node-libuiohook/lib/iohook.js

NodeJS bindings for libuiohook

/// <reference path="../index.d.ts" />
Object.defineProperty(exports, "__esModule", { value: true });
const events_1 = require("events");
const native = require("./iohook.node");
const enums_1 = require("./enums");
let EVENTS = null;
function initEvents() {
    if (!!EVENTS)
        return;
    EVENTS = new Map();
    EVENTS.set(3, enums_1.Events.keypress);
    EVENTS.set(4, enums_1.Events.keydown);
    EVENTS.set(5, enums_1.Events.keyup);
    EVENTS.set(6, enums_1.Events.mouseclick);
    EVENTS.set(7, enums_1.Events.mousedown);
    EVENTS.set(8, enums_1.Events.mouseup);
    EVENTS.set(9, enums_1.Events.mousemove);
    EVENTS.set(10, enums_1.Events.mousedrag);
    EVENTS.set(11, enums_1.Events.mousewheel);
}
class IOHook extends events_1.EventEmitter {
    constructor() {
        super();
        initEvents();
        this._isActive = false;
        this._startHook();
    }
    start() {
        this._startHook();
        this._isActive = true;
    }
    pause() {
        this._isActive = false;
    }
    stop() {
        this.pause();
        this._stopHook();
    }
    _startHook() {
        if (this._isHookStarted)
            return;
        this._isHookStarted = true;
        native.startHook(this._nativeEventHandler.bind(this));
    }
    _stopHook() {
        if (!this._isHookStarted)
            return;
        this._isHookStarted = false;
        native.stopHook();
    }
    _nativeEventHandler(nativeEvent) {
        if (!nativeEvent || !this._isActive)
            return;
        if (!EVENTS.has(nativeEvent.type)) {
            console.warn("unrecognized event type: ", nativeEvent.type, nativeEvent);
            return;
        }
        let event = {
            type: EVENTS.get(nativeEvent.type),
            mask: nativeEvent.mask,
        };
        event = Object.assign({}, event, nativeEvent.mouse || nativeEvent.keyboard || nativeEvent.wheel);
        this._decorateEventWithModifiers(event);
        this.emit(event.type, event);
    }
    _decorateEventWithModifiers(event) {
        event.isShiftPressed = (event.mask & enums_1.KeyModifiersMasks.Shift_L) === enums_1.KeyModifiersMasks.Shift_L
            || (event.mask & enums_1.KeyModifiersMasks.Shift_R) === enums_1.KeyModifiersMasks.Shift_R;
        event.isCtrlPressed = (event.mask & enums_1.KeyModifiersMasks.Ctrl_L) === enums_1.KeyModifiersMasks.Ctrl_L
            || (event.mask & enums_1.KeyModifiersMasks.Ctrl_R) === enums_1.KeyModifiersMasks.Ctrl_R;
        event.isAltPressed = (event.mask & enums_1.KeyModifiersMasks.Alt_L) === enums_1.KeyModifiersMasks.Alt_L
            || (event.mask & enums_1.KeyModifiersMasks.Alt_R) === enums_1.KeyModifiersMasks.Alt_R;
        event.isMetaPressed = (event.mask & enums_1.KeyModifiersMasks.Meta_L) === enums_1.KeyModifiersMasks.Meta_L
            || (event.mask & enums_1.KeyModifiersMasks.Meta_R) === enums_1.KeyModifiersMasks.Meta_R;
    }
}
exports.IOHook = IOHook;