@coreui/coreui-pro/js/dist/loading-button.js

The most popular front-end framework for developing responsive, mobile-first projects on the web rewritten by the CoreUI Team

/*!
  * CoreUI loading-button.js v5.23.0 (https://coreui.io)
  * Copyright 2025 The CoreUI Team (https://github.com/orgs/coreui/people)
  * Licensed under MIT (https://github.com/coreui/coreui/blob/main/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./base-component.js'), require('./dom/data.js'), require('./dom/event-handler.js'), require('./util/index.js')) :
  typeof define === 'function' && define.amd ? define(['./base-component', './dom/data', './dom/event-handler', './util/index'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.LoadingButton = factory(global.BaseComponent, global.Data, global.EventHandler, global.Index));
})(this, (function (BaseComponent, Data, EventHandler, index_js) { 'use strict';

  /**
   * --------------------------------------------------------------------------
   * CoreUI PRO loading-button.js
   * License (https://coreui.io/pro/license/)
   * --------------------------------------------------------------------------
   */


  /**
   * Constants
   */

  const NAME = 'loading-button';
  const DATA_KEY = 'coreui.loading-button';
  const EVENT_KEY = `.${DATA_KEY}`;
  const DATA_API_KEY = '.data-api';
  const EVENT_START = `start${EVENT_KEY}`;
  const EVENT_STOP = `stop${EVENT_KEY}`;
  const EVENT_CLICK_DATA_API = `click${EVENT_KEY}${DATA_API_KEY}`;
  const CLASS_NAME_IS_LOADING = 'is-loading';
  const CLASS_NAME_LOADING_BUTTON = 'btn-loading';
  const CLASS_NAME_LOADING_BUTTON_SPINNER = 'btn-loading-spinner';
  const SELECTOR_DATA_TOGGLE = '[data-coreui-toggle="loading-button"]';
  const Default = {
    disabledOnLoading: false,
    spinner: true,
    spinnerType: 'border',
    timeout: false
  };
  const DefaultType = {
    disabledOnLoading: 'boolean',
    spinner: 'boolean',
    spinnerType: 'string',
    timeout: '(boolean|number)'
  };

  /**
   * Class definition
   */

  class LoadingButton extends BaseComponent {
    constructor(element, config) {
      super(element);
      this._config = this._getConfig(config);
      this._timeout = this._config.timeout;
      this._spinner = null;
      this._state = 'idle';
      if (this._element) {
        Data.set(element, DATA_KEY, this);
      }
      this._createButton();
    }

    // Getters

    static get Default() {
      return Default;
    }
    static get DefaultType() {
      return DefaultType;
    }
    static get NAME() {
      return NAME;
    }

    // Public

    start() {
      if (this._state !== 'loading') {
        this._createSpinner();
        this._state = 'loading';
        setTimeout(() => {
          this._element.classList.add(CLASS_NAME_IS_LOADING);
          EventHandler.trigger(this._element, EVENT_START);
          if (this._config.disabledOnLoading) {
            this._element.setAttribute('disabled', true);
          }
        }, 1);
        if (this._config.timeout) {
          setTimeout(() => {
            this.stop();
          }, this._config.timeout);
        }
      }
    }
    stop() {
      this._element.classList.remove(CLASS_NAME_IS_LOADING);
      const stoped = () => {
        this._removeSpinner();
        this._state = 'idle';
        if (this._config.disabledOnLoading) {
          this._element.removeAttribute('disabled');
        }
        EventHandler.trigger(this._element, EVENT_STOP);
      };
      if (this._spinner) {
        this._queueCallback(stoped, this._spinner, true);
        return;
      }
      stoped();
    }
    _createButton() {
      this._element.classList.add(CLASS_NAME_LOADING_BUTTON);
    }
    _createSpinner() {
      if (this._config.spinner) {
        const spinner = document.createElement('span');
        const type = this._config.spinnerType;
        spinner.classList.add(CLASS_NAME_LOADING_BUTTON_SPINNER, `spinner-${type}`, `spinner-${type}-sm`);
        spinner.setAttribute('role', 'status');
        spinner.setAttribute('aria-hidden', 'true');
        this._element.insertBefore(spinner, this._element.firstChild);
        this._spinner = spinner;
      }
    }
    _removeSpinner() {
      if (this._config.spinner) {
        this._spinner.remove();
        this._spinner = null;
      }
    }

    // Static

    static loadingButtonInterface(element, config) {
      const data = LoadingButton.getOrCreateInstance(element, config);
      if (typeof config === 'string') {
        if (typeof data[config] === 'undefined') {
          throw new TypeError(`No method named "${config}"`);
        }
        data[config]();
      }
    }
    static jQueryInterface(config) {
      return this.each(function () {
        LoadingButton.loadingButtonInterface(this, config);
      });
    }
  }

  /**
   * Data API implementation
   */

  EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, event => {
    event.preventDefault();
    const button = event.target.closest(SELECTOR_DATA_TOGGLE);
    const data = LoadingButton.getOrCreateInstance(button);
    data.start();
  });

  /**
   * jQuery
   */

  index_js.defineJQueryPlugin(LoadingButton);

  return LoadingButton;

}));
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