crumbs.breadcrumb.inc in Crumbs, the Breadcrumbs suite 6.2

File

crumbs.breadcrumb.inc

<?php

/**
 * Default theme implementation for theme('crumbs_breadcrumb').
 * The default implementation uses the theme's implementation of
 * theme('breadcrumb').
 * Themes that are crumbs-aware can override this theme hook to ignore
 * theme('breadcrumb'). Such a theme implementation will look much simpler than
 * the default imp.
 */
function theme_crumbs_breadcrumb(array $breadcrumb_items) {
  $original_page_title = drupal_get_title();
  $last_item = array_pop($breadcrumb_items);
  $breadcrumb_items_html = array();
  foreach ($breadcrumb_items as $item) {
    $breadcrumb_items_html[] = crumbs_render_breadcrumb_item($item);
  }

  // Some themes (Zen, in particular) use drupal_get_title() to
  // display the last breadcrumb item.
  // We use drupal_set_title() to temporarily override this value.
  drupal_set_title($last_item['link_title']);
  $breadcrumb_html = theme('breadcrumb', $breadcrumb_items_html);
  drupal_set_title($original_page_title);
  return $breadcrumb_html;
}
function crumbs_render_breadcrumb_item(array $item) {
  $options = $item['link_options'];
  return l($item['link_title'], $item['link_path'], $options);
}
function crumbs_build_breadcrumb(array $trail) {
  $pluginEngine = _crumbs_load_plugin_engine();
  $breadcrumbBuilder = new _crumbs_BreadcrumbBuilder($pluginEngine);
  return $breadcrumbBuilder
    ->buildBreadcrumb($trail);
}
class _crumbs_BreadcrumbBuilder {
  protected $_pluginEngine;
  function __construct($pluginEngine) {
    $this->_pluginEngine = $pluginEngine;
  }
  function buildBreadcrumb($trail) {
    $breadcrumb = array();
    foreach ($trail as $path => $item) {
      if ($item) {
        $title = $this
          ->_findTitle($path, $item, $breadcrumb);
        if (!isset($title)) {
          $title = $item['title'];
        }

        // The item will be skipped, if $title === FALSE.
        if (isset($title) && $title !== FALSE) {
          $item['link_title'] = $title;
          $item['link_options'] = array();
          $breadcrumb[] = $item;
        }
      }
    }
    $this
      ->_decorateBreadcrumb($breadcrumb);
    return $breadcrumb;
  }
  protected function _findTitle($path, array $item, array $breadcrumb_parents) {
    $invokeAction = new _crumbs_InvokeAction_findTitle($path, $item, $breadcrumb_parents);
    $this->_pluginEngine
      ->invokeAll_find($invokeAction);
    return $invokeAction
      ->getValue();
  }
  protected function _decorateBreadcrumb(array &$breadcrumb) {
    $invokeAction = new _crumbs_InvokeAction_decorateBreadcrumb($breadcrumb);
    $this->_pluginEngine
      ->invokeAll_alter($invokeAction);
  }

}
class _crumbs_InvokeAction_findTitle extends crumbs_InvokeAction_findForPath {
  protected $_method = 'findTitle';
  protected $_breadcrumb_parents;
  function __construct($path, array $item, array $breadcrumb_parents) {
    crumbs_InvokeAction_findForPath::__construct($path, $item);
    $this->_breadcrumb_parents = $breadcrumb_parents;
  }
  protected function _invoke($plugin, $method) {
    return $plugin
      ->{$method}($this->_path, $this->_item, $this->_breadcrumb_parents);
  }

}
class _crumbs_InvokeAction_decorateBreadcrumb implements crumbs_InvokeActionInterface_alter {
  protected $_breadcrumb;
  function __construct(array &$breadcrumb) {
    $this->_breadcrumb =& $breadcrumb;
  }
  function invoke($plugin, $plugin_key) {
    if (method_exists($plugin, 'decorateBreadcrumb')) {
      $plugin
        ->decorateBreadcrumb($this->_breadcrumb);
    }
  }

}

Functions

Name	Description
crumbs_build_breadcrumb
crumbs_render_breadcrumb_item
theme_crumbs_breadcrumb	Default theme implementation for theme('crumbs_breadcrumb'). The default implementation uses the theme's implementation of theme('breadcrumb'). Themes that are crumbs-aware can override this theme hook to…

Classes

Name	Description
_crumbs_BreadcrumbBuilder
_crumbs_InvokeAction_decorateBreadcrumb
_crumbs_InvokeAction_findTitle