98 lines
3.4 KiB
Python
98 lines
3.4 KiB
Python
from __future__ import annotations
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from dataclasses import dataclass
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from falyx.action import BaseAction
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from falyx.signals import BackSignal, QuitSignal
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from falyx.themes import OneColors
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from falyx.utils import CaseInsensitiveDict
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@dataclass
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class MenuOption:
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"""Represents a single menu option with a description and an action to execute."""
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description: str
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action: BaseAction
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style: str = OneColors.WHITE
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def __post_init__(self):
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if not isinstance(self.description, str):
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raise TypeError("MenuOption description must be a string.")
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if not isinstance(self.action, BaseAction):
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raise TypeError("MenuOption action must be a BaseAction instance.")
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def render(self, key: str) -> str:
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"""Render the menu option for display."""
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return f"[{OneColors.WHITE}][{key}][/] [{self.style}]{self.description}[/]"
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class MenuOptionMap(CaseInsensitiveDict):
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"""
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Manages menu options including validation, reserved key protection,
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and special signal entries like Quit and Back.
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"""
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RESERVED_KEYS = {"B", "X"}
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def __init__(
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self,
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options: dict[str, MenuOption] | None = None,
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allow_reserved: bool = False,
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):
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super().__init__()
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self.allow_reserved = allow_reserved
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if options:
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self.update(options)
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self._inject_reserved_defaults()
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def _inject_reserved_defaults(self):
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from falyx.action import SignalAction
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self._add_reserved(
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"B",
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MenuOption("Back", SignalAction("Back", BackSignal()), OneColors.DARK_YELLOW),
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)
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self._add_reserved(
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"X",
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MenuOption("Exit", SignalAction("Quit", QuitSignal()), OneColors.DARK_RED),
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)
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def _add_reserved(self, key: str, option: MenuOption) -> None:
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"""Add a reserved key, bypassing validation."""
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norm_key = key.upper()
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super().__setitem__(norm_key, option)
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def __setitem__(self, key: str, option: MenuOption) -> None:
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if not isinstance(option, MenuOption):
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raise TypeError(f"Value for key '{key}' must be a MenuOption.")
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norm_key = key.upper()
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if norm_key in self.RESERVED_KEYS and not self.allow_reserved:
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raise ValueError(
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f"Key '{key}' is reserved and cannot be used in MenuOptionMap."
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)
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super().__setitem__(norm_key, option)
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def __delitem__(self, key: str) -> None:
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if key.upper() in self.RESERVED_KEYS and not self.allow_reserved:
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raise ValueError(f"Cannot delete reserved option '{key}'.")
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super().__delitem__(key)
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def update(self, other=None, **kwargs):
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"""Update the selection options with another dictionary."""
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if other:
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for key, option in other.items():
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if not isinstance(option, MenuOption):
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raise TypeError(f"Value for key '{key}' must be a SelectionOption.")
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self[key] = option
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for key, option in kwargs.items():
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if not isinstance(option, MenuOption):
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raise TypeError(f"Value for key '{key}' must be a SelectionOption.")
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self[key] = option
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def items(self, include_reserved: bool = True):
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for key, option in super().items():
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if not include_reserved and key in self.RESERVED_KEYS:
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continue
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yield key, option
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