Add helper functions to replace text styles and cell content

@@ -24,6 +24,10 @@ import 'text_style.dart';
 import 'theme.dart';
 import 'theme.dart';
 import 'widget.dart';
 import 'widget.dart';
 
 
+typedef OnCell = Widget? Function(int index, dynamic data, int rowNum);
+typedef OnCellTextStyle = TextStyle? Function(
+    int index, dynamic data, int rowNum);
+
 mixin TableHelper {
 mixin TableHelper {
   static TextAlign _textAlign(Alignment align) {
   static TextAlign _textAlign(Alignment align) {
     if (align.x == 0) {
     if (align.x == 0) {
@@ -71,6 +75,8 @@ mixin TableHelper {
     BoxDecoration? oddRowDecoration,
     BoxDecoration? oddRowDecoration,
     TextDirection? headerDirection,
     TextDirection? headerDirection,
     TextDirection? tableDirection,
     TextDirection? tableDirection,
+    OnCell? cellBuilder,
+    OnCellTextStyle? textStyleBuilder,
   }) {
   }) {
     assert(headerCount >= 0);
     assert(headerCount >= 0);
 
 
@@ -161,11 +167,14 @@ mixin TableHelper {
                   : cellDecoration(tableRow.length, cell, rowNum),
                   : cellDecoration(tableRow.length, cell, rowNum),
               child: cell is Widget
               child: cell is Widget
                   ? cell
                   ? cell
-                  : Text(
+                  : cellBuilder?.call(tableRow.length, cell, rowNum) ??
+                      Text(
                         cellFormat == null
                         cellFormat == null
                             ? cell.toString()
                             ? cell.toString()
                             : cellFormat(tableRow.length, cell),
                             : cellFormat(tableRow.length, cell),
-                      style: isOdd ? oddCellStyle : cellStyle,
+                        style: textStyleBuilder?.call(
+                                tableRow.length, cell, rowNum) ??
+                            (isOdd ? oddCellStyle : cellStyle),
                         textAlign: _textAlign(align.resolve(textDirection)),
                         textAlign: _textAlign(align.resolve(textDirection)),
                         textDirection: tableDirection,
                         textDirection: tableDirection,
                       ),
                       ),