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<?php
/**
** A base module for [select] and [select*]
**/

/* Shortcode handler */

add_action( 'init', 'wpcf7_add_shortcode_select', 5 );

function wpcf7_add_shortcode_select() {
	wpcf7_add_shortcode( array( 'select', 'select*' ),
		'wpcf7_select_shortcode_handler', true );
}

function wpcf7_select_shortcode_handler( $tag ) {
	$tag = new WPCF7_Shortcode( $tag );

if ( empty( $tag->name ) )
		return '';

$validation_error = wpcf7_get_validation_error( $tag->name );

$class = wpcf7_form_controls_class( $tag->type );

if ( $validation_error )
		$class .= ' wpcf7-not-valid';

$atts = array();

$atts['class'] = $tag->get_class_option( $class );
	$atts['id'] = $tag->get_option( 'id', 'id', true );
	$atts['tabindex'] = $tag->get_option( 'tabindex', 'int', true );

if ( $tag->is_required() )
		$atts['aria-required'] = 'true';

$defaults = array();

if ( $matches = $tag->get_first_match_option( '/^default:([0-9_]+)$/' ) )
		$defaults = explode( '_', $matches[1] );

$multiple = $tag->has_option( 'multiple' );
	$include_blank = $tag->has_option( 'include_blank' );

$name = $tag->name;
	$values = $tag->values;
	$labels = $tag->labels;

$empty_select = empty( $values );

if ( $empty_select || $include_blank ) {
		array_unshift( $labels, '---' );
		array_unshift( $values, '' );
	}

$html = '';

$posted = wpcf7_is_posted();

foreach ( $values as $key => $value ) {
		$selected = false;

if ( $posted && ! empty( $_POST[$name] ) ) {
			if ( $multiple && in_array( esc_sql( $value ), (array) $_POST[$name] ) )
				$selected = true;
			if ( ! $multiple && $_POST[$name] == esc_sql( $value ) )
				$selected = true;
		} else {
			if ( ! $empty_select && in_array( $key + 1, (array) $defaults ) )
				$selected = true;
		}

$item_atts = array(
			'value' => $value,
			'selected' => $selected ? 'selected' : '' );

$item_atts = wpcf7_format_atts( $item_atts );

$label = isset( $labels[$key] ) ? $labels[$key] : $value;

$html .= sprintf( '<option %1$s>%2$s</option>',
			$item_atts, esc_html( $label ) );
	}

if ( $multiple )
		$atts['multiple'] = 'multiple';

$atts['name'] = $tag->name . ( $multiple ? '[]' : '' );

$atts = wpcf7_format_atts( $atts );

$html = sprintf(

'<select %2$s>%3$s</select>%4$s',
		$tag->name, $atts, $html, $validation_error );

return $html;
}

/* Validation filter */

add_filter( 'wpcf7_validate_select', 'wpcf7_select_validation_filter', 10, 2 );
add_filter( 'wpcf7_validate_select*', 'wpcf7_select_validation_filter', 10, 2 );

function wpcf7_select_validation_filter( $result, $tag ) {
	$tag = new WPCF7_Shortcode( $tag );

$name = $tag->name;

if ( isset( $_POST[$name] ) && is_array( $_POST[$name] ) ) {
		foreach ( $_POST[$name] as $key => $value ) {
			if ( '' === $value )
				unset( $_POST[$name][$key] );
		}
	}

if ( $tag->is_required() ) {
		if ( ! isset( $_POST[$name] )
		|| empty( $_POST[$name] ) && '0' !== $_POST[$name] ) {
			$result['valid'] = false;
			$result['reason'][$name] = wpcf7_get_message( 'invalid_required' );
		}
	}

return $result;
}

/* Tag generator */

add_action( 'admin_init', 'wpcf7_add_tag_generator_menu', 25 );

function wpcf7_add_tag_generator_menu() {
	if ( ! function_exists( 'wpcf7_add_tag_generator' ) )
		return;

wpcf7_add_tag_generator( 'menu', __( 'Drop-down menu', 'wpcf7' ),
		'wpcf7-tg-pane-menu', 'wpcf7_tg_pane_menu' );
}

function wpcf7_tg_pane_menu( &$contact_form ) {
?>
<div id="wpcf7-tg-pane-menu" class="hidden">
<form action="">
<table>
<tr><td><input type="checkbox" name="required" />&nbsp;<?php echo esc_html( __( 'Required field?', 'wpcf7' ) ); ?></td></tr>
<tr><td><?php echo esc_html( __( 'Name', 'wpcf7' ) ); ?><br /><input type="text" name="name" class="tg-name oneline" /></td><td></td></tr>
</table>

<td><code>class</code> (<?php echo esc_html( __( 'optional', 'wpcf7' ) ); ?>)<br />
<input type="text" name="class" class="classvalue oneline option" /></td>
</tr>

<div class="tg-mail-tag"><?php echo esc_html( __( "And, put this code into the Mail fields below.", 'wpcf7' ) ); ?><br /><span class="arrow">&#11015;</span>&nbsp;<input type="text" class="mail-tag" readonly="readonly" onfocus="this.select()" /></div>
</form>
</div>
<?php
}