- if (myPRedo->init(theType, theIntParam1, theIntParam2, theIntParam3)) {
- }
-
- if (!isOK) {
- clear();
- }
- }
-
- return isOK;
-}
-
-//=======================================================================
-// function: init
-// purpose:
-//=======================================================================
-bool CurveCreator_Diff::init(const CurveCreator_Curve *theCurve,
- const CurveCreator_Operation::Type theType,
- const CurveCreator::Coordinates &theCoords,
- const int theIntParam)
-{
- bool isOK = false;
-
- if (theCurve != NULL) {
- clear();
-
- // Set redo.
- myPRedo = new CurveCreator_Operation;
+ if (myPRedo->init(theType, theParams)) {
+ // Construct undo for different commands.
+ switch (theType) {
+ case CurveCreator_Operation::Join:
+ {
+ int aSectionMain = theParams.front();
+ const int aNbPointsMain = theCurve->getNbPoints(aSectionMain);
+
+ std::list<int> aSectionsToJoin = theParams;
+ aSectionsToJoin.erase( aSectionsToJoin.begin() );
+ // it is important to sort the section indices in order to correct perform undo
+ // for the move sections to the previous positions
+ aSectionsToJoin.sort();
+ // 1rst undo for remove points from the main and n-1 undoes to contain joined sections
+ int aSectionsToJoinNb = aSectionsToJoin.size();
+ int aNbUndos = 2*aSectionsToJoinNb + 1;
+ setNbUndos( aNbUndos );
+
+ // Add joined sections to undo
+ std::list<int>::const_iterator anIt = aSectionsToJoin.begin(),
+ aLast = aSectionsToJoin.end();
+ anIt = aSectionsToJoin.begin();
+ int aLastSectionId = -1;
+ for (int i = 0; anIt != aLast && i < aSectionsToJoinNb; anIt++, i++) {
+ int anISection = *anIt;
+ isOK = addSectionToUndo( theCurve, anISection, myPUndo[i*2] );
+ if (isOK) {
+ isOK = myPUndo[i*2+1].init(CurveCreator_Operation::MoveSection,
+ aLastSectionId, anISection);
+ if (!isOK)
+ break;
+ }
+ }
+ // Construct undo for RemovePoints command.
+ if (isOK) {
+ int aNbPointsInJoined = 0;
+ anIt = aSectionsToJoin.begin();
+ for ( ; anIt != aLast; anIt++ )
+ aNbPointsInJoined += theCurve->getNbPoints( *anIt );