robonen
09272dffeb
@robonen/editor: migrate to eslint flat config + composite tsconfig; fix convergence test type annotations.
53 lines
1.7 KiB
TypeScript
53 lines
1.7 KiB
TypeScript
import type { Platform } from '../view/config';
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const MOD_ORDER = ['Ctrl', 'Alt', 'Shift', 'Meta'] as const;
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function modAlias(token: string, platform: Platform): string | null {
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switch (token.toLowerCase()) {
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case 'mod': return platform === 'mac' ? 'Meta' : 'Ctrl';
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case 'cmd':
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case 'command':
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case 'meta': return 'Meta';
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case 'ctrl':
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case 'control': return 'Ctrl';
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case 'alt':
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case 'option': return 'Alt';
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case 'shift': return 'Shift';
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default: return null;
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}
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}
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/**
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* Normalize a human combo (`'Mod-Shift-z'`) to a canonical, platform-resolved
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* form (`'Shift-Meta-z'` on mac). Modifiers are ordered deterministically so a
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* keydown event maps to the same string via {@link eventToCombo}.
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*/
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export function normalizeCombo(combo: string, platform: Platform): string {
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const parts = combo.split(/[-+]/).map(part => part.trim()).filter(Boolean);
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const key = parts.pop() ?? '';
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const mods = new Set<string>();
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for (const part of parts) {
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const mod = modAlias(part, platform);
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if (mod)
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mods.add(mod);
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}
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const order = MOD_ORDER.filter(mod => mods.has(mod));
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const normalizedKey = key.length === 1 ? key.toLowerCase() : key;
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return [...order, normalizedKey].join('-');
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}
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/** Canonical combo string for a keydown event (matches {@link normalizeCombo}). */
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export function eventToCombo(event: KeyboardEvent): string {
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const mods: string[] = [];
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if (event.ctrlKey) mods.push('Ctrl');
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if (event.altKey) mods.push('Alt');
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if (event.shiftKey) mods.push('Shift');
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if (event.metaKey) mods.push('Meta');
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const key = event.key.length === 1 ? event.key.toLowerCase() : event.key;
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return [...mods, key].join('-');
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}
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