implement viewport update method

src/Entity/Browser/Container/Page/Content.php

@@ -57,9 +57,6 @@ class Content
         $this->gtk->add(
             $this->viewport->gtk
         );
-
-        // Render
-        $this->gtk->show();
     }
 
     public function set(
@@ -115,11 +112,11 @@ class Content
                 );
         }
 
-        $this->viewport->gtk->add(
+        $this->viewport->set(
-            $document->gtk
+            $document
         );
 
-        //$this->gtk->show_all();
+        $this->gtk->show();
     }
 
     public function getSource(): ?string

src/Entity/Browser/Container/Page/Content/Viewport.php

@@ -4,21 +4,48 @@ declare(strict_types=1);
 
 namespace Yggverse\Yoda\Entity\Browser\Container\Page\Content;
 
+use \Yggverse\Yoda\Entity\Browser\Container\Page\Content;
+
+use \Yggverse\Yoda\Entity\Browser\Container\Page\Content\Gemtext;
+use \Yggverse\Yoda\Entity\Browser\Container\Page\Content\Image;
+use \Yggverse\Yoda\Entity\Browser\Container\Page\Content\Plain;
+
 class Viewport
 {
     public \GtkViewport $gtk;
 
     // Dependencies
-    public \Yggverse\Yoda\Entity\Browser\Container\Page\Content $content;
+    public Content $content;
+
+    // Requirements
+    private Gemtext | Plain | Image | null $_data = null;
 
     public function __construct(
-        \Yggverse\Yoda\Entity\Browser\Container\Page\Content $content
+        Content $content
     ) {
         // Init dependencies
         $this->content = $content;
 
         // Init viewport
         $this->gtk = new \GtkViewport;
+    }
+
+    public function set(
+        Gemtext | Plain | Image $data
+    ): void
+    {
+        // Remove previous
+        if ($this->_data)
+        {
+            $this->_data->gtk->destroy();
+        }
+
+        // Init current
+        $this->_data = $data;
+
+        $this->gtk->add(
+            $data->gtk
+        );
 
         // Render
         $this->gtk->show();