devextreme/integration/knockout/clean_node.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (integration/knockout/clean_node.js)
 * Version: 20.1.7
 * Build date: Tue Aug 25 2020
 *
 * Copyright (c) 2012 - 2020 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
var elementData = require("../../core/element_data");
var afterCleanData = elementData.afterCleanData;
var strategyChanging = elementData.strategyChanging;
var ko = require("knockout");
var compareVersion = require("../../core/utils/version").compare;
var originalKOCleanExternalData = ko.utils.domNodeDisposal.cleanExternalData;
var patchCleanData = function() {
    afterCleanData(function(nodes) {
        var i;
        for (i = 0; i < nodes.length; i++) {
            nodes[i].cleanedByJquery = true
        }
        for (i = 0; i < nodes.length; i++) {
            if (!nodes[i].cleanedByKo) {
                ko.cleanNode(nodes[i])
            }
            delete nodes[i].cleanedByKo
        }
        for (i = 0; i < nodes.length; i++) {
            delete nodes[i].cleanedByJquery
        }
    });
    ko.utils.domNodeDisposal.cleanExternalData = function(node) {
        node.cleanedByKo = true;
        if (!node.cleanedByJquery) {
            elementData.cleanData([node])
        }
    }
};
var restoreOriginCleanData = function() {
    afterCleanData(function() {});
    ko.utils.domNodeDisposal.cleanExternalData = originalKOCleanExternalData
};
patchCleanData();
strategyChanging.add(function(strategy) {
    var isJQuery = !!strategy.fn;
    if (isJQuery && compareVersion(strategy.fn.jquery, [2, 0]) < 0) {
        restoreOriginCleanData()
    }
});