footnotes/class/init.php

<?php
/**
 * Includes the main Class of the Plugin.
 *
 * @filesource
 * @author Stefan Herndler
 * @since 1.5.0 12.09.14 10:56
 */

//  Versioning: update plugin version # for style sheet cache busting on line 103
 
//  Added jQueryUI on 2020-10-26T1907+0100
//  Following @vonpiernik <https://wordpress.org/support/topic/tooltip-hover-not-showing/#post-13456762>

/**
 * Entry point of the Plugin. Loads the Dashboard and executes the Task.
 *
 * @author Stefan Herndler
 * @since 1.5.0
 */
class MCI_Footnotes {

	/**
	 * Reference to the Plugin Task object.
	 *
	 * @author Stefan Herndler
	 * @since 1.5.0
	 * @var null|MCI_Footnotes_Task
	 */
	public $a_obj_Task = null;

	/**
	 * Executes the Plugin.
	 *
	 * @author Stefan Herndler
	 * @since 1.5.0
	 */
	public function run() {
	        // register language
		MCI_Footnotes_Language::registerHooks();
		// register Button hooks
		MCI_Footnotes_WYSIWYG::registerHooks();
		// register general hooks
		MCI_Footnotes_Hooks::registerHooks();
		
		// initialize the Plugin Dashboard
		$this->initializeDashboard();
		// initialize the Plugin Task
		$this->initializeTask();
		
		// Register all Public Stylesheets and Scripts
		add_action('init', array($this, 'registerPublic'));
		// Enqueue all Public Stylesheets and Scripts
		add_action('wp_enqueue_scripts', array($this, 'registerPublic'));
		// Register all Widgets of the Plugin.
		add_action('widgets_init', array($this, 'initializeWidgets'));
	}

	/**
	 * Initializes all Widgets of the Plugin.
	 *
	 * @author Stefan Herndler
	 * @since 1.5.0
	 */
	public function initializeWidgets() {
	  register_widget("MCI_Footnotes_Widget_ReferenceContainer");
	}

	/**
	 * Initializes the Dashboard of the Plugin and loads them.
	 *
	 * @author Stefan Herndler
	 * @since 1.5.0
	 */
	private function initializeDashboard() {
		new MCI_Footnotes_Layout_Init();
	}

	/**
	 * Initializes the Plugin Task and registers the Task hooks.
	 *
	 * @author Stefan Herndler
	 * @since 1.5.0
	 */
	private function initializeTask() {
		$this->a_obj_Task = new MCI_Footnotes_Task();
		$this->a_obj_Task->registerHooks();
	}

	/**
	 * Registers and enqueue scripts and stylesheets to the public pages.
	 *
	 * @author Stefan Herndler
	 * @since 1.5.0
	 */
	public function registerPublic() {
		
		// Add jQueryUI following @vonpiernik <https://wordpress.org/support/topic/tooltip-hover-not-showing/#post-13456762>:
		wp_register_script( 'jQueryUI', 'https://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js', null, null, true );
		wp_enqueue_script( 'jQueryUI' );
		
		// IMPORTANT: current version number for cache busting:
		wp_enqueue_style('mci-footnotes-css-public', plugins_url('../css/public.css', __FILE__), '', '2.0.3');
		// add the jQuery plugin (already registered by WordPress)
		wp_enqueue_script('jquery');
		
		// Finish adding jQueryUI:
		wp_enqueue_script('mci-footnotes-js-jquery-tools', plugins_url('../js/jquery.tools.min.js', __FILE__), ['jQueryUI']);
	}
}