From e3d041f9644cec77b8516e3ae477728bfee4dd36 Mon Sep 17 00:00:00 2001
From: Tomas Zigo <50632337+tmszi@users.noreply.github.com>
Date: Thu, 22 Oct 2020 05:12:59 +0200
Subject: [PATCH] wxGUI/g.gui.iclass: fix copy vector features from vector map
 (#1020)

---
 gui/wxpython/iclass/digit.py | 26 +++++++++++++++++++-------
 gui/wxpython/iclass/frame.py |  2 +-
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/gui/wxpython/iclass/digit.py b/gui/wxpython/iclass/digit.py
index bd1a7f0234a..23e06c2b7df 100644
--- a/gui/wxpython/iclass/digit.py
+++ b/gui/wxpython/iclass/digit.py
@@ -129,13 +129,15 @@ def DeleteAreasByCat(self, cats):
         for cat in cats:
             Vedit_delete_areas_cat(self.poMapInfo, 1, cat)
 
-    def CopyMap(self, name, tmp=False):
+    def CopyMap(self, name, tmp=False, update=False):
         """Make a copy of open vector map
 
         Note: Attributes are not copied
 
         :param name: name for a copy
         :param tmp: True for temporary map
+        :param bool update: True if copy target vector map (poMapInfoNew)
+        exist
 
         :return: number of copied features
         :return: -1 on error
@@ -147,13 +149,23 @@ def CopyMap(self, name, tmp=False):
         poMapInfoNew = pointer(Map_info())
 
         if not tmp:
-            open_fn = Vect_open_new
+            if update:
+                open_fn = Vect_open_update
+            else:
+                open_fn = Vect_open_new
         else:
-            open_fn = Vect_open_tmp_new
-
-        is3D = bool(Vect_is_3d(self.poMapInfo))
-        if open_fn(poMapInfoNew, name, is3D) == -1:
-            return -1
+            if update:
+                open_fn = Vect_open_tmp_update
+            else:
+                open_fn = Vect_open_tmp_new
+
+        if update:
+            if open_fn(poMapInfoNew, name, '') == -1:
+                return -1
+        else:
+            is3D = bool(Vect_is_3d(self.poMapInfo))
+            if open_fn(poMapInfoNew, name, is3D) == -1:
+                return -1
 
         verbose = G_verbose()
         G_set_verbose(-1)      # be silent
diff --git a/gui/wxpython/iclass/frame.py b/gui/wxpython/iclass/frame.py
index 1e7264ce8a9..bd086b20765 100644
--- a/gui/wxpython/iclass/frame.py
+++ b/gui/wxpython/iclass/frame.py
@@ -615,7 +615,7 @@ def ImportAreas(self, vector):
         vname = self._getTempVectorName()
         # avoid deleting temporary map
         os.environ['GRASS_VECTOR_TEMPORARY'] = '1'
-        if digitClass.CopyMap(vname, tmp=True) == -1:
+        if digitClass.CopyMap(vname, tmp=True, update=True) == -1:
             GError(
                 parent=self,
                 message=_("Unable to copy vector features from <%s>") %