<?php

add_action('wpcf7_init', 'wpcf7_add_form_tag_checkbox', 10, 0);
function wpcf7_add_form_tag_checkbox()
{
    wpcf7_add_form_tag(array('checkbox', 'checkbox*', 'radio'), 'wpcf7_checkbox_form_tag_handler', array('name-attr' => true, 'selectable-values' => true, 'multiple-controls-container' => true));
}
function wpcf7_checkbox_form_tag_handler($tag)
{
    if (empty($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';
    }
    $label_first = $tag->has_option('label_first');
    $use_label_element = $tag->has_option('use_label_element');
    $exclusive = $tag->has_option('exclusive');
    $free_text = $tag->has_option('free_text');
    $multiple = false;
    if ('checkbox' == $tag->basetype) {
        $multiple = !$exclusive;
    } else {
        $exclusive = false;
    }
    if ($exclusive) {
        $class .= ' wpcf7-exclusive-checkbox';
    }
    $atts = array();
    $atts['class'] = $tag->get_class_option($class);
    $atts['id'] = $tag->get_id_option();
    if ($validation_error) {
        $atts['aria-describedby'] = wpcf7_get_validation_error_reference($tag->name);
    }
    $tabindex = $tag->get_option('tabindex', 'signed_int', true);
    if (false !== $tabindex) {
        $tabindex = (int) $tabindex;
    }
    $html = '';
    $count = 0;
    if ($data = (array) $tag->get_data_option()) {
        if ($free_text) {
            $tag->values = array_merge(array_slice($tag->values, 0, -1), array_values($data), array_slice($tag->values, -1));
            $tag->labels = array_merge(array_slice($tag->labels, 0, -1), array_values($data), array_slice($tag->labels, -1));
        } else {
            $tag->values = array_merge($tag->values, array_values($data));
            $tag->labels = array_merge($tag->labels, array_values($data));
        }
    }
    $values = $tag->values;
    $labels = $tag->labels;
    $default_choice = $tag->get_default_option(null, array('multiple' => $multiple));
    $hangover = wpcf7_get_hangover($tag->name, $multiple ? array() : '');
    foreach ($values as $key => $value) {
        if ($hangover) {
            $checked = in_array($value, (array) $hangover, true);
        } else {
            $checked = in_array($value, (array) $default_choice, true);
        }
        if (isset($labels[$key])) {
            $label = $labels[$key];
        } else {
            $label = $value;
        }
        $item_atts = array('type' => $tag->basetype, 'name' => $tag->name . ($multiple ? '[]' : ''), 'value' => $value, 'checked' => $checked ? 'checked' : '', 'tabindex' => false !== $tabindex ? $tabindex : '');
        $item_atts = wpcf7_format_atts($item_atts);
        if ($label_first) {
            $item = sprintf('<span class="wpcf7-list-item-label">%1$s</span><input %2$s />', esc_html($label), $item_atts);
        } else {
            $item = sprintf('<input %2$s /><span class="wpcf7-list-item-label">%1$s</span>', esc_html($label), $item_atts);
        }
        if ($use_label_element) {
            $item = '<label>' . $item . '</label>';
        }
        if (false !== $tabindex and 0 < $tabindex) {
            $tabindex += 1;
        }
        $class = 'wpcf7-list-item';
        $count += 1;
        if (1 == $count) {
            $class .= ' first';
        }
        if (count($values) == $count) {
            $class .= ' last';
            if ($free_text) {
                $free_text_name = $tag->name . '_free_text';
                $free_text_atts = array('name' => $free_text_name, 'class' => 'wpcf7-free-text', 'tabindex' => false !== $tabindex ? $tabindex : '');
                if (wpcf7_is_posted() and isset($_POST[$free_text_name])) {
                    $free_text_atts['value'] = wp_unslash($_POST[$free_text_name]);
                }
                $free_text_atts = wpcf7_format_atts($free_text_atts);
                $item .= sprintf(' <input type="text" %s />', $free_text_atts);
                $class .= ' has-free-text';
            }
        }
        $item = '<span class="' . esc_attr($class) . '">' . $item . '</span>';
        $html .= $item;
    }
    $atts = wpcf7_format_atts($atts);
    $html = sprintf('<span class="wpcf7-form-control-wrap %1$s"><span %2$s>%3$s</span>%4$s</span>', sanitize_html_class($tag->name), $atts, $html, $validation_error);
    return $html;
}
add_filter('wpcf7_validate_checkbox', 'wpcf7_checkbox_validation_filter', 10, 2);
add_filter('wpcf7_validate_checkbox*', 'wpcf7_checkbox_validation_filter', 10, 2);
add_filter('wpcf7_validate_radio', 'wpcf7_checkbox_validation_filter', 10, 2);
function wpcf7_checkbox_validation_filter($result, $tag)
{
    $name = $tag->name;
    $is_required = $tag->is_required() || 'radio' == $tag->type;
    $value = isset($_POST[$name]) ? (array) $_POST[$name] : array();
    if ($is_required and empty($value)) {
        $result->invalidate($tag, wpcf7_get_message('invalid_required'));
    }
    return $result;
}
add_action('wpcf7_admin_init', 'wpcf7_add_tag_generator_checkbox_and_radio', 30, 0);
function wpcf7_add_tag_generator_checkbox_and_radio()
{
    $tag_generator = WPCF7_TagGenerator::get_instance();
    $tag_generator->add('checkbox', __('checkboxes', 'contact-form-7'), 'wpcf7_tag_generator_checkbox');
    $tag_generator->add('radio', __('radio buttons', 'contact-form-7'), 'wpcf7_tag_generator_checkbox');
}
function wpcf7_tag_generator_checkbox($contact_form, $args = '')
{
    $args = wp_parse_args($args, array());
    $type = $args['id'];
    if ('radio' != $type) {
        $type = 'checkbox';
    }
    if ('checkbox' == $type) {
        $description = __("Generate a form-tag for a group of checkboxes. For more details, see %s.", 'contact-form-7');
    } elseif ('radio' == $type) {
        $description = __("Generate a form-tag for a group of radio buttons. For more details, see %s.", 'contact-form-7');
    }
    $desc_link = wpcf7_link(__('https://contactform7.com/checkboxes-radio-buttons-and-menus/', 'contact-form-7'), __('Checkboxes, radio buttons and menus', 'contact-form-7'));
    ?>
<div class="control-box">
<fieldset>
<legend><?php 
    echo sprintf(esc_html($description), $desc_link);
    ?></legend>

<table class="form-table">
<tbody>
<?php 
    if ('checkbox' == $type) {
        ?>
	<tr>
	<th scope="row"><?php 
        echo esc_html(__('Field type', 'contact-form-7'));
        ?></th>
	<td>
		<fieldset>
		<legend class="screen-reader-text"><?php 
        echo esc_html(__('Field type', 'contact-form-7'));
        ?></legend>
		<label><input type="checkbox" name="required" /> <?php 
        echo esc_html(__('Required field', 'contact-form-7'));
        ?></label>
		</fieldset>
	</td>
	</tr>
<?php 
    }
    ?>

	<tr>
	<th scope="row"><label for="<?php 
    echo esc_attr($args['content'] . '-name');
    ?>"><?php 
    echo esc_html(__('Name', 'contact-form-7'));
    ?></label></th>
	<td><input type="text" name="name" class="tg-name oneline" id="<?php 
    echo esc_attr($args['content'] . '-name');
    ?>" /></td>
	</tr>

	<tr>
	<th scope="row"><?php 
    echo esc_html(__('Options', 'contact-form-7'));
    ?></th>
	<td>
		<fieldset>
		<legend class="screen-reader-text"><?php 
    echo esc_html(__('Options', 'contact-form-7'));
    ?></legend>
		<textarea name="values" class="values" id="<?php 
    echo esc_attr($args['content'] . '-values');
    ?>"></textarea>
		<label for="<?php 
    echo esc_attr($args['content'] . '-values');
    ?>"><span class="description"><?php 
    echo esc_html(__("One option per line.", 'contact-form-7'));
    ?></span></label><br />
		<label><input type="checkbox" name="label_first" class="option" /> <?php 
    echo esc_html(__('Put a label first, a checkbox last', 'contact-form-7'));
    ?></label><br />
		<label><input type="checkbox" name="use_label_element" class="option" checked="checked" /> <?php 
    echo esc_html(__('Wrap each item with label element', 'contact-form-7'));
    ?></label>
<?php 
    if ('checkbox' == $type) {
        ?>
		<br /><label><input type="checkbox" name="exclusive" class="option" /> <?php 
        echo esc_html(__('Make checkboxes exclusive', 'contact-form-7'));
        ?></label>
<?php 
    }
    ?>
		</fieldset>
	</td>
	</tr>

	<tr>
	<th scope="row"><label for="<?php 
    echo esc_attr($args['content'] . '-id');
    ?>"><?php 
    echo esc_html(__('Id attribute', 'contact-form-7'));
    ?></label></th>
	<td><input type="text" name="id" class="idvalue oneline option" id="<?php 
    echo esc_attr($args['content'] . '-id');
    ?>" /></td>
	</tr>

	<tr>
	<th scope="row"><label for="<?php 
    echo esc_attr($args['content'] . '-class');
    ?>"><?php 
    echo esc_html(__('Class attribute', 'contact-form-7'));
    ?></label></th>
	<td><input type="text" name="class" class="classvalue oneline option" id="<?php 
    echo esc_attr($args['content'] . '-class');
    ?>" /></td>
	</tr>

</tbody>
</table>
</fieldset>
</div>

<div class="insert-box">
	<input type="text" name="<?php 
    echo $type;
    ?>" class="tag code" readonly="readonly" onfocus="this.select()" />

	<div class="submitbox">
	<input type="button" class="button button-primary insert-tag" value="<?php 
    echo esc_attr(__('Insert Tag', 'contact-form-7'));
    ?>" />
	</div>

	<br class="clear" />

	<p class="description mail-tag"><label for="<?php 
    echo esc_attr($args['content'] . '-mailtag');
    ?>"><?php 
    echo sprintf(esc_html(__("To use the value input through this field in a mail field, you need to insert the corresponding mail-tag (%s) into the field on the Mail tab.", 'contact-form-7')), '<strong><span class="mail-tag"></span></strong>');
    ?><input type="text" class="mail-tag code hidden" readonly="readonly" id="<?php 
    echo esc_attr($args['content'] . '-mailtag');
    ?>" /></label></p>
</div>
<?php 
}