From 6e2754020b1ba15d8c23035c66fd9ef6deb7b642 Mon Sep 17 00:00:00 2001
From: stefan schippers <stefan.schippers@gmail.com>
Date: Sat, 3 Jun 2023 09:37:43 +0200
Subject: [PATCH] added function swap_tabs() (wip)

---
 src/scheduler.c |  1 +
 src/xinit.c     | 33 +++++++++++++++++++++++++++++++++
 src/xschem.h    |  1 +
 3 files changed, 35 insertions(+)

diff --git a/src/scheduler.c b/src/scheduler.c
index d91c7efc..cb9da7ae 100644
--- a/src/scheduler.c
+++ b/src/scheduler.c
@@ -3751,6 +3751,7 @@ int xschem(ClientData clientdata, Tcl_Interp *interp, int argc, const char * arg
      *   testmode */
     else if(!strcmp(argv[1], "test"))
     {
+      swap_tabs(0, 1);
       Tcl_ResetResult(interp);
     }
 
diff --git a/src/xinit.c b/src/xinit.c
index 67d797e7..9c32717f 100644
--- a/src/xinit.c
+++ b/src/xinit.c
@@ -1179,6 +1179,39 @@ void preview_window(const char *what, const char *win_path, const char *fname)
   semaphore--;
 }
 
+
+void swap_tabs(int i, int j)
+{
+  int wc = window_count;
+  if(wc && j <=wc && i <= wc && j!=i) {
+    Xschem_ctx *ctx;
+    char *tmp;
+
+
+    tmp = save_xctx[i]->top_path;
+    save_xctx[i]->top_path = save_xctx[j]->top_path;
+    save_xctx[j]->top_path = tmp;
+
+    tmp = save_xctx[i]->current_win_path;
+    save_xctx[i]->current_win_path = save_xctx[j]->current_win_path;
+    save_xctx[j]->current_win_path = tmp;
+
+    ctx = save_xctx[i];
+    save_xctx[i] = save_xctx[j];
+    save_xctx[j] = ctx;
+   
+    /* update filenames on tab buttons */
+    ctx = xctx;
+    xctx = save_xctx[i];
+    set_modify(-1);
+    xctx = save_xctx[j];
+    set_modify(-1);
+    xctx = ctx;
+    set_modify(-1);
+  }
+}
+
+
 /* check if filename is already loaded into a tab or window */
 /* caller should supply a win_path string for storing matching window path */
 int check_loaded(const char *f, char *win_path)
diff --git a/src/xschem.h b/src/xschem.h
index 7b8ad4f7..f27ca91b 100644
--- a/src/xschem.h
+++ b/src/xschem.h
@@ -1332,6 +1332,7 @@ extern void mem_delete_undo(void);
 extern void mem_clear_undo(void);
 extern void load_schematic(int load_symbol, const char *fname, int reset_undo, int alert);
 /* check if filename already in an open window/tab */
+extern void swap_tabs(int i, int j);
 extern int check_loaded(const char *f, char *win_path);
 extern char *get_window_path(int i);
 extern int get_window_count(void);