SharedCaretState TextFormulaNode::GetNextPosition(SharedCaretState& relativeState)
{
if (relativeState && relativeState->CheckInNode(this))
{
int pos = relativeState->GetPos();
if (pos < GetText().length())
return SharedCaretState(new CaretState(this, pos + 1));
return parent->GetNextPosition(relativeState);
}
return GetFirstPosition();
}
SharedCaretState CompoundFormulaNode::GetNextPosition(SharedCaretState& relativeState)
{
SharedCaretState res;
if (!relativeState)
res = SharedCaretState(new CaretState(parent, parent->GetChildPos(this)));
else
{
if (relativeState->CheckOnNode(this))
res = GetFirstPosition();
else if (relativeState->CheckInNode(this))
{
int i;
FormulaNode* n;
FormulaNode* node = relativeState->GetNode();
if (node == this)
{
i = relativeState->GetPos();
n = (*this)[i == childNodes->Count() ? i - 1 : i];
res = n->GetNextPosition(relativeState);
if (res)
return res;
}
else
i = GetFirstLevelChildPos(node);
if (i + 1 < childNodes->Count())
{
n = (*this)[i + 1];
res = n->GetNextPosition();
while (!res && !n->CanSetCaret())
{
++i;
n = (*this)[i + 1];
res = n->GetNextPosition();
}
if (!res && n->CanSetCaret())
res = SharedCaretState(new CaretState(this, i + 1));
}
if (!res && parent)
res = parent->GetNextPosition(relativeState);
}
else if (relativeState->CheckAtLast(this))
res = parent->GetNextPosition(relativeState);
else
res = SharedCaretState(new CaretState(parent, parent->GetChildPos(this)));
}
return res;
}
bool CHttpRanges::GetTotalRange(CHttpRange& range) const
{
if (m_ranges.empty())
return false;
uint64_t firstPosition, lastPosition;
if (!GetFirstPosition(firstPosition) || !GetLastPosition(lastPosition))
return false;
range.SetFirstPosition(firstPosition);
range.SetLastPosition(lastPosition);
return range.IsValid();
}
SharedCaretState RootFormulaNode::GetNextPosition(SharedCaretState& relativeState)
{
SharedCaretState res;
if (!relativeState)
res = GetFirstPosition();
else
{
int i = -1;
FormulaNode* node = relativeState->GetNode();
if (!relativeState->CheckAtLast(this))
{
if (node == this)
{
i = relativeState->GetPos();
FormulaNode* n = (*this)[i == childNodes->Count() ? i - 1 : i];
res = n->GetNextPosition(relativeState);
if (res)
return res;
if (i == childNodes->Count() - 1 && !dynamic_cast<EmptyFormulaNode*>(n))
return SharedCaretState(new CaretState(this, i + 1));
}
else
i = GetFirstLevelChildPos(node);
}
else if (node == this && parent)
res = parent->GetNextPosition(relativeState);
else
i = GetFirstLevelChildPos(node);
if (i != -1)
{
if (i + 1 < childNodes->Count())
{
FormulaNode* n = (*this)[i + 1];
res = n->GetNextPosition(relativeState);
if (!res && n->CanSetCaret())
res = SharedCaretState(new CaretState(this, i + 1));
}
else if (!IsEmptySymbol() && i == childNodes->Count() - 1 && *relativeState != *GetLastPosition())
return SharedCaretState(new CaretState(this, i + 1));
}
if (!res && parent)
return parent->GetNextPosition(relativeState);
}
return res;
}
