From 62de0655d75d9d2e35fa7e7fbb87d27fc96a4b2c Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sun, 16 Nov 2014 19:13:06 +0100
Subject: [PATCH] + fix inconsistency problem after undo/redo

---
 src/Mod/Sketcher/Gui/TaskDlgEditSketch.cpp | 20 +++++++++++++++++++-
 src/Mod/Sketcher/Gui/TaskDlgEditSketch.h   | 13 +++++++++++--
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/src/Mod/Sketcher/Gui/TaskDlgEditSketch.cpp b/src/Mod/Sketcher/Gui/TaskDlgEditSketch.cpp
index cd0a003b7..d7d9850e9 100644
--- a/src/Mod/Sketcher/Gui/TaskDlgEditSketch.cpp
+++ b/src/Mod/Sketcher/Gui/TaskDlgEditSketch.cpp
@@ -24,6 +24,7 @@
 #include "PreCompiled.h"
 
 #ifndef _PreComp_
+# include <boost/bind.hpp>
 #endif
 
 #include "TaskDlgEditSketch.h"
@@ -46,16 +47,33 @@ TaskDlgEditSketch::TaskDlgEditSketch(ViewProviderSketch *sketchView)
     Elements = new TaskSketcherElements(sketchView);
     General  = new TaskSketcherGeneral(sketchView);
     Messages  = new TaskSketcherMessages(sketchView);
-    
+
     Content.push_back(Messages);
     Content.push_back(General);
     Content.push_back(Constraints);
     Content.push_back(Elements);
+
+    App::Document* document = sketchView->getObject()->getDocument();
+    connectUndoDocument =
+        document->signalUndo.connect(boost::bind(&TaskDlgEditSketch::slotUndoDocument, this, _1));
+    connectRedoDocument =
+        document->signalRedo.connect(boost::bind(&TaskDlgEditSketch::slotRedoDocument, this, _1));
 }
 
 TaskDlgEditSketch::~TaskDlgEditSketch()
 {
+    connectUndoDocument.disconnect();
+    connectRedoDocument.disconnect();
+}
 
+void TaskDlgEditSketch::slotUndoDocument(const App::Document& doc)
+{
+    const_cast<App::Document&>(doc).recomputeFeature(sketchView->getObject());
+}
+
+void TaskDlgEditSketch::slotRedoDocument(const App::Document& doc)
+{
+    const_cast<App::Document&>(doc).recomputeFeature(sketchView->getObject());
 }
 
 //==== calls from the TaskView ===============================================================
diff --git a/src/Mod/Sketcher/Gui/TaskDlgEditSketch.h b/src/Mod/Sketcher/Gui/TaskDlgEditSketch.h
index b1ec85303..445b84994 100644
--- a/src/Mod/Sketcher/Gui/TaskDlgEditSketch.h
+++ b/src/Mod/Sketcher/Gui/TaskDlgEditSketch.h
@@ -31,6 +31,9 @@
 #include "TaskSketcherElements.h"
 #include "TaskSketcherGeneral.h"
 #include "TaskSketcherMessages.h"
+#include <boost/signals.hpp>
+
+typedef boost::signals::connection Connection;
 
 namespace SketcherGui {
 
@@ -65,11 +68,17 @@ public:
     { return QDialogButtonBox::Close|QDialogButtonBox::Help; }
 
 protected:
-    ViewProviderSketch   *sketchView;
+    void slotUndoDocument(const App::Document&);
+    void slotRedoDocument(const App::Document&);
+
+protected:
+    ViewProviderSketch      *sketchView;
     TaskSketcherConstrains  *Constraints;
-    TaskSketcherElements *Elements;
+    TaskSketcherElements    *Elements;
     TaskSketcherGeneral     *General;
     TaskSketcherMessages    *Messages;
+    Connection connectUndoDocument;
+    Connection connectRedoDocument;
 };