From 8a5c4a1a37d9eda84f99f622b56bc64ffd5cc2fb Mon Sep 17 00:00:00 2001
From: Roman Telezhynskyi <kroluku@gmail.com>
Date: Wed, 23 Nov 2016 18:50:52 +0200
Subject: [PATCH] Check if a path is valid. Should contains at least one
 object.

--HG--
branch : feature
---
 src/app/valentina/mainwindow.cpp              |  3 ++-
 .../vtools/dialogs/tools/dialogpiecepath.cpp  | 23 +++++++++++--------
 2 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/src/app/valentina/mainwindow.cpp b/src/app/valentina/mainwindow.cpp
index ec5234dbf..16c4dcb00 100644
--- a/src/app/valentina/mainwindow.cpp
+++ b/src/app/valentina/mainwindow.cpp
@@ -964,7 +964,8 @@ void MainWindow::ToolDetail(bool checked)
 void MainWindow::ToolPiecePath(bool checked)
 {
     ToolSelectAllDrawObjects();
-    SetToolButton<DialogPiecePath>(checked, Tool::PiecePath, "://cursor/path_cursor.png", tr("Select path objects."),
+    SetToolButton<DialogPiecePath>(checked, Tool::PiecePath, "://cursor/path_cursor.png",
+                                   tr("Select path objects, <b>Shift</b> - reverse direction curve"),
                                    &MainWindow::ClosedDialogPiecePath);
 }
 
diff --git a/src/libs/vtools/dialogs/tools/dialogpiecepath.cpp b/src/libs/vtools/dialogs/tools/dialogpiecepath.cpp
index d98a5ac1e..89fd992b8 100644
--- a/src/libs/vtools/dialogs/tools/dialogpiecepath.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogpiecepath.cpp
@@ -140,18 +140,21 @@ void DialogPiecePath::ShowDialog(bool click)
 {
     if (click == false)
     {
-        emit ToolTip("");
-        prepare = true;
-
-        if (not m_showMode)
+        if (CreatePath().CountNodes() > 0)
         {
-            auto visPath = qobject_cast<VisToolPiecePath *>(vis);
-            SCASSERT(visPath != nullptr);
-            visPath->SetMode(Mode::Show);
-            visPath->RefreshGeometry();
+            emit ToolTip("");
+            prepare = true;
+
+            if (not m_showMode)
+            {
+                auto visPath = qobject_cast<VisToolPiecePath *>(vis);
+                SCASSERT(visPath != nullptr);
+                visPath->SetMode(Mode::Show);
+                visPath->RefreshGeometry();
+            }
+            setModal(true);
+            show();
         }
-        setModal(true);
-        show();
     }
 }