ngx-hotkey/fesm2015/ngx-hotkey.js

An easy way to use Hotkeys in Angular.

import { Injectable, defineInjectable } from '@angular/core';

/**
 * @fileoverview added by tsickle
 * Generated from: lib/hotkey.model.ts
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
class Hotkey {
    /**
     * @param {?} shortcut
     * @param {?} callback
     */
    constructor(shortcut, callback) {
        this.shortcut = shortcut;
        this.callback = callback;
        this.altKey = false;
        this.ctrlKey = false;
        this.metaKey = false;
        this.shiftKey = false;
        this.aliases = {
            'ctrl': 'control'
        };
        /** @type {?} */
        const shortcutFormatted = shortcut.replace(/ /g, '').toLowerCase();
        /** @type {?} */
        const shortcutSplit = shortcutFormatted.split('+');
        for (let i = 0; i < shortcutSplit.length; i++) {
            /** @type {?} */
            let item = shortcutSplit[i];
            item = this.aliases[item] || item;
            if (i === shortcutSplit.length - 1) {
                this.key = item;
                continue;
            }
            switch (item) {
                case 'shift':
                    this.shiftKey = true;
                    break;
                case 'control':
                    this.ctrlKey = true;
                    break;
                case 'alt':
                    this.altKey = true;
                    break;
                case 'meta':
                    this.metaKey = true;
                    break;
                default:
                    console.error(`They shortcut '${shortcut}' is not valid!`);
            }
        }
    }
}

/**
 * @fileoverview added by tsickle
 * Generated from: lib/ngx-hotkey.service.ts
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
class NgxHotkeyService {
    constructor() {
        this.hotkeys = [];
        document.addEventListener('keydown', this.checkKeyDown.bind(this), false);
        document.addEventListener('keyup', this.onKeyUp.bind(this), false);
    }
    /**
     * @param {?} shortcut
     * @param {?} callback
     * @return {?}
     */
    add(shortcut, callback) {
        this.hotkeys.push(new Hotkey(shortcut, callback));
    }
    /**
     * @param {?} shortcut
     * @return {?}
     */
    remove(shortcut) {
        this.hotkeys = this.hotkeys.filter((/**
         * @param {?} x
         * @return {?}
         */
        x => x.shortcut !== shortcut));
    }
    /**
     * @private
     * @param {?} event
     * @return {?}
     */
    checkKeyDown(event) {
        for (let i = 0; i < this.hotkeys.length; i++) {
            /** @type {?} */
            const hotkey = this.hotkeys[i];
            if (this.checkHotKey(event, hotkey) && !this.isTheSameLastHotkeyFired(hotkey)) {
                this.lastHotkeyFired = hotkey;
                return hotkey.callback(event);
            }
        }
        return false;
    }
    /**
     * @private
     * @return {?}
     */
    onKeyUp() {
        this.lastHotkeyFired = null;
        return false;
    }
    /**
     * @private
     * @param {?} event
     * @param {?} hotkey
     * @return {?}
     */
    checkHotKey(event, hotkey) {
        return event.altKey === hotkey.altKey
            && event.ctrlKey === hotkey.ctrlKey
            && event.metaKey === hotkey.metaKey
            && event.shiftKey === hotkey.shiftKey
            && event.key.toLowerCase() === hotkey.key;
    }
    /**
     * @private
     * @param {?} hotkey
     * @return {?}
     */
    isTheSameLastHotkeyFired(hotkey) {
        return hotkey === this.lastHotkeyFired;
    }
}
NgxHotkeyService.decorators = [
    { type: Injectable, args: [{
                providedIn: 'root'
            },] }
];
/** @nocollapse */
NgxHotkeyService.ctorParameters = () => [];
/** @nocollapse */ NgxHotkeyService.ngInjectableDef = defineInjectable({ factory: function NgxHotkeyService_Factory() { return new NgxHotkeyService(); }, token: NgxHotkeyService, providedIn: "root" });

/**
 * @fileoverview added by tsickle
 * Generated from: public-api.ts
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @fileoverview added by tsickle
 * Generated from: ngx-hotkey.ts
 * @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

export { NgxHotkeyService };

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