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+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+import java.util.ArrayList;
+
+import com.sun.star.lang.IndexOutOfBoundsException;
+
+/**
+ Base class for all tree nodes.
+ */
+abstract class AccessibleTreeNode
+{
+ /// The parent node. It is null for the root node.
+ private AccessibleTreeNode maParent;
+
+ /// The object to be displayed.
+ private final Object maDisplayObject;
+
+ public AccessibleTreeNode (Object aDisplayObject, AccessibleTreeNode aParent)
+ {
+ maDisplayObject = aDisplayObject;
+ maParent = aParent;
+ }
+
+ public void update ()
+ {
+ // Empty
+ }
+
+ public AccessibleTreeNode getParent ()
+ {
+ return maParent;
+ }
+
+ public int getChildCount ()
+ {
+ return 0;
+ }
+
+ public AccessibleTreeNode getChild (int nIndex)
+ throws IndexOutOfBoundsException
+ {
+ throw new IndexOutOfBoundsException();
+ }
+
+ public AccessibleTreeNode getChildNoCreate (int nIndex)
+ throws IndexOutOfBoundsException
+ {
+ throw new IndexOutOfBoundsException();
+ }
+
+ public boolean removeChild (int nIndex)
+ throws IndexOutOfBoundsException
+ {
+ throw new IndexOutOfBoundsException();
+ }
+
+ public abstract int indexOf (AccessibleTreeNode aNode);
+
+ /** Create a path to this node by first asking the parent for its path
+ and then appending this object.
+ */
+ public void createPath (java.util.List<AccessibleTreeNode> aPath)
+ {
+ if (maParent != null)
+ maParent.createPath (aPath);
+ aPath.add (this);
+ }
+
+ public Object[] createPath ()
+ {
+ ArrayList<AccessibleTreeNode> aPath = new ArrayList<AccessibleTreeNode> (1);
+ createPath (aPath);
+ return aPath.toArray();
+ }
+
+ public boolean isLeaf()
+ {
+ return true;
+ }
+
+ @Override
+ public String toString()
+ {
+ return maDisplayObject.toString();
+ }
+
+ /** get names of supported actions */
+ public String[] getActions ()
+ {
+ return new String[] {};
+ }
+
+ /** perform action */
+ public void performAction (int nIndex)
+ {
+ }
+}