devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
49 lines (48 loc) • 1.86 kB
JavaScript
/**
* DevExtreme (core/utils/public_component.js)
* Version: 18.1.3
* Build date: Tue May 15 2018
*
* Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
;
var dataUtils = require("../../core/element_data"),
eventsEngine = require("../../events/core/events_engine"),
WeakMap = require("../polyfills/weak_map"),
isDefined = require("./type").isDefined,
removeEvent = require("../remove_event");
var COMPONENT_NAMES_DATA_KEY = "dxComponents",
ANONYMOUS_COMPONENT_DATA_KEY = "dxPrivateComponent";
var componentNames = new WeakMap,
nextAnonymousComponent = 0;
var getName = exports.name = function(componentClass, newName) {
if (isDefined(newName)) {
componentNames.set(componentClass, newName);
return
}
if (!componentNames.has(componentClass)) {
var generatedName = ANONYMOUS_COMPONENT_DATA_KEY + nextAnonymousComponent++;
componentNames.set(componentClass, generatedName);
return generatedName
}
return componentNames.get(componentClass)
};
exports.attachInstanceToElement = function($element, componentInstance, disposeFn) {
var data = dataUtils.data($element.get(0)),
name = getName(componentInstance.constructor);
data[name] = componentInstance;
if (disposeFn) {
eventsEngine.one($element, removeEvent, function() {
disposeFn.call(componentInstance)
})
}
if (!data[COMPONENT_NAMES_DATA_KEY]) {
data[COMPONENT_NAMES_DATA_KEY] = []
}
data[COMPONENT_NAMES_DATA_KEY].push(name)
};
exports.getInstanceByElement = function($element, componentClass) {
var name = getName(componentClass);
return dataUtils.data($element.get(0), name)
};