WordPress/wp-admin/widgets.php

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<?php
/**
* Widgets administration panel.
*
* @package WordPress
* @subpackage Administration
*/
/** WordPress Administration Bootstrap */
require_once( 'admin.php' );
/** WordPress Administration Widgets API */
require_once(ABSPATH . 'wp-admin/includes/widgets.php');
if ( ! current_user_can('switch_themes') )
wp_die( __( 'Cheatin&#8217; uh?' ));
wp_enqueue_script('admin-widgets');
wp_admin_css( 'widgets' );
do_action( 'sidebar_admin_setup' );
$title = __( 'Widgets' );
$parent_file = 'themes.php';
// register the inactive_widgets area as sidebar
register_sidebar(array(
'name' => __('Inactive Widgets'),
'id' => 'wp_inactive_widgets',
'before_widget' => '',
'after_widget' => '',
'before_title' => '',
'after_title' => '',
));
// These are the widgets grouped by sidebar
$sidebars_widgets = wp_get_sidebars_widgets();
if ( empty( $sidebars_widgets ) )
$sidebars_widgets = wp_get_widget_defaults();
// look for "lost" widgets, this has to run at least on each theme change
function retrieve_widgets() {
global $wp_registered_widget_updates, $wp_registered_sidebars, $sidebars_widgets;
$_sidebars_widgets = array();
$sidebars = array_keys($wp_registered_sidebars);
$diff = array_diff( array_keys($sidebars_widgets), $sidebars );
if ( empty($diff) )
return;
unset( $sidebars_widgets['array_version'] );
// Move the known-good ones first
foreach ( $sidebars as $id ) {
if ( array_key_exists( $id, $sidebars_widgets ) ) {
$_sidebars_widgets[$id] = $sidebars_widgets[$id];
unset($sidebars_widgets[$id], $sidebars[$id]);
}
}
// Assign to each unmatched registered sidebar the first available orphan
while ( ( $sidebar = array_shift( $sidebars ) ) && $widgets = array_shift( $sidebars_widgets ) )
$_sidebars_widgets[ $sidebar ] = $widgets;
// if new theme has less sidebars than the old theme
if ( !empty($sidebars_widgets) ) {
foreach ( $sidebars_widgets as $lost => $val ) {
if ( is_array($val) )
$_sidebars_widgets['wp_inactive_widgets'] = array_merge( (array) $_sidebars_widgets['wp_inactive_widgets'], $val );
}
}
$sidebars_widgets = $_sidebars_widgets;
unset($_sidebars_widgets);
// find hidden/lost multi-widget instances
$shown_widgets = array();
foreach ( $sidebars_widgets as $sidebar ) {
if ( is_array($sidebar) )
$shown_widgets = array_merge($shown_widgets, $sidebar);
}
$all_widgets = array();
foreach ( $wp_registered_widget_updates as $key => $val ) {
if ( isset($val['id_base']) )
$all_widgets[] = $val['id_base'];
else
$all_widgets[] = $key;
}
$all_widgets = array_unique($all_widgets);
$lost_widgets = array();
foreach ( $all_widgets as $name ) {
$data = get_option( str_replace('-', '_', "widget_$name") );
if ( is_array($data) ) {
foreach ( $data as $num => $value ) {
if ( !is_numeric($num) ) // skip single widgets, some don't delete their settings
continue;
if ( is_array($value) && !in_array("$name-$num", $shown_widgets, true) )
$lost_widgets[] = "$name-$num";
}
}
}
$sidebars_widgets['wp_inactive_widgets'] = array_merge($lost_widgets, (array) $sidebars_widgets['wp_inactive_widgets']);
$sidebars_widgets['array_version'] = 3;
wp_set_sidebars_widgets($sidebars_widgets);
}
retrieve_widgets();
if ( count($wp_registered_sidebars) == 1 ) {
// If only "wp_inactive_widgets" is defined the theme has no sidebars, die.
require_once( 'admin-header.php' );
?>
<div class="wrap">
<?php screen_icon(); ?>
<h2><?php echo wp_specialchars( $title ); ?></h2>
<div class="error">
<p><?php _e( 'No Sidebars Defined' ); ?></p>
</div>
<p><?php _e( 'The theme you are currently using isn&#8217;t widget-aware, meaning that it has no sidebars that you are able to change. For information on making your theme widget-aware, please <a href="http://codex.wordpress.org/Widgetizing_Themes">follow these instructions</a>.' ); ?></p>
</div>
<?php
require_once( 'admin-footer.php' );
exit;
}
// We're saving a widget without js
if ( isset($_POST['savewidget']) || isset($_POST['removewidget']) ) {
$widget_id = $_POST['widget-id'];
check_admin_referer("save-delete-widget-$widget_id");
$sidebar_id = $_POST['insidebar'];
$position = isset($_POST[$sidebar_id . '_position']) ? (int) $_POST[$sidebar_id . '_position'] - 1 : 0;
$_POST['sidebar'] = $sidebar_id;
$id_base = $_POST['id_base'];
$number = isset($_POST['multi_number']) ? $_POST['multi_number'] : '';
$sidebar = isset($sidebars_widgets[$sidebar_id]) ? $sidebars_widgets[$sidebar_id] : array();
// delete
if ( isset($_POST['removewidget']) && $_POST['removewidget'] ) {
$widget = isset($wp_registered_widgets[$widget_id]) ? $wp_registered_widgets[$widget_id] : false;
if ( !in_array($widget_id, $sidebar, true) || !$widget ) {
wp_redirect('widgets.php?error=0');
exit;
}
$option = str_replace( '-', '_', 'widget_' . $id_base );
$data = get_option($option);
if ( isset($widget['params'][0]['number']) ) {
$number = $widget['params'][0]['number'];
if ( is_array($data) && isset($data[$number]) ) {
unset( $data[$number] );
update_option($option, $data);
}
} else {
if ( $data ) {
$data = array();
update_option($option, $data);
}
}
$sidebar = array_diff( $sidebar, array($widget_id) );
} else {
// save
foreach ( (array) $wp_registered_widget_updates as $name => $control ) {
if ( $name != $id_base || !is_callable($control['callback']) )
continue;
if ( $number ) {
// don't delete other instances of the same multi-widget
foreach ( $sidebar as $_widget_id ) {
if ( isset($wp_registered_widgets[$_widget_id]['params'][0]['number']) )
unset($wp_registered_widgets[$_widget_id]['params'][0]['number']);
}
$widget_id = "$id_base-$number";
}
ob_start();
call_user_func_array( $control['callback'], $control['params'] );
ob_end_clean();
// remove old position
$sidebar = array_diff( $sidebar, array($widget_id) );
foreach ( $sidebars_widgets as $key => $sb ) {
if ( is_array($sb) && in_array($widget_id, $sb, true) )
$sidebars_widgets[$key] = array_diff( $sb, array($widget_id) );
}
array_splice( $sidebar, $position, 0, $widget_id );
break;
}
}
$sidebars_widgets[$sidebar_id] = $sidebar;
wp_set_sidebars_widgets($sidebars_widgets);
wp_redirect('widgets.php?message=0');
exit;
}
// Output the widget form without js
if ( isset($_GET['editwidget']) && $_GET['editwidget'] ) {
$widget_id = $_GET['editwidget'];
if ( isset($_GET['addnew']) ) {
// Default to the first sidebar
$sidebar = array_shift( $keys = array_keys($wp_registered_sidebars) );
if ( isset($_GET['base']) && isset($_GET['num']) ) { // multi-widget
// Copy minimal info from an existing instance of this widget to a new instance
foreach ( $wp_registered_widget_controls as $control ) {
if ( $_GET['base'] === $control['id_base'] ) {
$control_callback = $control['callback'];
$multi_number = (int) $_GET['num'];
$control['params'][0]['number'] = $multi_number;
$control['id'] = $control['id_base'] . '-' . $multi_number;
$wp_registered_widget_controls[$control['id']] = $control;
break;
}
}
}
}
if ( isset($wp_registered_widget_controls[$widget_id]) && !isset($control) ) {
$control = $wp_registered_widget_controls[$widget_id];
$control_callback = $control['callback'];
}
if ( !isset($sidebar) )
$sidebar = isset($_GET['sidebar']) ? $_GET['sidebar'] : 'wp_inactive_widgets';
if ( !isset($multi_number) )
$multi_number = isset($control['params'][0]['number']) ? $control['params'][0]['number'] : '';
$id_base = isset($control['id_base']) ? $control['id_base'] : $control['id'];
// show the widget form
if ( is_callable( $control_callback ) ) {
$width = ' style="width:' . max($control['width'], 350) . 'px"';
$key = isset($_GET['key']) ? (int) $_GET['key'] : 0;
require_once( 'admin-header.php' ); ?>
<div class="wrap">
<?php screen_icon(); ?>
<h2><?php echo wp_specialchars( $title ); ?></h2>
<div class="editwidget"<?php echo $width; ?>>
<h3><?php printf( __( 'Widget %s' ), wp_specialchars( strip_tags($control['name']) ) ); ?></h3>
<form action="widgets.php" method="post">
<div class="widget-control">
<?php call_user_func_array( $control_callback, $control['params'] ); ?>
</div>
<div class="widget-position">
<table class="widefat"><thead><tr><th><?php _e('Sidebar'); ?></th><th><?php _e('Position'); ?></th></tr></thead><tbody>
<?php foreach ( $wp_registered_sidebars as $sbname => $sbvalue ) {
echo "\t\t<tr><td><label><input type='radio' name='insidebar' value='" . attr($sbname) . "'" . checked( $sbname, $sidebar, false ) . " /> $sbvalue[name]</label></td><td>";
if ( 'wp_inactive_widgets' == $sbname ) {
echo '&nbsp;';
} else {
if ( !isset($sidebars_widgets[$sbname]) || !is_array($sidebars_widgets[$sbname]) ) {
$j = 1;
} else {
$j = count($sidebars_widgets[$sbname]);
if ( isset($_GET['addnew']) || !in_array($widget_id, $sidebars_widgets[$sbname], true) )
$j++;
}
$selected = '';
echo "\t\t<select name='{$sbname}_position'>\n";
echo "\t\t<option value=''>" . __('-- select --') . "</option>\n";
for ( $i = 1; $i <= $j; $i++ ) {
if ( in_array($widget_id, $sidebars_widgets[$sbname], true) )
$selected = selected( $i, $key + 1, false );
echo "\t\t<option value='$i'$selected> $i </option>\n";
}
echo "\t\t</select>\n";
}
echo "</td></tr>\n";
} ?>
</tbody></table>
</div>
<div class="widget-control-actions">
<?php if ( isset($_GET['addnew']) ) { ?>
<a href="widgets.php" class="button alignleft"><?php _e('Cancel'); ?></a>
<?php } else { ?>
<input type="submit" name="removewidget" class="button alignleft" value="<?php _ea('Remove'); ?>" />
<?php } ?>
<input type="submit" name="savewidget" class="button-primary alignright" value="<?php _ea('Save Widget'); ?>" />
<input type="hidden" name="widget-id" class="widget-id" value="<?php echo attr($widget_id); ?>" />
<input type="hidden" name="id_base" class="id_base" value="<?php echo attr($id_base); ?>" />
<input type="hidden" name="multi_number" class="multi_number" value="<?php echo attr($multi_number); ?>" />
<?php wp_nonce_field("save-delete-widget-$widget_id"); ?>
</div>
</form>
</div>
</div>
<?php
require_once( 'admin-footer.php' );
exit;
}
wp_redirect('widgets.php?error=1');
exit;
}
$messages = array(
__('Changes saved.')
);
$errors = array(
__('Error while saving.'),
__('Error in displaying the widget settings form.')
);
require_once( 'admin-header.php' ); ?>
<div class="wrap">
<?php screen_icon(); ?>
<h2><?php echo wp_specialchars( $title ); ?></h2>
<?php if ( isset($_GET['message']) && isset($messages[$_GET['message']]) ) { ?>
<div id="message" class="updated fade"><p><?php echo $messages[$_GET['message']]; ?></p></div>
<?php } ?>
<?php if ( isset($_GET['error']) && isset($errors[$_GET['error']]) ) { ?>
<div id="message" class="error"><p><?php echo $errors[$_GET['error']]; ?></p></div>
<?php } ?>
<div class="widget-liquid-left">
<div id="widgets-left">
<div id="available-widgets" class="widgets-holder-wrap">
<h3 class="sidebar-name"><?php _e('Available Widgets'); ?></h3>
<?php wp_list_widgets(); ?>
<br class="clear" />
</div>
<div id="wp_inactive_widgets" class="widgets-holder-wrap">
<h3 class="sidebar-name"><?php _e('Inactive Widgets'); ?>
<span><img src="images/loading-publish.gif" class="ajax-feedback" title="" alt="" /></span></h3>
<p class="description"><?php _e('Drag widgets here to remove them from the web site but keep their settings.'); ?></p>
<?php wp_list_widget_controls('wp_inactive_widgets'); ?>
<br class="clear" />
</div>
</div>
</div>
<div class="widget-liquid-right">
<?php
$i = 0;
foreach ( $wp_registered_sidebars as $sidebar => $registered_sidebar ) {
if ( 'wp_inactive_widgets' == $sidebar )
continue; ?>
<div id="<?php echo attr( $sidebar ); ?>" class="widgets-holder-wrap">
<h3 class="sidebar-name"><?php echo wp_specialchars( $registered_sidebar['name'] ); ?>
<span><img src="images/loading-publish.gif" class="ajax-feedback" title="" alt="" /></span></h3>
<?php wp_list_widget_controls( $sidebar, $i ); // Show the control forms for each of the widgets in this sidebar ?>
</div>
<?php
$i++;
} ?>
</div>
<form action="" method="post">
<?php wp_nonce_field( 'save-sidebar-widgets', '_wpnonce_widgets', false ); ?>
</form>
<br class="clear" />
</div>
<?php
do_action( 'sidebar_admin_page' );
require_once( 'admin-footer.php' );