Keep information about sibling node before delete detail.

--HG--
branch : develop

src/app/options.h

@@ -51,6 +51,7 @@ static const quint32 null_id = 0;
 #define SceneSize 50000
 #define DefPointRadius 2.0//mm
 #define NULL_ID null_id//use this value for initialization variables that keeps id values. 0 mean uknown id value.
+#define NULL_ID_STR "0"
 
 extern const QString nameRegExp;
 extern const QString degreeSymbol;

src/app/undocommands/deletedetail.cpp

@@ -32,7 +32,7 @@
 
 //---------------------------------------------------------------------------------------------------------------------
 DeleteDetail::DeleteDetail(VPattern *doc, quint32 id, QUndoCommand *parent)
-    : VUndoCommand(QDomElement(), doc, parent), parentNode(QDomNode())
+    : VUndoCommand(QDomElement(), doc, parent), parentNode(QDomNode()), siblingId(NULL_ID)
 {
     setText(tr("Delete tool"));
     nodeId = id;
@@ -41,6 +41,16 @@ DeleteDetail::DeleteDetail(VPattern *doc, quint32 id, QUndoCommand *parent)
     {
         xml = domElement.cloneNode().toElement();
         parentNode = domElement.parentNode();
+        QDomNode previousDetail = domElement.previousSibling();
+        if (previousDetail.isNull())
+        {
+            siblingId = NULL_ID;
+        }
+        else
+        {
+            // Better save id of previous detail instead of reference to node.
+            siblingId = doc->GetParametrUInt(previousDetail.toElement(), VPattern::AttrId, NULL_ID_STR);
+        }
     }
     else
     {
@@ -56,7 +66,7 @@ DeleteDetail::~DeleteDetail()
 //---------------------------------------------------------------------------------------------------------------------
 void DeleteDetail::undo()
 {
-    parentNode.appendChild(xml);
+    UndoDeleteAfterSibling(parentNode, siblingId);
     emit NeedFullParsing();
 }
 
@@ -68,14 +78,15 @@ void DeleteDetail::redo()
     {
         parentNode.removeChild(domElement);
 
-        //When UnionDetail delete detail we can't use FullParsing. So we hide detail on scene directly.
+        // UnionDetails delete two old details and create one new.
+        // So when UnionDetail delete detail we can't use FullParsing. So we hide detail on scene directly.
         QHash<quint32, VDataTool*>* tools = doc->getTools();
         SCASSERT(tools != nullptr);
         VToolDetail *toolDet = qobject_cast<VToolDetail*>(tools->value(nodeId));
         SCASSERT(toolDet != nullptr);
         toolDet->hide();
 
-        emit NeedFullParsing();
+        emit NeedFullParsing(); // Doesn't work when UnionDetail delete detail.
     }
     else
     {

src/app/undocommands/deletedetail.h

@@ -43,6 +43,7 @@ public:
 private:
     Q_DISABLE_COPY(DeleteDetail)
     QDomNode parentNode;
+    quint32 siblingId;
 };
 
 #endif // DELETEDETAIL_H

src/app/undocommands/deltool.cpp

@@ -33,7 +33,7 @@
 
 //---------------------------------------------------------------------------------------------------------------------
 DelTool::DelTool(VPattern *doc, quint32 id, QUndoCommand *parent)
-    : VUndoCommand(QDomElement(), doc, parent), parentNode(QDomNode()), cursor(NULL_ID)
+    : VUndoCommand(QDomElement(), doc, parent), parentNode(QDomNode()), siblingId(NULL_ID)
 {
     setText(tr("Delete tool"));
     nodeId = id;
@@ -46,12 +46,12 @@ DelTool::DelTool(VPattern *doc, quint32 id, QUndoCommand *parent)
         {
             if (i == 0)
             {
-                cursor = NULL_ID;
+                siblingId = NULL_ID;
             }
             else
             {
                 const VToolRecord tool = history.at(i-1);
-                cursor = tool.getId();
+                siblingId = tool.getId();
             }
         }
     }
@@ -76,18 +76,7 @@ DelTool::~DelTool()
 //---------------------------------------------------------------------------------------------------------------------
 void DelTool::undo()
 {
-    if (cursor == NULL_ID)
-    {
-        parentNode.appendChild(xml);
-    }
-    else
-    {
-        QDomElement refElement = doc->elementById(QString().setNum(cursor));
-        if (refElement.isElement())
-        {
-            parentNode.insertAfter(xml, refElement);
-        }
-    }
+    UndoDeleteAfterSibling(parentNode, siblingId);
     emit NeedFullParsing();
 }
 

src/app/undocommands/deltool.h

@@ -43,7 +43,7 @@ public:
 private:
     Q_DISABLE_COPY(DelTool)
     QDomNode parentNode;
-    quint32 cursor;
+    quint32 siblingId;
 };
 
 #endif // DELTOOL_H

src/app/undocommands/vundocommand.cpp

@@ -49,3 +49,24 @@ void VUndoCommand::RedoFullParsing()
     }
     redoFlag = true;
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+void VUndoCommand::UndoDeleteAfterSibling(QDomNode &parentNode, const quint32 &siblingId) const
+{
+    if (siblingId == NULL_ID)
+    {
+        parentNode.appendChild(xml);
+    }
+    else
+    {
+        const QDomElement refElement = doc->elementById(QString().setNum(siblingId));
+        if (refElement.isElement())
+        {
+            parentNode.insertAfter(xml, refElement);
+        }
+        else
+        {
+            qDebug()<<"Can't find sibling node.";
+        }
+    }
+}

src/app/undocommands/vundocommand.h

@@ -65,6 +65,7 @@ protected:
     quint32     nodeId;
     bool        redoFlag;
     void        RedoFullParsing();
+    void        UndoDeleteAfterSibling(QDomNode &parentNode, const quint32 &siblingId) const;
 private:
     Q_DISABLE_COPY(VUndoCommand)
 };

src/app/xml/vpattern.cpp

@@ -211,6 +211,7 @@ bool VPattern::GetActivDrawElement(QDomElement &element) const
                 }
             }
         }
+        element = QDomElement();
     }
     return false;
 }