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<?php
/**
** A base module for the following types of tags:
** 	[number] and [number*]		# Number
** 	[range] and [range*]		# Range
**/

/* Shortcode handler */

add_action( 'init', 'wpcf7_add_shortcode_number', 5 );

function wpcf7_add_shortcode_number() {
	wpcf7_add_shortcode( array( 'number', 'number*', 'range', 'range*' ),
		'wpcf7_number_shortcode_handler', true );
}

function wpcf7_number_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 );

$class .= ' wpcf7-validates-as-number';

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 );
	$atts['min'] = $tag->get_option( 'min', 'signed_int', true );
	$atts['max'] = $tag->get_option( 'max', 'signed_int', true );
	$atts['step'] = $tag->get_option( 'step', 'int', true );

if ( $tag->has_option( 'readonly' ) )
		$atts['readonly'] = 'readonly';

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

$value = (string) reset( $tag->values );

if ( $tag->has_option( 'placeholder' ) || $tag->has_option( 'watermark' ) ) {
		$atts['placeholder'] = $value;
		$value = '';
	}

if ( wpcf7_is_posted() && isset( $_POST[$tag->name] ) )
		$value = stripslashes_deep( $_POST[$tag->name] );

$atts['value'] = $value;

if ( wpcf7_support_html5() ) {
		$atts['type'] = $tag->basetype;
	} else {
		$atts['type'] = 'text';
	}

$atts['name'] = $tag->name;

$atts = wpcf7_format_atts( $atts );

$html = sprintf(
		'<input %2$s />%3$s',
		$tag->name, $atts, $validation_error );

return $html;
}

/* Validation filter */

add_filter( 'wpcf7_validate_number', 'wpcf7_number_validation_filter', 10, 2 );
add_filter( 'wpcf7_validate_number*', 'wpcf7_number_validation_filter', 10, 2 );
add_filter( 'wpcf7_validate_range', 'wpcf7_number_validation_filter', 10, 2 );
add_filter( 'wpcf7_validate_range*', 'wpcf7_number_validation_filter', 10, 2 );

function wpcf7_number_validation_filter( $result, $tag ) {
	$tag = new WPCF7_Shortcode( $tag );

$name = $tag->name;

$value = isset( $_POST[$name] )
		? trim( strtr( (string) $_POST[$name], "\n", " " ) )
		: '';

$min = $tag->get_option( 'min', 'signed_int', true );
	$max = $tag->get_option( 'max', 'signed_int', true );

if ( $tag->is_required() && '' == $value ) {
		$result['valid'] = false;
		$result['reason'][$name] = wpcf7_get_message( 'invalid_required' );
	} elseif ( '' != $value && ! wpcf7_is_number( $value ) ) {
		$result['valid'] = false;
		$result['reason'][$name] = wpcf7_get_message( 'invalid_number' );
	} elseif ( '' != $value && '' != $min && (float) $value < (float) $min ) {
		$result['valid'] = false;
		$result['reason'][$name] = wpcf7_get_message( 'number_too_small' );
	} elseif ( '' != $value && '' != $max && (float) $max < (float) $value ) {
		$result['valid'] = false;
		$result['reason'][$name] = wpcf7_get_message( 'number_too_large' );
	}

return $result;
}

/* Messages */

add_filter( 'wpcf7_messages', 'wpcf7_number_messages' );

function wpcf7_number_messages( $messages ) {
	return array_merge( $messages, array(
		'invalid_number' => array(
			'description' => __( "Number format that the sender entered is invalid", 'wpcf7' ),
			'default' => __( 'Number format seems invalid.', 'wpcf7' )
		),

'number_too_small' => array(
			'description' => __( "Number is smaller than minimum limit", 'wpcf7' ),
			'default' => __( 'This number is too small.', 'wpcf7' )
		),

'number_too_large' => array(
			'description' => __( "Number is larger than maximum limit", 'wpcf7' ),
			'default' => __( 'This number is too large.', 'wpcf7' )
		) ) );
}

/* Tag generator */

add_action( 'admin_init', 'wpcf7_add_tag_generator_number', 18 );

function wpcf7_add_tag_generator_number() {
	if ( ! function_exists( 'wpcf7_add_tag_generator' ) )
		return;

wpcf7_add_tag_generator( 'number', __( 'Number (spinbox)', 'wpcf7' ),
		'wpcf7-tg-pane-number', 'wpcf7_tg_pane_number' );

wpcf7_add_tag_generator( 'range', __( 'Number (slider)', 'wpcf7' ),
		'wpcf7-tg-pane-range', 'wpcf7_tg_pane_range' );
}

function wpcf7_tg_pane_number( &$contact_form ) {
	wpcf7_tg_pane_number_and_relatives( 'number' );
}

function wpcf7_tg_pane_range( &$contact_form ) {
	wpcf7_tg_pane_number_and_relatives( 'range' );
}

function wpcf7_tg_pane_number_and_relatives( $type = 'number' ) {
	if ( ! in_array( $type, array( 'range' ) ) )
		$type = 'number';

?>
<div id="wpcf7-tg-pane-<?php echo $type; ?>" 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-tag"><?php echo esc_html( __( "Copy this code and paste it into the form left.", 'wpcf7' ) ); ?><br /><input type="text" name="<?php echo $type; ?>" class="tag" readonly="readonly" onfocus="this.select()" /></div>

<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
}