Ticket #3453: Find file: show pattern and content in the results dialog title.

Initial step:
    * (dlg_set_title): new API.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

lib/widget/dialog.c

@@ -42,6 +42,7 @@
 #include "lib/strutil.h"
 #include "lib/fileloc.h"        /* MC_HISTORY_FILE */
 #include "lib/event.h"          /* mc_event_raise() */
+#include "lib/util.h"           /* MC_PTR_FREE */
 
 #include "lib/widget.h"
 #include "lib/widget/mouse.h"
@@ -653,6 +654,7 @@ dlg_default_repaint (WDialog * h)
 
     if (h->title != NULL)
     {
+        /* TODO: truncate long title */
         tty_setcolor (h->color[DLG_COLOR_TITLE]);
         widget_move (h, space, (wh->cols - str_term_width1 (h->title)) / 2);
         tty_print_string (h->title);
@@ -783,16 +785,7 @@ dlg_create (gboolean modal, int y1, int x1, int lines, int cols, widget_pos_flag
 
     new_d->mouse_status = MOU_UNHANDLED;
 
-    /* Strip existing spaces, add one space before and after the title */
-    if (title != NULL && *title != '\0')
-    {
-        char *t;
-
-        t = g_strstrip (g_strdup (title));
-        if (*t != '\0')
-            new_d->title = g_strdup_printf (" %s ", t);
-        g_free (t);
-    }
+    dlg_set_title (new_d, title);
 
     /* unique name of event group for this dialog */
     new_d->event_group = g_strdup_printf ("%s_%p", MCEVENT_GROUP_DIALOG, (void *) new_d);
@@ -1257,6 +1250,25 @@ dlg_save_history (WDialog * h)
 
 /* --------------------------------------------------------------------------------------------- */
 
+void
+dlg_set_title (WDialog * h, const char *title)
+{
+    MC_PTR_FREE (h->title);
+
+    /* Strip existing spaces, add one space before and after the title */
+    if (title != NULL && title[0] != '\0')
+    {
+        char *t;
+
+        t = g_strstrip (g_strdup (title));
+        if (t[0] != '\0')
+            h->title = g_strdup_printf (" %s ", t);
+        g_free (t);
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
 char *
 dlg_get_title (const WDialog * h, size_t len)
 {

lib/widget/dialog.h

@@ -131,6 +131,7 @@ void dlg_run_done (WDialog * h);
 void dlg_save_history (WDialog * h);
 void dlg_process_event (WDialog * h, int key, Gpm_Event * event);
 
+void dlg_set_title (WDialog * h, const char *title);
 char *dlg_get_title (const WDialog * h, size_t len);
 
 void dlg_redraw (WDialog * h);