1 files changed, 68 insertions, 1 deletions

diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index 8c0685b..feb360b 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -354,6 +354,71 @@ tui_set_var_cmd (char *null_args, int from_tty, struct cmd_list_element *c)
     tui_rehighlight_all ();
 }
 
+/* Complete possible window names to focus on.  TEXT is the complete text
+   entered so far, WORD is the word currently being completed.  */
+
+static VEC (char_ptr) *
+focus_completer (struct cmd_list_element *ignore,
+		  const char *text, const char *word)
+{
+  VEC (const_char_ptr) *completion_name_vec = NULL;
+  VEC (char_ptr) *matches_vec;
+  int win_type;
+
+  for (win_type = SRC_WIN; win_type < MAX_MAJOR_WINDOWS; win_type++)
+    {
+      const char *completion_name = NULL;
+
+      /* We can't focus on an invisible window.  */
+      if (tui_win_list[win_type] == NULL
+	  || !tui_win_list[win_type]->generic.is_visible)
+	continue;
+
+      switch (win_type)
+	{
+	case SRC_WIN:
+	  completion_name = "src";
+	  break;
+	case DISASSEM_WIN:
+	  completion_name = "asm";
+	  break;
+	case DATA_WIN:
+	  completion_name = "regs";
+	  break;
+	case CMD_WIN:
+	  completion_name = "cmd";
+	  break;
+	default:
+	  break;
+	}
+
+      if (completion_name != NULL)
+	VEC_safe_push (const_char_ptr, completion_name_vec, completion_name);
+    }
+
+  /* If no windows are considered visible then the TUI has not yet been
+     initialized.  But still "focus src" and "focus cmd" will work because
+     invoking the focus command will entail initializing the TUI which sets the
+     default layout to SRC_COMMAND.  */
+  if (VEC_length (const_char_ptr, completion_name_vec) == 0)
+    {
+      VEC_safe_push (const_char_ptr, completion_name_vec, "src");
+      VEC_safe_push (const_char_ptr, completion_name_vec, "cmd");
+    }
+
+  VEC_safe_push (const_char_ptr, completion_name_vec, "next");
+  VEC_safe_push (const_char_ptr, completion_name_vec, "prev");
+  VEC_safe_push (const_char_ptr, completion_name_vec, NULL);
+
+  matches_vec
+    = complete_on_enum (VEC_address (const_char_ptr, completion_name_vec),
+			text, word);
+
+  VEC_free (const_char_ptr, completion_name_vec);
+
+  return matches_vec;
+}
+
 /* Function to initialize gdb commands, for tui window
    manipulation.  */
 
@@ -365,6 +430,7 @@ _initialize_tui_win (void)
 {
   static struct cmd_list_element *tui_setlist;
   static struct cmd_list_element *tui_showlist;
+  struct cmd_list_element *focus_cmd;
 
   /* Define the classes of commands.
      They will appear in the help list in the reverse of this order.  */
@@ -393,7 +459,7 @@ regs : the register display\n"));
   add_com_alias ("wh", "winheight", class_tui, 0);
   add_info ("win", tui_all_windows_info,
 	    _("List of all displayed windows.\n"));
-  add_com ("focus", class_tui, tui_set_focus_command, _("\
+  focus_cmd = add_com ("focus", class_tui, tui_set_focus_command, _("\
 Set focus to named window or next/prev window.\n\
 Usage: focus {<win> | next | prev}\n\
 Valid Window names are:\n\
@@ -402,6 +468,7 @@ asm  : the disassembly window\n\
 regs : the register display\n\
 cmd  : the command window\n"));
   add_com_alias ("fs", "focus", class_tui, 0);
+  set_cmd_completer (focus_cmd, focus_completer);
   add_com ("+", class_tui, tui_scroll_forward_command, _("\
 Scroll window forward.\n\
 Usage: + [win] [n]\n"));