From 32290a00d1ba050d46e6824d9446cbfae8418717 Mon Sep 17 00:00:00 2001
From: vv221 <vv221@dotslashplay.it>
Date: Fri, 3 Apr 2020 02:46:35 +0200
Subject: [PATCH] Ensure compatibility with "translate" plugin

cf. https://www.dokuwiki.org/plugin:translate
---
 MenuItem.php | 17 ++++++++++++++++-
 action.php   | 16 +++++++++++++---
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/MenuItem.php b/MenuItem.php
index 4a1011b..5b14b6c 100644
--- a/MenuItem.php
+++ b/MenuItem.php
@@ -20,7 +20,22 @@ class MenuItem extends AbstractItem {
 		$this->label = $label;
 		parent::__construct();
 		// Edit the item to show a link to the requested children page
-		$this->id = $this->type.':'.$INFO['id'];
+		if ( ! plugin_isdisabled('translate') ) {
+			// If the "translate" plugin is activated, the language code should stay the top-level namespace
+			$translate_plugin =& plugin_load('helper', 'translate');
+			$language = $translate_plugin->getPageLanguage();
+			if ( $language !== null && preg_match("/^$language:/", $INFO['id']) ) {
+				$this->id = preg_replace(
+					"/^$language:/",
+					"$language:".$this->type.':',
+					$INFO['id']
+				);
+			} else {
+				$this->id = $this->type.':'.$INFO['id'];
+			}
+		} else {
+			$this->id = $this->type.':'.$INFO['id'];
+		}
 		$this->params = [];
 	}
 }
diff --git a/action.php b/action.php
index 69d5190..23ae1ee 100644
--- a/action.php
+++ b/action.php
@@ -41,10 +41,20 @@ class action_plugin_childrenpages extends DokuWiki_Action_Plugin {
 		if ( $event->data['view'] !== 'page' ) {
 			return;
 		}
-		// Get the list of children pages
-		$children_types = $this->getConf('children_list');
 		// Only add links if the current page is not included in a reserved namespace
-		$top_namespace = explode(':', $INFO['namespace'])[0];
+		$children_types = $this->getConf('children_list');
+		if ( ! plugin_isdisabled('translate') ) {
+			// Skip top-level namespace added by "translate" plugin
+			$translate_plugin =& plugin_load('helper', 'translate');
+			$language = $translate_plugin->getPageLanguage();
+			if ( $language !== null && preg_match("/^$language:/", $INFO['id']) ) {
+				$top_namespace = explode(':', $INFO['namespace'])[1];
+			} else {
+				$top_namespace = explode(':', $INFO['namespace'])[0];
+			}
+		} else {
+			$top_namespace = explode(':', $INFO['namespace'])[0];
+		}
 		if ( in_array($top_namespace, $children_types) ) {
 			return;
 		}