60 lines
1.9 KiB
PHP
60 lines
1.9 KiB
PHP
<?php
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/**
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* @file
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* Provides active menu item pruning.
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*/
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/**
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* Prune a tree so that it begins at the active menu item.
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*
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* @param $tree
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* array The menu tree to prune.
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* @param $level
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* string The level which the tree will be pruned to: 'active' or 'child'.
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* @return
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* void
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*/
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function _menu_tree_prune_active_tree(&$tree, $level) {
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do {
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$found_active_trail = FALSE;
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// Examine each element at this level for the active trail.
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foreach ($tree AS $key => &$value) {
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if ($tree[$key]['link']['in_active_trail']) {
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$found_active_trail = TRUE;
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// If the active trail item has children, examine them.
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if ($tree[$key]['below']) {
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// If we are pruning to the active menu item's level, check if this
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// is the active menu item by checking its children.
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if ($level == 'active') {
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foreach ($tree[$key]['below'] AS $child_key => &$value) {
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if ($tree[$key]['below'][$child_key]['link']['in_active_trail']) {
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// Get the title for the pruned tree.
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menu_block_set_title($tree[$key]['link']);
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$tree = $tree[$key]['below'];
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// Continue in the pruned tree.
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break 2;
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}
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}
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// If we've found the active item, we're done.
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break 2;
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}
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// Set the title for the pruned tree.
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menu_block_set_title($tree[$key]['link']);
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// If we are pruning to the children of the active menu item, just
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// prune the tree to the children of the item in the active trail.
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$tree = $tree[$key]['below'];
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// Continue in the pruned tree.
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break;
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}
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// If the active menu item has no children, we're done.
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else {
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if ($level == 'child') {
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$tree = array();
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}
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break 2;
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}
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}
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}
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} while ($found_active_trail);
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}
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