/// undo's the given controller change
bool TextUndoStack::redoControllerChange(TextEditorController *controller)
{
Q_ASSERT(controller);
int changeIdx = findRedoIndex( currentIndex(controller), controller);
Change* changeToRedo = findRedoChange( controller );
if( changeToRedo && changeToRedo->controllerContext() ) {
Q_ASSERT( changeToRedo->controllerContext() == controller );
changeToRedo->execute( documentRef_ );
// move the pointer to the next
controllerIndexMap_[controller] = changeIdx+1;
emit redoExecuted( changeToRedo );
}
return false;
}
/// redo a document change
void TextUndoStack::redoDocumentChange()
{
// first find the redo operation
int redoIndex = findRedoIndex( currentIndex(0), 0 );
Change* redo = findRedoChange(0);
if( redo ) { ++redoIndex; }
// first move all controller redo-operation to the given redo found redo location
QMap<TextEditorController*, int>::iterator itr;
for( itr = controllerIndexMap_.begin(); itr != controllerIndexMap_.end(); ++itr) {
TextEditorController* controller = itr.key();
while( redoControllerChange(controller) ) {}; // undo all controller operations
itr.value() = redoIndex; // move the position after the DOC operation
}
// is there a document redo? execute it
if( redo ) {
redo->execute(documentRef_);
setChangeIndex(redoIndex);
emit redoExecuted( redo );
}
}