formdefaults.module in Form Defaults 5

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formdefaults.module
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<?php

/**
 * Provides a mechanism to override the description and title fields on drupal forms.
 * Note that this is not too useful for node fields because they all are node_edit. 
**/

/**
 * Implementation of hook_perm().
 */
function formdefaults_perm() {
  return array(
    'change form labels',
  );
}

/**
 * Implementation of hook_help().
 */
function formdefaults_help($section) {
  switch ($section) {
    case 'admin/modules#description':
      return t("Lets the site administrator edit the description, title and markup attributes of a form.");
  }
}

/**
* Implements hook_menu.
*
*/
function formdefaults_menu($may_cache) {
  global $user;
  $items = array();
  if ($may_cache) {
    $items[] = array(
      'path' => 'formdefaults',
      'title' => t('Edit Form'),
      'description' => t('Edit a form'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array(
        'formdefaults_edit',
      ),
      'access' => user_access('change form labels'),
      'type' => MENU_CALLBACK,
    );
    $items[] = array(
      'path' => 'admin/build/formdefaults',
      'title' => t('Form Labels and Text'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array(
        'formdefaults_enable',
      ),
      'description' => t('Turns on or off the editing controls to allow editing form labels and descriptions'),
      'access' => user_access('change form labels'),
      'type' => MENU_NORMAL_ITEM,
    );
  }
  return $items;
}

/**
 * implements hook_form_alter
 */
function formdefaults_form_alter($formid, &$form) {
  $enabled = $_SESSION['formdefaults_enabled'] && $formid != 'formdefaults_edit';

  // Add a header and a footer to all forms for instructions
  $form['formdefaults_header'] = array(
    '#type' => 'markup',
    '#value' => '',
    '#weight' => -10,
  );
  $form['formdefaults_footer'] = array(
    '#type' => 'markup',
    '#value' => '',
    '#weight' => 10,
  );

  //If the user has the right privs, add the links to alter the form
  $formfieldsarray = array();
  if (user_access('change form labels') && $enabled) {
    $forms = $_SESSION['formdefaults_forms'];
    foreach ($form as $fieldname => $value) {
      _formdefaults_get_field($formid, $fieldname, $form[$fieldname], $formfieldsarray);
    }
    $forms[$formid] = $formfieldsarray;
    $_SESSION['formdefaults_forms'] = $forms;
  }
  $savedform = formdefaults_getform($formid);
  if ($savedform) {
    foreach ($form as $fieldname => $value) {
      formdefaults_alterform($formid, $fieldname, $form[$fieldname], $savedform);
    }
  }
}

/**
 * Recursively iterate through the form array to save  titles and descirptions.
 * The the resulting title/description array is intentionally flattened to make
 * indexing easier during the "replacement" portion of the code. 
 * Also tack on the [edit] link.
 * @param $formid the formid of the form we're altering
 * @param $fieldname the fieldname of the last form field we found.
 * @param $fieldvalue The array of field values that we found last.
 * @param $fieldarray We store the array of titles and desciptions in this array for storing later.
 */
function _formdefaults_get_field($formid, $fieldname, &$fieldvalue, &$fieldarray) {
  if (is_array($fieldvalue) && !(strpos($fieldname, '#') === 0)) {

    // Determine return location for links.
    $query = array();
    $query['destination'] = $_GET['q'];
    $query = drupal_query_string_encode($query);
    $type = $fieldvalue['#type'];
    $fieldarray[$fieldname]['type'] = $type;

    // Skip submit and hidden fields cause they're too dangerous to alter.
    if ($type != 'submit' && $type != 'hidden') {
      if (array_key_exists('#weight', $fieldvalue)) {
        $fieldarray[$fieldname]['weight'] = $fieldvalue['#weight'];
      }
      else {
        $fieldarray[$fieldname]['weight'] = 'unset';
      }
      if ($type == 'markup') {
        $fieldarray[$fieldname]['value'] = $fieldvalue['#value'];
        $fieldvalue['#value'] = l('[' . t('edit') . ']', 'formdefaults/' . $formid . '/' . $fieldname, null, $query) . ' ' . $fieldvalue['#value'];
      }
      else {
        $fieldarray[$fieldname]['title'] = $fieldvalue['#title'];
        $fieldarray[$fieldname]['description'] = $fieldvalue['#description'];
        $fieldvalue['#description'] = l('[' . t('edit') . ']', 'formdefaults/' . $formid . '/' . $fieldname, null, $query) . ' ' . $fieldvalue['#description'];
      }
    }
    foreach ($fieldvalue as $key => $value) {
      if (!(strpos($key, '#') === 0)) {
        _formdefaults_get_field($formid, $key, $fieldvalue[$key], $fieldarray);
      }
    }
  }
}

/**
 * Alters the form based on the form replacement items passed.
 * @param $formid the form id of the form that we're altering
 * @param $fieldname the field name of the last field we found
 * @param $fieldvalues the field value array form the last field we found.
 * @param $formreplace the replacement data for the form. 
*/
function formdefaults_alterform($formid, $fieldname, &$fieldvalue, $formreplace) {

  // Determine return location for links.
  $query = array();
  $query['destination'] = $_GET['q'];
  $query = drupal_query_string_encode($query);
  $enabled = $_SESSION['formdefaults_enabled'] && $formid != 'formdefaults_edit';

  // Need to make sure we aren't processing attributes.
  if (is_array($fieldvalue) && !(strpos($fieldname, '#') === 0)) {
    if (is_array($formreplace[$fieldname])) {

      // perform the replacement.
      if ($formreplace[$fieldname]['hide_it'] && !$_SESSION['formdefaults_enabled']) {

        //drupal_set_message($fieldname.":".$formreplace[$fieldname]['hide_it']);
        $fieldvalue['#type'] = 'hidden';
        $fieldvalue['#value'] = $fieldvalue['#default_value'];
      }
      if ($formreplace[$fieldname]['weight'] != 'unset') {
        $fieldvalue['#weight'] = $formreplace[$fieldname]['weight'];
      }
      if ($fieldvalue['#type'] == 'markup') {
        $fieldvalue['#value'] = check_markup($formreplace[$fieldname]['value'], $formreplace[$fieldname]['format'], false);
      }
      else {
        $fieldvalue['#title'] = $formreplace[$fieldname]['title'];
        $fieldvalue['#description'] = $formreplace[$fieldname]['description'];
      }

      // add back on the edit control if appropriate.
      if (user_access('change form labels') && $enabled) {
        if ($fieldvalue['#type'] != 'markup') {
          $fieldvalue['#description'] = l('[' . t('edit') . ']', 'formdefaults/' . $formid . '/' . $fieldname, '', $query) . ' ' . $fieldvalue['#description'];
        }
        else {
          $fieldvalue['#value'] = l('[' . t('edit markup') . ']', 'formdefaults/' . $formid . '/' . $fieldname, '', $query) . ' ' . $fieldvalue['#value'];
        }
      }
    }

    // If this is a fieldset, we're going to need to recurse.
    foreach ($fieldvalue as $key => $value) {
      if (!(strpos($key, '#') === 0)) {
        formdefaults_alterform($formid, $key, $fieldvalue[$key], $formreplace);
      }
    }
  }
}

/**
 * Form to edit the field title and description. 
 */
function formdefaults_edit() {
  $form_array = $_SESSION['formdefaults_forms'];
  $formid = arg(1);
  $fieldname = arg(2);
  $originalfields = $form_array[$formid][$fieldname];
  $savedform = formdefaults_getform($formid);
  $weight_range = range(-10, 10);
  $weights = array(
    'unset' => 'unset',
  );
  foreach ($weight_range as $weight) {
    $weights[(string) $weight] = (string) $weight;
  }
  if (is_array($savedform[$fieldname])) {
    $formfields = array_merge($originalfields, $savedform[$fieldname]);
  }
  else {
    $formfields = $originalfields;
  }
  $form['formid'] = array(
    '#type' => 'hidden',
    '#value' => $formid,
  );
  $form['fieldname'] = array(
    '#type' => 'hidden',
    '#value' => $fieldname,
  );
  $form['type'] = array(
    '#type' => 'hidden',
    '#title' => 'Field Type',
    '#value' => $originalfields['type'],
  );
  $form['warning'] = array(
    '#type' => 'markup',
    '#value' => 'Some text to edit',
  );
  $form['hide_it'] = array(
    '#type' => 'checkbox',
    '#title' => 'Hide this field',
    '#description' => 'Checking this box will convert the field to a hidden field.' . ' Fields will not actually be hidden while the form editor is enabled. ' . '(Otherwise you wouldn\'t be able to unhide them). ',
    '#default_value' => $formfields['hide_it'],
  );
  if ($originalfields['type'] == 'markup') {
    $form['value'] = array(
      '#type' => 'textarea',
      '#title' => 'Text or markup',
      '#rows' => 30,
      '#cols' => 80,
      '#default_value' => $formfields['value'],
    );
    $form['format'] = filter_form($formfields['format']);
    $form['value_original'] = array(
      '#type' => item,
      '#title' => 'Original value',
      '#value' => $originalfields['value'],
    );
  }
  else {
    $form['title'] = array(
      '#type' => 'textfield',
      '#title' => 'Field Title',
      '#default_value' => $formfields['title'],
    );
    $form['title_old'] = array(
      '#type' => 'item',
      '#title' => 'Original Title',
      '#value' => $originalfields['title'],
    );
    $form['description'] = array(
      '#type' => 'textarea',
      '#title' => 'Field Description',
      '#default_value' => $formfields['description'],
      '#rows' => 30,
      '#cols' => 80,
    );
    $form['description_old'] = array(
      '#type' => 'item',
      '#title' => 'Original Description',
      '#value' => $originalfields['description'],
    );
  }
  $form['weight'] = array(
    '#type' => 'select',
    '#title' => 'Weight',
    '#options' => $weights,
    '#default_value' => $formfields['weight'],
    '#description' => 'Higher values appear near at the top of the form, lower values at the bottom.',
  );
  $form['weight_old'] = array(
    '#type' => 'item',
    '#title' => 'Original Weight',
    '#value' => $originalfields['weight'],
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => 'Save',
  );
  return $form;
}
function formdefaults_edit_submit($formid, $form_values) {
  $formid = $form_values['formid'];
  $fieldname = $form_values['fieldname'];
  $formarray = formdefaults_getform($formid);
  $baseform = $formarray;

  // set the form values
  if ($form_values['type'] == 'markup') {
    $formarray[$fieldname]['value'] = $form_values['value'];
    $formarray[$fieldname]['format'] = $form_values['format'];
  }
  else {
    $formarray[$fieldname]['title'] = $form_values['title'];
    $formarray[$fieldname]['description'] = $form_values['description'];
  }
  $formarray[$fieldname]['hide_it'] = $form_values['hide_it'];
  $formarray[$fieldname]['weight'] = $form_values['weight'];
  $formdata = serialize($formarray);
  if ($baseform) {
    db_query('update {formdefaults_forms} set formdata=\'%s\'
             where formid=\'%s\'', $formdata, $formid);
  }
  else {
    db_query('insert into {formdefaults_forms}(formid,formdata) values (\'%s\',\'%s\')', $formid, $formdata);
  }
}

/**
 * Retrieve from alterations from the database
 * @formid the form id to retrieve.
 */
function formdefaults_getform($formid) {
  $result = db_query('SELECT * from {formdefaults_forms} where formid=\'%s\'', $formid);
  $form = db_fetch_object($result);
  if ($form) {
    $formarray = unserialize($form->formdata);
  }
  else {
    $formarray = array();
  }
  return $formarray;
}
function formdefaults_enable() {
  $form['instructions'] = array(
    '#type' => markup,
    '#value' => '<p>To alter the defaults associated with a form, enable the forms module below and look for the [edit] ' . 'controls in the description of each form field.  Navigate to the form and click [edit] link on the field  ' . 'you want to edit.  You\'ll be allowed to edit field titles, markup fields (like this one) as well as the textual descriptions ' . 'with each field.</p>',
  );
  if ($_SESSION['formdefaults_enabled']) {
    $form['disable'] = array(
      '#type' => 'submit',
      '#value' => 'disable',
    );
  }
  else {
    $form['enable'] = array(
      '#type' => 'submit',
      '#value' => 'enable',
    );
  }
  return $form;
}

/**
 *Toggle the form editor controls on and off
 */
function formdefaults_enable_submit($formid, $form_values) {
  $editor_enabled = $_SESSION['formdefaults_enabled'];
  if ($editor_enabled) {
    $_SESSION['formdefaults_enabled'] = false;
    drupal_set_message('Form defaults editor is now disabled');
  }
  else {
    $_SESSION['formdefaults_enabled'] = true;
    drupal_set_message('Form defaults editor is now enabled');
  }
  return $output;
}
Functions

Name	Description
formdefaults_alterform	Alters the form based on the form replacement items passed.
formdefaults_edit	Form to edit the field title and description.
formdefaults_edit_submit
formdefaults_enable
formdefaults_enable_submit	Toggle the form editor controls on and off
formdefaults_form_alter	implements hook_form_alter
formdefaults_getform	Retrieve from alterations from the database @formid the form id to retrieve.
formdefaults_help	Implementation of hook_help().
formdefaults_menu	Implements hook_menu.
formdefaults_perm	Implementation of hook_perm().
_formdefaults_get_field	Recursively iterate through the form array to save titles and descirptions. The the resulting title/description array is intentionally flattened to make indexing easier during the "replacement" portion of the code. Also tack on the [edit]…
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formdefaults.module in Form Defaults 5

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