bool WModelIndex::UnorderedLess::operator() (const WModelIndex& i1,
const WModelIndex& i2) const
{
if (!i1.isValid())
return i2.isValid();
else if (!i2.isValid())
return false;
else if (i1 == i2)
return false;
else if (i1.model() != i2.model()) {
LOG_ERROR("comparing indexes from different models are you?");
return false;
} else if (i1.row() < i2.row())
return true;
else if (i1.row() > i2.row())
return false;
else if (i1.column() < i2.column())
return true;
else if (i1.column() > i2.column())
return false;
else
return i1.internalId_ < i2.internalId_;
}
bool WModelIndex::operator< (const WModelIndex& i2) const
{
const WModelIndex& i1 = *this;
if (!i1.isValid())
return i2.isValid();
else if (!i2.isValid())
return false;
else if (i1 == i2)
return false;
else if (i1.model() != i2.model()) {
LOG_ERROR("comparing indexes from different models are you?");
return false;
}
int i1Depth = i1.depth();
int i2Depth = i2.depth();
unsigned e = std::min(i1Depth, i2Depth);
WModelIndex a1 = i1.ancestor(i1Depth - e);
WModelIndex a2 = i2.ancestor(i2Depth - e);
if (a1 == a2)
return i1Depth < i2Depth;
for (unsigned i = e; i > 0; --i) {
WModelIndex p1 = a1.parent();
WModelIndex p2 = a2.parent();
if (p1 == p2) {
if (a1.row() < a2.row())
return true;
else if (a1.row() > a2.row())
return false;
else if (a1.column() < a2.column())
return true;
else
return false;
}
a1 = p1;
a2 = p2;
}
return false; // unreachable code
}
