Added missing files for native gui

yms/combobox.py

@@ -0,0 +1,128 @@
+from gi.repository import Gtk
+
+def load_from_dict(combobox, dictionary, selected=None, sort=False):
+    """
+    Populates a simple combo box based on a given dictionary
+    Optionally, the list can be sorted in ascending order by value
+    The key fields must be of a uniform type
+    """
+    if len(dictionary) > 0:
+        if type(next(iter(dictionary))) == int:
+            lst = Gtk.ListStore(int, str)
+        else:
+            lst = Gtk.ListStore(str, str)
+    else:
+        lst = Gtk.ListStore(str, str)
+    if sort:
+        for key in sorted(dictionary, key=dictionary.get):
+            lst.append((key, dictionary[key]))
+    else:
+        for item in dictionary.items():
+            lst.append(item)
+    combobox.set_model(lst)
+    cell = Gtk.CellRendererText()
+    combobox.pack_start(cell, True)
+    combobox.add_attribute(cell, 'text', 1)
+    if selected is not None:
+        activate_row(combobox, selected)
+
+def refresh_dict(combobox, dictionary, keep_selection=True):
+    """
+    Populates the data model of a combo box with new values
+    """
+    model = combobox.get_model()
+    selected = get_value(combobox)
+    model.clear()
+    for item in dictionary.iteritems():
+        model.append(item)
+    if keep_selection:
+        activate_row(combobox, selected)
+
+def get_list_value(combobox, decode=False):
+    model = combobox.get_model()
+    active = combobox.get_active()
+    if active < 0:
+        return None
+    if decode:
+        return model[active][0].decode('utf-8')
+    else:
+        return model[active][0]
+
+def get_tree_value(combobox, decode=False):
+    model = combobox.get_model()
+    it = combobox.get_active_iter()
+    if it is None:
+        return None
+    val = model.get_value(it, 0)
+    if decode:
+        return val.decode('utf-8')
+    else:
+        return val
+
+def get_value(combobox, decode=False):
+    """
+    Liefert den Wert der ersten Spalte des verknüpften Modells
+    TODO Unterscheidung ListStore und TreeStore notwending?
+         Ggf. alles über den Iter?
+    """
+    model = combobox.get_model()
+    active = combobox.get_active()
+    if active < 0:
+        return None
+    else:
+        if type(model) == gtk.TreeStore:
+            it = combobox.get_active_iter()
+            val = model.get_value(it, 0)
+            if decode:
+                return val.decode('utf-8')
+            else:
+                return val
+        else:
+            if decode:
+                return model[active][0].decode('utf-8')
+            else:
+                return model[active][0]
+
+def search(model, treeiter, value, column):
+    """
+    Suche einen TreeIter zu einem gegebenen Spaltenwert
+    """
+    while treeiter:
+        compare_val = model.get_value(treeiter, column)
+        if value == compare_val:
+            return treeiter
+        result = search(model, model.iter_children(treeiter), value, column)
+        if result:
+            return result
+        treeiter = model.iter_next(treeiter)
+    return None
+
+def activate_tree_row(combobox, value, column=0):
+    model = combobox.get_model()
+    it = search(model, model.iter_children(None), value, column)
+    combobox.set_active_iter(it)
+
+def activate_row(combobox, value, column=0):
+    """Zeigt einen bestimmten Listeneintrag an"""
+    model = combobox.get_model()
+    for row in model:
+        if row[column] == value:
+            combobox.set_active_iter(row.iter)
+            return
+    combobox.set_active(-1)
+
+def has_list_value(combobox, value):
+    """ Prüft, ob in der zugrundeliegenden Liste ein Element vorhanden ist"""
+    model = combobox.get_model()
+    for row in model:
+        if row[0] == value:
+            return True
+    return False
+
+def get_first_iter(combobox, columnindex, value):
+    """Liefert einen Iter in die Liste, wo der Spalteninhalt mit einem vorgegebenen Wert beginnt"""
+    model = combobox.get_model()
+    for row in model:
+        if row[columnindex].startswith(value):
+            return row.iter
+    return None