devextreme/integration/knockout/event_registrator.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (integration/knockout/event_registrator.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";

function _typeof(obj) {
    "@babel/helpers - typeof";
    if ("function" === typeof Symbol && "symbol" === typeof Symbol.iterator) {
        _typeof = function(obj) {
            return typeof obj
        }
    } else {
        _typeof = function(obj) {
            return obj && "function" === typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj
        }
    }
    return _typeof(obj)
}
var _renderer = require("../../core/renderer");
var _renderer2 = _interopRequireDefault(_renderer);
var _events_engine = require("../../events/core/events_engine");
var _events_engine2 = _interopRequireDefault(_events_engine);
var _knockout = require("knockout");
var _knockout2 = _interopRequireDefault(_knockout);
var _type = require("../../core/utils/type");
var _event_registrator_callbacks = require("../../events/core/event_registrator_callbacks");
var _event_registrator_callbacks2 = _interopRequireDefault(_event_registrator_callbacks);
var _utils = require("../../events/utils");
var eventUtils = _interopRequireWildcard(_utils);

function _getRequireWildcardCache() {
    if ("function" !== typeof WeakMap) {
        return null
    }
    var cache = new WeakMap;
    _getRequireWildcardCache = function() {
        return cache
    };
    return cache
}

function _interopRequireWildcard(obj) {
    if (obj && obj.__esModule) {
        return obj
    }
    if (null === obj || "object" !== _typeof(obj) && "function" !== typeof obj) {
        return {
            "default": obj
        }
    }
    var cache = _getRequireWildcardCache();
    if (cache && cache.has(obj)) {
        return cache.get(obj)
    }
    var newObj = {};
    var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
    for (var key in obj) {
        if (Object.prototype.hasOwnProperty.call(obj, key)) {
            var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
            if (desc && (desc.get || desc.set)) {
                Object.defineProperty(newObj, key, desc)
            } else {
                newObj[key] = obj[key]
            }
        }
    }
    newObj.default = obj;
    if (cache) {
        cache.set(obj, newObj)
    }
    return newObj
}

function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
        "default": obj
    }
}
_event_registrator_callbacks2.default.add(function(name) {
    var koBindingEventName = eventUtils.addNamespace(name, name + "Binding");
    _knockout2.default.bindingHandlers[name] = {
        update: function(element, valueAccessor, allBindingsAccessor, viewModel) {
            var $element = (0, _renderer2.default)(element);
            var unwrappedValue = _knockout2.default.utils.unwrapObservable(valueAccessor());
            var eventSource = unwrappedValue.execute ? unwrappedValue.execute : unwrappedValue;
            _events_engine2.default.off($element, koBindingEventName);
            _events_engine2.default.on($element, koBindingEventName, (0, _type.isPlainObject)(unwrappedValue) ? unwrappedValue : {}, function(e) {
                eventSource.call(viewModel, viewModel, e)
            })
        }
    }
});