function diff_node_form_add_changes in Diff 5.2

Same name and namespace in other branches

1. 5 diff.module \diff_node_form_add_changes()

Callback for node edit form to add the 'Preview changes' output.

1 string reference to 'diff_node_form_add_changes'

diff_form_alter in ./diff.module

Implementation of hook_form_alter(). Used to add a 'Preview changes' button on the node edit form.

File

./diff.module, line 583

Code

function diff_node_form_add_changes($form) {
  global $form_values;
  $op = isset($form_values['op']) ? $form_values['op'] : '';
  if ($op == t('Preview changes')) {

    // Diff module expects node as object, thus $form_values is cast to an object.
    $node = (object) $form_values;

    // Create diff of old node and edited node
    $rows = _diff_body_rows(node_load($form_values['nid']), $node);
    $cols = array(
      array(
        array(
          'class' => 'diff-marker',
        ),
        array(
          'class' => 'diff-content',
        ),
        array(
          'class' => 'diff-marker',
        ),
        array(
          'class' => 'diff-content',
        ),
      ),
    );
    $changes = theme('diff_table', array(), $rows, array(
      'class' => 'diff',
    ), NULL, $cols);

    // Prepend diff to edit form
    $form['#prefix'] = isset($form['#prefix']) ? $changes . $form['#prefix'] : $changes;
  }
  return $form;
}