Hidden files in open browser, menu tweaks

* Add key callback for menus
* Use key callback to intercept ^H and toggle hidden files in browser

src/Editor/Menu.php

@@ -29,6 +29,8 @@ class Menu
 
     private int $scroll = 0;
 
+    private $keyhandler = null;
+
     /**
      * constructor
      *
@@ -41,6 +43,12 @@ class Menu
 
     }
 
+    public function setKeyhandler(?callable $handler): self
+    {
+        $this->keyhandler = $handler;
+        return $this;
+    }
+
     /**
      * Update the menu items
      *
@@ -77,7 +85,10 @@ class Menu
      */
     public function display(int $left, int $top, int $width, int $height = 0, string|int|null $value): mixed
     {
-        $this->index = 0;
+        //$this->index = 0;
+
+        $keys = array_keys($this->items);
+        $this->index = array_search($value, $keys) ?? 0;
 
         [$w,$h] = $this->terminal->getSize();
         if ($height == 0) {
@@ -97,6 +108,12 @@ class Menu
             while (null === ($ch = $this->terminal->readKey())) {
                 usleep(10000);
             }
+            if (is_callable($this->keyhandler)) {
+                $ret = call_user_func($this->keyhandler, $ch);
+                if ($ret === true) {
+                    return false;
+                }
+            }
             if (mb_strlen($ch) == 1) {
                 if ($ch == "\x03") {
                     $showing = false;