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<title>[47816] trunk/src: Themes: Prevent activation and live preview of themes that require a higher version of PHP or WordPress.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/47816">47816</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/47816","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-05-18 12:30:04 +0000 (Mon, 18 May 2020)</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'>Themes: Prevent activation and live preview of themes that require a higher version of PHP or WordPress.

Props afragen, jorbin, TimothyBlynJacobs, SergeyBiryukov.
See <a href="https://core.trac.wordpress.org/ticket/48491">#48491</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadmincustomizephp">trunk/src/wp-admin/customize.php</a></li>
<li><a href="#trunksrcwpadminincludesajaxactionsphp">trunk/src/wp-admin/includes/ajax-actions.php</a></li>
<li><a href="#trunksrcwpadminincludesthemephp">trunk/src/wp-admin/includes/theme.php</a></li>
<li><a href="#trunksrcwpadminthemeinstallphp">trunk/src/wp-admin/theme-install.php</a></li>
<li><a href="#trunksrcwpadminthemesphp">trunk/src/wp-admin/themes.php</a></li>
<li><a href="#trunksrcwpincludescustomizeclasswpcustomizethemecontrolphp">trunk/src/wp-includes/customize/class-wp-customize-theme-control.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadmincustomizephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/customize.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/customize.php  2020-05-18 04:36:57 UTC (rev 47815)
+++ trunk/src/wp-admin/customize.php    2020-05-18 12:30:04 UTC (rev 47816)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -177,11 +177,22 @@
</span><span class="cx" style="display: block; padding: 0 10px"> <div class="wp-full-overlay expanded">
</span><span class="cx" style="display: block; padding: 0 10px">        <form id="customize-controls" class="wrap wp-full-overlay-sidebar">
</span><span class="cx" style="display: block; padding: 0 10px">                <div id="customize-header-actions" class="wp-full-overlay-header">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        <?php $save_text = $wp_customize->is_theme_active() ? __( 'Publish' ) : __( 'Activate &amp; Publish' ); ?>
-                       <div id="customize-save-button-wrapper" class="customize-save-button-wrapper" >
-                               <?php submit_button( $save_text, 'primary save', 'save', false ); ?>
-                               <button id="publish-settings" class="publish-settings button-primary button dashicons dashicons-admin-generic" aria-label="<?php esc_attr_e( 'Publish Settings' ); ?>" aria-expanded="false" disabled></button>
-                       </div>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 <?php
+                       $compatible_wp  = is_wp_version_compatible( $wp_customize->theme()->get( 'RequiresWP' ) );
+                       $compatible_php = is_php_version_compatible( $wp_customize->theme()->get( 'RequiresPHP' ) );
+                       ?>
+                       <?php if ( $compatible_wp && $compatible_php ) : ?>
+                               <?php $save_text = $wp_customize->is_theme_active() ? __( 'Publish' ) : __( 'Activate &amp; Publish' ); ?>
+                               <div id="customize-save-button-wrapper" class="customize-save-button-wrapper" >
+                                       <?php submit_button( $save_text, 'primary save', 'save', false ); ?>
+                                       <button id="publish-settings" class="publish-settings button-primary button dashicons dashicons-admin-generic" aria-label="<?php esc_attr_e( 'Publish Settings' ); ?>" aria-expanded="false" disabled></button>
+                               </div>
+                       <?php else : ?>
+                               <?php $save_text = _x( 'Cannot Activate', 'theme' ); ?>
+                               <div id="customize-save-button-wrapper" class="customize-save-button-wrapper disabled" >
+                                       <button class="button button-primary disabled" aria-label="<?php esc_attr_e( 'Publish Settings' ); ?>" aria-expanded="false" disabled><?php echo $save_text; ?></button>
+                               </div>
+                       <?php endif; ?>
</ins><span class="cx" style="display: block; padding: 0 10px">                         <span class="spinner"></span>
</span><span class="cx" style="display: block; padding: 0 10px">                        <button type="button" class="customize-controls-preview-toggle">
</span><span class="cx" style="display: block; padding: 0 10px">                                <span class="controls"><?php _e( 'Customize' ); ?></span>
</span></span></pre></div>
<a id="trunksrcwpadminincludesajaxactionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/ajax-actions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/ajax-actions.php      2020-05-18 04:36:57 UTC (rev 47815)
+++ trunk/src/wp-admin/includes/ajax-actions.php        2020-05-18 12:30:04 UTC (rev 47816)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -3571,8 +3571,10 @@
</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">-                $theme->num_ratings = number_format_i18n( $theme->num_ratings );
-               $theme->preview_url = set_url_scheme( $theme->preview_url );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $theme->num_ratings    = number_format_i18n( $theme->num_ratings );
+               $theme->preview_url    = set_url_scheme( $theme->preview_url );
+               $theme->compatible_wp  = is_wp_version_compatible( $theme->requires );
+               $theme->compatible_php = is_php_version_compatible( $theme->requires_php );
</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">        wp_send_json_success( $api );
</span></span></pre></div>
<a id="trunksrcwpadminincludesthemephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/includes/theme.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/includes/theme.php     2020-05-18 04:36:57 UTC (rev 47815)
+++ trunk/src/wp-admin/includes/theme.php       2020-05-18 12:30:04 UTC (rev 47816)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -684,20 +684,22 @@
</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">                $prepared_themes[ $slug ] = array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        'id'           => $slug,
-                       'name'         => $theme->display( 'Name' ),
-                       'screenshot'   => array( $theme->get_screenshot() ), // @todo Multiple screenshots.
-                       'description'  => $theme->display( 'Description' ),
-                       'author'       => $theme->display( 'Author', false, true ),
-                       'authorAndUri' => $theme->display( 'Author' ),
-                       'version'      => $theme->display( 'Version' ),
-                       'tags'         => $theme->display( 'Tags' ),
-                       'parent'       => $parent,
-                       'active'       => $slug === $current_theme,
-                       'hasUpdate'    => isset( $updates[ $slug ] ),
-                       'hasPackage'   => isset( $updates[ $slug ] ) && ! empty( $updates[ $slug ]['package'] ),
-                       'update'       => get_theme_update_available( $theme ),
-                       'actions'      => array(
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 'id'            => $slug,
+                       'name'          => $theme->display( 'Name' ),
+                       'screenshot'    => array( $theme->get_screenshot() ), // @todo Multiple screenshots.
+                       'description'   => $theme->display( 'Description' ),
+                       'author'        => $theme->display( 'Author', false, true ),
+                       'authorAndUri'  => $theme->display( 'Author' ),
+                       'tags'          => $theme->display( 'Tags' ),
+                       'version'       => $theme->get( 'Version' ),
+                       'compatibleWP'  => is_wp_version_compatible( $theme->get( 'RequiresWP' ) ),
+                       'compatiblePHP' => is_php_version_compatible( $theme->get( 'RequiresPHP' ) ),
+                       'parent'        => $parent,
+                       'active'        => $slug === $current_theme,
+                       'hasUpdate'     => isset( $updates[ $slug ] ),
+                       'hasPackage'    => isset( $updates[ $slug ] ) && ! empty( $updates[ $slug ]['package'] ),
+                       'update'        => get_theme_update_available( $theme ),
+                       'actions'       => array(
</ins><span class="cx" style="display: block; padding: 0 10px">                                 'activate'  => current_user_can( 'switch_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=activate&amp;stylesheet=' . $encoded_slug ), 'switch-theme_' . $slug ) : null,
</span><span class="cx" style="display: block; padding: 0 10px">                                'customize' => $customize_action,
</span><span class="cx" style="display: block; padding: 0 10px">                                'delete'    => current_user_can( 'delete_themes' ) ? wp_nonce_url( admin_url( 'themes.php?action=delete&amp;stylesheet=' . $encoded_slug ), 'delete-theme_' . $slug ) : null,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -818,7 +820,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                                        <a href="{{{ data.actions['delete'] }}}" data-slug="{{ data.id }}" class="button button-secondary delete-theme"><?php _e( 'Delete' ); ?></a>
</span><span class="cx" style="display: block; padding: 0 10px">                                                <# } #>
</span><span class="cx" style="display: block; padding: 0 10px">                                        <?php } ?>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        <button type="button" class="button button-primary preview-theme" data-slug="{{ data.id }}"><?php _e( 'Live Preview' ); ?></button>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+                                       <# if ( data.compatibleWP && data.compatiblePHP ) { #>
+                                               <button type="button" class="button button-primary preview-theme" data-slug="{{ data.id }}"><?php _e( 'Live Preview' ); ?></button>
+                                       <# } else { #>
+                                               <button class="button button-primary disabled"><?php _e( 'Live Preview' ); ?></button>
+                                       <# } #>
</ins><span class="cx" style="display: block; padding: 0 10px">                                 <# } else { #>
</span><span class="cx" style="display: block; padding: 0 10px">                                        <button type="button" class="button theme-install" data-slug="{{ data.id }}"><?php _e( 'Install' ); ?></button>
</span><span class="cx" style="display: block; padding: 0 10px">                                        <button type="button" class="button button-primary theme-install preview" data-slug="{{ data.id }}"><?php _e( 'Install &amp; Preview' ); ?></button>
</span></span></pre></div>
<a id="trunksrcwpadminthemeinstallphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/theme-install.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/theme-install.php      2020-05-18 04:36:57 UTC (rev 47815)
+++ trunk/src/wp-admin/theme-install.php        2020-05-18 12:30:04 UTC (rev 47816)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -282,18 +282,34 @@
</span><span class="cx" style="display: block; padding: 0 10px">                <h3 class="theme-name">{{ data.name }}</h3>
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                <div class="theme-actions">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        <# console.log( data ); #>
</ins><span class="cx" style="display: block; padding: 0 10px">                         <# if ( data.installed ) { #>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                <?php
-                               /* translators: %s: Theme name. */
-                               $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
-                               ?>
-                               <# if ( data.activate_url ) { #>
-                                       <a class="button button-primary activate" href="{{ data.activate_url }}" aria-label="<?php echo esc_attr( $aria_label ); ?>"><?php _e( 'Activate' ); ?></a>
-                               <# } #>
-                               <# if ( data.customize_url ) { #>
-                                       <a class="button load-customize" href="{{ data.customize_url }}"><?php _e( 'Live Preview' ); ?></a>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         <# if ( data.compatible_wp && data.compatible_php ) { #>
+                                       <?php
+                                       /* translators: %s: Theme name. */
+                                       $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
+                                       ?>
+                                       <# if ( data.activate_url ) { #>
+                                               <a class="button button-primary activate" href="{{ data.activate_url }}" aria-label="<?php echo esc_attr( $aria_label ); ?>"><?php _e( 'Activate' ); ?></a>
+                                       <# } #>
+                                       <# if ( data.customize_url ) { #>
+                                               <a class="button load-customize" href="{{ data.customize_url }}"><?php _e( 'Live Preview' ); ?></a>
+                                       <# } else { #>
+                                               <button class="button preview install-theme-preview"><?php _e( 'Preview' ); ?></button>
+                                       <# } #>
</ins><span class="cx" style="display: block; padding: 0 10px">                                 <# } else { #>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        <button class="button preview install-theme-preview"><?php _e( 'Preview' ); ?></button>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 <?php
+                                       /* translators: %s: Theme name. */
+                                       $aria_label = sprintf( _x( 'Cannot Activate %s', 'theme' ), '{{ data.name }}' );
+                                       ?>
+                                       <# if ( data.activate_url ) { #>
+                                               <a class="button button-primary disabled" aria-label="<?php echo esc_attr( $aria_label ); ?>"><?php _ex( 'Cannot Activate', 'theme' ); ?></a>
+                                       <# } #>
+                                       <# if ( data.customize_url ) { #>
+                                               <a class="button disabled"><?php _e( 'Live Preview' ); ?></a>
+                                       <# } else { #>
+                                               <button class="button disabled"><?php _e( 'Preview' ); ?></button>
+                                       <# } #>
</ins><span class="cx" style="display: block; padding: 0 10px">                                 <# } #>
</span><span class="cx" style="display: block; padding: 0 10px">                        <# } else { #>
</span><span class="cx" style="display: block; padding: 0 10px">                                <?php
</span></span></pre></div>
<a id="trunksrcwpadminthemesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-admin/themes.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-admin/themes.php     2020-05-18 04:36:57 UTC (rev 47815)
+++ trunk/src/wp-admin/themes.php       2020-05-18 12:30:04 UTC (rev 47816)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -353,7 +353,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php if ( $theme['actions']['customize'] && current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) { ?>
</span><span class="cx" style="display: block; padding: 0 10px">                                <a class="button button-primary customize load-customize hide-if-no-customize" href="<?php echo $theme['actions']['customize']; ?>"><?php _e( 'Customize' ); ?></a>
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php } ?>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                <?php } else { ?>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         <?php } elseif ( $theme['compatibleWP'] && $theme['compatiblePHP'] ) { ?>
</ins><span class="cx" style="display: block; padding: 0 10px">                         <?php
</span><span class="cx" style="display: block; padding: 0 10px">                        /* translators: %s: Theme name. */
</span><span class="cx" style="display: block; padding: 0 10px">                        $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -362,6 +362,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) { ?>
</span><span class="cx" style="display: block; padding: 0 10px">                                <a class="button button-primary load-customize hide-if-no-customize" href="<?php echo $theme['actions']['customize']; ?>"><?php _e( 'Live Preview' ); ?></a>
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php } ?>
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                <?php } else { ?>
+                       <?php
+                       /* translators: %s: Theme name. */
+                       $aria_label = sprintf( _x( 'Cannot Activate %s', 'theme' ), '{{ data.name }}' );
+                       ?>
+                       <a class="button disabled" aria-label="<?php echo esc_attr( $aria_label ); ?>"><?php _ex( 'Cannot Activate', 'theme' ); ?></a>
+                       <?php if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) { ?>
+                               <a class="button button-primary hide-if-no-customize disabled"><?php _e( 'Live Preview' ); ?></a>
+                       <?php } ?>
</ins><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">                </div>
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -518,12 +527,21 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                        <a class="button button-primary customize load-customize hide-if-no-customize" href="{{{ data.actions.customize }}}"><?php _e( 'Customize' ); ?></a>
</span><span class="cx" style="display: block; padding: 0 10px">                                <# } #>
</span><span class="cx" style="display: block; padding: 0 10px">                        <# } else { #>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                <?php
-                               /* translators: %s: Theme name. */
-                               $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
-                               ?>
-                               <a class="button activate" href="{{{ data.actions.activate }}}" aria-label="<?php echo $aria_label; ?>"><?php _e( 'Activate' ); ?></a>
-                               <a class="button button-primary load-customize hide-if-no-customize" href="{{{ data.actions.customize }}}"><?php _e( 'Live Preview' ); ?></a>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         <# if ( data.compatibleWP && data.compatiblePHP ) { #>
+                                       <?php
+                                       /* translators: %s: Theme name. */
+                                       $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
+                                       ?>
+                                       <a class="button activate" href="{{{ data.actions.activate }}}" aria-label="<?php echo $aria_label; ?>"><?php _e( 'Activate' ); ?></a>
+                                       <a class="button button-primary load-customize hide-if-no-customize" href="{{{ data.actions.customize }}}"><?php _e( 'Live Preview' ); ?></a>
+                               <# } else { #>
+                                       <?php
+                                       /* translators: %s: Theme name. */
+                                       $aria_label = sprintf( _x( 'Cannot Activate %s', 'theme' ), '{{ data.name }}' );
+                                       ?>
+                                       <a class="button disabled" aria-label="<?php echo esc_attr( $aria_label ); ?>"><?php _ex( 'Cannot Activate', 'theme' ); ?></a>
+                                       <a class="button button-primary hide-if-no-customize disabled"><?php _e( 'Live Preview' ); ?></a>
+                               <# } #>
</ins><span class="cx" style="display: block; padding: 0 10px">                         <# } #>
</span><span class="cx" style="display: block; padding: 0 10px">                </div>
</span><span class="cx" style="display: block; padding: 0 10px">        </div>
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -592,14 +610,25 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                <?php echo implode( ' ', $current_theme_actions ); ?>
</span><span class="cx" style="display: block; padding: 0 10px">                        </div>
</span><span class="cx" style="display: block; padding: 0 10px">                        <div class="inactive-theme">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                <?php
-                               /* translators: %s: Theme name. */
-                               $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
-                               ?>
-                               <# if ( data.actions.activate ) { #>
-                                       <a href="{{{ data.actions.activate }}}" class="button activate" aria-label="<?php echo $aria_label; ?>"><?php _e( 'Activate' ); ?></a>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         <# if ( data.compatibleWP && data.compatiblePHP ) { #>
+                                       <?php
+                                       /* translators: %s: Theme name. */
+                                       $aria_label = sprintf( _x( 'Activate %s', 'theme' ), '{{ data.name }}' );
+                                       ?>
+                                       <# if ( data.actions.activate ) { #>
+                                               <a href="{{{ data.actions.activate }}}" class="button activate" aria-label="<?php echo $aria_label; ?>"><?php _e( 'Activate' ); ?></a>
+                                       <# } #>
+                                       <a href="{{{ data.actions.customize }}}" class="button button-primary load-customize hide-if-no-customize"><?php _e( 'Live Preview' ); ?></a>
+                               <# } else { #>
+                                       <?php
+                                       /* translators: %s: Theme name. */
+                                       $aria_label = sprintf( _x( 'Cannot Activate %s', 'theme' ), '{{ data.name }}' );
+                                       ?>
+                                       <# if ( data.actions.activate ) { #>
+                                               <a class="button disabled" aria-label="<?php echo $aria_label; ?>"><?php _ex( 'Cannot Activate', 'theme' ); ?></a>
+                                       <# } #>
+                                       <a class="button button-primary hide-if-no-customize disabled"><?php _e( 'Live Preview' ); ?></a>
</ins><span class="cx" style="display: block; padding: 0 10px">                                 <# } #>
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                <a href="{{{ data.actions.customize }}}" class="button button-primary load-customize hide-if-no-customize"><?php _e( 'Live Preview' ); ?></a>
</del><span class="cx" style="display: block; padding: 0 10px">                         </div>
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        <# if ( ! data.active && data.actions['delete'] ) { #>
</span></span></pre></div>
<a id="trunksrcwpincludescustomizeclasswpcustomizethemecontrolphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/customize/class-wp-customize-theme-control.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/customize/class-wp-customize-theme-control.php      2020-05-18 04:36:57 UTC (rev 47815)
+++ trunk/src/wp-includes/customize/class-wp-customize-theme-control.php        2020-05-18 12:30:04 UTC (rev 47816)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -121,7 +121,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                <div class="theme-id-container">
</span><span class="cx" style="display: block; padding: 0 10px">                                        <h3 class="theme-name" id="{{ data.section }}-{{ data.theme.id }}-name">{{ data.theme.name }}</h3>
</span><span class="cx" style="display: block; padding: 0 10px">                                        <div class="theme-actions">
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                <button type="button" class="button button-primary preview-theme" aria-label="<?php echo esc_attr( $preview_label ); ?>" data-slug="{{ data.theme.id }}"><?php _e( 'Live Preview' ); ?></button>
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         <# if ( data.theme.compatibleWP && data.theme.compatiblePHP ) { #>
+                                                       <button type="button" class="button button-primary preview-theme" aria-label="<?php echo esc_attr( $preview_label ); ?>" data-slug="{{ data.theme.id }}"><?php _e( 'Live Preview' ); ?></button>
+                                               <# } else { #>
+                                                       <button type="button" class="button button-primary disabled" aria-label="<?php echo esc_attr( $preview_label ); ?>"><?php _e( 'Live Preview' ); ?></button>
+                                               <# } #>
</ins><span class="cx" style="display: block; padding: 0 10px">                                         </div>
</span><span class="cx" style="display: block; padding: 0 10px">                                </div>
</span><span class="cx" style="display: block; padding: 0 10px">                                <div class="notice notice-success notice-alt"><p><?php _ex( 'Installed', 'theme' ); ?></p></div>
</span></span></pre>
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