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      1 # Copyright 2014 The Chromium Authors. All rights reserved.
      2 # Use of this source code is governed by a BSD-style license that can be
      3 # found in the LICENSE file.
      4 
      5 """Holds the constants for pretty printing actions.xml."""
      6 
      7 import os
      8 import sys
      9 
     10 # Import the metrics/common module for pretty print xml.
     11 sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'common'))
     12 import pretty_print_xml
     13 
     14 # Desired order for tag and tag attributes.
     15 # { tag_name: [attribute_name, ...] }
     16 ATTRIBUTE_ORDER = {
     17     'action': ['name'],
     18     'owner': [],
     19     'description': [],
     20     'obsolete': [],
     21 }
     22 
     23 # Tag names for top-level nodes whose children we don't want to indent.
     24 TAGS_THAT_DONT_INDENT = ['actions']
     25 
     26 # Extra vertical spacing rules for special tag names.
     27 # {tag_name: (newlines_after_open, newlines_before_close, newlines_after_close)}
     28 TAGS_THAT_HAVE_EXTRA_NEWLINE = {
     29     'actions': (2, 1, 1),
     30     'action': (1, 1, 1),
     31 }
     32 
     33 # Tags that we allow to be squished into a single line for brevity.
     34 TAGS_THAT_ALLOW_SINGLE_LINE = ['owner', 'description', 'obsolete']
     35 
     36 def GetPrintStyle():
     37   """Returns an XmlStyle object for pretty printing actions."""
     38   return pretty_print_xml.XmlStyle(ATTRIBUTE_ORDER,
     39                                    TAGS_THAT_HAVE_EXTRA_NEWLINE,
     40                                    TAGS_THAT_DONT_INDENT,
     41                                    TAGS_THAT_ALLOW_SINGLE_LINE)
     42