src/XGUI/XGUI_OperationMgr.cpp

   1 // File:        XGUI_OperationMgr.h
   2 // Created:     20 Apr 2014
   3 // Author:      Natalia ERMOLAEVA
   4
   5 #include "XGUI_OperationMgr.h"
   6
   7 #include "ModuleBase_Operation.h"
   8 #include <ModelAPI_Validator.h>
   9 #include <ModelAPI_FeatureValidator.h>
  10
  11 #include <QMessageBox>
  12 #include <QApplication>
  13 #include <QKeyEvent>
  14
  15 XGUI_OperationMgr::XGUI_OperationMgr(QObject* theParent)
  16     : QObject(theParent)
  17 {
  18   // listen to Escape signal to stop the current operation
  19   qApp->installEventFilter(this);
  20 }
  21
  22 XGUI_OperationMgr::~XGUI_OperationMgr()
  23 {
  24 }
  25
  26 ModuleBase_Operation* XGUI_OperationMgr::currentOperation() const
  27 {
  28   return myOperations.count() > 0 ? myOperations.last() : 0;
  29 }
  30
  31 bool XGUI_OperationMgr::hasOperation() const
  32 {
  33   return (myOperations.count() > 0) && (myOperations.last() != NULL);
  34 }
  35
  36 int XGUI_OperationMgr::operationsCount() const
  37 {
  38   return myOperations.count();
  39 }
  40
  41 bool XGUI_OperationMgr::startOperation(ModuleBase_Operation* theOperation)
  42 {
  43   if (!canStartOperation(theOperation))
  44     return false;
  45
  46   myOperations.append(theOperation);
  47
  48   connect(theOperation, SIGNAL(stopped()), this, SLOT(onOperationStopped()));
  49   connect(theOperation, SIGNAL(started()), this, SIGNAL(operationStarted()));
  50   connect(theOperation, SIGNAL(resumed()), this, SIGNAL(operationResumed()));
  51   connect(theOperation, SIGNAL(activateNextWidget(ModuleBase_ModelWidget*)), this,
  52           SIGNAL(activateNextWidget(ModuleBase_ModelWidget*)));
  53
  54   theOperation->start();
  55   validateCurrentOperation();
  56   return true;
  57 }
  58
  59 bool XGUI_OperationMgr::abortOperation()
  60 {
  61   ModuleBase_Operation* aCurrentOp = currentOperation();
  62   if (!aCurrentOp || !canStopOperation())
  63     return false;
  64
  65   aCurrentOp->abort();
  66   return true;
  67 }
  68
  69 QStringList XGUI_OperationMgr::operationList()
  70 {
  71   QStringList result;
  72   foreach(ModuleBase_Operation* eachOperation, myOperations)
  73   {
  74     result << eachOperation->id();
  75   }
  76   return result;
  77 }
  78
  79 void XGUI_OperationMgr::validateOperation(ModuleBase_Operation* theOperation)
  80 {
  81   //Get operation Id and feature to validate
  82   QString anOperationId = theOperation->id();
  83   FeaturePtr aFeature = theOperation->feature();
  84   //Get validators for the Id
  85   SessionPtr aMgr = ModelAPI_Session::get();
  86   ModelAPI_ValidatorsFactory* aFactory = aMgr->validators();
  87
  88   bool isValid = aFactory->validate(aFeature);
  89   emit operationValidated(isValid);
  90 }
  91
  92 void XGUI_OperationMgr::validateCurrentOperation()
  93 {
  94   if (!hasOperation())
  95     return;
  96   ModuleBase_Operation* anOperation = currentOperation();
  97   validateOperation(currentOperation());
  98 }
  99
 100 bool XGUI_OperationMgr::eventFilter(QObject *theObject, QEvent *theEvent)
 101 {
 102   if (theEvent->type() == QEvent::KeyRelease) {
 103     QKeyEvent* aKeyEvent = (QKeyEvent*) theEvent;
 104     if (aKeyEvent && aKeyEvent->key() == Qt::Key_Escape) {
 105       // TODO: this is Escape button processing when the property panel has empty content,
 106       // but the operation should be stopped by the Enter has been clicked
 107       onKeyReleased(aKeyEvent);
 108       return true;
 109     }
 110   }
 111   return QObject::eventFilter(theObject, theEvent);
 112 }
 113
 114 void XGUI_OperationMgr::resumeOperation(ModuleBase_Operation* theOperation)
 115 {
 116   theOperation->resume();
 117 }
 118
 119 bool XGUI_OperationMgr::canStartOperation(ModuleBase_Operation* theOperation)
 120 {
 121   bool aCanStart = true;
 122   ModuleBase_Operation* aCurrentOp = currentOperation();
 123   if (aCurrentOp) {
 124     if (!theOperation->isGranted()) {
 125       if (!aCurrentOp->isValid(theOperation)) {
 126         if (canStopOperation()) {
 127           aCurrentOp->abort();
 128         } else {
 129           aCanStart = false;
 130         }
 131       }
 132     }
 133   }
 134   return aCanStart;
 135 }
 136
 137 bool XGUI_OperationMgr::canStopOperation()
 138 {
 139   ModuleBase_Operation* anOperation = currentOperation();
 140   if (anOperation) {
 141     if (anOperation->isModified()) {
 142       int anAnswer = QMessageBox::question(
 143           qApp->activeWindow(), tr("Operation launch"),
 144           tr("Previous operation is not finished and will be aborted"), QMessageBox::Ok,
 145           QMessageBox::Cancel);
 146       return anAnswer == QMessageBox::Ok;
 147     }
 148   }
 149   return true;
 150 }
 151
 152 void XGUI_OperationMgr::onCommitOperation()
 153 {
 154   ModuleBase_Operation* anOperation = currentOperation();
 155   anOperation->onWidgetActivated(NULL);
 156   if (anOperation)
 157     anOperation->commit();
 158 }
 159
 160 void XGUI_OperationMgr::onAbortOperation()
 161 {
 162   ModuleBase_Operation* anOperation = currentOperation();
 163   if (anOperation && canAbortOperation())
 164     anOperation->abort();
 165 }
 166
 167 bool XGUI_OperationMgr::canAbortOperation()
 168 {
 169   ModuleBase_Operation* anOperation = currentOperation();
 170   if (anOperation && anOperation->isModified()) {
 171     int anAnswer = QMessageBox::question(
 172         qApp->activeWindow(), tr("Cancel operation"),
 173         tr("Operation %1 will be cancelled. Continue?").arg(anOperation->id()), QMessageBox::Yes,
 174         QMessageBox::No);
 175     return anAnswer == QMessageBox::Yes;
 176   }
 177   return true;
 178 }
 179
 180 void XGUI_OperationMgr::onOperationStopped()
 181 {
 182   ModuleBase_Operation* aSenderOperation = dynamic_cast<ModuleBase_Operation*>(sender());
 183   ModuleBase_Operation* anOperation = currentOperation();
 184   if (!aSenderOperation || !anOperation || aSenderOperation != anOperation)
 185     return;
 186
 187   myOperations.removeAll(anOperation);
 188   anOperation->deleteLater();
 189
 190   emit operationStopped(anOperation);
 191
 192   // get last operation which can be resumed
 193   ModuleBase_Operation* aResultOp = 0;
 194   QListIterator<ModuleBase_Operation*> anIt(myOperations);
 195   anIt.toBack();
 196   while (anIt.hasPrevious()) {
 197     ModuleBase_Operation* anOp = anIt.previous();
 198     if (anOp) {
 199       aResultOp = anOp;
 200       break;
 201     }
 202   }
 203   if (aResultOp) {
 204     resumeOperation(aResultOp);
 205     validateCurrentOperation();
 206   }
 207 }
 208
 209 void XGUI_OperationMgr::onKeyReleased(QKeyEvent* theEvent)
 210 {
 211   ModuleBase_Operation* anOperation = currentOperation();
 212   if (anOperation)
 213     anOperation->keyReleased(theEvent->key());
 214 }
 215
 216 void XGUI_OperationMgr::onWidgetActivated(ModuleBase_ModelWidget* theWidget)
 217 {
 218   ModuleBase_Operation* anOperation = currentOperation();
 219   if (anOperation)
 220     anOperation->onWidgetActivated(theWidget);
 221 }