node_breadcrumb.module in Node breadcrumb 6

File

node_breadcrumb.module

<?php

function _node_breadcrumb_set_location($mid, $last_path, $last_title) {
  $breadcrumb = array();
  while ($mid && ($item = menu_link_load($mid))) {
    if (!isset($menu_name)) {
      menu_set_active_menu_name($menu_name = $item['menu_name']);
      menu_set_active_item($item['link_path']);
    }
    array_unshift($breadcrumb, l($item['link_title'], $item['link_path']));
    $mid = $item['plid'];
  }
  array_unshift($breadcrumb, l(t('Home'), NULL));
  drupal_set_breadcrumb($breadcrumb);
}
function node_breadcrumb_nodeapi(&$node, $op, $teaser = NULL, $page = NULL) {
  if ($op == 'view' && $page) {
    $db_rules = db_query("select * from {node_breadcrumb_rule} order by weight, rid");
    while ($rule = db_fetch_object($db_rules)) {

      // check node type
      if ($rule->node_type != '' && $node->type != $rule->node_type) {
        continue;
      }

      // check terms
      foreach (array(
        $rule->tid1,
        $rule->tid2,
      ) as $tid) {
        if ($tid > 0) {
          if (empty($node->taxonomy[$tid])) {
            continue 2;
          }
        }
        elseif ($tid < 0) {
          foreach ($node->taxonomy as $term) {
            if ($term->vid == -$tid) {
              continue 2;
            }
          }
          continue 2;
        }
      }

      // check php condition
      if ($rule->condition != '') {
        eval("\$condition={$rule->condition};");
        if (!$condition) {
          continue;
        }
      }

      // apply menu location
      _node_breadcrumb_set_location($rule->mid, "node/{$node->nid}", $node->title);
      break;
    }
    module_invoke_all("node_breadcrumb", $node);
  }
}
function node_breadcrumb_perm() {
  return array(
    'administer node breadcrumb',
  );
}
function node_breadcrumb_init() {
  drupal_add_css(drupal_get_path('module', 'node_breadcrumb') . '/node_breadcrumb.css');
  $menu_item = menu_get_item();
  menu_set_active_menu_name(db_result(db_query("select menu_name from {menu_links} where link_path='%s'", $menu_item['href'])));
}
function node_breadcrumb_menu() {
  $items = array();
  $items['admin/settings/node_breadcrumb'] = array(
    'title' => 'Node breadcrumb',
    'page callback' => 'drupal_get_form',
    'page arguments' => array(
      'node_breadcrumb_admin_settings',
    ),
    'access arguments' => array(
      'administer node breadcrumb',
    ),
  );
  return $items;
}
function _node_breadcrumb_rule_form($fieldset_title, $node_type, $tids, $condition, $mid, $weight, $weight_delta, $submit) {
  $form = array(
    '#type' => 'fieldset',
    '#title' => $fieldset_title,
  );

  // node type
  $types = node_get_types();
  $types_select = array(
    '#type' => 'select',
    '#title' => t('Content type'),
    '#options' => array(
      '' => "<" . t('none') . ">",
    ),
  );
  foreach ($types as $type) {
    $types_select['#options'][$type->type] = $type->name;
  }
  if ($type) {
    $types_select['#default_value'] = $node_type;
  }
  $form['node_type'] = $types_select;

  // term
  if (module_exists('taxonomy')) {
    $form['tid'] = array(
      '#type' => 'fieldset',
      '#title' => t('Categories'),
      '#attributes' => array(
        'class' => 'node_breadcrumb_categories',
      ),
    );
    $vocabularies = taxonomy_get_vocabularies();
    $none_option = "<" . t('none') . ">";
    $vid2tid = array();
    if (is_array($tids)) {
      foreach ($tids as $tid) {
        if ($tid > 0) {
          $term = taxonomy_get_term($tid);
          $vid2tid[$term->vid] = $tid;
        }
        elseif ($tid < 0) {
          $vid2tid[-$tid] = $tid;
        }
      }
    }
    foreach ($vocabularies as $vocabulary) {
      $taxonomy_form = taxonomy_form($vocabulary->vid);
      unset($taxonomy_form['#options']['']);
      $taxonomy_form['#multiple'] = FALSE;
      $taxonomy_form['#default_value'] = $vid2tid[$vocabulary->vid] ? $vid2tid[$vocabulary->vid] : 0;
      unset($taxonomy_form['#size']);
      unset($all_option);
      $all_option->option = array(
        -$vocabulary->vid => "<" . t("any") . ">",
      );
      array_unshift($taxonomy_form['#options'], $all_option);
      array_unshift($taxonomy_form['#options'], $none_option);
      $form['tid']["vid_{$vocabulary->vid}"] = $taxonomy_form;
    }
  }

  // php condition
  $form['condition'] = array(
    '#type' => 'textarea',
    '#rows' => 1,
    '#title' => t('Condition'),
    '#description' => t('Additional PHP expression, e. g., $node->type == \'story\' || $node->type == \'news\''),
    '#default_value' => $condition,
  );

  // menu item
  $menu_item = menu_link_load($mid);
  $form['mid'] = array(
    '#type' => 'select',
    '#title' => t('Menu item'),
    '#required' => true,
    '#options' => menu_parent_options(menu_get_menus(), array(
      'mlid' => 0,
    )),
    '#default_value' => "{$menu_item['menu_name']}:{$mid}",
  );

  // weight
  $form['weight'] = array(
    '#type' => 'weight',
    '#title' => t('Weight'),
    '#default_value' => $weight,
    '#required' => true,
    '#delta' => $weight_delta,
  );

  // submit
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => $submit,
  );
  return $form;
}
function node_breadcrumb_admin_settings($dummy = NULL, $rid = NULL) {
  $weight_delta = max(5, db_result(db_query("select max(abs(weight)) from {node_breadcrumb_rule}")) + 1);
  if (module_exists('taxonomy')) {
    $vocabularies = taxonomy_get_vocabularies();
  }
  $types = node_get_types();

  // add rule
  $form['add'] = _node_breadcrumb_rule_form(t('Add rule'), NULL, NULL, NULL, NULL, 0, $weight_delta, t('Add rule'));

  // edit rule
  if ($rid) {
    $db_rule = db_query("select * from {node_breadcrumb_rule} where rid=%d", $rid);
    $rule = db_fetch_object($db_rule);
    if ($rule->rid) {
      $form['edit'] = _node_breadcrumb_rule_form(t('Edit rule'), $rule->node_type, array(
        $rule->tid1,
        $rule->tid2,
      ), $rule->condition, $rule->mid, $rule->weight, $weight_delta, t('Save rule'));
      $form['edit']['rid'] = array(
        '#type' => 'hidden',
        '#value' => $rid,
      );
      $form['edit']['cancel'] = array(
        '#type' => 'submit',
        '#value' => t('Cancel'),
      );
      unset($form['add']);
    }
  }

  // rules
  $db_rules = db_query("select * from {node_breadcrumb_rule} order by weight, rid");
  while ($rule = db_fetch_object($db_rules)) {
    $menu_item = menu_link_load($rule->mid);
    $terms = array();
    if (module_exists('taxonomy')) {
      if ($rule->tid1) {
        $term = taxonomy_get_term($rule->tid1);
        $terms[] = $rule->tid1 > 0 ? l($term->name, "taxonomy/term/{$rule->tid1}") : t("any of") . " &lt;" . $vocabularies[-$rule->tid1]->name . "&gt;";
      }
      if ($rule->tid2) {
        $term = taxonomy_get_term($rule->tid2);
        $terms[] = l($term->name, "taxonomy/term/{$rule->tid2}");
      }
    }
    unset($condition);
    if ($rule->condition != '') {
      $condition = check_plain($rule->condition);
      $js_condition = check_plain(str_replace("'", "\\'", $rule->condition));
      $condition = "<a title=\"{$condition}\" href=\"javascript:prompt('" . t('Condition') . "','{$js_condition}');void(0);\">PHP</a>";
    }
    $rids[$rule->rid] = '';
    $form['rules']['node_type'][$rule->rid] = array(
      '#value' => $types[$rule->node_type]->name,
    );
    $form['rules']['tid'][$rule->rid] = array(
      '#value' => empty($terms) ? "<" . t('none') . ">" : join(", ", $terms),
    );
    $form['rules']['condition'][$rule->rid] = array(
      '#value' => $condition,
    );
    $form['rules']['mid'][$rule->rid] = array(
      '#value' => l($menu_item['title'], $menu_item['href']),
    );
    $form['rules']['weight']["weight_{$rule->rid}"] = array(
      '#type' => 'weight',
      '#default_value' => $rule->weight,
      '#required' => true,
      '#delta' => $weight_delta,
    );
    $form['rules']['edit'][$rule->rid] = array(
      '#value' => l(t('edit'), "admin/settings/node_breadcrumb/{$rule->rid}"),
    );
  }
  $form['rules']['delete'] = array(
    '#type' => 'checkboxes',
    '#options' => $rids,
  );
  if ($form['rules']['node_type']) {
    $form['rules']['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Delete rule'),
    );
    $form['rules']['save'] = array(
      '#type' => 'submit',
      '#value' => t('Save'),
    );
  }
  return $form;
}
function node_breadcrumb_theme() {
  return array(
    'node_breadcrumb_admin_settings' => array(
      'arguments' => array(
        'form' => NULL,
      ),
    ),
  );
}
function theme_node_breadcrumb_admin_settings($form) {
  $output = "";
  if (!empty($form['rules']['node_type'])) {
    $header = array(
      theme('table_select_header_cell'),
      t('Type'),
      t('Term'),
      t('Condition'),
      t('Menu item'),
      t('Weight'),
      t('Operations'),
    );
    foreach (element_children($form['rules']['node_type']) as $rid) {
      $rows[] = array(
        drupal_render($form['rules']['delete'][$rid]),
        drupal_render($form['rules']['node_type'][$rid]),
        drupal_render($form['rules']['tid'][$rid]),
        drupal_render($form['rules']['condition'][$rid]),
        drupal_render($form['rules']['mid'][$rid]),
        drupal_render($form['rules']['weight']["weight_{$rid}"]),
        drupal_render($form['rules']['edit'][$rid]),
      );
    }
    $rows[] = array(
      array(
        'data' => drupal_render($form['rules']['submit']),
        'colspan' => 5,
      ),
      array(
        'data' => drupal_render($form['rules']['save']),
      ),
      array(
        'data' => '',
      ),
    );
    $rules = theme('table', $header, $rows);
    $output .= "<fieldset><legend>" . t("Rules") . "</legend>{$rules}</fieldset>";
  }
  $output .= drupal_render($form);
  return $output;
}
function node_breadcrumb_admin_settings_validate($form, &$form_state) {
  if ($form_state['values']['op'] == t('Delete rule') || $form_state['values']['op'] == t('Save')) {
    return;
  }
  foreach ($form_state['values'] as $key => $value) {
    if (substr($key, 0, 4) == 'vid_' && $value != 0) {
      $tids++;
    }
  }
  if ($tids > 2) {
    form_set_error('tid', t('You may select not more than 2 terms.'));
  }
  elseif ($form_state['values']['node_type'] == '' && $tids == 0 && empty($form_state['values']['condition'])) {
    form_set_error('', t('Fill the form below.'));
  }
}
function node_breadcrumb_admin_settings_submit($form, &$form_state) {
  if (isset($form_state['values']['mid'])) {
    $mid = $form_state['values']['mid'];
    $mid_colon = strpos($mid, ":");
    $mid = $mid_colon === FALSE ? NULL : substr($mid, $mid_colon + 1);
  }
  if ($form_state['values']['op'] == t('Delete rule')) {
    foreach ($form_state['values']['delete'] as $value) {
      if ($value) {
        $rids[] = $value + 0;
      }
    }
    if ($rids) {
      db_query("DELETE FROM {node_breadcrumb_rule} WHERE rid IN (%s)", join(",", $rids));
      drupal_set_message(t('Rule(s) deleted.'));
    }
  }
  elseif ($form_state['values']['op'] == t('Save')) {
    foreach ($form_state['values'] as $key => $weight) {
      if (substr($key, 0, 7) == 'weight_') {
        $rid = substr($key, 7);
        db_query("update {node_breadcrumb_rule} set weight=%d where rid=%d", $weight, $rid);
      }
    }
    drupal_set_message(t("Weights applied."));
  }
  elseif ($form_state['values']['op'] == t('Add rule')) {
    $tid = array();
    foreach ($form_state['values'] as $key => $value) {
      if (substr($key, 0, 4) == 'vid_' && $value != 0) {
        $tid[] = $value;
      }
    }
    $a = $GLOBALS['db_type'] == 'pgsql' ? "" : "`";
    db_query("INSERT INTO {node_breadcrumb_rule} (node_type, tid1, tid2, mid, weight, %scondition%s) VALUES ('%s', %d, %d, %d, %d, '%s')", $a, $a, $form_state['values']['node_type'], $tid[0], $tid[1], $mid, $form_state['values']['weight'], $form_state['values']['condition']);
    drupal_set_message(t('Rule added.'));
  }
  elseif ($form_state['values']['op'] == t('Save rule')) {
    $tid = array();
    foreach ($form_state['values'] as $key => $value) {
      if (substr($key, 0, 4) == 'vid_' && $value != 0) {
        $tid[] = $value;
      }
    }
    $a = $GLOBALS['db_type'] == 'pgsql' ? "" : "`";
    db_query("UPDATE {node_breadcrumb_rule} SET node_type='%s', tid1=%d, tid2=%d, mid=%d, weight=%d, %scondition%s='%s' WHERE rid=%d", $form_state['values']['node_type'], $tid[0], $tid[1], $mid, $form_state['values']['weight'], $a, $a, $form_state['values']['condition'], $form_state['values']['rid']);
    drupal_set_message(t('Rule saved.'));
    $form_state['redirect'] = "admin/settings/node_breadcrumb";
  }
  elseif ($form_state['values']['op'] == t('Cancel')) {
    $form_state['redirect'] = "admin/settings/node_breadcrumb";
  }
}

//function d($var) {print "<pre>"; print_r($var); print "</pre>";}

//function d($var) {if ($GLOBALS['user']->uid == 1) drupal_set_message("<pre>" . print_r($var, 1) . "</pre>");}

Functions

Name	Description
node_breadcrumb_admin_settings
node_breadcrumb_admin_settings_submit
node_breadcrumb_admin_settings_validate
node_breadcrumb_init
node_breadcrumb_menu
node_breadcrumb_nodeapi
node_breadcrumb_perm
node_breadcrumb_theme
theme_node_breadcrumb_admin_settings
_node_breadcrumb_rule_form
_node_breadcrumb_set_location