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<?php
/**
* Add row, column markup to a set of fields in one row.
*
* @package Meta Box
* @subpackage Meta Box Columns
*/
/**
* Row class.
*/
class MB_Columns_Row {
/**
* List of fields.
*
* @var array
*/
protected $fields;
/**
* Store the meta box's columns data.
*
* @var array
*/
protected $columns = array();
/**
* Store the total column of a row.
*
* @var int
*/
protected $total_columns;
/**
* Track current column.
*
* @var string
*/
protected $current_column = '';
/**
* Track current field.
*
* @var array
*/
protected $current_field;
/**
* Add hooks to meta box
*
* @param array $columns List of columns.
* @param array $fields List of fields.
*/
public function __construct( array $columns, $fields ) {
$this->columns = $columns;
$this->fields = $fields;
}
/**
* Process all fields to add column markup to each one.
*/
public function process() {
$index = 0;
$count = ( is_array( $this->fields ) || is_object( $this->fields ) ? count( $this->fields ) : 0 ) - 1;
foreach ( $this->fields as &$field ) {
if ( empty( $field['column'] ) ) {
continue;
}
$this->process_field( $field );
if ( $count === $index ) {
$this->process_last_field( $field );
}
if ( isset( $field['fields'] ) ) {
$row = new self( $this->columns, $field['fields'] );
$row->process();
$field['fields'] = $row->get_fields();
}
$this->current_column = $field['column'];
$this->current_field = &$field;
$index ++;
}
}
/**
* Get all processed fields.
*
* @return array
*/
public function get_fields() {
return $this->fields;
}
/**
* Process a field in the middle.
*
* @param array $field Field settings.
*/
public function process_field( &$field ) {
if ( ! $this->is_start_column( $field ) ) {
return;
}
$column = $this->columns[ $field['column'] ];
$before = '';
$after = '';
$after .= '</div><!-- .rwmb-column -->';
if ( $this->is_start_row( $field ) ) {
$after .= '</div><!-- .rwmb-row -->';
$before .= '<div class="rwmb-row">';
$this->total_columns = 0;
}
$before .= sprintf( '<div class="rwmb-column rwmb-column-%d %s">', absint( $column['size'] ), esc_attr( $column['class'] ) );
$this->total_columns += $column['size'];
if ( $this->current_field ) {
$this->current_field['after'] .= $after;
}
$field['before'] = $before . $field['before'];
}
/**
* Process the last field.
*
* @param array $field Field settings.
*/
protected function process_last_field( &$field ) {
$after = '</div><!-- .rwmb-column -->';
$after .= '</div><!-- .rwmb-row -->';
$field['after'] .= $after;
}
/**
* Check if this field starts a column.
*
* @param array $field Field settings.
*
* @return bool
*/
protected function is_start_column( $field ) {
return $field['column'] !== $this->current_column;
}
/**
* Check if this field starts a row.
*
* @param array $field Field settings.
*
* @return bool
*/
protected function is_start_row( $field ) {
return ! $this->current_column || $this->total_columns + $this->columns[ $field['column'] ]['size'] > 12;
}
}
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