devextreme/cjs/__internal/ui/scroll_view/m_animator.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (cjs/__internal/ui/scroll_view/m_animator.js)
 * Version: 24.2.6
 * Build date: Mon Mar 17 2025
 *
 * Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
exports.default = void 0;
var _frame = require("../../../common/core/animation/frame");
var _class = _interopRequireDefault(require("../../../core/class"));

function _interopRequireDefault(e) {
    return e && e.__esModule ? e : {
        default: e
    }
}
class Animator extends(_class.default.inherit({})) {
    ctor(strategy) {
        this._finished = true;
        this._stopped = false;
        this._proxiedStepCore = this._stepCore.bind(this)
    }
    start() {
        this._stopped = false;
        this._finished = false;
        this._stepCore()
    }
    stop() {
        this._stopped = true;
        (0, _frame.cancelAnimationFrame)(this._stepAnimationFrame)
    }
    _stepCore() {
        if (this._isStopped()) {
            this._stop();
            return
        }
        if (this._isFinished()) {
            this._finished = true;
            this._complete();
            return
        }
        this._step();
        this._stepAnimationFrame = (0, _frame.requestAnimationFrame)(this._proxiedStepCore)
    }
    _step() {
        _class.default.abstract()
    }
    _isFinished() {}
    _stop() {}
    _complete() {}
    _isStopped() {
        return this._stopped
    }
    inProgress() {
        return !(this._stopped || this._finished)
    }
}
var _default = exports.default = Animator;