Add support for backtab character.

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@31026 72102866-910b-0410-8b05-ffd578937521

Source/NSBrowser.m

@@ -2517,6 +2517,9 @@ static NSTextFieldCell *titleCell;
         case NSRightArrowFunctionKey:
           [self moveRight:self];
           return;
+        case NSBackTabCharacter:
+          [_window selectKeyViewPrecedingView: self];
+          return;
         case NSTabCharacter:
           {
             if ([theEvent modifierFlags] & NSShiftKeyMask)
@@ -2529,7 +2532,6 @@ static NSTextFieldCell *titleCell;
               }
           }
           return;
-          break;
         }
     }
 

Source/NSInputManager.m

@@ -39,7 +39,7 @@
 
 /* A table mapping character names to characters, used to interpret
    the character names found in KeyBindings dictionaries.  */
-#define CHARACTER_TABLE_SIZE 77
+#define CHARACTER_TABLE_SIZE 78
 
 static struct 
 {
@@ -125,6 +125,7 @@ character_table[CHARACTER_TABLE_SIZE] =
   /* Special characters by name.  Useful if you want, for example,
      to associate some special action to C-Tab or similar evils.  */
   { @"Backspace", NSBackspaceCharacter },
+  { @"BackTab", NSBackTabCharacter },
   { @"Tab", NSTabCharacter },
   { @"Enter", NSEnterCharacter },
   { @"FormFeed", NSFormFeedCharacter },
@@ -654,6 +655,10 @@ static NSInputManager *currentInputManager = nil;
           [self doCommandBySelector: @selector (cancelOperation:)];
           break;
 
+        case NSBackTabCharacter:
+          [self doCommandBySelector: @selector (insertBacktab:)];
+          break;
+
         case NSTabCharacter:
           if (flags & NSShiftKeyMask)
             {

Source/NSMatrix.m

@@ -2585,7 +2585,7 @@ static SEL getSel;
   unsigned int modifiers = [theEvent modifierFlags];
   int		i;
   unsigned int relevantModifiersMask = NSCommandKeyMask | NSAlternateKeyMask | NSControlKeyMask;
-  unichar key = ([keyEquivalent length] > 0 ? [keyEquivalent characterAtIndex:0] : 0);
+
   /* Take shift key into account only for control keys and arrow and function keys */
   if ((modifiers & NSFunctionKeyMask)
       || ([keyEquivalent length] > 0 && [[NSCharacterSet controlCharacterSet] characterIsMember:[keyEquivalent characterAtIndex:0]]))
@@ -3727,6 +3727,15 @@ static SEL getSel;
 	}
       return;
 
+    case NSBackTabCharacter:
+      if (_tabKeyTraversesCells)
+	{
+          if ([self _selectNextSelectableCellAfterRow: _selectedRow
+                                               column: _selectedColumn])
+            return;
+        }
+      break;
+
     case NSTabCharacter:
       if (_tabKeyTraversesCells)
 	{

Source/NSWindow.m

@@ -3218,6 +3218,13 @@ resetCursorRectsForView(NSView *theView)
       return;
     }
 
+  // If this is a BACKTAB event, move to the previous key view
+  if (character == NSTabCharacter)
+    {
+      [self selectPreviousKeyView: self];
+      return;
+    }
+
   // If this is a TAB or TAB+SHIFT event, move to the next key view
   if (character == NSTabCharacter)
     {