Dome/GUIView.py

   1 from xml.dom import Node
   2 from rox.loading import XDSLoader
   3
   4 import rox
   5 from rox import g, TRUE, FALSE
   6 keysyms = g.keysyms
   7
   8 from View import View
   9 from Display2 import Display
  10 from Beep import Beep
  11 from GetArg import GetArg
  12 from Path import make_relative_path
  13
  14 from rox.Menu import Menu
  15
  16 menu = Menu('main', [
  17                 ('/File', None, '<Branch>', ''),
  18                 ('/File/Save', 'menu_save', '<StockItem>', '<Ctrl>S', g.STOCK_SAVE),
  19                 ('/File/Blank document', 'do_blank_all', '<StockItem>', '<Ctrl>N', g.STOCK_NEW),
  20                 ('/File/Clear undo buffer', 'menu_clear_undo', '<StockItem>', '', g.STOCK_CLEAR),
  21
  22                 ('/Edit', None, '<Branch>', ''),
  23                 ('/Edit/Copy attributes', 'do_yank_attributes', '<StockItem>', '', g.STOCK_COPY),
  24                 ('/Edit/Paste attributes', 'do_paste_attribs', '<StockItem>', '', g.STOCK_PASTE),
  25                 ('/Edit/Copy attrib value', 'do_yank_value', '<StockItem>', '', g.STOCK_COPY),
  26                 ('/Edit/Rename attribute', 'menu_rename_attr', '<StockItem>', '', g.STOCK_PROPERTIES),
  27                 ('/Edit/', '', '', '<separator>'),
  28                 ('/Edit/Cut', 'do_delete_node', '<StockItem>', '<Ctrl>X', g.STOCK_DELETE),
  29                 ('/Edit/Delete', 'do_delete_node_no_clipboard', '<StockItem>', '', g.STOCK_DELETE),
  30                 ('/Edit/Shallow cut', 'do_delete_shallow', '<StockItem>', '<Shift>X', g.STOCK_DELETE),
  31                 ('/Edit/', '', '', '<separator>'),
  32                 ('/Edit/Copy', 'do_yank', '<StockItem>', '<Ctrl>C', g.STOCK_COPY),
  33                 ('/Edit/Shallow copy', 'do_shallow_yank', '<StockItem>', '<Shift>Y', g.STOCK_COPY),
  34                 ('/Edit/', '', '', '<separator>'),
  35                 ('/Edit/Paste (replace)','do_put_replace', '<StockItem>', '<Ctrl>V', g.STOCK_PASTE),
  36                 ('/Edit/Paste (inside)', 'do_put_as_child', '<StockItem>', 'bracketright', g.STOCK_GO_FORWARD),
  37                 ('/Edit/Paste (before)', 'do_put_before', '<StockItem>', '<Shift>P', g.STOCK_GO_UP),
  38                 ('/Edit/Paste (after)', 'do_put_after', '<StockItem>', 'p', g.STOCK_GO_DOWN),
  39                 ('/Edit/', '', '', '<separator>'),
  40                 ('/Edit/Edit value', 'toggle_edit', '<StockItem>', 'Return', g.STOCK_PROPERTIES),
  41                 ('/Edit/', '', '', '<separator>'),
  42                 ('/Edit/Undo', 'do_undo', '<StockItem>', '<Ctrl>Z', g.STOCK_UNDO),
  43                 ('/Edit/Redo', 'do_redo', '<StockItem>', '<Ctrl>Y', g.STOCK_REDO),
  44
  45                 ('/Move', None, '<Branch>', ''),
  46                 ('/Move/XPath search', 'menu_show_search', '<StockItem>', 'slash', g.STOCK_FIND),
  47                 ('/Move/Text search', 'menu_show_text_search', '<StockItem>', 'T', g.STOCK_FIND),
  48                 ('/Move/Enter', 'do_enter', '', '<Shift>greater'),
  49                 ('/Move/Leave', 'do_leave', '', '<Shift>less'),
  50
  51                 ('/Move/Root node', 'move_home', '<StockItem>', 'Home', g.STOCK_HOME),
  52                 ('/Move/Previous sibling', 'move_prev_sib', '<StockItem>', 'Up', g.STOCK_GO_UP),
  53                 ('/Move/Next sibling', 'move_next_sib', '<StockItem>', 'Down', g.STOCK_GO_DOWN),
  54                 ('/Move/Parent', 'move_left', '<StockItem>', 'Left', g.STOCK_GO_BACK),
  55                 ('/Move/First child', 'move_right', '<StockItem>', 'Right', g.STOCK_GO_FORWARD),
  56                 ('/Move/Last child', 'move_end', '<StockItem>', 'End', g.STOCK_GOTO_LAST),
  57
  58                 ('/Move/To attribute', 'menu_select_attrib', '<StockItem>', 'At', g.STOCK_JUMP_TO),
  59
  60                 ('/Select', None, '<Branch>', ''),
  61                 ('/Select/By XPath', 'menu_show_global', '', 'numbersign'),
  62                 ('/Select/Duplicate Siblings', 'do_select_dups', '', ''),
  63                 ('/Select/To Mark', 'do_select_marked', '', 'minus'),
  64                 ('/Select/Child Nodes', 'do_select_children', '', 'asterisk'),
  65
  66                 ('/Mark', None, '<Branch>', ''),
  67                 ('/Mark/Mark Selection', 'do_mark_selection', '', 'm'),
  68                 ('/Mark/Switch with Selection', 'do_mark_switch', '', 'comma'),
  69                 ('/Mark/Clear Mark', 'do_clear_mark', '<StockItem>', '', g.STOCK_CLEAR),
  70                 ('/Mark/Move marked here', 'do_move_marked', '<StockItem>', '', g.STOCK_GO_FORWARD),
  71
  72                 ('/Network', None, '<Branch>', ''),
  73                 ('/Network/HTTP GET', 'do_suck', '', '<Shift>asciicircum'),
  74                 ('/Network/HTTP POST', 'do_http_post', '', ''),
  75                 ('/Network/Send SOAP message', 'do_soap_send', '', ''),
  76
  77                 ('/Create', None, '<Branch>', ''),
  78                 ('/Create/Insert node', 'menu_insert_element', '<StockItem>', 'I', g.STOCK_ADD),
  79                 ('/Create/Append node', 'menu_append_element', '<StockItem>', 'A', g.STOCK_ADD),
  80                 ('/Create/Open node inside', 'menu_open_element', '<StockItem>', 'O', g.STOCK_ADD),
  81                 ('/Create/Open node at end', 'menu_open_element_end', '<StockItem>', 'E', g.STOCK_ADD),
  82
  83                 ('/Process', None, '<Branch>', ''),
  84                 ('/Process/Substitute', 'menu_show_subst', '', 's'),
  85                 ('/Process/Python expression', 'menu_show_pipe', '', '<Shift>exclam'),
  86                 ('/Process/XPath expression', 'menu_show_xpath', '', ''),
  87                 ('/Process/Normalise', 'do_normalise', '', ''),
  88                 ('/Process/Remove default namespaces', 'do_remove_ns', '', 'r'),
  89                 ('/Process/Convert to text', 'do_convert_to_text', '', ''),
  90                 ('/Process/Convert to comment', 'do_convert_to_comment', '', ''),
  91                 ('/Process/Convert to element', 'do_convert_to_element', '', ''),
  92
  93                 ('/Program', None, '<Branch>', ''),
  94                 ('/Program/Input', 'menu_show_ask', '', 'question'),
  95                 ('/Program/Compare', 'do_compare', '', 'equal'),
  96                 ('/Program/Fail', 'do_fail', '', ''),
  97                 ('/Program/Pass', 'do_pass', '', ''),
  98                 ('/Program/Repeat last', 'do_again', '', 'dot'),
  99
 100                 ('/View', None, '<Branch>', ''),
 101                 ('/View/Toggle hidden', 'do_toggle_hidden', '', '<Ctrl>H'),
 102                 ('/View/Hide with expr', 'menu_hide_with_expr', '', ''),
 103                 ('/View/Show as HTML', 'do_show_html', '', ''),
 104                 ('/View/Show as canvas', 'do_show_canvas', '', ''),
 105                 ('/View/Show namespaces', 'show_namespaces', '', '<Ctrl>;'),
 106                 ('/View/Close Window', 'menu_close_window', '<StockItem>', '<Ctrl>Q', g.STOCK_CLOSE),
 107
 108                 #('/Options...', 'menu_options', '', '<Ctrl>O'),
 109                 ])
 110
 111 def make_do(action):
 112         return lambda(self): self.view.may_record([action])
 113
 114 class GUIView(Display, XDSLoader):
 115         def __init__(self, window, view):
 116                 Display.__init__(self, window, view)
 117                 XDSLoader.__init__(self, ['application/x-dome', 'text/xml',
 118                                           'application/xml'])
 119                 window.connect('key-press-event', self.key_press)
 120                 self.cursor_node = None
 121                 self.edit_dialog = None
 122                 self.update_state()
 123
 124                 menu.attach(window, self)
 125
 126         def destroyed(self, widget):
 127                 print "GUIView destroyed!"
 128                 Display.destroyed(self, widget)
 129                 del self.cursor_node
 130
 131         def update_state(self):
 132                 if self.view.rec_point:
 133                         state = "(recording)"
 134                 elif self.view.idle_cb or self.view.op_in_progress:
 135                         state = "(playing)"
 136                 else:
 137                         state = ""
 138                 self.parent_window.set_state(state)
 139                 self.do_update_now()
 140
 141         def xds_load_from_stream(self, path, type, stream):
 142                 if not path:
 143                         raise Exception('Can only load from files... sorry!')
 144                 if path.endswith('.html'):
 145                         self.view.load_html(path)
 146                 else:
 147                         self.view.load_xml(path)
 148                 if self.view.root == self.view.model.get_root():
 149                         self.parent_window.uri = path
 150                         self.parent_window.update_title()
 151
 152         def key_press(self, widget, kev):
 153                 focus = widget.focus_widget
 154                 if focus and focus is not widget and focus.get_toplevel() is widget:
 155                         if focus.event(kev):
 156                                 return TRUE     # Handled
 157
 158                 if self.cursor_node:
 159                         return 0
 160                 if kev.keyval == keysyms.Up:
 161                         self.view.may_record(['move_prev_sib'])
 162                 elif kev.keyval == keysyms.Down:
 163                         self.view.may_record(['move_next_sib'])
 164                 elif kev.keyval == keysyms.Left:
 165                         self.view.may_record(['move_left'])
 166                 elif kev.keyval == keysyms.Right:
 167                         self.view.may_record(['move_right'])
 168                 elif kev.keyval == keysyms.KP_Add:
 169                         self.menu_show_add_attrib()
 170                 elif kev.keyval == keysyms.Tab:
 171                         self.toggle_edit()
 172                 else:
 173                         return 0
 174                 return 1
 175
 176         def do_drag(self, src, dst):
 177                 if src[1] or dst[1]:
 178                         return          # Don't do attribute drags yet
 179                 src, dst = src[0], dst[0]
 180                 path = make_relative_path(src, dst, None, self.view.model.namespaces)
 181                 self.view.may_record(['move_selection', path])
 182
 183         def node_clicked(self, node, bev):
 184                 print "Clicked", node.namespaceURI, node.localName
 185                 if node:
 186                         if bev.type == g.gdk.BUTTON_PRESS:
 187                                 if len(self.view.current_nodes) == 0:
 188                                         src = self.view.root
 189                                 else:
 190                                         src = self.view.current_nodes[-1]
 191                                 shift = bev.state & g.gdk.SHIFT_MASK
 192                                 add = bev.state & g.gdk.CONTROL_MASK
 193                                 select_region = shift and node.nodeType == Node.ELEMENT_NODE
 194                                 lit = shift and not select_region
 195
 196                                 path = make_relative_path(src, node, lit, self.view.model.namespaces)
 197                                 if path == '.' and self.view.current_nodes and not self.view.current_attrib:
 198                                         return
 199                                 if select_region:
 200                                         self.view.may_record(["select_region", path, "unused"])
 201                                 else:
 202                                         self.view.may_record(["do_search", path, "unused", add])
 203                         else:
 204                                 self.view.may_record(["toggle_hidden"])
 205
 206         def attrib_clicked(self, element, attrib, event):
 207                 if len(self.view.current_nodes) == 0:
 208                         src = self.view.root
 209                 else:
 210                         src = self.view.current_nodes[-1]
 211
 212                 print "attrib_clicked", attrib, attrib.namespaceURI, attrib.localName
 213                 path = make_relative_path(src, element, FALSE, self.view.model.namespaces)
 214                 if path != '.':
 215                         self.view.may_record(["do_search", path, "unused", FALSE])
 216                 self.view.may_record(["attribute", attrib.namespaceURI, attrib.localName])
 217
 218         def menu_save(self):
 219                 self.parent_window.save()
 220
 221         def show_menu(self, bev):
 222                 menu.popup(self, bev)
 223
 224         def playback(self, macro, map):
 225                 "Called when the user clicks on a macro button."
 226                 Exec.exec_state.clean()
 227                 if map:
 228                         self.view.may_record(['map', macro.uri])
 229                 else:
 230                         self.view.may_record(['play', macro.uri])
 231
 232         def menu_show_ask(self):
 233                 def do_ask(q, self = self):
 234                         action = ["ask", q]
 235                         self.view.may_record(action)
 236                 GetArg('Input:', do_ask, ('Prompt:',))
 237
 238         def menu_show_subst(self):
 239                 def do_subst(args, self = self):
 240                         action = ["subst", args[0], args[1]]
 241                         self.view.may_record(action)
 242                 GetArg('Substitute:', do_subst, ('Replace:', 'With:'))
 243
 244         def show_namespaces(self):
 245                 import Namespaces
 246                 Namespaces.GUI(self.view.model).show()
 247
 248         def move_from(self, old = []):
 249                 self.hide_editbox()
 250                 Display.move_from(self, old)
 251
 252         def hide_editbox(self):
 253                 if self.cursor_node:
 254                         if self.cursor_attrib:
 255                                 self.cursor_hidden_text.set(text = '%s=%s' %
 256                                         (self.cursor_attrib.name, self.cursor_attrib.value))
 257                         self.cursor_hidden_text.show()
 258                         self.auto_highlight(self.cursor_node)
 259                         self.cursor_node = None
 260                         self.edit_box_item.destroy()
 261
 262         def toggle_edit(self):
 263                 node = self.view.current_nodes[0]
 264                 attrib = self.view.current_attrib
 265
 266                 if self.edit_dialog:
 267                         self.edit_dialog.destroy()
 268                 self.edit_dialog = rox.Dialog()
 269                 eb = self.edit_dialog
 270
 271                 if node.nodeType == Node.ELEMENT_NODE:
 272                         if attrib:
 273                                 text = unicode(attrib.value)
 274                         else:
 275                                 text = node.nodeName
 276                         entry = g.Entry()
 277                         entry.set_text(text)
 278                         entry.set_activates_default(True)
 279                         def get_text(): return entry.get_text()
 280                 else:
 281                         text = node.nodeValue
 282                         entry = g.TextView()
 283                         buffer = entry.get_buffer()
 284                         buffer.insert_at_cursor(text)
 285                         entry.set_size_request(400, 200)
 286
 287                         def get_text():
 288                                 start = buffer.get_start_iter()
 289                                 end = buffer.get_end_iter()
 290                                 return buffer.get_text(start, end, True)
 291                 eb.vbox.pack_start(entry, TRUE, FALSE, 0)
 292
 293                 eb.add_button(g.STOCK_CANCEL, g.RESPONSE_CANCEL)
 294                 eb.add_button(g.STOCK_APPLY, g.RESPONSE_OK)
 295                 eb.set_default_response(g.RESPONSE_OK)
 296                 entry.grab_focus()
 297                 def destroy(eb):
 298                         self.edit_dialog = None
 299                 eb.connect('destroy', destroy)
 300                 def response(eb, resp):
 301                         if resp == g.RESPONSE_CANCEL:
 302                                 eb.destroy()
 303                         elif resp == g.RESPONSE_OK:
 304                                 new = get_text()
 305                                 if new != text:
 306                                         if attrib:
 307                                                 self.view.may_record(['set_attrib', new])
 308                                         else:
 309                                                 self.view.may_record(['change_node', new])
 310                                 eb.destroy()
 311                 eb.connect('response', response)
 312
 313                 eb.show_all()
 314
 315         def menu_select_attrib(self):
 316                 def do_attrib(name):
 317                         if ':' in name:
 318                                 (prefix, localName) = name.split(':', 1)
 319                                 namespaceURI = self.view.model.prefix_to_namespace(self.view.get_current(), prefix)
 320                         else:
 321                                 (prefix, localName) = (None, name)
 322                                 namespaceURI = None
 323                         action = ["attribute", namespaceURI, localName]
 324                         self.view.may_record(action)
 325                 GetArg('Select attribute:', do_attrib, ['Name:'])
 326
 327         def menu_show_add_attrib(self):
 328                 def do_it(name):
 329                         action = ["add_attrib", "UNUSED", name]
 330                         self.view.may_record(action)
 331                 GetArg('Create attribute:', do_it, ['Name:'])
 332
 333         def menu_show_pipe(self):
 334                 def do_pipe(expr):
 335                         action = ["python", expr]
 336                         self.view.may_record(action)
 337                 GetArg('Python expression:', do_pipe, ['Eval:'], "'x' is the old text...")
 338
 339         def menu_show_xpath(self):
 340                 def go(expr):
 341                         action = ["xpath", expr]
 342                         self.view.may_record(action)
 343                 GetArg('XPath expression:', go, ['Eval:'], "Result goes on the clipboard")
 344
 345         def menu_hide_with_expr(self):
 346                 def go(expr):
 347                         action = ["toggle_hidden", expr]
 348                         self.view.may_record(action)
 349                 GetArg('XPath expression:', go, ['Eval:'], "Expr is used for the 'hidden' message.\nEg: @title")
 350
 351         def menu_show_global(self):
 352                 def do_global(pattern):
 353                         action = ["do_global", pattern]
 354                         self.view.may_record(action)
 355                 GetArg('Global:', do_global, ['Pattern:'],
 356                         '(@CURRENT@ is the current node\'s value)\n' +
 357                         'Perform next action on all nodes matching')
 358
 359         def menu_show_text_search(self):
 360                 def do_text_search(pattern):
 361                         action = ["do_text_search", pattern]
 362                         self.view.may_record(action)
 363                 GetArg('Search for:', do_text_search, ['Text pattern:'],
 364                         '(@CURRENT@ is the current node\'s value)\n')
 365
 366         def menu_show_search(self):
 367                 def do_search(pattern):
 368                         action = ["do_search", pattern]
 369                         self.view.may_record(action)
 370                 GetArg('Search for:',
 371                         do_search, ['XPath:'],
 372                         '(@CURRENT@ is the current node\'s value)')
 373
 374         def menu_rename_attr(self):
 375                 def do(name):
 376                         action = ["rename_attrib", name]
 377                         self.view.may_record(action)
 378                 GetArg('Rename to:', do, ['New name:'])
 379
 380
 381         def do_create(self, action, nodeType, data):
 382                 action = action[0]
 383                 qname = True
 384                 if nodeType == Node.ELEMENT_NODE:
 385                         action += 'e'
 386                 elif nodeType == Node.TEXT_NODE:
 387                         action += 't'
 388                         qname = False
 389                 elif nodeType == Node.ATTRIBUTE_NODE:
 390                         action += 'a'
 391
 392                 if qname:
 393                         # Check name is valid
 394                         # XXX: Should be more strict
 395                         data = data.strip()
 396                         assert '\n' not in data
 397                         assert ' ' not in data
 398
 399                 self.view.may_record(['add_node', action, data])
 400
 401         def show_add_box(self, action):
 402                 if action[0] == 'i':
 403                         text = 'Insert'
 404                 elif action[0] == 'a':
 405                         text = 'Append'
 406                 elif action[0] == 'o':
 407                         text = 'Open'
 408                 elif action[0] == 'e':
 409                         text = 'Open at end'
 410                 else:
 411                         assert 0
 412                 if action[1] == 'e':
 413                         text += ' element'
 414                         prompt = 'Node name'
 415                 elif action[1] == 't':
 416                         text += ' text'
 417                         prompt = 'Text'
 418                 else:
 419                         assert 0
 420
 421                 box = g.Dialog()
 422                 text = g.TextView()
 423                 box.vbox.pack_start(text, TRUE, FALSE, 0)
 424                 text.set_size_request(400, 200)
 425                 box.set_has_separator(False)
 426
 427                 box.add_button(g.STOCK_CANCEL, g.RESPONSE_CANCEL)
 428                 box.add_button('Add _Attribute', Node.ATTRIBUTE_NODE)
 429                 box.add_button('Add _Text', Node.TEXT_NODE)
 430                 box.add_button('Add _Element', Node.ELEMENT_NODE)
 431                 box.set_default_response(g.RESPONSE_OK)
 432                 text.grab_focus()
 433                 def response(box, resp):
 434                         if resp == g.RESPONSE_CANCEL:
 435                                 box.destroy()
 436                                 return
 437                         buffer = text.get_buffer()
 438                         start = buffer.get_start_iter()
 439                         end = buffer.get_end_iter()
 440                         new = buffer.get_text(start, end, True)
 441                         if new:
 442                                 self.do_create(action, resp, new)
 443                         box.destroy()
 444                 box.connect('response', response)
 445
 446                 box.show_all()
 447
 448         def new_name(self):
 449                 cur = self.view.get_current()
 450                 if cur.nodeType == Node.ELEMENT_NODE:
 451                         return cur.nodeName
 452                 return cur.parentNode.nodeName
 453
 454         def menu_insert_element(self):
 455                 "Insert element"
 456                 self.show_add_box('ie')
 457
 458         def menu_append_element(self):
 459                 "Append element"
 460                 self.show_add_box('ae')
 461
 462         def menu_open_element(self):
 463                 "Open element"
 464                 self.show_add_box('oe')
 465
 466         def menu_open_element_end(self):
 467                 "Open element at end"
 468                 self.show_add_box('ee')
 469
 470         def menu_insert_text(self):
 471                 "Insert text"
 472                 self.show_add_box('it')
 473
 474         def menu_append_text(self):
 475                 "Append text"
 476                 self.show_add_box('at')
 477
 478         def menu_open_text(self):
 479                 "Open text"
 480                 self.show_add_box('ot')
 481
 482         def menu_open_text_end(self):
 483                 "Open text at end"
 484                 self.show_add_box('et')
 485
 486         def menu_close_window(self):
 487                 self.parent_window.destroy()
 488
 489         def menu_options(self):
 490                 rox.edit_options()
 491
 492         def menu_clear_undo(self):
 493                 if rox.confirm('Really clear the undo buffer?',
 494                                 g.STOCK_CLEAR):
 495                         self.view.model.clear_undo()
 496
 497         do_blank_all = make_do('blank_all')
 498         do_enter = make_do('enter')
 499         do_leave = make_do('leave')
 500         do_suck = make_do('suck')
 501         do_http_post = make_do('http_post')
 502         do_soap_send = make_do('soap_send')
 503         do_select_dups = make_do('select_dups')
 504         do_paste_attribs = make_do('paste_attribs')
 505         do_yank_value = make_do('yank_value')
 506         do_yank_attributes = make_do('yank_attribs')
 507         do_delete_node = make_do('delete_node')
 508         do_delete_node_no_clipboard = make_do('delete_node_no_clipboard')
 509         do_delete_shallow = make_do('delete_shallow')
 510         do_yank = make_do('yank')
 511         do_shallow_yank = make_do('shallow_yank')
 512         do_put_replace = make_do('put_replace')
 513         do_put_as_child = make_do('put_as_child')
 514         do_put_before = make_do('put_before')
 515         do_put_after = make_do('put_after')
 516         do_undo = make_do('undo')
 517         do_redo = make_do('redo')
 518         do_fail = make_do('fail')
 519         do_pass = make_do('do_pass')
 520         do_toggle_hidden = make_do('toggle_hidden')
 521         do_show_html = make_do('show_html')
 522         do_show_canvas = make_do('show_canvas')
 523         do_compare = make_do('compare')
 524         do_again = make_do('again')
 525         do_normalise = make_do('normalise')
 526         do_convert_to_text = make_do('convert_to_text')
 527         do_convert_to_comment = make_do('convert_to_comment')
 528         do_convert_to_element = make_do('convert_to_element')
 529         do_convert_to_pi = make_do('convert_to_pi')
 530         do_remove_ns = make_do('remove_ns')
 531
 532         do_clear_mark = make_do('clear_mark')
 533         do_move_marked = make_do('move_marked')
 534         do_mark_switch = make_do('mark_switch')
 535         do_mark_selection = make_do('mark_selection')
 536         do_select_marked = make_do('select_marked_region')
 537         do_select_children = make_do('select_children')
 538
 539         move_home = make_do('move_home')
 540         move_end = make_do('move_end')
 541         move_left = make_do('move_left')
 542         move_right = make_do('move_right')
 543         move_next_sib = make_do('move_next_sib')
 544         move_prev_sib = make_do('move_prev_sib')