Walls And Holes  1
emptyparentcommand.h
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1 #ifndef EMPTYPARENTCOMMAND_H
2 #define EMPTYPARENTCOMMAND_H
3 
4 #include <QUndoCommand>
5 
12 class EmptyParentCommand : public QUndoCommand
13 {
14 public:
15 
22  static EmptyParentCommand *make(const QString &text, QUndoCommand *parent = nullptr);
23 
24 
25  void redo() override;
26  void undo() override;
27 
28 private:
29 
30  bool checkIfChildrenObsolete() const;
31 
32  EmptyParentCommand(const QString &text, QUndoCommand *parent);
33 };
34 
35 #endif // EMPTYPARENTCOMMAND_H
EmptyParentCommand::make
static EmptyParentCommand * make(const QString &text, QUndoCommand *parent=nullptr)
make Makes an empty parent command with the given text.
Definition: emptyparentcommand.cpp:3
EmptyParentCommand
The EmptyParentCommand class works almost exactly like the default QUndoCommand implementation, except that it sets itself obsolete if all of its children are obsolete. This way, command macros that do nothing will get removed.
Definition: emptyparentcommand.h:12
EmptyParentCommand::redo
void redo() override
Definition: emptyparentcommand.cpp:9
EmptyParentCommand::undo
void undo() override
Definition: emptyparentcommand.cpp:18