Added method [acceptsFirstResponder], which asks the cell if it

accepts first responder. Added [becomeFirstResponder] and
[resignFirstResponder] that redraw if the cell may change apprearance.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@16178 72102866-910b-0410-8b05-ffd578937521

Source/NSControl.m

@@ -479,6 +479,33 @@ static Class actionCellClass;
   [[self selectedCell] setRefusesFirstResponder: flag];
 }
 
+- (BOOL) acceptsFirstResponder
+{
+  return [[self selectedCell] acceptsFirstResponder];
+}
+
+- (BOOL) becomeFirstResponder
+{
+  if ([[self selectedCell] showsFirstResponder])
+    {
+      // As this may add a dotted border round our cell, redraw. 
+      [self setNeedsDisplay: YES];
+    }
+
+  return YES;
+}
+
+- (BOOL) resignFirstResponder
+{
+  if ([[self selectedCell] showsFirstResponder])
+    {
+      // As this may remove the dotted border round our cell, redraw. 
+      [self setNeedsDisplay: YES];
+    }
+
+  return YES;
+}
+
 /*
  * Tracking the Mouse
  */