import keyCode from './keycode'; import { concat } from '../../../prelude/array'; type pattern = { which: string[]; ctrl?: boolean; shift?: boolean; alt?: boolean; }; type action = { patterns: pattern[]; callback: Function; }; const getKeyMap = keymap => Object.entries(keymap).map(([patterns, callback]): action => { const result = { patterns: [], callback: callback } as action; result.patterns = patterns.split('|').map(part => { const pattern = { which: [], ctrl: false, alt: false, shift: false } as pattern; part.trim().split('+').forEach(key => { key = key.trim().toLowerCase(); switch (key) { case 'ctrl': pattern.ctrl = true; break; case 'alt': pattern.alt = true; break; case 'shift': pattern.shift = true; break; default: pattern.which = keyCode(key).map(k => k.toLowerCase()); } }); return pattern; }); return result; }); const ignoreElemens = ['input', 'textarea']; function match(e: KeyboardEvent, patterns: action['patterns']): boolean { const key = e.code.toLowerCase(); return patterns.some(pattern => pattern.which.includes(key) && pattern.ctrl == e.ctrlKey && pattern.shift == e.shiftKey && pattern.alt == e.altKey && e.metaKey == false ); } export default { install(Vue) { Vue.directive('hotkey', { bind(el, binding) { el._hotkey_global = binding.modifiers.global === true; const actions = getKeyMap(binding.value); // flatten const reservedKeys = concat(actions.map(a => a.patterns)); el._misskey_reservedKeys = reservedKeys; el._keyHandler = (e: KeyboardEvent) => { const targetReservedKeys = document.activeElement ? ((document.activeElement as any)._misskey_reservedKeys || []) : []; if (document.activeElement && ignoreElemens.some(el => document.activeElement.matches(el))) return; for (const action of actions) { const matched = match(e, action.patterns); if (matched) { if (el._hotkey_global) { if (match(e, targetReservedKeys)) { return; } } e.preventDefault(); e.stopPropagation(); action.callback(e); break; } } }; if (el._hotkey_global) { document.addEventListener('keydown', el._keyHandler); } else { el.addEventListener('keydown', el._keyHandler); } }, unbind(el) { if (el._hotkey_global) { document.removeEventListener('keydown', el._keyHandler); } else { el.removeEventListener('keydown', el._keyHandler); } } }); } };