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