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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
/**
* {@link KeyboardEvent.code} の値を表す文字列。不足分は適宜追加する
* @see https://developer.mozilla.org/en-US/docs/Web/API/UI_Events/Keyboard_event_code_values
*/
export type KeyCode = (
| 'Backspace'
| 'Tab'
| 'Enter'
| 'Shift'
| 'Control'
| 'Alt'
| 'Pause'
| 'CapsLock'
| 'Escape'
| 'Space'
| 'PageUp'
| 'PageDown'
| 'End'
| 'Home'
| 'ArrowLeft'
| 'ArrowUp'
| 'ArrowRight'
| 'ArrowDown'
| 'Insert'
| 'Delete'
| 'Digit0'
| 'Digit1'
| 'Digit2'
| 'Digit3'
| 'Digit4'
| 'Digit5'
| 'Digit6'
| 'Digit7'
| 'Digit8'
| 'Digit9'
| 'KeyA'
| 'KeyB'
| 'KeyC'
| 'KeyD'
| 'KeyE'
| 'KeyF'
| 'KeyG'
| 'KeyH'
| 'KeyI'
| 'KeyJ'
| 'KeyK'
| 'KeyL'
| 'KeyM'
| 'KeyN'
| 'KeyO'
| 'KeyP'
| 'KeyQ'
| 'KeyR'
| 'KeyS'
| 'KeyT'
| 'KeyU'
| 'KeyV'
| 'KeyW'
| 'KeyX'
| 'KeyY'
| 'KeyZ'
| 'MetaLeft'
| 'MetaRight'
| 'ContextMenu'
| 'F1'
| 'F2'
| 'F3'
| 'F4'
| 'F5'
| 'F6'
| 'F7'
| 'F8'
| 'F9'
| 'F10'
| 'F11'
| 'F12'
| 'NumLock'
| 'ScrollLock'
| 'Semicolon'
| 'Equal'
| 'Comma'
| 'Minus'
| 'Period'
| 'Slash'
| 'Backquote'
| 'BracketLeft'
| 'Backslash'
| 'BracketRight'
| 'Quote'
| 'Meta'
| 'AltGraph'
);
/**
* 修飾キーを表す文字列。不足分は適宜追加する。
*/
export type KeyModifier = (
| 'Shift'
| 'Control'
| 'Alt'
| 'Meta'
);
/**
* 押下されたキー以外の状態を表す文字列。不足分は適宜追加する。
*/
export type KeyState = (
| 'composing'
| 'repeat'
);
export type KeyEventHandler = {
modifiers?: KeyModifier[];
states?: KeyState[];
code: KeyCode | 'any';
handler: (event: KeyboardEvent) => void;
};
export function handleKeyEvent(event: KeyboardEvent, handlers: KeyEventHandler[]) {
function checkModifier(ev: KeyboardEvent, modifiers? : KeyModifier[]) {
if (modifiers) {
return modifiers.every(modifier => ev.getModifierState(modifier));
}
return true;
}
function checkState(ev: KeyboardEvent, states?: KeyState[]) {
if (states) {
return states.every(state => ev.getModifierState(state));
}
return true;
}
let hit = false;
for (const handler of handlers.filter(it => it.code === event.code)) {
if (checkModifier(event, handler.modifiers) && checkState(event, handler.states)) {
handler.handler(event);
hit = true;
break;
}
}
if (!hit) {
for (const handler of handlers.filter(it => it.code === 'any')) {
handler.handler(event);
}
}
}
|
