src/XGUI/XGUI_OperationMgr.cpp

   1 #include "XGUI_OperationMgr.h"
   2
   3 #include "ModuleBase_Operation.h"
   4
   5 #include <QMessageBox>
   6
   7 XGUI_OperationMgr::XGUI_OperationMgr(QObject* theParent)
   8 : QObject(theParent)
   9 {
  10 }
  11
  12 XGUI_OperationMgr::~XGUI_OperationMgr()
  13 {
  14 }
  15
  16 ModuleBase_Operation* XGUI_OperationMgr::currentOperation() const
  17 {
  18   return myOperations.count() > 0 ? myOperations.last() : 0;
  19 }
  20
  21 bool XGUI_OperationMgr::startOperation(ModuleBase_Operation* theOperation)
  22 {
  23   if (!canStartOperation(theOperation))
  24     return false;
  25
  26   myOperations.append(theOperation);
  27
  28   connect(theOperation, SIGNAL(stopped()), this, SLOT(onOperationStopped()));
  29   connect(theOperation, SIGNAL(started()), this, SIGNAL(operationStarted()));
  30
  31   theOperation->start();
  32   return true;
  33 }
  34
  35 bool XGUI_OperationMgr::canStartOperation(ModuleBase_Operation* theOperation)
  36 {
  37   bool aCanStart = true;
  38   ModuleBase_Operation* aCurrentOp = currentOperation();
  39   if (aCurrentOp && !theOperation->isGranted())
  40   {
  41     int anAnswer = QMessageBox::question(0, tr("Operation launch"),
  42                                 tr("Previous operation is not finished and will be aborted"),
  43                                 QMessageBox::Ok, QMessageBox::Cancel);
  44     if (anAnswer == QMessageBox::Ok)
  45       aCurrentOp->abort();
  46     else
  47       aCanStart = false;
  48   }
  49   return aCanStart;
  50 }
  51
  52 void XGUI_OperationMgr::commitCurrentOperation()
  53 {
  54   ModuleBase_Operation* anOperation = currentOperation();
  55   if (!anOperation)
  56     return;
  57
  58   anOperation->commit();
  59 }
  60
  61 void XGUI_OperationMgr::onOperationStopped()
  62 {
  63   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
  64   ModuleBase_Operation* anOperation = currentOperation();
  65   if (!aSenderOperation || !anOperation || aSenderOperation != anOperation )
  66     return;
  67
  68   emit operationStopped(anOperation);
  69
  70   myOperations.removeAll(anOperation);
  71   anOperation->deleteLater();
  72
  73   // get last operation which can be resumed
  74   ModuleBase_Operation* aResultOp = 0;
  75   QListIterator<ModuleBase_Operation*> anIt(myOperations);
  76   anIt.toBack();
  77   while(anIt.hasPrevious())
  78   {
  79     ModuleBase_Operation* anOp = anIt.previous();
  80     if (anOp) {
  81       aResultOp = anOp;
  82       break;
  83     }
  84   }
  85   if (aResultOp)
  86     startOperation(aResultOp);
  87 }