Add PgUp/Dn/Home/End to menu, bugfixes

src/Editor/MessageBox.php

@@ -27,10 +27,26 @@ class MessageBox
 
     private int $scroll = 0;
 
+    /**
+     * constructor
+     *
+     * @param Terminal $terminal
+     * @param string $text
+     * @param string $title
+     */
     public function __construct(private Terminal $terminal, private string $text, private string $title = 'Message')
     {
     }
 
+    /**
+     * Display the message box
+     *
+     * @param int $left
+     * @param int $top
+     * @param int $width
+     * @param int $height
+     * @return void
+     */
     public function display(int $left, int $top, int $width, int $height = 0): void
     {
         $wrapped = explode("\n", wordwrap($this->text, $width - 4, cut_long_words:true));
@@ -76,6 +92,18 @@ class MessageBox
         return;
     }
 
+    /**
+     * Redraw the message box
+     *
+     * @param int $left
+     * @param int $top
+     * @param int $width
+     * @param int $height
+     * @param array $wrapped
+     * @param string $title
+     * @param int $maxScroll
+     * @return void
+     */
     private function redraw(int $left, int $top, int $width, int $height, array $wrapped, string $title, int $maxScroll) {
         $visibleItems = $height - 4;