56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
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class LoginCompleter:
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""" A loop-based completion system for logins """
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def __init__(self, menu):
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self.s = ""
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self.logins = None
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self.completions = []
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# completion_id has a value of -1 for the base user input
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# and between 0 and len(completions)-1 for completions
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self.completion_id = -1
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self.completion_base = ""
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self.menu = menu
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def initialize(self):
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""" Initialise the list of completable logins """
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garden = self.menu.user_data.retrieve_garden_from_db()
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self.logins = set()
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for plant_id in garden:
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if not garden[plant_id]:
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continue
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entry = garden[plant_id]
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if "owner" in entry:
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self.logins.add(entry["owner"])
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self.logins = sorted(list(self.logins))
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def update_input(self, s):
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""" Update the user input and reset completion base """
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self.s = s
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self.completion_base = self.s
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self.completion_id = -1
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def complete(self, direction = 1):
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"""
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Returns the completed string from the user input
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Loops forward in the list of logins if direction is positive, and
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backwards if direction is negative
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"""
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def loginFilter(x):
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return x.startswith(self.s) & (x != self.s)
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# Refresh possible completions after the user edits
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if self.completion_id == -1:
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if self.logins is None:
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self.initialize()
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self.completion_base = self.s
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self.completions = list(filter(loginFilter, self.logins))
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self.completion_id += direction
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# Loop from the back
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if self.completion_id == -2:
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self.completion_id = len(self.completions) - 1
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# If we are at the base input, return it
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if self.completion_id == -1 or self.completion_id == len(self.completions):
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self.completion_id = -1
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return self.completion_base
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return self.completions[self.completion_id]
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