+def set_value(treeview, column, value):
+    """
+    Sets the value of the specified column of the linked model
+    """
+    try:
+        selection = treeview.get_selection()
+    except:
+        return False
+    if selection.get_mode() == Gtk.SelectionMode.SINGLE:
+        (model, iter) = selection.get_selected()
+        model.set_value(iter, column, value)
+        return True
+    else:
+        return False