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farmOS/modules/farm/farm_ui/farm_ui.breadcrumb.inc

130 lines
3.7 KiB
PHP

<?php
/**
* Breadcrumb code for the Farm UI module.
*/
/**
* Helper function for altering the breadcrumb.
*/
function _farm_ui_menu_breadcrumb_alter(&$active_trail, $item) {
// If the current path is the front page, and there are more than 2 items:
$front = variable_get('site_frontpage', 'farm');
if (strpos($item['path'], $front) === 0 && count($active_trail) > 2) {
// If a link to the front page already exists in the second position, bail.
if (!empty($active_trail[1]['link_path']) && $active_trail[1]['link_path'] == $front) {
return;
}
// Add an item for the front page.
$start = array_shift($active_trail);
$front_item = menu_get_item($front);
array_unshift($active_trail, $front_item);
array_unshift($active_trail, $start);
}
}
/**
* Set the breadcrumb for an entity view page. This should be called in
* hook_entity_view().
*
* @param $entity_type
* The entity type.
* @param $bundle
* The entity bundle.
*
* @see farm_ui_entity_view()
*/
function farm_ui_entity_set_breadcrumb($entity_type, $bundle) {
// Get the breadcrumb from our helper function.
$breadcrumb = farm_ui_entity_type_breadcrumb($entity_type, $bundle);
// Add base breadcrumb items to the front.
$front = variable_get('site_frontpage', 'farm');
$front_item = menu_get_item($front);
$base = array(
l(t('Home'), '<front>'),
l($front_item['title'], $front),
);
$breadcrumb = array_merge($base, $breadcrumb);
// Set the breadcrumb.
drupal_set_breadcrumb($breadcrumb);
}
/**
* Build breadcrumbs for a specific entity type and bundle.
*
* @param $type
* The entity type.
* @param $bundle
* The bundle.
*
* @return array
* Returns a breadcrumb array.
*/
function farm_ui_entity_type_breadcrumb($type, $bundle) {
// Start an empty breadcrumb array.
$breadcrumb = array();
// Load entity UI information.
$ui_info = farm_ui_entities($type, $bundle);
// Get the label (plural). Bail if it's not set.
if (empty($ui_info['label_plural'])) {
return $breadcrumb;
}
$label = $ui_info['label_plural'];
// If the entity type has a View, load the path.
if (!empty($ui_info['view'])) {
$path = farm_ui_view_page_path($ui_info['view']);
}
// If this is a farm_asset entity, add a link to the full assets list.
if ($type == 'farm_asset') {
$breadcrumb[] = l(t('Assets'), 'farm/assets');
}
// Or, if this is a farm_plan entity, add a link to the full plans list.
elseif ($type == 'farm_plan') {
$breadcrumb[] = l(t('Plans'), 'farm/plans');
}
// Or, if this is a log entity, add a link to the full logs list.
elseif ($type == 'log') {
$breadcrumb[] = l(t('Logs'), 'farm/logs');
}
// If this is a taxonomy_term entity, and it is linked to a specific asset
// type, add the asset breadcrumb trail (recurse into this function again).
if ($type == 'taxonomy_term' && !empty($ui_info['farm_asset'])) {
$asset_breadcrumbs = farm_ui_entity_type_breadcrumb('farm_asset', $ui_info['farm_asset']);
$breadcrumb = array_merge($asset_breadcrumbs, $breadcrumb);
}
// If a path was found, add a link to the breadcrumb. Otherwise, add a simple
// text breadcrumb.
if (!empty($path)) {
$breadcrumb[] = l($label, $path);
}
else {
$breadcrumb[] = $label;
}
// If this is a taxonomy_term entity, get the default breadcrumb and tack it
// onto the end, so we can take advantage of the structure already provided
// by the taxonomy hierarchy. Shift the first item off (home) because we've
// started a new breadcrumb from scratch.
if ($type == 'taxonomy_term') {
$default_breadcrumb = drupal_get_breadcrumb();
array_shift($default_breadcrumb);
$breadcrumb = array_merge($breadcrumb, $default_breadcrumb);
}
// Return the breadcrumb.
return $breadcrumb;
}