X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FXGUI%2FXGUI_ObjectsBrowser.cpp;h=983f4c37ea1d035a2624fd5e982d4a9ca27883a2;hb=00a3c1675ca0ead43040cafa3a99f984e1d8177b;hp=fb43e76122572d1bcb6b7f84ebfad54b4d7f5986;hpb=a319904887d7def795af910efc8fc52a746eb56f;p=modules%2Fshaper.git

diff --git a/src/XGUI/XGUI_ObjectsBrowser.cpp b/src/XGUI/XGUI_ObjectsBrowser.cpp
index fb43e7612..983f4c37e 100644
--- a/src/XGUI/XGUI_ObjectsBrowser.cpp
+++ b/src/XGUI/XGUI_ObjectsBrowser.cpp
@@ -1,46 +1,635 @@
+// Copyright (C) 2014-2017  CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or
+// email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
+//
+
 #include "XGUI_ObjectsBrowser.h"
-#include "XGUI_DocumentDataModel.h"
+#include "XGUI_Tools.h"
+#include "XGUI_DataModel.h"
+
+#include <ModelAPI_Data.h>
+#include <ModelAPI_Session.h>
+#include <ModelAPI_Document.h>
+#include <ModelAPI_Tools.h>
+
+#include <ModuleBase_Tools.h>
+
+#include <XGUI_Workshop.h>
+
+#include <QLayout>
+#include <QLineEdit>
+#include <QPixmap>
+#include <QEvent>
+#include <QMouseEvent>
+#include <QAction>
+#include <QStyledItemDelegate>
+#include <QMessageBox>
+
+#ifdef DEBUG_INDXES
+#include <QToolTip>
+#endif
 
-XGUI_ObjectsBrowser::XGUI_ObjectsBrowser(QWidget* theParent)
-  : QTreeView(theParent)
+/// Width of second column (minimum acceptable = 27)
+#define FIRST_COL_WIDTH 20
+#define SECOND_COL_WIDTH 30
+
+
+/**
+* \ingroup GUI
+* Tree item delegate for definition of data in column items editor
+*/
+class XGUI_TreeViewItemDelegate: public QStyledItemDelegate
+{
+public:
+  /// Constructor
+  /// \param theParent a parent of the delegate
+  XGUI_TreeViewItemDelegate(XGUI_DataTree* theParent):QStyledItemDelegate(theParent),
+    myTreedView(theParent) {}
+
+  /// Set data for item editor (name of the item)
+  /// \param editor a widget of editor
+  /// \param index the tree item index
+  virtual void	setEditorData ( QWidget* editor, const QModelIndex& index ) const
+  {
+    QLineEdit* aEditor = dynamic_cast<QLineEdit*>(editor);
+    if (aEditor) {
+      XGUI_DataModel* aModel = myTreedView->dataModel();
+      ObjectPtr aObj = aModel->object(index);
+      if (aObj.get() != NULL) {
+        aEditor->setText(aObj->data()->name().c_str());
+        return;
+      }
+    }
+    QStyledItemDelegate::setEditorData(editor, index);
+  }
+
+private:
+  XGUI_DataTree* myTreedView;
+};
+
+
+XGUI_DataTree::XGUI_DataTree(QWidget* theParent)
+    : QTreeView(theParent)
 {
   setHeaderHidden(true);
-  myDocModel = new XGUI_DocumentDataModel(this);
-  setModel(myDocModel);
+  setTreePosition(1);
+  setEditTriggers(QAbstractItemView::NoEditTriggers);
+  setSelectionBehavior(QAbstractItemView::SelectRows);
+  setSelectionMode(QAbstractItemView::ExtendedSelection);
+
+  setItemDelegateForColumn(1, new XGUI_TreeViewItemDelegate(this));
+
+  connect(this, SIGNAL(doubleClicked(const QModelIndex&)),
+    SLOT(onDoubleClick(const QModelIndex&)));
+}
+
+XGUI_DataTree::~XGUI_DataTree()
+{
+}
+
+XGUI_DataModel* XGUI_DataTree::dataModel() const
+{
+  return static_cast<XGUI_DataModel*>(model());
+}
+
+void XGUI_DataTree::contextMenuEvent(QContextMenuEvent* theEvent)
+{
+  emit contextMenuRequested(theEvent);
+}
+
+void XGUI_DataTree::commitData(QWidget* theEditor)
+{
+  static int aEntrance = 0;
+  if (aEntrance == 0) {
+    // We have to check number of enter and exit of this function because it can be called
+    // recursively by Qt in order to avoid double modifying of a data
+    aEntrance = 1;
+    QLineEdit* aEditor = dynamic_cast<QLineEdit*>(theEditor);
+    if (aEditor) {
+      QString aName = aEditor->text();
+      QModelIndexList aIndexList = selectionModel()->selectedIndexes();
+      XGUI_DataModel* aModel = dataModel();
+      ObjectPtr aObj = aModel->object(aIndexList.first());
+
+      if (XGUI_Tools::canRename(aObj, aName)) {
+        SessionPtr aMgr = ModelAPI_Session::get();
+        aMgr->startOperation("Rename");
+        aObj->data()->setName(qPrintable(aName));
+        aMgr->finishOperation();
+      }
+    }
+  }
+  aEntrance = 0;
+}
+
+void XGUI_DataTree::clear()
+{
+  dataModel()->clear();
+  reset();
+}
+
+void XGUI_DataTree::resizeEvent(QResizeEvent* theEvent)
+{
+  QTreeView::resizeEvent(theEvent);
+  QSize aSize = theEvent->size();
+  if (aSize.isValid()) {
+    setColumnWidth(0, FIRST_COL_WIDTH);
+    setColumnWidth(1, aSize.width() - SECOND_COL_WIDTH - FIRST_COL_WIDTH - 10);
+    setColumnWidth(2, SECOND_COL_WIDTH);
+  }
+}
+
+#ifdef DEBUG_INDXES
+void XGUI_DataTree::mousePressEvent(QMouseEvent* theEvent)
+{
+  QTreeView::mousePressEvent(theEvent);
+  if (theEvent->button() != Qt::MidButton)
+    return;
+  QModelIndex aInd = indexAt(theEvent->pos());
+  QString aTxt =
+    QString("r=%1 c=%2 p=%3").arg(aInd.row()).arg(aInd.column()).arg((long)aInd.internalPointer());
+
+  QModelIndex aPar = aInd.parent();
+  QString aTxt1 =
+    QString("r=%1 c=%2 p=%3").arg(aPar.row()).arg(aPar.column()).arg((long)aPar.internalPointer());
+  QToolTip::showText(theEvent->globalPos(), aTxt + '\n' + aTxt1);
+}
+#endif
 
-  connect(selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)), 
-    this, SLOT(onSelectionChanged(const QItemSelection&, const QItemSelection&)));
+void XGUI_DataTree::mouseReleaseEvent(QMouseEvent* theEvent)
+{
+  QTreeView::mouseReleaseEvent(theEvent);
+#ifdef DEBUG_INDXES
+  if (theEvent->button() != Qt::MidButton)
+    return;
+  QToolTip::hideText();
+#endif
+  if (theEvent->button() == Qt::LeftButton) {
+    QModelIndex aInd = indexAt(theEvent->pos());
+    if (aInd.column() == 0)
+      processEyeClick(aInd);
+  }
 }
 
+void XGUI_DataTree::processHistoryChange(const QModelIndex& theIndex)
+{
+  SessionPtr aMgr = ModelAPI_Session::get();
+  // When operation is opened then we can not change history
+  if (aMgr->isOperation())
+    return;
+  XGUI_DataModel* aModel = dataModel();
+  if (aModel->flags(theIndex) == 0)
+    return;
+  ObjectPtr aObj = aModel->object(theIndex);
+
+  DocumentPtr aDoc = aMgr->activeDocument();
+
+  std::string aOpName = tr("History change").toStdString();
+  if (aObj.get()) {
+    if (aObj->document() != aDoc)
+      return;
+    aMgr->startOperation(aOpName);
+    aDoc->setCurrentFeature(std::dynamic_pointer_cast<ModelAPI_Feature>(aObj), true);
+    aMgr->finishOperation();
+  } else {
+    // Ignore clicks on folders outside current document
+    if ((theIndex.internalId() == 0) && (aDoc != aMgr->moduleDocument()))
+      // Clicked folder under root but active document is another
+      return;
+    if ((theIndex.internalId() != 0) && (aDoc.get() != theIndex.internalPointer()))
+      // Cliced not on active document folder
+      return;
 
+    aMgr->startOperation(aOpName);
+    aDoc->setCurrentFeature(FeaturePtr(), true);
+    aMgr->finishOperation();
+  }
+  QModelIndex aNewIndex = aModel->lastHistoryIndex();
+  QModelIndex aParent = theIndex.parent();
+  int aSize = aModel->rowCount(aParent);
+  for (int i = 0; i < aSize; i++) {
+    update(aModel->index(i, 0, aParent));
+    update(aModel->index(i, 1, aParent));
+    update(aModel->index(i, 2, aParent));
+  }
+}
+
+void XGUI_DataTree::processEyeClick(const QModelIndex& theIndex)
+{
+  XGUI_DataModel* aModel = dataModel();
+  ObjectPtr aObj = aModel->object(theIndex);
+  if (aObj.get()) {
+    ResultPtr aResObj = std::dynamic_pointer_cast<ModelAPI_Result>(aObj);
+    XGUI_ObjectsBrowser* aObjBrowser = qobject_cast<XGUI_ObjectsBrowser*>(parent());
+    if (aResObj.get()) {
+      std::set<ObjectPtr> anObjects;
+      anObjects.insert(aResObj);
+      if (aObjBrowser && !aResObj->isDisplayed() &&
+          !aObjBrowser->workshop()->prepareForDisplay(anObjects))
+        return;
+      aResObj->setDisplayed(!aResObj->isDisplayed());
+      Events_Loop::loop()->flush(Events_Loop::eventByName(EVENT_OBJECT_TO_REDISPLAY));
+      update(theIndex);
+    }
+    // Update list of selected objects because this event happens after
+    // selection event in object browser
+    if (aObjBrowser) {
+      aObjBrowser->onSelectionChanged();
+    }
+  }
+}
+
+void XGUI_DataTree::onDoubleClick(const QModelIndex& theIndex)
+{
+  switch (theIndex.column()) {
+  case 2:
+    processHistoryChange(theIndex);
+    break;
+  }
+}
+
+
+//********************************************************************
+//********************************************************************
+//********************************************************************
+XGUI_ActiveDocLbl::XGUI_ActiveDocLbl(const QString& theText, QWidget* theParent )
+  : QLabel(theText, theParent),
+  myPreSelectionStyle(""),
+  myNeutralStyle(""),
+  mySelectionStyle(""),
+  myIsSelected(false)
+{
+}
+
+void XGUI_ActiveDocLbl::setTreeView(QTreeView* theView)
+{
+  myTreeView = theView;
+  setFont(myTreeView->font());
+
+  QPalette aPalet = myTreeView->palette();
+  QColor aHighlight = aPalet.highlight().color();
+  QColor aHighlightText = aPalet.highlightedText().color();
+
+  myPreSelectionStyle = "QLabel {background-color: ";
+  myPreSelectionStyle += aHighlight.lighter(170).name() + "}";
+  //myPreSelectionStyle += "qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 white, stop:1 " +
+  //  aHighlight.lighter(170).name() + ");";
+  //myPreSelectionStyle += "border: 1px solid lightblue; border-radius: 2px }";
+
+  QString aName = aPalet.color(QPalette::Base).name();
+  myNeutralStyle = "QLabel { border: 1px solid " + aName + " }";
+
+
+#if (!defined HAVE_SALOME) && (defined WIN32)
+  mySelectionStyle = "QLabel {background-color: ";
+  mySelectionStyle += "rgb(205, 232, 255); ";
+  //mySelectionStyle += "qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgb(236, 245, 255)";
+  //mySelectionStyle += ", stop:1 rgb(208, 229, 255));";
+  //mySelectionStyle += "border: 1px solid rgb(132, 172, 221); border-radius: 2px }";
+  mySelectionStyle += "border: 1px solid rgb(153, 209, 255) }";
+#else
+  mySelectionStyle = "QLabel {background-color: " + aHighlight.name();
+  mySelectionStyle += "; color : " + aHighlightText.name() + "}";
+#endif
+
+  myTreeView->viewport()->installEventFilter(this);
+}
+
+
+#if (!defined HAVE_SALOME) && (defined WIN32)
+bool XGUI_ActiveDocLbl::event(QEvent* theEvent)
+{
+  switch (theEvent->type()) {
+    case QEvent::Enter:
+      if (!myIsSelected)
+        setStyleSheet(myPreSelectionStyle);
+      break;
+    case QEvent::Leave:
+      if (!myIsSelected)
+        setStyleSheet(myNeutralStyle);
+      break;
+  }
+  return QLabel::event(theEvent);
+}
+#endif
+
+bool XGUI_ActiveDocLbl::eventFilter(QObject* theObj, QEvent* theEvent)
+{
+  if (theObj == myTreeView->viewport()) {
+    if (theEvent->type() == QEvent::MouseButtonRelease)
+      unselect();
+  }
+  return QLabel::eventFilter(theObj, theEvent);
+}
+
+static bool MYClearing = false;
+void XGUI_ActiveDocLbl::mouseReleaseEvent( QMouseEvent* e)
+{
+  MYClearing = true;
+  myIsSelected = true;
+  setStyleSheet(mySelectionStyle);
+  // We can not block signals because on
+  // clear selection the View state will not be updated
+  myTreeView->clearSelection();
+  QLabel::mouseReleaseEvent(e);
+  MYClearing = false;
+}
+
+void XGUI_ActiveDocLbl::unselect()
+{
+  if (!MYClearing) {
+    myIsSelected = false;
+    setStyleSheet(myNeutralStyle);
+  }
+}
+
+
+//********************************************************************
+//********************************************************************
+//********************************************************************
+XGUI_ObjectsBrowser::XGUI_ObjectsBrowser(QWidget* theParent, XGUI_Workshop* theWorkshop)
+    : QWidget(theParent), myDocModel(0), myWorkshop(theWorkshop)
+{
+  QVBoxLayout* aLayout = new QVBoxLayout(this);
+  ModuleBase_Tools::zeroMargins(aLayout);
+  aLayout->setSpacing(0);
+
+  QWidget* aLabelWgt = new QWidget(this);
+  aLabelWgt->setAutoFillBackground(true);
+
+  aLayout->addWidget(aLabelWgt);
+  QHBoxLayout* aLabelLay = new QHBoxLayout(aLabelWgt);
+  ModuleBase_Tools::zeroMargins(aLabelLay);
+  aLabelLay->setSpacing(0);
+
+  QLabel* aLbl = new QLabel(aLabelWgt);
+  aLbl->setPixmap(QPixmap(":pictures/assembly.png"));
+  aLbl->setMargin(2);
+  // Do not paint background of the label (in order to show icon)
+  aLbl->setAutoFillBackground(false);
+
+  aLabelLay->addWidget(aLbl);
+
+  SessionPtr aMgr = ModelAPI_Session::get();
+  DocumentPtr aDoc = aMgr->moduleDocument();
+
+  myActiveDocLbl = new XGUI_ActiveDocLbl(tr("Part set"), aLabelWgt);
+//  myActiveDocLbl->setReadOnly(true);
+//  myActiveDocLbl->setFrame(false);
+  myActiveDocLbl->setContextMenuPolicy(Qt::CustomContextMenu);
+
+  aLabelLay->addWidget(myActiveDocLbl);
+  aLabelLay->setStretch(1, 1);
+
+  myTreeView = new XGUI_DataTree(this);
+  myTreeView->setFrameShape(QFrame::NoFrame);
+  aLayout->addWidget(myTreeView);
+
+  QPalette aTreePalet = myTreeView->palette();
+  QColor aTreeBack = aTreePalet.color(QPalette::Base);
+
+  QPalette aPalet;
+  aPalet.setColor(QPalette::Base, aTreeBack);
+  aPalet.setColor(QPalette::Window, aTreeBack);
+  aLabelWgt->setPalette(aPalet);
+
+  myDocModel = new XGUI_DataModel(this);
+  connect(myDocModel, SIGNAL(modelAboutToBeReset()), SLOT(onBeforeReset()));
+  connect(myDocModel, SIGNAL(treeRebuilt()), SLOT(onAfterModelReset()));
+
+  connect(myTreeView, SIGNAL(contextMenuRequested(QContextMenuEvent*)), this,
+          SLOT(onContextMenuRequested(QContextMenuEvent*)));
+}
+
+//***************************************************
 XGUI_ObjectsBrowser::~XGUI_ObjectsBrowser()
 {
 }
 
+void XGUI_ObjectsBrowser::setXMLReader(Config_DataModelReader* theReader)
+{
+  myDocModel->setXMLReader(theReader);
+  myTreeView->setModel(myDocModel);
+
+  // It has to be done after setting of model
+  myActiveDocLbl->setTreeView(myTreeView);
+
+  QItemSelectionModel* aSelMod = myTreeView->selectionModel();
+  connect(aSelMod, SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
+          this, SLOT(onSelectionChanged(const QItemSelection&, const QItemSelection&)));
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::onContextMenuRequested(QContextMenuEvent* theEvent)
+{
+  QModelIndexList aIndexes;
+  QObjectPtrList aSelectedData = selectedObjects(&aIndexes);
+  bool toEnable = false;
+
+  if (aSelectedData.size() == 1) {
+    QModelIndex aSelected = myTreeView->indexAt(theEvent->pos());
+    if (!aIndexes.contains(aSelected))
+      return; // menu is called on non selected item
+
+    Qt::ItemFlags aFlags = dataModel()->flags(aIndexes.first());
+    toEnable = ((aFlags & Qt::ItemIsEditable) != 0);
+  }
+  foreach(QAction* aCmd, actions()) {
+    aCmd->setEnabled(toEnable);
+  }
+  emit contextMenuRequested(theEvent);
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::onLabelContextMenuRequested(const QPoint& thePnt)
+{
+  myTreeView->selectionModel()->clearSelection();
+  //Empty feature pointer means that selected root document
+  foreach(QAction* aCmd, actions()) {
+    aCmd->setEnabled(true);
+  }
+  QContextMenuEvent aEvent(QContextMenuEvent::Mouse, thePnt, myActiveDocLbl->mapToGlobal(thePnt));
+  emit contextMenuRequested(&aEvent);
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::onEditItem()
+{
+  QObjectPtrList aSelectedData = selectedObjects();
+  if (aSelectedData.size() > 0) {
+    ObjectPtr anObject = aSelectedData.first();
+    if (anObject.get()) {  // Selection happens in TreeView
+      // check whether the object can be renamed. There should not be parts which are not loaded
+      std::set<FeaturePtr> aFeatures;
+      aFeatures.insert(ModelAPI_Feature::feature(anObject));
+      if (!XGUI_Tools::canRemoveOrRename((QWidget*)parent(), aFeatures))
+        return;
 
+      // Find index which corresponds the feature
+      QModelIndex aIndex;
+      foreach(QModelIndex aIdx, selectedIndexes()) {
+        ObjectPtr aFea = dataModel()->object(aIdx);
+        if (dataModel()->object(aIdx)->isSame(anObject)) {
+          aIndex = aIdx;
+          break;
+        }
+      }
+      if (aIndex.isValid()) {
+        myTreeView->setCurrentIndex(aIndex);
+        myTreeView->edit(aIndex);
+      }
+      return;
+    }
+  }
+}
 
-void XGUI_ObjectsBrowser::onSelectionChanged(const QItemSelection& theSelected, 
-                                             const QItemSelection& theDeselected)
+//***************************************************
+QModelIndexList XGUI_ObjectsBrowser::expandedItems(const QModelIndex& theParent) const
 {
-  mySelectedData.clear();
-  QModelIndexList aIndexes = selectionModel()->selectedIndexes();
+  QModelIndexList aIndexes;
+  QModelIndex aIndex;
+  for (int i = 0; i < myDocModel->rowCount(theParent); i++) {
+    aIndex = myDocModel->index(i, 0, theParent);
+    if (myDocModel->hasChildren(aIndex)) {
+      if (myTreeView->isExpanded(aIndex)) {
+        aIndexes.append(aIndex);
+        QModelIndexList aSubIndexes = expandedItems(aIndex);
+        if (!aSubIndexes.isEmpty())
+          aIndexes.append(aSubIndexes);
+      }
+    }
+  }
+  return aIndexes;
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::rebuildDataTree()
+{
+  myDocModel->rebuildDataTree();
+  update();
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::setObjectsSelected(const QObjectPtrList& theObjects)
+{
+  QList<QModelIndex> theIndexes;
+  QItemSelectionModel* aSelectModel = myTreeView->selectionModel();
+  aSelectModel->clear();
+
+  foreach(ObjectPtr aFeature, theObjects)
+  {
+    QModelIndex aIndex = myDocModel->objectIndex(aFeature);
+    if (aIndex.isValid()) {
+      aSelectModel->select(aIndex, QItemSelectionModel::Select);
+    }
+  }
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::clearContent()
+{
+  myTreeView->clear();
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::onSelectionChanged(const QItemSelection& theSelected,
+                                       const QItemSelection& theDeselected)
+{
+  onSelectionChanged();
+}
+
+//***************************************************
+void XGUI_ObjectsBrowser::onSelectionChanged()
+{
+  emit selectionChanged();
+}
+
+//***************************************************
+QObjectPtrList XGUI_ObjectsBrowser::selectedObjects(QModelIndexList* theIndexes) const
+{
+  QObjectPtrList aList;
+  QModelIndexList aIndexes = selectedIndexes();
+  XGUI_DataModel* aModel = dataModel();
   QModelIndexList::const_iterator aIt;
   for (aIt = aIndexes.constBegin(); aIt != aIndexes.constEnd(); ++aIt) {
-    FeaturePtr aFeature = myDocModel->feature(*aIt);
-    if (aFeature)
-      mySelectedData.append(aFeature);
+    if ((*aIt).column() == 1) {
+      ObjectPtr aObject = aModel->object(*aIt);
+      if (aObject) {
+        aList.append(aObject);
+        if (theIndexes)
+          theIndexes->append(*aIt);
+      }
+    }
+  }
+  return aList;
+}
+
+void XGUI_ObjectsBrowser::onBeforeReset()
+{
+  myExpandedItems = expandedItems();
+}
+
+void XGUI_ObjectsBrowser::onAfterModelReset()
+{
+  foreach(QModelIndex aIndex, myExpandedItems) {
+    myTreeView->setExpanded(aIndex, true);
   }
-  emit selectionChanged();
 }
 
-void XGUI_ObjectsBrowser::mouseDoubleClickEvent(QMouseEvent* theEvent)
+std::list<bool> XGUI_ObjectsBrowser::getStateForDoc(DocumentPtr theDoc) const
 {
-  QModelIndex aIndex = currentIndex();
-  bool isChanged = myDocModel->activatedIndex(aIndex);
-  QTreeView::mouseDoubleClickEvent(theEvent);
-  if (isChanged) {
-    setExpanded(aIndex.parent(), true);
-    setExpanded(aIndex, myDocModel->hasChildren(aIndex));
-    emit activePartChanged(myDocModel->activePart());
+  std::list<bool> aStates;
+  XGUI_DataModel* aModel = dataModel();
+  QModelIndex aRootIdx = aModel->documentRootIndex(theDoc);
+  int aNbChild = aModel->rowCount(aRootIdx);
+  for (int i = 0; i < aNbChild; i++) {
+    QModelIndex aIdx = aModel->index(i, 1, aRootIdx);
+    aStates.push_back(myTreeView->isExpanded(aIdx));
   }
-}
\ No newline at end of file
+  return aStates;
+}
+
+void XGUI_ObjectsBrowser::setStateForDoc(DocumentPtr theDoc, const std::list<bool>& theStates)
+{
+  if (theStates.size() == 0)
+    return;
+  XGUI_DataModel* aModel = dataModel();
+  QModelIndex aRootIdx = aModel->documentRootIndex(theDoc);
+  int aNbChild = aModel->rowCount(aRootIdx);
+
+  std::list<bool>::const_iterator aIt;
+  int i = 0;
+  for (aIt = theStates.cbegin(); aIt != theStates.cend(); aIt++, i++) {
+    if (i >= aNbChild )
+      break;
+    QModelIndex aIdx = aModel->index(i, 0, aRootIdx);
+    myTreeView->setExpanded(aIdx, (*aIt));
+  }
+}
+
+void XGUI_ObjectsBrowser::updateAllIndexes(int theColumn, const QModelIndex& theParent)
+{
+  int aNb = myDocModel->rowCount(theParent);
+  for (int i = 0; i < aNb; i++) {
+    QModelIndex aIdx = myDocModel->index(i, theColumn, theParent);
+    if (aIdx.isValid()) {
+      myTreeView->update(aIdx);
+      updateAllIndexes(theColumn, aIdx);
+    }
+  }
+}