implement link open in the new tab on middle button click

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

@@ -9,6 +9,8 @@ use \GtkLabel;
 
 use \Yggverse\Yoda\Entity\Browser\Container\Page\Content;
 
+use \Yggverse\Net\Address;
+
 abstract class Markup
 {
     public GtkLabel $gtk;
@@ -121,4 +123,80 @@ abstract class Markup
     abstract public function set(
         string $value
     ): void;
+
+    // Tools
+    protected function _line(
+        int $offset
+    ): ?string
+    {
+        if (is_null($this->_source))
+        {
+            return null;
+        }
+
+        $start = strrpos(
+            substr(
+                $this->_source,
+                0,
+                $offset
+            ),
+            PHP_EOL
+        ) + 1;
+
+        $end = strpos(
+            $this->_source,
+            PHP_EOL,
+            $offset
+        );
+
+        if ($end === false)
+        {
+            $end = strlen(
+                $this->_source
+            );
+        }
+
+        return substr(
+            $this->_source,
+            $start,
+            $end - $start
+        );
+    }
+
+    protected function _wrap(
+        string $source
+    ): string
+    {
+        if ($wrap = $this->_wrap ? $this->_wrap : $this::WRAP)
+        {
+            return wordwrap(
+                $source,
+                $wrap,
+                PHP_EOL,
+                false
+            );
+        }
+
+        throw new Exception;
+    }
+
+    protected function _url(
+        string $link
+    ): ?string
+    {
+        $address = new Address(
+            $link
+        );
+
+        if ($address->isRelative())
+        {
+            $address->toAbsolute(
+                new Address(
+                    $this->content->page->navbar->request->getValue()
+                )
+            );
+        }
+
+        return $address->get();
+    }
 }

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

@@ -20,7 +20,8 @@ use \Yggverse\Gemtext\Entity\Listing;
 use \Yggverse\Gemtext\Entity\Quote;
 use \Yggverse\Gemtext\Entity\Text;
 
-use \Yggverse\Net\Address;
+use \Yggverse\Gemtext\Parser\Link as LinkParser;
+
 
 class Gemtext extends Markup
 {
@@ -287,18 +288,36 @@ class Gemtext extends Markup
         GdkEvent $event
     ): bool
     {
-        // Open link in new tab on middle button click
+        // Open link in the new tab on middle button click
         if ($event->button->button == Gdk::BUTTON_MIDDLE)
         {
+            // Detect cursor position
             $result = $label->get_layout()->xy_to_index(
                 $event->button->x * Pango::SCALE,
                 $event->button->y * Pango::SCALE
             );
 
+            // Position detected
             if ($result)
             {
-                // @TODO
-                return true;
+                // Get entire line from source
+                if ($line = $this->_line($result['index_']))
+                {
+                    // Parse gemtext href
+                    if ($href = LinkParser::getAddress($line))
+                    {
+                        // Format URL
+                        if ($url = $this->_url($href))
+                        {
+                            // Open
+                            $this->content->page->container->tab->append(
+                                $url
+                            );
+
+                            return true;
+                        }
+                    }
+                }
             }
         }
 
@@ -313,41 +332,4 @@ class Gemtext extends Markup
         // @TODO
         return false;
     }
-
-    private function _wrap(
-        string $source
-    ): string
-    {
-        if ($wrap = $this->_wrap ? $this->_wrap : $this::WRAP)
-        {
-            return wordwrap(
-                $source,
-                $wrap,
-                PHP_EOL,
-                false
-            );
-        }
-
-        throw new Exception;
-    }
-
-    private function _url(
-        string $link
-    ): ?string
-    {
-        $address = new Address(
-            $link
-        );
-
-        if ($address->isRelative())
-        {
-            $address->toAbsolute(
-                new Address(
-                    $this->content->page->navbar->request->getValue()
-                )
-            );
-        }
-
-        return $address->get();
-    }
 }