Fixed scrollbar behavior

.gitignore

@@ -25,6 +25,7 @@ tools.db
 .idea_bak
 **/*.prof
 **/*.db
+screenshot*
 
 # Created by .ignore support plugin (hsz.mobi)
 ### Python template

src/myfasthtml/assets/datagrid/datagrid.css

@@ -161,9 +161,10 @@
 .dt2-table {
     --color-border: color-mix(in oklab, var(--color-base-content) 20%, #0000);
     --color-resize: color-mix(in oklab, var(--color-base-content) 50%, #0000);
-    height: 100%;
+    height: fit-content;
+    max-height: 100%;
     display: grid;
-    grid-template-rows: auto 1fr auto; /* header, body, footer */
+    grid-template-rows: auto minmax(auto, 1fr) auto; /* header, body, footer */
     overflow-x: auto; /* Enable horizontal scroll */
     overflow-y: hidden; /* No vertical scroll on table */
     scrollbar-width: none; /* Firefox: hide scrollbar */
@@ -225,6 +226,11 @@
     width: 8px;
 }
 
+/* Extra row reserved when horizontal scrollbar is visible */
+.dt2-table.dt2-has-hscroll {
+    grid-template-rows: auto minmax(auto, 1fr) auto 8px; /* header, body, footer, scrollbar */
+}
+
 /* Horizontal scrollbar wrapper - bottom, full width minus vertical scrollbar */
 .dt2-scrollbars-horizontal-wrapper {
     left: 0;

src/myfasthtml/assets/datagrid/datagrid.js

@@ -225,6 +225,7 @@ function initDataGridScrollbars(gridId) {
       // PHASE 3: Write all DOM properties (already in RAF)
       verticalWrapper.style.display = isVerticalRequired ? "block" : "none";
       horizontalWrapper.style.display = isHorizontalRequired ? "block" : "none";
+      table.classList.toggle("dt2-has-hscroll", isHorizontalRequired && isVerticalRequired);
       verticalScrollbar.style.height = `${scrollbarHeight}px`;
       horizontalScrollbar.style.width = `${scrollbarWidth}px`;
       verticalScrollbar.style.top = `${verticalTop}px`;
@@ -631,7 +632,10 @@ function moveColumn(table, sourceColId, targetColId) {
 
 function updateDatagridSelection(datagridId) {
   const selectionManager = document.getElementById(`tsm_${datagridId}`);
-  if (!selectionManager) return;
+  if (!selectionManager) {
+    console.warn(`DataGrid selection manager not found for ${datagridId}`);
+    return;
+  }
 
   // Re-enable tooltips after drag
   const wrapper = document.getElementById(`tw_${datagridId}`);