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Add UndoCommand class

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Add a class to handle all undo/redo events. Whenever a user
action affects a dive, an undo command will be created. A list of
these commands will be stored in the UndoBuffer, to allow for
moving forwards/backwards in the list.

Signed-off-by: Grace Karanja <gracie.karanja89@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Grace Karanja 2015-02-09 09:30:27 +01:00 committed by Dirk Hohndel
parent c5138b2090
commit 8d1e4557a9
2 changed files with 31 additions and 0 deletions
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18
qt-ui/undobuffer.cpp
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@ -39,3 +39,21 @@ void UndoBuffer::recordAfter(dive *affectedDive)
{
}
UndoCommand::UndoCommand(QString commandName, dive *affectedDive)
{
name = commandName;
stateBefore = affectedDive;
}
void UndoCommand::undo()
{
}
void UndoCommand::redo()
{
}

13
qt-ui/undobuffer.h
View file

@ -4,6 +4,19 @@
#include <QObject>
#include "dive.h"
class UndoCommand {
private:
dive* stateBefore;
dive* stateAfter;
QString name;
public:
explicit UndoCommand(QString commandName, dive* affectedDive);
void setStateAfter(dive* affectedDive);
void undo();
void redo();
};
class UndoBuffer : public QObject
{
Q_OBJECT