126 lines
4.2 KiB
JavaScript
126 lines
4.2 KiB
JavaScript
/**
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* @license
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* Copyright 2020 Google Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/**
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* KEY provides normalized string values for keys.
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*/
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export var KEY = {
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UNKNOWN: 'Unknown',
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BACKSPACE: 'Backspace',
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ENTER: 'Enter',
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SPACEBAR: 'Spacebar',
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PAGE_UP: 'PageUp',
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PAGE_DOWN: 'PageDown',
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END: 'End',
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HOME: 'Home',
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ARROW_LEFT: 'ArrowLeft',
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ARROW_UP: 'ArrowUp',
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ARROW_RIGHT: 'ArrowRight',
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ARROW_DOWN: 'ArrowDown',
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DELETE: 'Delete',
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ESCAPE: 'Escape',
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TAB: 'Tab',
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};
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var normalizedKeys = new Set();
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// IE11 has no support for new Map with iterable so we need to initialize this
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// by hand.
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normalizedKeys.add(KEY.BACKSPACE);
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normalizedKeys.add(KEY.ENTER);
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normalizedKeys.add(KEY.SPACEBAR);
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normalizedKeys.add(KEY.PAGE_UP);
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normalizedKeys.add(KEY.PAGE_DOWN);
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normalizedKeys.add(KEY.END);
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normalizedKeys.add(KEY.HOME);
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normalizedKeys.add(KEY.ARROW_LEFT);
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normalizedKeys.add(KEY.ARROW_UP);
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normalizedKeys.add(KEY.ARROW_RIGHT);
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normalizedKeys.add(KEY.ARROW_DOWN);
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normalizedKeys.add(KEY.DELETE);
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normalizedKeys.add(KEY.ESCAPE);
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normalizedKeys.add(KEY.TAB);
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var KEY_CODE = {
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BACKSPACE: 8,
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ENTER: 13,
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SPACEBAR: 32,
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PAGE_UP: 33,
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PAGE_DOWN: 34,
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END: 35,
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HOME: 36,
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ARROW_LEFT: 37,
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ARROW_UP: 38,
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ARROW_RIGHT: 39,
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ARROW_DOWN: 40,
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DELETE: 46,
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ESCAPE: 27,
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TAB: 9,
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};
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var mappedKeyCodes = new Map();
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// IE11 has no support for new Map with iterable so we need to initialize this
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// by hand.
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mappedKeyCodes.set(KEY_CODE.BACKSPACE, KEY.BACKSPACE);
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mappedKeyCodes.set(KEY_CODE.ENTER, KEY.ENTER);
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mappedKeyCodes.set(KEY_CODE.SPACEBAR, KEY.SPACEBAR);
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mappedKeyCodes.set(KEY_CODE.PAGE_UP, KEY.PAGE_UP);
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mappedKeyCodes.set(KEY_CODE.PAGE_DOWN, KEY.PAGE_DOWN);
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mappedKeyCodes.set(KEY_CODE.END, KEY.END);
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mappedKeyCodes.set(KEY_CODE.HOME, KEY.HOME);
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mappedKeyCodes.set(KEY_CODE.ARROW_LEFT, KEY.ARROW_LEFT);
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mappedKeyCodes.set(KEY_CODE.ARROW_UP, KEY.ARROW_UP);
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mappedKeyCodes.set(KEY_CODE.ARROW_RIGHT, KEY.ARROW_RIGHT);
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mappedKeyCodes.set(KEY_CODE.ARROW_DOWN, KEY.ARROW_DOWN);
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mappedKeyCodes.set(KEY_CODE.DELETE, KEY.DELETE);
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mappedKeyCodes.set(KEY_CODE.ESCAPE, KEY.ESCAPE);
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mappedKeyCodes.set(KEY_CODE.TAB, KEY.TAB);
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var navigationKeys = new Set();
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// IE11 has no support for new Set with iterable so we need to initialize this
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// by hand.
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navigationKeys.add(KEY.PAGE_UP);
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navigationKeys.add(KEY.PAGE_DOWN);
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navigationKeys.add(KEY.END);
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navigationKeys.add(KEY.HOME);
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navigationKeys.add(KEY.ARROW_LEFT);
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navigationKeys.add(KEY.ARROW_UP);
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navigationKeys.add(KEY.ARROW_RIGHT);
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navigationKeys.add(KEY.ARROW_DOWN);
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/**
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* normalizeKey returns the normalized string for a navigational action.
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*/
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export function normalizeKey(evt) {
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var key = evt.key;
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// If the event already has a normalized key, return it
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if (normalizedKeys.has(key)) {
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return key;
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}
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// tslint:disable-next-line:deprecation
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var mappedKey = mappedKeyCodes.get(evt.keyCode);
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if (mappedKey) {
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return mappedKey;
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}
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return KEY.UNKNOWN;
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}
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/**
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* isNavigationEvent returns whether the event is a navigation event
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*/
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export function isNavigationEvent(evt) {
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return navigationKeys.has(normalizeKey(evt));
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}
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//# sourceMappingURL=keyboard.js.map
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