Support new mate-menus api

- Requires mate-menus 1.21.0
- Use Gobject-introspection
- Migrate to python3

6 files changed, 247 insertions, 174 deletions

diff --git a/Mozo/MainWindow.py b/Mozo/MainWindow.py
index 75533fa..849de09 100644
--- a/Mozo/MainWindow.py
+++ b/Mozo/MainWindow.py
@@ -16,12 +16,13 @@
 #   License along with this library; if not, write to the Free Software
 #   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
-import matemenu
 import gi
 gi.require_version('Gtk', '3.0')
 gi.require_version('Gdk', '3.0')
+gi.require_version('MateMenu', '2.0')
 from gi.repository import GLib, Gio
 from gi.repository import Gtk, Gdk, GdkPixbuf
+from gi.repository import MateMenu
 import cgi
 import os
 import gettext
@@ -40,7 +41,6 @@ from Mozo.MenuEditor import MenuEditor
 from Mozo import util
 
 class MainWindow:
-    timer = None
     #hack to make editing menu properties work
     allow_update = True
     #drag-and-drop stuff
@@ -77,40 +77,38 @@ class MainWindow:
         keyval, modifier = Gtk.accelerator_parse('F1')
         accelgroup.connect(keyval, modifier, Gtk.AccelFlags.VISIBLE, self.on_help_button_clicked)
         self.tree.get_object('mainwindow').add_accel_group(accelgroup)
+        self.main_window = self.tree.get_object('mainwindow')
 
     def run(self):
         self.loadMenus()
-        self.editor.applications.tree.add_monitor(self.menuChanged, None)
-        self.editor.settings.tree.add_monitor(self.menuChanged, None)
+        self.editor.applications.tree.connect("changed", self.menuChanged)
+        self.editor.settings.tree.connect("changed", self.menuChanged)
         self.tree.get_object('mainwindow').show_all()
         Gtk.main()
 
     def menuChanged(self, *a):
-        if self.timer:
-            GLib.Source.remove(self.timer)
-            self.timer = None
-        self.timer = GLib.timeout_add(3, self.loadUpdates)
+        self.loadUpdates()
 
     def loadUpdates(self):
         if not self.allow_update:
-            self.timer = None
             return False
         menu_tree = self.tree.get_object('menu_tree')
         item_tree = self.tree.get_object('item_tree')
         items, iter = item_tree.get_selection().get_selected()
         update_items = False
-        item_id, separator_path = None, None
+        update_type = None
+        item_id = None
         if iter:
             update_items = True
-            if items[iter][3].get_type() == matemenu.TYPE_DIRECTORY:
+            if isinstance(items[iter][3], MateMenu.TreeDirectory):
                 item_id = os.path.split(items[iter][3].get_desktop_file_path())[1]
-                update_items = True
-            elif items[iter][3].get_type() == matemenu.TYPE_ENTRY:
+                update_type = MateMenu.TreeItemType.DIRECTORY
+            elif isinstance(items[iter][3], MateMenu.TreeEntry):
                 item_id = items[iter][3].get_desktop_file_id()
-                update_items = True
-            elif items[iter][3].get_type() == matemenu.TYPE_SEPARATOR:
-                item_id = items.get_path(iter).to_string()
-                update_items = True
+                update_type = MateMenu.TreeItemType.ENTRY
+            elif isinstance(items[iter][3], MateMenu.TreeSeparator):
+                item_id = items.get_path(iter)
+                update_type = MateMenu.TreeItemType.SEPARATOR
         menus, iter = menu_tree.get_selection().get_selected()
         update_menus = False
         menu_id = None
@@ -132,12 +130,13 @@ class MainWindow:
             i = 0
             for item in item_tree.get_model():
                 found = False
-                if item[3].get_type() == matemenu.TYPE_ENTRY and item[3].get_desktop_file_id() == item_id:
-                    found = True
-                if item[3].get_type() == matemenu.TYPE_DIRECTORY and item[3].get_desktop_file_path():
-                    if os.path.split(item[3].get_desktop_file_path())[1] == item_id:
+                if update_type != MateMenu.TreeItemType.SEPARATOR:
+                    if isinstance (item[3], MateMenu.TreeEntry) and item[3].get_desktop_file_id() == item_id:
                         found = True
-                if item[3].get_type() == matemenu.TYPE_SEPARATOR:
+                    if isinstance (item[3], MateMenu.TreeDirectory) and item[3].get_desktop_file_path() and update_type == MateMenu.TreeItemType.DIRECTORY:
+                        if os.path.split(item[3].get_desktop_file_path())[1] == item_id:
+                            found = True
+                if isinstance(item[3], MateMenu.TreeSeparator):
                     if not isinstance(item_id, tuple):
                         #we may not skip the increment via "continue"
                         i += 1
@@ -155,7 +154,6 @@ class MainWindow:
                     self.on_item_tree_cursor_changed(item_tree)
                     break
                 i += 1
-        self.timer = None
         return False
 
     def findMenu(self, menus, path, iter, menu_id):
@@ -179,15 +177,16 @@ class MainWindow:
         column.set_spacing(4)
         cell = Gtk.CellRendererPixbuf()
         column.pack_start(cell, False)
-        column.set_attributes(cell, pixbuf=0)
+        column.add_attribute(cell, 'pixbuf', 0)
         cell = Gtk.CellRendererText()
         cell.set_fixed_size(-1, 25)
         column.pack_start(cell, True)
-        column.set_attributes(cell, markup=1)
+        column.add_attribute(cell, 'markup', 1)
         column.set_sizing(Gtk.TreeViewColumnSizing.FIXED)
         menus.append_column(column)
         menus.enable_model_drag_source(Gdk.ModifierType.BUTTON1_MASK, self.dnd_menus, Gdk.DragAction.COPY)
         menus.enable_model_drag_dest(self.dnd_both, Gdk.DragAction.PRIVATE)
+        menus.get_selection().set_mode(Gtk.SelectionMode.BROWSE)
 
     def setupItemTree(self):
         items = self.tree.get_object('item_tree')
@@ -195,7 +194,7 @@ class MainWindow:
         cell = Gtk.CellRendererToggle()
         cell.connect('toggled', self.on_item_tree_show_toggled)
         column.pack_start(cell, True)
-        column.set_attributes(cell, active=0)
+        column.add_attribute(cell, 'active', 0)
         #hide toggle for separators
         column.set_cell_data_func(cell, self._cell_data_toggle_func)
         items.append_column(column)
@@ -203,11 +202,11 @@ class MainWindow:
         column.set_spacing(4)
         cell = Gtk.CellRendererPixbuf()
         column.pack_start(cell, False)
-        column.set_attributes(cell, pixbuf=1)
+        column.add_attribute(cell, 'pixbuf', 1)
         cell = Gtk.CellRendererText()
         cell.set_fixed_size(-1, 25)
         column.pack_start(cell, True)
-        column.set_attributes(cell, markup=2)
+        column.add_attribute(cell, 'markup', 2)
         items.append_column(column)
         self.item_store = Gtk.ListStore(bool, GdkPixbuf.Pixbuf, str, object)
         items.set_model(self.item_store)
@@ -215,7 +214,7 @@ class MainWindow:
         items.enable_model_drag_dest(self.dnd_items, Gdk.DragAction.PRIVATE)
 
     def _cell_data_toggle_func(self, tree_column, renderer, model, treeiter, data=None):
-        if model[treeiter][3].get_type() == matemenu.TYPE_SEPARATOR:
+        if isinstance(model[treeiter][3], MateMenu.TreeSeparator):
             renderer.set_property('visible', False)
         else:
             renderer.set_property('visible', True)
@@ -254,22 +253,19 @@ class MainWindow:
     def loadItems(self, menu, menu_path):
         self.item_store.clear()
         for item, show in self.editor.getItems(menu):
-            menu_icon = None
-            if item.get_type() == matemenu.TYPE_SEPARATOR:
+            icon = util.getIcon(item)
+            if isinstance(item, MateMenu.TreeSeparator):
                 name = '---'
-                icon = None
-            elif item.get_type() == matemenu.TYPE_ENTRY:
+            elif isinstance(item, MateMenu.TreeEntry):
                 if show:
-                    name = cgi.escape(item.get_display_name())
+                    name = cgi.escape(item.get_app_info().get_display_name())
                 else:
-                    name = '<small><i>' + cgi.escape(item.get_display_name()) + '</i></small>'
-                icon = util.getIcon(item)
+                    name = '<small><i>' + cgi.escape(item.get_app_info().get_display_name()) + '</i></small>'
             else:
                 if show:
                     name = cgi.escape(item.get_name())
                 else:
                     name = '<small><i>' + cgi.escape(item.get_name()) + '</i></small>'
-                icon = util.getIcon(item)
             self.item_store.append((show, icon, name, item))
 
     #this is a little timeout callback to insert new items after
@@ -346,11 +342,11 @@ class MainWindow:
         if not iter:
             return
         item = items[iter][3]
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        if isinstance(item, MateMenu.TreeEntry):
             self.editor.deleteItem(item)
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             self.editor.deleteMenu(item)
-        elif item.get_type() == matemenu.TYPE_SEPARATOR:
+        elif isinstance(item, MateMenu.TreeSeparator):
             self.editor.deleteSeparator(item)
 
     def on_edit_revert_to_original_activate(self, menu):
@@ -359,9 +355,9 @@ class MainWindow:
         if not iter:
             return
         item = items[iter][3]
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        if isinstance(item, MateMenu.TreeEntry):
             self.editor.revertItem(item)
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             self.editor.revertMenu(item)
 
     def on_edit_properties_activate(self, menu):
@@ -370,13 +366,13 @@ class MainWindow:
         if not iter:
             return
         item = items[iter][3]
-        if item.get_type() not in (matemenu.TYPE_ENTRY, matemenu.TYPE_DIRECTORY):
+        if not isinstance(item, MateMenu.TreeEntry) and not isinstance(item, MateMenu.TreeDirectory):
             return
 
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        if isinstance(item, MateMenu.TreeEntry):
             file_path = os.path.join(util.getUserItemPath(), item.get_desktop_file_id())
             file_type = 'Item'
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             file_path = os.path.join(util.getUserDirectoryPath(), os.path.split(item.get_desktop_file_path())[1])
             file_type = 'Menu'
 
@@ -391,7 +387,10 @@ class MainWindow:
             GLib.timeout_add(100, self.waitForEditProcess, process, file_path)
 
     def on_menu_tree_cursor_changed(self, treeview):
-        menus, iter = treeview.get_selection().get_selected()
+        selection = treeview.get_selection()
+        if selection is None:
+            return
+        menus, iter = selection.get_selected()
         if iter is None:
             return
         menu_path = menus.get_path(iter)
@@ -404,6 +403,8 @@ class MainWindow:
         self.tree.get_object('move_up_button').set_sensitive(False)
         self.tree.get_object('move_down_button').set_sensitive(False)
         self.tree.get_object('new_separator_button').set_sensitive(False)
+        self.tree.get_object('properties_button').set_sensitive(False)
+        self.tree.get_object('delete_button').set_sensitive(False)
 
     def on_menu_tree_drag_data_get(self, treeview, context, selection, target_id, etime):
         menus, iter = treeview.get_selection().get_selected()
@@ -423,12 +424,12 @@ class MainWindow:
                     return False
                 item = self.drag_data
                 new_parent = menus[path][2]
-                if item.get_type() == matemenu.TYPE_ENTRY:
+                if isinstance(item, MateMenu.TreeEntry):
                     self.editor.copyItem(item, new_parent)
-                elif item.get_type() == matemenu.TYPE_DIRECTORY:
+                elif isinstance(item, MateMenu.TreeDirectory):
                     if not self.editor.moveMenu(item, new_parent):
                         self.loadUpdates()
-                elif item.get_type() == matemenu.TYPE_SEPARATOR:
+                elif isinstance(item, MateMenu.TreeSeparator):
                     self.editor.moveSeparator(item, new_parent)
                 else:
                     context.finish(False, False, etime)
@@ -437,7 +438,7 @@ class MainWindow:
 
     def on_item_tree_show_toggled(self, cell, path):
         item = self.item_store[path][3]
-        if item.get_type() == matemenu.TYPE_SEPARATOR:
+        if isinstance(item, MateMenu.TreeSeparator):
             return
         if self.item_store[path][0]:
             self.editor.setVisible(item, False)
@@ -446,7 +447,10 @@ class MainWindow:
         self.item_store[path][0] = not self.item_store[path][0]
 
     def on_item_tree_cursor_changed(self, treeview):
-        items, iter = treeview.get_selection().get_selected()
+        selection = treeview.get_selection()
+        if selection is None:
+            return
+        items, iter = selection.get_selected()
         if iter is None:
             return
 
@@ -458,7 +462,7 @@ class MainWindow:
         can_revert = self.editor.canRevert(item)
         self.tree.get_object('edit_revert_to_original').set_sensitive(can_revert)
 
-        can_edit = not item.get_type() == matemenu.TYPE_SEPARATOR
+        can_edit = not isinstance(item, MateMenu.TreeSeparator)
         self.tree.get_object('edit_properties').set_sensitive(can_edit)
         self.tree.get_object('properties_button').set_sensitive(can_edit)
 
@@ -517,7 +521,7 @@ class MainWindow:
                 path, position = drop_info
                 target = items[path][3]
                 # move the item to the directory, if the item was dropped into it
-                if (target.get_type() == matemenu.TYPE_DIRECTORY) and (position in types_into):
+                if isinstance(target, MateMenu.TreeDirectory) and (position in types_into):
                     # append the selected item to the choosen menu
                     destination = target
                 elif position in types_before:
@@ -530,12 +534,12 @@ class MainWindow:
             else:
                 path = (len(items) - 1,)
                 after = items[path][3]
-            if item.get_type() == matemenu.TYPE_ENTRY:
+            if isinstance(item, MateMenu.TreeEntry):
                 self.editor.moveItem(item, destination, before, after)
-            elif item.get_type() == matemenu.TYPE_DIRECTORY:
+            elif isinstance(item, MateMenu.TreeDirectory):
                 if not self.editor.moveMenu(item, destination, before, after):
                     self.loadUpdates()
-            elif item.get_type() == matemenu.TYPE_SEPARATOR:
+            elif isinstance(item, MateMenu.TreeSeparator):
                 self.editor.moveSeparator(item, destination, before, after)
             context.finish(True, True, etime)
         elif str(selection.get_target()) == 'text/plain':
@@ -587,12 +591,12 @@ class MainWindow:
         if path.get_indices()[0] == 0:
             return
         item = items[path][3]
-        before = items[(path[0] - 1,)][3]
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        before = items[(path.get_indices()[0] - 1,)][3]
+        if isinstance(item, MateMenu.TreeEntry):
             self.editor.moveItem(item, item.get_parent(), before=before)
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             self.editor.moveMenu(item, item.get_parent(), before=before)
-        elif item.get_type() == matemenu.TYPE_SEPARATOR:
+        elif isinstance(item, MateMenu.TreeSeparator):
             self.editor.moveSeparator(item, item.get_parent(), before=before)
 
     def on_move_down_button_clicked(self, button):
@@ -606,11 +610,11 @@ class MainWindow:
             return
         item = items[path][3]
         after = items[path][3]
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        if isinstance(item, MateMenu.TreeEntry):
             self.editor.moveItem(item, item.get_parent(), after=after)
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             self.editor.moveMenu(item, item.get_parent(), after=after)
-        elif item.get_type() == matemenu.TYPE_SEPARATOR:
+        elif isinstance(item, MateMenu.TreeSeparator):
             self.editor.moveSeparator(item, item.get_parent(), after=after)
 
     def on_mainwindow_undo(self, accelgroup, window, keyval, modifier):
diff --git a/Mozo/MenuEditor.py b/Mozo/MenuEditor.py
index 62832e6..17315da 100644
--- a/Mozo/MenuEditor.py
+++ b/Mozo/MenuEditor.py
@@ -22,8 +22,9 @@ import re
 import xml.dom.minidom
 import xml.parsers.expat
 import locale
-import matemenu
-from gi.repository import GLib
+import gi
+gi.require_version('MateMenu', '2.0')
+from gi.repository import MateMenu, GLib
 from Mozo import util
 
 class Menu:
@@ -32,41 +33,56 @@ class Menu:
     path = None
     dom = None
 
-class MenuEditor:
+class MenuEditor(object):
     def __init__(self):
         self.locale = locale.getdefaultlocale()[0]
-        self.__loadMenus()
         self.__undo = []
         self.__redo = []
+        self.applications = Menu()
+        self.applications.tree = MateMenu.Tree.new('mate-applications.menu', MateMenu.TreeFlags.SHOW_EMPTY|MateMenu.TreeFlags.INCLUDE_EXCLUDED|MateMenu.TreeFlags.INCLUDE_NODISPLAY|MateMenu.TreeFlags.SHOW_ALL_SEPARATORS|MateMenu.TreeFlags.SORT_DISPLAY_NAME)
+        self.applications.visible_tree = MateMenu.Tree.new('mate-applications.menu', MateMenu.TreeFlags.SORT_DISPLAY_NAME)
+        self.applications.tree.sort_key = MateMenu.TreeFlags.SORT_DISPLAY_NAME
+        self.applications.visible_tree.sort_key = MateMenu.TreeFlags.SORT_DISPLAY_NAME
+        self.applications.tree.connect('changed', self.menuChanged)
 
+        self.settings = Menu()
+        self.settings.tree = MateMenu.Tree.new('mate-settings.menu', MateMenu.TreeFlags.SHOW_EMPTY|MateMenu.TreeFlags.INCLUDE_EXCLUDED|MateMenu.TreeFlags.INCLUDE_NODISPLAY|MateMenu.TreeFlags.SHOW_ALL_SEPARATORS|MateMenu.TreeFlags.SORT_DISPLAY_NAME)
+        self.settings.visible_tree = MateMenu.Tree.new('mate-settings.menu', MateMenu.TreeFlags.SORT_DISPLAY_NAME)
+        self.settings.tree.sort_key = MateMenu.TreeFlags.SORT_DISPLAY_NAME
+        self.settings.visible_tree.sort_key = MateMenu.TreeFlags.SORT_DISPLAY_NAME
+        self.settings.tree.connect('changed', self.menuChanged)
+        self.load()
+        self.__loadMenus()
 
     def __loadMenus(self):
-        self.applications = Menu()
-        self.applications.tree = matemenu.lookup_tree('mate-applications.menu', matemenu.FLAGS_SHOW_EMPTY|matemenu.FLAGS_INCLUDE_EXCLUDED|matemenu.FLAGS_INCLUDE_NODISPLAY|matemenu.FLAGS_SHOW_ALL_SEPARATORS)
-        self.applications.visible_tree = matemenu.lookup_tree('mate-applications.menu')
-        self.applications.tree.sort_key = matemenu.SORT_DISPLAY_NAME
-        self.applications.visible_tree.sort_key = matemenu.SORT_DISPLAY_NAME
-        self.applications.path = os.path.join(util.getUserMenuPath(), self.applications.tree.get_menu_file())
+        self.applications.path = os.path.join(util.getUserMenuPath(), self.applications.tree.props.menu_basename)
         try:
             self.applications.dom = xml.dom.minidom.parse(self.applications.path)
         except (IOError, xml.parsers.expat.ExpatError):
             self.applications.dom = xml.dom.minidom.parseString(util.getUserMenuXml(self.applications.tree))
         util.removeWhitespaceNodes(self.applications.dom)
 
-        self.settings = Menu()
-        self.settings.tree = matemenu.lookup_tree('mate-settings.menu', matemenu.FLAGS_SHOW_EMPTY|matemenu.FLAGS_INCLUDE_EXCLUDED|matemenu.FLAGS_INCLUDE_NODISPLAY|matemenu.FLAGS_SHOW_ALL_SEPARATORS)
-        self.settings.visible_tree = matemenu.lookup_tree('mate-settings.menu')
-        self.settings.tree.sort_key = matemenu.SORT_DISPLAY_NAME
-        self.settings.visible_tree.sort_key = matemenu.SORT_DISPLAY_NAME
-        self.settings.path = os.path.join(util.getUserMenuPath(), self.settings.tree.get_menu_file())
+        self.settings.path = os.path.join(util.getUserMenuPath(), self.settings.tree.props.menu_basename)
         try:
             self.settings.dom = xml.dom.minidom.parse(self.settings.path)
         except (IOError, xml.parsers.expat.ExpatError):
             self.settings.dom = xml.dom.minidom.parseString(util.getUserMenuXml(self.settings.tree))
         util.removeWhitespaceNodes(self.settings.dom)
-
         self.save(True)
 
+    def load(self):
+        if not self.applications.tree.load_sync():
+            raise ValueError("can not load menu tree %r" % (self.applications.tree.props.menu_basename,))
+        if not self.settings.tree.load_sync():
+            raise ValueError("can not load menu tree %r" % (self.settings.tree.props.menu_basename,))
+        if not self.applications.visible_tree.load_sync():
+            raise ValueError("can not load menu tree %r" % (self.applications.visible_tree.props.menu_basename,))
+        if not self.settings.visible_tree.load_sync():
+            raise ValueError("can not load menu tree %r" % (self.settings.visible_tree.props.menu_basename,))
+
+    def menuChanged(self, *a):
+        self.load()
+
     def save(self, from_loading=False):
         for menu in ('applications', 'settings'):
             with codecs.open(getattr(self, menu).path, 'w', 'utf-8') as f:
@@ -91,8 +107,8 @@ class MenuEditor:
     def revert(self):
         for name in ('applications', 'settings'):
             menu = getattr(self, name)
-            self.revertTree(menu.tree.root)
-            path = os.path.join(util.getUserMenuPath(), menu.tree.get_menu_file())
+            self.revertTree(menu.tree.get_root_directory())
+            path = os.path.join(util.getUserMenuPath(), menu.tree.props.menu_basename)
             try:
                 os.unlink(path)
             except OSError:
@@ -108,11 +124,16 @@ class MenuEditor:
         self.save()
 
     def revertTree(self, menu):
-        for child in menu.get_contents():
-            if child.get_type() == matemenu.TYPE_DIRECTORY:
-                self.revertTree(child)
-            elif child.get_type() == matemenu.TYPE_ENTRY:
-                self.revertItem(child)
+        item_iter = menu.iter()
+        item_type = item_iter.next()
+        while item_type != MateMenu.TreeItemType.INVALID:
+            if item_type == MateMenu.TreeItemType.DIRECTORY:
+                item = item_iter.get_directory()
+                self.revertTree(item)
+            elif item_type == MateMenu.TreeItemType.ENTRY:
+                item = item_iter.get_entry()
+                self.revertItem(item)
+            item_type = item_iter.next()
         self.revertMenu(menu)
 
     def revertItem(self, item):
@@ -206,29 +227,55 @@ class MenuEditor:
 
     def getMenus(self, parent=None):
         if parent is None:
-            yield self.applications.tree.root
-            yield self.settings.tree.root
+            yield self.applications.tree.get_root_directory()
+            yield self.settings.tree.get_root_directory()
         else:
-            for menu in parent.get_contents():
-                if menu.get_type() == matemenu.TYPE_DIRECTORY:
-                    yield (menu, self.__isVisible(menu))
+            item_iter = parent.iter()
+            item_type = item_iter.next()
+            while item_type != MateMenu.TreeItemType.INVALID:
+                if item_type == MateMenu.TreeItemType.DIRECTORY:
+                    item = item_iter.get_directory()
+                    yield (item, self.__isVisible(item))
+                item_type = item_iter.next()
+
+    def getContents(self, item):
+        contents = []
+        item_iter = item.iter()
+        item_type = item_iter.next()
+
+        while item_type != MateMenu.TreeItemType.INVALID:
+            item = None
+            if item_type == MateMenu.TreeItemType.DIRECTORY:
+                item = item_iter.get_directory()
+            elif item_type == MateMenu.TreeItemType.ENTRY:
+                item = item_iter.get_entry()
+            elif item_type == MateMenu.TreeItemType.HEADER:
+                item = item_iter.get_header()
+            elif item_type == MateMenu.TreeItemType.ALIAS:
+                item = item_iter.get_alias()
+            elif item_type == MateMenu.TreeItemType.SEPARATOR:
+                item = item_iter.get_separator()
+            if item:
+                contents.append(item)
+            item_type = item_iter.next()
+        return contents
 
     def getItems(self, menu):
-        for item in menu.get_contents():
-            if item.get_type() == matemenu.TYPE_SEPARATOR:
-                yield (item, True)
+        for item in self.getContents(menu):
+            if isinstance(item, MateMenu.TreeSeparator):
+                yield(item, True)
             else:
-                if item.get_type() == matemenu.TYPE_ENTRY and item.get_desktop_file_id()[-19:] == '-usercustom.desktop':
-                    continue
+                if isinstance(item, MateMenu.TreeEntry) and item.get_desktop_file_id()[-19:] == '-usercustom.desktop':
+                     continue
                 yield (item, self.__isVisible(item))
 
     def canRevert(self, item):
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        if isinstance(item, MateMenu.TreeEntry):
             if util.getItemPath(item.get_desktop_file_id()) is not None:
                 path = util.getUserItemPath()
                 if os.path.isfile(os.path.join(path, item.get_desktop_file_id())):
                     return True
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             if item.get_desktop_file_path():
                 file_id = os.path.split(item.get_desktop_file_path())[1]
             else:
@@ -241,7 +288,7 @@ class MenuEditor:
 
     def setVisible(self, item, visible):
         dom = self.__getMenu(item).dom
-        if item.get_type() == matemenu.TYPE_ENTRY:
+        if isinstance(item, MateMenu.TreeEntry):
             self.__addUndo([self.__getMenu(item), item])
             menu_xml = self.__getXmlMenu(self.__getPath(item.get_parent()), dom.documentElement, dom)
             if visible:
@@ -250,10 +297,12 @@ class MenuEditor:
             else:
                 self.__addXmlFilename(menu_xml, dom, item.get_desktop_file_id(), 'Exclude')
             self.__addXmlTextElement(menu_xml, 'AppDir', util.getUserItemPath(), dom)
-        elif item.get_type() == matemenu.TYPE_DIRECTORY:
+        elif isinstance(item, MateMenu.TreeDirectory):
             self.__addUndo([self.__getMenu(item), item])
+            item_iter = item.iter()
+            first_child_type = item_iter.next()
             #don't mess with it if it's empty
-            if len(item.get_contents()) == 0:
+            if first_child_type == MateMenu.TreeItemType.INVALID:
                 return
             menu_xml = self.__getXmlMenu(self.__getPath(item), dom.documentElement, dom)
             for node in self.__getXmlNodesByName(['Deleted', 'NotDeleted'], menu_xml):
@@ -264,7 +313,7 @@ class MenuEditor:
 
     def createItem(self, parent, before, after, **kwargs):
         file_id = self.__writeItem(None, **kwargs)
-        self.insertExternalItem(file_id, parent.menu_id, before, after)
+        self.insertExternalItem(file_id, parent.get_menu_id(), before, after)
 
     def insertExternalItem(self, file_id, parent_id, before=None, after=None):
         parent = self.__findMenu(parent_id)
@@ -292,7 +341,8 @@ class MenuEditor:
 
     def editItem(self, item, icon, name, comment, command, use_term, parent=None, final=True):
         #if nothing changed don't make a user copy
-        if icon == item.get_icon() and name == item.get_display_name() and comment == item.get_comment() and command == item.get_exec() and use_term == item.get_launch_in_terminal():
+        app_info = item.get_app_info()
+        if icon == app_info.get_icon() and name == app_info.get_display_name() and comment == item.get_comment() and command == item.get_exec() and use_term == item.get_launch_in_terminal():
             return
         #hack, item.get_parent() seems to fail a lot
         if not parent:
@@ -328,7 +378,8 @@ class MenuEditor:
 
         util.fillKeyFile(keyfile, dict(Categories=[], Hidden=False))
 
-        file_id = util.getUniqueFileId(item.get_name().replace(os.sep, '-'), '.desktop')
+        app_info = item.get_app_info()
+        file_id = util.getUniqueFileId(app_info.get_name().replace(os.sep, '-'), '.desktop')
         out_path = os.path.join(util.getUserItemPath(), file_id)
 
         contents, length = keyfile.to_data()
@@ -409,7 +460,7 @@ class MenuEditor:
 
     def deleteSeparator(self, item):
         parent = item.get_parent()
-        contents = parent.get_contents()
+        contents = self.getContents(parent)
         contents.remove(item)
         layout = self.__createLayout(contents)
         dom = self.__getMenu(parent).dom
@@ -435,13 +486,13 @@ class MenuEditor:
                         file_path = util.getDirectoryPath(item[1])
                 else:
                     continue
-            elif item.get_type() == matemenu.TYPE_DIRECTORY:
+            elif isinstance(item, MateMenu.TreeDirectory):
                 if item.get_desktop_file_path() is None:
                     continue
                 file_path = os.path.join(util.getUserDirectoryPath(), os.path.split(item.get_desktop_file_path())[1])
                 if not os.path.isfile(file_path):
                     file_path = item.get_desktop_file_path()
-            elif item.get_type() == matemenu.TYPE_ENTRY:
+            elif isinstance(item, MateMenu.TreeEntry):
                 file_path = os.path.join(util.getUserItemPath(), item.get_desktop_file_id())
                 if not os.path.isfile(file_path):
                     file_path = item.get_desktop_file_path()
@@ -465,39 +516,45 @@ class MenuEditor:
                     root = root.get_parent()
                 else:
                     break
-        if root.menu_id == self.applications.tree.root.menu_id:
+        if root.get_menu_id() == self.applications.tree.get_root_directory().get_menu_id():
             return self.applications
         return self.settings
 
     def __findMenu(self, menu_id, parent=None):
         if parent is None:
-            menu = self.__findMenu(menu_id, self.applications.tree.root)
+            menu = self.__findMenu(menu_id, self.applications.tree.get_root_directory())
             if menu is not None:
                 return menu
             else:
-                return self.__findMenu(menu_id, self.settings.tree.root)
-        if menu_id == self.applications.tree.root.menu_id:
-            return self.applications.tree.root
-        if menu_id == self.settings.tree.root.menu_id:
-            return self.settings.tree.root
-        for item in parent.get_contents():
-            if item.get_type() == matemenu.TYPE_DIRECTORY:
-                if item.menu_id == menu_id:
+                return self.__findMenu(menu_id, self.settings.tree.get_root_directory())
+        if menu_id == self.applications.tree.get_root_directory().get_menu_id():
+            return self.applications.tree.get_root_directory()
+        if menu_id == self.settings.tree.get_root_directory().get_menu_id():
+            return self.settings.tree.get_root_directory()
+
+        item_iter = parent.iter()
+        item_type = item_iter.next()
+        while item_type != MateMenu.TreeItemType.INVALID:
+            if item_type == MateMenu.TreeItemType.DIRECTORY:
+                item = item_iter.get_directory()
+                if item.get_menu_id() == menu_id:
                     return item
                 menu = self.__findMenu(menu_id, item)
                 if menu is not None:
                     return menu
+            item_type = item_iter.next()
 
     def __isVisible(self, item):
-        if item.get_type() == matemenu.TYPE_ENTRY:
-            return not (item.get_is_excluded() or item.get_is_nodisplay())
+        if isinstance(item, MateMenu.TreeEntry):
+            app_info = item.get_app_info()
+            return not (item.get_is_excluded() or app_info.get_nodisplay())
         menu = self.__getMenu(item)
         if menu == self.applications:
-            root = self.applications.visible_tree.root
+            root = self.applications.visible_tree.get_root_directory()
         elif menu == self.settings:
-            root = self.settings.visible_tree.root
-        if item.get_type() == matemenu.TYPE_DIRECTORY:
-            if self.__findMenu(item.menu_id, root) is None:
+            root = self.settings.visible_tree.get_root_directory()
+        if isinstance(item, MateMenu.TreeDirectory):
+            if self.__findMenu(item.get_menu_id(), root) is None:
                 return False
         return True
 
@@ -682,11 +739,11 @@ class MenuEditor:
                     layout.parseMenuname(item[1])
                 elif item[0] == 'Item':
                     layout.parseFilename(item[1])
-            elif item.get_type() == matemenu.TYPE_DIRECTORY:
+            elif isinstance(item, MateMenu.TreeDirectory):
                 layout.parseMenuname(item.get_menu_id())
-            elif item.get_type() == matemenu.TYPE_ENTRY:
+            elif isinstance(item, MateMenu.TreeEntry):
                 layout.parseFilename(item.get_desktop_file_id())
-            elif item.get_type() == matemenu.TYPE_SEPARATOR:
+            elif isinstance(item, MateMenu.TreeSeparator):
                 layout.parseSeparator()
         layout.order.append(['Merge', 'files'])
         return layout
@@ -695,20 +752,24 @@ class MenuEditor:
         xml_parent = self.__getXmlMenu(self.__getPath(parent), dom.documentElement, dom)
         self.__addXmlFilename(xml_parent, dom, file_id, 'Include')
 
+    def moveItem(self, parent, item, before=None, after=None):
+        self.__positionItem(parent, item, before=before, after=after)
+        self.save()
+
     def __positionItem(self, parent, item, before=None, after=None):
+        contents = self.getContents(parent)
         if after:
-            index = parent.contents.index(after) + 1
+            index = contents.index(after) + 1
         elif before:
-            index = parent.contents.index(before)
+            index = contents.index(before)
         else:
             # append the item to the list
-            index = len(parent.contents)
-        contents = parent.contents
+            index = len(contents)
         #if this is a move to a new parent you can't remove the item
         if item in contents:
             # decrease the destination index, if we shorten the list
             if (before and (contents.index(item) < index)) \
-                or (after and (contents.index(item) < index - 1)):
+                    or (after and (contents.index(item) < index - 1)):
                 index -= 1
             contents.remove(item)
         contents.insert(index, item)
diff --git a/Mozo/util.py b/Mozo/util.py
index bb9e1c6..992731d 100644
--- a/Mozo/util.py
+++ b/Mozo/util.py
@@ -18,24 +18,26 @@
 
 import os
 import xml.dom.minidom
-import matemenu
 import gi
+gi.require_version('Gtk', '3.0')
+gi.require_version('MateMenu', '2.0')
 from collections import Sequence
 from gi.repository import GLib, Gtk, Gdk, GdkPixbuf
+from gi.repository import MateMenu
 
 DESKTOP_GROUP = GLib.KEY_FILE_DESKTOP_GROUP
 KEY_FILE_FLAGS = GLib.KeyFileFlags.KEEP_COMMENTS | GLib.KeyFileFlags.KEEP_TRANSLATIONS
 
 def fillKeyFile(keyfile, items):
-    for key, item in items.iteritems():
+    for key, item in items.items():
         if item is None:
             continue
 
         if isinstance(item, bool):
             keyfile.set_boolean(DESKTOP_GROUP, key, item)
-        elif isinstance(item, Sequence):
+        elif isinstance(item, Sequence) and not isinstance(item, (str, bytes, bytearray)):
             keyfile.set_string_list(DESKTOP_GROUP, key, item)
-        elif isinstance(item, basestring):
+        elif isinstance(item, str):
             keyfile.set_string(DESKTOP_GROUP, key, item)
 
 def getUniqueFileId(name, extension):
@@ -123,49 +125,55 @@ def getSystemMenuPath(file_id):
     return None
 
 def getUserMenuXml(tree):
-    system_file = getSystemMenuPath(tree.get_menu_file())
-    name = tree.root.get_menu_id()
+    system_file = getSystemMenuPath(os.path.basename(tree.get_canonical_menu_path()))
+    name = tree.get_root_directory().get_menu_id()
     menu_xml = "<!DOCTYPE Menu PUBLIC '-//freedesktop//DTD Menu 1.0//EN' 'http://standards.freedesktop.org/menu-spec/menu-1.0.dtd'>\n"
     menu_xml += "<Menu>\n  <Name>" + name + "</Name>\n  "
     menu_xml += "<MergeFile type=\"parent\">" + system_file +       "</MergeFile>\n</Menu>\n"
     return menu_xml
 
 def getIcon(item):
-    pixbuf, path = None, None
-    if item is None:
-        return None
-    if isinstance(item, str):
+    iconName = None
+    gicon = None
+    if isinstance(item, MateMenu.TreeDirectory):
+        gicon = item.get_icon()
+    elif isinstance(item, MateMenu.TreeEntry):
+        app_info = item.get_app_info()
+        gicon = app_info.get_icon()
+    elif isinstance(item, str):
         iconName = item
-    else:
-        iconName = item.get_icon()
     if iconName and not '/' in iconName and iconName[-3:] in ('png', 'svg', 'xpm'):
         iconName = iconName[:-4]
+
+    pixbuf = None
     icon_theme = Gtk.IconTheme.get_default()
-    try:
-        pixbuf = icon_theme.load_icon(iconName, 24, 0)
-        path = icon_theme.lookup_icon(iconName, 24, 0).get_filename()
-    except:
-        if iconName and '/' in iconName:
-            try:
-                pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(iconName, 24, 24)
-                path = iconName
-            except:
-                pass
-        if pixbuf is None:
-            if item.get_type() == matemenu.TYPE_DIRECTORY:
-                iconName = 'mate-fs-directory'
-            elif item.get_type() == matemenu.TYPE_ENTRY:
-                iconName = 'application-default-icon'
-            try:
-                pixbuf = icon_theme.load_icon(iconName, 24, 0)
-                path = icon_theme.lookup_icon(iconName, 24, 0).get_filename()
-            except:
-                return None
+    if gicon:
+        info = icon_theme.lookup_by_gicon(gicon, 24, 0)
+        try:
+            pixbuf = info.load_icon()
+        except:
+            pass
+    elif iconName is not None:
+        try:
+            pixbuf = icon_theme.load_icon(iconName, 24, 0)
+        except:
+            if iconName and '/' in iconName:
+                try:
+                    pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(iconName, 24, 24)
+                except:
+                    pass
+    # fallback to use image-missing icon
+    if pixbuf is None:
+        try:
+            pixbuf = icon_theme.load_icon('image-missing', 24, 0)
+        except:
+            pass
     if pixbuf is None:
         return None
-    if pixbuf.get_width() != 24 or pixbuf.get_height() != 24:
-        pixbuf = pixbuf.scale_simple(24, 24, GdkPixbuf.InterpType.HYPER)
-    return pixbuf
+    else:
+        if pixbuf.get_width() != 24 or pixbuf.get_height() != 24:
+            pixbuf = pixbuf.scale_simple(24, 24, GdkPixbuf.InterpType.HYPER)
+        return pixbuf
 
 def removeWhitespaceNodes(node):
     remove_list = []
diff --git a/acinclude.m4 b/acinclude.m4
index 1227123..8babc67 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -71,7 +71,7 @@ AC_DEFUN([AM_PATH_PYTHON_VERSION],
   dnl library.
 
   AC_CACHE_CHECK([for $am_display_PYTHON version], [am_cv_python_version],
-    [am_cv_python_version=`$PYTHON -c "import sys; print sys.version[[:3]]"`])
+    [am_cv_python_version=`$PYTHON -c "import sys; print(sys.version[[:3]])"`])
   AC_SUBST([PYTHON_VERSION], [$am_cv_python_version])
 
   dnl Use the values of $prefix and $exec_prefix for the corresponding
@@ -86,7 +86,7 @@ AC_DEFUN([AM_PATH_PYTHON_VERSION],
   dnl to know which OS platform Python thinks this is.
 
   AC_CACHE_CHECK([for $am_display_PYTHON platform], [am_cv_python_platform],
-    [am_cv_python_platform=`$PYTHON -c "import sys; print sys.platform"`])
+    [am_cv_python_platform=`$PYTHON -c "import sys; print(sys.platform)"`])
   AC_SUBST([PYTHON_PLATFORM], [$am_cv_python_platform])
 
 
@@ -101,7 +101,7 @@ AC_DEFUN([AM_PATH_PYTHON_VERSION],
   dnl doesn't work.
   AC_CACHE_CHECK([for $am_display_PYTHON script directory],
     [am_cv_python_pythondir],
-    [am_cv_python_pythondir=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib(0,0,prefix='$PYTHON_PREFIX')" 2>/dev/null ||
+    [am_cv_python_pythondir=`$PYTHON -c "from distutils import sysconfig; print(sysconfig.get_python_lib(0,0,prefix='$PYTHON_PREFIX'))" 2>/dev/null ||
      echo "$PYTHON_PREFIX/lib/python$PYTHON_VERSION/site-packages"`])
   AC_SUBST([pythondir], [$am_cv_python_pythondir])
 
@@ -118,7 +118,7 @@ AC_DEFUN([AM_PATH_PYTHON_VERSION],
   dnl doesn't work.
   AC_CACHE_CHECK([for $am_display_PYTHON extension module directory],
     [am_cv_python_pyexecdir],
-    [am_cv_python_pyexecdir=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_lib(1,0,prefix='$PYTHON_EXEC_PREFIX')" 2>/dev/null ||
+    [am_cv_python_pyexecdir=`$PYTHON -c "from distutils import sysconfig; print(sysconfig.get_python_lib(1,0,prefix='$PYTHON_EXEC_PREFIX'))" 2>/dev/null ||
      echo "${PYTHON_EXEC_PREFIX}/lib/python${PYTHON_VERSION}/site-packages"`])
   AC_SUBST([pyexecdir], [$am_cv_python_pyexecdir])
 
diff --git a/configure.ac b/configure.ac
index 8348533..c35cf4c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,9 +18,9 @@ AC_DEFINE_UNQUOTED(GETTEXT_PACKAGE, "$GETTEXT_PACKAGE", [Gettext package])
 AM_GLIB_GNU_GETTEXT
 IT_PROG_INTLTOOL([0.40.0])
 
-AM_PATH_PYTHON_VERSION(2.7, 2.7.0)
+AM_PATH_PYTHON(3.5)
 
-PKG_CHECK_MODULES(MOZO, libmate-menu >= 1.1.0 pygobject-3.0)
+PKG_CHECK_MODULES(MOZO, libmate-menu >= 1.21.0 pygobject-3.0)
 
 AC_ARG_ENABLE(icon-update, AC_HELP_STRING([--disable-icon-update],
 					[Disable icon cache update]))
diff --git a/mozo.in b/mozo.in
index 52b4157..7a42108 100644
--- a/mozo.in
+++ b/mozo.in
@@ -28,7 +28,7 @@ def main():
         version = config.VERSION
     except:
         datadir = './data/'
-        version = '1.7.0'
+        version = '1.21.0'
     app = MainWindow(datadir, version, sys.argv)
     app.run()