Fixed issue #82. Fixed issue #83. Fixed issue #85.

--HG--
branch : develop

src/app/dialogs/app/dialogundo.cpp

@@ -0,0 +1,79 @@
+/************************************************************************
+ **
+ **  @file   dialogundo.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   23 6, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2014 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#include "dialogundo.h"
+#include "ui_dialogundo.h"
+#include "../../widgets/vapplication.h"
+#include "../../exception/vexceptionundo.h"
+#include <QCloseEvent>
+#include <QUndoStack>
+
+//---------------------------------------------------------------------------------------------------------------------
+DialogUndo::DialogUndo(QWidget *parent)
+    :QDialog(parent), ui(new Ui::DialogUndo), result(UndoButton::Cancel)
+{
+    ui->setupUi(this);
+
+    connect(ui->pushButtonUndo, &QPushButton::clicked, this, &DialogUndo::Undo);
+    connect(ui->pushButtonFix, &QPushButton::clicked, this, &DialogUndo::Fix);
+    connect(ui->pushButtonCancel, &QPushButton::clicked, this, &DialogUndo::Cancel);
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+DialogUndo::~DialogUndo()
+{
+    delete ui;
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogUndo::Undo()
+{
+    result = UndoButton::Undo;
+    accept();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogUndo::Fix()
+{
+    result = UndoButton::Fix;
+    accept();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogUndo::Cancel()
+{
+    result = UndoButton::Cancel;
+    reject();
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+void DialogUndo::closeEvent(QCloseEvent *event)
+{
+    Cancel();
+    event->accept();
+}

src/app/dialogs/app/dialogundo.h

@@ -0,0 +1,65 @@
+/************************************************************************
+ **
+ **  @file   dialogundo.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   23 6, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2014 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#ifndef DIALOGUNDO_H
+#define DIALOGUNDO_H
+
+#include <QDialog>
+
+namespace Ui
+{
+    class DialogUndo;
+}
+
+enum class UndoButton {Undo, Fix, Cancel};
+
+class DialogUndo : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit DialogUndo(QWidget *parent = 0);
+    UndoButton Result() const;
+    ~DialogUndo();
+public slots:
+    void Undo();
+    void Fix();
+    void Cancel();
+protected:
+    virtual void closeEvent ( QCloseEvent * event );
+private:
+    Q_DISABLE_COPY(DialogUndo)
+    Ui::DialogUndo *ui;
+    UndoButton result;
+};
+
+inline UndoButton DialogUndo::Result() const
+{
+    return result;
+}
+
+#endif // DIALOGUNDO_H

src/app/dialogs/app/dialogundo.ui

@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>DialogUndo</class>
+ <widget class="QDialog" name="DialogUndo">
+  <property name="windowModality">
+   <enum>Qt::WindowModal</enum>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>387</width>
+    <height>145</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Broken formula</string>
+  </property>
+  <property name="modal">
+   <bool>true</bool>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout_2">
+   <item>
+    <layout class="QVBoxLayout" name="verticalLayout">
+     <item>
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Error while calculation formula. You can try undo last operation or fix broken formula.</string>
+       </property>
+       <property name="wordWrap">
+        <bool>true</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <widget class="QPushButton" name="pushButtonUndo">
+         <property name="text">
+          <string>&amp;Undo</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="pushButtonFix">
+         <property name="text">
+          <string>&amp;Fix formula</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QPushButton" name="pushButtonCancel">
+         <property name="text">
+          <string>&amp;Cancel</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

src/app/dialogs/dialogs.pri

@@ -35,7 +35,8 @@ HEADERS += \
     dialogs/app/configpages/configurationpage.h \
     dialogs/app/configpages/patternpage.h \
     dialogs/app/configpages/communitypage.h \
-    dialogs/app/configpages/pathpage.h
+    dialogs/app/configpages/pathpage.h \
+    dialogs/app/dialogundo.h
 
 SOURCES += \
     dialogs/tools/dialogtriangle.cpp \
@@ -72,7 +73,8 @@ SOURCES += \
     dialogs/app/configpages/configurationpage.cpp \
     dialogs/app/configpages/patternpage.cpp \
     dialogs/app/configpages/communitypage.cpp \
-    dialogs/app/configpages/pathpage.cpp
+    dialogs/app/configpages/pathpage.cpp \
+    dialogs/app/dialogundo.cpp
 
 FORMS += \
     dialogs/tools/dialogtriangle.ui \
@@ -103,4 +105,5 @@ FORMS += \
     dialogs/app/dialogindividualmeasurements.ui \
     dialogs/app/dialogaboutapp.ui \
     dialogs/app/dialogpatternxmledit.ui \
-    dialogs/tools/dialogeditwrongformula.ui
+    dialogs/tools/dialogeditwrongformula.ui \
+    dialogs/app/dialogundo.ui

src/app/exception/exception.pri

@@ -4,7 +4,8 @@ HEADERS += \
     exception/vexceptionconversionerror.h \
     exception/vexceptionbadid.h \
     exception/vexception.h \
-    exception/vexceptionwrongid.h
+    exception/vexceptionwrongid.h \
+    exception/vexceptionundo.h
 
 SOURCES += \
     exception/vexceptionobjecterror.cpp \
@@ -12,4 +13,5 @@ SOURCES += \
     exception/vexceptionconversionerror.cpp \
     exception/vexceptionbadid.cpp \
     exception/vexception.cpp \
-    exception/vexceptionwrongid.cpp
+    exception/vexceptionwrongid.cpp \
+    exception/vexceptionundo.cpp

src/app/exception/vexceptionundo.cpp

@@ -0,0 +1,39 @@
+/************************************************************************
+ **
+ **  @file   vexceptionundo.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   23 6, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2014 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#include "vexceptionundo.h"
+
+//---------------------------------------------------------------------------------------------------------------------
+VExceptionUndo::VExceptionUndo(const QString &what)
+    :VException(what)
+{}
+
+//---------------------------------------------------------------------------------------------------------------------
+VExceptionUndo::VExceptionUndo(const VExceptionUndo &e)
+    :VException(e)
+{}

src/app/exception/vexceptionundo.h

@@ -0,0 +1,42 @@
+/************************************************************************
+ **
+ **  @file   vexceptionundo.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   23 6, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2014 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#ifndef VEXCEPTIONUNDO_H
+#define VEXCEPTIONUNDO_H
+
+#include "vexception.h"
+
+class VExceptionUndo : public VException
+{
+public:
+    VExceptionUndo(const QString &what);
+    VExceptionUndo(const VExceptionUndo &e);
+    virtual ~VExceptionUndo() noexcept (true){}
+};
+
+#endif // VEXCEPTIONUNDO_H

src/app/mainwindow.cpp

@@ -34,10 +34,12 @@
 #include "exception/vexceptionconversionerror.h"
 #include "exception/vexceptionemptyparameter.h"
 #include "exception/vexceptionwrongid.h"
+#include "exception/vexceptionundo.h"
 #include "version.h"
 #include "xml/vstandardmeasurements.h"
 #include "xml/vindividualmeasurements.h"
 #include "widgets/vapplication.h"
+#include "widgets/undoevent.h"
 
 #include <QInputDialog>
 #include <QtCore>
@@ -61,7 +63,7 @@ MainWindow::MainWindow(QWidget *parent)
       view(nullptr), isInitialized(false), dialogTable(0), dialogTool(nullptr), dialogHistory(nullptr),
       comboBoxDraws(nullptr), curFile(QString()), mode(Draw::Calculation), currentDrawIndex(0),
       currentToolBoxIndex(0), drawMode(true), recentFileActs{0, 0, 0, 0, 0}, separatorAct(nullptr),
-      autoSaveTimer(nullptr)
+      autoSaveTimer(nullptr), guiEnabled(true)
 {
     CreateActions();
     CreateMenus();
@@ -98,6 +100,7 @@ MainWindow::MainWindow(QWidget *parent)
     connect(doc, &VPattern::ClearMainWindow, this, &MainWindow::Clear);
     connect(doc, &VPattern::patternChanged, this, &MainWindow::PatternWasModified);
     connect(doc, &VPattern::UndoCommand, this, &MainWindow::FullParseFile);
+    connect(doc, &VPattern::SetEnabledGUI, this, &MainWindow::SetEnabledGUI);
 
     connect(qApp->getUndoStack(), &QUndoStack::cleanChanged, this, &MainWindow::PatternWasModified);
 
@@ -968,6 +971,15 @@ void MainWindow::closeEvent(QCloseEvent *event)
     }
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void MainWindow::customEvent(QEvent *event)
+{
+    if(event->type() == UNDO_EVENT)
+    {
+        qApp->getUndoStack()->undo();
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ToolBarOption enable option toolbar.
@@ -1532,36 +1544,45 @@ void MainWindow::FullParseFile()
 {
     try
     {
+        SetEnabledGUI(true);
         doc->Parse(Document::FullParse);
     }
+    catch (const VExceptionUndo &e)
+    {
+        Q_UNUSED(e);
+        /* If user want undo last operation before undo we need finish broken redo operation. For those we post event
+         * myself. Later in method customEvent call undo.*/
+        QApplication::postEvent(this, new UndoEvent());
+        return;
+    }
     catch (const VExceptionObjectError &e)
     {
         e.CriticalMessageBox(tr("Error parsing file."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionConversionError &e)
     {
         e.CriticalMessageBox(tr("Error can't convert value."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionEmptyParameter &e)
     {
         e.CriticalMessageBox(tr("Error empty parameter."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionWrongId &e)
     {
         e.CriticalMessageBox(tr("Error wrong id."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
     catch (VException &e)
     {
         e.CriticalMessageBox(tr("Error parsing file."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
     catch (const std::bad_alloc &)
@@ -1574,7 +1595,7 @@ void MainWindow::FullParseFile()
 #ifndef QT_NO_CURSOR
         QApplication::setOverrideCursor(Qt::WaitCursor);
 #endif
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
 
@@ -1606,13 +1627,13 @@ void MainWindow::FullParseFile()
     catch (VExceptionBadId &e)
     {
         e.CriticalMessageBox(tr("Bad id."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionEmptyParameter &e)
     {
         e.CriticalMessageBox(tr("Error empty parameter."), this);
-        Clear();
+        SetEnabledGUI(false);
         return;
     }
 
@@ -1627,6 +1648,43 @@ void MainWindow::FullParseFile()
     SetEnableWidgets(true);
 }
 
+
+//---------------------------------------------------------------------------------------------------------------------
+void MainWindow::SetEnabledGUI(bool enabled)
+{
+    if (guiEnabled != enabled)
+    {
+        if (enabled == false)
+        {
+            CancelTool();
+        }
+        comboBoxDraws->setEnabled(enabled);
+        ui->actionOptionDraw->setEnabled(enabled);
+        ui->actionSave->setEnabled(enabled);
+        ui->actionSaveAs->setEnabled(enabled);
+        ui->actionPattern_properties->setEnabled(enabled);
+        ui->actionEdit_pattern_code->setEnabled(enabled);
+        ui->actionZoomIn->setEnabled(enabled);
+        ui->actionZoomOut->setEnabled(enabled);
+        ui->actionArrowTool->setEnabled(enabled);
+        ui->actionHistory->setEnabled(enabled);
+        ui->actionNewDraw->setEnabled(enabled);
+        ui->actionDraw->setEnabled(enabled);
+        ui->actionDetails->setEnabled(enabled);
+        ui->actionTable->setEnabled(enabled);
+        guiEnabled = enabled;
+
+        sceneDraw->SetDisable(!enabled);
+        view->setEnabled(enabled);
+
+        SetEnableTool(enabled);
+        ui->toolBarOption->setEnabled(enabled);
+    #ifndef QT_NO_CURSOR
+        QApplication::setOverrideCursor(Qt::ArrowCursor);
+    #endif
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief NewPattern create new empty pattern.
@@ -1646,10 +1704,13 @@ void MainWindow::NewPattern()
  * @brief haveChange enable action save if we have unsaved change.
  */
 void MainWindow::PatternWasModified(bool saved)
+{
+    if (guiEnabled)
     {
         setWindowModified(!saved);
         ui->actionSave->setEnabled(!saved);
     }
+}
 
 //---------------------------------------------------------------------------------------------------------------------
 /**

src/app/mainwindow.h

@@ -142,6 +142,7 @@ public slots:
      */
     void               EditPatternCode();
     void               FullParseFile();
+    void               SetEnabledGUI(bool enabled);
 signals:
     /**
      * @brief ModelChosen emit after calculation all details.
@@ -153,6 +154,7 @@ protected:
     virtual void       keyPressEvent ( QKeyEvent * event );
     virtual void       showEvent( QShowEvent *event );
     virtual void       closeEvent( QCloseEvent * event );
+    virtual void       customEvent(QEvent * event);
 private:
     Q_DISABLE_COPY(MainWindow)
     /** @brief ui keeps information about user interface */
@@ -214,6 +216,7 @@ private:
     QAction            *recentFileActs[MaxRecentFiles];
     QAction            *separatorAct;
     QTimer             *autoSaveTimer;
+    bool               guiEnabled;
     void               ToolBarOption();
     void               ToolBarDraws();
     void               ToolBarZoom();

src/app/tools/drawTools/vabstractspline.cpp

@@ -47,6 +47,12 @@ void VAbstractSpline::FullUpdateFromFile()
     RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VAbstractSpline::Disable(bool disable)
+{
+    DisableItem(this, disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ChangedActivDraw disable or enable context menu after change active pattern peace.

src/app/tools/drawTools/vabstractspline.h

@@ -41,6 +41,7 @@ public:
     static const QString TagName;
 public slots:
     virtual void     FullUpdateFromFile ();
+    void             Disable(bool disable);
 signals:
     /**
      * @brief RefreshLine refresh control line.

src/app/tools/drawTools/vdrawtool.cpp

@@ -30,9 +30,11 @@
 
 #include <qmuparsererror.h>
 #include "dialogs/tools/dialogeditwrongformula.h"
+#include "dialogs/app/dialogundo.h"
 #include "container/calculator.h"
 #include "../../undocommands/addtocalc.h"
 #include "../../undocommands/savetooloptions.h"
+#include "../../exception/vexceptionundo.h"
 
 qreal VDrawTool::factor = 1;
 
@@ -193,17 +195,27 @@ qreal VDrawTool::CheckFormula(QString &formula, VContainer *data)
     {
         Q_UNUSED(e)
         delete cal;
+
+        DialogUndo *dialogUndo = new DialogUndo();
+        if (dialogUndo->exec() == QDialog::Accepted)
+        {
+            UndoButton resultUndo = dialogUndo->Result();
+            delete dialogUndo;
+            if (resultUndo == UndoButton::Fix)
+            {
                 DialogEditWrongFormula *dialog = new DialogEditWrongFormula(data);
                 dialog->setFormula(formula);
                 if (dialog->exec() == QDialog::Accepted)
                 {
                     formula = dialog->getFormula();
-            //Need delete dialog here because parser in dialog don't allow use correct separator for parsing here.
+                    /* Need delete dialog here because parser in dialog don't allow use correct separator for parsing
-            //Don't know why.
+                     * here.
+                     * Don't know why. */
                     delete dialog;
                     Calculator *cal1 = new Calculator(data);
                     result = cal1->EvalFormula(formula);
-            delete cal1;//Here can be memory leak, but dialog already check this formula and probability very low.
+                    delete cal1; /* Here can be memory leak, but dialog already check this formula and probability
+                                  * very low. */
                 }
                 else
                 {
@@ -211,6 +223,18 @@ qreal VDrawTool::CheckFormula(QString &formula, VContainer *data)
                     throw;
                 }
             }
+            else
+            {
+                QString what = QString("Undo wrong formula %1").arg(formula);
+                throw VExceptionUndo(what);
+            }
+        }
+        else
+        {
+            delete dialogUndo;
+            throw;
+        }
+    }
     return result;
 }
 

src/app/tools/drawTools/vdrawtool.h

@@ -165,6 +165,20 @@ protected:
             item->setPen(QPen(currentColor, qApp->toPixel(qApp->widthHairLine())/factor));
         }
     }
+    template <typename Item>
+    void DisableItem(Item *item, bool disable)
+    {
+        SCASSERT(item != nullptr);
+        if (disable)
+        {
+            currentColor = Qt::gray;
+        }
+        else
+        {
+            currentColor = baseColor;
+        }
+        item->setPen(QPen(currentColor, qApp->toPixel(qApp->widthHairLine())/factor));
+    }
 private:
     Q_DISABLE_COPY(VDrawTool)
 };

src/app/tools/drawTools/vtoolalongline.cpp

@@ -280,6 +280,7 @@ VToolAlongLine* VToolAlongLine::Create(const quint32 _id, const QString &pointNa
         scene->addItem(point);
         connect(point, &VToolAlongLine::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolAlongLine::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolAlongLine::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(firstPointId);
         doc->IncrementReferens(secondPointId);

src/app/tools/drawTools/vtoolarc.cpp

@@ -157,6 +157,7 @@ VToolArc* VToolArc::Create(const quint32 _id, const quint32 &center, QString &ra
         VToolArc *toolArc = new VToolArc(doc, data, id, typeCreation);
         scene->addItem(toolArc);
         connect(toolArc, &VToolArc::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
+        connect(scene, &VMainGraphicsScene::DisableItem, toolArc, &VToolArc::Disable);
         doc->AddTool(id, toolArc);
         doc->IncrementReferens(center);
         return toolArc;
@@ -220,6 +221,12 @@ void VToolArc::SetFactor(qreal factor)
     RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VToolArc::Disable(bool disable)
+{
+    DisableItem(this, disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief contextMenuEvent handle context menu events.

src/app/tools/drawTools/vtoolarc.h

@@ -53,6 +53,7 @@ public slots:
     virtual void     ChangedActivDraw(const QString &newName);
     virtual void     ShowTool(quint32 id, Qt::GlobalColor color, bool enable);
     virtual void     SetFactor(qreal factor);
+    void             Disable(bool disable);
 protected:
     virtual void     contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     virtual void     AddToFile();

src/app/tools/drawTools/vtoolbisector.cpp

@@ -194,8 +194,9 @@ VToolBisector* VToolBisector::Create(const quint32 _id, QString &formula, const
         VToolBisector *point = new VToolBisector(doc, data, id, typeLine, formula, firstPointId, secondPointId,
                                                  thirdPointId, typeCreation);
         scene->addItem(point);
-        connect(point, &VToolBisector::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
+        connect(point, &VToolPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolBisector::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(firstPointId);
         doc->IncrementReferens(secondPointId);

src/app/tools/drawTools/vtoolcutarc.cpp

@@ -187,7 +187,8 @@ VToolCutArc* VToolCutArc::Create(const quint32 _id, const QString &pointName, QS
         VToolCutArc *point = new VToolCutArc(doc, data, id, formula, arcId, arc1id, arc2id, typeCreation);
         scene->addItem(point);
         connect(point, &VToolPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
-        connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPoint::SetFactor);
+        connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolCutArc::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->AddTool(arc1id, point);
         doc->AddTool(arc2id, point);

src/app/tools/drawTools/vtoolcutspline.cpp

@@ -181,7 +181,8 @@ void VToolCutSpline::Create(const quint32 _id, const QString &pointName, QString
         VToolCutSpline *point = new VToolCutSpline(doc, data, id, formula, splineId, spl1id, spl2id, typeCreation);
         scene->addItem(point);
         connect(point, &VToolPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
-        connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPoint::SetFactor);
+        connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolCutSpline::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->AddTool(spl1id, point);
         doc->AddTool(spl2id, point);

src/app/tools/drawTools/vtoolcutsplinepath.cpp

@@ -237,6 +237,7 @@ void VToolCutSplinePath::Create(const quint32 _id, const QString &pointName, QSt
         scene->addItem(point);
         connect(point, &VToolPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPoint::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->AddTool(splPath1id, point);
         doc->AddTool(splPath2id, point);

src/app/tools/drawTools/vtoolendline.cpp

@@ -162,6 +162,7 @@ VToolEndLine* VToolEndLine::Create(const quint32 _id, const QString &pointName,
         scene->addItem(point);
         connect(point, &VToolPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPoint::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(basePointId);
         return point;

src/app/tools/drawTools/vtoolheight.cpp

@@ -156,6 +156,7 @@ void VToolHeight::Create(const quint32 _id, const QString &pointName, const QStr
         scene->addItem(point);
         connect(point, &VToolPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPoint::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(basePointId);
         doc->IncrementReferens(p1LineId);

src/app/tools/drawTools/vtoolline.cpp

@@ -147,6 +147,7 @@ void VToolLine::Create(const quint32 &_id, const quint32 &firstPoint, const quin
         scene->addItem(line);
         connect(line, &VToolLine::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, line, &VToolLine::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, line, &VToolLine::Disable);
         doc->AddTool(id, line);
         doc->IncrementReferens(firstPoint);
         doc->IncrementReferens(secondPoint);
@@ -185,6 +186,12 @@ void VToolLine::SetFactor(qreal factor)
     RefreshGeometry();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VToolLine::Disable(bool disable)
+{
+    DisableItem(this, disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ChangedActivDraw disable or enable context menu after change active pattern peace.

src/app/tools/drawTools/vtoolline.h

@@ -52,6 +52,7 @@ public slots:
     virtual void     ChangedActivDraw(const QString &newName);
     virtual void     ShowTool(quint32 id, Qt::GlobalColor color, bool enable);
     virtual void     SetFactor(qreal factor);
+    void             Disable(bool disable);
 protected:
     virtual void     contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     virtual void     AddToFile();

src/app/tools/drawTools/vtoollineintersect.cpp

@@ -165,6 +165,7 @@ void VToolLineIntersect::Create(const quint32 _id, const quint32 &p1Line1Id, con
             scene->addItem(point);
             connect(point, &VToolLineIntersect::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
             connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolLineIntersect::SetFactor);
+            connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
             doc->AddTool(id, point);
             doc->IncrementReferens(p1Line1Id);
             doc->IncrementReferens(p2Line1Id);

src/app/tools/drawTools/vtoolnormal.cpp

@@ -165,6 +165,7 @@ VToolNormal* VToolNormal::Create(const quint32 _id, QString &formula, const quin
         scene->addItem(point);
         connect(point, &VToolNormal::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolNormal::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(firstPointId);
         doc->IncrementReferens(secondPointId);

src/app/tools/drawTools/vtoolpoint.cpp

@@ -156,6 +156,12 @@ void VToolPoint::ShowContextMenu(QGraphicsSceneContextMenuEvent *event)
     Q_UNUSED(event);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VToolPoint::Disable(bool disable)
+{
+    DisableItem(this, disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief mouseReleaseEvent  handle mouse release events.

src/app/tools/drawTools/vtoolpoint.h

@@ -51,6 +51,7 @@ public slots:
     virtual void            ShowTool(quint32 id, Qt::GlobalColor color, bool enable);
     virtual void            SetFactor(qreal factor);
     virtual void            ShowContextMenu(QGraphicsSceneContextMenuEvent *event);
+    void                    Disable(bool disable);
 protected:
     /** @brief radius radius circle. */
     qreal                   radius;

src/app/tools/drawTools/vtoolpointofcontact.cpp

@@ -202,6 +202,7 @@ VToolPointOfContact* VToolPointOfContact::Create(const quint32 _id, QString &rad
         scene->addItem(point);
         connect(point, &VToolPointOfContact::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPointOfContact::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(center);
         doc->IncrementReferens(firstPointId);

src/app/tools/drawTools/vtoolpointofintersection.cpp

@@ -139,6 +139,7 @@ void VToolPointOfIntersection::Create(const quint32 _id, const QString &pointNam
         scene->addItem(point);
         connect(point, &VToolPointOfIntersection::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolPointOfIntersection::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(firstPointId);
         doc->IncrementReferens(secondPointId);

src/app/tools/drawTools/vtoolshoulderpoint.cpp

@@ -206,6 +206,7 @@ VToolShoulderPoint* VToolShoulderPoint::Create(const quint32 _id, QString &formu
         scene->addItem(point);
         connect(point, &VToolShoulderPoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolShoulderPoint::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(p1Line);
         doc->IncrementReferens(p2Line);

src/app/tools/drawTools/vtoolsinglepoint.cpp

@@ -239,6 +239,8 @@ void VToolSinglePoint::setColorLabel(const Qt::GlobalColor &color)
  */
 void VToolSinglePoint::contextMenuEvent ( QGraphicsSceneContextMenuEvent * event )
 {
+    quint32 ref = _referens; // store referens
+    _referens = 1; // make available delete pattern piece
     if (doc->CountPP() > 1)
     {
         ContextMenu<DialogSinglePoint>(this, event);
@@ -247,6 +249,7 @@ void VToolSinglePoint::contextMenuEvent ( QGraphicsSceneContextMenuEvent * event
     {
         ContextMenu<DialogSinglePoint>(this, event, false);
     }
+    _referens = ref; // restore referens. If not restore garbage collector delete point!!!
 }
 
 //---------------------------------------------------------------------------------------------------------------------

src/app/tools/drawTools/vtoolspline.cpp

@@ -171,6 +171,7 @@ void VToolSpline::Create(const quint32 _id, const quint32 &p1, const quint32 &p4
         scene->addItem(spl);
         connect(spl, &VToolSpline::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, spl, &VToolSpline::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, spl, &VToolSpline::Disable);
         doc->AddTool(id, spl);
         doc->IncrementReferens(p1);
         doc->IncrementReferens(p4);
@@ -204,6 +205,12 @@ void VToolSpline::ControlPointChangePosition(const qint32 &indexSpline, const Sp
     qApp->getUndoStack()->push(moveSpl);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VToolSpline::Disable(bool disable)
+{
+    DisableItem(this, disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief contextMenuEvent handle context menu events.

src/app/tools/drawTools/vtoolspline.h

@@ -51,6 +51,7 @@ public:
 public slots:
     void         ControlPointChangePosition (const qint32 &indexSpline, const SplinePointPosition &position,
                                              const QPointF &pos);
+    void         Disable(bool disable);
 protected:
     virtual void contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     virtual void AddToFile ();

src/app/tools/drawTools/vtoolsplinepath.cpp

@@ -153,6 +153,7 @@ void VToolSplinePath::Create(const quint32 _id, VSplinePath *path, VMainGraphics
         scene->addItem(spl);
         connect(spl, &VToolSplinePath::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, spl, &VToolSplinePath::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, spl, &VToolSplinePath::Disable);
         doc->AddTool(id, spl);
     }
 }
@@ -186,6 +187,12 @@ void VToolSplinePath::ControlPointChangePosition(const qint32 &indexSpline, cons
     qApp->getUndoStack()->push(moveSplPath);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VToolSplinePath::Disable(bool disable)
+{
+    DisableItem(this, disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief UpdateControlPoints update position points control points in file.

src/app/tools/drawTools/vtoolsplinepath.h

@@ -65,6 +65,7 @@ public slots:
 
     void          ControlPointChangePosition(const qint32 &indexSpline, const SplinePointPosition &position,
                                              const QPointF &pos);
+    void          Disable(bool disable);
 protected:
     virtual void  contextMenuEvent ( QGraphicsSceneContextMenuEvent * event );
     virtual void  AddToFile();

src/app/tools/drawTools/vtooltriangle.cpp

@@ -151,6 +151,7 @@ void VToolTriangle::Create(const quint32 _id, const QString &pointName, const qu
         scene->addItem(point);
         connect(point, &VToolTriangle::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
         connect(scene, &VMainGraphicsScene::NewFactor, point, &VToolTriangle::SetFactor);
+        connect(scene, &VMainGraphicsScene::DisableItem, point, &VToolPoint::Disable);
         doc->AddTool(id, point);
         doc->IncrementReferens(axisP1Id);
         doc->IncrementReferens(axisP2Id);

src/app/undocommands/deletepatternpiece.cpp

@@ -50,7 +50,6 @@ DeletePatternPiece::~DeletePatternPiece()
 //---------------------------------------------------------------------------------------------------------------------
 void DeletePatternPiece::undo()
 {
-
     QDomElement rootElement = doc->documentElement();
     rootElement.insertAfter(patternPiece, previousNode);
 

src/app/widgets/undoevent.cpp

@@ -0,0 +1,34 @@
+/************************************************************************
+ **
+ **  @file   undoevent.cpp
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   23 6, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2014 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#include "undoevent.h"
+
+//---------------------------------------------------------------------------------------------------------------------
+UndoEvent::UndoEvent()
+    :QEvent(UNDO_EVENT)
+{}

src/app/widgets/undoevent.h

@@ -0,0 +1,43 @@
+/************************************************************************
+ **
+ **  @file   undoevent.h
+ **  @author Roman Telezhynskyi <dismine(at)gmail.com>
+ **  @date   23 6, 2014
+ **
+ **  @brief
+ **  @copyright
+ **  This source code is part of the Valentine project, a pattern making
+ **  program, whose allow create and modeling patterns of clothing.
+ **  Copyright (C) 2014 Valentina project
+ **  <https://bitbucket.org/dismine/valentina> All Rights Reserved.
+ **
+ **  Valentina is free software: you can redistribute it and/or modify
+ **  it under the terms of the GNU General Public License as published by
+ **  the Free Software Foundation, either version 3 of the License, or
+ **  (at your option) any later version.
+ **
+ **  Valentina is distributed in the hope that it will be useful,
+ **  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ **  GNU General Public License for more details.
+ **
+ **  You should have received a copy of the GNU General Public License
+ **  along with Valentina.  If not, see <http://www.gnu.org/licenses/>.
+ **
+ *************************************************************************/
+
+#ifndef UNDOEVENT_H
+#define UNDOEVENT_H
+
+#include <QEvent>
+
+// Define undo event identifier
+const QEvent::Type UNDO_EVENT = static_cast<QEvent::Type>(QEvent::User + 1);
+
+class UndoEvent : public QEvent
+{
+public:
+    UndoEvent();
+};
+
+#endif // UNDOEVENT_H

src/app/widgets/vmaingraphicsscene.cpp

@@ -28,6 +28,8 @@
 
 #include "vmaingraphicsscene.h"
 #include <QGraphicsSceneMouseEvent>
+#include <QList>
+#include <QGraphicsItem>
 
 //---------------------------------------------------------------------------------------------------------------------
 /**
@@ -89,6 +91,12 @@ void VMainGraphicsScene::setTransform(const QTransform &transform)
     _transform = transform;
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VMainGraphicsScene::SetDisable(bool disable)
+{
+    emit DisableItem(disable);
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ChoosedItem emit ChoosedObject signal.

src/app/widgets/vmaingraphicsscene.h

@@ -47,6 +47,7 @@ public:
     void          setVerScrollBar(const qint32 &value);
     QTransform    transform() const;
     void          setTransform(const QTransform &transform);
+    void          SetDisable(bool enabled);
 public slots:
     void          ChoosedItem(quint32 id, const SceneObject &type);
     void          SetFactor(qreal factor);
@@ -75,6 +76,7 @@ signals:
      * @param factor scene scale factor.
      */
     void          NewFactor(qreal factor);
+    void          DisableItem(bool disable);
 private:
     /** @brief horScrollBar value horizontal scroll bar. */
     qint32        horScrollBar;

src/app/widgets/widgets.pri

@@ -11,7 +11,8 @@ HEADERS += \
     widgets/vsimplesplinepath.h \
     widgets/vsimplearc.h \
     widgets/textdelegate.h \
-    widgets/vtranslation.h
+    widgets/vtranslation.h \
+    widgets/undoevent.h
 
 SOURCES += \
     widgets/vtablegraphicsview.cpp \
@@ -26,4 +27,5 @@ SOURCES += \
     widgets/vsimplesplinepath.cpp \
     widgets/vsimplearc.cpp \
     widgets/textdelegate.cpp \
-    widgets/vtranslation.cpp
+    widgets/vtranslation.cpp \
+    widgets/undoevent.cpp

src/app/xml/vpattern.cpp

@@ -36,6 +36,8 @@
 #include "../exception/vexceptionwrongid.h"
 #include "../exception/vexceptionconversionerror.h"
 #include "../exception/vexceptionemptyparameter.h"
+#include "../exception/vexceptionundo.h"
+#include "../widgets/undoevent.h"
 #include "vstandardmeasurements.h"
 #include "vindividualmeasurements.h"
 #include "../../libs/qmuparser/qmuparsererror.h"
@@ -650,36 +652,45 @@ void VPattern::LiteParseTree()
 {
     try
     {
+        emit SetEnabledGUI(true);
         Parse(Document::LiteParse);
     }
+    catch (const VExceptionUndo &e)
+    {
+        Q_UNUSED(e);
+        /* If user want undo last operation before undo we need finish broken redo operation. For those we post event
+         * myself. Later in method customEvent call undo.*/
+        QApplication::postEvent(this, new UndoEvent());
+        return;
+    }
     catch (const VExceptionObjectError &e)
     {
         e.CriticalMessageBox(tr("Error parsing file."));
-        emit ClearMainWindow();
+        emit SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionConversionError &e)
     {
         e.CriticalMessageBox(tr("Error can't convert value."));
-        emit ClearMainWindow();
+        emit SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionEmptyParameter &e)
     {
         e.CriticalMessageBox(tr("Error empty parameter."));
-        emit ClearMainWindow();
+        emit SetEnabledGUI(false);
         return;
     }
     catch (const VExceptionWrongId &e)
     {
         e.CriticalMessageBox(tr("Error wrong id."));
-        emit ClearMainWindow();
+        emit SetEnabledGUI(false);
         return;
     }
     catch (VException &e)
     {
         e.CriticalMessageBox(tr("Error parsing file."));
-        emit ClearMainWindow();
+        emit SetEnabledGUI(false);
         return;
     }
     catch (const std::bad_alloc &)
@@ -687,12 +698,12 @@ void VPattern::LiteParseTree()
 #ifndef QT_NO_CURSOR
         QApplication::restoreOverrideCursor();
 #endif
-        QMessageBox::critical(nullptr, tr("Critical error!"), tr("Error parsing file (std::bad_alloc)."), QMessageBox::Ok,
+        QMessageBox::critical(nullptr, tr("Critical error!"), tr("Error parsing file (std::bad_alloc)."),
-                              QMessageBox::Ok);
+                              QMessageBox::Ok, QMessageBox::Ok);
 #ifndef QT_NO_CURSOR
         QApplication::setOverrideCursor(Qt::WaitCursor);
 #endif
-        emit ClearMainWindow();
+        emit SetEnabledGUI(false);
         return;
     }
 
@@ -733,6 +744,15 @@ void VPattern::ClearScene()
     emit ClearMainWindow();
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VPattern::customEvent(QEvent *event)
+{
+    if(event->type() == UNDO_EVENT)
+    {
+        qApp->getUndoStack()->undo();
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief ParseDrawElement parse draw tag.
@@ -1008,6 +1028,7 @@ void VPattern::ParsePointElement(VMainGraphicsScene *scene, QDomElement &domElem
                     scene->addItem(spoint);
                     connect(spoint, &VToolSinglePoint::ChoosedTool, scene, &VMainGraphicsScene::ChoosedItem);
                     connect(scene, &VMainGraphicsScene::NewFactor, spoint, &VToolSinglePoint::SetFactor);
+                    connect(scene, &VMainGraphicsScene::DisableItem, spoint, &VToolPoint::Disable);
                     tools[id] = spoint;
                 }
             }

src/app/xml/vpattern.h

@@ -145,12 +145,15 @@ signals:
     void           ChangedCursor(quint32 id);
     void           ClearMainWindow();
     void           UndoCommand();
+    void           SetEnabledGUI(bool enabled);
 public slots:
     void           LiteParseTree();
     void           haveLiteChange();
     void           ShowHistoryTool(quint32 id, Qt::GlobalColor color, bool enable);
     void           NeedFullParsing();
     void           ClearScene();
+protected:
+    virtual void   customEvent(QEvent * event);
 private:
     Q_DISABLE_COPY(VPattern)