better multiselect of columns

packages/datalib/src/GridConfig.ts

@@ -20,7 +20,7 @@ export type GroupFunc = 'GROUP' | 'MAX' | 'MIN' | 'SUM' | 'AVG' | 'COUNT' | 'COU
 
 export interface GridConfig extends GridConfigColumns {
   filters: { [uniqueName: string]: string };
-  focusedColumn?: string;
+  focusedColumns?: string[];
   columnWidths: { [uniqueName: string]: number };
   sort: {
     uniqueName: string;
@@ -48,7 +48,7 @@ export function createGridConfig(): GridConfig {
     filters: {},
     columnWidths: {},
     sort: [],
-    focusedColumn: null,
+    focusedColumns: null,
     grouping: {},
     formFilterColumns: [],
   };

packages/datalib/src/GridDisplay.ts

@@ -104,10 +104,10 @@ export abstract class GridDisplay {
     this.includeInColumnSet('addedColumns', name, true);
   }
 
-  focusColumn(uniqueName: string) {
+  focusColumns(uniqueNames: string[]) {
     this.setConfig(cfg => ({
       ...cfg,
-      focusedColumn: uniqueName,
+      focusedColumns: uniqueNames,
     }));
   }
 
@@ -115,8 +115,8 @@ export abstract class GridDisplay {
     return false;
   }
 
-  get focusedColumn() {
-    return this.config.focusedColumn;
+  get focusedColumns() {
+    return this.config.focusedColumns;
   }
 
   get engine() {