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Edit File: class.form-field.php

<?php
/**
 * @package mw-wp-form
 * @author websoudan
 * @license GPL-2.0+
 */

/**
 * MW_WP_Form_Abstract_Form_Field
 */
abstract class MW_WP_Form_Abstract_Form_Field {

/**
	 * Shortcode name.
	 *
	 * @var string
	 */
	protected $shortcode_name;

/**
	 * Display name.
	 *
	 * @var string
	 */
	protected $display_name;

/**
	 * @var MW_WP_Form_Form
	 */
	protected $Form;

/**
	 * @var MW_WP_Form_Data
	 */
	protected $Data;

/**
	 * Default attributes.
	 *
	 * @var array
	 */
	protected $defaults = array();

/**
	 * Attirbutes of shortcode.
	 *
	 * @var array
	 */
	protected $atts = array();

/**
	 * Form key.
	 *
	 * @var string
	 */
	protected $form_key;

/**
	 * Types of form type.
	 * input|select|button|input_button|error|other.
	 *
	 * @var string
	 */
	protected $type = 'other';

/**
	 * Content of shortcode.
	 *
	 * @var string
	 */
	protected $element_content = null;

/**
	 * Constructor.
	 */
	public function __construct() {
		$this->_set_names();
		$this->_set_defaults();
		add_filter( 'mwform_form_fields', array( $this, '_mwform_form_fields' ) );
		add_filter( 'mwform_tag_generator_group', array( $this, '_mwform_tag_generator_group' ) );
	}

/**
	 * Add form field shortcodes.
	 *
	 * @param MW_WP_Form_Form $Form     MW_WP_Form_Form object.
	 * @param string          $form_key Form key.
	 * @param string          $view_flg View flg.
	 * @return boolean
	 */
	public function initialize( MW_WP_Form_Form $Form, $form_key, $view_flg ) {
		if ( empty( $this->shortcode_name ) ) {
			return false;
		}

$this->Form     = $Form;
		$this->form_key = $form_key;
		$this->Data     = MW_WP_Form_Data::connect( $form_key );

switch ( $view_flg ) {
			case 'input':
				add_shortcode( $this->shortcode_name, array( $this, '_input_page' ) );
				break;
			case 'confirm':
				add_shortcode( $this->shortcode_name, array( $this, '_confirm_page' ) );
				break;
			case 'complete':
				break;
			default:
				exit( '$view_flg is not right value. $view_flg is ' . $view_flg . ' now.' );
		}

return true;
	}

/**
	 * Set shortcode_name and display_name.
	 * Overwrite required for each child class.
	 *
	 * @return array
	 */
	abstract protected function set_names();

/**
	 * Set shortcode_name and display_name.
	 * Overwrite required for each child class.
	 */
	private function _set_names() {
		$args = $this->set_names();

if ( empty( $args['shortcode_name'] ) || empty( $args['display_name'] ) ) {
			exit( get_class() . '::set_names() returns not right values. Returned values is ' . serialize( $args ) . ' now.' );
		}

$this->shortcode_name = $args['shortcode_name'];
		$this->display_name   = $args['display_name'];
	}

/**
	 * Set default attributes.
	 *
	 * @return array
	 */
	abstract protected function set_defaults();

/**
	 * Set default attributes.
	 */
	private function _set_defaults() {
		$this->defaults = $this->set_defaults();
	}

/**
	 * Return HTML of error message.
	 *
	 * @param  string $name Field name.
	 * @return string
	 */
	protected function get_error( $name ) {
		if ( ! is_array( $this->Data->get_validation_error( $name ) ) ) {
			return;
		}

$error_html = '';
		$start_tag  = '<span class="error">';
		$end_tag    = '</span>';
		foreach ( $this->Data->get_validation_error( $name ) as $rule => $error ) {
			$rule  = strtolower( $rule );
			$error = apply_filters(
				'mwform_error_message_' . $this->form_key,
				$error,
				$name,
				$rule
			);

$error_html .= apply_filters(
				'mwform_error_message_html',
				$start_tag . esc_html( $error ) . $end_tag,
				$error,
				$start_tag,
				$end_tag,
				$this->form_key,
				$name,
				$rule
			);
		}

if ( $error_html ) {
			return apply_filters( 'mwform_error_message_wrapper', $error_html, $this->form_key );
		}
	}

/**
	 * Callback of add shortcode for input page.
	 *
	 * @return string
	 */
	abstract protected function input_page();

/**
	 * Callback of add shortcode for input page.
	 *
	 * @param array  $atts            Attributes of shortcode.
	 * @param string $element_content Content of shortcode.
	 * @return string
	 */
	public function _input_page( $atts, $element_content = null ) {
		$this->element_content = $element_content;

if ( array_key_exists( 'value', $this->defaults ) && isset( $atts['name'] ) && ! isset( $atts['value'] ) ) {
			$atts['value'] = apply_filters(
				'mwform_value_' . $this->form_key,
				$this->defaults['value'],
				$atts['name']
			);
		}
		$this->atts = shortcode_atts( $this->defaults, $atts );

return $this->input_page();
	}

/**
	 * Callback of add shortcode for confirm page.
	 *
	 * @return string
	 */
	abstract protected function confirm_page();

/**
	 * Callback of add shortcode for confirm page.
	 *
	 * @param array  $atts            Attributes of shortcode.
	 * @param string $element_content Content of shortcode.
	 * @return string
	 */
	public function _confirm_page( $atts, $element_content = null ) {
		$this->element_content = $element_content;
		$this->atts            = shortcode_atts( $this->defaults, $atts );

return $this->confirm_page();
	}

/**
	 * Return array for children of select, checkbox and radio.
	 * If including ":", Split and use the before as the name and the after as the label.
	 *
	 * @param string|array $_children Children.
	 * @return array
	 */
	public function get_children( $_children ) {
		$children = array();
		if ( ! empty( $_children ) && ! is_array( $_children ) ) {
			$_children = explode( ',', $_children );
		}

if ( is_array( $_children ) ) {
			foreach ( $_children as $child ) {
				$temp_replacement = '@-[_-_]-@';
				if ( preg_match( '/(^:[^:])|([^:]:[^:])/', $child ) ) {
					$child = str_replace( '::', $temp_replacement, $child );
					$child = explode( ':', $child, 2 );
				} else {
					$child = str_replace( '::', $temp_replacement, $child );
					$child = array( $child );
				}
				foreach ( $child as $child_key => $child_value ) {
					$child[ $child_key ] = str_replace( $temp_replacement, ':', $child_value );
				}
				if ( count( $child ) === 1 ) {
					$children[ $child[0] ] = $child[0];
				} else {
					$children[ $child[0] ] = $child[1];
				}
			}
		}

if ( $this->form_key ) {
			$children = apply_filters( 'mwform_choices_' . $this->form_key, $children, $this->atts );
		}

return $children;
	}

/**
	 * Generate tag generator.
	 */
	public function add_tag_generator() {
		add_action( 'mwform_tag_generator_dialog', array( $this, '_mwform_tag_generator_dialog' ) );

if ( 'other' !== $this->type ) {
			$tag = 'mwform_tag_generator_' . $this->type . '_option';
		} else {
			$tag = 'mwform_tag_generator_option';
		}

add_action( $tag, array( $this, '_mwform_tag_generator_option' ) );
	}

/**
	 * Display tag generator wrapper.
	 */
	public function _mwform_tag_generator_dialog() {
		?>
		<div id="dialog-<?php echo esc_attr( $this->shortcode_name ); ?>" class="mwform-dialog" title="<?php echo esc_attr( $this->shortcode_name ); ?>">
			<div class="form">
				<?php $this->mwform_tag_generator_dialog( $this->defaults ); ?>
			</div>
		</div>
		<?php
	}

/**
	 * Display tag generator dialog.
	 * Overwrite required for each child class.
	 */
	public function mwform_tag_generator_dialog() {
	}

/**
	 * Display tag generator selectbox.
	 */
	public function _mwform_tag_generator_option() {
		?>
		<option value="<?php echo esc_attr( $this->shortcode_name ); ?>"><?php echo esc_html( $this->display_name ); ?></option>
		<?php
	}

/**
	 * Generate array of form fields.
	 *
	 * @param array $form_fields Array of MW_WP_Form_Abstract_Form_Field.
	 * @return array
	 */
	public function _mwform_form_fields( array $form_fields ) {
		return array_merge( $form_fields, array( $this->shortcode_name => $this ) );
	}

/**
	 * Add tag generator group.
	 *
	 * @param array $group Tag generator group.
	 * @return array
	 */
	public function _mwform_tag_generator_group( $group ) {
		$group[ $this->type ] = $this->type;
		return $group;
	}

/**
	 * Return display name.
	 *
	 * @return string
	 */
	public function get_display_name() {
		return $this->display_name;
	}

/**
	 * Return shortcode name.
	 *
	 * @return string
	 */
	public function get_shortcode_name() {
		return $this->shortcode_name;
	}

/**
	 * Return value for setting field of Tag generator dialog.
	 *
	 * @param string $key     Attribute name.
	 * @param array  $options Options.
	 * @return string
	 */
	public function get_value_for_generator( $key, $options ) {
		$attributes = array_keys( $this->defaults );
		$attributes = array_flip( $attributes );

if ( ! isset( $attributes[ $key ] ) ) {
			return;
		}

if ( isset( $options[ $key ] ) ) {
			return $options[ $key ];
		} else {
			return '';
		}
	}
}