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+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Inkscape::DocumentSubset - view of a document including only a subset
+ * of nodes
+ *
+ * Copyright 2006 MenTaLguY <mental@rydia.net>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_INKSCAPE_DOCUMENT_SUBSET_H
+#define SEEN_INKSCAPE_DOCUMENT_SUBSET_H
+
+#include <cstddef>
+#include <memory>
+#include <sigc++/connection.h>
+#include <sigc++/functors/slot.h>
+
+class SPObject;
+class SPDocument;
+
+namespace Inkscape {
+
+class DocumentSubset
+{
+public:
+ bool includes(SPObject *obj) const;
+
+ SPObject *parentOf(SPObject *obj) const;
+ unsigned childCount(SPObject *obj) const;
+ unsigned indexOf(SPObject *obj) const;
+ SPObject *nthChildOf(SPObject *obj, unsigned n) const;
+
+ sigc::connection connectChanged(sigc::slot<void ()> slot) const;
+ sigc::connection connectAdded(sigc::slot<void (SPObject *)> slot) const;
+ sigc::connection connectRemoved(sigc::slot<void (SPObject *)> slot) const;
+
+protected:
+ DocumentSubset();
+ ~DocumentSubset();
+
+ void _addOne(SPObject *obj);
+ void _removeOne(SPObject *obj) { _remove(obj, false); }
+ void _removeSubtree(SPObject *obj) { _remove(obj, true); }
+ void _clear();
+
+private:
+ DocumentSubset(DocumentSubset const &) = delete; // no copy
+ void operator=(DocumentSubset const &) = delete; // no assign
+
+ void _remove(SPObject *obj, bool subtree);
+
+ struct Relations;
+
+ std::unique_ptr<Relations> _relations;
+};
+
+}
+
+#endif
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :