/*!
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Vlad Martynenko <vladimir.martynenko.work@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
import { NgZone, ElementRef, OnInit, AfterViewInit } from '@angular/core';
import * as CanvasGauges from 'canvas-gauges';
import * as i0 from "@angular/core";
/**
 * Base gauge component for the Gauges rendering
 * T - Type of the Gauge to be rendered (Currently RadialGauge, LinearGauge from the original library)
 * T2 - Type of config options used by the particular gauge (RadialGaugeOptions, LinearGaugeOptions)
 */
export declare abstract class BaseGauge<T extends CanvasGauges.BaseGauge, T2 extends CanvasGauges.GenericOptions> implements OnInit, AfterViewInit {
    private el;
    zone: NgZone;
    /**
     * Canvas element on the template used by the library to draw gauge element
     */
    protected canvas: ElementRef;
    /**
     * A gauge instance responsible for rendering and updates on the canvas.
     * Subclasses should initialize in their ngOnInit implementation.
     */
    protected gauge: T;
    /**
     * Flag indicating that OnViewInit life-cycle has completed
     */
    private isInited;
    /**
     * value property of gauge prior to component view initialization
     */
    private preInitValue;
    /**
     * options property of gauge prior to component view initialization
     */
    private preInitOptions;
    /**
     * Listen for attribute changes, i.e., options properties that are stored
     * as attributes on this ElementRef
     */
    private domListener;
    /**
     *
     * @param el - reference to the element of the whole component, used to scrape options declared on the component itself
     * @param zone - required to redraw gauge outside of Angular, due to animation lags caused by the ovewritten function of the ngZone
     */
    constructor(el: ElementRef, zone: NgZone);
    /**
     * Subclasses should instantiate the CanvasGauge object in the child component
     */
    abstract ngOnInit(): void;
    /**
     * Returns gauges properties as an options object.
     * Option properties consist of the attribute-based properties and those
     * explicitly set.
     * @returns <T2>
     */
    get options(): T2;
    /**
     * Assign gauge options at anytime in the lifecycle.
     * @param newOptions - assign the style and size properties
     */
    set options(newOptions: T2);
    /**
     * Assign the value of the gauge visual indicator such as a needle or pointer
     * @param newValue  the guage new value
     */
    set value(newValue: number);
    /**
     * Update the gauge options. Do not use until after OnViewInit() before using.
     *
     * Special implementation note - options.properties are maintained as
     * attribute name->value on this component's elementRef.  Thus this method
     * maps each newOptions property onto the property's corresponding attribute.
     * The attribute update triggers a DOM mutation event which  "this" listens for.
     * See #listenForDOMEvents()
     *
     * @param newOptions  - the options to update the gauge
     */
    update(newOptions: T2 | {}): void;
    /**
     * Perform gauge initialization.
     * Subclasses that override this method must this super version
     * for proper operation.
     */
    ngAfterViewInit(): void;
    /**
     * Listen for attribute-change events that are created when updating
     * the options of this gauge.
     */
    protected listenForDOMEvents(): void;
    /**
     * Discontinue listening for attribute change events.
     */
    protected stopListeningForDOMEvents(): void;
    /**
     * Initalize the gauge with all options defined by attributes and
     * parent component options.
     */
    protected initGauge(): void;
    /**
     * Performs the gauge update using the current options
     * @param options  The options for the guage
     */
    protected basicUpdate(options: T2): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<BaseGauge<any, any>, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<BaseGauge<any, any>, never, never, { "options": "options"; "value": "value"; }, {}, never, never, false>;
}