wp-admin/widgets.php

   1 <?php
   2 /**
   3  * Widgets administration panel.
   4  *
   5  * @package WordPress
   6  * @subpackage Administration
   7  */
   8
   9 /** WordPress Administration Bootstrap */
  10 require_once( 'admin.php' );
  11
  12 /** WordPress Administration Widgets API */
  13 require_once(ABSPATH . 'wp-admin/includes/widgets.php');
  14
  15 if ( ! current_user_can('switch_themes') )
  16         wp_die( __( 'Cheatin&#8217; uh?' ));
  17
  18 wp_admin_css( 'widgets' );
  19
  20 $widgets_access = get_user_setting( 'widgets_access' );
  21 if ( isset($_GET['widgets-access']) ) {
  22         $widgets_access = 'on' == $_GET['widgets-access'] ? 'on' : 'off';
  23         set_user_setting( 'widgets_access', $widgets_access );
  24 }
  25
  26 if ( 'on' == $widgets_access )
  27         add_filter( 'admin_body_class', create_function('', '{return " widgets_access ";}') );
  28 else
  29         wp_enqueue_script('admin-widgets');
  30
  31 do_action( 'sidebar_admin_setup' );
  32
  33 $title = __( 'Widgets' );
  34 $parent_file = 'themes.php';
  35
  36 // register the inactive_widgets area as sidebar
  37 register_sidebar(array(
  38         'name' => __('Inactive Widgets'),
  39         'id' => 'wp_inactive_widgets',
  40         'description' => '',
  41         'before_widget' => '',
  42         'after_widget' => '',
  43         'before_title' => '',
  44         'after_title' => '',
  45 ));
  46
  47 // These are the widgets grouped by sidebar
  48 $sidebars_widgets = wp_get_sidebars_widgets();
  49 if ( empty( $sidebars_widgets ) )
  50         $sidebars_widgets = wp_get_widget_defaults();
  51
  52 // look for "lost" widgets, this has to run at least on each theme change
  53 function retrieve_widgets() {
  54         global $wp_registered_widget_updates, $wp_registered_sidebars, $sidebars_widgets, $wp_registered_widgets;
  55
  56         $_sidebars_widgets = array();
  57         $sidebars = array_keys($wp_registered_sidebars);
  58
  59         unset( $sidebars_widgets['array_version'] );
  60
  61         $old = array_keys($sidebars_widgets);
  62         sort($old);
  63         sort($sidebars);
  64
  65         if ( $old == $sidebars )
  66                 return;
  67
  68         // Move the known-good ones first
  69         foreach ( $sidebars as $id ) {
  70                 if ( array_key_exists( $id, $sidebars_widgets ) ) {
  71                         $_sidebars_widgets[$id] = $sidebars_widgets[$id];
  72                         unset($sidebars_widgets[$id], $sidebars[$id]);
  73                 }
  74         }
  75
  76         // if new theme has less sidebars than the old theme
  77         if ( !empty($sidebars_widgets) ) {
  78                 foreach ( $sidebars_widgets as $lost => $val ) {
  79                         if ( is_array($val) )
  80                                 $_sidebars_widgets['wp_inactive_widgets'] = array_merge( (array) $_sidebars_widgets['wp_inactive_widgets'], $val );
  81                 }
  82         }
  83
  84         // discard invalid, theme-specific widgets from sidebars
  85         $shown_widgets = array();
  86         foreach ( $_sidebars_widgets as $sidebar => $widgets ) {
  87                 if ( !is_array($widgets) )
  88                         continue;
  89
  90                 $_widgets = array();
  91                 foreach ( $widgets as $widget ) {
  92                         if ( isset($wp_registered_widgets[$widget]) )
  93                                 $_widgets[] = $widget;
  94                 }
  95                 $_sidebars_widgets[$sidebar] = $_widgets;
  96                 $shown_widgets = array_merge($shown_widgets, $_widgets);
  97         }
  98
  99         $sidebars_widgets = $_sidebars_widgets;
 100         unset($_sidebars_widgets, $_widgets);
 101
 102         // find hidden/lost multi-widget instances
 103         $lost_widgets = array();
 104         foreach ( $wp_registered_widgets as $key => $val ) {
 105                 if ( in_array($key, $shown_widgets, true) )
 106                         continue;
 107
 108                 $number = preg_replace('/.+?-([0-9]+)$/', '$1', $key);
 109
 110                 if ( 2 > (int) $number )
 111                         continue;
 112
 113                 $lost_widgets[] = $key;
 114         }
 115
 116         $sidebars_widgets['wp_inactive_widgets'] = array_merge($lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets']);
 117         wp_set_sidebars_widgets($sidebars_widgets);
 118 }
 119 retrieve_widgets();
 120
 121 if ( count($wp_registered_sidebars) == 1 ) {
 122         // If only "wp_inactive_widgets" is defined the theme has no sidebars, die.
 123         require_once( 'admin-header.php' );
 124 ?>
 125
 126         <div class="wrap">
 127         <?php screen_icon(); ?>
 128         <h2><?php echo esc_html( $title ); ?></h2>
 129                 <div class="error">
 130                         <p><?php _e( 'No Sidebars Defined' ); ?></p>
 131                 </div>
 132                 <p><?php _e( 'The theme you are currently using isn&#8217;t widget-aware, meaning that it has no sidebars that you are able to change. For information on making your theme widget-aware, please <a href="http://codex.wordpress.org/Widgetizing_Themes">follow these instructions</a>.' ); ?></p>
 133         </div>
 134
 135 <?php
 136         require_once( 'admin-footer.php' );
 137         exit;
 138 }
 139
 140 // We're saving a widget without js
 141 if ( isset($_POST['savewidget']) || isset($_POST['removewidget']) ) {
 142         $widget_id = $_POST['widget-id'];
 143         check_admin_referer("save-delete-widget-$widget_id");
 144
 145         $number = isset($_POST['multi_number']) ? (int) $_POST['multi_number'] : '';
 146         if ( $number ) {
 147                 foreach ( $_POST as $key => $val ) {
 148                         if ( is_array($val) && preg_match('/__i__|%i%/', key($val)) ) {
 149                                 $_POST[$key] = array( $number => array_shift($val) );
 150                                 break;
 151                         }
 152                 }
 153         }
 154
 155         $sidebar_id = $_POST['sidebar'];
 156         $position = isset($_POST[$sidebar_id . '_position']) ? (int) $_POST[$sidebar_id . '_position'] - 1 : 0;
 157
 158         $id_base = $_POST['id_base'];
 159         $sidebar = isset($sidebars_widgets[$sidebar_id]) ? $sidebars_widgets[$sidebar_id] : array();
 160
 161         // delete
 162         if ( isset($_POST['removewidget']) && $_POST['removewidget'] ) {
 163
 164                 if ( !in_array($widget_id, $sidebar, true) ) {
 165                         wp_redirect('widgets.php?error=0');
 166                         exit;
 167                 }
 168
 169                 $sidebar = array_diff( $sidebar, array($widget_id) );
 170                 $_POST = array('sidebar' => $sidebar_id, 'widget-' . $id_base => array(), 'the-widget-id' => $widget_id, 'delete_widget' => '1');
 171         }
 172
 173         $_POST['widget-id'] = $sidebar;
 174
 175         foreach ( (array) $wp_registered_widget_updates as $name => $control ) {
 176                 if ( $name != $id_base || !is_callable($control['callback']) )
 177                         continue;
 178
 179                 ob_start();
 180                         call_user_func_array( $control['callback'], $control['params'] );
 181                 ob_end_clean();
 182
 183                 break;
 184         }
 185
 186         $sidebars_widgets[$sidebar_id] = $sidebar;
 187
 188         // remove old position
 189         if ( !isset($_POST['delete_widget']) ) {
 190                 foreach ( $sidebars_widgets as $key => $sb ) {
 191                         if ( is_array($sb) )
 192                                 $sidebars_widgets[$key] = array_diff( $sb, array($widget_id) );
 193                 }
 194                 array_splice( $sidebars_widgets[$sidebar_id], $position, 0, $widget_id );
 195         }
 196
 197         wp_set_sidebars_widgets($sidebars_widgets);
 198         wp_redirect('widgets.php?message=0');
 199         exit;
 200 }
 201
 202 // Output the widget form without js
 203 if ( isset($_GET['editwidget']) && $_GET['editwidget'] ) {
 204         $widget_id = $_GET['editwidget'];
 205
 206         if ( isset($_GET['addnew']) ) {
 207                 // Default to the first sidebar
 208                 $sidebar = array_shift( $keys = array_keys($wp_registered_sidebars) );
 209
 210                 if ( isset($_GET['base']) && isset($_GET['num']) ) { // multi-widget
 211                         // Copy minimal info from an existing instance of this widget to a new instance
 212                         foreach ( $wp_registered_widget_controls as $control ) {
 213                                 if ( $_GET['base'] === $control['id_base'] ) {
 214                                         $control_callback = $control['callback'];
 215                                         $multi_number = (int) $_GET['num'];
 216                                         $control['params'][0]['number'] = -1;
 217                                         $widget_id = $control['id'] = $control['id_base'] . '-' . $multi_number;
 218                                         $wp_registered_widget_controls[$control['id']] = $control;
 219                                         break;
 220                                 }
 221                         }
 222                 }
 223         }
 224
 225         if ( isset($wp_registered_widget_controls[$widget_id]) && !isset($control) ) {
 226                 $control = $wp_registered_widget_controls[$widget_id];
 227                 $control_callback = $control['callback'];
 228         } elseif ( !isset($wp_registered_widget_controls[$widget_id]) && isset($wp_registered_widgets[$widget_id]) ) {
 229                 $name = esc_html( strip_tags($wp_registered_widgets[$widget_id]['name']) );
 230         }
 231
 232         if ( !isset($name) )
 233                 $name = esc_html( strip_tags($control['name']) );
 234
 235         if ( !isset($sidebar) )
 236                 $sidebar = isset($_GET['sidebar']) ? $_GET['sidebar'] : 'wp_inactive_widgets';
 237
 238         if ( !isset($multi_number) )
 239                 $multi_number = isset($control['params'][0]['number']) ? $control['params'][0]['number'] : '';
 240
 241         $id_base = isset($control['id_base']) ? $control['id_base'] : $control['id'];
 242
 243         // show the widget form
 244         $width = ' style="width:' . max($control['width'], 350) . 'px"';
 245         $key = isset($_GET['key']) ? (int) $_GET['key'] : 0;
 246
 247         require_once( 'admin-header.php' ); ?>
 248         <div class="wrap">
 249         <?php screen_icon(); ?>
 250         <h2><?php echo esc_html( $title ); ?></h2>
 251         <div class="editwidget"<?php echo $width; ?>>
 252         <h3><?php printf( __( 'Widget %s' ), $name ); ?></h3>
 253
 254         <form action="widgets.php" method="post">
 255         <div class="widget-inside">
 256 <?php
 257         if ( is_callable( $control_callback ) )
 258                 call_user_func_array( $control_callback, $control['params'] );
 259         else
 260                 echo '<p>' . __('There are no options for this widget.') . "</p>\n"; ?>
 261         </div>
 262
 263         <p class="describe"><?php _e('Select both the sidebar for this widget and the position of the widget in that sidebar.'); ?></p>
 264         <div class="widget-position">
 265         <table class="widefat"><thead><tr><th><?php _e('Sidebar'); ?></th><th><?php _e('Position'); ?></th></tr></thead><tbody>
 266 <?php
 267         foreach ( $wp_registered_sidebars as $sbname => $sbvalue ) {
 268                 echo "\t\t<tr><td><label><input type='radio' name='sidebar' value='" . esc_attr($sbname) . "'" . checked( $sbname, $sidebar, false ) . " /> $sbvalue[name]</label></td><td>";
 269                 if ( 'wp_inactive_widgets' == $sbname ) {
 270                         echo '&nbsp;';
 271                 } else {
 272                         if ( !isset($sidebars_widgets[$sbname]) || !is_array($sidebars_widgets[$sbname]) ) {
 273                                 $j = 1;
 274                                 $sidebars_widgets[$sbname] = array();
 275                         } else {
 276                                 $j = count($sidebars_widgets[$sbname]);
 277                                 if ( isset($_GET['addnew']) || !in_array($widget_id, $sidebars_widgets[$sbname], true) )
 278                                         $j++;
 279                         }
 280                         $selected = '';
 281                         echo "\t\t<select name='{$sbname}_position'>\n";
 282                         echo "\t\t<option value=''>" . __('-- select --') . "</option>\n";
 283                         for ( $i = 1; $i <= $j; $i++ ) {
 284                                 if ( in_array($widget_id, $sidebars_widgets[$sbname], true) )
 285                                         $selected = selected( $i, $key + 1, false );
 286                                 echo "\t\t<option value='$i'$selected> $i </option>\n";
 287                         }
 288                         echo "\t\t</select>\n";
 289                 }
 290                 echo "</td></tr>\n";
 291         } ?>
 292         </tbody></table>
 293         </div>
 294
 295         <div class="widget-control-actions">
 296 <?php   if ( isset($_GET['addnew']) ) { ?>
 297         <a href="widgets.php" class="button alignleft"><?php _e('Cancel'); ?></a>
 298 <?php   } else { ?>
 299         <input type="submit" name="removewidget" class="button alignleft" value="<?php esc_attr_e('Delete'); ?>" />
 300 <?php   } ?>
 301         <input type="submit" name="savewidget" class="button-primary alignright" value="<?php esc_attr_e('Save Widget'); ?>" />
 302         <input type="hidden" name="widget-id" class="widget-id" value="<?php echo esc_attr($widget_id); ?>" />
 303         <input type="hidden" name="id_base" class="id_base" value="<?php echo esc_attr($id_base); ?>" />
 304         <input type="hidden" name="multi_number" class="multi_number" value="<?php echo esc_attr($multi_number); ?>" />
 305 <?php   wp_nonce_field("save-delete-widget-$widget_id"); ?>
 306         <br class="clear" />
 307         </div>
 308         </form>
 309         </div>
 310         </div>
 311 <?php
 312         require_once( 'admin-footer.php' );
 313         exit;
 314 }
 315
 316 $messages = array(
 317         __('Changes saved.')
 318 );
 319
 320 $errors = array(
 321         __('Error while saving.'),
 322         __('Error in displaying the widget settings form.')
 323 );
 324
 325 require_once( 'admin-header.php' ); ?>
 326
 327 <div class="wrap">
 328 <?php screen_icon(); ?>
 329 <h2><?php echo esc_html( $title ); ?></h2>
 330
 331 <?php if ( isset($_GET['message']) && isset($messages[$_GET['message']]) ) { ?>
 332 <div id="message" class="updated fade"><p><?php echo $messages[$_GET['message']]; ?></p></div>
 333 <?php } ?>
 334 <?php if ( isset($_GET['error']) && isset($errors[$_GET['error']]) ) { ?>
 335 <div id="message" class="error"><p><?php echo $errors[$_GET['error']]; ?></p></div>
 336 <?php } ?>
 337
 338 <div class="widget-liquid-left">
 339 <div id="widgets-left">
 340         <div id="available-widgets" class="widgets-holder-wrap">
 341                 <div class="sidebar-name">
 342                 <div class="sidebar-name-arrow"><br /></div>
 343                 <h3><?php _e('Available Widgets'); ?> <span id="removing-widget"><?php _e('Deactivate'); ?> <span></span></span></h3></div>
 344                 <div class="widget-holder">
 345                 <p class="description"><?php _e('Drag widgets from here to a sidebar on the right to activate them. Drag widgets back here to deactivate them and delete their settings.'); ?></p>
 346                 <div id="widget-list">
 347                 <?php wp_list_widgets(); ?>
 348                 </div>
 349                 <br class='clear' />
 350                 </div>
 351                 <br class="clear" />
 352         </div>
 353
 354         <div class="widgets-holder-wrap">
 355                 <div class="sidebar-name">
 356                 <div class="sidebar-name-arrow"><br /></div>
 357                 <h3><?php _e('Inactive Widgets'); ?>
 358                 <span><img src="images/wpspin_light.gif" class="ajax-feedback" title="" alt="" /></span></h3></div>
 359                 <div class="widget-holder inactive">
 360                 <p class="description"><?php _e('Drag widgets here to remove them from the sidebar but keep their settings.'); ?></p>
 361                 <?php wp_list_widget_controls('wp_inactive_widgets'); ?>
 362                 <br class="clear" />
 363                 </div>
 364         </div>
 365 </div>
 366 </div>
 367
 368 <div class="widget-liquid-right">
 369 <div id="widgets-right">
 370 <?php
 371 $i = 0;
 372 foreach ( $wp_registered_sidebars as $sidebar => $registered_sidebar ) {
 373         if ( 'wp_inactive_widgets' == $sidebar )
 374                 continue;
 375         $closed = $i ? ' closed' : ''; ?>
 376         <div class="widgets-holder-wrap<?php echo $closed; ?>">
 377         <div class="sidebar-name">
 378         <div class="sidebar-name-arrow"><br /></div>
 379         <h3><?php echo esc_html( $registered_sidebar['name'] ); ?>
 380         <span><img src="images/wpspin_dark.gif" class="ajax-feedback" title="" alt="" /></span></h3></div>
 381         <?php wp_list_widget_controls( $sidebar ); // Show the control forms for each of the widgets in this sidebar ?>
 382         </div>
 383 <?php
 384         $i++;
 385 } ?>
 386 </div>
 387 </div>
 388 <form action="" method="post">
 389 <?php wp_nonce_field( 'save-sidebar-widgets', '_wpnonce_widgets', false ); ?>
 390 </form>
 391 <br class="clear" />
 392 </div>
 393
 394 <?php
 395 do_action( 'sidebar_admin_page' );
 396 require_once( 'admin-footer.php' );