1 files changed, 107 insertions, 0 deletions
diff --git a/src/object/sp-tref-reference.cpp b/src/object/sp-tref-reference.cpp
new file mode 100644
index 0000000..798e74a
--- /dev/null
+++ b/src/object/sp-tref-reference.cpp
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * The reference corresponding to href of <tref> element.
+ *
+ * Copyright (C) 2007 Gail Banaszkiewicz
+ *
+ * This file was created based on sp-use-reference.cpp
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+//#include "enums.h"
+#include "sp-tref-reference.h"
+
+#include "sp-text.h"
+#include "sp-tref.h"
+
+
+bool SPTRefReference::_acceptObject(SPObject * const obj) const
+{
+    SPObject *owner = getOwner();
+    if (SP_IS_TREF(owner))
+        return URIReference::_acceptObject(obj);
+    else
+        return false;
+}
+
+
+void SPTRefReference::updateObserver()
+{
+    SPObject *referred = getObject();
+
+    if (referred) {
+        if (subtreeObserved) {
+            subtreeObserved->removeObserver(*this);
+            delete subtreeObserved;
+        }
+
+        subtreeObserved = new Inkscape::XML::Subtree(*referred->getRepr());
+        subtreeObserved->addObserver(*this);
+    }
+}
+
+
+void SPTRefReference::notifyChildAdded(Inkscape::XML::Node &/*node*/, Inkscape::XML::Node &/*child*/,
+                                       Inkscape::XML::Node */*prev*/)
+{
+    SPObject *owner = getOwner();
+
+    if (owner && SP_IS_TREF(owner)) {
+        sp_tref_update_text(SP_TREF(owner));
+    }
+}
+
+
+void SPTRefReference::notifyChildRemoved(Inkscape::XML::Node &/*node*/, Inkscape::XML::Node &/*child*/,
+                                         Inkscape::XML::Node */*prev*/)
+{
+    SPObject *owner = getOwner();
+
+    if (owner && SP_IS_TREF(owner)) {
+        sp_tref_update_text(SP_TREF(owner));
+    }
+}
+
+
+void SPTRefReference::notifyChildOrderChanged(Inkscape::XML::Node &/*node*/, Inkscape::XML::Node &/*child*/,
+                                              Inkscape::XML::Node */*old_prev*/, Inkscape::XML::Node */*new_prev*/)
+{
+    SPObject *owner = getOwner();
+
+    if (owner && SP_IS_TREF(owner)) {
+        sp_tref_update_text(SP_TREF(owner));
+    }
+}
+
+
+void SPTRefReference::notifyContentChanged(Inkscape::XML::Node &/*node*/,
+                                           Inkscape::Util::ptr_shared /*old_content*/,
+                                           Inkscape::Util::ptr_shared /*new_content*/)
+{
+    SPObject *owner = getOwner();
+
+    if (owner && SP_IS_TREF(owner)) {
+        sp_tref_update_text(SP_TREF(owner));
+    }
+}
+
+
+void SPTRefReference::notifyAttributeChanged(Inkscape::XML::Node &/*node*/, GQuark /*name*/,
+                                             Inkscape::Util::ptr_shared /*old_value*/,
+                                             Inkscape::Util::ptr_shared /*new_value*/)
+{
+    // Do nothing - tref only cares about textual content
+}
+
+
+/*
+  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 :