library/smarty/libs/plugins/function.html_options.php
author Markus Broeker<broeker.markus@googlemail.com>
Sun, 14 Feb 2016 21:40:29 +0100
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<?php
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/**
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 * Smarty plugin
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 *
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 * @package    Smarty
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 * @subpackage PluginsFunction
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 */
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/**
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 * Smarty {html_options} function plugin
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 * Type:     function<br>
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 * Name:     html_options<br>
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 * Purpose:  Prints the list of <option> tags generated from
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 *           the passed parameters<br>
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 * Params:
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 * <pre>
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 * - name       (optional) - string default "select"
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 * - values     (required) - if no options supplied) - array
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 * - options    (required) - if no values supplied) - associative array
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 * - selected   (optional) - string default not set
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 * - output     (required) - if not options supplied) - array
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 * - id         (optional) - string default not set
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 * - class      (optional) - string default not set
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 * </pre>
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 *
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 * @link     http://www.smarty.net/manual/en/language.function.html.options.php {html_image}
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 *           (Smarty online manual)
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 * @author   Monte Ohrt <monte at ohrt dot com>
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 * @author   Ralf Strehle (minor optimization) <ralf dot strehle at yahoo dot de>
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 *
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 * @param array $params parameters
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 *
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 * @return string
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 * @uses     smarty_function_escape_special_chars()
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 */
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function smarty_function_html_options($params) {
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    require_once(SMARTY_PLUGINS_DIR . 'shared.escape_special_chars.php');
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    $name = null;
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    $values = null;
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    $options = null;
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    $selected = null;
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    $output = null;
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    $id = null;
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    $class = null;
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    $extra = '';
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    foreach ($params as $_key => $_val) {
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        switch ($_key) {
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            case 'name':
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            case 'class':
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            case 'id':
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                $$_key = (string)$_val;
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                break;
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            case 'options':
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                $options = (array)$_val;
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                break;
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            case 'values':
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            case 'output':
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                $$_key = array_values((array)$_val);
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                break;
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            case 'selected':
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                if (is_array($_val)) {
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                    $selected = array();
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                    foreach ($_val as $_sel) {
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                        if (is_object($_sel)) {
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                            if (method_exists($_sel, "__toString")) {
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                                $_sel = smarty_function_escape_special_chars((string)$_sel->__toString());
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                            } else {
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                                trigger_error("html_options: selected attribute contains an object of class '" . get_class($_sel) . "' without __toString() method", E_USER_NOTICE);
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                                continue;
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                            }
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                        } else {
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                            $_sel = smarty_function_escape_special_chars((string)$_sel);
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                        }
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                        $selected[$_sel] = true;
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                    }
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                } elseif (is_object($_val)) {
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                    if (method_exists($_val, "__toString")) {
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                        $selected = smarty_function_escape_special_chars((string)$_val->__toString());
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                    } else {
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                        trigger_error("html_options: selected attribute is an object of class '" . get_class($_val) . "' without __toString() method", E_USER_NOTICE);
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                    }
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                } else {
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                    $selected = smarty_function_escape_special_chars((string)$_val);
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                }
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                break;
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            case 'strict':
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                break;
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            case 'disabled':
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            case 'readonly':
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                if (!empty($params['strict'])) {
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                    if (!is_scalar($_val)) {
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                        trigger_error("html_options: $_key attribute must be a scalar, only boolean true or string '$_key' will actually add the attribute", E_USER_NOTICE);
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                    }
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                    if ($_val === true || $_val === $_key) {
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                        $extra .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_key) . '"';
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                    }
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                    break;
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                }
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            // omit break; to fall through!
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            default:
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                if (!is_array($_val)) {
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                    $extra .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_val) . '"';
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                } else {
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                    trigger_error("html_options: extra attribute '$_key' cannot be an array", E_USER_NOTICE);
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                }
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                break;
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        }
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    }
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    if (!isset($options) && !isset($values)) {
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        /* raise error here? */
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        return '';
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    }
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    $_html_result = '';
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    $_idx = 0;
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    if (isset($options)) {
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        foreach ($options as $_key => $_val) {
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            $_html_result .= smarty_function_html_options_optoutput($_key, $_val, $selected, $id, $class, $_idx);
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        }
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    } else {
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        foreach ($values as $_i => $_key) {
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            $_val = isset($output[$_i]) ? $output[$_i] : '';
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            $_html_result .= smarty_function_html_options_optoutput($_key, $_val, $selected, $id, $class, $_idx);
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        }
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    }
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    if (!empty($name)) {
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        $_html_class = !empty($class) ? ' class="' . $class . '"' : '';
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        $_html_id = !empty($id) ? ' id="' . $id . '"' : '';
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        $_html_result = '<select name="' . $name . '"' . $_html_class . $_html_id . $extra . '>' . "\n" . $_html_result . '</select>' . "\n";
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    }
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    return $_html_result;
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}
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function smarty_function_html_options_optoutput($key, $value, $selected, $id, $class, &$idx) {
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    if (!is_array($value)) {
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        $_key = smarty_function_escape_special_chars($key);
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        $_html_result = '<option value="' . $_key . '"';
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        if (is_array($selected)) {
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            if (isset($selected[$_key])) {
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                $_html_result .= ' selected="selected"';
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            }
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        } elseif ($_key === $selected) {
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            $_html_result .= ' selected="selected"';
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        }
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        $_html_class = !empty($class) ? ' class="' . $class . ' option"' : '';
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        $_html_id = !empty($id) ? ' id="' . $id . '-' . $idx . '"' : '';
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        if (is_object($value)) {
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            if (method_exists($value, "__toString")) {
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                $value = smarty_function_escape_special_chars((string)$value->__toString());
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            } else {
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                trigger_error("html_options: value is an object of class '" . get_class($value) . "' without __toString() method", E_USER_NOTICE);
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                return '';
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            }
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        } else {
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            $value = smarty_function_escape_special_chars((string)$value);
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        }
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        $_html_result .= $_html_class . $_html_id . '>' . $value . '</option>' . "\n";
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        $idx++;
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    } else {
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        $_idx = 0;
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        $_html_result = smarty_function_html_options_optgroup($key, $value, $selected, !empty($id) ? ($id . '-' . $idx) : null, $class, $_idx);
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        $idx++;
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    }
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    return $_html_result;
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}
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function smarty_function_html_options_optgroup($key, $values, $selected, $id, $class, &$idx) {
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    $optgroup_html = '<optgroup label="' . smarty_function_escape_special_chars($key) . '">' . "\n";
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    foreach ($values as $key => $value) {
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        $optgroup_html .= smarty_function_html_options_optoutput($key, $value, $selected, $id, $class, $idx);
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    }
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    $optgroup_html .= "</optgroup>\n";
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    return $optgroup_html;
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}