Allow tracking codemirror's scroll offset within a dedicated input

diff --git a/wcfsetup/install/files/acp/templates/codemirror.tpl b/wcfsetup/install/files/acp/templates/codemirror.tpl
index fe7b64c74b73050e7ebc91688a31b131f1bdf342..5a27c7e6f730bdf61ad8e54d10af8edd06059982 100644 (file)
--- a/wcfsetup/install/files/acp/templates/codemirror.tpl
+++ b/wcfsetup/install/files/acp/templates/codemirror.tpl
@@ -106,6 +106,17 @@
                                        }
                                });
                        }
+                       
+                       var scrollOffsetStorage = element;
+                       do {
+                               scrollOffsetStorage = scrollOffsetStorage.nextElementSibling;
+                       } while (scrollOffsetStorage && !scrollOffsetStorage.classList.contains('codeMirrorScrollOffset'));
+                       if (scrollOffsetStorage) {
+                               element.codemirror.scrollTo(null, scrollOffsetStorage.value);
+                               element.codemirror.on('scroll', function (cm) {
+                                       scrollOffsetStorage.value = cm.getScrollInfo().top;
+                               });
+                       }
                });
        });
 </script>