scroll-down-arrow / scroll-down-arrow.php

scroll-down-arrow.php in Scroll Down Arrow 1.2.0, at scroll-down-arrow.php

173 lines 5.0 KB

Raw Download Zip

1	<?php
2	/**
3	* Plugin Name: Scroll Down Arrow
4	* Plugin URI: https://www.echoknowledgebase.com/documentation/how-to-use-scroll-down-arrow/
5	* Description: Give users a visual clue that there is more content further down the page.
6	* Version: 1.2.0
7	* Author: Echo Plugins
8	* Author URI: https://www.echoknowledgebase.com
9	* Text Domain: scroll-down-arrow
10	* Domain Path: /languages
11	* License: GPLv2 or later
12	* License URI: http://www.gnu.org/licenses/gpl-2.0.html
13	*
14	* Scroll Down Arrow is distributed under the terms of the GNU General Public License as published by
15	* the Free Software Foundation, either version 2 of the License, or
16	* any later version.
17	*
18	* Scroll Down Arrow is distributed in the hope that it will be useful,
19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21	* GNU General Public License for more details.
22	*
23	* You should have received a copy of the GNU General Public License
24	* along with Down Arrow. If not, see <http://www.gnu.org/licenses/>.
25	*
26	*/
27
28	if ( ! defined( 'ABSPATH' ) ) exit;
29
30	if ( ! defined( 'EPDA_PLUGIN_NAME' ) ) {
31	define( 'EPDA_PLUGIN_NAME', 'Scroll Down Arrow' );
32	}
33
34	/**
35	* Main class to load the plugin.
36	*
37	* Singleton
38	*/
39	final class EPDA_Scroll_Down_Arrow {
40
41	/* @var EPDA_Scroll_Down_Arrow */
42	private static $instance;
43
44	public static $version = '1.2.0';
45	public static $plugin_dir;
46	public static $plugin_url;
47	public static $plugin_file = __FILE__;
48
49	/* @var EPDA_Config_DB */
50	public $da_config_obj;
51
52	/**
53	* Initialise the plugin
54	*/
55	private function __construct() {
56	self::$plugin_dir = plugin_dir_path( __FILE__ );
57	self::$plugin_url = plugin_dir_url( __FILE__ );
58	}
59
60	/**
61	* Retrieve or create a new instance of this main class (avoid global vars)
62	*
63	* @static
64	* @return EPDA_Scroll_Down_Arrow
65	*/
66	public static function instance() {
67
68	if ( ! empty( self::$instance ) && ( self::$instance instanceof EPDA_Scroll_Down_Arrow ) ) {
69	return self::$instance;
70	}
71
72	self::$instance = new EPDA_Scroll_Down_Arrow();
73	self::$instance->setup_system();
74	self::$instance->setup_plugin();
75
76	add_action( 'plugins_loaded', array( self::$instance, 'load_text_domain' ), 11 );
77	}
78
79	/**
80	* Setup class autoloading and other support functions. Setup custom core features.
81	*/
82	private function setup_system() {
83
84	// autoload classes ONLY when needed by executed code rather than on every page request
85	require_once self::$plugin_dir . 'includes/system/class-epda-autoloader.php';
86
87	// register settings
88	self::$instance->da_config_obj = new EPDA_Config_DB();
89
90	// load non-classes
91	require_once self::$plugin_dir . 'includes/system/plugin-setup.php';
92	require_once self::$plugin_dir . 'includes/system/scripts-registration.php';
93	require_once self::$plugin_dir . 'includes/system/plugin-links.php';
94	}
95
96	/**
97	* Setup plugin before it runs. Include functions and instantiate classes based on user action
98	*/
99	private function setup_plugin() {
100
101	if ( defined( 'DOING_AJAX' ) && DOING_AJAX ) {
102	new EPDA_Config_Ctrl();
103	return;
104	}
105
106	// ADMIN or CLI
107	if ( is_admin() \|\| ( defined( 'WP_CLI' ) && WP_CLI ) ) {
108	$this->setup_backend_classes();
109	return;
110	}
111
112	// FRONT-END with admin-bar
113
114	// FRONT-END (no ajax, possibly admin bar)
115
116	new EPDA_Arrow_View();
117	}
118
119	/**
120	* Setup up classes when on ADMIN pages
121	*/
122	private function setup_backend_classes() {
123
124	// phpcs:disable WordPress.Security.NonceVerification.Recommended -- Verified elsewhere.
125	$request_page = empty( $_REQUEST['page'] ) ? '' : sanitize_key( $_REQUEST['page'] );
126
127	// admin core classes
128	require_once self::$plugin_dir . 'includes/admin/admin-menu.php';
129	require_once self::$plugin_dir . 'includes/admin/admin-functions.php';
130
131	// Down Arrow request
132	if ( in_array( $request_page, ['epda-down-arrow', 'epda-down-arrow-config'] ) ) {
133
134	add_action( 'admin_enqueue_scripts', 'epda_load_admin_plugin_pages_resources' );
135
136	switch ( $request_page ) {
137	// Configuration page
138	case 'epda-down-arrow-config':
139	add_action( 'admin_enqueue_scripts', 'epda_load_admin_config_script' );
140	break;
141
142	default: break;
143	}
144	}
145	}
146
147	/**
148	/**
149	* Loads the plugin language files from ./languages directory.
150	*/
151	public function load_text_domain() {
152	load_plugin_textdomain( 'scroll-down-arrow', false, dirname( plugin_basename( __FILE__ ) ) . '/languages' );
153	}
154
155	// Don't allow this singleton to be cloned.
156	public function __clone() {
157	_doing_it_wrong( __FUNCTION__, 'Invalid (#1)', '4.0' );
158	}
159
160	// Don't allow un-serializing of the class except when testing
161	public function __wakeup() {
162	_doing_it_wrong( __FUNCTION__, 'Invalid (#1)', '4.0' );
163	}
164	}
165
166	/**
167	* Returns the single instance of this class
168	* @return EPDA_Scroll_Down_Arrow - this class instance
169	*/
170	function epda_get_instance() {
171	return EPDA_Scroll_Down_Arrow::instance();
172	}
173	epda_get_instance();