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QGIM: do nothing in resetParent if model doesn't hold values

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Move the check into the implementation.

Change-Id: I553f4883e9bf7bcccbfc66e009a5f7fc22fb03c5
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
This commit is contained in:
Artem Dyomin 2025-04-02 17:09:52 +02:00 committed by Volker Hilsheimer
parent 7718dcb53c
commit fffe4f32dd
1 changed files with 16 additions and 18 deletions
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34
src/corelib/itemmodels/qgenericitemmodel.h
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@ -812,11 +812,10 @@ public:
} else {
children->insert(pos, count, *generator);
}
if constexpr (!rows_are_raw_pointers) {
// fix the parent in all children of the modified row, as the
// references back to the parent might have become invalid.
that().resetParentInChildren(children);
}
// fix the parent in all children of the modified row, as the
// references back to the parent might have become invalid.
that().resetParentInChildren(children);
endInsertRows();
return true;
@ -857,8 +856,8 @@ public:
}
// fix the parent in all children of the modified row, as the
// references back to the parent might have become invalid.
if constexpr (!rows_are_raw_pointers)
that().resetParentInChildren(children);
that().resetParentInChildren(children);
if constexpr (dynamicColumns()) {
if (callEndRemoveColumns) {
Q_ASSERT(that().columnCount(parent) == 0);
@ -904,8 +903,7 @@ public:
else // moving up
std::rotate(last, first, middle);
if constexpr (!rows_are_raw_pointers)
that().resetParentInChildren(source);
that().resetParentInChildren(source);
endMoveRows();
return true;
@ -1181,7 +1179,9 @@ class QGenericTreeItemModelImpl
Protocol>;
static constexpr bool is_mutable_impl = tree_traits::has_mutable_childRows;
static constexpr bool rows_are_any_refs_or_pointers = Base::rows_are_raw_pointers ||
QGenericItemModelDetails::is_smart_ptr<row_type>() ||
QGenericItemModelDetails::is_any_of<row_type, std::reference_wrapper>();
static_assert(!Base::dynamicColumns(), "A tree must have a static number of columns!");
public:
@ -1256,7 +1256,7 @@ protected:
// We must not insert rows if we cannot adjust the parents of the
// children of the following rows. We don't have to do that if the
// range operates on pointers.
return (Base::rows_are_raw_pointers || tree_traits::has_setParentRow)
return (rows_are_any_refs_or_pointers || tree_traits::has_setParentRow)
&& Base::dynamicRows() && range_features::has_insert;
}
@ -1265,7 +1265,7 @@ protected:
// We must not remove rows if we cannot adjust the parents of the
// children of the following rows. We don't have to do that if the
// range operates on pointers.
return (Base::rows_are_raw_pointers || tree_traits::has_setParentRow)
return (rows_are_any_refs_or_pointers || tree_traits::has_setParentRow)
&& Base::dynamicRows() && range_features::has_erase;
}
@ -1285,7 +1285,7 @@ protected:
// If rows are pointers, then reference to the parent row don't
// change, so we can move them around freely. Otherwise we need to
// be able to explicitly update the parent pointer.
if constexpr (!Base::rows_are_raw_pointers && !tree_traits::has_setParentRow) {
if constexpr (!rows_are_any_refs_or_pointers && !tree_traits::has_setParentRow) {
return false;
} else if constexpr (!(range_features::has_insert && range_features::has_erase)) {
return false;
@ -1349,10 +1349,8 @@ protected:
// ranges, as the references to the entries might have become invalid.
// We don't have to do that if the rows are pointers, as in that case
// the references to the entries are stable.
if constexpr (!Base::rows_are_raw_pointers) {
resetParentInChildren(destination);
resetParentInChildren(source);
}
resetParentInChildren(destination);
resetParentInChildren(source);
this->endMoveRows();
return true;
@ -1388,7 +1386,7 @@ protected:
void resetParentInChildren(range_type *children)
{
if constexpr (tree_traits::has_setParentRow) {
if constexpr (tree_traits::has_setParentRow && !rows_are_any_refs_or_pointers) {
const auto begin = QGenericItemModelDetails::begin(*children);
const auto end = QGenericItemModelDetails::end(*children);
for (auto it = begin; it != end; ++it) {