Use a more reliable way to detect the current page, fixes #420

libs/Format/HTML/Generator.php

@@ -189,6 +189,8 @@ class Generator implements \Todaymade\Daux\Format\Base\Generator, LiveGenerator
                             return;
                         }
 
+                        $this->daux->tree->setActiveNode($node);
+
                         $generated = $this->generateOne($node, $params);
                         file_put_contents($output_dir . DIRECTORY_SEPARATOR . $key, $generated->getContent());
                         if ($index_pages) {

libs/Format/HTML/Template.php

@@ -119,18 +119,16 @@ class Template
                 $nav[] = [
                     'title' => $node->getTitle(),
                     'href' => $base_page . $link,
-                    'class' => $current_url === $link ? 'Nav__item--active' : '',
+                    'class' => $node->isHotPath() ? 'Nav__item--active' : '',
                 ];
             } elseif ($node instanceof Directory) {
                 if (!$node->hasContent()) {
                     continue;
                 }
 
-                $link = ($path === '') ? $url : $path . '/' . $url;
-
                 $folder = [
                     'title' => $node->getTitle(),
-                    'class' => strpos($current_url, $link) === 0 ? 'Nav__item--open' : '',
+                    'class' => $node->isHotPath() ? 'Nav__item--open' : '',
                 ];
 
                 if ($index = $node->getIndexPage()) {

libs/Server/Server.php

@@ -157,6 +157,8 @@ class Server
             throw new NotFoundException('The Page you requested is yet to be made. Try again later.');
         }
 
+        $this->daux->tree->setActiveNode($file);
+
         $generator = $this->daux->getGenerator();
 
         if (!$generator instanceof LiveGenerator) {

libs/Tree/Entry.php

@@ -189,4 +189,8 @@ abstract class Entry
             'path' => $this->path,
         ];
     }
+
+    public function isHotPath(Entry $node = null) {
+        return $this->parent->isHotPath($node ?: $this);
+    }
 }

libs/Tree/Root.php

@@ -7,6 +7,9 @@ class Root extends Directory
     /** @var Config */
     protected $config;
 
+    /** @var Entry */
+    protected $activeNode;
+
     /**
      * The root doesn't have a parent
      */
@@ -33,4 +36,30 @@ class Root extends Directory
     {
         $this->config = $config;
     }
+
+    public function isHotPath(Entry $node = null) {
+        if ($node == null) {
+            return true;
+        }
+
+        if ($this->activeNode == null) {
+            return false;
+        }
+
+        if ($node == $this->activeNode) {
+            return true;
+        }
+
+        foreach ($this->activeNode->getParents() as $parent) {
+            if ($node == $parent) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function setActiveNode(Entry $node) {
+        $this->activeNode = $node;
+    }
 }