void QAccessibleTable::modelChange(QAccessibleTableModelChangeEvent *event)
{
// if there is no cache yet, we don't update anything
if (childToId.isEmpty())
return;
switch (event->modelChangeType()) {
case QAccessibleTableModelChangeEvent::ModelReset:
Q_FOREACH (QAccessible::Id id, childToId)
QAccessible::deleteAccessibleInterface(id);
childToId.clear();
break;
// rows are inserted: move every row after that
case QAccessibleTableModelChangeEvent::RowsInserted:
case QAccessibleTableModelChangeEvent::ColumnsInserted: {
int newRows = event->lastRow() - event->firstRow() + 1;
int newColumns = event->lastColumn() - event->firstColumn() + 1;
ChildCache newCache;
ChildCache::ConstIterator iter = childToId.constBegin();
while (iter != childToId.constEnd()) {
QAccessible::Id id = iter.value();
QAccessibleInterface *iface = QAccessible::accessibleInterface(id);
Q_ASSERT(iface);
if (iface->role() == QAccessible::Cell || iface->role() == QAccessible::ListItem) {
Q_ASSERT(iface->tableCellInterface());
QAccessibleTableCell *cell = static_cast<QAccessibleTableCell*>(iface->tableCellInterface());
if (event->modelChangeType() == QAccessibleTableModelChangeEvent::RowsInserted
&& cell->m_index.row() >= event->firstRow()) {
int newRow = cell->m_index.row() + newRows;
cell->m_index = cell->m_index.sibling(newRow, cell->m_index.column());
} else if (event->modelChangeType() == QAccessibleTableModelChangeEvent::ColumnsInserted
&& cell->m_index.column() >= event->firstColumn()) {
int newColumn = cell->m_index.column() + newColumns;
cell->m_index = cell->m_index.sibling(cell->m_index.row(), newColumn);
}
} else if (event->modelChangeType() == QAccessibleTableModelChangeEvent::RowsInserted
&& iface->role() == QAccessible::RowHeader) {
QAccessibleTableHeaderCell *cell = static_cast<QAccessibleTableHeaderCell*>(iface);
if (cell->index >= event->firstRow()) {
cell->index += newRows;
}
} else if (event->modelChangeType() == QAccessibleTableModelChangeEvent::ColumnsInserted
&& iface->role() == QAccessible::ColumnHeader) {
QAccessibleTableHeaderCell *cell = static_cast<QAccessibleTableHeaderCell*>(iface);
if (cell->index >= event->firstColumn()) {
cell->index += newColumns;
}
}
if (indexOfChild(iface) >= 0) {
newCache.insert(indexOfChild(iface), id);
} else {
// ### This should really not happen,
// but it might if the view has a root index set.
// This needs to be fixed.
QAccessible::deleteAccessibleInterface(id);
}
++iter;
}
childToId = newCache;
break;
}
case QAccessibleTableModelChangeEvent::ColumnsRemoved:
case QAccessibleTableModelChangeEvent::RowsRemoved: {
int deletedColumns = event->lastColumn() - event->firstColumn() + 1;
int deletedRows = event->lastRow() - event->firstRow() + 1;
ChildCache newCache;
ChildCache::ConstIterator iter = childToId.constBegin();
while (iter != childToId.constEnd()) {
QAccessible::Id id = iter.value();
QAccessibleInterface *iface = QAccessible::accessibleInterface(id);
Q_ASSERT(iface);
if (iface->role() == QAccessible::Cell || iface->role() == QAccessible::ListItem) {
Q_ASSERT(iface->tableCellInterface());
QAccessibleTableCell *cell = static_cast<QAccessibleTableCell*>(iface->tableCellInterface());
if (event->modelChangeType() == QAccessibleTableModelChangeEvent::RowsRemoved) {
if (cell->m_index.row() < event->firstRow()) {
newCache.insert(indexOfChild(cell), id);
} else if (cell->m_index.row() > event->lastRow()) {
int newRow = cell->m_index.row() - deletedRows;
cell->m_index = cell->m_index.sibling(newRow, cell->m_index.column());
newCache.insert(indexOfChild(cell), id);
} else {
QAccessible::deleteAccessibleInterface(id);
}
} else if (event->modelChangeType() == QAccessibleTableModelChangeEvent::ColumnsRemoved) {
if (cell->m_index.column() < event->firstColumn()) {
newCache.insert(indexOfChild(cell), id);
} else if (cell->m_index.column() > event->lastColumn()) {
int newColumn = cell->m_index.column() - deletedColumns;
cell->m_index = cell->m_index.sibling(cell->m_index.row(), newColumn);
newCache.insert(indexOfChild(cell), id);
} else {
QAccessible::deleteAccessibleInterface(id);
}
}
} else if (event->modelChangeType() == QAccessibleTableModelChangeEvent::RowsRemoved
&& iface->role() == QAccessible::RowHeader) {
QAccessibleTableHeaderCell *cell = static_cast<QAccessibleTableHeaderCell*>(iface);
if (cell->index < event->firstRow()) {
newCache.insert(indexOfChild(cell), id);
} else if (cell->index > event->lastRow()) {
cell->index -= deletedRows;
newCache.insert(indexOfChild(cell), id);
} else {
QAccessible::deleteAccessibleInterface(id);
}
} else if (event->modelChangeType() == QAccessibleTableModelChangeEvent::ColumnsRemoved
&& iface->role() == QAccessible::ColumnHeader) {
QAccessibleTableHeaderCell *cell = static_cast<QAccessibleTableHeaderCell*>(iface);
if (cell->index < event->firstColumn()) {
newCache.insert(indexOfChild(cell), id);
} else if (cell->index > event->lastColumn()) {
cell->index -= deletedColumns;
newCache.insert(indexOfChild(cell), id);
} else {
QAccessible::deleteAccessibleInterface(id);
}
}
++iter;
}
childToId = newCache;
break;
}
case QAccessibleTableModelChangeEvent::DataChanged:
// nothing to do in this case
break;
}
}
