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