devextreme/renovation/ui/scroll_view/utils/get_allowed_direction.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (renovation/ui/scroll_view/utils/get_allowed_direction.js)
 * Version: 21.2.4
 * Build date: Mon Dec 06 2021
 *
 * Copyright (c) 2012 - 2021 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
exports.allowedDirection = allowedDirection;
var _consts = require("../common/consts");
var _scroll_direction = require("./scroll_direction");

function allowedDirection(direction, scrollTopMax, scrollLeftMax, bounceEnabled) {
    var _ScrollDirection = new _scroll_direction.ScrollDirection(direction),
        isBoth = _ScrollDirection.isBoth,
        isHorizontal = _ScrollDirection.isHorizontal,
        isVertical = _ScrollDirection.isVertical;
    var vDirectionAllowed = isVertical && (scrollTopMax > 0 || bounceEnabled);
    var hDirectionAllowed = isHorizontal && (scrollLeftMax > 0 || bounceEnabled);
    if (isBoth && vDirectionAllowed && hDirectionAllowed) {
        return _consts.DIRECTION_BOTH
    }
    if (isHorizontal && hDirectionAllowed) {
        return _consts.DIRECTION_HORIZONTAL
    }
    if (isVertical && vDirectionAllowed) {
        return _consts.DIRECTION_VERTICAL
    }
    return
}