custom select all only for the code

src/main/resources/templates/paste.html

@@ -30,5 +30,24 @@
     </button>
 </div>
 </body>
-<script>hljs.highlightAll();</script>
+<script>
+    // Highlight the code block
+    hljs.highlightAll();
+
+    // Custom select all behavior to select all the content inside the <pre> block
+    document.addEventListener('keydown', function(event) {
+        if (event.ctrlKey && event.key === 'a') {
+            event.preventDefault(); // Prevent the default select all behavior
+
+            // Select all the content inside the <pre> block
+            const preBlock = document.querySelector('pre');
+            const range = document.createRange();
+            range.selectNodeContents(preBlock);
+
+            const selection = window.getSelection();
+            selection.removeAllRanges();
+            selection.addRange(range);
+        }
+    });
+</script>
 </html>