280 lines
13 KiB
JavaScript
280 lines
13 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports["default"] = void 0;
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var Log = _interopRequireWildcard(require("../util/logging.js"));
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var _events = require("../util/events.js");
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var KeyboardUtil = _interopRequireWildcard(require("./util.js"));
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var _keysym = _interopRequireDefault(require("./keysym.js"));
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var browser = _interopRequireWildcard(require("../util/browser.js"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
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function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
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function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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function _typeof(obj) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) { return typeof obj; } : function (obj) { return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }, _typeof(obj); }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, _toPropertyKey(descriptor.key), descriptor); } }
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function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); Object.defineProperty(Constructor, "prototype", { writable: false }); return Constructor; }
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function _toPropertyKey(arg) { var key = _toPrimitive(arg, "string"); return _typeof(key) === "symbol" ? key : String(key); }
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function _toPrimitive(input, hint) { if (_typeof(input) !== "object" || input === null) return input; var prim = input[Symbol.toPrimitive]; if (prim !== undefined) { var res = prim.call(input, hint || "default"); if (_typeof(res) !== "object") return res; throw new TypeError("@@toPrimitive must return a primitive value."); } return (hint === "string" ? String : Number)(input); }
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//
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// Keyboard event handler
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//
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var Keyboard = /*#__PURE__*/function () {
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function Keyboard(target) {
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_classCallCheck(this, Keyboard);
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this._target = target || null;
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this._keyDownList = {}; // List of depressed keys
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// (even if they are happy)
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this._altGrArmed = false; // Windows AltGr detection
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// keep these here so we can refer to them later
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this._eventHandlers = {
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'keyup': this._handleKeyUp.bind(this),
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'keydown': this._handleKeyDown.bind(this),
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'blur': this._allKeysUp.bind(this)
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};
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// ===== EVENT HANDLERS =====
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this.onkeyevent = function () {}; // Handler for key press/release
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}
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// ===== PRIVATE METHODS =====
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_createClass(Keyboard, [{
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key: "_sendKeyEvent",
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value: function _sendKeyEvent(keysym, code, down) {
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if (down) {
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this._keyDownList[code] = keysym;
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} else {
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// Do we really think this key is down?
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if (!(code in this._keyDownList)) {
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return;
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}
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delete this._keyDownList[code];
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}
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Log.Debug("onkeyevent " + (down ? "down" : "up") + ", keysym: " + keysym, ", code: " + code);
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this.onkeyevent(keysym, code, down);
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}
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}, {
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key: "_getKeyCode",
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value: function _getKeyCode(e) {
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var code = KeyboardUtil.getKeycode(e);
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if (code !== 'Unidentified') {
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return code;
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}
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// Unstable, but we don't have anything else to go on
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if (e.keyCode) {
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// 229 is used for composition events
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if (e.keyCode !== 229) {
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return 'Platform' + e.keyCode;
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}
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}
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// A precursor to the final DOM3 standard. Unfortunately it
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// is not layout independent, so it is as bad as using keyCode
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if (e.keyIdentifier) {
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// Non-character key?
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if (e.keyIdentifier.substr(0, 2) !== 'U+') {
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return e.keyIdentifier;
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}
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var codepoint = parseInt(e.keyIdentifier.substr(2), 16);
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var _char = String.fromCharCode(codepoint).toUpperCase();
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return 'Platform' + _char.charCodeAt();
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}
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return 'Unidentified';
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}
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}, {
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key: "_handleKeyDown",
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value: function _handleKeyDown(e) {
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var code = this._getKeyCode(e);
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var keysym = KeyboardUtil.getKeysym(e);
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// Windows doesn't have a proper AltGr, but handles it using
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// fake Ctrl+Alt. However the remote end might not be Windows,
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// so we need to merge those in to a single AltGr event. We
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// detect this case by seeing the two key events directly after
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// each other with a very short time between them (<50ms).
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if (this._altGrArmed) {
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this._altGrArmed = false;
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clearTimeout(this._altGrTimeout);
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if (code === "AltRight" && e.timeStamp - this._altGrCtrlTime < 50) {
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// FIXME: We fail to detect this if either Ctrl key is
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// first manually pressed as Windows then no
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// longer sends the fake Ctrl down event. It
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// does however happily send real Ctrl events
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// even when AltGr is already down. Some
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// browsers detect this for us though and set the
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// key to "AltGraph".
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keysym = _keysym["default"].XK_ISO_Level3_Shift;
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} else {
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this._sendKeyEvent(_keysym["default"].XK_Control_L, "ControlLeft", true);
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}
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}
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// We cannot handle keys we cannot track, but we also need
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// to deal with virtual keyboards which omit key info
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if (code === 'Unidentified') {
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if (keysym) {
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// If it's a virtual keyboard then it should be
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// sufficient to just send press and release right
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// after each other
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this._sendKeyEvent(keysym, code, true);
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this._sendKeyEvent(keysym, code, false);
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}
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(0, _events.stopEvent)(e);
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return;
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}
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// Alt behaves more like AltGraph on macOS, so shuffle the
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// keys around a bit to make things more sane for the remote
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// server. This method is used by RealVNC and TigerVNC (and
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// possibly others).
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if (browser.isMac() || browser.isIOS()) {
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switch (keysym) {
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case _keysym["default"].XK_Super_L:
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keysym = _keysym["default"].XK_Alt_L;
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break;
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case _keysym["default"].XK_Super_R:
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keysym = _keysym["default"].XK_Super_L;
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break;
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case _keysym["default"].XK_Alt_L:
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keysym = _keysym["default"].XK_Mode_switch;
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break;
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case _keysym["default"].XK_Alt_R:
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keysym = _keysym["default"].XK_ISO_Level3_Shift;
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break;
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}
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}
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// Is this key already pressed? If so, then we must use the
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// same keysym or we'll confuse the server
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if (code in this._keyDownList) {
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keysym = this._keyDownList[code];
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}
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// macOS doesn't send proper key releases if a key is pressed
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// while meta is held down
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if ((browser.isMac() || browser.isIOS()) && e.metaKey && code !== 'MetaLeft' && code !== 'MetaRight') {
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this._sendKeyEvent(keysym, code, true);
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this._sendKeyEvent(keysym, code, false);
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(0, _events.stopEvent)(e);
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return;
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}
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// macOS doesn't send proper key events for modifiers, only
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// state change events. That gets extra confusing for CapsLock
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// which toggles on each press, but not on release. So pretend
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// it was a quick press and release of the button.
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if ((browser.isMac() || browser.isIOS()) && code === 'CapsLock') {
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this._sendKeyEvent(_keysym["default"].XK_Caps_Lock, 'CapsLock', true);
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this._sendKeyEvent(_keysym["default"].XK_Caps_Lock, 'CapsLock', false);
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(0, _events.stopEvent)(e);
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return;
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}
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// Windows doesn't send proper key releases for a bunch of
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// Japanese IM keys so we have to fake the release right away
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var jpBadKeys = [_keysym["default"].XK_Zenkaku_Hankaku, _keysym["default"].XK_Eisu_toggle, _keysym["default"].XK_Katakana, _keysym["default"].XK_Hiragana, _keysym["default"].XK_Romaji];
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if (browser.isWindows() && jpBadKeys.includes(keysym)) {
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this._sendKeyEvent(keysym, code, true);
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this._sendKeyEvent(keysym, code, false);
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(0, _events.stopEvent)(e);
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return;
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}
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(0, _events.stopEvent)(e);
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// Possible start of AltGr sequence? (see above)
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if (code === "ControlLeft" && browser.isWindows() && !("ControlLeft" in this._keyDownList)) {
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this._altGrArmed = true;
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this._altGrTimeout = setTimeout(this._handleAltGrTimeout.bind(this), 100);
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this._altGrCtrlTime = e.timeStamp;
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return;
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}
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this._sendKeyEvent(keysym, code, true);
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}
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}, {
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key: "_handleKeyUp",
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value: function _handleKeyUp(e) {
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(0, _events.stopEvent)(e);
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var code = this._getKeyCode(e);
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// We can't get a release in the middle of an AltGr sequence, so
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// abort that detection
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if (this._altGrArmed) {
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this._altGrArmed = false;
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clearTimeout(this._altGrTimeout);
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this._sendKeyEvent(_keysym["default"].XK_Control_L, "ControlLeft", true);
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}
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// See comment in _handleKeyDown()
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if ((browser.isMac() || browser.isIOS()) && code === 'CapsLock') {
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this._sendKeyEvent(_keysym["default"].XK_Caps_Lock, 'CapsLock', true);
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this._sendKeyEvent(_keysym["default"].XK_Caps_Lock, 'CapsLock', false);
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return;
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}
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this._sendKeyEvent(this._keyDownList[code], code, false);
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// Windows has a rather nasty bug where it won't send key
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// release events for a Shift button if the other Shift is still
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// pressed
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if (browser.isWindows() && (code === 'ShiftLeft' || code === 'ShiftRight')) {
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if ('ShiftRight' in this._keyDownList) {
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this._sendKeyEvent(this._keyDownList['ShiftRight'], 'ShiftRight', false);
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}
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if ('ShiftLeft' in this._keyDownList) {
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this._sendKeyEvent(this._keyDownList['ShiftLeft'], 'ShiftLeft', false);
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}
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}
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}
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}, {
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key: "_handleAltGrTimeout",
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value: function _handleAltGrTimeout() {
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this._altGrArmed = false;
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clearTimeout(this._altGrTimeout);
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this._sendKeyEvent(_keysym["default"].XK_Control_L, "ControlLeft", true);
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}
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}, {
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key: "_allKeysUp",
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value: function _allKeysUp() {
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Log.Debug(">> Keyboard.allKeysUp");
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for (var code in this._keyDownList) {
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this._sendKeyEvent(this._keyDownList[code], code, false);
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}
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Log.Debug("<< Keyboard.allKeysUp");
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}
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// ===== PUBLIC METHODS =====
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}, {
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key: "grab",
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value: function grab() {
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//Log.Debug(">> Keyboard.grab");
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this._target.addEventListener('keydown', this._eventHandlers.keydown);
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this._target.addEventListener('keyup', this._eventHandlers.keyup);
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// Release (key up) if window loses focus
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window.addEventListener('blur', this._eventHandlers.blur);
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//Log.Debug("<< Keyboard.grab");
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}
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}, {
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key: "ungrab",
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value: function ungrab() {
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//Log.Debug(">> Keyboard.ungrab");
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this._target.removeEventListener('keydown', this._eventHandlers.keydown);
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this._target.removeEventListener('keyup', this._eventHandlers.keyup);
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window.removeEventListener('blur', this._eventHandlers.blur);
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// Release (key up) all keys that are in a down state
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this._allKeysUp();
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//Log.Debug(">> Keyboard.ungrab");
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}
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}]);
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return Keyboard;
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}();
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exports["default"] = Keyboard; |