/****************************************************************************
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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****************************************************************************/

#include "qdesignerundostack.h"

#include <QtGui/QUndoStack>
#include <QtGui/QUndoCommand>

QT_BEGIN_NAMESPACE

namespace qdesigner_internal {

QDesignerUndoStack::QDesignerUndoStack(QObject *parent) :
    QObject(parent),
    m_undoStack(new QUndoStack),
    m_fakeDirty(false)
{
    connect(m_undoStack, SIGNAL(indexChanged(int)), this, SIGNAL(changed()));
}

QDesignerUndoStack::~QDesignerUndoStack()
{ // QUndoStack is managed by the QUndoGroup
}

void QDesignerUndoStack::push(QUndoCommand * cmd)
{
    m_undoStack->push(cmd);
}

void QDesignerUndoStack::beginMacro(const QString &text)
{
    m_undoStack->beginMacro(text);
}

void QDesignerUndoStack::endMacro()
{
    m_undoStack->endMacro();
}

int  QDesignerUndoStack::index() const
{
    return m_undoStack->index();
}

const QUndoStack *QDesignerUndoStack::qundoStack() const
{
    return m_undoStack;
}
QUndoStack *QDesignerUndoStack::qundoStack()
{
    return m_undoStack;
}

bool QDesignerUndoStack::isDirty() const
{
    return m_fakeDirty || !m_undoStack->isClean();
}

void QDesignerUndoStack::setDirty(bool v)
{
    if (isDirty() == v)
        return;
    if (v) {
        m_fakeDirty = true;
        emit changed();
    } else {
        m_fakeDirty = false;
        m_undoStack->setClean();
    }
}

} // namespace qdesigner_internal

QT_END_NAMESPACE