Prevent link click navigation

Fixes #18

commander/gui/notebook.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import pathlib
 import logging
 import functools
+from PyQt6.QtWebEngineCore import QWebEngineNavigationRequest
 
 import nbconvert
 import nbformat
@@ -19,6 +20,7 @@ class NotebookView(QWebEngineView):
         super().__init__(parent)
         self.nodeid_to_tag = {}
         self._html_cache = {}
+        self.page().navigationRequested.connect(self._on_navigation_requested)
 
     def _render(self, path: pathlib.Path) -> str:
         key = (git.current_commit(), path)
@@ -33,6 +35,11 @@ class NotebookView(QWebEngineView):
         self._html_cache[key] = html
         return html
 
+    def _on_navigation_requested(self, request: QWebEngineNavigationRequest) -> None:
+        link_clicked = QWebEngineNavigationRequest.NavigationType.LinkClickedNavigation
+        if request.navigationType() == link_clicked:
+            request.reject()
+
     @pyqtSlot(pathlib.Path)
     def on_folder_changed(self, path: pathlib.Path) -> None:
         notebooks = list(path.glob('*.ipynb'))