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Autoptimize / 3.0.3
Autoptimize v3.0.3
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← All changes | classes/autoptimizeCriticalCSSSettings.php +374 -40 2.6.23.0.3 View file →
@@ -1,7 +1,7 @@
1 1 <?php
2 2 /**
3 - * Temporary options page for AO26, will integrate CCSS functionality in next release.
3 + * Critical CSS Options page.
4 4 */
5 5
6 6 if ( ! defined( 'ABSPATH' ) ) {
7 7 exit;
@@ -14,10 +14,10 @@
14 14 * @var bool
15 15 */
16 16 private $settings_screen_do_remote_http = true;
17 17
18 - public function __construct()
19 - {
18 + public function __construct() {
19 + $this->criticalcss = autoptimize()->criticalcss();
20 20 $this->settings_screen_do_remote_http = apply_filters( 'autoptimize_settingsscreen_remotehttp', $this->settings_screen_do_remote_http );
21 21 $this->run();
22 22 }
23 23
@@ -22,9 +22,9 @@
22 22 }
23 23
24 24 protected function enabled()
25 25 {
26 - return apply_filters( 'autoptimize_filter_show_criticalcsss_tabs', true );
26 + return apply_filters( 'autoptimize_filter_show_criticalcss_tabs', true );
27 27 }
28 28
29 29 public function run()
30 30 {
@@ -29,14 +29,17 @@
29 29 public function run()
30 30 {
31 31 if ( $this->enabled() ) {
32 32 add_filter( 'autoptimize_filter_settingsscreen_tabs', array( $this, 'add_critcss_tabs' ), 10, 1 );
33 - }
33 + add_action( 'admin_enqueue_scripts', array( $this, 'admin_assets' ) );
34 34
35 - if ( is_multisite() && is_network_admin() && autoptimizeOptionWrapper::is_ao_active_for_network() ) {
36 - add_action( 'network_admin_menu', array( $this, 'add_critcss_admin_menu' ) );
37 - } else {
38 - add_action( 'admin_menu', array( $this, 'add_critcss_admin_menu' ) );
35 + if ( $this->is_multisite_network_admin() && autoptimizeOptionWrapper::is_ao_active_for_network() ) {
36 + add_action( 'network_admin_menu', array( $this, 'add_critcss_admin_menu' ) );
37 + } else {
38 + add_action( 'admin_menu', array( $this, 'add_critcss_admin_menu' ) );
39 + }
40 +
41 + $criticalcss_ajax = new autoptimizeCriticalCSSSettingsAjax();
39 42 }
40 43 }
41 44
42 45 public function add_critcss_tabs( $in )
@@ -47,51 +50,382 @@
47 50 }
48 51
49 52 public function add_critcss_admin_menu()
50 53 {
51 - if ( $this->enabled() ) {
52 - add_submenu_page( null, 'Critical CSS', 'Critical CSS', 'manage_options', 'ao_critcss', array( $this, 'ao_criticalcsssettings_page' ) );
54 + // Register settings.
55 + register_setting( 'ao_ccss_options_group', 'autoptimize_css_defer_inline' );
56 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_rules' );
57 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_additional' );
58 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_queue' );
59 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_viewport' );
60 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_finclude' );
61 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_rtimelimit' );
62 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_noptimize' );
63 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_debug' );
64 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_key' );
65 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_keyst' );
66 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_loggedin' );
67 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_forcepath' );
68 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_deferjquery' );
69 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_domain' );
70 + register_setting( 'ao_ccss_options_group', 'autoptimize_ccss_unloadccss' );
71 +
72 + // And add submenu-page.
73 + add_submenu_page( null, 'Critical CSS', 'Critical CSS', 'manage_options', 'ao_critcss', array( $this, 'ao_criticalcsssettings_page' ) );
74 + }
75 +
76 + public function admin_assets( $hook ) {
77 + // Return if plugin is not hooked.
78 + if ( 'settings_page_ao_critcss' != $hook && 'admin_page_ao_critcss' != $hook ) {
79 + return;
53 80 }
81 +
82 + // Stylesheets to add.
83 + wp_enqueue_style( 'wp-jquery-ui-dialog' );
84 + wp_enqueue_style( 'ao-tablesorter', plugins_url( 'critcss-inc/css/ao-tablesorter/style.css', __FILE__ ) );
85 + wp_enqueue_style( 'ao-ccss-admin-css', plugins_url( 'critcss-inc/css/admin_styles.css', __FILE__ ) );
86 +
87 + // Scripts to add.
88 + wp_enqueue_script( 'jquery-ui-dialog', array( 'jquery' ) );
89 + wp_enqueue_script( 'md5', plugins_url( 'critcss-inc/js/md5.min.js', __FILE__ ), null, null, true );
90 + wp_enqueue_script( 'tablesorter', plugins_url( 'critcss-inc/js/jquery.tablesorter.min.js', __FILE__ ), array( 'jquery' ), null, true );
91 + wp_enqueue_script( 'ao-ccss-admin-license', plugins_url( 'critcss-inc/js/admin_settings.js', __FILE__ ), array( 'jquery' ), null, true );
54 92 }
55 93
56 94 public function ao_criticalcsssettings_page()
57 95 {
58 - ?>
59 - <style>
60 - .ao_settings_div {background: white;border: 1px solid #ccc;padding: 1px 15px;margin: 15px 10px 10px 0;}
61 - .ao_settings_div .form-table th {font-weight: normal;}
62 - </style>
63 - <script>document.title = "Autoptimize: <?php _e( 'Critical CSS', 'autoptimize' ); ?> " + document.title;</script>
64 - <div class="wrap">
65 - <h1><?php _e( 'Autoptimize Settings', 'autoptimize' ); ?></h1>
66 - <?php echo autoptimizeConfig::ao_admin_tabs(); ?>
67 - <div class="ao_settings_div">
96 + // these are not OO yet, simply require for now.
97 + require_once( 'critcss-inc/admin_settings_rules.php' );
98 + require_once( 'critcss-inc/admin_settings_queue.php' );
99 + require_once( 'critcss-inc/admin_settings_key.php' );
100 + require_once( 'critcss-inc/admin_settings_adv.php' );
101 + require_once( 'critcss-inc/admin_settings_explain.php' );
102 +
103 + $ao_ccss_key = $this->criticalcss->get_option( 'key' );
104 + $ao_ccss_keyst = $this->criticalcss->get_option( 'keyst' );
105 + $ao_css_defer = $this->criticalcss->get_option( 'css_defer' );
106 + $ao_ccss_deferjquery = $this->criticalcss->get_option( 'deferjquery' );
107 + $ao_ccss_queue = $this->criticalcss->get_option( 'queue' );
108 + $ao_ccss_rules = $this->criticalcss->get_option( 'rules' );
109 + $ao_ccss_servicestatus = $this->criticalcss->get_option( 'servicestatus' );
110 + $ao_ccss_finclude = $this->criticalcss->get_option( 'finclude' );
111 + $ao_ccss_rtimelimit = $this->criticalcss->get_option( 'rtimelimit' );
112 + $ao_ccss_debug = $this->criticalcss->get_option( 'debug' );
113 + $ao_ccss_noptimize = $this->criticalcss->get_option( 'noptimize' );
114 + $ao_css_defer_inline = $this->criticalcss->get_option( 'css_defer_inline' );
115 + $ao_ccss_loggedin = $this->criticalcss->get_option( 'loggedin' );
116 + $ao_ccss_forcepath = $this->criticalcss->get_option( 'forcepath' );
117 + ?>
118 + <script>document.title = "Autoptimize: <?php _e( 'Critical CSS', 'autoptimize' ); ?> " + document.title;</script>
119 + <div class="wrap">
120 + <div id="autoptimize_main">
121 + <div id="ao_title_and_button">
122 + <h1><?php apply_filters( 'autoptimize_filter_settings_is_pro', false ) ? _e( 'Autoptimize Pro Settings', 'autoptimize' ) : _e( 'Autoptimize Settings', 'autoptimize' ); ?></h1>
123 + </div>
124 +
125 + <?php
126 + // Print AO settings tabs.
127 + echo autoptimizeConfig::ao_admin_tabs();
128 +
129 + $mkdirresult = $this->criticalcss->create_ao_ccss_dir();
130 +
131 + // Warn if we could not create those files.
132 + if ( ( true !== $mkdirresult ) ) {
133 + ?>
134 + <div class="notice-error notice"><p>
135 + <?php
136 + _e( 'Could not create the required directory. Make sure the webserver can write to the wp-content/uploads directory.', 'autoptimize' );
137 + ?>
138 + </p></div>
139 + <?php
140 + }
141 +
142 + // Check if CSS optimization is on.
143 + if ( 'on' !== autoptimizeOptionWrapper::get_option( 'autoptimize_css' ) || 'on' !== autoptimizeOptionWrapper::get_option( 'autoptimize_css_defer' ) ) {
144 + ?>
145 + <div class="notice-info notice"><p>
146 + <?php
147 + _e( 'To be able to use Critical CSS you will have to enable CSS optimization and make sure "eliminate render-blocking CSS" is active on the main Autoptimize settings page.', 'autoptimize' );
148 + ?>
149 + </p></div>
150 + <?php
151 + }
152 +
153 + // Check for "inline & defer CSS" being active in Autoptimize.
154 + if ( ! empty( $ao_ccss_key ) && ! $ao_css_defer ) {
155 + if ( empty( $ao_ccss_keyst ) ) {
156 + // no keystate so likely in activation-process of CCSS, let's enable "inline & defer CSS" immediately to make things easier!
157 + autoptimizeOptionWrapper::update_option( 'autoptimize_css_defer', 'on' );
158 + ?>
159 + <div class="notice-info notice"><p>
160 + <?php
161 + _e( "The \"Eliminate render-blocking CSS\" option was activated to allow critical CSS to be used.", 'autoptimize' );
162 + ?>
163 + </p></div>
164 + <?php
165 + } else {
166 + // we have keystate, so "inline & defer CSS" was probably disabled for troubleshooting, warn but let users continue.
167 + ?>
168 + <div class="notice-warning notice"><p>
169 + <?php
170 + _e( "Please <strong>activate the \"Eliminate render-blocking CSS\" option</strong> on Autoptimize's main settings page to ensure critical CSS is used on the front-end.", 'autoptimize' );
171 + ?>
172 + </p></div>
173 + <?php
174 + }
175 + }
176 +
177 + // check if WordPress cron is disabled and warn if so.
178 + if ( ! empty( $ao_ccss_key ) && defined( 'DISABLE_WP_CRON' ) && DISABLE_WP_CRON && PAnD::is_admin_notice_active( 'i-know-about-disable-cron-forever' ) ) {
179 + ?>
180 + <div data-dismissible="i-know-about-disable-cron-forever" class="notice-warning notice is-dismissible"><p>
181 + <?php
182 + _e( 'WordPress cron (for task scheduling) seems to be disabled. Have a look at <a href="https://wordpress.org/plugins/autoptimize-criticalcss/faq/" target="_blank">the FAQ</a> or the info in the Job Queue instructions if all jobs remain in "N" status and no rules are created.', 'autoptimize' );
183 + ?>
184 + </p></div>
185 + <?php
186 + }
187 +
188 + // check if defer jQuery is active and warn if so.
189 + if ( 1 == $ao_ccss_deferjquery && PAnD::is_admin_notice_active( 'i-know-about-defer-inline-forever' ) ) {
190 + ?>
191 + <div data-dismissible="i-know-about-defer-inline-forever" class="notice-warning notice is-dismissible"><p>
192 + <?php
193 + _e( 'You have "defer jQuery and other non-aggregated JS-files" active (under Advanced Settings), but that functionality is deprecated and will be removed in the next major version of Autoptimize. Consider using the new "Do not aggregate but defer" and "Also defer inline JS" options on the main settings page instead.', 'autoptimize' );
194 + ?>
195 + </p></div>
196 + <?php
197 + }
198 +
199 + // warn if it looks as though the queue processing job looks isn't running
200 + // but store result in transient as to not to have to go through 2 arrays each and every time.
201 + $_warn_cron = get_transient( 'ao_ccss_cronwarning' );
202 + if ( ! empty( $ao_ccss_key ) && false === $_warn_cron ) {
203 + $_jobs_all_new = true;
204 + $_oldest_job_timestamp = microtime( true ); // now.
205 + $_jobs_too_old = true;
206 +
207 + // go over queue array.
208 + if ( empty( $ao_ccss_queue ) ) {
209 + // no jobs, then no warning.
210 + $_jobs_all_new = false;
211 + } else {
212 + foreach ( $ao_ccss_queue as $job ) {
213 + if ( $job['jctime'] < $_oldest_job_timestamp ) {
214 + // we need to catch the oldest job's timestamp.
215 + $_oldest_job_timestamp = $job['jctime'];
216 + }
217 +
218 + if ( 'NEW' !== $job['jqstat'] && 'firstrun' !== $job['ljid'] ) {
219 + // we have a non-"NEW" job which is not our pending firstrun job either, break the loop.
220 + $_jobs_all_new = false;
221 + break;
222 + }
223 + }
224 + }
225 +
226 + // is the oldest job too old (4h)?
227 + if ( $_oldest_job_timestamp > microtime( true ) - 60 * 60 * 4 ) {
228 + $_jobs_too_old = false;
229 + }
230 +
231 + if ( $_jobs_all_new && ! $this->ao_ccss_has_autorules() && $_jobs_too_old ) {
232 + $_warn_cron = 'on';
233 + $_transient_multiplier = 1; // store for 1 hour.
234 + } else {
235 + $_warn_cron = 'off';
236 + $_transient_multiplier = 4; // store for 4 hours.
237 + }
238 + // and set transient.
239 + set_transient( 'ao_ccss_cronwarning', $_warn_cron, $_transient_multiplier * HOUR_IN_SECONDS );
240 + }
241 +
242 + if ( ! empty( $ao_ccss_key ) && 'on' == $_warn_cron && PAnD::is_admin_notice_active( 'i-know-about-cron-1' ) ) {
243 + ?>
244 + <div data-dismissible="i-know-about-cron-1" class="notice-warning notice is-dismissible"><p>
245 + <?php
246 + _e( 'It looks like there might be a problem with WordPress cron (task scheduling). Have a look at <a href="https://wordpress.org/plugins/autoptimize-criticalcss/faq/" target="_blank">the FAQ</a> or the info in the Job Queue instructions if all jobs remain in "N" status and no rules are created.', 'autoptimize' );
247 + ?>
248 + </p></div>
249 + <?php
250 + } elseif ( ! empty( $ao_ccss_key ) && '2' == $ao_ccss_keyst && 'on' != $_warn_cron && ! $this->ao_ccss_has_autorules() ) {
251 + ?>
252 + <div class="notice-success notice"><p>
253 + <?php
254 + _e( 'Great, Autoptimize will now automatically start creating new critical CSS rules, you should see those appearing below in the next couple of hours.', 'autoptimize' );
255 + echo ' ';
256 + _e( 'In the meantime you might want to <strong>edit default rule CSS now</strong>, to avoid all CSS being inlined when no (applicable) rules are found.', 'autoptimize' );
257 + ?>
258 + </p></div>
259 + <?php
260 + }
261 +
262 + // warn if service is down.
263 + if ( ! empty( $ao_ccss_key ) && ! empty( $ao_ccss_servicestatus ) && is_array( $ao_ccss_servicestatus ) && 'down' === $ao_ccss_servicestatus['critcss']['status'] ) {
264 + ?>
265 + <div class="notice-warning notice"><p>
266 + <?php
267 + _e( 'The critical CSS service has been reported to be down. Although no new rules will be created for now, this does not prevent existing rules from being applied.', 'autoptimize' );
268 + ?>
269 + </p></div>
270 + <?php
271 + }
272 +
273 + // warn if too many rules (based on length of ao_ccss_rules option) as that might cause issues at e.g. wpengine
274 + // see https://wpengine.com/support/database-optimization-best-practices/#Autoloaded_Data
275 + $_raw_rules_length = strlen( get_option( 'autoptimize_ccss_rules', '') );
276 + if ( $_raw_rules_length > apply_filters( 'autoptimize_ccss_rules_length_warning', 500000 ) ) {
277 + ?>
278 + <div class="notice-warning notice"><p>
279 + <?php
280 + _e( 'It looks like the amount of Critical CSS rules is very high, it is recommended to reconfigure Autoptimize (e.g. by manually creating broader rules) to ensure less rules are created.', 'autoptimize' );
281 + ?>
282 + </p></div>
283 + <?php
284 + }
285 +
286 + // Settings Form.
287 + ?>
288 + <form id="settings" method="post" action="options.php">
289 + <?php
290 + settings_fields( 'ao_ccss_options_group' );
291 +
292 + // Get API key status.
293 + $key = $this->criticalcss->key_status( true );
294 +
295 + if ( $this->is_multisite_network_admin() ) {
296 + ?>
297 + <ul id="key-panel">
298 + <li class="itemDetail">
299 + <?php
300 + // translators: the placesholder is for a line of code in wp-config.php.
301 + echo sprintf( __( '<p>Critical CSS settings cannot be set at network level as critical CSS is specific to each sub-site.</p><p>You can however provide the critical CSS API key for use by all sites by adding this your wp-config.php as %s</p>', 'autoptimize' ), '<br/><code>define(\'AUTOPTIMIZE_CRITICALCSS_API_KEY\', \'eyJhbGmorestringsherexHa7MkOQFtDFkZgLmBLe-LpcHx4\');</code>' );
302 + ?>
303 + </li>
304 + </ul>
305 + <?php
306 + } else {
307 + if ( 'valid' == $key['status'] ) {
308 + // If key status is valid, render other panels.
309 + // Render rules section.
310 + ao_ccss_render_rules();
311 + // Render queue section.
312 + ao_ccss_render_queue();
313 + // Render advanced panel.
314 + ao_ccss_render_adv();
315 + } else {
316 + if ( apply_filters( 'autoptimize_filter_ccss_rules_without_api', true ) ) {
317 + // Render rules section for manual rules.
318 + ao_ccss_render_rules();
319 + } else {
320 + echo "<input class='hidden' name='autoptimize_ccss_queue' value='" . json_encode( $ao_ccss_rules, JSON_FORCE_OBJECT ) . "'>";
321 + }
322 +
323 + // But if key is other than valid, add hidden fields to persist settings when submitting form
324 + // Show explanation of why and how to get a API key.
325 + ao_ccss_render_explain();
326 +
327 + // Get viewport size.
328 + $viewport = $this->criticalcss->viewport();
329 +
330 + // Add hidden fields.
331 + echo "<input class='hidden' name='autoptimize_ccss_queue' value='" . json_encode( $ao_ccss_queue, JSON_FORCE_OBJECT ) . "'>";
332 + echo '<input class="hidden" name="autoptimize_ccss_viewport[w]" value="' . esc_attr( $viewport['w'] ) . '">';
333 + echo '<input class="hidden" name="autoptimize_ccss_viewport[h]" value="' . esc_attr( $viewport['h'] ) . '">';
334 + echo '<input class="hidden" name="autoptimize_ccss_finclude" value="' . esc_attr( $ao_ccss_finclude ) . '">';
335 + echo '<input class="hidden" name="autoptimize_ccss_rtimelimit" value="' . esc_attr( $ao_ccss_rtimelimit ) . '">';
336 + echo '<input class="hidden" name="autoptimize_ccss_debug" value="' . esc_attr( $ao_ccss_debug ) . '">';
337 + echo '<input class="hidden" name="autoptimize_ccss_noptimize" value="' . esc_attr( $ao_ccss_noptimize ) . '">';
338 + echo '<input class="hidden" name="autoptimize_css_defer_inline" value="' . esc_attr( $ao_css_defer_inline ) . '">';
339 + echo '<input class="hidden" name="autoptimize_ccss_loggedin" value="' . esc_attr( $ao_ccss_loggedin ). '">';
340 + echo '<input class="hidden" name="autoptimize_ccss_forcepath" value="' . esc_attr( $ao_ccss_forcepath ) . '">';
341 + }
342 + // Render key panel unconditionally.
343 + ao_ccss_render_key( $ao_ccss_key, $key['status'], $key['stmsg'], $key['msg'], $key['color'] );
344 + ?>
345 + <p class="submit left">
346 + <input type="submit" class="button-primary" value="<?php _e( 'Save Changes', 'autoptimize' ); ?>" />
347 + </p>
348 + <?php
349 + }
350 + ?>
351 + </form>
352 + <script>
353 + jQuery("form#settings").submit(function(){
354 + var input = jQuery("#autoptimize_ccss_domain");
355 + input.val(rot(input.val(), 13));
356 + });
357 + // rot JS from http://stackoverflow.com/a/617685/987044 .
358 + function rot(domainstring, itype) {
359 + return domainstring.toString().replace(/[a-zA-Z]/g, function (letter) {
360 + return String.fromCharCode((letter <= 'Z' ? 90 : 122) >= (letter = letter.charCodeAt(0) + itype) ? letter : letter - 26);
361 + });
362 + }
363 + </script>
364 + <form id="importSettingsForm"<?php if ( $this->is_multisite_network_admin() ) { echo ' class="hidden"'; } ?>>
365 + <span id="exportSettings" class="button-secondary"><?php _e( 'Export Settings', 'autoptimize' ); ?></span>
366 + <input class="button-secondary" id="importSettings" type="button" value="<?php _e( 'Import Settings', 'autoptimize' ); ?>" onclick="upload();return false;" />
367 + <input class="button-secondary" id="settingsfile" name="settingsfile" type="file" />
368 + </form>
369 + <div id="importdialog"></div>
370 + </div><!-- /#autoptimize_main -->
371 + </div><!-- /#wrap -->
372 + <?php
373 + if ( ! $this->is_multisite_network_admin() ) {
374 + // Include debug panel if debug mode is enable.
375 + if ( $ao_ccss_debug ) {
376 + ?>
377 + <div id="debug">
378 + <?php
379 + // Include debug panel.
380 + include( 'critcss-inc/admin_settings_debug.php' );
381 + ?>
382 + </div><!-- /#debug -->
68 383 <?php
69 - $ccss_explanation = '';
384 + }
385 + echo '<script>';
386 + include( 'critcss-inc/admin_settings_rules.js.php' );
387 + include( 'critcss-inc/admin_settings_queue.js.php' );
388 + include( 'critcss-inc/admin_settings_impexp.js.php' );
389 + echo '</script>';
390 + }
391 + }
70 392
71 - // get the HTML with the explanation of what critical CSS is.
72 - if ( $this->settings_screen_do_remote_http ) {
73 - $ccss_explanation = get_transient( 'ccss_explain_ao26' );
74 - if ( empty( $ccss_explanation ) ) {
75 - $ccss_expl_resp = wp_remote_get( 'https://misc.optimizingmatters.com/autoptimize_ccss_explain_ao26.html?ao_ver=' . AUTOPTIMIZE_PLUGIN_VERSION );
76 - if ( ! is_wp_error( $ccss_expl_resp ) ) {
77 - if ( '200' == wp_remote_retrieve_response_code( $ccss_expl_resp ) ) {
78 - $ccss_explanation = wp_kses_post( wp_remote_retrieve_body( $ccss_expl_resp ) );
79 - set_transient( 'ccss_explain_ao26', $ccss_explanation, WEEK_IN_SECONDS );
393 + public function ao_ccss_has_autorules() {
394 + static $_has_auto_rules = null;
395 +
396 + if ( null === $_has_auto_rules ) {
397 + $ao_ccss_rules = $this->criticalcss->get_option( 'rules' );
398 + $_has_auto_rules = false;
399 + if ( ! empty( $ao_ccss_rules ) ) {
400 + foreach ( array( 'types', 'paths' ) as $_typat ) {
401 + foreach ( $ao_ccss_rules[ $_typat ] as $rule ) {
402 + if ( ! empty( $rule['hash'] ) ) {
403 + // we have at least one AUTO job, so all is fine.
404 + $_has_auto_rules = true;
405 + break;
80 406 }
81 407 }
408 + if ( $_has_auto_rules ) {
409 + break;
410 + }
82 411 }
83 412 }
413 + }
84 414
85 - // placeholder text in case HTML is empty.
86 - if ( empty( $ccss_explanation ) ) {
87 - $ccss_explanation = '<h2>Fix render-blocking CSS!</h2><p>Significantly improve your first-paint times by making CSS non-render-blocking.</p><br /><a href="./plugin-install.php?s=autoptimize+criticalcss&tab=search&type=term" class="button">Install the "Autoptimize Critical CSS Power-Up"!</a>';
415 + return $_has_auto_rules;
416 + }
417 +
418 + public function is_multisite_network_admin() {
419 + static $_multisite_network_admin = null;
420 +
421 + if ( null === $_multisite_network_admin ) {
422 + if ( is_multisite() && is_network_admin() ) {
423 + $_multisite_network_admin = true;
424 + } else {
425 + $_multisite_network_admin = false;
88 426 }
427 + }
89 428
90 - // and echo it.
91 - echo $ccss_explanation . '<p>&nbsp;</p>';
92 - ?>
93 - </div>
94 - </div>
95 - <?php
429 + return $_multisite_network_admin;
96 430 }
97 431 }