Fix crach if exit with Esc key

slpkg/dialog_box.py

@@ -62,7 +62,7 @@ class DialogUtil(object):
         if code == "ok":
             self.unicode_to_string()
             return self.ununicode
-        if code == "cancel":
+        if code in ["cancel", "esc"]:
             self.exit()
 
     def buildlist(self, enabled):
@@ -84,7 +84,7 @@ class DialogUtil(object):
         if code == "ok":
             self.unicode_to_string()
             return self.ununicode
-        if code == "cancel":
+        if code in ["cancel", "esc"]:
             self.exit()
 
     def exit(self):

slpkg/repoenable.py

@@ -66,7 +66,10 @@ Keys: SPACE   select or deselect the highlighted repositories,
         text, title, backtitle, status = keys, "Repositories", "", False
         self.selected = DialogUtil(self.disabled, text, title, backtitle,
                                    status).buildlist(self.enabled)
-        self.update_repos()
+        if self.selected is not None:
+            self.update_repos()
+        else:
+            self.selected = self.enabled
         self.clear_screen()
         self.reference()
 

slpkg/sbo/network.py

@@ -294,9 +294,11 @@ class SBoNetwork(object):
             backtitle = "{0} {1}".format(_meta_.__all__, _meta_.__version__)
             status = False
             pkg = DialogUtil(data, text, title, backtitle, status).checklist()
-            if len(pkg) > 1:
+            if pkg and len(pkg) > 1:
                 print("\nslpkg: error: choose only one package")
                 raise SystemExit()
+            if pkg is None:
+                raise SystemExit()
             self.name = "".join(pkg)
             os.system("clear")
 

slpkg/upgrade_checklist.py

@@ -47,6 +47,7 @@ def choose_upg(packages):
         status = True
         pkgs = DialogUtil(data, text, title, backtitle,
                           status).checklist()
+        pkgs = [] if pkgs is None else pkgs
         for pkg in pkgs:
             name = split_package(pkg)[0]
             if name in packages: