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Editing: theme-editor.php
<?php /** * Theme editor administration panel. * * @package WordPress * @subpackage Administration */ /** WordPress Administration Bootstrap */ require_once( dirname( __FILE__ ) . '/admin.php' ); if ( is_multisite() && ! is_network_admin() ) { wp_redirect( network_admin_url( 'theme-editor.php' ) ); exit(); } if ( ! current_user_can( 'edit_themes' ) ) { wp_die( '<p>' . __( 'Sorry, you are not allowed to edit templates for this site.' ) . '</p>' ); } $title = __( 'Edit Themes' ); $parent_file = 'themes.php'; get_current_screen()->add_help_tab( array( 'id' => 'overview', 'title' => __( 'Overview' ), 'content' => '<p>' . __( 'You can use the theme editor to edit the individual CSS and PHP files which make up your theme.' ) . '</p>' . '<p>' . __( 'Begin by choosing a theme to edit from the dropdown menu and clicking the Select button. A list then appears of the theme’s template files. Clicking once on any file name causes the file to appear in the large Editor box.' ) . '</p>' . '<p>' . __( 'For PHP files, you can use the Documentation dropdown to select from functions recognized in that file. Look Up takes you to a web page with reference material about that particular function.' ) . '</p>' . '<p id="editor-keyboard-trap-help-1">' . __( 'When using a keyboard to navigate:' ) . '</p>' . '<ul>' . '<li id="editor-keyboard-trap-help-2">' . __( 'In the editing area, the Tab key enters a tab character.' ) . '</li>' . '<li id="editor-keyboard-trap-help-3">' . __( 'To move away from this area, press the Esc key followed by the Tab key.' ) . '</li>' . '<li id="editor-keyboard-trap-help-4">' . __( 'Screen reader users: when in forms mode, you may need to press the Esc key twice.' ) . '</li>' . '</ul>' . '<p>' . __( 'After typing in your edits, click Update File.' ) . '</p>' . '<p>' . __( '<strong>Advice:</strong> Think very carefully about your site crashing if you are live-editing the theme currently in use.' ) . '</p>' . '<p>' . sprintf( /* translators: %s: link to documentation on child themes */ __( 'Upgrading to a newer version of the same theme will override changes made here. To avoid this, consider creating a <a href="%s">child theme</a> instead.' ), __( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' ) ) . '</p>' . ( is_network_admin() ? '<p>' . __( 'Any edits to files from this screen will be reflected on all sites in the network.' ) . '</p>' : '' ), ) ); get_current_screen()->set_help_sidebar( '<p><strong>' . __( 'For more information:' ) . '</strong></p>' . '<p>' . __( '<a href="https://codex.wordpress.org/Theme_Development">Documentation on Theme Development</a>' ) . '</p>' . '<p>' . __( '<a href="https://codex.wordpress.org/Using_Themes">Documentation on Using Themes</a>' ) . '</p>' . '<p>' . __( '<a href="https://codex.wordpress.org/Editing_Files">Documentation on Editing Files</a>' ) . '</p>' . '<p>' . __( '<a href="https://codex.wordpress.org/Template_Tags">Documentation on Template Tags</a>' ) . '</p>' . '<p>' . __( '<a href="https://wordpress.org/support/">Support</a>' ) . '</p>' ); wp_reset_vars( array( 'action', 'error', 'file', 'theme' ) ); if ( $theme ) { $stylesheet = $theme; } else { $stylesheet = get_stylesheet(); } $theme = wp_get_theme( $stylesheet ); if ( ! $theme->exists() ) { wp_die( __( 'The requested theme does not exist.' ) ); } if ( $theme->errors() && 'theme_no_stylesheet' == $theme->errors()->get_error_code() ) { wp_die( __( 'The requested theme does not exist.' ) . ' ' . $theme->errors()->get_error_message() ); } $allowed_files = $style_files = array(); $has_templates = false; $file_types = wp_get_theme_file_editable_extensions( $theme ); foreach ( $file_types as $type ) { switch ( $type ) { case 'php': $allowed_files += $theme->get_files( 'php', -1 ); $has_templates = ! empty( $allowed_files ); break; case 'css': $style_files = $theme->get_files( 'css', -1 ); $allowed_files['style.css'] = $style_files['style.css']; $allowed_files += $style_files; break; default: $allowed_files += $theme->get_files( $type, -1 ); break; } } // Move functions.php and style.css to the top. if ( isset( $allowed_files['functions.php'] ) ) { $allowed_files = array( 'functions.php' => $allowed_files['functions.php'] ) + $allowed_files; } if ( isset( $allowed_files['style.css'] ) ) { $allowed_files = array( 'style.css' => $allowed_files['style.css'] ) + $allowed_files; } if ( empty( $file ) ) { $relative_file = 'style.css'; $file = $allowed_files['style.css']; } else { $relative_file = wp_unslash( $file ); $file = $theme->get_stylesheet_directory() . '/' . $relative_file; } validate_file_to_edit( $file, $allowed_files ); // Handle fallback editing of file when JavaScript is not available. $edit_error = null; $posted_content = null; if ( 'POST' === $_SERVER['REQUEST_METHOD'] ) { $r = wp_edit_theme_plugin_file( wp_unslash( $_POST ) ); if ( is_wp_error( $r ) ) { $edit_error = $r; if ( check_ajax_referer( 'edit-theme_' . $stylesheet . '_' . $relative_file, 'nonce', false ) && isset( $_POST['newcontent'] ) ) { $posted_content = wp_unslash( $_POST['newcontent'] ); } } else { wp_redirect( add_query_arg( array( 'a' => 1, // This means "success" for some reason. 'theme' => $stylesheet, 'file' => $relative_file, ), admin_url( 'theme-editor.php' ) ) ); exit; } } $settings = array( 'codeEditor' => wp_enqueue_code_editor( compact( 'file' ) ), ); wp_enqueue_script( 'wp-theme-plugin-editor' ); wp_add_inline_script( 'wp-theme-plugin-editor', sprintf( 'jQuery( function( $ ) { wp.themePluginEditor.init( $( "#template" ), %s ); } )', wp_json_encode( $settings ) ) ); wp_add_inline_script( 'wp-theme-plugin-editor', 'wp.themePluginEditor.themeOrPlugin = "theme";' ); require_once( ABSPATH . 'wp-admin/admin-header.php' ); update_recently_edited( $file ); if ( ! is_file( $file ) ) { $error = true; } $content = ''; if ( ! empty( $posted_content ) ) { $content = $posted_content; } elseif ( ! $error && filesize( $file ) > 0 ) { $f = fopen( $file, 'r' ); $content = fread( $f, filesize( $file ) ); if ( '.php' == substr( $file, strrpos( $file, '.' ) ) ) { $functions = wp_doc_link_parse( $content ); $docs_select = '<select name="docs-list" id="docs-list">'; $docs_select .= '<option value="">' . esc_attr__( 'Function Name…' ) . '</option>'; foreach ( $functions as $function ) { $docs_select .= '<option value="' . esc_attr( urlencode( $function ) ) . '">' . htmlspecialchars( $function ) . '()</option>'; } $docs_select .= '</select>'; } $content = esc_textarea( $content ); } $file_description = get_file_description( $relative_file ); $file_show = array_search( $file, array_filter( $allowed_files ) ); $description = esc_html( $file_description ); if ( $file_description != $file_show ) { $description .= ' <span>(' . esc_html( $file_show ) . ')</span>'; } ?> <div class="wrap"> <h1><?php echo esc_html( $title ); ?></h1> <?php if ( isset( $_GET['a'] ) ) : ?> <div id="message" class="updated notice is-dismissible"> <p><?php _e( 'File edited successfully.' ); ?></p> </div> <?php elseif ( is_wp_error( $edit_error ) ) : ?> <div id="message" class="notice notice-error"> <p><?php _e( 'There was an error while trying to update the file. You may need to fix something and try updating again.' ); ?></p> <pre><?php echo esc_html( $edit_error->get_error_message() ? $edit_error->get_error_message() : $edit_error->get_error_code() ); ?></pre> </div> <?php endif; ?> <?php if ( preg_match( '/\.css$/', $file ) ) : ?> <div id="message" class="notice-info notice"> <p><strong><?php _e( 'Did you know?' ); ?></strong></p> <p> <?php echo sprintf( /* translators: %s: link to Custom CSS section in the Customizer */ __( 'There’s no need to change your CSS here — you can edit and live preview CSS changes in the <a href="%s">built-in CSS editor</a>.' ), esc_url( add_query_arg( 'autofocus[section]', 'custom_css', admin_url( 'customize.php' ) ) ) ); ?> </p> </div> <?php endif; ?> <div class="fileedit-sub"> <div class="alignleft"> <h2> <?php echo $theme->display( 'Name' ); if ( $description ) { echo ': ' . $description;} ?> </h2> </div> <div class="alignright"> <form action="theme-editor.php" method="get"> <strong><label for="theme"><?php _e( 'Select theme to edit:' ); ?> </label></strong> <select name="theme" id="theme"> <?php foreach ( wp_get_themes( array( 'errors' => null ) ) as $a_stylesheet => $a_theme ) { if ( $a_theme->errors() && 'theme_no_stylesheet' == $a_theme->errors()->get_error_code() ) { continue; } $selected = $a_stylesheet == $stylesheet ? ' selected="selected"' : ''; echo "\n\t" . '<option value="' . esc_attr( $a_stylesheet ) . '"' . $selected . '>' . $a_theme->display( 'Name' ) . '</option>'; } ?> </select> <?php submit_button( __( 'Select' ), '', 'Submit', false ); ?> </form> </div> <br class="clear" /> </div> <?php if ( $theme->errors() ) { echo '<div class="error"><p><strong>' . __( 'This theme is broken.' ) . '</strong> ' . $theme->errors()->get_error_message() . '</p></div>'; } ?> <div id="templateside"> <h2 id="theme-files-label"><?php _e( 'Theme Files' ); ?></h2> <ul role="tree" aria-labelledby="theme-files-label"> <?php if ( ( $has_templates || $theme->parent() ) && $theme->parent() ) : ?> <li class="howto"> <?php /* translators: %s: link to edit parent theme */ echo sprintf( __( 'This child theme inherits templates from a parent theme, %s.' ), sprintf( '<a href="%s">%s</a>', self_admin_url( 'theme-editor.php?theme=' . urlencode( $theme->get_template() ) ), $theme->parent()->display( 'Name' ) ) ); ?> </li> <?php endif; ?> <li role="treeitem" tabindex="-1" aria-expanded="true" aria-level="1" aria-posinset="1" aria-setsize="1"> <ul role="group"> <?php wp_print_theme_file_tree( wp_make_theme_file_tree( $allowed_files ) ); ?> </ul> </li> </ul> </div> <?php if ( $error ) : echo '<div class="error"><p>' . __( 'Oops, no such file exists! Double check the name and try again, merci.' ) . '</p></div>'; else : ?> <form name="template" id="template" action="theme-editor.php" method="post"> <?php wp_nonce_field( 'edit-theme_' . $stylesheet . '_' . $relative_file, 'nonce' ); ?> <div> <label for="newcontent" id="theme-plugin-editor-label"><?php _e( 'Selected file content:' ); ?></label> <textarea cols="70" rows="30" name="newcontent" id="newcontent" aria-describedby="editor-keyboard-trap-help-1 editor-keyboard-trap-help-2 editor-keyboard-trap-help-3 editor-keyboard-trap-help-4"><?php echo $content; ?></textarea> <input type="hidden" name="action" value="update" /> <input type="hidden" name="file" value="<?php echo esc_attr( $relative_file ); ?>" /> <input type="hidden" name="theme" value="<?php echo esc_attr( $theme->get_stylesheet() ); ?>" /> </div> <?php if ( ! empty( $functions ) ) : ?> <div id="documentation" class="hide-if-no-js"> <label for="docs-list"><?php _e( 'Documentation:' ); ?></label> <?php echo $docs_select; ?> <input disabled id="docs-lookup" type="button" class="button" value="<?php esc_attr_e( 'Look Up' ); ?>" onclick="if ( '' != jQuery('#docs-list').val() ) { window.open( 'https://api.wordpress.org/core/handbook/1.0/?function=' + escape( jQuery( '#docs-list' ).val() ) + '&locale=<?php echo urlencode( get_user_locale() ); ?>&version=<?php echo urlencode( get_bloginfo( 'version' ) ); ?>&redirect=true'); }" /> </div> <?php endif; ?> <div> <div class="editor-notices"> <?php if ( is_child_theme() && $theme->get_stylesheet() == get_template() ) : ?> <div class="notice notice-warning inline"> <p> <?php if ( is_writeable( $file ) ) { ?> <strong><?php _e( 'Caution:' ); ?></strong><?php } ?> <?php _e( 'This is a file in your current parent theme.' ); ?> </p> </div> <?php endif; ?> </div> <?php if ( is_writeable( $file ) ) : ?> <p class="submit"> <?php submit_button( __( 'Update File' ), 'primary', 'submit', false ); ?> <span class="spinner"></span> </p> <?php else : ?> <p><em><?php _e( 'You need to make this file writable before you can save your changes. See <a href="https://codex.wordpress.org/Changing_File_Permissions">the Codex</a> for more information.' ); ?></em></p> <?php endif; ?> </div> <?php wp_print_file_editor_templates(); ?> </form> <?php endif; // $error ?> <br class="clear" /> </div> <?php $dismissed_pointers = explode( ',', (string) get_user_meta( get_current_user_id(), 'dismissed_wp_pointers', true ) ); if ( ! in_array( 'theme_editor_notice', $dismissed_pointers, true ) ) : // Get a back URL $referer = wp_get_referer(); $excluded_referer_basenames = array( 'theme-editor.php', 'wp-login.php' ); if ( $referer && ! in_array( basename( parse_url( $referer, PHP_URL_PATH ) ), $excluded_referer_basenames, true ) ) { $return_url = $referer; } else { $return_url = admin_url( '/' ); } ?> <div id="file-editor-warning" class="notification-dialog-wrap file-editor-warning hide-if-no-js hidden"> <div class="notification-dialog-background"></div> <div class="notification-dialog"> <div class="file-editor-warning-content"> <div class="file-editor-warning-message"> <h1><?php _e( 'Heads up!' ); ?></h1> <p> <?php echo sprintf( /* translators: %s: link to documentation on child themes */ __( 'You appear to be making direct edits to your theme in the WordPress dashboard. We recommend that you don’t! Editing your theme directly could break your site and your changes may be lost in future updates. If you need to tweak more than your theme’s CSS, you might want to try <a href="%s">making a child theme</a>.' ), esc_url( __( 'https://developer.wordpress.org/themes/advanced-topics/child-themes/' ) ) ); ?> </p> <p><?php _e( 'If you decide to go ahead with direct edits anyway, use a file manager to create a copy with a new name and hang on to the original. That way, you can re-enable a functional version if something goes wrong.' ); ?></p> </div> <p> <a class="button file-editor-warning-go-back" href="<?php echo esc_url( $return_url ); ?>"><?php _e( 'Go back' ); ?></a> <button type="button" class="file-editor-warning-dismiss button button-primary"><?php _e( 'I understand' ); ?></button> </p> </div> </div> </div> <?php endif; // editor warning notice include( ABSPATH . 'wp-admin/admin-footer.php' );
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