Change Details

Fix memory leaks due to recreation of AbstractFileFilter for each call of `ImportFileWidget::currentFileFilter()`. The filter now is stored in a `QSharedPointer` as a member of ImportFileWidget and reused if the file type does not change. The change is propagated to options widgets. A new method `AbstractFileFilter::type()` returns the type of the current filter.

Fix memory leaks due to recreation of AbstractFileFilter for each call of `ImportFileWidget::currentFileFilter()`. The filter now is cached as a member of ImportFileWidget and reused if the file type does not change. A new method `AbstractFileFilter::type()` returns the type of the current filter.

Fix memory leaks due to recreation of AbstractFileFilter for each call of `ImportFileWidget::currentFileFilter()`. The filter now is stored in a `QSharedPointer` as a member of ImportFileWidget and reused if the file type does not change.cached The change is propagated to options widgetsas a member of ImportFileWidget and reused if the file type does not change. A new method `AbstractFileFilter::type()` returns the type of the current filter.