wp-admin/includes/class-wp-themes-list-table.php

   1 <?php
   2 /**
   3  * List Table API: WP_Themes_List_Table class
   4  *
   5  * @package WordPress
   6  * @subpackage Administration
   7  * @since 3.1.0
   8  */
   9
  10 /**
  11  * Core class used to implement displaying installed themes in a list table.
  12  *
  13  * @since 3.1.0
  14  * @access private
  15  *
  16  * @see WP_List_Table
  17  */
  18 class WP_Themes_List_Table extends WP_List_Table {
  19
  20         protected $search_terms = array();
  21         public $features = array();
  22
  23         /**
  24          * Constructor.
  25          *
  26          * @since 3.1.0
  27          * @access public
  28          *
  29          * @see WP_List_Table::__construct() for more information on default arguments.
  30          *
  31          * @param array $args An associative array of arguments.
  32          */
  33         public function __construct( $args = array() ) {
  34                 parent::__construct( array(
  35                         'ajax' => true,
  36                         'screen' => isset( $args['screen'] ) ? $args['screen'] : null,
  37                 ) );
  38         }
  39
  40         /**
  41          *
  42          * @return bool
  43          */
  44         public function ajax_user_can() {
  45                 // Do not check edit_theme_options here. Ajax calls for available themes require switch_themes.
  46                 return current_user_can( 'switch_themes' );
  47         }
  48
  49         /**
  50          * @access public
  51          */
  52         public function prepare_items() {
  53                 $themes = wp_get_themes( array( 'allowed' => true ) );
  54
  55                 if ( ! empty( $_REQUEST['s'] ) )
  56                         $this->search_terms = array_unique( array_filter( array_map( 'trim', explode( ',', strtolower( wp_unslash( $_REQUEST['s'] ) ) ) ) ) );
  57
  58                 if ( ! empty( $_REQUEST['features'] ) )
  59                         $this->features = $_REQUEST['features'];
  60
  61                 if ( $this->search_terms || $this->features ) {
  62                         foreach ( $themes as $key => $theme ) {
  63                                 if ( ! $this->search_theme( $theme ) )
  64                                         unset( $themes[ $key ] );
  65                         }
  66                 }
  67
  68                 unset( $themes[ get_option( 'stylesheet' ) ] );
  69                 WP_Theme::sort_by_name( $themes );
  70
  71                 $per_page = 36;
  72                 $page = $this->get_pagenum();
  73
  74                 $start = ( $page - 1 ) * $per_page;
  75
  76                 $this->items = array_slice( $themes, $start, $per_page, true );
  77
  78                 $this->set_pagination_args( array(
  79                         'total_items' => count( $themes ),
  80                         'per_page' => $per_page,
  81                         'infinite_scroll' => true,
  82                 ) );
  83         }
  84
  85         /**
  86          * @access public
  87          */
  88         public function no_items() {
  89                 if ( $this->search_terms || $this->features ) {
  90                         _e( 'No items found.' );
  91                         return;
  92                 }
  93
  94                 $blog_id = get_current_blog_id();
  95                 if ( is_multisite() ) {
  96                         if ( current_user_can( 'install_themes' ) && current_user_can( 'manage_network_themes' ) ) {
  97                                 printf( __( 'You only have one theme enabled for this site right now. Visit the Network Admin to <a href="%1$s">enable</a> or <a href="%2$s">install</a> more themes.' ), network_admin_url( 'site-themes.php?id=' . $blog_id ), network_admin_url( 'theme-install.php' ) );
  98
  99                                 return;
 100                         } elseif ( current_user_can( 'manage_network_themes' ) ) {
 101                                 printf( __( 'You only have one theme enabled for this site right now. Visit the Network Admin to <a href="%1$s">enable</a> more themes.' ), network_admin_url( 'site-themes.php?id=' . $blog_id ) );
 102
 103                                 return;
 104                         }
 105                         // Else, fallthrough. install_themes doesn't help if you can't enable it.
 106                 } else {
 107                         if ( current_user_can( 'install_themes' ) ) {
 108                                 printf( __( 'You only have one theme installed right now. Live a little! You can choose from over 1,000 free themes in the WordPress Theme Directory at any time: just click on the <a href="%s">Install Themes</a> tab above.' ), admin_url( 'theme-install.php' ) );
 109
 110                                 return;
 111                         }
 112                 }
 113                 // Fallthrough.
 114                 printf( __( 'Only the current theme is available to you. Contact the %s administrator for information about accessing additional themes.' ), get_site_option( 'site_name' ) );
 115         }
 116
 117         /**
 118          * @param string $which
 119          */
 120         public function tablenav( $which = 'top' ) {
 121                 if ( $this->get_pagination_arg( 'total_pages' ) <= 1 )
 122                         return;
 123                 ?>
 124                 <div class="tablenav themes <?php echo $which; ?>">
 125                         <?php $this->pagination( $which ); ?>
 126                         <span class="spinner"></span>
 127                         <br class="clear" />
 128                 </div>
 129                 <?php
 130         }
 131
 132         /**
 133          * @access public
 134          */
 135         public function display() {
 136                 wp_nonce_field( "fetch-list-" . get_class( $this ), '_ajax_fetch_list_nonce' );
 137 ?>
 138                 <?php $this->tablenav( 'top' ); ?>
 139
 140                 <div id="availablethemes">
 141                         <?php $this->display_rows_or_placeholder(); ?>
 142                 </div>
 143
 144                 <?php $this->tablenav( 'bottom' ); ?>
 145 <?php
 146         }
 147
 148         /**
 149          *
 150          * @return array
 151          */
 152         public function get_columns() {
 153                 return array();
 154         }
 155
 156         /**
 157          * @access public
 158          */
 159         public function display_rows_or_placeholder() {
 160                 if ( $this->has_items() ) {
 161                         $this->display_rows();
 162                 } else {
 163                         echo '<div class="no-items">';
 164                         $this->no_items();
 165                         echo '</div>';
 166                 }
 167         }
 168
 169         /**
 170          * @access public
 171          */
 172         public function display_rows() {
 173                 $themes = $this->items;
 174
 175                 foreach ( $themes as $theme ):
 176                         ?><div class="available-theme"><?php
 177
 178                         $template   = $theme->get_template();
 179                         $stylesheet = $theme->get_stylesheet();
 180                         $title      = $theme->display('Name');
 181                         $version    = $theme->display('Version');
 182                         $author     = $theme->display('Author');
 183
 184                         $activate_link = wp_nonce_url( "themes.php?action=activate&amp;template=" . urlencode( $template ) . "&amp;stylesheet=" . urlencode( $stylesheet ), 'switch-theme_' . $stylesheet );
 185
 186                         $actions = array();
 187                         $actions['activate'] = '<a href="' . $activate_link . '" class="activatelink" title="'
 188                                 . esc_attr( sprintf( __( 'Activate &#8220;%s&#8221;' ), $title ) ) . '">' . __( 'Activate' ) . '</a>';
 189
 190                         if ( current_user_can( 'edit_theme_options' ) && current_user_can( 'customize' ) ) {
 191                                 $actions['preview'] .= '<a href="' . wp_customize_url( $stylesheet ) . '" class="load-customize hide-if-no-customize">'
 192                                         . __( 'Live Preview' ) . '</a>';
 193                         }
 194
 195                         if ( ! is_multisite() && current_user_can( 'delete_themes' ) )
 196                                 $actions['delete'] = '<a class="submitdelete deletion" href="' . wp_nonce_url( 'themes.php?action=delete&amp;stylesheet=' . urlencode( $stylesheet ), 'delete-theme_' . $stylesheet )
 197                                         . '" onclick="' . "return confirm( '" . esc_js( sprintf( __( "You are about to delete this theme '%s'\n  'Cancel' to stop, 'OK' to delete." ), $title ) )
 198                                         . "' );" . '">' . __( 'Delete' ) . '</a>';
 199
 200                         /** This filter is documented in wp-admin/includes/class-wp-ms-themes-list-table.php */
 201                         $actions       = apply_filters( 'theme_action_links', $actions, $theme );
 202
 203                         /** This filter is documented in wp-admin/includes/class-wp-ms-themes-list-table.php */
 204                         $actions       = apply_filters( "theme_action_links_$stylesheet", $actions, $theme );
 205                         $delete_action = isset( $actions['delete'] ) ? '<div class="delete-theme">' . $actions['delete'] . '</div>' : '';
 206                         unset( $actions['delete'] );
 207
 208                         ?>
 209
 210                         <span class="screenshot hide-if-customize">
 211                                 <?php if ( $screenshot = $theme->get_screenshot() ) : ?>
 212                                         <img src="<?php echo esc_url( $screenshot ); ?>" alt="" />
 213                                 <?php endif; ?>
 214                         </span>
 215                         <a href="<?php echo wp_customize_url( $stylesheet ); ?>" class="screenshot load-customize hide-if-no-customize">
 216                                 <?php if ( $screenshot = $theme->get_screenshot() ) : ?>
 217                                         <img src="<?php echo esc_url( $screenshot ); ?>" alt="" />
 218                                 <?php endif; ?>
 219                         </a>
 220
 221                         <h3><?php echo $title; ?></h3>
 222                         <div class="theme-author"><?php printf( __( 'By %s' ), $author ); ?></div>
 223                         <div class="action-links">
 224                                 <ul>
 225                                         <?php foreach ( $actions as $action ): ?>
 226                                                 <li><?php echo $action; ?></li>
 227                                         <?php endforeach; ?>
 228                                         <li class="hide-if-no-js"><a href="#" class="theme-detail"><?php _e('Details') ?></a></li>
 229                                 </ul>
 230                                 <?php echo $delete_action; ?>
 231
 232                                 <?php theme_update_available( $theme ); ?>
 233                         </div>
 234
 235                         <div class="themedetaildiv hide-if-js">
 236                                 <p><strong><?php _e('Version:'); ?></strong> <?php echo $version; ?></p>
 237                                 <p><?php echo $theme->display('Description'); ?></p>
 238                                 <?php if ( $theme->parent() ) {
 239                                         printf( ' <p class="howto">' . __( 'This <a href="%1$s">child theme</a> requires its parent theme, %2$s.' ) . '</p>',
 240                                                 __( 'https://codex.wordpress.org/Child_Themes' ),
 241                                                 $theme->parent()->display( 'Name' ) );
 242                                 } ?>
 243                         </div>
 244
 245                         </div>
 246                 <?php
 247                 endforeach;
 248         }
 249
 250         /**
 251          * @param WP_Theme $theme
 252          * @return bool
 253          */
 254         public function search_theme( $theme ) {
 255                 // Search the features
 256                 foreach ( $this->features as $word ) {
 257                         if ( ! in_array( $word, $theme->get('Tags') ) )
 258                                 return false;
 259                 }
 260
 261                 // Match all phrases
 262                 foreach ( $this->search_terms as $word ) {
 263                         if ( in_array( $word, $theme->get('Tags') ) )
 264                                 continue;
 265
 266                         foreach ( array( 'Name', 'Description', 'Author', 'AuthorURI' ) as $header ) {
 267                                 // Don't mark up; Do translate.
 268                                 if ( false !== stripos( strip_tags( $theme->display( $header, false, true ) ), $word ) ) {
 269                                         continue 2;
 270                                 }
 271                         }
 272
 273                         if ( false !== stripos( $theme->get_stylesheet(), $word ) )
 274                                 continue;
 275
 276                         if ( false !== stripos( $theme->get_template(), $word ) )
 277                                 continue;
 278
 279                         return false;
 280                 }
 281
 282                 return true;
 283         }
 284
 285         /**
 286          * Send required variables to JavaScript land
 287          *
 288          * @since 3.4.0
 289          * @access public
 290          *
 291          * @param array $extra_args
 292          */
 293         public function _js_vars( $extra_args = array() ) {
 294                 $search_string = isset( $_REQUEST['s'] ) ? esc_attr( wp_unslash( $_REQUEST['s'] ) ) : '';
 295
 296                 $args = array(
 297                         'search' => $search_string,
 298                         'features' => $this->features,
 299                         'paged' => $this->get_pagenum(),
 300                         'total_pages' => ! empty( $this->_pagination_args['total_pages'] ) ? $this->_pagination_args['total_pages'] : 1,
 301                 );
 302
 303                 if ( is_array( $extra_args ) )
 304                         $args = array_merge( $args, $extra_args );
 305
 306                 printf( "<script type='text/javascript'>var theme_list_args = %s;</script>\n", wp_json_encode( $args ) );
 307                 parent::_js_vars();
 308         }
 309 }