<?php

/**

 * Smarty plugin

 *

 * @package    Smarty

 * @subpackage PluginsFunction

 */

/**

 * Smarty {html_options} function plugin

 * Type:     function<br>

 * Name:     html_options<br>

 * Purpose:  Prints the list of <option> tags generated from

 *           the passed parameters<br>

 * Params:

 * <pre>

 * - name       (optional) - string default "select"

 * - values     (required) - if no options supplied) - array

 * - options    (required) - if no values supplied) - associative array

 * - selected   (optional) - string default not set

 * - output     (required) - if not options supplied) - array

 * - id         (optional) - string default not set

 * - class      (optional) - string default not set

 * </pre>

 *

 * @link     http://www.smarty.net/manual/en/language.function.html.options.php {html_image}

 *           (Smarty online manual)

 * @author   Monte Ohrt <monte at ohrt dot com>

 * @author   Ralf Strehle (minor optimization) <ralf dot strehle at yahoo dot de>

 *

 * @param array $params parameters

 *

 * @return string

 * @uses     smarty_function_escape_special_chars()

 */

function smarty_function_html_options($params) {

    require_once(SMARTY_PLUGINS_DIR . 'shared.escape_special_chars.php');

    $name = null;

    $values = null;

    $options = null;

    $selected = null;

    $output = null;

    $id = null;

    $class = null;

    $extra = '';

    foreach ($params as $_key => $_val) {

        switch ($_key) {

            case 'name':

            case 'class':

            case 'id':

                $$_key = (string)$_val;

                break;

            case 'options':

                $options = (array)$_val;

                break;

            case 'values':

            case 'output':

                $$_key = array_values((array)$_val);

                break;

            case 'selected':

                if (is_array($_val)) {

                    $selected = array();

                    foreach ($_val as $_sel) {

                        if (is_object($_sel)) {

                            if (method_exists($_sel, "__toString")) {

                                $_sel = smarty_function_escape_special_chars((string)$_sel->__toString());

                            } else {

                                trigger_error("html_options: selected attribute contains an object of class '" . get_class($_sel) . "' without __toString() method", E_USER_NOTICE);

                                continue;

                            }

                        } else {

                            $_sel = smarty_function_escape_special_chars((string)$_sel);

                        }

                        $selected[$_sel] = true;

                    }

                } elseif (is_object($_val)) {

                    if (method_exists($_val, "__toString")) {

                        $selected = smarty_function_escape_special_chars((string)$_val->__toString());

                    } else {

                        trigger_error("html_options: selected attribute is an object of class '" . get_class($_val) . "' without __toString() method", E_USER_NOTICE);

                    }

                } else {

                    $selected = smarty_function_escape_special_chars((string)$_val);

                }

                break;

            case 'strict':

                break;

            case 'disabled':

            case 'readonly':

                if (!empty($params['strict'])) {

                    if (!is_scalar($_val)) {

                        trigger_error("html_options: $_key attribute must be a scalar, only boolean true or string '$_key' will actually add the attribute", E_USER_NOTICE);

                    }

                    if ($_val === true || $_val === $_key) {

                        $extra .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_key) . '"';

                    }

                    break;

                }

            // omit break; to fall through!

            default:

                if (!is_array($_val)) {

                    $extra .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_val) . '"';

                } else {

                    trigger_error("html_options: extra attribute '$_key' cannot be an array", E_USER_NOTICE);

                }

                break;

        }

    }

    if (!isset($options) && !isset($values)) {

        /* raise error here? */

        return '';

    }

    $_html_result = '';

    $_idx = 0;

    if (isset($options)) {

        foreach ($options as $_key => $_val) {

            $_html_result .= smarty_function_html_options_optoutput($_key, $_val, $selected, $id, $class, $_idx);

        }

    } else {

        foreach ($values as $_i => $_key) {

            $_val = isset($output[$_i]) ? $output[$_i] : '';

            $_html_result .= smarty_function_html_options_optoutput($_key, $_val, $selected, $id, $class, $_idx);

        }

    }

    if (!empty($name)) {

        $_html_class = !empty($class) ? ' class="' . $class . '"' : '';

        $_html_id = !empty($id) ? ' id="' . $id . '"' : '';

        $_html_result = '<select name="' . $name . '"' . $_html_class . $_html_id . $extra . '>' . "\n" . $_html_result . '</select>' . "\n";

    }

    return $_html_result;

}

function smarty_function_html_options_optoutput($key, $value, $selected, $id, $class, &$idx) {

    if (!is_array($value)) {

        $_key = smarty_function_escape_special_chars($key);

        $_html_result = '<option value="' . $_key . '"';

        if (is_array($selected)) {

            if (isset($selected[$_key])) {

                $_html_result .= ' selected="selected"';

            }

        } elseif ($_key === $selected) {

            $_html_result .= ' selected="selected"';

        }

        $_html_class = !empty($class) ? ' class="' . $class . ' option"' : '';

        $_html_id = !empty($id) ? ' id="' . $id . '-' . $idx . '"' : '';

        if (is_object($value)) {

            if (method_exists($value, "__toString")) {

                $value = smarty_function_escape_special_chars((string)$value->__toString());

            } else {

                trigger_error("html_options: value is an object of class '" . get_class($value) . "' without __toString() method", E_USER_NOTICE);

                return '';

            }

        } else {

            $value = smarty_function_escape_special_chars((string)$value);

        }

        $_html_result .= $_html_class . $_html_id . '>' . $value . '</option>' . "\n";

        $idx++;

    } else {

        $_idx = 0;

        $_html_result = smarty_function_html_options_optgroup($key, $value, $selected, !empty($id) ? ($id . '-' . $idx) : null, $class, $_idx);

        $idx++;

    }

    return $_html_result;

}

function smarty_function_html_options_optgroup($key, $values, $selected, $id, $class, &$idx) {

    $optgroup_html = '<optgroup label="' . smarty_function_escape_special_chars($key) . '">' . "\n";

    foreach ($values as $key => $value) {

        $optgroup_html .= smarty_function_html_options_optoutput($key, $value, $selected, $id, $class, $idx);

    }

    $optgroup_html .= "</optgroup>\n";

    return $optgroup_html;

}