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<title>[4577] sites/trunk/wordcamp.org/public_html/wp-content/plugins: WordCamp Site Cloner: Refactor for compatibility with WP 4.7 and Jetpack 4.2.2</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/4577">4577</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/4577","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>iandunn</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2016-12-23 17:27:38 +0000 (Fri, 23 Dec 2016)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>WordCamp Site Cloner: Refactor for compatibility with WP 4.7 and Jetpack 4.2.2

WordPress 4.7 added a Customizer feature that allows editing CSS. Jetpack 4.2.2 replaced the Custom CSS module with an entirely new one that is compatible with the Customizer feature, but broke backwards-compatibility with the Site Cloner and Remote CSS plugins.

This commit refactors the Site Cloner to restore compatibility with Jetpack, and add support for the new Core feature.

https://make.wordpress.org/core/2016/10/11/feature-proposal-better-theme-customizations-via-custom-css-with-live-previews/
https://make.wordpress.org/core/2016/11/26/extending-the-custom-css-editor/
https://github.com/Automattic/jetpack/issues/5539
https://github.com/Automattic/jetpack/pull/5804
https://core.trac.wordpress.org/ticket/35395
https://core.trac.wordpress.org/ticket/38672
https://core.trac.wordpress.org/ticket/39270</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#sitestrunkwordcamporgpublic_htmlwpcontentpluginswcptwcptwordcampwordcampadminphp">sites/trunk/wordcamp.org/public_html/wp-content/plugins/wcpt/wcpt-wordcamp/wordcamp-admin.php</a></li>
<li><a href="#sitestrunkwordcamporgpublic_htmlwpcontentpluginswordcampsiteclonerincludessourcesiteidsettingphp">sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/includes/source-site-id-setting.php</a></li>
<li><a href="#sitestrunkwordcamporgpublic_htmlwpcontentpluginswordcampsiteclonerwordcampsiteclonerphp">sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/wordcamp-site-cloner.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunkwordcamporgpublic_htmlwpcontentpluginswcptwcptwordcampwordcampadminphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordcamp.org/public_html/wp-content/plugins/wcpt/wcpt-wordcamp/wordcamp-admin.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordcamp.org/public_html/wp-content/plugins/wcpt/wcpt-wordcamp/wordcamp-admin.php     2016-12-23 17:27:34 UTC (rev 4576)
+++ sites/trunk/wordcamp.org/public_html/wp-content/plugins/wcpt/wcpt-wordcamp/wordcamp-admin.php       2016-12-23 17:27:38 UTC (rev 4577)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -720,6 +720,9 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( $old_status == 'wcpt-pre-planning' && $new_status == 'wcpt-pre-planning' ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // todo - bug: this won't ever run b/c of the early return above.
+                       // what commit made this mistake, and why?
+                       // what things are tied to this that haven't been running?
</ins><span class="cx" style="display: block; padding: 0 10px">                         do_action( 'wcpt_added_to_planning_schedule', $post );
</span><span class="cx" style="display: block; padding: 0 10px">                } elseif ( $old_status == 'wcpt-needs-schedule' && $new_status == 'wcpt-scheduled' ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        do_action( 'wcpt_added_to_final_schedule', $post );
</span></span></pre></div>
<a id="sitestrunkwordcamporgpublic_htmlwpcontentpluginswordcampsiteclonerincludessourcesiteidsettingphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/includes/source-site-id-setting.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/includes/source-site-id-setting.php  2016-12-23 17:27:34 UTC (rev 4576)
+++ sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/includes/source-site-id-setting.php    2016-12-23 17:27:38 UTC (rev 4577)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1,16 +1,19 @@
</span><span class="cx" style="display: block; padding: 0 10px"> <?php
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> namespace WordCamp\Site_Cloner;
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+use \WordCamp\RemoteCSS;
+use Jetpack_Custom_CSS_Enhancements;
+
</ins><span class="cx" style="display: block; padding: 0 10px"> defined( 'WPINC' ) or die();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-use \WordCamp\RemoteCSS;
-
</del><span class="cx" style="display: block; padding: 0 10px"> /**
</span><span class="cx" style="display: block; padding: 0 10px">  * Customizer Setting for source site ID
</span><span class="cx" style="display: block; padding: 0 10px">  *
</span><span class="cx" style="display: block; padding: 0 10px">  * This isn't an actual setting that gets stored in the database, it's just a temporary value to track the ID of
</span><span class="cx" style="display: block; padding: 0 10px">  * the site that that will be cloned. There are actually many data points that we'll import, but they don't fit
</span><span class="cx" style="display: block; padding: 0 10px">  * into the default model that the Customizer expects.
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ *
+ * @todo - We may no longer need a setting; see https://make.wordpress.org/core/2016/03/10/customizer-improvements-in-4-5/
</ins><span class="cx" style="display: block; padding: 0 10px">  */
</span><span class="cx" style="display: block; padding: 0 10px"> class Source_Site_ID_Setting extends \WP_Customize_Setting {
</span><span class="cx" style="display: block; padding: 0 10px">        public $type              = 'wcsc-source-site-id';
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -28,87 +31,47 @@
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                add_action( 'wp_head',                 array( $this, 'preview_source_site_css'  ), 99 );   // wp_print_styles is too early; the theme's stylesheet would get enqueued later and take precedence
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                add_filter( 'get_post_metadata',       array( $this, 'preview_jetpack_postmeta' ), 10, 4 );
-               add_filter( 'safecss_skip_stylesheet', array( $this, 'preview_skip_stylesheet'  ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         add_filter( 'safecss_skip_stylesheet', array( $this, 'preview_skip_stylesheet'  ), 15 );   // After Jetpack_Custom_CSS_Enhancements::preview_skip_stylesheet()
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                // Disable the current site's Custom CSS from being output
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                remove_action( 'wp_head', array( 'Jetpack_Custom_CSS', 'link_tag' ), 101 );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         remove_action( 'wp_head', 'wp_custom_css_cb', 11 ); // todo compat with WP 4.7. this line can be removed when r39616 is merged to the 4.7 branch
+               remove_action( 'wp_head', 'wp_custom_css_cb', 101 );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><span class="cx" style="display: block; padding: 0 10px">         * Print the source site's custom CSS in an inline style block
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         *
-        * It can't be easily enqueued as an external stylesheet because Jetpack_Custom_CSS::link_tag() returns early
-        * in the Customizer if the theme being previewed is different from the live theme.
</del><span class="cx" style="display: block; padding: 0 10px">          */
</span><span class="cx" style="display: block; padding: 0 10px">        public function preview_source_site_css() {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( method_exists( '\Jetpack', 'get_module_path' ) ) {
-                       require_once( \Jetpack::get_module_path( 'custom-css' ) );
-               } else {
-                       return;
-               }
-
</del><span class="cx" style="display: block; padding: 0 10px">                 switch_to_blog( $this->preview_source_site_id );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                printf(
</span><span class="cx" style="display: block; padding: 0 10px">                        '<style id="wcsc-source-site-custom-css">%s %s</style>',
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->get_cached_remote_css(),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        \Jetpack_Custom_CSS::get_css( true )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 wp_get_custom_css()
</ins><span class="cx" style="display: block; padding: 0 10px">                 );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                restore_current_blog();
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         * Overwrite the previewing site's Custom CSS settings with values from the source site
-        *
-        * @param mixed  $pre_filter_value
-        * @param int    $post_id
-        * @param string $meta_key
-        * @param bool   $return_single_value
-        *
-        * @return mixed
-        */
-       public function preview_jetpack_postmeta( $pre_filter_value, $post_id, $meta_key, $return_single_value ) {
-               if ( ! in_array( $meta_key, array( 'content_width' ) ) ) {
-                       return $pre_filter_value;
-               }
-
-               remove_filter( 'get_post_metadata', array( $this, 'preview_jetpack_postmeta' ), 10, 4 );    // avoid infinite recursion
-               switch_to_blog( $this->preview_source_site_id );
-
-               if ( $source_cite_css_post = \Jetpack_Custom_CSS::get_current_revision() ) {
-                       $pre_filter_value = get_post_meta( $source_cite_css_post['ID'], $meta_key, $return_single_value );
-               }
-
-               restore_current_blog();
-               add_filter( 'get_post_metadata', array( $this, 'preview_jetpack_postmeta' ), 10, 4 );
-
-               return $pre_filter_value;
-       }
-
-       /**
</del><span class="cx" style="display: block; padding: 0 10px">          * Determine whether or not to skip the primary stylesheet
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         * When the Custom CSS value for `Mode` is `Replacement`, Jetpack will prevent the primary stylesheet from
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+  * When the `Start Fresh` theme mod is set, Jetpack will prevent the primary stylesheet from
</ins><span class="cx" style="display: block; padding: 0 10px">          * being enqueued. We need to trigger that behavior based on the value on the source site, rather than the
</span><span class="cx" style="display: block; padding: 0 10px">         * current site.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-         * This could be actually handled along with other Jetpack options in preview_jetpack_postmeta(), if it
-        * weren't for the fact that Jetpack_Custom_CSS::skip_stylesheet always returns false in the Previewer.
-        *
</del><span class="cx" style="display: block; padding: 0 10px">          * @param bool $skip
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @return bool
</span><span class="cx" style="display: block; padding: 0 10px">         */
</span><span class="cx" style="display: block; padding: 0 10px">        public function preview_skip_stylesheet( $skip ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                remove_filter( 'safecss_skip_stylesheet', array( $this, 'preview_skip_stylesheet'  ), 15 ); // Avoid infinite recursion. Also, use same priority as originally set in preview()
</ins><span class="cx" style="display: block; padding: 0 10px">                 switch_to_blog( $this->preview_source_site_id );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( $source_cite_css_post = \Jetpack_Custom_CSS::get_current_revision() ) {
-                       $skip = 'no' === get_post_meta( $source_cite_css_post['ID'], 'custom_css_add', true );
-               }
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $skip = Jetpack_Custom_CSS_Enhancements::skip_stylesheet();
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                restore_current_blog();
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                add_filter( 'safecss_skip_stylesheet', array( $this, 'preview_skip_stylesheet'  ), 15 );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                return $skip;
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -133,7 +96,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $remote_css = str_replace(
</span><span class="cx" style="display: block; padding: 0 10px">                                array( '\\\00BB \\\0020', '\0BB \020', '0BB 020' ),
</span><span class="cx" style="display: block; padding: 0 10px">                                '\00BB \0020',
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $post->post_content_filtered
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $post->post_content
</ins><span class="cx" style="display: block; padding: 0 10px">                         );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -153,11 +116,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">        protected function update( $source_site_id ) {
</span><span class="cx" style="display: block; padding: 0 10px">                switch_to_blog( $source_site_id );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                if ( ! $source_cite_css_post = \Jetpack_Custom_CSS::get_current_revision() ) {
-                       restore_current_blog();
-                       return;
-               }
-
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $source_site_theme_mods = get_theme_mod( 'jetpack_custom_css' );
</ins><span class="cx" style="display: block; padding: 0 10px">                 $source_site_css = '';
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                // Add Remote CSS first
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -173,30 +132,32 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                // Add Jetpack Custom CSS second
-               if ( $custom_css = \Jetpack_Custom_CSS::get_css( false ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         /*
+                * Add Core Custom CSS second to maintain correct cascading order.
+                *
+                * Processed CSS and vanilla CSS are stored in `post_content`, but pre-processed CSS is stored in
+                * `post_content_filtered`.
+                */
+               if ( $custom_css_post = wp_get_custom_css_post() ) {
+                       if ( empty( $source_site_theme_mods['preprocessor'] ) ) {
+                               $custom_css = $custom_css_post->post_content;
+                       } else {
+                               $custom_css = $custom_css_post->post_content_filtered;
+                       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                         $source_site_css .= sprintf(
</span><span class="cx" style="display: block; padding: 0 10px">                                "/* %s */\n%s\n\n",
</span><span class="cx" style="display: block; padding: 0 10px">                                sprintf(
</span><span class="cx" style="display: block; padding: 0 10px">                                        esc_html__( 'Custom CSS from %s', 'wordcamporg' ),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        get_bloginfo( 'name' )
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 parse_url( home_url(), PHP_URL_HOST )
</ins><span class="cx" style="display: block; padding: 0 10px">                                 ),
</span><span class="cx" style="display: block; padding: 0 10px">                                $custom_css
</span><span class="cx" style="display: block; padding: 0 10px">                        );
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $source_site_preprocessor  = get_post_meta( $source_cite_css_post['ID'], 'custom_css_preprocessor', true );
-               $source_site_mode          = get_post_meta( $source_cite_css_post['ID'], 'custom_css_add', true );
-               $source_site_content_width = get_post_meta( $source_cite_css_post['ID'], 'content_width', true );
-
</del><span class="cx" style="display: block; padding: 0 10px">                 restore_current_blog();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                \Jetpack_Custom_CSS::save( array(
-                       'css'             => $source_site_css,
-                       'is_preview'      => false,
-                       'preprocessor'    => $source_site_preprocessor,
-                       'add_to_existing' => 'yes' === $source_site_mode ? true : false,
-                       'content_width'   => $source_site_content_width,
-               ) );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         wp_update_custom_css_post( $source_site_css );
+               set_theme_mod( 'jetpack_custom_css', $source_site_theme_mods );
</ins><span class="cx" style="display: block; padding: 0 10px">         }
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="sitestrunkwordcamporgpublic_htmlwpcontentpluginswordcampsiteclonerwordcampsiteclonerphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/wordcamp-site-cloner.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/wordcamp-site-cloner.php     2016-12-23 17:27:34 UTC (rev 4576)
+++ sites/trunk/wordcamp.org/public_html/wp-content/plugins/wordcamp-site-cloner/wordcamp-site-cloner.php       2016-12-23 17:27:38 UTC (rev 4577)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -269,13 +269,14 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                switch_to_blog( $site_id );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $theme_mods = get_option( 'theme_mods_' . get_stylesheet() );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 /*
</span><span class="cx" style="display: block; padding: 0 10px">                 * Sites with Coming Soon enabled probably don't have a finished design yet, so there's no point in
</span><span class="cx" style="display: block; padding: 0 10px">                 * cloning it.
</span><span class="cx" style="display: block; padding: 0 10px">                 */
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! coming_soon_plugin_enabled() ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $preprocessor = \Jetpack_Custom_CSS::get_preprocessor();
-                       $preprocessor = isset( $preprocessor[ 'name' ] ) ? $preprocessor[ 'name' ] : 'none';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $preprocessor = isset( $theme_mods['jetpack_custom_css']['preprocessor'] ) ? $theme_mods['jetpack_custom_css']['preprocessor'] : 'none';
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        $sites[ $site_id ] = array(
</span><span class="cx" style="display: block; padding: 0 10px">                                'site_id'          => $site_id,
</span></span></pre>
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