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Typo-fix by Kunda
[modules/geom.git] / src / CurveCreator / CurveCreator_Widget.cxx
index 180284fc16f86e95dbf279bf7e91423f22dd6ce3..ae0c67d91ba8641a3eec5353e2e24c029bc19eac 100644 (file)
@@ -1,4 +1,4 @@
-// Copyright (C) 2013-2014  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2013-2016  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
 
 #include "CurveCreator_Widget.h"
 #include "CurveCreator_TreeView.h"
-#include "CurveCreator_Curve.hxx"
-#include "CurveCreator_CurveEditor.hxx"
-#include "CurveCreator.hxx"
-#include "CurveCreator_NewPointDlg.h"
 #include "CurveCreator_NewSectionDlg.h"
-
-#include <GEOMUtils.hxx>
+#include "CurveCreator_Utils.hxx"
+#include "CurveCreator_UtilsICurve.hxx"
+#include "CurveCreator_TableView.h"
 
 #include <SUIT_Session.h>
 #include <SUIT_Desktop.h>
 #include <SUIT_ResourceMgr.h>
 #include <SUIT_ViewManager.h>
 
-#include <OCCViewer_ViewWindow.h>
 #include <OCCViewer_ViewManager.h>
 #include <OCCViewer_ViewPort3d.h>
-
-#include <BRep_Tool.hxx>
-#include <TopoDS.hxx>
+#include <OCCViewer_Utilities.h>
 
 #include <QHBoxLayout>
 #include <QVBoxLayout>
 #include <QMenu>
 #include <QMouseEvent>
 #include <QApplication>
+#include <QTableWidget>
+#include <QTime>
+#include <QSplitter>
 
-CurveCreator_Widget::CurveCreator_Widget(QWidget* parent,
-                                         CurveCreator_Curve *theCurve,
-                                         Qt::WindowFlags fl) :
-    QWidget(parent), myNewPointEditor(NULL), myNewSectionEditor(NULL), myEdit(NULL), myCurve(theCurve)
-{
-    if( myCurve )
-        myEdit = new CurveCreator_CurveEditor( myCurve );
-
-    CurveCreator::Dimension aDim = CurveCreator::Dim2d;
-    if( myCurve )
-        aDim = myCurve->getDimension();
-    myNewPointEditor = new CurveCreator_NewPointDlg( aDim, this );
-    myNewPointEditor->hide();
-//    connect( myNewPointEditor, SIGNAL(addPoint()), this, SLOT(onAddNewPoint()) );
-    connect( myNewPointEditor, SIGNAL(modifyPoint()), this, SLOT(onModifyPoint()) );
-    connect( myNewPointEditor, SIGNAL(cancelPoint()), this, SLOT(onCancelPoint()) );
-
-    myNewSectionEditor = new CurveCreator_NewSectionDlg( this );
-    myNewSectionEditor->hide();
-    connect( myNewSectionEditor, SIGNAL(addSection()), this, SLOT(onAddNewSection()) );
-    connect( myNewSectionEditor, SIGNAL(modifySection()), this, SLOT(onModifySection()) );
-    connect( myNewSectionEditor, SIGNAL(cancelSection()), this, SLOT(onCancelSection()) );
-
-    QGroupBox* aSectionGroup = new QGroupBox(tr("Sections"),this);
-
-    mySectionView = new CurveCreator_TreeView(myCurve, aSectionGroup);
-    connect( mySectionView, SIGNAL(selectionChanged()), this, SLOT( onSelectionChanged() ) );
-    connect( mySectionView, SIGNAL(pointEntered(int,int)), this, SLOT(onEditPoint(int,int)) );
-    connect( mySectionView, SIGNAL(sectionEntered(int)), this, SLOT(onEditSection(int)) );
-    connect( mySectionView, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(onContextMenu(QPoint)) );
-    QToolBar* aTB = new QToolBar(tr("TOOL_BAR_TLT"), aSectionGroup);
-//    QToolButton* anUndoBtn = new QToolButton(aTB);
+#include <utilities.h>
 
-    SUIT_ResourceMgr* aResMgr = SUIT_Session::session()->resourceMgr();
-    QPixmap anUndoPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_UNDO")));
-    QPixmap aRedoPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_REDO")));
-    QPixmap aNewSectionPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_NEW_SECTION")));
-    QPixmap aNewPointPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_NEW_POINT")));
-    QPixmap anEditPointsPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_EDIT_POINTS")));
-    QPixmap aDetectPointsPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_EDIT_POINTS")));
-    QPixmap aPolylinePixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_POLYLINE")));
-    QPixmap aSplinePixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_SPLINE")));
-    QPixmap aRemovePixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_DELETE")));
-    QPixmap aJoinPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_JOIN")));
-    QPixmap aStepUpPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_ARROW_UP")));
-    QPixmap aStepDownPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_ARROW_DOWN")));
-
-/*    QPixmap anUndoPixmap = QPixmap(tr(":images/ICON_UNDO"));
-    QPixmap aRedoPixmap = QPixmap(tr(":images/ICON_REDO"));
-    QPixmap aNewSectionPixmap = QPixmap(tr(":images/ICON_NEW_SECTION"));
-    QPixmap aNewPointPixmap = QPixmap(tr(":images/ICON_NEW_POINT"));
-    QPixmap aPolylinePixmap = QPixmap(tr(":images/ICON_POLYLINE"));
-    QPixmap aSplinePixmap = QPixmap(tr(":images/ICON_SPLINE"));
-    QPixmap aRemovePixmap = QPixmap(tr(":images/ICON_REMOVE"));
-    QPixmap aJoinPixmap = QPixmap(tr(":images/ICON_JOIN"));
-    QPixmap aStepUpPixmap = QPixmap(tr(":images/ICON_STEP_UP"));
-    QPixmap aStepDownPixmap = QPixmap(tr(":images/ICON_STEP_DOWN"));*/
-
-    QAction* anAct = createAction( UNDO_ID, tr("UNDO"), anUndoPixmap, tr("UNDO_TLT"), 
-                                   QKeySequence(Qt::ControlModifier|Qt::Key_Z) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onUndo()) );
-    aTB->addAction(anAct);
+//#define MEASURE_TIME
 
-    anAct = createAction( REDO_ID, tr("REDO"), aRedoPixmap, tr("REDO_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_Y) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onRedo()) );
-    aTB->addAction(anAct);
+#ifdef MEASURE_TIME
 
-    aTB->addSeparator();
+  #define START_MEASURE_TIME \
+    QTime aTimer;            \
+    aTimer.start();          \
 
-    anAct = createAction( NEW_SECTION_ID, tr("NEW_SECTION"), aNewSectionPixmap, tr("NEW_SECTION_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_N) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onNewSection()) );
-    aTB->addAction(anAct);
-    aTB->addSeparator();
+  #define END_MEASURE_TIME( theMsg )                      \
+    double aTime = aTimer.elapsed() * 0.001;              \
+    FILE* aFile = fopen( "performance", "a" );            \
+    fprintf( aFile, "%s = %.3lf sec\n", theMsg, aTime );  \
+    fclose( aFile );                                      \
+
+#else
+
+  #define START_MEASURE_TIME
+  #define END_MEASURE_TIME( theMsg )
+
+#endif
 
-    anAct = createAction( INSERT_SECTION_BEFORE_ID, tr("INSERT_SECTION_BEFORE"), QPixmap(), 
-                          tr("INSERT_SECTION_BEFORE_TLT"),
-                          QKeySequence(Qt::ControlModifier | Qt::Key_Insert ) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onInsertSectionBefore()) );
-
-    anAct = createAction( INSERT_SECTION_AFTER_ID, tr("INSERT_SECTION_AFTER"), QPixmap(), 
-                          tr("INSERT_SECTION_AFTER_TLT"),
-                          QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Insert ) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onInsertSectionAfter()) );
-
-    anAct = createAction( ADDITION_MODE_ID, tr("ADDITION_MODE"), aNewPointPixmap, tr("ADDITION_MODE_TLT"), 
-                          QKeySequence() );
-    anAct->setCheckable(true);
-    connect(anAct, SIGNAL(triggered(bool)), this, SLOT(onAdditionMode(bool)) );
-    connect(anAct, SIGNAL(toggled(bool)), this, SLOT(onModeChanged(bool)) );
-    aTB->addAction(anAct);
-    
-    anAct = createAction( MODIFICATION_MODE_ID, tr("MODIFICATION_MODE"), anEditPointsPixmap, tr("MODIFICATION_MODE_TLT"), 
-                          QKeySequence() );
-    anAct->setCheckable(true);
-    connect(anAct, SIGNAL(triggered(bool)), this, SLOT(onModificationMode(bool)) );
-    connect(anAct, SIGNAL(toggled(bool)), this, SLOT(onModeChanged(bool)) );
-    aTB->addAction(anAct);
 
-    anAct = createAction( DETECTION_MODE_ID, tr("DETECTION_MODE"), aDetectPointsPixmap, tr("DETECTION_MODE_TLT"), 
-                          QKeySequence() );
-    anAct->setCheckable(true);
-    connect(anAct, SIGNAL(triggered(bool)), this, SLOT(onDetectPoints(bool)) );
-    connect(anAct, SIGNAL(toggled(bool)), this, SLOT(onModeChanged(bool)) );
-    aTB->addAction(anAct);
 
-    anAct = createAction( INSERT_POINT_BEFORE_ID, tr("INSERT_POINT_BEFORE"), QPixmap(), 
-                          tr("INSERT_POINT_BEFORE_TLT"), QKeySequence(Qt::ControlModifier|Qt::Key_B) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onInsertPointBefore()) );
-
-    anAct = createAction( INSERT_POINT_AFTER_ID, tr("INSERT_POINT_AFTER"), QPixmap(), 
-                           tr("INSERT_POINT_AFTER_TLT"), QKeySequence(Qt::ControlModifier|Qt::Key_M) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onInsertPointAfter()) );
-                                 
-    anAct = createAction( CLOSE_SECTIONS_ID, tr("CLOSE_SECTIONS"), QPixmap(), tr("CLOSE_SECTIONS_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_W) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onCloseSections()) );
-
-    anAct = createAction( UNCLOSE_SECTIONS_ID, tr("UNCLOSE_SECTIONS"), QPixmap(), 
-                          tr("UNCLOSE_SECTIONS_TLT"), QKeySequence(Qt::ControlModifier|Qt::Key_S) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onUncloseSections()) );
-
-    anAct = createAction( SET_SECTIONS_POLYLINE_ID, tr("SET_SECTIONS_POLYLINE"), 
-                          aPolylinePixmap, tr("SET_POLYLINE_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_E) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onSetPolyline()) );
-
-    anAct = createAction( SET_SECTIONS_SPLINE_ID, tr("SET_SECTIONS_SPLINE"), aSplinePixmap, 
-                          tr("SET_SPLINE_TLT"), QKeySequence(Qt::ControlModifier|Qt::Key_R) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onSetSpline()) );
-
-    anAct = createAction( REMOVE_ID, tr("REMOVE"), aRemovePixmap, tr("REMOVE_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_Delete ) );
-    connect(anAct, SIGNAL(triggered()), this, SLOT(onRemove()) );
-    aTB->addAction(anAct);
-    aTB->addSeparator();
 
-    anAct = createAction( JOIN_ID, tr("JOIN"), aJoinPixmap, tr("JOIN_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_Plus ) );
-    connect( anAct, SIGNAL(triggered()), this, SLOT(onJoin()) );
+
+
+CurveCreator_Widget::CurveCreator_Widget(QWidget* parent,
+                                         CurveCreator_ICurve *theCurve,
+                                         const int theActionFlags,
+                                         const QStringList& theCoordTitles,
+                                         Qt::WindowFlags fl,
+                                         int theLocalPointRowLimit )
+: QWidget(parent), myNewSectionEditor(NULL), myCurve(theCurve), mySection(0),
+  myDragStarted( false ), myDragInteractionStyle( SUIT_ViewModel::STANDARD ),
+  myOCCViewer( 0 ), myLocalPointRowLimit( theLocalPointRowLimit ),
+  myOld2DMode(OCCViewer_ViewWindow::No2dMode)
+{
+  bool isToEnableClosed = !( theActionFlags & DisableClosedSection );
+  myNewSectionEditor = new CurveCreator_NewSectionDlg( this, isToEnableClosed );
+  myNewSectionEditor->hide();
+  connect( myNewSectionEditor, SIGNAL(addSection()), this, SLOT(onAddNewSection()) );
+  connect( myNewSectionEditor, SIGNAL(modifySection()), this, SLOT(onModifySection()) );
+  connect( myNewSectionEditor, SIGNAL(cancelSection()), this, SLOT(onCancelSection()) );
+
+  QGroupBox* aSectionGroup = new QGroupBox(tr("SECTION_GROUP_TITLE"),this);
+
+  mySectionView = new CurveCreator_TreeView(myCurve, aSectionGroup);
+  mySectionView->setSelectionMode( QTreeView::ExtendedSelection );
+  connect( mySectionView, SIGNAL(selectionChanged()), this, SLOT( onSelectionChanged() ) );
+  connect( mySectionView, SIGNAL(sectionEntered(int)), this, SLOT(onEditSection(int)) );
+  connect( mySectionView, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(onContextMenu(QPoint)) );
+
+  myLocalPointView = new CurveCreator_TableView( myCurve, this, theCoordTitles );
+  connect( myLocalPointView, SIGNAL( cellChanged( int, int ) ),
+           this, SLOT( onCellChanged( int, int ) ) );
+
+  QToolBar* aTB = new QToolBar(tr("SECTION_GROUP_TITLE"), aSectionGroup);
+//    QToolButton* anUndoBtn = new QToolButton(aTB);
+
+  SUIT_ResourceMgr* aResMgr = SUIT_Session::session()->resourceMgr();
+  QPixmap anUndoPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_UNDO")));
+  QPixmap aRedoPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_REDO")));
+  QPixmap aNewSectionPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_NEW_SECTION")));
+  QPixmap aNewPointPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_NEW_POINT")));
+  QPixmap anEditPointsPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_EDIT_POINTS")));
+  QPixmap aDetectPointsPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_EDIT_POINTS")));
+  QPixmap aPolylinePixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_POLYLINE")));
+  QPixmap aSplinePixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_SPLINE")));
+  QPixmap aRemovePixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_DELETE")));
+  QPixmap aJoinPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_JOIN")));
+  QPixmap aBringTogetherPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_BRING_TOGETHER")));
+  QPixmap aStepUpPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_ARROW_UP")));
+  QPixmap aStepDownPixmap(aResMgr->loadPixmap("GEOM", tr("ICON_CC_ARROW_DOWN")));
+
+  QAction* anAct = createAction( UNDO_ID, tr("UNDO"), anUndoPixmap, tr("UNDO_TLT"), 
+                                 QKeySequence(Qt::ControlModifier|Qt::Key_Z) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onUndo()) );
+  aTB->addAction(anAct);
+
+  anAct = createAction( REDO_ID, tr("REDO"), aRedoPixmap, tr("REDO_TLT"), 
+                        QKeySequence(Qt::ControlModifier|Qt::Key_Y) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onRedo()) );
+  aTB->addAction(anAct);
+
+  aTB->addSeparator();
+  
+  anAct = createAction( NEW_SECTION_ID, tr("NEW_SECTION"), aNewSectionPixmap, tr("NEW_SECTION_TLT"), 
+                        QKeySequence(Qt::ControlModifier|Qt::Key_N) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onNewSection()) );
+  if ( !(theActionFlags & DisableNewSection) ) {
     aTB->addAction(anAct);
     aTB->addSeparator();
+  }
 
-    anAct = createAction( UP_ID, tr("STEP_UP"), aStepUpPixmap, tr("STEP_UP_TLT"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_Up ) );
-    connect( anAct, SIGNAL(triggered()), this, SLOT(onMoveUp()) );
-
-    anAct = createAction( DOWN_ID, tr("STEP_DOWN"), aStepDownPixmap, tr("STEP_DOWN"), 
-                          QKeySequence(Qt::ControlModifier|Qt::Key_Down ) );
-    connect( anAct, SIGNAL(triggered()), this, SLOT(onMoveDown()) );
-
-    anAct = createAction( CLEAR_ALL_ID, tr("CLEAR_ALL"), QPixmap(), tr("CLEAR_ALL_TLT"), 
-                          QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Delete ) );
-    connect( anAct, SIGNAL(triggered()), this, SLOT( onClearAll()) );
-
-    anAct = createAction( JOIN_ALL_ID, tr("JOIN_ALL"), QPixmap(), tr("JOIN_ALL_TLT"), 
-                          QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Plus ) );
-    connect( anAct, SIGNAL(triggered()), this, SLOT(onJoinAll()) );
-
-    QVBoxLayout* aSectLayout = new QVBoxLayout();
-    aSectLayout->setMargin( 5 );
-    aSectLayout->setSpacing( 5 );
-    aSectLayout->addWidget(aTB);
-    aSectLayout->addWidget(mySectionView);
-    aSectionGroup->setLayout(aSectLayout);
-    QVBoxLayout* aLay = new QVBoxLayout();
-    aLay->setMargin( 0 );
-    aLay->setSpacing( 5 );
+  anAct = createAction( ADDITION_MODE_ID, tr("ADDITION_MODE"), aNewPointPixmap, tr("ADDITION_MODE_TLT"), 
+                        QKeySequence() );
+  anAct->setCheckable(true);
+  connect(anAct, SIGNAL(triggered(bool)), this, SLOT(onAdditionMode(bool)) );
+  connect(anAct, SIGNAL(toggled(bool)), this, SLOT(onModeChanged(bool)) );
+  aTB->addAction(anAct);
+  
+  anAct = createAction( MODIFICATION_MODE_ID, tr("MODIFICATION_MODE"), anEditPointsPixmap, tr("MODIFICATION_MODE_TLT"), 
+                        QKeySequence() );
+  anAct->setCheckable(true);
+  connect(anAct, SIGNAL(triggered(bool)), this, SLOT(onModificationMode(bool)) );
+  connect(anAct, SIGNAL(toggled(bool)), this, SLOT(onModeChanged(bool)) );
+  aTB->addAction(anAct);
+
+  anAct = createAction( DETECTION_MODE_ID, tr("DETECTION_MODE"), aDetectPointsPixmap, tr("DETECTION_MODE_TLT"), 
+                        QKeySequence() );
+  anAct->setCheckable(true);
+  connect(anAct, SIGNAL(triggered(bool)), this, SLOT(onDetectionMode(bool)) );
+  connect(anAct, SIGNAL(toggled(bool)), this, SLOT(onModeChanged(bool)) );
+//  if ( !(theActionFlags & DisableDetectionMode) ) {
+//    aTB->addAction(anAct);
+//  }
+  
+  anAct = createAction( CLOSE_SECTIONS_ID, tr("CLOSE_SECTIONS"), QPixmap(), tr("CLOSE_SECTIONS_TLT"), 
+                        QKeySequence(Qt::ControlModifier|Qt::Key_W) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onCloseSections()) );
+
+  anAct = createAction( UNCLOSE_SECTIONS_ID, tr("UNCLOSE_SECTIONS"), QPixmap(), 
+                        tr("UNCLOSE_SECTIONS_TLT"), QKeySequence(Qt::ControlModifier|Qt::Key_S) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onUncloseSections()) );
+
+  anAct = createAction( SET_SECTIONS_POLYLINE_ID, tr("SET_SECTIONS_POLYLINE"), 
+                        aPolylinePixmap, tr("SET_SECTIONS_POLYLINE_TLT"), 
+                        QKeySequence(Qt::ControlModifier|Qt::Key_E) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onSetPolyline()) );
+
+  anAct = createAction( SET_SECTIONS_SPLINE_ID, tr("SET_SECTIONS_SPLINE"), aSplinePixmap, 
+                        tr("SET_SECTIONS_SPLINE_TLT"), QKeySequence(Qt::ControlModifier|Qt::Key_R) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onSetSpline()) );
+
+  aTB->addSeparator();
+
+  anAct = createAction( REMOVE_ID, tr("REMOVE"), aRemovePixmap, tr("REMOVE_TLT"), 
+                        QKeySequence(Qt::ControlModifier|Qt::Key_Delete ) );
+  connect(anAct, SIGNAL(triggered()), this, SLOT(onRemove()) );
+  aTB->addAction(anAct);
+  
+  anAct = createAction( JOIN_ID, tr("JOIN"), aJoinPixmap, tr("JOIN_TLT"), 
+                        QKeySequence(Qt::ControlModifier|Qt::Key_Plus ) );
+  connect( anAct, SIGNAL(triggered()), this, SLOT(onJoin()) );
+  aTB->addAction(anAct);
+
+  anAct = createAction( BRING_TOGETHER_ID, tr("BRING_TOGETHER"), aBringTogetherPixmap, tr("BRING_TOGETHER_TLT"),
+                        QKeySequence(Qt::ControlModifier|Qt::Key_Equal ) );
+  connect( anAct, SIGNAL(triggered()), this, SLOT(onBringTogether()) );
+  aTB->addAction(anAct);
+
+  anAct = createAction( CLEAR_ALL_ID, tr("CLEAR_ALL"), QPixmap(), tr("CLEAR_ALL_TLT"), 
+                        QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Delete ) );
+  connect( anAct, SIGNAL(triggered()), this, SLOT( onClearAll()) );
+
+  anAct = createAction( JOIN_ALL_ID, tr("JOIN_ALL"), QPixmap(), tr("JOIN_ALL_TLT"), 
+                        QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Plus ) );
+  connect( anAct, SIGNAL(triggered()), this, SLOT(onJoinAll()) );
+
+  QVBoxLayout* aSectLayout = new QVBoxLayout();
+  aSectLayout->setMargin( 5 );
+  aSectLayout->setSpacing( 5 );
+  aSectLayout->addWidget(aTB);
+
+  QSplitter* aSplitter = new QSplitter(aSectionGroup);
+  aSplitter->setOrientation(Qt::Vertical);
+
+  aSplitter->addWidget(mySectionView);
+  aSplitter->addWidget( myLocalPointView );
+
+  aSectLayout->addWidget(aSplitter);
+  aSectionGroup->setLayout(aSectLayout);
+  QVBoxLayout* aLay = new QVBoxLayout();
+  aLay->setMargin( 0 );
+  aLay->setSpacing( 5 );
 //    aLay->addLayout(aNameLayout);
-    aLay->addWidget(aSectionGroup);
-    setLayout(aLay);
-    onSelectionChanged();
+  aLay->addWidget(aSectionGroup);
+  setLayout(aLay);
+
+  updateActionsStates();
+  updateUndoRedo();
 }
 
-void CurveCreator_Widget::setCurve( CurveCreator_Curve* theCurve )
+/**
+ * Set an OCC viewer
+ */
+void CurveCreator_Widget::setOCCViewer( OCCViewer_Viewer* theViewer )
 {
-  if( myEdit != NULL ){
-    delete myEdit;
-    myEdit = NULL;
+  if ( myOCCViewer == theViewer )
+    return;
+
+  if ( myOCCViewer ) {
+    OCCViewer_ViewManager* aViewManager = dynamic_cast<OCCViewer_ViewManager*>
+                                                    ( myOCCViewer->getViewManager() );
+    disconnect( aViewManager, SIGNAL( mousePress( SUIT_ViewWindow*, QMouseEvent* ) ),
+           this, SLOT( onMousePress( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    disconnect( aViewManager, SIGNAL( mouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ),
+           this, SLOT( onMouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    disconnect( aViewManager, SIGNAL( mouseMove( SUIT_ViewWindow*, QMouseEvent* ) ),
+           this, SLOT( onMouseMove( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    disconnect( aViewManager, SIGNAL( lastViewClosed( SUIT_ViewManager* ) ),
+           this, SLOT( onLastViewClosed( SUIT_ViewManager* ) ) );
+    // restore normal mode in the viewer
+    SetViewer2DMode(false);
+    // all local contexts should be closed if the viewer is not more used
+    setLocalPointContext( false, true );
   }
-  myCurve = theCurve;
-  mySectionView->setCurve(myCurve);
-  if( myCurve != NULL ){
-    myEdit = new CurveCreator_CurveEditor(myCurve);
+
+  myOCCViewer = theViewer;
+  if ( myOCCViewer ) {
+    OCCViewer_ViewManager* aViewManager = dynamic_cast<OCCViewer_ViewManager*>
+                                                    ( myOCCViewer->getViewManager() );
+    connect( aViewManager, SIGNAL( mousePress( SUIT_ViewWindow*, QMouseEvent* ) ),
+           this, SLOT( onMousePress( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    connect( aViewManager, SIGNAL( mouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ),
+           this, SLOT( onMouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    connect( aViewManager, SIGNAL( mouseMove( SUIT_ViewWindow*, QMouseEvent* ) ),
+           this, SLOT( onMouseMove( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    connect( aViewManager, SIGNAL( lastViewClosed( SUIT_ViewManager* ) ),
+           this, SLOT( onLastViewClosed( SUIT_ViewManager* ) ) );
+    SetViewer2DMode(true);
   }
-  onSelectionChanged();
+}
+
+/**
+ * Returns current OCC viewer
+ */
+OCCViewer_Viewer* CurveCreator_Widget::getOCCViewer()
+{
+  return myOCCViewer;
+}
+
+/**
+ * Returns OCC viewer context
+ */
+Handle(AIS_InteractiveContext) CurveCreator_Widget::getAISContext()
+{
+  Handle(AIS_InteractiveContext) aContext;
+  OCCViewer_Viewer* aViewer = getOCCViewer();
+  if ( aViewer )
+    aContext = aViewer->getAISContext();
+
+  return aContext;
+}
+
+/**
+ * Returns OCC viewer view port
+ */
+OCCViewer_ViewPort3d* CurveCreator_Widget::getViewPort()
+{
+  OCCViewer_ViewPort3d* aViewPort = 0;
+  OCCViewer_Viewer* aViewer = getOCCViewer();
+  if ( aViewer )
+    aViewPort = ((OCCViewer_ViewWindow*)aViewer->getViewManager()->getActiveView())->getViewPort();
+    
+  return aViewPort;
+}
+
+/**
+ * Set interaction style in the OCC viewer
+ * \param theStyle a new style
+ * \return the previous style
+ */
+int CurveCreator_Widget::changeInteractionStyle( int theStyle )
+{
+  OCCViewer_Viewer* aViewer = getOCCViewer();
+  if ( !aViewer )
+    return -1;
+
+  int aPrevStyle = aViewer->interactionStyle();
+  aViewer->setInteractionStyle( theStyle );
+
+  return aPrevStyle;
+}
+
+//=======================================================================
+// function: reset
+// purpose: reset the widget viewer, close local context, clear selection
+//=======================================================================
+void CurveCreator_Widget::reset()
+{
+  stopActionMode();
+}
+
+void CurveCreator_Widget::setCurve( CurveCreator_ICurve* theCurve )
+{
+  myCurve = theCurve;
+  mySectionView->setCurve( myCurve );
+  myLocalPointView->setCurve( myCurve );
+  updateActionsStates();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onSelectionChanged()
+{
+  updateActionsStates();
+  updateUndoRedo();
+  emit selectionChanged();
+}
+
+void CurveCreator_Widget::updateActionsStates()
 {
   QList<ActionId> anEnabledAct;
   if( myCurve ){
-    anEnabledAct << NEW_SECTION_ID;
+    anEnabledAct << NEW_SECTION_ID << MODIFICATION_MODE_ID;
+    if ( removeEnabled() )
+      anEnabledAct << REMOVE_ID;
     QList<int> aSelSections = mySectionView->getSelectedSections();
-    QList< QPair< int, int > > aSelPoints = mySectionView->getSelectedPoints();
     CurveCreator_TreeView::SelectionType aSelType = mySectionView->getSelectionType();
     switch( aSelType ){
     case CurveCreator_TreeView::ST_NOSEL:{
@@ -258,29 +368,47 @@ void CurveCreator_Widget::onSelectionChanged()
         anEnabledAct << UP_ID;
       }*/
       if( aSelSections.size() == 1 ){
-        anEnabledAct << ADDITION_MODE_ID << MODIFICATION_MODE_ID << DETECTION_MODE_ID;
+        anEnabledAct << ADDITION_MODE_ID << DETECTION_MODE_ID;
       }
-      if (myActionMap[ADDITION_MODE_ID]->isChecked()) {
-        mySection = -1;
-        myPointNum = -1;
-        QList<int> aSelSection = mySectionView->getSelectedSections();
-        if( aSelSection.size() > 0 ){
-          mySection = aSelSection[0];
-          myPointNum = myCurve->getNbPoints(mySection);
+      switch ( getActionMode() ) {
+        case AdditionMode: {
+          mySection = -1;
+          myPointNum = -1;
+          QList<int> aSelSection = mySectionView->getSelectedSections();
+          if( aSelSection.size() > 0 ){
+            mySection = aSelSection[0];
+            myPointNum = myCurve->getNbPoints(mySection);
+          }
         }
-      } else if (myActionMap[MODIFICATION_MODE_ID]->isChecked()) {
-        anEnabledAct << REMOVE_ID;
-        anEnabledAct << CLOSE_SECTIONS_ID << UNCLOSE_SECTIONS_ID << SET_SECTIONS_POLYLINE_ID << SET_SECTIONS_SPLINE_ID;
-        int aSectCnt = myCurve->getNbSections();
-        if( aSectCnt > 0 )
-          anEnabledAct << CLEAR_ALL_ID;
-        if( aSectCnt > 1 )
-          anEnabledAct << JOIN_ALL_ID;
-        if( aSelSections.size() > 1 ){
-          anEnabledAct << JOIN_ID;
+        break;
+        case ModificationMode: {
+          if ( myNewSectionEditor->isEnableClosed() )
+            anEnabledAct << CLOSE_SECTIONS_ID << UNCLOSE_SECTIONS_ID;
+          anEnabledAct << SET_SECTIONS_POLYLINE_ID << SET_SECTIONS_SPLINE_ID;
+          int aSectCnt = myCurve->getNbSections();
+          if( aSectCnt > 0 )
+            anEnabledAct << CLEAR_ALL_ID;
+          if( aSectCnt > 1 )
+            anEnabledAct << JOIN_ALL_ID;
+          if( aSelSections.size() > 1 ){
+            anEnabledAct << JOIN_ID << BRING_TOGETHER_ID;
+          }
         }
-      } else if (myActionMap[DETECTION_MODE_ID]->isChecked()) {
-      } else { //no active mode
+        break;
+        case DetectionMode: {
+        }
+        break;
+        case NoneMode:
+          {
+            int aSectCnt = myCurve->getNbSections();
+            if( aSectCnt > 1 )
+              anEnabledAct << JOIN_ALL_ID;
+            if( aSelSections.size() > 1 )
+              anEnabledAct << JOIN_ID;
+          }
+          break;
+        default:
+        break;
       }
       /*if( aSelSections[ aSelSections.size() - 1 ] < ( myCurve->getNbSections() - 1 ) ){
         anEnabledAct << DOWN_ID;
@@ -326,32 +454,16 @@ void CurveCreator_Widget::onSelectionChanged()
       }
     }
   }
-  emit selectionChanged();
 }
 
 void CurveCreator_Widget::onAdditionMode(bool checked)
 {
-  if( !myEdit )
+  if (!checked)
     return;
 
-  SUIT_ViewWindow* aViewWindow = 0;
-  SUIT_Study* activeStudy = SUIT_Session::session()->activeApplication()->activeStudy();
-  if ( activeStudy )
-    aViewWindow = SUIT_Session::session()->activeApplication()->desktop()->activeWindow();
-  if ( aViewWindow == 0 )
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+  if( !myCurve || aContext.IsNull() )
     return;
-  SUIT_ViewManager* aViewManager = aViewWindow->getViewManager();
-
-  if ( aViewManager->getType() == OCCViewer_Viewer::Type() ) {
-    if (checked) {
-      connect( aViewManager, SIGNAL( mousePress( SUIT_ViewWindow*, QMouseEvent* ) ),
-             this, SLOT( onGetPointByClick( SUIT_ViewWindow*, QMouseEvent* ) ) );
-    } else {
-      disconnect( aViewManager, SIGNAL( mousePress( SUIT_ViewWindow*, QMouseEvent* ) ),
-             this, SLOT( onGetPointByClick( SUIT_ViewWindow*, QMouseEvent* ) ) );
-      return;
-    }
-  }
 
   mySection= -1;
   myPointNum = -1;
@@ -359,78 +471,40 @@ void CurveCreator_Widget::onAdditionMode(bool checked)
   if( aSelSection.size() > 0 ){
     mySection = aSelSection[0];
   }
-  else{
-    QList< QPair<int,int> > aSelPoints = mySectionView->getSelectedPoints();
-    if( aSelPoints.size() > 0 ){
-      mySection = aSelPoints[0].first;
-      myPointNum = aSelPoints[0].second + 1;
-    }
-  }
-/*
-  QString aSectName;
-  if( mySection < 0 ){
-    mySection = myCurve->getNbSections() - 1;
-  }
-  aSectName = QString::fromStdString( myCurve->getSectionName(mySection));
-  if( myPointNum < 0 ){
-    myPointNum = myCurve->getNbPoints(mySection);
-  }
-  myNewPointEditor->clear();
-  myNewPointEditor->setEditMode(false);
-  myNewPointEditor->setSectionName(aSectName);
-  myNewPointEditor->setDimension(myCurve->getDimension());
-*/
 //  emit subOperationStarted( myNewPointEditor );
 }
 
 void CurveCreator_Widget::onModificationMode(bool checked)
 {
-  SUIT_ViewWindow* aViewWindow = 0;
-  SUIT_Study* activeStudy = SUIT_Session::session()->activeApplication()->activeStudy();
-  if ( activeStudy )
-    aViewWindow = SUIT_Session::session()->activeApplication()->desktop()->activeWindow();
-  if ( aViewWindow == 0 )
-    return;
-  SUIT_ViewManager* aViewManager = aViewWindow->getViewManager();
-  if ( aViewManager->getType() == OCCViewer_Viewer::Type() ) {
-    if (checked) {
-//      connect( aViewManager, SIGNAL( mouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ),
-//             this, SLOT( onPointSelect( SUIT_ViewWindow*, QMouseEvent* ) ) );
-      connect( aViewManager, SIGNAL( mouseMove( SUIT_ViewWindow*, QMouseEvent* ) ),
-             this, SLOT( onPointDrag( SUIT_ViewWindow*, QMouseEvent* ) ) );
-    }
-    else {
-//      disconnect( aViewManager, SIGNAL( mouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ),
-//             this, SLOT( onPointSelect( SUIT_ViewWindow*, QMouseEvent* ) ) );
-      disconnect( aViewManager, SIGNAL( mouseMove( SUIT_ViewWindow*, QMouseEvent* ) ),
-             this, SLOT( onPointDrag( SUIT_ViewWindow*, QMouseEvent* ) ) );
-      return;
-    }
-  }
+  myLocalPointView->setVisible( checked );
 }
 
-void CurveCreator_Widget::onDetectPoints(bool checked)
+void CurveCreator_Widget::onDetectionMode(bool checked)
 {
 }
 
 void CurveCreator_Widget::onModeChanged(bool checked)
 {
+  ActionMode aMode = NoneMode;
   if (checked) {
     QAction* anAction = (QAction*)sender();
     switch(myActionMap.key(anAction)) {
       case ADDITION_MODE_ID:
+        aMode = AdditionMode;
         if (myActionMap[MODIFICATION_MODE_ID]->isChecked())
           myActionMap[MODIFICATION_MODE_ID]->trigger();
         else if (myActionMap[DETECTION_MODE_ID]->isChecked())
           myActionMap[DETECTION_MODE_ID]->trigger();
         break;
       case MODIFICATION_MODE_ID:
+        aMode = ModificationMode;
         if (myActionMap[ADDITION_MODE_ID]->isChecked())
           myActionMap[ADDITION_MODE_ID]->trigger();
         else if (myActionMap[DETECTION_MODE_ID]->isChecked())
           myActionMap[DETECTION_MODE_ID]->trigger();
         break;
       case DETECTION_MODE_ID:
+        aMode = DetectionMode;
         if (myActionMap[ADDITION_MODE_ID]->isChecked())
           myActionMap[ADDITION_MODE_ID]->trigger();
         else if (myActionMap[MODIFICATION_MODE_ID]->isChecked())
@@ -438,54 +512,39 @@ void CurveCreator_Widget::onModeChanged(bool checked)
         break;
     }
   }
-  onSelectionChanged();
-}
-
-void CurveCreator_Widget::onAddNewPoint(const CurveCreator::Coordinates& theCoords)
-{
-  if( !myEdit )
-    return;
-//  CurveCreator::Coordinates aCoords = myNewPointEditor->getCoordinates();
-  myEdit->insertPoints(theCoords, mySection, myPointNum );
-  mySectionView->pointsAdded( mySection, myPointNum );
-//  myNewPointEditor->clear();
-  myPointNum++;
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
+  setLocalPointContext( aMode == ModificationMode, true );
 }
 
 void CurveCreator_Widget::onNewSection()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
+
+  stopActionMode();
   myNewSectionEditor->clear();
   myNewSectionEditor->setEditMode(false);
-  QString aSectName = QString( myCurve->getUnicSectionName().c_str() );
+  QString aSectName = QString( CurveCreator_UtilsICurve::getUniqSectionName( myCurve ).c_str() );
   myNewSectionEditor->setSectionParameters(aSectName, true, CurveCreator::Polyline );
-  emit subOperationStarted( myNewSectionEditor );
+  emit subOperationStarted( myNewSectionEditor, false );
 }
 
 void CurveCreator_Widget::onAddNewSection()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  CurveCreator::Coordinates aCoords;
-  myEdit->addSection( myNewSectionEditor->getName().toStdString(), myNewSectionEditor->getSectionType(),
-                      myNewSectionEditor->isClosed(), aCoords  );
-  mySectionView->sectionAdded( mySection );
-  QString aNewName = QString(myCurve->getUnicSectionName().c_str());
+  myCurve->addSection( myNewSectionEditor->getName().toStdString(),
+                       myNewSectionEditor->getSectionType(),
+                       myNewSectionEditor->isClosed() );
+  mySectionView->sectionAdded( -1 ); // add a new section to the end of list
+  QString aNewName = QString( CurveCreator_UtilsICurve::getUniqSectionName( myCurve ).c_str() );
   myNewSectionEditor->setSectionName(aNewName);
-  mySection++;
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
   onCancelSection();
 }
 
-void CurveCreator_Widget::onCancelPoint()
-{
-  emit subOperationFinished( myNewPointEditor );
-}
-
 void CurveCreator_Widget::onCancelSection()
 {
   emit subOperationFinished( myNewSectionEditor );
@@ -504,212 +563,153 @@ QAction* CurveCreator_Widget::createAction( ActionId theId, const QString& theNa
   return anAct;
 }
 
-QAction* CurveCreator_Widget::getAction(ActionId theId)
+QAction* CurveCreator_Widget::getAction( ActionId theId )
 {
   if( myActionMap.contains(theId) )
     return myActionMap[theId];
   return NULL;
 }
 
+QAction* CurveCreator_Widget::getAction( ActionMode theMode )
+{
+  ActionId anActionId = NONE_ID;
+  switch ( theMode ) {
+    case AdditionMode:
+      anActionId = ADDITION_MODE_ID;
+      break;
+    case ModificationMode:
+      anActionId = MODIFICATION_MODE_ID;
+      break;
+    case DetectionMode:
+      anActionId = DETECTION_MODE_ID;
+      break;
+    default:
+      break;
+  }
+  QAction* anAction = 0;
+  if ( anActionId != NONE_ID && myActionMap.contains( anActionId ) )
+    anAction = myActionMap[anActionId];
+  return anAction;
+}
+
 void CurveCreator_Widget::onEditSection( int theSection )
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
+  
+  stopActionMode();
   mySection = theSection;
   QString aSectName = QString::fromStdString( myCurve->getSectionName(theSection));
   bool isClosed = myCurve->isClosed(theSection);
-  CurveCreator::Type aType = myCurve->getType(theSection);
+  CurveCreator::SectionType aType = myCurve->getSectionType(theSection);
   myNewSectionEditor->setEditMode(true);
   myNewSectionEditor->setSectionParameters( aSectName, isClosed, aType );
 
-  emit subOperationStarted( myNewSectionEditor );
+  emit subOperationStarted( myNewSectionEditor, true );
 }
 
 void CurveCreator_Widget::onModifySection()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
   QString aName = myNewSectionEditor->getName();
   bool isClosed = myNewSectionEditor->isClosed();
-  CurveCreator::Type aSectType = myNewSectionEditor->getSectionType();
-  myEdit->startOperation();
-  myEdit->setClosed( isClosed, mySection );
-  myEdit->setName( aName.toStdString(), mySection );
-  myEdit->setType( aSectType, mySection );
-  myEdit->finishOperation();
-  mySectionView->sectionChanged(mySection);
-  updateUndoRedo();
-  onCancelSection();
-}
+  CurveCreator::SectionType aSectType = myNewSectionEditor->getSectionType();
+  if( myCurve->getSectionName(mySection) != aName.toStdString() )
+    myCurve->setSectionName( mySection , aName.toStdString() );
 
-void CurveCreator_Widget::onEditPoint( int theSection, int thePoint )
-{
-  if( !myNewPointEditor || !myEdit )
-    return;
-  mySection = theSection;
-  myPointNum = thePoint;
-  QString aSectName = QString::fromStdString( myCurve->getSectionName(theSection));
-  myNewPointEditor->setEditMode(true);
-  myNewPointEditor->setSectionName(aSectName);
-  myNewPointEditor->setDimension( myCurve->getDimension() );
-  CurveCreator::Coordinates aCoords = myCurve->getCoordinates(theSection,thePoint);
-  myNewPointEditor->setCoordinates(aCoords);
-  emit subOperationStarted( myNewPointEditor );
-}
+  bool isGeomModified = false;
 
-void CurveCreator_Widget::onModifyPoint()
-{
-  if( !myEdit )
-    return;
-  CurveCreator::Coordinates aCoords = myNewPointEditor->getCoordinates();
-  myEdit->setCoordinates( aCoords, mySection, myPointNum );
-  mySectionView->pointDataChanged( mySection, myPointNum );
+  if( myCurve->getSectionType(mySection) != aSectType ) {
+    myCurve->setSectionType( mySection, aSectType );
+    isGeomModified = true;
+  }
+
+  if( myCurve->isClosed(mySection) != isClosed ) {
+    myCurve->setClosed( mySection, isClosed );
+    isGeomModified = true;
+  }
+  mySectionView->sectionChanged(mySection);
   updateUndoRedo();
-  onCancelPoint();
+  onCancelSection();
 }
 
 void CurveCreator_Widget::onJoin()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
   QList<int> aSections = mySectionView->getSelectedSections();
   if( aSections.size() == 0 ){
     return;
   }
-  int aMainSect = aSections[0];
-  int aMainSectSize = myCurve->getNbPoints(aMainSect);
-  myEdit->startOperation();
-  for( int i = 1 ; i < aSections.size() ; i++ ){
-    int aSectNum = aSections[i] - (i-1);
-    myEdit->join( aMainSect, aSectNum );
-    mySectionView->sectionsRemoved( aSectNum );
+  stopActionMode();
+
+  std::list<int> aSectionsToJoin;
+  for( int i = 0; i < aSections.size() ; i++ ){
+    aSectionsToJoin.push_back( aSections[i] );
+  }
+  //int aMainSect = aSectionsToJoin.front();
+  //int aMainSectSize = myCurve->getNbPoints(aMainSect);
+  if ( myCurve->join( aSectionsToJoin ) )
+  {
+    std::list<int>::const_iterator anIt = aSectionsToJoin.begin(),
+                                   aLast = aSectionsToJoin.end();
+    // the first section should be skipped. It is not removed, but is modified
+    anIt++;
+    for ( ; anIt != aLast; anIt++ )
+      mySectionView->sectionsRemoved( *anIt );
   }
-  myEdit->finishOperation();
+
+  /* The update for the points of the main section
   int aNewSectSize = myCurve->getNbPoints(aMainSect);
   if( aNewSectSize != aMainSectSize )
-    mySectionView->pointsAdded( aMainSect, aMainSectSize, aNewSectSize-aMainSectSize );
+    mySectionView->pointsAdded( aMainSect, aMainSectSize, aNewSectSize-aMainSectSize );*/
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onRemove()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  QList< QPair<int,int> > aSelPoints = mySectionView->getSelectedPoints();
-  int aCurrSect=-1;
-  int aRemoveCnt = 0;
-  myEdit->startOperation();
-  for( int i = 0 ; i < aSelPoints.size() ; i++ ){
-    if( aCurrSect != aSelPoints[i].first ){
-      aRemoveCnt = 0;
-      aCurrSect = aSelPoints[i].first;
-    }
-    int aPntIndx = aSelPoints[i].second - aRemoveCnt;
-    myEdit->removePoints(aCurrSect,aPntIndx, 1);
-    mySectionView->pointsRemoved( aCurrSect, aPntIndx );
-    aRemoveCnt++;
-  }
-  QList<int> aSections = mySectionView->getSelectedSections();
-  for( int i = 0 ; i < aSections.size() ; i++ ){
-    int aSectNum = aSections[i] - (i);
-    myEdit->removeSection( aSectNum );
-    mySectionView->sectionsRemoved( aSectNum );
-  }
-  myEdit->finishOperation();
-  mySectionView->clearSelection();
-  updateUndoRedo();
-}
-
-void CurveCreator_Widget::onMoveUp()
-{
-  if( !myEdit )
-    return;
-  if( mySectionView->getSelectionType() == CurveCreator_TreeView::ST_SECTIONS ){
-    //Move sections
-    QList<int> aSections = mySectionView->getSelectedSections();
-    for( int i = 0 ; i < aSections.size() ; i++ ){
-      int anIndx = aSections[i];
-      myEdit->moveSection( anIndx, anIndx-1);
-      mySectionView->sectionsSwapped( anIndx, -1 );
-    }
-  }
-  else{
-    //Move points
-    QList< QPair<int,int> > aPoints = mySectionView->getSelectedPoints();
-    for( int i = 0 ; i < aPoints.size() ; i++ ){
-      int aSection = aPoints[i].first;
-      int aPoint = aPoints[i].second;
-      myEdit->movePoint(aSection, aPoint, aPoint-2);
-      mySectionView->pointsSwapped( aSection, aPoint, -1 );
-    }
-  }
-  updateUndoRedo();
-}
 
-void CurveCreator_Widget::onMoveDown()
-{
-  if( !myEdit )
-    return;
-  if( mySectionView->getSelectionType() == CurveCreator_TreeView::ST_SECTIONS ){
-    //Move sections
-    QList<int> aSections = mySectionView->getSelectedSections();
-    for( int i = aSections.size()-1 ; i >=0 ; i-- ){
-      int anIndx = aSections[i];
-      myEdit->moveSection( anIndx, anIndx+1);
-      mySectionView->sectionsSwapped( anIndx, 1 );
-    }
-  }
-  else{
-    //Move points
-    QList< QPair<int,int> > aPoints = mySectionView->getSelectedPoints();
-    for( int i = aPoints.size() - 1; i >= 0 ; i--  ){
-      int aSection = aPoints[i].first;
-      int aPoint = aPoints[i].second;
-      myEdit->movePoint(aSection, aPoint, aPoint+1);
-      mySectionView->pointsSwapped( aSection, aPoint, 1 );
-    }
+  switch( getActionMode() ) {
+    case NoneMode:
+      removeSection();
+    break;
+    case ModificationMode:
+      removePoint();
+    break;
+    default:
+      break;
   }
-  updateUndoRedo();
 }
 
 void CurveCreator_Widget::onClearAll()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  myEdit->clear();
+  stopActionMode();
+  myCurve->clear();
   mySectionView->reset();
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onJoinAll()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  myEdit->join();
-  mySectionView->reset();
-  onSelectionChanged();
-  updateUndoRedo();
-}
+  stopActionMode();
 
-void CurveCreator_Widget::onInsertSectionBefore()
-{
-
-}
-
-void CurveCreator_Widget::onInsertSectionAfter()
-{
-
-}
-
-void CurveCreator_Widget::onInsertPointBefore()
-{
-
-}
-
-void CurveCreator_Widget::onInsertPointAfter()
-{
+  std::list<int> aSectionsToJoin;
+  for( int i = 0, aNb = myCurve->getNbSections(); i < aNb ; i++ ){
+    aSectionsToJoin.push_back( i );
+  }
+  bool aRes = myCurve->join( aSectionsToJoin );
 
+  mySectionView->reset();
+  updateActionsStates();
+  updateUndoRedo();
 }
 
 void CurveCreator_Widget::onUndoSettings()
@@ -719,104 +719,107 @@ void CurveCreator_Widget::onUndoSettings()
 
 void CurveCreator_Widget::onSetSpline()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
+  stopActionMode();
   QList<int> aSelSections = mySectionView->getSelectedSections();
-  myEdit->startOperation();
   for( int i = 0 ; i < aSelSections.size() ; i++ ){
-    myEdit->setType(CurveCreator::BSpline, aSelSections[i]);
+    myCurve->setSectionType(aSelSections[i], CurveCreator::Spline );
     mySectionView->sectionChanged(aSelSections[i]);
   }
-  myEdit->finishOperation();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onSetPolyline()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  myEdit->startOperation();
+  stopActionMode();
   QList<int> aSelSections = mySectionView->getSelectedSections();
   for( int i = 0 ; i < aSelSections.size() ; i++ ){
-    myEdit->setType(CurveCreator::Polyline, aSelSections[i]);
-    mySectionView->sectionChanged(aSelSections[i]);
+    myCurve->setSectionType( aSelSections[i], CurveCreator::Polyline );
+    mySectionView->sectionChanged( aSelSections[i] );
   }
-  myEdit->finishOperation();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onCloseSections()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  myEdit->startOperation();
+  stopActionMode();
   QList<int> aSelSections = mySectionView->getSelectedSections();
   for( int i = 0 ; i < aSelSections.size() ; i++ ){
-    myEdit->setClosed(true, aSelSections[i]);
+    myCurve->setClosed(aSelSections[i], true);
     mySectionView->sectionChanged(aSelSections[i]);
   }
-  myEdit->finishOperation();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onUncloseSections()
 {
-  if( !myEdit )
+  if( !myCurve )
     return;
-  myEdit->startOperation();
+  stopActionMode();
   QList<int> aSelSections = mySectionView->getSelectedSections();
   for( int i = 0 ; i < aSelSections.size() ; i++ ){
-    myEdit->setClosed(false, aSelSections[i]);
+    myCurve->setClosed(aSelSections[i], false);
     mySectionView->sectionChanged(aSelSections[i]);
   }
-  myEdit->finishOperation();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onUndo()
 {
-    if( !myEdit )
-      return;
-    myEdit->undo();
-    mySectionView->reset();
-    updateUndoRedo();
+  if( !myCurve )
+    return;
+
+  CurveCreator_ICurve::SectionToPointList aPoints;
+  startCurveModification( aPoints, false );
+  myCurve->undo();
+  finishCurveModification();
+  mySectionView->reset();
 }
 
 void CurveCreator_Widget::onRedo()
 {
-    if( !myEdit )
-      return;
-    myEdit->redo();
-    mySectionView->reset();
-    updateUndoRedo();
+  if( !myCurve )
+    return;
+  CurveCreator_ICurve::SectionToPointList aPoints;
+  startCurveModification( aPoints, false );
+  myCurve->redo();
+  finishCurveModification();
+  mySectionView->reset();
 }
 
 void CurveCreator_Widget::updateUndoRedo()
 {
-    QAction* anAct = myActionMap[UNDO_ID];
-    if( anAct != 0 ){
-        if( myEdit->getNbUndo() != 0 ){
-            anAct->setEnabled(true);
-        }
-        else{
-            anAct->setDisabled(true);
-        }
+  if( !myCurve )
+    return;
+  QAction* anAct = myActionMap[UNDO_ID];
+  if( anAct != 0 ){
+    if( myCurve->getNbUndo() != 0 ){
+      anAct->setEnabled(true);
     }
-    anAct = myActionMap[REDO_ID];
-    if( anAct != 0 ){
-        if( myEdit->getNbRedo() != 0 ){
-            anAct->setEnabled(true);
-        }
-        else{
-            anAct->setDisabled(true);
-        }
+    else{
+      anAct->setDisabled(true);
+    }
+  }
+  anAct = myActionMap[REDO_ID];
+  if( anAct != 0 ){
+    if( myCurve->getNbRedo() != 0 ){
+      anAct->setEnabled(true);
     }
+    else{
+      anAct->setDisabled(true);
+    }
+  }
 }
 
 void CurveCreator_Widget::onContextMenu( QPoint thePoint )
 {
   QList<ActionId> aContextActions;
-  aContextActions << CLEAR_ALL_ID << JOIN_ALL_ID << SEPARATOR_ID <<
+  aContextActions << CLEAR_ALL_ID << JOIN_ID << JOIN_ALL_ID << SEPARATOR_ID <<
                      CLOSE_SECTIONS_ID << UNCLOSE_SECTIONS_ID << SET_SECTIONS_POLYLINE_ID <<
                      SET_SECTIONS_SPLINE_ID;
   QPoint aGlPoint = mySectionView->mapToGlobal(thePoint);
@@ -857,57 +860,117 @@ QList<int> CurveCreator_Widget::getSelectedSections()
   return mySectionView->getSelectedSections();
 }
 
-QList< QPair< int, int > > CurveCreator_Widget::getSelectedPoints()
+void CurveCreator_Widget::setSelectedSections( const QList<int>& theSections )
+{
+  mySectionView->setSelectedSections( theSections );
+  updateActionsStates();
+  updateUndoRedo();
+}
+
+/**
+ * According to the widget state, performs the remove action
+ */
+void CurveCreator_Widget::removeSelected()
+{
+  onRemove();
+}
+
+/**
+ * Checks whether there are some selection to be removed
+ */
+bool CurveCreator_Widget::removeEnabled()
 {
-  return mySectionView->getSelectedPoints();
+  bool isEnabled = getActionMode() == ModificationMode;
+  if ( !isEnabled ) {
+    QList<int> aSelSections = mySectionView->getSelectedSections();
+    CurveCreator_TreeView::SelectionType aSelType = mySectionView->getSelectionType();
+    isEnabled = aSelType == CurveCreator_TreeView::ST_SECTIONS &&
+                aSelSections.size() == 1;
+  }
+  return isEnabled;
 }
 
-bool CurveCreator_Widget::isInstantSketchingEnabled() const
+void CurveCreator_Widget::setActionMode( const ActionMode& theMode )
 {
-  if( myNewPointEditor )
-    return myNewPointEditor->isInstantSketchingEnabled();
-  return false;
+  ActionMode aPrevMode = getActionMode();
+  QAction* aPrevAction = getAction( aPrevMode );
+  QAction* anAction = getAction( theMode );
+  switch ( theMode ) {
+    case NoneMode:
+    case AdditionMode: {
+      if ( aPrevAction ) {
+        if ( aPrevAction->isChecked() ) {
+          aPrevAction->setChecked( false );
+        }
+      }
+      if ( aPrevMode == ModificationMode )
+        onModificationMode( false );
+      if ( aPrevMode == AdditionMode )
+        onAdditionMode( false );
+
+      if ( theMode == AdditionMode )
+      {
+        anAction->setChecked( true );
+        onModeChanged( true );
+      }
+    }
+    break;
+    break;
+    case ModificationMode:
+    {
+      //TODO
+    }
+    break;
+    case DetectionMode:
+      break;
+  }
 }
 
-void CurveCreator_Widget::setInstantSketchingEnabled( const bool theState )
+CurveCreator_Widget::ActionMode CurveCreator_Widget::getActionMode() const
 {
-  if( myNewPointEditor )
-    myNewPointEditor->setInstantSketchingEnabled( theState );
+  ActionMode aMode = NoneMode;
+
+  if ( myActionMap[ADDITION_MODE_ID]->isChecked() )
+    aMode = AdditionMode;
+  else if ( myActionMap[MODIFICATION_MODE_ID]->isChecked() )
+    aMode = ModificationMode;
+  else if ( myActionMap[DETECTION_MODE_ID]->isChecked() )
+    aMode = DetectionMode;
+
+  return aMode;
+}
+
+void CurveCreator_Widget::SetViewer2DMode(const bool To2D)
+{
+  if (myOCCViewer) {
+    if (To2D) {
+      myOld2DMode = OCCViewer_Utilities::setViewer2DMode
+                    (myOCCViewer, OCCViewer_ViewWindow::XYPlane);
+    } else {
+      OCCViewer_Utilities::setViewer2DMode(myOCCViewer, myOld2DMode);
+    }
+  }
 }
 
 //=================================================================================
-// function : GeometryGUI::onGetPointByClick()
-// purpose  : Manage mouse press events in Additon mode
+// function : GeometryGUI::addCoordsByClick()
+// purpose  : Manage mouse press events in Addition mode
 //=================================================================================
-void CurveCreator_Widget::onGetPointByClick( SUIT_ViewWindow* theViewWindow, QMouseEvent* pe )
+void CurveCreator_Widget::addCoordsByClick( QMouseEvent* pe )
 {
-  if ( myNewPointEditor && theViewWindow->getViewManager()->getType() == OCCViewer_Viewer::Type() &&
-       pe->modifiers() != Qt::ControlModifier ) {
-    OCCViewer_Viewer* anOCCViewer =
-      ( (OCCViewer_ViewManager*)( theViewWindow->getViewManager() ) )->getOCCViewer();
-    Handle(AIS_InteractiveContext) ic = anOCCViewer->getAISContext();
-
-    gp_Pnt aPnt;    
+  if (pe->button() != Qt::LeftButton)
+    return;
 
-    ic->InitSelected();
-    if ( pe->modifiers() == Qt::ShiftModifier )
-      ic->ShiftSelect();  // Append selection
-    else
-      ic->Select();       // New selection
+  if ( pe->modifiers() != Qt::ControlModifier ) {
+    Handle(AIS_InteractiveContext) ic = getAISContext();
+    if ( ic.IsNull() )
+      return;
 
-    /*TopoDS_Shape aShape;
+    gp_Pnt aPnt;    
+    OCCViewer_ViewPort3d* vp = getViewPort();
 
-    ic->InitSelected();
-    if ( ic->MoreSelected() )
-      aShape = ic->SelectedShape();
+    aPnt = CurveCreator_Utils::ConvertClickToPoint( pe->x(), pe->y(), vp->getView() );
 
-    if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
-      aPnt = BRep_Tool::Pnt( TopoDS::Vertex( ic->SelectedShape() ) );
-    else*/
-    {
-      OCCViewer_ViewPort3d* vp =  ((OCCViewer_ViewWindow*)theViewWindow)->getViewPort();
-      aPnt = GEOMUtils::ConvertClickToPoint( pe->x(), pe->y(), vp->getView() );
-    }
     // set the coordinates into dialog
     CurveCreator::Coordinates aCoords;
     aCoords.push_back( aPnt.X() );
@@ -915,28 +978,625 @@ void CurveCreator_Widget::onGetPointByClick( SUIT_ViewWindow* theViewWindow, QMo
     if ( myCurve->getDimension() == 3 ) {
       aCoords.push_back( aPnt.Z() );
     }
-    onAddNewPoint(aCoords);
-//    myNewPointEditor->setCoordinates( aCoords );
+    addNewPoint(aCoords);
   }
 }
 
-//=================================================================================
-// function : GeometryGUI::onPointDrag()
-// purpose  : Manage mouse move events in Modification mode
-//=================================================================================
-void CurveCreator_Widget::onPointDrag( SUIT_ViewWindow* theViewWindow, QMouseEvent* pe )
+/**
+ * Set the same coordinates on two section extremities.
+ * Usage: build a closed contour with several sections.
+ * Works with two points selected, at the extremities of different sections.
+ * The second point gets the coordinates of the first.
+ */
+void CurveCreator_Widget::onBringTogether()
 {
-  if ( !(pe->buttons() & Qt::LeftButton) )
+  MESSAGE("onBringTogether");
+  ActionMode aMode = getActionMode();
+  if ( aMode != ModificationMode )
     return;
-  if ( (pe->pos() - myDragStartPosition).manhattanLength() < QApplication::startDragDistance() )
+  int nbPoints = myLocalPoints.size();
+  MESSAGE("number of selected points: " << nbPoints);
+  if (nbPoints != 2)
+    {
+      MESSAGE("works only with two points taken at the extremities of different sections, nothing done");
+      return;
+    }
+
+  CurveCreator_ICurve::SectionToPointList::const_iterator anIt = myLocalPoints.begin(),
+                                                          aLast = myLocalPoints.end();
+  std::vector<int> sections(nbPoints);
+  std::vector<int> iPoints(nbPoints);
+  std::vector<int> nbPtsSection(nbPoints);
+  std::vector<double> x(nbPoints);
+  std::vector<double> y(nbPoints);
+  int i = 0;
+  for ( ; anIt != aLast; anIt++, i++ )
+    {
+      CurveCreator_ICurve::SectionToPoint aSPoint = *anIt;
+      sections[i] = aSPoint.first;
+      iPoints[i] = aSPoint.second;
+      nbPtsSection[i] = myCurve->getNbPoints(sections[i]);
+      if ((iPoints[i] != 0) && (iPoints[i] != nbPtsSection[i]-1))
+        {
+          MESSAGE("a point is not on a section extremity, nothing done");
+          return;
+        }
+      gp_Pnt aPoint;
+      CurveCreator_UtilsICurve::getPoint( myCurve, sections[i], iPoints[i], aPoint );
+      x[i] = aPoint.X();
+      y[i] = aPoint.Y();
+      MESSAGE("point: " << sections[i] << " " << iPoints[i] << " " << x[i] << " " << y[i]);
+    }
+  if (sections[1] == sections[0])
+    {
+      MESSAGE("the two points must be at the extremities of different sections, nothing done");
+      return;
+    }
+
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
+  startCurveModification( aSelPoints );
+
+  CurveCreator::Coordinates aChangedPos;
+  aChangedPos.push_back( x[0] ); // apply the first point coordinates to the second point.
+  aChangedPos.push_back( y[0] );
+  myCurve->setPoint( sections[1], iPoints[1], aChangedPos );
+
+  finishCurveModification( aSelPoints );
+}
+
+/**
+ * Manage mouse press events
+ * \param theWindow an owner of the signal
+ * \param theEvent a mouse event
+ */
+void CurveCreator_Widget::onMousePress( SUIT_ViewWindow*, QMouseEvent* theEvent )
+{
+  if ( theEvent->button() != Qt::LeftButton )
     return;
-/*  
-  QDrag *drag = new QDrag(this);
-  QMimeData *mimeData = new QMimeData;
-  
-  mimeData->setData(mimeType, data);
-  drag->setMimeData(mimeData);
-  
-  Qt::DropAction dropAction = drag->exec(Qt::CopyAction | Qt::MoveAction);
-  */
+
+  // Initialize the starting point
+  myStartPoint.setX( theEvent->x() );
+  myStartPoint.setY( theEvent->y() );
+
+  switch( getActionMode() ) {
+    case ModificationMode: {
+      //store initial cursor position for Drag&Drop
+      setDragStarted( true, theEvent->pos() );
+      break;
+    }
+    case AdditionMode: {
+      addCoordsByClick( theEvent );
+      break;
+    }
+    default:
+      break;
+  }
+}
+
+/**
+ * Manage mouse release events in Modification mode
+ * \param theWindow an owner of the signal
+ * \param theEvent a mouse event
+ */
+void CurveCreator_Widget::onMouseRelease( SUIT_ViewWindow* theWindow, QMouseEvent* theEvent )
+{
+  ActionMode aMode = getActionMode();
+  if ( aMode != ModificationMode )
+  {
+    // Emit selectionChanged() signal
+    getOCCViewer()->performSelectionChanged();
+
+    if ( aMode == AdditionMode )
+    {
+      Handle(AIS_InteractiveContext) aCtx = getAISContext();
+      if ( !aCtx.IsNull() )
+        aCtx->ClearSelected( Standard_True );
+    }
+    return;
+  } 
+  if (theEvent->button() != Qt::LeftButton) return;
+  if (!theWindow->inherits("OCCViewer_ViewWindow")) return;
+
+  // Initialize the ending point
+  myEndPoint.setX( theEvent->x() );
+  myEndPoint.setY( theEvent->y() );
+
+  bool aHasShift = ( theEvent->modifiers() & Qt::ShiftModifier );
+
+  // Highlight detected objects
+  Handle(AIS_InteractiveContext) aCtx = getAISContext();
+  if ( !aCtx.IsNull() )
+  {
+    OCCViewer_ViewWindow* aView = (OCCViewer_ViewWindow*) theWindow;
+    if (!aView)
+      return;
+
+    if (!aHasShift)
+      aCtx->ClearCurrents( false );
+
+    Handle(V3d_View) aView3d = aView->getViewPort()->getView();
+    if ( !aView3d.IsNull() )
+    {
+      // Initialize the single selection if start and end points are equal,
+      // otherwise a rectangular selection.
+      if ( myStartPoint == myEndPoint )
+      {
+        aCtx->MoveTo( myEndPoint.x(), myEndPoint.y(), aView3d, Standard_True );
+        if ( aHasShift )
+          aCtx->ShiftSelect( Standard_True );
+        else
+          aCtx->Select( Standard_True );
+      }
+      else
+      {
+        if ( aHasShift )
+          aCtx->ShiftSelect( myStartPoint.x(), myStartPoint.y(), myEndPoint.x(), myEndPoint.y(),
+                             aView3d, Standard_False );
+        else
+          aCtx->Select( myStartPoint.x(), myStartPoint.y(), myEndPoint.x(), myEndPoint.y(),
+                        aView3d, Standard_False );
+      }
+    }
+  }
+
+  if ( myDragStarted ) {
+    bool isDragged = myDragged;
+    CurveCreator_ICurve::SectionToPointList aDraggedPoints;
+    QMap<CurveCreator_ICurve::SectionToPoint, CurveCreator::Coordinates > anInitialDragPointsCoords;
+    if ( myDragged ) {
+      aDraggedPoints = myDragPoints;
+      anInitialDragPointsCoords = myInitialDragPointsCoords;
+    }
+
+    setDragStarted( false );
+
+    if ( aDraggedPoints.size() > 0 ) {
+      // Collect old coordinates of the dragged points
+      CurveCreator_ICurve::SectionToPointCoordsList anOldPoints;
+      foreach ( const CurveCreator_ICurve::SectionToPoint aSectionToPoint, anInitialDragPointsCoords.keys() ) {
+        CurveCreator::Coordinates aCoords = anInitialDragPointsCoords.value( aSectionToPoint );
+        anOldPoints.push_back( std::make_pair( aSectionToPoint, aCoords ) );
+      }
+
+      if ( myCurve->canPointsBeSorted() ) {
+        // Add old coordinates of the curve points (except the dragged points) to the list
+        for( int aSectionId = 0 ; aSectionId < myCurve->getNbSections() ; aSectionId++ ) {
+          CurveCreator::Coordinates aCoords;
+          for ( int aPointId = 0, aNb = myCurve->getNbPoints( aSectionId ); aPointId < aNb; aPointId++ ) {
+            aCoords = myCurve->getPoint( aSectionId, aPointId );
+            if ( aCoords.size() < 2 ) {
+              continue;
+            }
+            
+            CurveCreator_ICurve::SectionToPoint aSectionToPoint = std::make_pair( aSectionId, aPointId );
+
+            if ( !anInitialDragPointsCoords.contains( aSectionToPoint ) ) {
+              anOldPoints.push_back( std::make_pair( aSectionToPoint, aCoords ) );
+            }
+          }
+        }
+        
+        // Apply points sorting
+        CurveCreator_ICurve::SectionToPointList aPoints;
+        startCurveModification( aPoints, false );
+
+        myCurve->setSkipSorting( false );
+
+        CurveCreator_ICurve::SectionToPointCoordsList aCoordList;
+        CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aDraggedPoints.begin(),
+                                                                aLast = aDraggedPoints.end();
+        for ( ; anIt != aLast; anIt++ ) {
+          int aSectionId = anIt->first;
+          int aPointId = anIt->second;
+          CurveCreator::Coordinates aPos = myCurve->getPoint( aSectionId, aPointId );
+
+          aCoordList.push_back(
+            std::make_pair( std::make_pair( aSectionId, aPointId ), aPos ) );
+        }
+
+        myCurve->setSeveralPoints( aCoordList, false );
+    
+        finishCurveModification( aDraggedPoints );
+      } else {
+        // if the drag of some points has happened, restore the drag selection
+        START_MEASURE_TIME;
+        setSelectedPoints( aDraggedPoints );
+        END_MEASURE_TIME( "drop" );
+      }
+
+      // Save drag difference
+      myCurve->saveCoordDiff( anOldPoints );
+    }
+  }
+  else // check whether the segment is clicked an a new point should be added to the segment
+  {
+    if ( myStartPoint.x() == myEndPoint.x() && myStartPoint.y() == myEndPoint.y() )
+      insertPointToSelectedSegment( myEndPoint.x(), myStartPoint.y() );
+  }
+
+  // updates the input panel table to show the selected point coordinates
+  updateLocalPointView();
+  updateUndoRedo();
+}
+
+/**
+ * Manage mouse move events in Modification mode
+ * \param theWindow an owner of the signal
+ * \param theEvent a mouse event
+ */
+void CurveCreator_Widget::onMouseMove( SUIT_ViewWindow*, QMouseEvent* theEvent )
+{
+  if ( getActionMode() != ModificationMode || !myDragStarted )
+    return;
+
+  QPoint aPos = theEvent->pos();
+  if ( (aPos - myDragStartPosition).manhattanLength() < QApplication::startDragDistance() )
+    return;
+
+  START_MEASURE_TIME;
+
+  moveSelectedPoints( aPos.x(), aPos.y() );
+  myDragStartPosition = aPos;
+
+  END_MEASURE_TIME( "drag" );
+}
+
+/**
+ * Set zero viewer by the last view closed in
+ * \param theManager a viewer manager
+ */
+void CurveCreator_Widget::onLastViewClosed( SUIT_ViewManager* theManager )
+{
+  myOCCViewer = 0;
+}
+
+void CurveCreator_Widget::onMousePress( QMouseEvent* theEvent )
+{
+  onMousePress( 0, theEvent );
+}
+
+void CurveCreator_Widget::onMouseRelease( QMouseEvent* theEvent )
+{
+  onMouseRelease( 0, theEvent );
+}
+
+void CurveCreator_Widget::onMouseMove( QMouseEvent* theEvent )
+{
+  onMouseMove( 0, theEvent );
+}
+
+void CurveCreator_Widget::onCellChanged( int theRow, int theColumn )
+{
+  int aCurrSect = myLocalPointView->getSectionId( theRow );
+  int aPntIndex = myLocalPointView->getPointId( theRow );
+
+  if ( aPntIndex < 0 )
+    return;
+
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
+  startCurveModification( aSelPoints );
+
+  double aX  = myLocalPointView->item( theRow, 2 )->data( Qt::UserRole ).toDouble();
+  double anY = myLocalPointView->item( theRow, 3 )->data( Qt::UserRole ).toDouble();
+  CurveCreator::Coordinates aChangedPos;
+  aChangedPos.push_back( aX );
+  aChangedPos.push_back( anY );
+  myCurve->setPoint( aCurrSect, aPntIndex, aChangedPos );
+
+  finishCurveModification( aSelPoints );
+}
+
+/**
+ * Removes a selected section from the curve. Updates undo/redo status
+ */
+void CurveCreator_Widget::removeSection()
+{
+  stopActionMode();
+
+  QList<int> aSections = mySectionView->getSelectedSections();
+  for( int i = 0 ; i < aSections.size() ; i++ ){
+    int aSectNum = aSections[i] - (i);
+    myCurve->removeSection( aSectNum );
+    mySectionView->sectionsRemoved( aSectNum );
+  }
+  mySectionView->clearSelection();
+  updateUndoRedo();
+}
+
+/**
+ * Removes a selected points from the curve. Updates undo/redo status
+ */
+void CurveCreator_Widget::removePoint()
+{
+  CurveCreator_ICurve::SectionToPointList aPoints;
+  getSelectedPoints( aPoints );
+  if ( aPoints.size() == 0 )
+    return;
+
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
+  startCurveModification( aSelPoints, false );
+
+  myCurve->removeSeveralPoints( aPoints );
+  finishCurveModification( CurveCreator_ICurve::SectionToPointList() );
+  mySectionView->reset();
+}
+
+void CurveCreator_Widget::addNewPoint(const CurveCreator::Coordinates& theCoords)
+{
+  if( !myCurve )
+    return;
+  QList<int> aSections = mySectionView->getSelectedSections();
+  if( aSections.size() == 0 ){
+    return;
+  }
+  int aSection = aSections[0];
+  myCurve->addPoints(theCoords, aSection); // add to the end of section
+  mySectionView->pointsAdded( aSection, myCurve->getNbPoints( aSection ) );
+  updateActionsStates();
+  updateUndoRedo();
+}
+
+void CurveCreator_Widget::insertPointToSelectedSegment( const int theX,
+                                                        const int theY )
+{
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+
+  OCCViewer_ViewPort3d* aViewPort = getViewPort();
+  Handle(V3d_View) aView;
+  if ( aViewPort )
+    aView = aViewPort->getView();
+
+  if ( aContext.IsNull() || aView.IsNull() )
+    return;
+  gp_Pnt aPoint;
+  gp_Pnt aPoint1, aPoint2;
+  Handle(AIS_InteractiveObject) anAISObject = myCurve->getAISObject();
+  bool isFoundPoint = CurveCreator_Utils::pointOnObject( aView, anAISObject, theX, theY,
+                                                         aPoint, aPoint1, aPoint2 );
+  if ( !isFoundPoint )
+    return;
+
+  // insert the point to the model curve
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
+  startCurveModification( aSelPoints );
+
+  CurveCreator::Coordinates aCoords;
+  aCoords.push_back( aPoint.X() );
+  aCoords.push_back( aPoint.Y() );
+
+  CurveCreator_ICurve::SectionToPointList aPoints1, aPoints2;
+  findSectionsToPoints( aPoint1.X(), aPoint1.Y(), aPoints1 );
+  findSectionsToPoints( aPoint2.X(), aPoint2.Y(), aPoints2 );
+  CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aPoints1.begin(),
+                                                          aLast = aPoints1.end();
+  int aSectionId = -1;
+  // find the indices of the neighbour point
+  // there can be a case when a new point is added into two sections
+  int aPoint1Id = -1, aPoint2Id = -1;
+  for ( ; anIt != aLast && aSectionId < 0; anIt++ ) {
+    int aSectionCur = anIt->first;
+    CurveCreator_ICurve::SectionToPointList::const_iterator anIt2 = aPoints2.begin(),
+                                                            aLast2 = aPoints2.end();
+    for ( ; anIt2 != aLast2 && aSectionId < 0; anIt2++ ) {
+      if ( anIt2->first == aSectionCur ) {
+        aSectionId = aSectionCur;
+        aPoint1Id = anIt->second;
+        aPoint2Id = anIt2->second;
+      }
+    }
+  }
+
+  int anInsertPos = -1;
+  int aLastPoint = myCurve->getNbPoints( aSectionId )-1; 
+  if ( ( aPoint1Id == aLastPoint && aPoint2Id == 0 ) ||
+       ( aPoint2Id == aLastPoint && aPoint1Id == 0 ) )
+    anInsertPos = -1; // if the section happens between first and last points
+  else
+    anInsertPos = aPoint1Id < aPoint2Id ? aPoint1Id + 1 : aPoint2Id + 1;
+
+  myCurve->addPoints( aCoords, aSectionId, anInsertPos );
+  mySectionView->pointsAdded( aSectionId, myCurve->getNbPoints( aSectionId ) );
+
+  finishCurveModification( aSelPoints );
+
+  setSelectedPoints();
+}
+
+void CurveCreator_Widget::moveSelectedPoints( const int theXPosition,
+                                              const int theYPosition )
+{
+  OCCViewer_ViewPort3d* aViewPort = getViewPort();
+  if ( !aViewPort )
+    return;
+
+  CurveCreator_ICurve::SectionToPointList aPoints;
+  startCurveModification( aPoints, false );
+
+  gp_Pnt aStartPnt = CurveCreator_Utils::ConvertClickToPoint( myDragStartPosition.x(),
+                                                              myDragStartPosition.y(),
+                                                              aViewPort->getView() );
+  gp_Pnt anEndPnt = CurveCreator_Utils::ConvertClickToPoint( theXPosition, theYPosition,
+                                                             aViewPort->getView() );
+  double aXDelta = aStartPnt.X() - anEndPnt.X();
+  double anYDelta = aStartPnt.Y() - anEndPnt.Y();
+
+  CurveCreator_ICurve::SectionToPointCoordsList aCoordList;
+  CurveCreator::Coordinates aChangedPos;
+  CurveCreator_ICurve::SectionToPointList::const_iterator anIt = myDragPoints.begin(),
+                                                          aLast = myDragPoints.end();
+  for ( ; anIt != aLast; anIt++ ) {
+    int aSectionId = anIt->first;
+    int aPointId = anIt->second;
+    aChangedPos = myCurve->getPoint( aSectionId, aPointId );
+    if ( aChangedPos.size() < 2 )
+      continue;
+
+    // Remember drag points coordinates
+    if ( !myDragged ) {
+      myInitialDragPointsCoords.insert( std::make_pair( aSectionId, aPointId ), aChangedPos );
+    }
+
+    aChangedPos[0] = aChangedPos[0] - aXDelta;
+    aChangedPos[1] = aChangedPos[1] - anYDelta;
+    
+    aCoordList.push_back(
+      std::make_pair(std::make_pair( aSectionId, aPointId ), 
+                     aChangedPos ));
+  }
+  myCurve->setSeveralPoints( aCoordList, false );
+
+  myDragged = true;
+  finishCurveModification( myDragPoints );
+}
+
+void CurveCreator_Widget::updateLocalPointView()
+{
+  if ( myDragStarted )
+    return;
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+  if ( aContext.IsNull() )
+    return;
+
+  CurveCreator_Utils::getSelectedPoints( aContext, myCurve, myLocalPoints );
+  int aNbPoints = myLocalPoints.size();
+
+  bool isRowLimit = aNbPoints > myLocalPointRowLimit;
+  myLocalPointView->setVisible( getActionMode() == ModificationMode && !isRowLimit );
+
+  if ( !isRowLimit ) {
+    bool isBlocked = myLocalPointView->blockSignals(true);
+
+    myLocalPointView->setLocalPointsToTable( myLocalPoints );
+
+    myLocalPointView->blockSignals( isBlocked );
+  }
+}
+
+/**
+ * 
+ */
+void CurveCreator_Widget::setLocalPointContext( const bool theOpen, const bool isUpdateTable )
+{
+  CurveCreator_Utils::setLocalPointContext( myCurve, getAISContext(), theOpen );
+  if ( !theOpen && isUpdateTable )
+    updateLocalPointView();
+}
+
+/**
+ * Set drag operation started. Save the position and a list of dragged points
+ * \param theState the drag operation state: started/finished
+ * \param thePoint the start drag position
+ */
+void CurveCreator_Widget::setDragStarted( const bool theState, const QPoint& thePoint )
+{
+  if ( theState ) {
+    getSelectedPoints( myDragPoints );
+
+    myDragStarted = myDragPoints.size();
+    myDragStartPosition = thePoint;
+    if ( myDragStarted ) {
+      // change a viewer interaction style in order to avoid a select rectangle build
+      myDragInteractionStyle = changeInteractionStyle( SUIT_ViewModel::KEY_FREE );
+      myCurve->setSkipSorting( true );
+    }
+  }
+  else {
+    if ( myDragStarted )
+      changeInteractionStyle( myDragInteractionStyle );
+    myDragStarted = false;
+    myDragPoints.clear();
+    myInitialDragPointsCoords.clear();
+  }
+  myDragged = false;
+}
+
+void CurveCreator_Widget::getSelectedPoints( CurveCreator_ICurve::SectionToPointList& thePoints )
+{
+  thePoints.clear();
+  thePoints = myLocalPoints;
+}
+
+void CurveCreator_Widget::setSelectedPoints( const CurveCreator_ICurve::SectionToPointList& thePoints )
+{
+  if ( myDragStarted )
+    return;
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+  if ( aContext.IsNull() || !aContext->HasOpenedContext() )
+    return;
+
+  CurveCreator_Utils::setSelectedPoints( aContext, myCurve, thePoints );
+
+  updateLocalPointView();
+}
+
+void CurveCreator_Widget::stopActionMode()
+{
+  setActionMode( NoneMode );
+}
+
+/**
+ * Get viewer information before perform the curve modification.
+ * Take a list of selected cuve points an close local context.
+ * The context should be closed because the curve presentation is
+ * redisplayed and if it is not closed, when we close the local context
+ * later, the presentation shown in the local context is disappeared.
+ * \param thePoints an output list of curve selected points
+ * \param theFillPoints a flag whether the selection list should be filled
+ */
+void CurveCreator_Widget::startCurveModification(
+                           CurveCreator_ICurve::SectionToPointList& thePoints,
+                           const bool theFillPoints )
+{
+  if ( theFillPoints ) {
+    thePoints.clear();
+    getSelectedPoints( thePoints );
+  }
+  setLocalPointContext( false );
+}
+
+/**
+ * Restore the viewer state after the curve modification is done.
+ * Open local context and select given points inside it.
+ * \param thePoints a list of curve selected points
+ */
+void CurveCreator_Widget::finishCurveModification(
+                           const CurveCreator_ICurve::SectionToPointList& thePoints )
+{
+  if ( getActionMode() == ModificationMode )
+    setLocalPointContext( true );
+  setSelectedPoints( thePoints );
+  updateUndoRedo();
+}
+
+/**
+ * Returns a point index in the model curve by the point coordinates in the viewer
+ * \param theX the X coordinate of the point
+ * \param theY the Y coordinate of the point
+ */
+int CurveCreator_Widget::findLocalPointIndex( int theSectionId, double theX, double theY )
+{
+  return CurveCreator_UtilsICurve::findLocalPointIndex( myCurve, theSectionId, theX, theY );
+}
+
+void CurveCreator_Widget::findSectionsToPoints( const double theX, const double theY,
+                                 CurveCreator_ICurve::SectionToPointList& thePoints )
+{
+  return CurveCreator_UtilsICurve::findSectionsToPoints( myCurve, theX, theY, thePoints );
+}
+
+void CurveCreator_Widget::convert( const CurveCreator_ICurve::SectionToPointList& thePoints,
+                                   QMap<int, QList<int> >& theConvPoints )
+{
+  return CurveCreator_UtilsICurve::convert( thePoints, theConvPoints );
+}
+
+/**
+ * Returns whether the container has the value
+ * \param theList a container of values
+ * \param theValue a value
+ */
+bool CurveCreator_Widget::contains( const CurveCreator_ICurve::SectionToPointList& theList,
+                                    const CurveCreator_ICurve::SectionToPoint& theValue ) const
+{
+  return CurveCreator_UtilsICurve::contains( theList, theValue );
 }