[PATCH 26/66] Introduce set_new_height method

[Tom Tromey <tom at tromey dot com>]

This introduces tui_win_info::set_new_height and implements it in the
subclasses as appropriate.  This removes another switch on the window
type.

gdb/ChangeLog
2019-06-23  Tom Tromey  <tom@tromey.com>

	* tui/tui-win.c (tui_source_window_base::set_new_height)
	(tui_data_window::set_new_height): New methods.
	(make_invisible_and_set_new_height): Call set_new_height method.
	* tui/tui-data.h (struct tui_win_info)
	(struct tui_source_window_base, struct tui_data_window)
	<set_new_height>: New method.
---
 gdb/ChangeLog      |  9 ++++++
 gdb/tui/tui-data.h | 10 ++++++
 gdb/tui/tui-win.c  | 78 ++++++++++++++++++++++------------------------
 3 files changed, 57 insertions(+), 40 deletions(-)

diff --git a/gdb/tui/tui-data.h b/gdb/tui/tui-data.h
index e838c0e1622..e0d94d645be 100644
--- a/gdb/tui/tui-data.h
+++ b/gdb/tui/tui-data.h
@@ -267,6 +267,12 @@ public:
   {
   }
 
+  /* Called after a TUI window is given a new height; this updates any
+     related auxiliary windows.  */
+  virtual void set_new_height (int height)
+  {
+  }
+
   /* Methods to scroll the contents of this window.  Note that they
      are named with "_scroll" coming at the end because the more
      obvious "scroll_forward" is defined as a macro in term.h.  */
@@ -318,6 +324,8 @@ public:
   /* Set the location of the execution point.  */
   void set_is_exec_point_at (struct tui_line_or_address l);
 
+  void set_new_height (int height) override;
+
   /* Does locator belongs to this window?  */
   bool m_has_locator = false;
   /* Execution information window.  */
@@ -380,6 +388,8 @@ struct tui_data_window : public tui_win_info
   void clear_detail () override;
   void refresh_all () override;
 
+  void set_new_height (int height) override;
+
   /* Start of data display content.  */
   tui_win_content data_content = NULL;
   int data_content_count = 0;
diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index 383487e5f7a..fe1e901c741 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -1242,6 +1242,43 @@ tui_adjust_win_heights (struct tui_win_info *primary_win_info,
 }
 
 
+/* See tui-data.h.  */
+
+void
+tui_source_window_base::set_new_height (int height)
+{
+  tui_make_invisible (execution_info);
+  execution_info->height = height;
+  execution_info->origin.y = generic.origin.y;
+  if (height > 1)
+    execution_info->viewport_height = height - 1;
+  else
+    execution_info->viewport_height = height;
+  execution_info->viewport_height--;
+
+  if (has_locator ())
+    {
+      tui_gen_win_info *gen_win_info = tui_locator_win_info_ptr ();
+      tui_make_invisible (gen_win_info);
+      gen_win_info->origin.y = generic.origin.y + height;
+    }
+}
+
+/* See tui-data.h.  */
+
+void
+tui_data_window::set_new_height (int height)
+{
+  /* Delete all data item windows.  */
+  for (int i = 0; i < generic.content_size; i++)
+    {
+      struct tui_gen_win_info *gen_win_info
+	= &generic.content[i]->which_element.data_window;
+      tui_delete_win (gen_win_info->handle);
+      gen_win_info->handle = NULL;
+    }
+}
+
 /* Function make the target window (and auxillary windows associated
    with the targer) invisible, and set the new height and
    location.  */
@@ -1249,9 +1286,6 @@ static void
 make_invisible_and_set_new_height (struct tui_win_info *win_info, 
 				   int height)
 {
-  int i;
-  struct tui_gen_win_info *gen_win_info;
-
   tui_make_invisible (&win_info->generic);
   win_info->generic.height = height;
   if (height > 1)
@@ -1262,43 +1296,7 @@ make_invisible_and_set_new_height (struct tui_win_info *win_info,
     win_info->generic.viewport_height--;
 
   /* Now deal with the auxillary windows associated with win_info.  */
-  tui_source_window_base *base;
-  switch (win_info->generic.type)
-    {
-    case SRC_WIN:
-    case DISASSEM_WIN:
-      base = (tui_source_window_base *) win_info;
-      gen_win_info = base->execution_info;
-      tui_make_invisible (gen_win_info);
-      gen_win_info->height = height;
-      gen_win_info->origin.y = win_info->generic.origin.y;
-      if (height > 1)
-	gen_win_info->viewport_height = height - 1;
-      else
-	gen_win_info->viewport_height = height;
-      if (win_info != TUI_CMD_WIN)
-	gen_win_info->viewport_height--;
-
-      if (win_info->has_locator ())
-	{
-	  gen_win_info = tui_locator_win_info_ptr ();
-	  tui_make_invisible (gen_win_info);
-	  gen_win_info->origin.y = win_info->generic.origin.y + height;
-	}
-      break;
-    case DATA_WIN:
-      /* Delete all data item windows.  */
-      for (i = 0; i < win_info->generic.content_size; i++)
-	{
-	  gen_win_info
-	    = &win_info->generic.content[i]->which_element.data_window;
-	  tui_delete_win (gen_win_info->handle);
-	  gen_win_info->handle = NULL;
-	}
-      break;
-    default:
-      break;
-    }
+  win_info->set_new_height (height);
 }
 
 
-- 
2.17.2