path: root/Mozo/MainWindow.py

# -*- coding: utf-8 -*-
#   Mozo Menu Editor - Simple fd.o Compliant Menu Editor
#   Copyright (C) 2006  Travis Watkins
#
#   This library is free software; you can redistribute it and/or
#   modify it under the terms of the GNU Library General Public
#   License as published by the Free Software Foundation; either
#   version 2 of the License, or (at your option) any later version.
#
#   This library is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#   Library General Public License for more details.
#
#   You should have received a copy of the GNU Library General Public
#   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')
from gi.repository import GLib, Gio
from gi.repository import Gtk, Gdk, GdkPixbuf
import cgi
import codecs
import os
import gettext
import subprocess
import urllib
try:
	from Mozo import config
	gettext.bindtextdomain(config.GETTEXT_PACKAGE,config.localedir)
	gettext.textdomain(config.GETTEXT_PACKAGE)
	GETTEXT_PACKAGE = config.GETTEXT_PACKAGE
except:
	GETTEXT_PACKAGE = "mozo"
_ = gettext.gettext
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
	dnd_items = [('MOZO_ITEM_ROW', Gtk.TargetFlags.SAME_APP, 0), ('text/plain', 0, 1)]
	dnd_menus = [('MOZO_MENU_ROW', Gtk.TargetFlags.SAME_APP, 0)]
	dnd_both = [dnd_items[0],] + dnd_menus
	drag_data = None
	edit_pool = []

	def __init__(self, datadir, version, argv):
		self.file_path = datadir
		self.version = version
		self.editor = MenuEditor()
		Gtk.Window.set_default_icon_name('mozo')
		self.tree = Gtk.Builder()
		self.tree.set_translation_domain(GETTEXT_PACKAGE)
		self.tree.add_from_file(os.path.join(self.file_path, 'mozo.ui'))
		self.tree.connect_signals(self)
		self.setupMenuTree()
		self.setupItemTree()
		self.tree.get_object('edit_delete').set_sensitive(False)
		self.tree.get_object('edit_revert_to_original').set_sensitive(False)
		self.tree.get_object('edit_properties').set_sensitive(False)
		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)
		accelgroup = Gtk.AccelGroup()
		keyval, modifier = Gtk.accelerator_parse('<Ctrl>Z')
		accelgroup.connect(keyval, modifier, Gtk.AccelFlags.VISIBLE, self.on_mainwindow_undo)
		keyval, modifier = Gtk.accelerator_parse('<Ctrl><Shift>Z')
		accelgroup.connect(keyval, modifier, Gtk.AccelFlags.VISIBLE, self.on_mainwindow_redo)
		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)

	def run(self):
		self.loadMenus()
		self.editor.applications.tree.add_monitor(self.menuChanged, None)
		self.editor.settings.tree.add_monitor(self.menuChanged, None)
		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)

	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
		if iter:
			update_items = True
			if items[iter][3].get_type() == matemenu.TYPE_DIRECTORY:
				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:
				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
		menus, iter = menu_tree.get_selection().get_selected()
		update_menus = False
		menu_id = None
		if iter:
			if menus[iter][2].get_desktop_file_path():
				menu_id = os.path.split(menus[iter][2].get_desktop_file_path())[1]
			else:
				menu_id = menus[iter][2].get_menu_id()
			update_menus = True
		self.loadMenus()
		#find current menu in new tree
		if update_menus:
			menu_tree.get_model().foreach(self.findMenu, menu_id)
			menus, iter = menu_tree.get_selection().get_selected()
			if iter:
				self.on_menu_tree_cursor_changed(menu_tree)
		#find current item in new list
		if update_items:
			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:
						found = True
				if item[3].get_type() == matemenu.TYPE_SEPARATOR:
					if not isinstance(item_id, tuple):
						#we may not skip the increment via "continue"
						i += 1
						continue
					#separators have no id, have to find them manually
					#probably won't work with two separators together
					if (item_id[0] - 1,) == (i,):
						found = True
					elif (item_id[0] + 1,) == (i,):
						found = True
					elif (item_id[0],) == (i,):
						found = True
				if found:
					item_tree.get_selection().select_path((i,))
					self.on_item_tree_cursor_changed(item_tree)
					break
				i += 1
		self.timer = None
		return False

	def findMenu(self, menus, path, iter, menu_id):
		if not menus[path][2].get_desktop_file_path():
			if menu_id == menus[path][2].get_menu_id():
				menu_tree = self.tree.get_object('menu_tree')
				menu_tree.expand_to_path(path)
				menu_tree.get_selection().select_path(path)
				return True
			return False
		if os.path.split(menus[path][2].get_desktop_file_path())[1] == menu_id:
			menu_tree = self.tree.get_object('menu_tree')
			menu_tree.expand_to_path(path)
			menu_tree.get_selection().select_path(path)
			return True

	def setupMenuTree(self):
		self.menu_store = Gtk.TreeStore(GdkPixbuf.Pixbuf, str, object)
		menus = self.tree.get_object('menu_tree')
		column = Gtk.TreeViewColumn(_('Name'))
		column.set_spacing(4)
		cell = Gtk.CellRendererPixbuf()
		column.pack_start(cell, False)
		column.set_attributes(cell, pixbuf=0)
		cell = Gtk.CellRendererText()
		cell.set_fixed_size(-1, 25)
		column.pack_start(cell, True)
		column.set_attributes(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)

	def setupItemTree(self):
		items = self.tree.get_object('item_tree')
		column = Gtk.TreeViewColumn(_('Show'))
		cell = Gtk.CellRendererToggle()
		cell.connect('toggled', self.on_item_tree_show_toggled)
		column.pack_start(cell, True)
		column.set_attributes(cell, active=0)
		#hide toggle for separators
		column.set_cell_data_func(cell, self._cell_data_toggle_func)
		items.append_column(column)
		column = Gtk.TreeViewColumn(_('Item'))
		column.set_spacing(4)
		cell = Gtk.CellRendererPixbuf()
		column.pack_start(cell, False)
		column.set_attributes(cell, pixbuf=1)
		cell = Gtk.CellRendererText()
		cell.set_fixed_size(-1, 25)
		column.pack_start(cell, True)
		column.set_attributes(cell, markup=2)
		items.append_column(column)
		self.item_store = Gtk.ListStore(bool, GdkPixbuf.Pixbuf, str, object)
		items.set_model(self.item_store)
		items.enable_model_drag_source(Gdk.ModifierType.BUTTON1_MASK, self.dnd_items, Gdk.DragAction.COPY)
		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:
			renderer.set_property('visible', False)
		else:
			renderer.set_property('visible', True)

	def loadMenus(self):
		self.menu_store.clear()
		for menu in self.editor.getMenus():
			iters = [None]*20
			self.loadMenu(iters, menu)
		menu_tree = self.tree.get_object('menu_tree')
		menu_tree.set_model(self.menu_store)
		for menu in self.menu_store:
			#this might not work for some reason
			try:
				menu_tree.expand_to_path(menu.path)
			except:
				pass
		menu_tree.get_selection().select_path((0,))
		self.on_menu_tree_cursor_changed(menu_tree)

	def loadMenu(self, iters, parent, depth=0):
		if depth == 0:
			icon = util.getIcon(parent)
			iters[depth] = self.menu_store.append(None, (icon, cgi.escape(parent.get_name()), parent))
		depth += 1
		for menu, show in self.editor.getMenus(parent):
			if show:
				name = cgi.escape(menu.get_name())
			else:
				name = '<small><i>' + cgi.escape(menu.get_name()) + '</i></small>'
			icon = util.getIcon(menu)
			iters[depth] = self.menu_store.append(iters[depth-1], (icon, name, menu))
			self.loadMenu(iters, menu, depth)
		depth -= 1

	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:
				name = '---'
				icon = None
			elif item.get_type() == matemenu.TYPE_ENTRY:
				if show:
					name = cgi.escape(item.get_display_name())
				else:
					name = '<small><i>' + cgi.escape(item.get_display_name()) + '</i></small>'
				icon = util.getIcon(item)
			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
	#mate-desktop-item-edit has finished running
	def waitForNewItemProcess(self, process, parent_id, file_path):
		if process.poll() is not None:
			if os.path.isfile(file_path):
				self.editor.insertExternalItem(os.path.split(file_path)[1], parent_id)
			return False
		return True

	def waitForNewMenuProcess(self, process, parent_id, file_path):
		if process.poll() is not None:
			#hack for broken mate-desktop-item-edit
			broken_path = os.path.join(os.path.split(file_path)[0], '.directory')
			if os.path.isfile(broken_path):
				os.rename(broken_path, file_path)
			if os.path.isfile(file_path):
				self.editor.insertExternalMenu(os.path.split(file_path)[1], parent_id)
			return False
		return True

	#this callback keeps you from editing the same item twice
	def waitForEditProcess(self, process, file_path):
		if process.poll() is not None:
			self.edit_pool.remove(file_path)
			return False
		return True

	def on_new_menu_button_clicked(self, button):
		menu_tree = self.tree.get_object('menu_tree')
		menus, iter = menu_tree.get_selection().get_selected()
		if not iter:
			parent = menus[(0,)][2]
			menu_tree.expand_to_path((0,))
			menu_tree.get_selection().select_path((0,))
		else:
			parent = menus[iter][2]
		file_path = os.path.join(util.getUserDirectoryPath(), util.getUniqueFileId('mozo-made', '.directory'))
		process = subprocess.Popen(['mate-desktop-item-edit', file_path], env=os.environ)
		GLib.timeout_add(100, self.waitForNewMenuProcess, process, parent.menu_id, file_path)

	def on_new_item_button_clicked(self, button):
		menu_tree = self.tree.get_object('menu_tree')
		menus, iter = menu_tree.get_selection().get_selected()
		if not iter:
			parent = menus[(0,)][2]
			menu_tree.expand_to_path((0,))
			menu_tree.get_selection().select_path((0,))
		else:
			parent = menus[iter][2]
		file_path = os.path.join(util.getUserItemPath(), util.getUniqueFileId('mozo-made', '.desktop'))
		process = subprocess.Popen(['mate-desktop-item-edit', file_path], env=os.environ)
		GLib.timeout_add(100, self.waitForNewItemProcess, process, parent.menu_id, file_path)

	def on_new_separator_button_clicked(self, button):
		item_tree = self.tree.get_object('item_tree')
		items, iter = item_tree.get_selection().get_selected()
		if not iter:
			return
		else:
			after = items[iter][3]
			menu_tree = self.tree.get_object('menu_tree')
			menus, iter = menu_tree.get_selection().get_selected()
			parent = menus[iter][2]
			self.editor.createSeparator(parent, after=after)

	def on_edit_delete_activate(self, menu):
		item_tree = self.tree.get_object('item_tree')
		items, iter = item_tree.get_selection().get_selected()
		if not iter:
			return
		item = items[iter][3]
		if item.get_type() == matemenu.TYPE_ENTRY:
			self.editor.deleteItem(item)
		elif item.get_type() == matemenu.TYPE_DIRECTORY:
			self.editor.deleteMenu(item)
		elif item.get_type() == matemenu.TYPE_SEPARATOR:
			self.editor.deleteSeparator(item)

	def on_edit_revert_to_original_activate(self, menu):
		item_tree = self.tree.get_object('item_tree')
		items, iter = item_tree.get_selection().get_selected()
		if not iter:
			return
		item = items[iter][3]
		if item.get_type() == matemenu.TYPE_ENTRY:
			self.editor.revertItem(item)
		elif item.get_type() == matemenu.TYPE_DIRECTORY:
			self.editor.revertMenu(item)

	def on_edit_properties_activate(self, menu):
		item_tree = self.tree.get_object('item_tree')
		items, iter = item_tree.get_selection().get_selected()
		if not iter:
			return
		item = items[iter][3]
		if item.get_type() not in (matemenu.TYPE_ENTRY, matemenu.TYPE_DIRECTORY):
			return

		if item.get_type() == matemenu.TYPE_ENTRY:
			file_path = os.path.join(util.getUserItemPath(), item.get_desktop_file_id())
			file_type = 'Item'
		elif item.get_type() == matemenu.TYPE_DIRECTORY:
			file_path = os.path.join(util.getUserDirectoryPath(), os.path.split(item.get_desktop_file_path())[1])
			file_type = 'Menu'

		if not os.path.isfile(file_path):
			data = open(item.get_desktop_file_path()).read()
			with codecs.open(file_path, 'w') as f:
				f.write(data)
			self.editor._MenuEditor__addUndo([(file_type, os.path.split(file_path)[1]),])
		else:
			self.editor._MenuEditor__addUndo([item,])
		if file_path not in self.edit_pool:
			self.edit_pool.append(file_path)
			process = subprocess.Popen(['mate-desktop-item-edit', file_path], env=os.environ)
			GLib.timeout_add(100, self.waitForEditProcess, process, file_path)

	def on_menu_tree_cursor_changed(self, treeview):
		menus, iter = treeview.get_selection().get_selected()
		if iter is None:
			return
		menu_path = menus.get_path(iter)
		item_tree = self.tree.get_object('item_tree')
		item_tree.get_selection().unselect_all()
		self.loadItems(self.menu_store[menu_path][2], menu_path)
		self.tree.get_object('edit_delete').set_sensitive(False)
		self.tree.get_object('edit_revert_to_original').set_sensitive(False)
		self.tree.get_object('edit_properties').set_sensitive(False)
		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)

	def on_menu_tree_drag_data_get(self, treeview, context, selection, target_id, etime):
		menus, iter = treeview.get_selection().get_selected()
		self.drag_data = menus[iter][2]

	def on_menu_tree_drag_data_received(self, treeview, context, x, y, selection, info, etime):
		menus = treeview.get_model()
		drop_info = treeview.get_dest_row_at_pos(x, y)
		if drop_info:
			path, position = drop_info
			types = (Gtk.TreeViewDropPosition.INTO_OR_BEFORE, Gtk.TreeViewDropPosition.INTO_OR_AFTER)
			if position not in types:
				context.finish(False, False, etime)
				return False
			if str(selection.get_target()) in ('MOZO_ITEM_ROW', 'MOZO_MENU_ROW'):
				if self.drag_data is None:
					return False
				item = self.drag_data
				new_parent = menus[path][2]
				if item.get_type() == matemenu.TYPE_ENTRY:
					self.editor.copyItem(item, new_parent)
				elif item.get_type() == matemenu.TYPE_DIRECTORY:
					if not self.editor.moveMenu(item, new_parent):
						self.loadUpdates()
				elif item.get_type() == matemenu.TYPE_SEPARATOR:
					self.editor.moveSeparator(item, new_parent)
				else:
					context.finish(False, False, etime) 
				context.finish(True, True, etime)
		self.drag_data = None

	def on_item_tree_show_toggled(self, cell, path):
		item = self.item_store[path][3]
		if item.get_type() == matemenu.TYPE_SEPARATOR:
			return
		if self.item_store[path][0]:
			self.editor.setVisible(item, False)
		else:
			self.editor.setVisible(item, True)
		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()
		if iter is None:
			return
		item = items[iter][3]
		self.tree.get_object('edit_delete').set_sensitive(True)
		self.tree.get_object('new_separator_button').set_sensitive(True)
		self.tree.get_object('delete_button').set_sensitive(True)
		if self.editor.canRevert(item):
			self.tree.get_object('edit_revert_to_original').set_sensitive(True)
		else:
			self.tree.get_object('edit_revert_to_original').set_sensitive(False)
		if not item.get_type() == matemenu.TYPE_SEPARATOR:
			self.tree.get_object('edit_properties').set_sensitive(True)
			self.tree.get_object('properties_button').set_sensitive(True)
		else:
			self.tree.get_object('edit_properties').set_sensitive(False)
			self.tree.get_object('properties_button').set_sensitive(False)

		# If first item...
		if items.get_path(iter).get_indices()[0] == 0:
			self.tree.get_object('move_up_button').set_sensitive(False)
		else:
			self.tree.get_object('move_up_button').set_sensitive(True)

		# If last item...
		if items.get_path(iter).get_indices()[0] == (len(items)-1):
			self.tree.get_object('move_down_button').set_sensitive(False)
		else:
			self.tree.get_object('move_down_button').set_sensitive(True)

	def on_item_tree_row_activated(self, treeview, path, column):
		self.on_edit_properties_activate(None)

	def on_item_tree_popup_menu(self, item_tree, event=None):
		model, iter = item_tree.get_selection().get_selected()
		if event:
			#don't show if it's not the right mouse button
			if event.button != 3:
				return
			button = event.button
			event_time = event.time
			info = item_tree.get_path_at_pos(int(event.x), int(event.y))
			if info is not None:
				path, col, cellx, celly = info
				item_tree.grab_focus()
				item_tree.set_cursor(path, col, 0)
		else:
			path = model.get_path(iter)
			button = 0
			event_time = 0
			item_tree.grab_focus()
			item_tree.set_cursor(path, item_tree.get_columns()[0], 0)
		popup = self.tree.get_object('edit_menu')
		popup.popup(None, None, None, None, button, event_time)
		#without this shift-f10 won't work
		return True

	def on_item_tree_drag_data_get(self, treeview, context, selection, target_id, etime):
		items, iter = treeview.get_selection().get_selected()
		self.drag_data = items[iter][3]

	def on_item_tree_drag_data_received(self, treeview, context, x, y, selection, info, etime):
		items = treeview.get_model()
		types_before = (Gtk.TreeViewDropPosition.BEFORE, Gtk.TreeViewDropPosition.INTO_OR_BEFORE)
		types_into = (Gtk.TreeViewDropPosition.INTO_OR_BEFORE, Gtk.TreeViewDropPosition.INTO_OR_AFTER)
		types_after = (Gtk.TreeViewDropPosition.AFTER, Gtk.TreeViewDropPosition.INTO_OR_AFTER)
		if str(selection.get_target()) == 'MOZO_ITEM_ROW':
			drop_info = treeview.get_dest_row_at_pos(x, y)
			before = None
			after = None
			if self.drag_data is None:
				return False
			item = self.drag_data
			# by default we assume, that the items stays in the same menu
			destination = item.get_parent()
			if drop_info:
				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):
					# append the selected item to the choosen menu
					destination = target
				elif position in types_before:
					before = target
				elif position in types_after:
					after = target
				else:
					# this does not happen
					pass
			else:
				path = (len(items) - 1,)
				after = items[path][3]
			if item.get_type() == matemenu.TYPE_ENTRY:
				self.editor.moveItem(item, destination, before, after)
			elif item.get_type() == matemenu.TYPE_DIRECTORY:
				if not self.editor.moveMenu(item, destination, before, after):
					self.loadUpdates()
			elif item.get_type() == matemenu.TYPE_SEPARATOR:
				self.editor.moveSeparator(item, destination, before, after)
			context.finish(True, True, etime)
		elif str(selection.get_target()) == 'text/plain':
			if selection.data is None:
				return False
			menus, iter = self.tree.get_object('menu_tree').get_selection().get_selected()
			parent = menus[iter][2]
			drop_info = treeview.get_dest_row_at_pos(x, y)
			before = None
			after = None
			if drop_info:
				path, position = drop_info
				if position in types_before:
					before = items[path][3]
				else:
					after = items[path][3]
			else:
				path = (len(items) - 1,)
				after = items[path][3]
			file_path = urllib.unquote(selection.data).strip()
			if not file_path.startswith('file:'):
				return
			myfile = Gio.File(uri=file_path)
			file_info = myfile.query_info(Gio.FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE)
			content_type = file_info.get_content_type()
			if content_type == 'application/x-desktop':
				input_stream = myfile.read()
				keyfile = GLib.KeyFile()
				keyfile.load_from_data(input_stream.read())
				self.editor.createItem(parent, before, after, KeyFile=keyfile)
			elif content_type in ('application/x-shellscript', 'application/x-executable'):
				self.editor.createItem(parent, before, after,
				                       Name=os.path.split(file_path)[1].strip(),
				                       Exec=file_path.replace('file://', '').strip(),
				                       Terminal=False)
		self.drag_data = None

	def on_item_tree_key_press_event(self, item_tree, event):
		if event.keyval == Gdk.KEY_Delete:
			self.on_edit_delete_activate(item_tree)

	def on_move_up_button_clicked(self, button):
		item_tree = self.tree.get_object('item_tree')
		items, iter = item_tree.get_selection().get_selected()
		if not iter:
			return
		path = items.get_path(iter)
		#at top, can't move up
		if path.get_indices()[0] == 0:
			return
		item = items[path][3]
		before = items[(path[0] - 1,)][3]
		if item.get_type() == matemenu.TYPE_ENTRY:
			self.editor.moveItem(item, item.get_parent(), before=before)
		elif item.get_type() == matemenu.TYPE_DIRECTORY:
			self.editor.moveMenu(item, item.get_parent(), before=before)
		elif item.get_type() == matemenu.TYPE_SEPARATOR:
			self.editor.moveSeparator(item, item.get_parent(), before=before)

	def on_move_down_button_clicked(self, button):
		item_tree = self.tree.get_object('item_tree')
		items, iter = item_tree.get_selection().get_selected()
		if not iter:
			return
		path = items.get_path(iter)
		#at bottom, can't move down
		if path.get_indices()[0] == (len(items) - 1):
			return
		item = items[path][3]
		after = items[path][3]
		if item.get_type() == matemenu.TYPE_ENTRY:
			self.editor.moveItem(item, item.get_parent(), after=after)
		elif item.get_type() == matemenu.TYPE_DIRECTORY:
			self.editor.moveMenu(item, item.get_parent(), after=after)
		elif item.get_type() == matemenu.TYPE_SEPARATOR:
			self.editor.moveSeparator(item, item.get_parent(), after=after)

	def on_mainwindow_undo(self, accelgroup, window, keyval, modifier):
		self.editor.undo()

	def on_mainwindow_redo(self, accelgroup, window, keyval, modifier):
		self.editor.redo()

	def on_help_button_clicked(self, *args):
		Gtk.show_uri(Gdk.Screen.get_default(), "help:mate-user-guide/menu-editor", Gtk.get_current_event_time())

	def on_revert_button_clicked(self, button):
		dialog = self.tree.get_object('revertdialog')
		dialog.set_transient_for(self.tree.get_object('mainwindow'))
		dialog.show_all()
		if dialog.run() == Gtk.ResponseType.YES:
			self.editor.revert()
		dialog.hide()

	def on_close_button_clicked(self, button):
		try:
			self.tree.get_object('mainwindow').hide()
		except:
			pass
		GLib.timeout_add(10, self.quit)

	def on_properties_button_clicked(self, button):
		self.on_edit_properties_activate(None)

	def on_delete_button_clicked(self, button):
		self.on_edit_delete_activate(None)

	def on_style_updated(self, *args):
		self.loadUpdates()

	def quit(self):
		self.editor.quit()
		Gtk.main_quit()