refs #550: fix crash when myObject is NULL

[modules/hydro.git] / src / HYDROGUI / HYDROGUI_Wizard.cxx

diff --git a/src/HYDROGUI/HYDROGUI_Wizard.cxx b/src/HYDROGUI/HYDROGUI_Wizard.cxx
index 8acc5641fbba099e2ad46ea6f6bf95fa790e7e47..fd393ae53870eab2bcc655a17e83c4ed76a3e878 100644 (file)
--- a/src/HYDROGUI/HYDROGUI_Wizard.cxx
+++ b/src/HYDROGUI/HYDROGUI_Wizard.cxx
@@ -1,12 +1,8 @@
-// Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
-//
-// Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
-// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
-//
+// Copyright (C) 2014-2015  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.
+// 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
@@ -81,28 +77,30 @@ int HYDROGUI_Wizard::addPage( QWizardPage* thePage )
 
 void HYDROGUI_Wizard::onNext()
 {
-  if ( myWizard->count() > 0 )
+  if ( !acceptCurrent() )
+    return;
+
+  if ( myWizard->count() <= 0 )
+    return;
+
+  myBack->setEnabled( true );
+  int aCurIdx = myWizard->currentIndex();
+  if ( aCurIdx == ( myWizard->count() - 2 ) )
   {
-    myBack->setEnabled( true );
-    int aCurIdx = myWizard->currentIndex();
-    if ( aCurIdx == ( myWizard->count() - 2 ) )
-    {
-      // Go to the last page
-      myNext->setVisible( false );
-      myFinish->setVisible( true );
-    }
-    myWizard->setCurrentIndex( aCurIdx + 1 );
+    // Go to the last page
+    myNext->setVisible( false );
+    myFinish->setVisible( true );
   }
+  myWizard->setCurrentIndex( aCurIdx + 1 );
+
+  emit Next( myWizard->currentIndex() );
 }
 
 void HYDROGUI_Wizard::onBack()
 {
-  int aCurIdx = myWizard->currentIndex();
-  if ( aCurIdx <= 1 )
-  {
-    // Disable back if go to the first page
-    myBack->setEnabled( false );
-  }
+  if ( myWizard->count() <= 0 )
+    return;
+
   if ( myWizard->count() > 1 )
   {
     myNext->setVisible( true );
@@ -114,7 +112,34 @@ void HYDROGUI_Wizard::onBack()
     myNext->setVisible( false );
     myFinish->setVisible( true );
   }
+
+  int aCurIdx = myWizard->currentIndex();
   myWizard->setCurrentIndex( aCurIdx - 1 );
+
+  aCurIdx = myWizard->currentIndex();
+  if ( aCurIdx <= 0 )
+  {
+    // Disable back if go to the first page
+    myBack->setEnabled( false );
+  }
+
+  emit Back( aCurIdx );
+}
+
+void HYDROGUI_Wizard::onFirstPage()
+{
+  if ( myWizard->count() > 1 ) {
+    myNext->setVisible( true );
+    myFinish->setVisible( false );
+    myWizard->setCurrentIndex( 0 );
+    myBack->setEnabled( false );
+    emit Back( myWizard->currentIndex() );
+  }
+}
+
+bool HYDROGUI_Wizard::acceptCurrent() const
+{
+  return true;
 }
 
 QAbstractButton* HYDROGUI_Wizard::button( QWizard::WizardButton theBtnId ) const