Table: select all text in cell editor when starting editing using F2 key; can be disabled using Table.editorSelectAllOnStartEditing (issue 652)

also added missing `Table.paintOutsideAlternateRows`

flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableUI.java

@@ -24,15 +24,19 @@ import java.awt.EventQueue;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Insets;
+import java.awt.event.ActionEvent;
 import java.awt.event.FocusEvent;
 import java.awt.event.FocusListener;
 import java.awt.geom.Rectangle2D;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.util.Map;
+import javax.swing.Action;
+import javax.swing.ActionMap;
 import javax.swing.JComponent;
 import javax.swing.JScrollPane;
 import javax.swing.JTable;
+import javax.swing.JTextField;
 import javax.swing.JViewport;
 import javax.swing.LookAndFeel;
 import javax.swing.SwingConstants;
@@ -89,6 +93,7 @@ import com.formdev.flatlaf.util.UIScale;
  * @uiDefault Table.selectionInactiveBackground			Color
  * @uiDefault Table.selectionInactiveForeground			Color
  * @uiDefault Table.paintOutsideAlternateRows			boolean
+ * @uiDefault Table.editorSelectAllOnStartEditing		boolean
  *
  * <!-- FlatTableCellBorder -->
  *
@@ -284,6 +289,18 @@ public class FlatTableUI
 		};
 	}
 
+	@Override
+	protected void installKeyboardActions() {
+		super.installKeyboardActions();
+
+		if( UIManager.getBoolean( "Table.editorSelectAllOnStartEditing" ) ) {
+			// get shared action map, used for all tables
+			ActionMap map = SwingUtilities.getUIActionMap( table );
+			if( map != null )
+				StartEditingAction.install( map, "startEditing" );
+		}
+	}
+
 	/** @since 2 */
 	protected void installStyle() {
 		try {
@@ -579,4 +596,36 @@ public class FlatTableUI
 			selected = (value != null && (Boolean) value);
 		}
 	}
+
+	//---- class StartEditingAction -------------------------------------------
+
+	private static class StartEditingAction
+		extends FlatUIAction
+	{
+		static void install( ActionMap map, String key ) {
+			Action oldAction = map.get( key );
+			if( oldAction == null || oldAction instanceof StartEditingAction )
+				return; // not found or already installed
+
+			map.put( key, new StartEditingAction( oldAction ) );
+		}
+
+		private StartEditingAction( Action delegate ) {
+			super( delegate );
+		}
+
+		@Override
+		public void actionPerformed( ActionEvent e ) {
+			JTable table = (JTable) e.getSource();
+
+			Component oldEditorComp = table.getEditorComponent();
+
+			delegate.actionPerformed( e );
+
+			// select all text in editor if editing starts with F2 key
+			Component editorComp = table.getEditorComponent();
+			if( oldEditorComp == null && editorComp instanceof JTextField )
+				((JTextField)editorComp).selectAll();
+		}
+	}
 }

flatlaf-core/src/main/resources/com/formdev/flatlaf/FlatLaf.properties

@@ -739,6 +739,8 @@ Table.rowHeight = 20
 Table.showHorizontalLines = false
 Table.showVerticalLines = false
 Table.showTrailingVerticalLine = false
+Table.paintOutsideAlternateRows = false
+Table.editorSelectAllOnStartEditing = true
 Table.consistentHomeEndKeyBehavior = true
 Table.intercellSpacing = 0,0
 Table.scrollPaneBorder = com.formdev.flatlaf.ui.FlatScrollPaneBorder