false,
);
if ( ! isset( $field['options']['args'] ) )
$field['options']['args'] = $default_args;
else
$field['options']['args'] = wp_parse_args( $field['options']['args'], $default_args );
// Show field as checkbox list by default
if ( ! isset( $field['options']['type'] ) )
$field['options']['type'] = 'checkbox_list';
// If field is shown as checkbox list, add multiple value
if ( in_array( $field['options']['type'], array( 'checkbox_list', 'checkbox_tree' ) ) )
{
$field['multiple'] = true;
$field['field_name'] = "{$field['id']}[]";
}
// For select tree: display it as a normal select box (no multiple attribute), but allows to save multiple values
if ( 'select_tree' == $field['options']['type'] )
$field['field_name'] = "{$field['id']}[]";
if ( in_array( $field['options']['type'], array( 'checkbox_tree', 'select_tree' ) ) )
{
if ( isset( $field['options']['args']['parent'] ) )
{
$field['options']['parent'] = $field['options']['args']['parent'];
unset( $field['options']['args']['parent'] );
}
else
{
$field['options']['parent'] = 0;
}
}
return $field;
}
/**
* Get field HTML
*
* @param $html
* @param $field
* @param $meta
*
* @return string
*/
static function html( $html, $meta, $field )
{
$options = $field['options'];
$terms = get_terms( $options['taxonomy'], $options['args'] );
$html = '';
// Checkbox LIST
if ( 'checkbox_list' === $options['type'] )
{
$html = array();
$tpl = '';
foreach ( $terms as $term )
{
$html[] = sprintf(
$tpl,
$field['field_name'],
$term->slug,
checked( in_array( $term->slug, $meta ), true, false ),
$term->name
);
}
$html = implode( '
', $html );
}
// Checkbox TREE
elseif ( 'checkbox_tree' === $options['type'] )
{
$elements = self::process_terms( $terms );
$html .= self::walk_checkbox_tree( $meta, $field, $elements, $field['options']['parent'], true );
}
// Select TREE
elseif ( 'select_tree' === $options['type'] )
{
$elements = self::process_terms( $terms );
$html .= self::walk_select_tree( $meta, $field, $elements, $field['options']['parent'], '', true );
}
// Select
else
{
$multiple = $field['multiple'] ? " multiple='multiple' style='height: auto;'" : '';
$html .= "';
}
return $html;
}
/**
* Walker for displaying checkboxes in treeformat
*
* @param $meta
* @param $field
* @param $elements
* @param int $parent
* @param bool $active
*
* @return string
*/
static function walk_checkbox_tree( $meta, $field, $elements, $parent = 0, $active = false )
{
if ( ! isset( $elements[$parent] ) )
return;
$terms = $elements[$parent];
$hidden = ( !$active ? 'hidden' : '' );
$html = "";
$li = '- ';
foreach ( $terms as $term )
{
$html .= sprintf(
$li,
$field['field_name'],
$term->slug,
checked( in_array( $term->slug, $meta ), true, false ),
$term->name
);
$html .= self::walk_checkbox_tree( $meta, $field, $elements, $term->term_id, ( in_array( $term->slug, $meta ) ) && $active ) . '
';
}
$html .= '
';
return $html;
}
/**
* Walker for displaying select in treeformat
*
* @param $meta
* @param $field
* @param $elements
* @param int $parent
* @param string $parent_slug
* @param bool $active
*
* @return string
*/
static function walk_select_tree( $meta, $field, $elements, $parent = 0, $parent_slug = '', $active = false )
{
if ( ! isset( $elements[$parent] ) )
return;
$terms = $elements[$parent];
$hidden = $active ? 'active' : 'disabled';
$disabled = disabled( $active, false, false );
$multiple = $field['multiple'] ? " multiple='multiple' style='height: auto;'" : '';
$id = empty( $parent_slug ) ? '' : " id='anim8-taxonomy-{$parent_slug}'";
$html = "";
$html .= "';
foreach ( $terms as $term )
{
$html .= self::walk_select_tree( $meta, $field, $elements, $term->term_id, $term->slug, in_array( $term->slug, $meta ) && $active ) . '';
}
$html .= '';
return $html;
}
/**
* Processes terms into indexed array for walker functions
*
* @param $terms
*
* @internal param $field
* @return array
*/
static function process_terms( $terms )
{
$elements = array();
foreach ( $terms as $term )
{
$elements[$term->parent][] = $term;
}
return $elements;
}
/**
* Save post taxonomy
*
* @param $post_id
* @param $field
* @param $old
*
* @param $new
*/
static function save( $new, $old, $post_id, $field )
{
wp_set_object_terms( $post_id, $new, $field['options']['taxonomy'] );
}
/**
* Standard meta retrieval
*
* @param mixed $meta
* @param int $post_id
* @param array $field
* @param bool $saved
*
* @return mixed
*/
static function meta( $meta, $post_id, $saved, $field )
{
$options = $field['options'];
$meta = wp_get_post_terms( $post_id, $options['taxonomy'] );
$meta = is_array( $meta ) ? $meta : (array) $meta;
$meta = wp_list_pluck( $meta, 'slug' );
return $meta;
}
}
}