1 files changed, 152 insertions, 0 deletions
diff --git a/mod/pages/lib/pages.php b/mod/pages/lib/pages.php
new file mode 100644
index 000000000..7f90d53d8
--- /dev/null
+++ b/mod/pages/lib/pages.php
@@ -0,0 +1,152 @@
+<?php
+/**
+ * Pages function library
+ */
+
+/**
+ * Prepare the add/edit form variables
+ *
+ * @param ElggObject $page
+ * @return array
+ */
+function pages_prepare_form_vars($page = null, $parent_guid = 0, $revision = null) {
+
+	// input names => defaults
+	$values = array(
+		'title' => '',
+		'description' => '',
+		'access_id' => ACCESS_DEFAULT,
+		'write_access_id' => ACCESS_DEFAULT,
+		'tags' => '',
+		'container_guid' => elgg_get_page_owner_guid(),
+		'guid' => null,
+		'entity' => $page,
+		'parent_guid' => $parent_guid,
+	);
+
+	if ($page) {
+		foreach (array_keys($values) as $field) {
+			if (isset($page->$field)) {
+				$values[$field] = $page->$field;
+			}
+		}
+	}
+
+	if (elgg_is_sticky_form('page')) {
+		$sticky_values = elgg_get_sticky_values('page');
+		foreach ($sticky_values as $key => $value) {
+			$values[$key] = $value;
+		}
+	}
+
+	elgg_clear_sticky_form('page');
+
+	// load the revision annotation if requested
+	if ($revision instanceof ElggAnnotation && $revision->entity_guid == $page->getGUID()) {
+		$values['description'] = $revision->value;
+	}
+
+	return $values;
+}
+
+/**
+ * Recurses the page tree and adds the breadcrumbs for all ancestors
+ *
+ * @param ElggObject $page Page entity
+ */
+function pages_prepare_parent_breadcrumbs($page) {
+	if ($page && $page->parent_guid) {
+		$parents = array();
+		$parent = get_entity($page->parent_guid);
+		while ($parent) {
+			array_push($parents, $parent);
+			$parent = get_entity($parent->parent_guid);
+		}
+		while ($parents) {
+			$parent = array_pop($parents);
+			elgg_push_breadcrumb($parent->title, $parent->getURL());
+		}
+	}
+}
+
+/**
+ * Produce the navigation tree
+ * 
+ * @param ElggEntity $container Container entity for the pages
+ */
+function pages_get_navigation_tree($container) {
+	if (!$container) {
+		return;
+	}
+
+	$top_pages = elgg_get_entities(array(
+		'type' => 'object',
+		'subtype' => 'page_top',
+		'container_guid' => $container->getGUID(),
+		'limit' => 0,
+	));
+
+	if (!$top_pages) {
+		return;
+	}
+	
+	$tree = array();
+	$depths = array();
+
+	foreach ($top_pages as $page) {
+		$tree[] = array(
+			'guid' => $page->getGUID(),
+			'title' => $page->title,
+			'url' => $page->getURL(),
+			'depth' => 0,
+		);
+		$depths[$page->guid] = 0;
+
+		$stack = array();
+		array_push($stack, $page);
+		while (count($stack) > 0) {
+			$parent = array_pop($stack);
+			$children = elgg_get_entities_from_metadata(array(
+				'type' => 'object',
+				'subtype' => 'page',
+				'metadata_name' => 'parent_guid',
+				'metadata_value' => $parent->getGUID(),
+				'limit' => 0,
+			));
+
+			if ($children) {
+				foreach ($children as $child) {
+					$tree[] = array(
+						'guid' => $child->getGUID(),
+						'title' => $child->title,
+						'url' => $child->getURL(),
+						'parent_guid' => $parent->getGUID(),
+						'depth' => $depths[$parent->guid] + 1,
+					);
+					$depths[$child->guid] = $depths[$parent->guid] + 1;
+					array_push($stack, $child);
+				}
+			}
+		}
+	}
+	return $tree;
+}
+
+/**
+ * Register the navigation menu
+ * 
+ * @param ElggEntity $container Container entity for the pages
+ */
+function pages_register_navigation_tree($container) {
+	$pages = pages_get_navigation_tree($container);
+	if ($pages) {
+		foreach ($pages as $page) {
+			elgg_register_menu_item('pages_nav', array(
+				'name' => $page['guid'],
+				'text' => $page['title'],
+				'href' => $page['url'],
+				'parent_name' => $page['parent_guid'],
+			));
+		}
+	}
+}