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from typing import Dict, List, Union, Any, TYPE_CHECKING
from archinstall.lib.menu.simple_menu import TerminalMenu
from ..exceptions import RequirementError
from ..output import log
from collections.abc import Iterable
import sys
import logging
if TYPE_CHECKING:
_: Any
class Menu(TerminalMenu):
def __init__(
self,
title :str,
p_options :Union[List[str], Dict[str, Any]],
skip :bool = True,
multi :bool = False,
default_option :str = None,
sort :bool = True,
preset_values :Union[str, List[str]] = None,
cursor_index :int = None,
preview_command=None,
preview_size=0.75,
preview_title='Info',
header :Union[List[str],str] = None,
**kwargs
):
"""
Creates a new menu
:param title: Text that will be displayed above the menu
:type title: str
:param p_options: Options to be displayed in the menu to chose from;
if dict is specified then the keys of such will be used as options
:type options: list, dict
:param skip: Indicate if the selection is not mandatory and can be skipped
:type skip: bool
:param multi: Indicate if multiple options can be selected
:type multi: bool
:param default_option: The default option to be used in case the selection processes is skipped
:type default_option: str
:param sort: Indicate if the options should be sorted alphabetically before displaying
:type sort: bool
:param preset_values: Predefined value(s) of the menu. In a multi menu, it selects the options included therein. If the selection is simple, moves the cursor to the position of the value
:type preset_values: str or list
:param cursor_index: The position where the cursor will be located. If it is not in range (number of elements of the menu) it goes to the first position
:type cursor_index: int
:param preview_command: A function that should return a string that will be displayed in a preview window when a menu selection item is in focus
:type preview_command: Callable
:param preview_size: Size of the preview window in ratio to the full window
:type preview_size: float
:param preview_title: Title of the preview window
:type preview_title: str
param: header one or more header lines for the menu
type param: string or list
:param kwargs : any SimpleTerminal parameter
"""
# we guarantee the inmutability of the options outside the class.
# an unknown number of iterables (.keys(),.values(),generator,...) can't be directly copied, in this case
# we recourse to make them lists before, but thru an exceptions
# this is the old code, which is not maintenable with more types
# options = copy(list(p_options) if isinstance(p_options,(type({}.keys()),type({}.values()))) else p_options)
# We check that the options are iterable. If not we abort. Else we copy them to lists
# it options is a dictionary we use the values as entries of the list
# if options is a string object, each character becomes an entry
# if options is a list, we implictily build a copy to mantain immutability
if not isinstance(p_options,Iterable):
log(f"Objects of type {type(p_options)} is not iterable, and are not supported at Menu",fg="red")
log(f"invalid parameter at Menu() call was at <{sys._getframe(1).f_code.co_name}>",level=logging.WARNING)
raise RequirementError("Menu() requires an iterable as option.")
if isinstance(p_options,dict):
options = list(p_options.keys())
else:
options = list(p_options)
if not options:
log(" * Menu didn't find any options to choose from * ", fg='red')
log(f"invalid parameter at Menu() call was at <{sys._getframe(1).f_code.co_name}>",level=logging.WARNING)
raise RequirementError('Menu.__init__() requires at least one option to proceed.')
if any([o for o in options if not isinstance(o, str)]):
log(" * Menu options must be of type string * ", fg='red')
log(f"invalid parameter at Menu() call was at <{sys._getframe(1).f_code.co_name}>",level=logging.WARNING)
raise RequirementError('Menu.__init__() requires the options to be of type string')
if sort:
options = sorted(options)
self.menu_options = options
self.skip = skip
self.default_option = default_option
self.multi = multi
menu_title = f'\n{title}\n\n'
if header:
separator = '\n '
if not isinstance(header,(list,tuple)):
header = [header,]
if skip:
menu_title += str(_("Use ESC to skip\n"))
menu_title += separator + separator.join(header)
elif skip:
menu_title += str(_("Use ESC to skip\n\n"))
if default_option:
# if a default value was specified we move that one
# to the top of the list and mark it as default as well
default = f'{default_option} (default)'
self.menu_options = [default] + [o for o in self.menu_options if default_option != o]
self.preselection(preset_values,cursor_index)
cursor = "> "
main_menu_cursor_style = ("fg_cyan", "bold")
main_menu_style = ("bg_blue", "fg_gray")
# defaults that can be changed up the stack
kwargs['clear_screen'] = kwargs.get('clear_screen',True)
kwargs['show_search_hint'] = kwargs.get('show_search_hint',True)
kwargs['cycle_cursor'] = kwargs.get('cycle_cursor',True)
super().__init__(
menu_entries=self.menu_options,
title=menu_title,
menu_cursor=cursor,
menu_cursor_style=main_menu_cursor_style,
menu_highlight_style=main_menu_style,
# cycle_cursor=True,
# clear_screen=True,
multi_select=multi,
# show_search_hint=True,
preselected_entries=self.preset_values,
cursor_index=self.cursor_index,
preview_command=preview_command,
preview_size=preview_size,
preview_title=preview_title,
**kwargs,
)
def _show(self):
idx = self.show()
if idx is not None:
if isinstance(idx, (list, tuple)):
return [self.default_option if ' (default)' in self.menu_options[i] else self.menu_options[i] for i in idx]
else:
selected = self.menu_options[idx]
if ' (default)' in selected and self.default_option:
return self.default_option
return selected
else:
if self.default_option:
if self.multi:
return [self.default_option]
else:
return self.default_option
return None
def run(self):
ret = self._show()
if ret is None and not self.skip:
return self.run()
return ret
def set_cursor_pos(self,pos :int):
if pos and 0 < pos < len(self._menu_entries):
self._view.active_menu_index = pos
else:
self._view.active_menu_index = 0 # we define a default
def set_cursor_pos_entry(self,value :str):
pos = self._menu_entries.index(value)
self.set_cursor_pos(pos)
def preselection(self,preset_values :list = [],cursor_index :int = None):
def from_preset_to_cursor():
if preset_values:
# if the value is not extant return 0 as cursor index
try:
if isinstance(preset_values,str):
self.cursor_index = self.menu_options.index(self.preset_values)
else: # should return an error, but this is smoother
self.cursor_index = self.menu_options.index(self.preset_values[0])
except ValueError:
self.cursor_index = 0
self.cursor_index = cursor_index
if not preset_values:
self.preset_values = None
return
self.preset_values = preset_values
if self.default_option:
if isinstance(preset_values,str) and self.default_option == preset_values:
self.preset_values = f"{preset_values} (default)"
elif isinstance(preset_values,(list,tuple)) and self.default_option in preset_values:
idx = preset_values.index(self.default_option)
self.preset_values[idx] = f"{preset_values[idx]} (default)"
if cursor_index is None or not self.multi:
from_preset_to_cursor()
if not self.multi: # Not supported by the infraestructure
self.preset_values = None
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