fix: datatable-scroller width should update on recalculate (#79)

Author: chintankavathia

projects/ngx-datatable/src/lib/components/body/body.component.ts

@@ -269,8 +269,7 @@ export class DataTableBodyComponent implements OnInit, OnDestroy {
   @Input() set columns(val: any[]) {
     if (val !== this._columns) {
       this._columns = val;
-      const colsByPin = columnsByPin(val);
-      this.columnGroupWidths = columnGroupWidths(colsByPin, val);
+      this.updateColumnGroupWidths();
     }
   }
 
@@ -1012,4 +1011,9 @@ export class DataTableBodyComponent implements OnInit, OnDestroy {
     this._draggedRow = undefined;
     this._draggedRowElement = undefined;
   }
+
+  updateColumnGroupWidths() {
+    const colsByPin = columnsByPin(this._columns);
+    this.columnGroupWidths = columnGroupWidths(colsByPin, this._columns);
+  }
 }

projects/ngx-datatable/src/lib/components/datatable.component.ts

@@ -940,6 +940,11 @@ export class DatatableComponent implements OnInit, DoCheck, AfterViewInit, After
       adjustColumnWidths(columns, width);
     }
 
+    if (this.bodyComponent) {
+      this.bodyComponent.updateColumnGroupWidths();
+      this.bodyComponent.cd.markForCheck();
+    }
+
     return columns;
   }