admin_header_callback = $admin_header_callback;
$this->admin_image_div_callback = $admin_image_div_callback;
add_action( 'admin_menu', array( $this, 'init' ) );
add_action( 'wp_ajax_set-background-image', array( $this, 'wp_set_background_image' ) );
}
/**
* Set up the hooks for the Custom Background admin page.
*
* @since 3.0.0
*/
function init() {
if ( ! current_user_can('edit_theme_options') )
return;
$this->page = $page = add_theme_page(__('Background'), __('Background'), 'edit_theme_options', 'custom-background', array(&$this, 'admin_page'));
add_action("load-$page", array(&$this, 'admin_load'));
add_action("load-$page", array(&$this, 'take_action'), 49);
add_action("load-$page", array(&$this, 'handle_upload'), 49);
if ( isset( $_REQUEST['context'] ) && $_REQUEST['context'] == 'custom-background' ) {
add_filter( 'attachment_fields_to_edit', array( $this, 'attachment_fields_to_edit' ), 10, 2 );
add_filter( 'media_upload_tabs', array( $this, 'filter_upload_tabs' ) );
add_filter( 'media_upload_mime_type_links', '__return_empty_array' );
}
if ( $this->admin_header_callback )
add_action("admin_head-$page", $this->admin_header_callback, 51);
}
/**
* Set up the enqueue for the CSS & JavaScript files.
*
* @since 3.0.0
*/
function admin_load() {
get_current_screen()->add_help_tab( array(
'id' => 'overview',
'title' => __('Overview'),
'content' =>
'' . __( 'You can customize the look of your site without touching any of your theme’s code by using a custom background. Your background can be an image or a color.' ) . '
' .
'' . __( 'To use a background image, simply upload it, then choose your display options below. You can display a single instance of your image, or tile it to fill the screen. You can have your background fixed in place, so your site content moves on top of it, or you can have it scroll with your site.' ) . '
' .
'' . __( 'You can also choose a background color by clicking the Select Color button and either typing in a legitimate HTML hex value, e.g. “#ff0000” for red, or by choosing a color using the color picker.' ) . '
' .
'' . __( 'Don’t forget to click on the Save Changes button when you are finished.' ) . '
'
) );
get_current_screen()->set_help_sidebar(
'' . __( 'For more information:' ) . '
' .
'' . __( 'Documentation on Custom Background' ) . '
' .
'' . __( 'Support Forums' ) . '
'
);
add_thickbox();
wp_enqueue_media();
wp_enqueue_script('custom-background');
wp_enqueue_style('wp-color-picker');
}
/**
* Execute custom background modification.
*
* @since 3.0.0
*/
function take_action() {
if ( empty($_POST) )
return;
if ( isset($_POST['reset-background']) ) {
check_admin_referer('custom-background-reset', '_wpnonce-custom-background-reset');
remove_theme_mod('background_image');
remove_theme_mod('background_image_thumb');
$this->updated = true;
return;
}
if ( isset($_POST['remove-background']) ) {
// @TODO: Uploaded files are not removed here.
check_admin_referer('custom-background-remove', '_wpnonce-custom-background-remove');
set_theme_mod('background_image', '');
set_theme_mod('background_image_thumb', '');
$this->updated = true;
wp_safe_redirect( $_POST['_wp_http_referer'] );
return;
}
if ( isset($_POST['background-repeat']) ) {
check_admin_referer('custom-background');
if ( in_array($_POST['background-repeat'], array('repeat', 'no-repeat', 'repeat-x', 'repeat-y')) )
$repeat = $_POST['background-repeat'];
else
$repeat = 'repeat';
set_theme_mod('background_repeat', $repeat);
}
if ( isset($_POST['background-position-x']) ) {
check_admin_referer('custom-background');
if ( in_array($_POST['background-position-x'], array('center', 'right', 'left')) )
$position = $_POST['background-position-x'];
else
$position = 'left';
set_theme_mod('background_position_x', $position);
}
if ( isset($_POST['background-attachment']) ) {
check_admin_referer('custom-background');
if ( in_array($_POST['background-attachment'], array('fixed', 'scroll')) )
$attachment = $_POST['background-attachment'];
else
$attachment = 'fixed';
set_theme_mod('background_attachment', $attachment);
}
if ( isset($_POST['background-color']) ) {
check_admin_referer('custom-background');
$color = preg_replace('/[^0-9a-fA-F]/', '', $_POST['background-color']);
if ( strlen($color) == 6 || strlen($color) == 3 )
set_theme_mod('background_color', $color);
else
set_theme_mod('background_color', '');
}
$this->updated = true;
}
/**
* Display the custom background page.
*
* @since 3.0.0
*/
function admin_page() {
?>
updated) ) { ?>
Visit your site to see how it looks.' ), home_url( '/' ) ); ?>
admin_image_div_callback ) {
call_user_func($this->admin_image_div_callback);
} else {
?>
false);
$file = wp_handle_upload($_FILES['import'], $overrides);
if ( isset($file['error']) )
wp_die( $file['error'] );
$url = $file['url'];
$type = $file['type'];
$file = $file['file'];
$filename = basename($file);
// Construct the object array
$object = array(
'post_title' => $filename,
'post_content' => $url,
'post_mime_type' => $type,
'guid' => $url,
'context' => 'custom-background'
);
// Save the data
$id = wp_insert_attachment($object, $file);
// Add the meta-data
wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file ) );
update_post_meta( $id, '_wp_attachment_is_custom_background', get_option('stylesheet' ) );
set_theme_mod('background_image', esc_url_raw($url));
$thumbnail = wp_get_attachment_image_src( $id, 'thumbnail' );
set_theme_mod('background_image_thumb', esc_url_raw( $thumbnail[0] ) );
do_action('wp_create_file_in_uploads', $file, $id); // For replication
$this->updated = true;
}
/**
* Replace default attachment actions with "Set as background" link.
*
* @since 3.4.0
*/
function attachment_fields_to_edit( $form_fields, $post ) {
$form_fields = array( 'image-size' => $form_fields['image-size'] );
$form_fields['buttons'] = array( 'tr' => ' | ' . __( 'Set as background' ) . ' |
' );
$form_fields['context'] = array( 'input' => 'hidden', 'value' => 'custom-background' );
return $form_fields;
}
/**
* Leave only "Media Library" tab in the uploader window.
*
* @since 3.4.0
*/
function filter_upload_tabs() {
return array( 'library' => __('Media Library') );
}
public function wp_set_background_image() {
if ( ! current_user_can('edit_theme_options') || ! isset( $_POST['attachment_id'] ) ) exit;
$attachment_id = absint($_POST['attachment_id']);
$sizes = array_keys(apply_filters( 'image_size_names_choose', array('thumbnail' => __('Thumbnail'), 'medium' => __('Medium'), 'large' => __('Large'), 'full' => __('Full Size')) ));
$size = 'thumbnail';
if ( in_array( $_POST['size'], $sizes ) )
$size = esc_attr( $_POST['size'] );
update_post_meta( $attachment_id, '_wp_attachment_is_custom_background', get_option('stylesheet' ) );
$url = wp_get_attachment_image_src( $attachment_id, $size );
$thumbnail = wp_get_attachment_image_src( $attachment_id, 'thumbnail' );
set_theme_mod( 'background_image', esc_url_raw( $url[0] ) );
set_theme_mod( 'background_image_thumb', esc_url_raw( $thumbnail[0] ) );
exit;
}
}