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<?php

/* vim: set expandtab tabstop=4 shiftwidth=4: */

// +----------------------------------------------------------------------+

// | PHP version 4.0                                                      |

// +----------------------------------------------------------------------+

// | Copyright (c) 1997-2003 The PHP Group                                |

// +----------------------------------------------------------------------+

// | This source file is subject to version 2.0 of the PHP license,       |

// | that is bundled with this package in the file LICENSE, and is        |

// | available at through the world-wide-web at                           |

// | http://www.php.net/license/2_02.txt.                                 |

// | If you did not receive a copy of the PHP license and are unable to   |

// | obtain it through the world-wide-web, please send a note to          |

// | license@php.net so we can mail you a copy immediately.               |

// +----------------------------------------------------------------------+

// | Authors: Alexey Borzov <borz_off@cs.msu.su>                          |

// |          Bertrand Mansion <bmansion@mamasam.com>                     |

// |          Thomas Schulz <ths@4bconsult.de>                            |

// +----------------------------------------------------------------------+

//

// $Id: ArraySmarty.php,v 1.1 2005-03-30 08:50:33 jpm Exp $

require_once 'HTML/QuickForm/Renderer/Array.php';

/**

 * A static renderer for HTML_QuickForm, makes an array of form content

 * useful for an Smarty template

 *

 * Based on old toArray() code and ITStatic renderer.

 *

 * The form array structure is the following:

 * Array (

 *  [frozen]       => whether the complete form is frozen'

 *  [javascript]   => javascript for client-side validation

 *  [attributes]   => attributes for <form> tag

 *  [hidden]       => html of all hidden elements

 *  [requirednote] => note about the required elements

 *  [errors] => Array

 *      (

 *          [1st_element_name] => Error for the 1st element

 *          ...

 *          [nth_element_name] => Error for the nth element

 *      )

 *

 *  [header] => Array

 *      (

 *          [1st_header_name] => Header text for the 1st header

 *          ...

 *          [nth_header_name] => Header text for the nth header

 *      )

 *

 *  [1st_element_name] => Array for the 1st element

 *  ...

 *  [nth_element_name] => Array for the nth element

 *

 * // where an element array has the form:

 *      (

 *          [name]      => element name

 *          [value]     => element value,

 *          [type]      => type of the element

 *          [frozen]    => whether element is frozen

 *          [label]     => label for the element

 *          [required]  => whether element is required

 * // if element is not a group:

 *          [html]      => HTML for the element

 * // if element is a group:

 *          [separator] => separator for group elements

 *          [1st_gitem_name] => Array for the 1st element in group

 *          ...

 *          [nth_gitem_name] => Array for the nth element in group

 *      )

 * )

 *

 * @access public

 */

class HTML_QuickForm_Renderer_ArraySmarty extends HTML_QuickForm_Renderer_Array

{

   /**

    * The Smarty template engine instance

    * @var object

    */

    var $_tpl = null;

   /**

    * Current element index

    * @var integer

    */

    var $_elementIdx = 0;

    /**

    * The current element index inside a group

    * @var integer

    */

    var $_groupElementIdx = 0;

   /**

    * How to handle the required tag for required fields

    * @var string

    * @see      setRequiredTemplate()

    */

    var $_required = '';

   /**

    * How to handle error messages in form validation

    * @var string

    * @see      setErrorTemplate()

    */

    var $_error = '';

   /**

    * Constructor

    *

    * @param  object  reference to the Smarty template engine instance

    * @param  bool    true: render an array of labels to many labels, $key 0 to 'label' and the oterh to "label_$key"

    * @access public

    */

    function HTML_QuickForm_Renderer_ArraySmarty(&$tpl, $staticLabels = false)

    {

        $this->HTML_QuickForm_Renderer_Array(true, $staticLabels);

        $this->_tpl =& $tpl;

    } // end constructor

   /**

    * Called when visiting a header element

    *

    * @param    object     An HTML_QuickForm_header element being visited

    * @access   public

    * @return   void

    */

    function renderHeader(&$header)

    {

        if ($name = $header->getName()) {

            $this->_ary['header'][$name] = $header->toHtml();

        } else {

            $this->_ary['header'][$this->_sectionCount] = $header->toHtml();

        }

        $this->_currentSection = $this->_sectionCount++;

    } // end func renderHeader

   /**

    * Called when visiting a group, before processing any group elements

    *

    * @param    object     An HTML_QuickForm_group object being visited

    * @param    bool       Whether a group is required

    * @param    string     An error message associated with a group

    * @access   public

    * @return   void

    */

    function startGroup(&$group, $required, $error)

    {

        parent::startGroup($group, $required, $error);

        $this->_groupElementIdx = 1;

    } // end func startGroup

   /**

    * Creates an array representing an element containing

    * the key for storing this

    *

    * @access private

    * @param  object    An HTML_QuickForm_element object

    * @param  bool      Whether an element is required

    * @param  string    Error associated with the element

    * @return array

    */

    function _elementToArray(&$element, $required, $error)

    {

        $ret = parent::_elementToArray($element, $required, $error);

        if ('group' == $ret['type']) {

            $ret['html'] = $element->toHtml();

            // we don't need the elements, see the array structure

            unset($ret['elements']);

        }

        if (!empty($this->_required)){

            $this->_renderRequired($ret['label'], $ret['html'], $required, $error);

        }

        if (!empty($this->_error)) {

            $this->_renderError($ret['label'], $ret['html'], $error);

            $ret['error'] = $error;

        }

        // create keys for elements grouped by native group or name

        if (strstr($ret['name'], '[') or $this->_currentGroup) {

            preg_match('/([^]]*)\\[([^]]*)\\]/', $ret['name'], $matches);

            if (isset($matches[1])) {

                $sKeysSub = substr_replace($ret['name'], '', 0, strlen($matches[1]));

                $sKeysSub = str_replace(

                    array('['  ,   ']', '[\'\']'),

                    array('[\'', '\']', '[]'    ),

                    $sKeysSub

                );

                $sKeys = '[\'' . $matches[1]  . '\']' . $sKeysSub;

            } else {

                $sKeys = '[\'' . $ret['name'] . '\']';

            }

            // special handling for elements in native groups

            if ($this->_currentGroup) {

                // skip unnamed group items unless radios: no name -> no static access

                // identification: have the same key string as the parent group

                if ($this->_currentGroup['keys'] == $sKeys and 'radio' != $ret['type']) {

                    return false;

                }

                // reduce string of keys by remove leading group keys

                if (0 === strpos($sKeys, $this->_currentGroup['keys'])) {

                    $sKeys = substr_replace($sKeys, '', 0, strlen($this->_currentGroup['keys']));

                }

            }

        // element without a name

        } elseif ($ret['name'] == '') {

            $sKeys = '[\'element_' . $this->_elementIdx . '\']';

        // other elements

        } else {

            $sKeys = '[\'' . $ret['name'] . '\']';

        }

        // for radios: add extra key from value

        if ('radio' == $ret['type'] and substr($sKeys, -2) != '[]') {

            $sKeys .= '[\'' . $ret['value'] . '\']';

        }

        $this->_elementIdx++;

        $ret['keys'] = $sKeys;

        return $ret;

    } // end func _elementToArray

   /**

    * Stores an array representation of an element in the form array

    *

    * @access private

    * @param array  Array representation of an element

    * @return void

    */

    function _storeArray($elAry)

    {

        if ($elAry) {

            $sKeys = $elAry['keys'];

            unset($elAry['keys']);

            // where should we put this element...

            if (is_array($this->_currentGroup) && ('group' != $elAry['type'])) {

                $toEval = '$this->_currentGroup' . $sKeys . ' = $elAry;';

            } else {

                $toEval = '$this->_ary' . $sKeys . ' = $elAry;';

            }

            eval($toEval);

        }

        return;

    }

   /**

    * Called when an element is required

    *

    * This method will add the required tag to the element label and/or the element html

    * such as defined with the method setRequiredTemplate.

    *

    * @param    string      The element label

    * @param    string      The element html rendering

    * @param    boolean     The element required

    * @param    string      The element error

    * @see      setRequiredTemplate()

    * @access   private

    * @return   void

    */

    function _renderRequired(&$label, &$html, &$required, &$error)

    {

        $this->_tpl->assign(array(

            'label'    => $label,

            'html'     => $html,

            'required' => $required,

            'error'    => $error

        ));

        if (!empty($label) && strpos($this->_required, $this->_tpl->left_delimiter . '$label') !== false) {

            $label = $this->_tplFetch($this->_required);

        }

        if (!empty($html) && strpos($this->_required, $this->_tpl->left_delimiter . '$html') !== false) {

            $html = $this->_tplFetch($this->_required);

        }

        $this->_tpl->clear_assign(array('label', 'html', 'required'));

    } // end func _renderRequired

   /**

    * Called when an element has a validation error

    *

    * This method will add the error message to the element label or the element html

    * such as defined with the method setErrorTemplate. If the error placeholder is not found

    * in the template, the error will be displayed in the form error block.

    *

    * @param    string      The element label

    * @param    string      The element html rendering

    * @param    string      The element error

    * @see      setErrorTemplate()

    * @access   private

    * @return   void

    */

    function _renderError(&$label, &$html, &$error)

    {

        $this->_tpl->assign(array('label' => '', 'html' => '', 'error' => $error));

        $error = $this->_tplFetch($this->_error);

        $this->_tpl->assign(array('label' => $label, 'html'  => $html));

        if (!empty($label) && strpos($this->_error, $this->_tpl->left_delimiter . '$label') !== false) {

            $label = $this->_tplFetch($this->_error);

        } elseif (!empty($html) && strpos($this->_error, $this->_tpl->left_delimiter . '$html') !== false) {

            $html = $this->_tplFetch($this->_error);

        }

        $this->_tpl->clear_assign(array('label', 'html', 'error'));

    } // end func _renderError

   /**

    * Process an template sourced in a string with Smarty

    *

    * Smarty has no core function to render	a template given as a string.

    * So we use the smarty eval plugin function	to do this.

    *

    * @param    string      The template source

    * @access   private

    * @return   void

    */

    function _tplFetch($tplSource)

    {

        if (!function_exists('smarty_function_eval')) {

            require SMARTY_DIR . '/plugins/function.eval.php';

        }

        return smarty_function_eval(array('var' => $tplSource), $this->_tpl);

    }// end func _tplFetch

   /**

    * Sets the way required elements are rendered

    *

    * You can use {$label} or {$html} placeholders to let the renderer know where

    * where the element label or the element html are positionned according to the

    * required tag. They will be replaced accordingly with the right value.	You

    * can use the full smarty syntax here, especially a custom modifier for I18N.

    * For example:

    * {if $required}<span style="color: red;">*</span>{/if}{$label|translate}

    * will put a red star in front of the label if the element is required and

    * translate the label.

    *

    *

    * @param    string      The required element template

    * @access   public

    * @return   void

    */

    function setRequiredTemplate($template)

    {

        $this->_required = $template;

    } // end func setRequiredTemplate

   /**

    * Sets the way elements with validation errors are rendered

    *

    * You can use {$label} or {$html} placeholders to let the renderer know where

    * where the element label or the element html are positionned according to the

    * error message. They will be replaced accordingly with the right value.

    * The error message will replace the {$error} placeholder.

    * For example:

    * {if $error}<span style="color: red;">{$error}</span>{/if}<br />{$html}

    * will put the error message in red on top of the element html.

    *

    * If you want all error messages to be output in the main error block, use

    * the {$form.errors} part of the rendered array that collects all raw error

    * messages.

    *

    * If you want to place all error messages manually, do not specify {$html}

    * nor {$label}.

    *

    * Groups can have special layouts. With this kind of groups, you have to

    * place the formated error message manually. In this case, use {$form.group.error}

    * where you want the formated error message to appear in the form.

    *

    * @param    string      The element error template

    * @access   public

    * @return   void

    */

    function setErrorTemplate($template)

    {

        $this->_error = $template;

    } // end func setErrorTemplate

}

?>