Mercurial > libervia-backend

comparison frontends/src/tools/misc.py @ 2531:1dfc5516dead

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
frontends (tools/misc): new FlagsHandler class, a simple class to help handling option flags
author Goffi <goffi@goffi.org>
date Wed, 21 Mar 2018 19:07:06 +0100
parents 2daf7b4c6756
children
comparison
equal deleted inserted replaced
2530:0cb32e503aff 2531:1dfc5516dead
58 index_tmp = self.input_history_index + step 58 index_tmp = self.input_history_index + step
59 if index_tmp >= 0 and index_tmp < len(self.input_history_tmp): 59 if index_tmp >= 0 and index_tmp < len(self.input_history_tmp):
60 if callback is not None: 60 if callback is not None:
61 callback(self.input_history_tmp[index_tmp]) 61 callback(self.input_history_tmp[index_tmp])
62 self.input_history_index = index_tmp 62 self.input_history_index = index_tmp
63
64
65 class FlagsHandler(object):
66 """Small class to handle easily option flags
67
68 the instance is initialized with an iterable
69 then attribute return True if flag is set, False else.
70 WARNING: If a flag is checked, it is removed (i.e. unset)
71 this is done to use bool(flags_handler) to check if all flags
72 have been used
73 """
74
75 def __init__(self, flags):
76 self.flags = set(flags or [])
77
78 def __getattr__(self, flag):
79 try:
80 self.flags.remove(flag)
81 except KeyError:
82 return False
83 else:
84 return True
85
86 def __len__(self):
87 return len(self.flags)
88
89 def __iter__(self):
90 return self.flags.__iter__()