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<?php

class WPCF7_Validation implements ArrayAccess
{
    private $invalid_fields = array();
    private $container = array();
    public function __construct()
    {
        $this->container = array('valid' => true, 'reason' => array(), 'idref' => array());
    }
    public function invalidate($context, $message)
    {
        if ($context instanceof WPCF7_FormTag) {
            $tag = $context;
        } elseif (is_array($context)) {
            $tag = new WPCF7_FormTag($context);
        } elseif (is_string($context)) {
            $tags = wpcf7_scan_form_tags(array('name' => trim($context)));
            $tag = $tags ? new WPCF7_FormTag($tags[0]) : null;
        }
        $name = !empty($tag) ? $tag->name : null;
        if (empty($name) or !wpcf7_is_name($name)) {
            return;
        }
        if ($this->is_valid($name)) {
            $id = $tag->get_id_option();
            if (empty($id) or !wpcf7_is_name($id)) {
                $id = null;
            }
            $this->invalid_fields[$name] = array('reason' => (string) $message, 'idref' => $id);
        }
    }
    public function is_valid($name = null)
    {
        if (!empty($name)) {
            return !isset($this->invalid_fields[$name]);
        } else {
            return empty($this->invalid_fields);
        }
    }
    public function get_invalid_fields()
    {
        return $this->invalid_fields;
    }
    public function offsetSet($offset, $value)
    {
        if (isset($this->container[$offset])) {
            $this->container[$offset] = $value;
        }
        if ('reason' == $offset and is_array($value)) {
            foreach ($value as $k => $v) {
                $this->invalidate($k, $v);
            }
        }
    }
    public function offsetGet($offset)
    {
        if (isset($this->container[$offset])) {
            return $this->container[$offset];
        }
    }
    public function offsetExists($offset)
    {
        return isset($this->container[$offset]);
    }
    public function offsetUnset($offset)
    {
    }
}