devextreme/dist/transpiled/ui/scheduler/ui.loading.js

HTML5 JavaScript Component Suite for Responsive Web Development

"use strict";

var $ = require("../../core/renderer"),
    viewPortUtils = require("../../core/utils/view_port"),
    LoadPanel = require("../load_panel"),
    Deferred = require("../../core/utils/deferred").Deferred;

var loading = null;

var createLoadPanel = function createLoadPanel(options) {
    return new LoadPanel($("<div>").appendTo(options && options.container || viewPortUtils.value()), options);
};

var removeLoadPanel = function removeLoadPanel() {
    if (!loading) {
        return;
    }
    loading.$element().remove();
    loading = null;
};

exports.show = function (options) {
    removeLoadPanel();
    loading = createLoadPanel(options);
    return loading.show();
};

exports.hide = function () {
    // todo: hot fix for case without viewport

    if (!loading) {
        return new Deferred().resolve();
    }
    return loading.hide().done(removeLoadPanel).promise();
};