Merge refresh and refresh_window methods

Earlier refactorings introduced the refresh and refresh_window
methods, following the previous TUI code.  However, these methods are
essentially the same, so this patch merges them.  It also removes some
redundant refresh_window calls, because the execution window is
updated automatically by the corresponding source (or disassembly)
window.

gdb/ChangeLog
2019-07-17  Tom Tromey  <tom@tromey.com>

	* tui/tui-winsource.c (tui_show_exec_info_content): Don't call
	refresh_window.
	* tui/tui-wingeneral.c (tui_gen_win_info::refresh_window): Call
	touchwin.
	(tui_data_window::refresh_window): Call refresh_window on data
	items.  Always call superclass refresh_window.
	(tui_win_info::refresh): Remove.
	(tui_source_window_base::refresh_window): Update.
	(tui_refresh_all): Update.
	* tui/tui-layout.c (show_source_disasm_command): Remove call to
	refresh_window.
	(show_source_or_disasm_and_command): Likewise.
	* tui/tui-data.h (struct tui_win_info) <refresh>: Remove.
	(struct tui_source_window_base) <refresh>: Likewise.

gdb/ChangeLog

@@ -1,3 +1,20 @@
+2019-07-17  Tom Tromey  <tom@tromey.com>
+
+	* tui/tui-winsource.c (tui_show_exec_info_content): Don't call
+	refresh_window.
+	* tui/tui-wingeneral.c (tui_gen_win_info::refresh_window): Call
+	touchwin.
+	(tui_data_window::refresh_window): Call refresh_window on data
+	items.  Always call superclass refresh_window.
+	(tui_win_info::refresh): Remove.
+	(tui_source_window_base::refresh_window): Update.
+	(tui_refresh_all): Update.
+	* tui/tui-layout.c (show_source_disasm_command): Remove call to
+	refresh_window.
+	(show_source_or_disasm_and_command): Likewise.
+	* tui/tui-data.h (struct tui_win_info) <refresh>: Remove.
+	(struct tui_source_window_base) <refresh>: Likewise.
+
 2019-07-17  Tom Tromey  <tom@tromey.com>
 
 	* tui/tui-winsource.c (tui_clear_source_content)

gdb/tui/tui-data.h

@@ -303,9 +303,6 @@ public:
     return false;
   }
 
-  /* Refresh this window and any associated windows.  */
-  virtual void refresh ();
-
   /* Called after all the TUI windows are refreshed, to let this
      window have a chance to update itself further.  */
   virtual void refresh_all ()
@@ -380,7 +377,7 @@ public:
   }
 
   void make_visible (bool visible) override;
-  void refresh () override;
+  void refresh_window () override;
   void refresh_all () override;
 
   /* Refill the source window's source cache and update it.  If this

gdb/tui/tui-layout.c

@@ -683,7 +683,6 @@ show_source_disasm_command (void)
 			      TUI_CMD_WIN->origin.y);
 	  tui_make_visible (TUI_CMD_WIN);
 	}
-      TUI_CMD_WIN->refresh_window ();
       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
     }
 }
@@ -924,7 +923,6 @@ show_source_or_disasm_and_command (enum tui_layout_type layout_type)
 	{
 	  tui_win_list[CMD_WIN] = make_command_window (cmd_height,
 						       src_height);
-	  TUI_CMD_WIN->refresh_window ();
 	}
       else
 	{

gdb/tui/tui-wingeneral.c

@@ -37,7 +37,10 @@ void
 tui_gen_win_info::refresh_window ()
 {
   if (handle != NULL)
-    wrefresh (handle);
+    {
+      touchwin (handle);
+      wrefresh (handle);
+    }
 }
 
 /* See tui-data.h.  */
@@ -49,12 +52,11 @@ tui_data_window::refresh_window ()
     {
       for (auto &&win : regs_content)
 	{
-	  if (win != NULL && win->handle != NULL)
-	    wrefresh (win->handle);
+	  if (win != NULL)
+	    win->refresh_window ();
 	}
     }
-  else
-    tui_gen_win_info::refresh_window ();
+  tui_gen_win_info::refresh_window ();
 }
 
 /* Function to delete the curses window, checking for NULL.  */
@@ -231,20 +233,10 @@ tui_make_all_invisible (void)
 /* See tui-data.h.  */
 
 void
-tui_win_info::refresh ()
+tui_source_window_base::refresh_window ()
 {
-  touchwin (handle);
-  refresh_window ();
-}
-
-/* See tui-data.h.  */
-
-void
-tui_source_window_base::refresh ()
-{
-  touchwin (execution_info->handle);
   execution_info->refresh_window ();
-  tui_win_info::refresh ();
+  tui_win_info::refresh_window ();
 }
 
 /* Function to refresh all the windows currently displayed.  */
@@ -257,13 +249,10 @@ tui_refresh_all ()
   for (tui_win_info *win_info : all_tui_windows ())
     {
       if (win_info->is_visible)
-	win_info->refresh ();
+	win_info->refresh_window ();
     }
   if (locator->is_visible)
-    {
-      touchwin (locator->handle);
-      locator->refresh_window ();
-    }
+    locator->refresh_window ();
 }
 
 

gdb/tui/tui-winsource.c

@@ -513,7 +513,6 @@ tui_show_exec_info_content (struct tui_source_window_base *win_info)
   const tui_exec_info_content *content = exec_info->get_content ();
 
   werase (exec_info->handle);
-  exec_info->refresh_window ();
   for (int cur_line = 1; cur_line <= win_info->content.size (); cur_line++)
     mvwaddstr (exec_info->handle,
 	       cur_line,