feat: Expand icon, filter theme props

src/App.tsx

@@ -421,6 +421,11 @@ const App: React.FC = () => {
     return <div>Custom Pagination </div>;
   };
 
+  // eslint-disable-next-line @typescript-eslint/no-unused-vars
+  const renderCustomExpandButton = () => {
+    return <div>➡</div>;
+  };
+
   return (
     <div className="app" style={{ backgroundColor: theme.colors?.background }}>
       <header

src/components/MultiLevelTable.tsx

@@ -42,6 +42,7 @@ interface MultiLevelTableProps {
   sortable?: boolean;
   ascendingIcon?: React.ReactNode;
   descendingIcon?: React.ReactNode;
+  expandIcon?: React.ReactNode;
 }
 
 /**
@@ -59,6 +60,7 @@ export const MultiLevelTable: React.FC<MultiLevelTableProps> = ({
   sortable = false,
   ascendingIcon,
   descendingIcon,
+  expandIcon,
 }) => {
   const mergedTheme = mergeThemeProps(defaultThemeProps, theme);
   const [filterInput, setFilterInput] = useState("");
@@ -184,6 +186,7 @@ export const MultiLevelTable: React.FC<MultiLevelTableProps> = ({
             onToggle={() => hasChildren && toggleRow(child.id)}
             level={level}
             theme={mergedTheme}
+            expandIcon={expandIcon}
           />
           {renderNestedRows(child.id, level + 1)}
         </React.Fragment>
@@ -216,6 +219,7 @@ export const MultiLevelTable: React.FC<MultiLevelTableProps> = ({
                   isExpanded={expandedRows.has(parentId)}
                   onToggle={() => hasChildren && toggleRow(parentId)}
                   theme={mergedTheme}
+                  expandIcon={expandIcon}
                 />
                 {renderNestedRows(parentId)}
               </React.Fragment>

src/components/TableCell.tsx

@@ -18,6 +18,7 @@ import '../styles/TableCell.css';
  * @property {() => void} onToggle - Function to toggle row expansion
  * @property {number} [paddingLeft=0] - Left padding for nested cells
  * @property {ThemeProps} theme - Theme properties
+ * @property {React.ReactNode} [expandIcon] - Custom expand icon
  */
 interface TableCellProps {
   cell: Cell<DataItem>;
@@ -26,6 +27,7 @@ interface TableCellProps {
   onToggle: () => void;
   paddingLeft?: number;
   theme: ThemeProps;
+  expandIcon?: React.ReactNode;
 }
 
 /**
@@ -40,7 +42,8 @@ export const TableCell: React.FC<TableCellProps> = ({
   isExpanded, 
   onToggle, 
   paddingLeft = 0,
-  theme 
+  theme,
+  expandIcon,
 }) => {
   const { key, ...cellProps } = cell.getCellProps();
 
@@ -67,7 +70,7 @@ export const TableCell: React.FC<TableCellProps> = ({
             onClick={handleExpandClick}
             className="expand-button"
           >
-            <ExpandIcon isExpanded={isExpanded} theme={theme} />
+            {expandIcon || <ExpandIcon isExpanded={isExpanded} theme={theme} />}
           </button>
         ) : <div className="expand-button" />}
         {cell.render('Cell')}

src/components/TableHeader.tsx

@@ -100,8 +100,9 @@ export const TableHeader: React.FC<TableHeaderProps> = ({
                             onChange={(e) => column.setFilter?.(e.target.value)}
                             placeholder={`Filter ${column.title || column.id}...`}
                             style={{
-                              color: theme.table?.header?.textColor,
-                              borderColor: theme.table?.header?.textColor,
+                              color: theme.table?.filter?.textColor,
+                              borderColor: theme.table?.filter?.borderColor,
+                              backgroundColor: theme.table?.filter?.background,
                             }}
                           />
                         </div>

src/components/TableRow.tsx

@@ -19,6 +19,7 @@ import "../styles/TableRow.css";
  * @property {() => void} onToggle - Function to toggle row expansion
  * @property {number} [level=0] - Nesting level of the row
  * @property {ThemeProps} theme - Theme properties
+ * @property {React.ReactNode} [expandIcon] - Custom expand icon
  */
 interface TableRowProps {
   row: Row<DataItem> | DataItem;
@@ -28,6 +29,7 @@ interface TableRowProps {
   onToggle: () => void;
   level?: number;
   theme: ThemeProps;
+  expandIcon?: React.ReactNode;
 }
 
 /**
@@ -44,6 +46,7 @@ export const TableRow: React.FC<TableRowProps> = ({
   onToggle,
   level = 0,
   theme,
+  expandIcon,
 }) => {
   const getRowClassName = () => {
     const classes = ["table-row"];
@@ -91,16 +94,15 @@ export const TableRow: React.FC<TableRowProps> = ({
             >
               <div className="table-cell-content">
                 {hasChildren && index === 0 ? (
-                  <button
-                    onClick={handleExpandClick}
-                    className="expand-button"
-                  >
-                    <ExpandIcon isExpanded={isExpanded} theme={theme} />
+                  <button onClick={handleExpandClick} className="expand-button">
+                    {expandIcon || (
+                      <ExpandIcon isExpanded={isExpanded} theme={theme} />
+                    )}
                   </button>
                 ) : (
                   <div className="expand-button" />
                 )}
-                {column.render
+                {column.render 
                   ? column.render(displayValue, dataItem)
                   : String(displayValue)}
               </div>
@@ -131,6 +133,7 @@ export const TableRow: React.FC<TableRowProps> = ({
           onToggle={onToggle}
           paddingLeft={level > 0 ? 32 + level * 16 : 0}
           theme={theme}
+          expandIcon={expandIcon}
         />
       ))}
     </tr>

src/defaultThemeProps.ts

@@ -2,27 +2,30 @@ import type { ThemeProps } from './types/theme';
 
 export const defaultThemeProps: ThemeProps = {
   colors: {
-    primaryColor: '#007bff',
-    textColor: '#212529',
-    borderColor: '#dee2e6',
     background: '#ffffff',
+    primaryColor: '#3498db',
+    borderColor: '#e0e0e0',
   },
   table: {
     header: {
-      background: '#e9ecef',
-      textColor: '#495057',
-      borderColor: '#dee2e6',
+      background: '#2c3e50',
+      textColor: '#ffffff',
     },
     row: {
       mainBackground: '#ffffff',
       nestedBackground: '#f8f9fa',
-      expandedBackground: '#e9ecef',
-      hoverBackground: '#f8f9fa',
+      expandedBackground: '#f1f3f5',
     },
     cell: {
-      textColor: '#212529',
-      borderColor: '#dee2e6',
-      nestedPadding: '1rem',
+      textColor: '#333333',
+      borderColor: '#e0e0e0',
+    },
+    filter: {
+      background: 'transparent',
+      textColor: '#ffffff',
+      borderColor: '#ffffff',
+      focusBorderColor: '#3498db',
+      placeholderColor: 'rgba(255, 255, 255, 0.7)',
     },
   },
   pagination: {

src/themes.ts

@@ -2,27 +2,30 @@ import type { ThemeProps } from './types/theme';
 
 export const lightTheme: ThemeProps = {
   colors: {
+    background: '#ffffff',
     primaryColor: '#007bff',
-    textColor: '#212529',
     borderColor: '#dee2e6',
-    background: '#ffffff',
   },
   table: {
     header: {
       background: '#e9ecef',
       textColor: '#495057',
+    },
+    cell: {
+      textColor: '#212529',
       borderColor: '#dee2e6',
     },
     row: {
       mainBackground: '#ffffff',
       nestedBackground: '#f8f9fa',
       expandedBackground: '#e9ecef',
-      hoverBackground: '#f8f9fa',
     },
-    cell: {
-      textColor: '#212529',
-      borderColor: '#dee2e6',
-      nestedPadding: '1rem',
+    filter: {
+      background: 'transparent',
+      textColor: '#495057',
+      borderColor: '#495057',
+      focusBorderColor: '#007bff',
+      placeholderColor: 'rgba(73, 80, 87, 0.7)',
     },
   },
   pagination: {
@@ -47,27 +50,30 @@ export const lightTheme: ThemeProps = {
 
 export const darkTheme: ThemeProps = {
   colors: {
+    background: '#212529',
     primaryColor: '#0d6efd',
-    textColor: '#ffffff',
     borderColor: '#495057',
-    background: '#212529',
   },
   table: {
     header: {
       background: '#2b3035',
       textColor: '#e9ecef',
+    },
+    cell: {
+      textColor: '#e9ecef',
       borderColor: '#495057',
     },
     row: {
       mainBackground: '#343a40',
       nestedBackground: '#2b3035',
       expandedBackground: '#212529',
-      hoverBackground: '#2b3035',
     },
-    cell: {
+    filter: {
+      background: 'transparent',
       textColor: '#e9ecef',
-      borderColor: '#495057',
-      nestedPadding: '1rem',
+      borderColor: '#e9ecef',
+      focusBorderColor: '#0d6efd',
+      placeholderColor: 'rgba(233, 236, 239, 0.7)',
     },
   },
   pagination: {

src/types/theme.ts

@@ -3,29 +3,32 @@ export type Theme = {
   light: ThemeProps;
 };
 
-export type ThemeProps = {
+export interface ThemeProps {
   colors?: {
+    background?: string;
     primaryColor?: string;
-    textColor?: string;
     borderColor?: string;
-    background?: string;
   };
   table?: {
     header?: {
       background?: string;
       textColor?: string;
+    };
+    cell?: {
+      textColor?: string;
       borderColor?: string;
     };
     row?: {
       mainBackground?: string;
       nestedBackground?: string;
       expandedBackground?: string;
-      hoverBackground?: string;
     };
-    cell?: {
+    filter?: {
+      background?: string;
       textColor?: string;
       borderColor?: string;
-      nestedPadding?: string;
+      focusBorderColor?: string;
+      placeholderColor?: string;
     };
   };
   pagination?: {
@@ -46,4 +49,4 @@ export type ThemeProps = {
   expandIcon?: {
     color?: string;
   };
-}; 
+}