easy-elements / includes / Extensions / Preloader / preloader.php

preloader.php in Easy Elements for Elementor – Addons & Website Templates 1.4.8, at includes/Extensions/Preloader/preloader.php

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1	<?php
2	/**
3	* Preloader Extension.
4	*
5	* @package Easyel\EasyElements\Extensions\Preloader
6	*/
7
8	namespace Easyel\EasyElements\Extensions\Preloader;
9
10	if ( ! defined( 'ABSPATH' ) ) {
11	exit;
12	}
13
14	/**
15	* Preloader extension class.
16	*/
17	class EasyelPreloader {
18
19	/**
20	* Singleton instance.
21	*
22	* @var EasyelPreloader\|null
23	*/
24	private static $instance = null;
25
26	/**
27	* Whether preloader HTML has been printed already.
28	*
29	* @var bool
30	*/
31	private $rendered = false;
32
33	/**
34	* Constructor.
35	*/
36	private function __construct() {
37
38	$tab_slug = 'extensions';
39	$extensions_settings = get_option( 'easy_element_' . $tab_slug, array() );
40
41	$enabled = isset( $extensions_settings['enable_preloader'] ) ? (int) $extensions_settings['enable_preloader'] : 0;
42
43	if ( 1 !== $enabled ) {
44	return;
45	}
46
47	if ( is_admin() ) {
48	return;
49	}
50
51	add_action( 'wp_body_open', array( $this, 'render_preloader_html' ), 1 );
52	add_action( 'wp_footer', array( $this, 'render_preloader_html_fallback' ), 1 );
53	add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
54	}
55
56	/**
57	* Get singleton instance.
58	*
59	* @return EasyelPreloader
60	*/
61	public static function get_instance() {
62	if ( null === self::$instance ) {
63	self::$instance = new self();
64	}
65	return self::$instance;
66	}
67
68	/**
69	* Get sanitized settings merged with defaults.
70	*
71	* @return array
72	*/
73	private function get_settings() {
74
75	$defaults = array(
76	'preloader_style' => 'circle',
77	'preloader_bg_color' => '#ffffff',
78	'preloader_color' => '#5933ff',
79	'preloader_secondary_color' => '#e0e0e0',
80	'preloader_size' => 60,
81	'preloader_speed' => 1.0,
82	'preloader_min_time' => 500,
83	'preloader_fadeout_time' => 600,
84	'preloader_logo' => '',
85	'preloader_logo_width' => 36,
86	'preloader_logo_height' => 36,
87	'preloader_disable_mobile' => 0,
88	);
89
90	$saved = get_option( 'easyel_preloader_settings', array() );
91
92	if ( ! is_array( $saved ) ) {
93	$saved = array();
94	}
95
96	return wp_parse_args( $saved, $defaults );
97	}
98
99	/**
100	* Enqueue CSS/JS and inline dynamic styles.
101	*/
102	public function enqueue_scripts() {
103
104	$settings = $this->get_settings();
105
106	if ( ! empty( $settings['preloader_disable_mobile'] ) && wp_is_mobile() ) {
107	return;
108	}
109
110	wp_enqueue_style(
111	'easyel-preloader',
112	EASYELEMENTS_DIR_URL . 'includes/Extensions/Preloader/assets/css/preloader.css',
113	array(),
114	EASYELEMENTS_VER
115	);
116
117	$bg = sanitize_hex_color( $settings['preloader_bg_color'] );
118	if ( ! $bg ) {
119	$bg = '#ffffff';
120	}
121
122	$color = sanitize_hex_color( $settings['preloader_color'] );
123	if ( ! $color ) {
124	$color = '#5933ff';
125	}
126
127	$sec_color = sanitize_hex_color( $settings['preloader_secondary_color'] );
128	if ( ! $sec_color ) {
129	$sec_color = '#e0e0e0';
130	}
131
132	$size = absint( $settings['preloader_size'] );
133	$size = $size > 0 ? $size : 60;
134
135	$speed = (float) $settings['preloader_speed'];
136	$speed = $speed > 0 ? $speed : 1.0;
137
138	$fadeout = absint( $settings['preloader_fadeout_time'] );
139
140	$custom_css = '.easyel-preloader{';
141	$custom_css .= '--easyel-preloader-bg:' . $bg . ';';
142	$custom_css .= '--easyel-preloader-color:' . $color . ';';
143	$custom_css .= '--easyel-preloader-secondary:' . $sec_color . ';';
144	$custom_css .= '--easyel-preloader-size:' . $size . 'px;';
145	$custom_css .= '--easyel-preloader-speed:' . $speed . 's;';
146	$custom_css .= '--easyel-preloader-fadeout:' . $fadeout . 'ms;';
147	$custom_css .= '}';
148
149	wp_add_inline_style( 'easyel-preloader', $custom_css );
150
151	wp_enqueue_script(
152	'easyel-preloader',
153	EASYELEMENTS_DIR_URL . 'includes/Extensions/Preloader/assets/js/preloader.js',
154	array( 'jquery' ),
155	EASYELEMENTS_VER,
156	true
157	);
158
159	wp_localize_script(
160	'easyel-preloader',
161	'easyelPreloaderData',
162	array(
163	'minTime' => absint( $settings['preloader_min_time'] ),
164	'fadeoutTime' => $fadeout,
165	)
166	);
167	}
168
169	/**
170	* Render preloader HTML markup.
171	*/
172	public function render_preloader_html() {
173
174	if ( $this->rendered ) {
175	return;
176	}
177
178	$settings = $this->get_settings();
179
180	if ( ! empty( $settings['preloader_disable_mobile'] ) && wp_is_mobile() ) {
181	$this->rendered = true;
182	return;
183	}
184
185	$allowed_styles = array( 'circle', 'dotted_circle', 'dots', 'bars', 'pulse', 'custom_logo' );
186	$style = isset( $settings['preloader_style'] ) ? sanitize_key( $settings['preloader_style'] ) : 'circle';
187
188	if ( ! in_array( $style, $allowed_styles, true ) ) {
189	$style = 'circle';
190	}
191
192	$logo = isset( $settings['preloader_logo'] ) ? esc_url( $settings['preloader_logo'] ) : '';
193
194	$inner = '';
195
196	$inner .= '<div class="easyel-preloader-spinner">';
197
198	switch ( $style ) {
199	case 'dots':
200	$inner .= '<span class="easyel-preloader-dot"></span>';
201	$inner .= '<span class="easyel-preloader-dot"></span>';
202	$inner .= '<span class="easyel-preloader-dot"></span>';
203	break;
204
205	case 'bars':
206	$inner .= '<span class="easyel-preloader-bar"></span>';
207	$inner .= '<span class="easyel-preloader-bar"></span>';
208	$inner .= '<span class="easyel-preloader-bar"></span>';
209	$inner .= '<span class="easyel-preloader-bar"></span>';
210	break;
211
212	case 'pulse':
213	$inner .= '<span class="easyel-preloader-pulse"></span>';
214	break;
215
216	case 'dotted_circle':
217	$inner .= '<span class="easyel-preloader-dotted-circle">';
218	$inner .= '<div></div><div></div><div></div><div></div>';
219	$inner .= '<div></div><div></div><div></div><div></div>';
220	$inner .= '</span>';
221	break;
222
223	case 'custom_logo':
224	$inner .= '<span class="easyel-preloader-logo-ring"></span>';
225	if ( ! empty( $logo ) ) {
226	$logo_w = absint( $settings['preloader_logo_width'] );
227	$logo_w = $logo_w > 0 ? $logo_w : 36;
228	$logo_h = absint( $settings['preloader_logo_height'] );
229	$logo_h = $logo_h > 0 ? $logo_h : 36;
230	$inner .= '<img class="easyel-preloader-logo-img" src="' . $logo . '" alt=""'
231	. ' style="width:' . $logo_w . 'px;height:' . $logo_h . 'px;">';
232	}
233	break;
234
235	case 'circle':
236	default:
237	$inner .= '<span class="easyel-preloader-circle"></span>';
238	break;
239	}
240
241	$inner .= '</div>';
242
243	$html = '<div class="easyel-preloader easyel-preloader-style-' . esc_attr( $style ) . '" aria-hidden="true">';
244	$html .= $inner;
245	$html .= '</div>';
246
247	// Markup is built from sanitized values via esc_attr/esc_url; pass through wp_kses for defense in depth.
248	echo wp_kses( $html, easyel_allowed_html() );
249
250	$this->rendered = true;
251	}
252
253	/**
254	* Fallback rendering for themes that do not implement wp_body_open().
255	*/
256	public function render_preloader_html_fallback() {
257
258	if ( $this->rendered ) {
259	return;
260	}
261
262	$this->render_preloader_html();
263	}
264	}
265