function _diff_body_rows in Diff 6

Same name and namespace in other branches

1. 5.2 diff.module \_diff_body_rows()
2. 6.2 diff.pages.inc \_diff_body_rows()
3. 7.3 diff.pages.inc \_diff_body_rows()
4. 7.2 diff.pages.inc \_diff_body_rows()

Creates an array of rows which represent a diff between $old_node and $new_node. The rows can be used via theme('diff_table') to be displayed.

Parameters

$old_node: Node for comparison which will be displayed on the left side.

$new_node: Node for comparison which will be displayed on the right side.

2 calls to _diff_body_rows()

diff_diffs_show in ./diff.module

Create output string for a comparison of 'node' between versions 'old_vid' and 'new_vid'.

diff_node_form_build_preview_changes in ./diff.module

Callback if 'Preview changes' is pressed.

File

./diff.module, line 328

Provides functionality to show a diff between two node revisions.

Code

function _diff_body_rows(&$old_node, &$new_node) {
  drupal_add_css(drupal_get_path('module', 'diff') . '/diff.css', 'module', 'all', FALSE);
  include_once 'DiffEngine.php';
  include_once 'node.inc';
  if (module_exists('taxonomy')) {
    include_once 'taxonomy.inc';
  }
  if (module_exists('upload')) {
    include_once 'upload.inc';
  }
  if (module_exists('content')) {
    include_once 'cck.inc';
  }
  $rows = array();
  $any_visible_change = false;
  $node_diffs = module_invoke_all('diff', $old_node, $new_node);

  // We start off assuming all form elements are in the correct order.
  $node_diffs['#sorted'] = TRUE;

  // Recurse through all child elements.
  $count = 0;
  foreach (element_children($node_diffs) as $key) {

    // Assign a decimal placeholder weight to preserve original array order.
    if (!isset($node_diffs[$key]['#weight'])) {
      $node_diffs[$key]['#weight'] = $count / 1000;
    }
    else {

      // If one of the child elements has a weight then we will need to sort
      // later.
      unset($node_diffs['#sorted']);
    }
    $count++;
  }

  // One of the children has a #weight.
  if (!isset($node_diffs['#sorted'])) {
    uasort($node_diffs, "element_sort");
  }
  foreach ($node_diffs as $node_diff) {
    $diff = new Diff($node_diff['#old'], $node_diff['#new']);
    $formatter = new DrupalDiffFormatter();
    if (isset($node_diff['#format'])) {
      $formatter->show_header = $node_diff['#format']['show_header'];
    }
    $diff_rows = $formatter
      ->format($diff);
    if (count($diff_rows)) {
      $rows[] = array(
        array(
          'data' => t('Changes to %name', array(
            '%name' => $node_diff['#name'],
          )),
          'class' => 'diff-section-title',
          'colspan' => 4,
        ),
      );
      $rows = array_merge($rows, $diff_rows);
      $any_visible_change = true;
    }
  }
  if (!$any_visible_change) {
    $rows[] = array(
      array(
        'data' => t('No visible changes'),
        'class' => 'diff-section-title',
        'colspan' => 4,
      ),
    );

    // Needed to keep safari happy
    $rows[] = array(
      array(
        'data' => '',
      ),
      array(
        'data' => '',
      ),
      array(
        'data' => '',
      ),
      array(
        'data' => '',
      ),
    );
  }
  return $rows;
}