summaryrefslogtreecommitdiff
path: root/Mozo/MenuEditor.py
blob: d74cb2bb1037756311b9840d42ef0cb9767e9117 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
# -*- coding: utf-8 -*-
#   Mozo Menu Editor - Simple fd.o Compliant Menu Editor
#   Copyright (C) 2006  Travis Watkins, Heinrich Wendel
#
#   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import os, re, xml.dom.minidom, locale
import matemenu
from Mozo import util

class Menu:
	tree = None
	visible_tree = None
	path = None
	dom = None

class MenuEditor:
	#lists for undo/redo functionality
	__undo = []
	__redo = []

	def __init__(self):
		self.locale = locale.getdefaultlocale()[0]
		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())
		if not os.path.isfile(self.applications.path):
			self.applications.dom = xml.dom.minidom.parseString(util.getUserMenuXml(self.applications.tree))
		else:
			self.applications.dom = xml.dom.minidom.parse(self.applications.path)
		self.__remove_whilespace_nodes(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())
		if not os.path.isfile(self.settings.path):
			self.settings.dom = xml.dom.minidom.parseString(util.getUserMenuXml(self.settings.tree))
		else:
			self.settings.dom = xml.dom.minidom.parse(self.settings.path)
		self.__remove_whilespace_nodes(self.settings.dom)

		self.save(True)

	def save(self, from_loading=False):
		for menu in ('applications', 'settings'):
			fd = open(getattr(self, menu).path, 'w')
			fd.write(re.sub("\n[\s]*([^\n<]*)\n[\s]*</", "\\1</", getattr(self, menu).dom.toprettyxml().replace('<?xml version="1.0" ?>\n', '')))
			fd.close()
		if not from_loading:
			self.__loadMenus()

	def quit(self):
		for file_name in os.listdir(util.getUserItemPath()):
			if file_name[-6:-2] in ('redo', 'undo'):
				file_path = os.path.join(util.getUserItemPath(), file_name)
				os.unlink(file_path)
		for file_name in os.listdir(util.getUserDirectoryPath()):
			if file_name[-6:-2] in ('redo', 'undo'):
				file_path = os.path.join(util.getUserDirectoryPath(), file_name)
				os.unlink(file_path)
		for file_name in os.listdir(util.getUserMenuPath()):
			if file_name[-6:-2] in ('redo', 'undo'):
				file_path = os.path.join(util.getUserMenuPath(), file_name)
				os.unlink(file_path)

	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())
			try:
				os.unlink(path)
			except OSError:
				pass
			#reload DOM for each menu
			if not os.path.isfile(menu.path):
				menu.dom = xml.dom.minidom.parseString(util.getUserMenuXml(menu.tree))
			else:
				menu.dom = xml.dom.minidom.parse(menu.path)
			self.__remove_whilespace_nodes(menu.dom)
		#reset undo/redo, no way to recover from this
		self.__undo, self.__redo = [], []
		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)
		self.revertMenu(menu)

	def undo(self):
		if len(self.__undo) == 0:
			return
		files = self.__undo.pop()
		redo = []
		for file_path in files:
			new_path = file_path.rsplit('.', 1)[0]
			redo_path = util.getUniqueRedoFile(new_path)
			data = open(new_path).read()
			open(redo_path, 'w').write(data)
			data = open(file_path).read()
			open(new_path, 'w').write(data)
			os.unlink(file_path)
			redo.append(redo_path)
		#reload DOM to make changes stick
		for name in ('applications', 'settings'):
			menu = getattr(self, name)
			if not os.path.isfile(menu.path):
				menu.dom = xml.dom.minidom.parseString(util.getUserMenuXml(menu.tree))
			else:
				menu.dom = xml.dom.minidom.parse(menu.path)
			self.__remove_whilespace_nodes(menu.dom)
		self.__redo.append(redo)

	def redo(self):
		if len(self.__redo) == 0:
			return
		files = self.__redo.pop()
		undo = []
		for file_path in files:
			new_path = file_path.rsplit('.', 1)[0]
			undo_path = util.getUniqueUndoFile(new_path)
			data = open(new_path).read()
			open(undo_path, 'w').write(data)
			data = open(file_path).read()
			open(new_path, 'w').write(data)
			os.unlink(file_path)
			undo.append(undo_path)
		#reload DOM to make changes stick
		for name in ('applications', 'settings'):
			menu = getattr(self, name)
			if not os.path.isfile(menu.path):
				menu.dom = xml.dom.minidom.parseString(util.getUserMenuXml(menu.tree))
			else:
				menu.dom = xml.dom.minidom.parse(menu.path)
			self.__remove_whilespace_nodes(menu.dom)
		self.__undo.append(undo)

	def getMenus(self, parent=None):
		if parent == None:
			yield self.applications.tree.root
			yield self.settings.tree.root
		else:
			for menu in parent.get_contents():
				if menu.get_type() == matemenu.TYPE_DIRECTORY:
					yield (menu, self.__isVisible(menu))

	def getItems(self, menu):
		for item in menu.get_contents():
			if item.get_type() == matemenu.TYPE_SEPARATOR:
				yield (item, True)
			else:
				if item.get_type() == matemenu.TYPE_ENTRY 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 util.getItemPath(item.get_desktop_file_id()):
				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:
			if item.get_desktop_file_path():
				file_id = os.path.split(item.get_desktop_file_path())[1]
			else:
				file_id = item.get_menu_id() + '.directory'
			if util.getDirectoryPath(file_id):
				path = util.getUserDirectoryPath()
				if os.path.isfile(os.path.join(path, file_id)):
					return True
		return False

	def setVisible(self, item, visible):
		dom = self.__getMenu(item).dom
		if item.get_type() == matemenu.TYPE_ENTRY:
			self.__addUndo([self.__getMenu(item), item])
			menu_xml = self.__getXmlMenu(self.__getPath(item.get_parent()), dom, dom)
			if visible:
				self.__addXmlFilename(menu_xml, dom, item.get_desktop_file_id(), 'Include')
				self.__writeItem(item, no_display=False)
			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:
			self.__addUndo([self.__getMenu(item), item])
			#don't mess with it if it's empty
			if len(item.get_contents()) == 0:
				return
			menu_xml = self.__getXmlMenu(self.__getPath(item), dom, dom)
			for node in self.__getXmlNodesByName(['Deleted', 'NotDeleted'], menu_xml):
				node.parentNode.removeChild(node)
			if visible:
				self.__writeMenu(item, no_display=False)
			else:
				self.__writeMenu(item, no_display=True)
			self.__addXmlTextElement(menu_xml, 'DirectoryDir', util.getUserDirectoryPath(), dom)
		self.save()

	def createItem(self, parent, icon, name, comment, command, use_term, before=None, after=None):
		file_id = self.__writeItem(None, icon, name, comment, command, use_term)
		self.insertExternalItem(file_id, parent.menu_id, before, after)

	def insertExternalItem(self, file_id, parent_id, before=None, after=None):
		parent = self.__findMenu(parent_id)
		dom = self.__getMenu(parent).dom
		self.__addItem(parent, file_id, dom)
		self.__positionItem(parent, ('Item', file_id), before, after)
		self.__addUndo([self.__getMenu(parent), ('Item', file_id)])
		self.save()

	def createMenu(self, parent, icon, name, comment, before=None, after=None):
		file_id = self.__writeMenu(None, icon, name, comment)
		self.insertExternalMenu(file_id, parent.menu_id, before, after)

	def insertExternalMenu(self, file_id, parent_id, before=None, after=None):
		menu_id = file_id.rsplit('.', 1)[0]
		parent = self.__findMenu(parent_id)
		dom = self.__getMenu(parent).dom
		self.__addXmlDefaultLayout(self.__getXmlMenu(self.__getPath(parent), dom, dom) , dom)
		menu_xml = self.__getXmlMenu(self.__getPath(parent) + '/' + menu_id, dom, dom)
		self.__addXmlTextElement(menu_xml, 'Directory', file_id, dom)
		self.__positionItem(parent, ('Menu', menu_id), before, after)
		self.__addUndo([self.__getMenu(parent), ('Menu', file_id)])
		self.save()

	def createSeparator(self, parent, before=None, after=None):
		self.__positionItem(parent, ('Separator',), before, after)
		self.__addUndo([self.__getMenu(parent), ('Separator',)])
		self.save()

	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():
			return
		#hack, item.get_parent() seems to fail a lot
		if not parent:
			parent = item.get_parent()
		if final:
			self.__addUndo([self.__getMenu(parent), item])
		self.__writeItem(item, icon, name, comment, command, use_term)
		if final:
			dom = self.__getMenu(parent).dom
			menu_xml = self.__getXmlMenu(self.__getPath(parent), dom, dom)
			self.__addXmlTextElement(menu_xml, 'AppDir', util.getUserItemPath(), dom)
		self.save()

	def editMenu(self, menu, icon, name, comment, final=True):
		#if nothing changed don't make a user copy
		if icon == menu.get_icon() and name == menu.get_name() and comment == menu.get_comment():
			return
		#we don't use this, we just need to make sure the <Menu> exists
		#otherwise changes won't show up
		dom = self.__getMenu(menu).dom
		menu_xml = self.__getXmlMenu(self.__getPath(menu), dom, dom)
		file_id = self.__writeMenu(menu, icon, name, comment)
		if final:
			self.__addXmlTextElement(menu_xml, 'DirectoryDir', util.getUserDirectoryPath(), dom)
			self.__addUndo([self.__getMenu(menu), menu])
		self.save()

	def copyItem(self, item, new_parent, before=None, after=None):
		dom = self.__getMenu(new_parent).dom
		file_path = item.get_desktop_file_path()
		keyfile = util.DesktopParser(file_path)
		#erase Categories in new file
		keyfile.set('Categories', ('',))
		keyfile.set('Hidden', False)
		file_id = util.getUniqueFileId(item.get_name(), '.desktop')
		out_path = os.path.join(util.getUserItemPath(), file_id)
		keyfile.write(open(out_path, 'w'))
		self.__addItem(new_parent, file_id, dom)
		self.__positionItem(new_parent, ('Item', file_id), before, after)
		self.__addUndo([self.__getMenu(new_parent), ('Item', file_id)])
		self.save()
		return file_id

	def moveItem(self, item, new_parent, before=None, after=None):
		undo = []
		if item.get_parent() != new_parent:
			#hide old item
			self.deleteItem(item)
			undo.append(item)
			file_id = self.copyItem(item, new_parent)
			item = ('Item', file_id)
			undo.append(item)
		self.__positionItem(new_parent, item, before, after)
		undo.append(self.__getMenu(new_parent))
		self.__addUndo(undo)
		self.save()

	def moveMenu(self, menu, new_parent, before=None, after=None):
		parent = new_parent
		#don't move a menu into it's child
		while parent.get_parent():
			parent = parent.get_parent()
			if parent == menu:
				return False

		#don't move a menu into itself
		if new_parent == menu:
			return False

		#can't move between top-level menus
		if self.__getMenu(menu) != self.__getMenu(new_parent):
			return False
		if menu.get_parent() != new_parent:
			dom = self.__getMenu(menu).dom
			root_path = self.__getPath(menu).split('/', 1)[0]
			xml_root = self.__getXmlMenu(root_path, dom, dom)
			old_path = self.__getPath(menu).split('/', 1)[1]
			#root menu's path has no /
			if '/' in self.__getPath(new_parent):
				new_path = self.__getPath(new_parent).split('/', 1)[1] + '/' + menu.get_menu_id()
			else:
				new_path = menu.get_menu_id()
			self.__addXmlMove(xml_root, old_path, new_path, dom)
		self.__positionItem(new_parent, menu, before, after)
		self.__addUndo([self.__getMenu(new_parent),])
		self.save()

	def moveSeparator(self, separator, new_parent, before=None, after=None):
		self.__positionItem(new_parent, separator, before, after)
		self.__addUndo([self.__getMenu(new_parent),])
		self.save()

	def deleteItem(self, item):
		self.__writeItem(item, hidden=True)
		self.__addUndo([item,])
		self.save()

	def deleteMenu(self, menu):
		dom = self.__getMenu(menu).dom
		menu_xml = self.__getXmlMenu(self.__getPath(menu), dom, dom)
		self.__addDeleted(menu_xml, dom)
		self.__addUndo([self.__getMenu(menu),])
		self.save()

	def deleteSeparator(self, item):
		parent = item.get_parent()
		contents = parent.get_contents()
		contents.remove(item)
		layout = self.__createLayout(contents)
		dom = self.__getMenu(parent).dom
		menu_xml = self.__getXmlMenu(self.__getPath(parent), dom, dom)
		self.__addXmlLayout(menu_xml, layout, dom)
		self.__addUndo([self.__getMenu(item.get_parent()),])
		self.save()

	def revertItem(self, item):
		if not self.canRevert(item):
			return
		self.__addUndo([item,])
		try:
			os.remove(item.get_desktop_file_path())
		except OSError:
			pass
		self.save()

	def revertMenu(self, menu):
		if not self.canRevert(menu):
			return
		#wtf happened here? oh well, just bail
		if not menu.get_desktop_file_path():
			return
		self.__addUndo([menu,])
		file_id = os.path.split(menu.get_desktop_file_path())[1]
		path = os.path.join(util.getUserDirectoryPath(), file_id)
		try:
			os.remove(path)
		except OSError:
			pass
		self.save()

	#private stuff
	def __addUndo(self, items):
		self.__undo.append([])
		for item in items:
			if isinstance(item, Menu):
				file_path = item.path
			elif isinstance(item, tuple):
				if item[0] == 'Item':
					file_path = os.path.join(util.getUserItemPath(), item[1])
					if not os.path.isfile(file_path):
						file_path = util.getItemPath(item[1])
				elif item[0] == 'Menu':
					file_path = os.path.join(util.getUserDirectoryPath(), item[1])
					if not os.path.isfile(file_path):
						file_path = util.getDirectoryPath(item[1])
				else:
					continue
			elif item.get_type() == matemenu.TYPE_DIRECTORY:
				if item.get_desktop_file_path() == 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:
				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()
			else:
				continue
			data = open(file_path).read()
			undo_path = util.getUniqueUndoFile(file_path)
			open(undo_path, 'w').write(data)
			self.__undo[-1].append(undo_path)

	def __getMenu(self, item):
		root = item.get_parent()
		if not root:
			#already at the top
			root = item
		else:
			while True:
				if root.get_parent():
					root = root.get_parent()
				else:
					break
		if root.menu_id == self.applications.tree.root.menu_id:
			return self.applications
		return self.settings

	def __findMenu(self, menu_id, parent=None):
		if parent == None:
			menu = self.__findMenu(menu_id, self.applications.tree.root)
			if menu != 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 item
				menu = self.__findMenu(menu_id, item)
				if menu != None:
					return menu

	def __isVisible(self, item):
		if item.get_type() == matemenu.TYPE_ENTRY:
			return not (item.get_is_excluded() or item.get_is_nodisplay())
		menu = self.__getMenu(item)
		if menu == self.applications:
			root = self.applications.visible_tree.root
		elif menu == self.settings:
			root = self.settings.visible_tree.root
		if item.get_type() == matemenu.TYPE_DIRECTORY:
			if self.__findMenu(item.menu_id, root) == None:
				return False
		return True

	def __getPath(self, menu, path=None):
		if not path:
                        path = menu.tree.root.get_menu_id()
		if menu.get_parent():
			path = self.__getPath(menu.get_parent(), path)
			path += '/'
			path += menu.menu_id
		return path

	def __getXmlMenu(self, path, element, dom):
		if '/' in path:
			(name, path) = path.split('/', 1)
		else:
			name = path
			path = ''

		found = None
		for node in self.__getXmlNodesByName('Menu', element):
			for child in self.__getXmlNodesByName('Name', node):
				if child.childNodes[0].nodeValue == name:
					if path:
						found = self.__getXmlMenu(path, node, dom)
					else:
						found = node
					break
			if found:
				break
		if not found:
			node = self.__addXmlMenuElement(element, name, dom)
			if path:
				found = self.__getXmlMenu(path, node, dom)
			else:
				found = node

		return found

	def __addXmlMenuElement(self, element, name, dom):
		node = dom.createElement('Menu')
		self.__addXmlTextElement(node, 'Name', name, dom)
		return element.appendChild(node)

	def __addXmlTextElement(self, element, name, text, dom):
		for temp in element.childNodes:
			if temp.nodeName == name:
				if temp.childNodes[0].nodeValue == text:
					return
		node = dom.createElement(name)
		text = dom.createTextNode(text)
		node.appendChild(text)
		return element.appendChild(node)

	def __addXmlFilename(self, element, dom, filename, type = 'Include'):
		# remove old filenames
		for node in self.__getXmlNodesByName(['Include', 'Exclude'], element):
			if node.childNodes[0].nodeName == 'Filename' and node.childNodes[0].childNodes[0].nodeValue == filename:
				element.removeChild(node)

		# add new filename
		node = dom.createElement(type)
		node.appendChild(self.__addXmlTextElement(node, 'Filename', filename, dom))
		return element.appendChild(node)

	def __addDeleted(self, element, dom):
		node = dom.createElement('Deleted')
		return element.appendChild(node)

	def __writeItem(self, item=None, icon=None, name=None, comment=None, command=None, use_term=None, no_display=None, startup_notify=None, hidden=None):
		if item:
			file_path = item.get_desktop_file_path()
			file_id = item.get_desktop_file_id()
			keyfile = util.DesktopParser(file_path)
		elif item == None and name == None:
			raise Exception('New menu items need a name')
		else:
			file_id = util.getUniqueFileId(name, '.desktop')
			keyfile = util.DesktopParser()
		if icon:
			keyfile.set('Icon', icon)
			keyfile.set('Icon', icon, self.locale)
		if name:
			keyfile.set('Name', name)
			keyfile.set('Name', name, self.locale)
		if comment:
			keyfile.set('Comment', comment)
			keyfile.set('Comment', comment, self.locale)
		if command:
			keyfile.set('Exec', command)
		if use_term != None:
			keyfile.set('Terminal', use_term)
		if no_display != None:
			keyfile.set('NoDisplay', no_display)
		if startup_notify != None:
			keyfile.set('StartupNotify', startup_notify)
		if hidden != None:
			keyfile.set('Hidden', hidden)
		out_path = os.path.join(util.getUserItemPath(), file_id)
		keyfile.write(open(out_path, 'w'))
		return file_id

	def __writeMenu(self, menu=None, icon=None, name=None, comment=None, no_display=None):
		if menu:
			file_id = os.path.split(menu.get_desktop_file_path())[1]
			file_path = menu.get_desktop_file_path()
			keyfile = util.DesktopParser(file_path)
		elif menu == None and name == None:
			raise Exception('New menus need a name')
		else:
			file_id = util.getUniqueFileId(name, '.directory')
			keyfile = util.DesktopParser(file_type='Directory')
		if icon:
			keyfile.set('Icon', icon)
		if name:
			keyfile.set('Name', name)
			keyfile.set('Name', name, self.locale)
		if comment:
			keyfile.set('Comment', comment)
			keyfile.set('Comment', comment, self.locale)
		if no_display != None:
			keyfile.set('NoDisplay', no_display)
		out_path = os.path.join(util.getUserDirectoryPath(), file_id)
		keyfile.write(open(out_path, 'w'))
		return file_id

	def __getXmlNodesByName(self, name, element):
		for	child in element.childNodes:
			if child.nodeType == xml.dom.Node.ELEMENT_NODE:
				if isinstance(name, str) and child.nodeName == name:
					yield child
				elif isinstance(name, list) or isinstance(name, tuple):
					if child.nodeName in name:
						yield child

	def __remove_whilespace_nodes(self, node):
		remove_list = []
		for child in node.childNodes:
			if child.nodeType == xml.dom.minidom.Node.TEXT_NODE:
				child.data = child.data.strip()
				if not child.data.strip():
					remove_list.append(child)
			elif child.hasChildNodes():
				self.__remove_whilespace_nodes(child)
		for node in remove_list:
			node.parentNode.removeChild(node)

	def __addXmlMove(self, element, old, new, dom):
		if not self.__undoMoves(element, old, new, dom):
			node = dom.createElement('Move')
			node.appendChild(self.__addXmlTextElement(node, 'Old', old, dom))
			node.appendChild(self.__addXmlTextElement(node, 'New', new, dom))
			#are parsed in reverse order, need to put at the beginning
			return element.insertBefore(node, element.firstChild)

	def __addXmlLayout(self, element, layout, dom):
		# remove old layout
		for node in self.__getXmlNodesByName('Layout', element):
			element.removeChild(node)

		# add new layout
		node = dom.createElement('Layout')
		for order in layout.order:
			if order[0] == 'Separator':
				child = dom.createElement('Separator')
				node.appendChild(child)
			elif order[0] == 'Filename':
				child = self.__addXmlTextElement(node, 'Filename', order[1], dom)
			elif order[0] == 'Menuname':
				child = self.__addXmlTextElement(node, 'Menuname', order[1], dom)
			elif order[0] == 'Merge':
				child = dom.createElement('Merge')
				child.setAttribute('type', order[1])
				node.appendChild(child)
		return element.appendChild(node)

	def __addXmlDefaultLayout(self, element, dom):
		# remove old default layout
		for node in self.__getXmlNodesByName('DefaultLayout', element):
			element.removeChild(node)

		# add new layout
		node = dom.createElement('DefaultLayout')
		node.setAttribute('inline', 'false')
		return element.appendChild(node)

	def __createLayout(self, items):
		layout = Layout()
		layout.order = []

		layout.order.append(['Merge', 'menus'])
		for item in items:
			if isinstance(item, tuple):
				if item[0] == 'Separator':
					layout.parseSeparator()
				elif item[0] == 'Menu':
					layout.parseMenuname(item[1])
				elif item[0] == 'Item':
					layout.parseFilename(item[1])
			elif item.get_type() == matemenu.TYPE_DIRECTORY:
				layout.parseMenuname(item.get_menu_id())
			elif item.get_type() == matemenu.TYPE_ENTRY:
				layout.parseFilename(item.get_desktop_file_id())
			elif item.get_type() == matemenu.TYPE_SEPARATOR:
				layout.parseSeparator()
		layout.order.append(['Merge', 'files'])
		return layout

	def __addItem(self, parent, file_id, dom):
		xml_parent = self.__getXmlMenu(self.__getPath(parent), dom, dom)
		self.__addXmlFilename(xml_parent, dom, file_id, 'Include')

	def __deleteItem(self, parent, file_id, dom, before=None, after=None):
		xml_parent = self.__getXmlMenu(self.__getPath(parent), dom, dom)
		self.__addXmlFilename(xml_parent, dom, file_id, 'Exclude')

	def __positionItem(self, parent, item, before=None, after=None):
		if not before and not after:
			return
		if after:
			index = parent.contents.index(after) + 1
		elif before:
			index = parent.contents.index(before)
		contents = parent.contents
		#if this is a move to a new parent you can't remove the item
		try:
			contents.remove(item)
		except:
			pass
		contents.insert(index, item)
		layout = self.__createLayout(contents)
		dom = self.__getMenu(parent).dom
		menu_xml = self.__getXmlMenu(self.__getPath(parent), dom, dom)
		self.__addXmlLayout(menu_xml, layout, dom)

	def __undoMoves(self, element, old, new, dom):
		nodes = []
		matches = []
		original_old = old
		final_old = old
		#get all <Move> elements
		for node in self.__getXmlNodesByName(['Move'], element):
			nodes.insert(0, node)
		#if the <New> matches our old parent we've found a stage to undo
		for node in nodes:
			xml_old = node.getElementsByTagName('Old')[0]
			xml_new = node.getElementsByTagName('New')[0]
			if xml_new.childNodes[0].nodeValue == old:
				matches.append(node)
				#we should end up with this path when completed
				final_old = xml_old.childNodes[0].nodeValue
		#undoing <Move>s
		for node in matches:
			element.removeChild(node)
		if len(matches) > 0:
			for node in nodes:
				xml_old = node.getElementsByTagName('Old')[0]
				xml_new = node.getElementsByTagName('New')[0]
				path = os.path.split(xml_new.childNodes[0].nodeValue)
				if path[0] == original_old:
					element.removeChild(node)
					for node in dom.getElementsByTagName('Menu'):
						name_node = node.getElementsByTagName('Name')[0]
						name = name_node.childNodes[0].nodeValue
						if name == os.path.split(new)[1]:
							#copy app and dir directory info from old <Menu>
							root_path = dom.getElementsByTagName('Menu')[0].getElementsByTagName('Name')[0].childNodes[0].nodeValue
							xml_menu = self.__getXmlMenu(root_path + '/' + new, dom, dom)
							for app_dir in node.getElementsByTagName('AppDir'):
								xml_menu.appendChild(app_dir)
							for dir_dir in node.getElementsByTagName('DirectoryDir'):
								xml_menu.appendChild(dir_dir)
							parent = node.parentNode
							parent.removeChild(node)
					node = dom.createElement('Move')
					node.appendChild(self.__addXmlTextElement(node, 'Old', xml_old.childNodes[0].nodeValue, dom))
					node.appendChild(self.__addXmlTextElement(node, 'New', os.path.join(new, path[1]), dom))
					element.appendChild(node)
			if final_old == new:
				return True
			node = dom.createElement('Move')
			node.appendChild(self.__addXmlTextElement(node, 'Old', final_old, dom))
			node.appendChild(self.__addXmlTextElement(node, 'New', new, dom))
			return element.appendChild(node)

class Layout:
	def __init__(self, node=None):
		self.order = []

	def parseMenuname(self, value):
		self.order.append(['Menuname', value])

	def parseSeparator(self):
		self.order.append(['Separator'])

	def parseFilename(self, value):
		self.order.append(['Filename', value])

	def parseMerge(self, merge_type='all'):
		self.order.append(['Merge', merge_type])