bool px_ChangeHistory::didRedo(void)
{
xxx_UT_DEBUGMSG((" Doing didRedo void in PT undopos %d savePos pos %d iAdjustOffset %d \n",m_undoPosition,m_savePosition,m_iAdjustOffset));
if (m_bOverlap)
{
clearHistory();
return false;
}
if ((m_undoPosition - m_iAdjustOffset) >= m_vecChangeRecords.getItemCount())
return false;
PX_ChangeRecord * pcr = m_vecChangeRecords.getNthItem(m_undoPosition - m_iAdjustOffset);
// leave records from external documents in place so we can correct
if (pcr && !pcr->isFromThisDoc() && (m_iAdjustOffset == 0))
return false;
if (m_iAdjustOffset > 0)
{
m_iAdjustOffset--;
xxx_UT_DEBUGMSG(("AdjustOffset decremented -3 redo %d ", m_iAdjustOffset));
}
else
{
xxx_UT_DEBUGMSG(("Undo Position incremented in redo \n"));
m_undoPosition++;
}
if (pcr && !pcr->getPersistance())
m_savePosition++;
return true;
}
bool px_ChangeHistory::didUndo(void)
{
xxx_UT_DEBUGMSG((" Doing Undo void in PT undopos %d savePos pos %d \n",m_undoPosition,m_savePosition));
if (m_bOverlap)
{
clearHistory();
return false;
}
UT_return_val_if_fail(m_undoPosition > 0, false);
UT_return_val_if_fail(m_undoPosition - m_iAdjustOffset > m_iMinUndo, false);
PX_ChangeRecord * pcr = m_vecChangeRecords.getNthItem(m_undoPosition-m_iAdjustOffset-1);
UT_return_val_if_fail(pcr && pcr->isFromThisDoc(), false);
if (m_iAdjustOffset == 0)
m_undoPosition--;
pcr = m_vecChangeRecords.getNthItem(m_undoPosition-m_iAdjustOffset);
if (pcr && !pcr->getPersistance())
{
UT_return_val_if_fail(m_savePosition > 0,false);
m_savePosition--;
}
return true;
}