Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/xmerge/source/xmerge/java/org/openoffice/xmerge/merger/diff/ParaNodeIterator.java b/xmerge/source/xmerge/java/org/openoffice/xmerge/merger/diff/ParaNodeIterator.java
new file mode 100644
index 000000000..0ab96e9b8
--- /dev/null
+++ b/xmerge/source/xmerge/java/org/openoffice/xmerge/merger/diff/ParaNodeIterator.java
@@ -0,0 +1,69 @@
+/*
+ * 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 .
+ */
+
+package org.openoffice.xmerge.merger.diff;
+
+import org.w3c.dom.Node;
+
+import org.openoffice.xmerge.ConverterCapabilities;
+import org.openoffice.xmerge.converter.xml.OfficeConstants;
+
+/**
+ * This is an implementation of the {@code Iterator} interface.
+ *
+ * <p>It will traverse the tree and find the Paragraph/Heading {@code Node}
+ * sequences.</p>
+ *
+ * <p>Note: Once the XML Tree is parsed, then the {@code Iterator} will be a
+ * snapshot of that tree. That means even the tree is modified later, then the
+ * cached paragraph {@code Node} list will not be updated accordingly. For this
+ * reason and for performance reasons this {@code Iterator} does not support any
+ * operation methods such as insert, remove or replace. The main purpose of this
+ * {@code Iterator} is to be used with difference, not with merge.</p>
+ */
+public final class ParaNodeIterator extends NodeIterator {
+
+    /**
+     * Standard constructor.
+     *
+     * @param  cc    The {@code ConverterCapabilities}.
+     * @param  node  The initial root {@code Node}.
+     */
+    public ParaNodeIterator(ConverterCapabilities cc, Node node) {
+        // not using convertercapabilities unless it's needed in future.
+        super(cc, node);
+    }
+
+    /**
+     * Overwrite the parent <code>nodeSupported</code> method.
+     *
+     * @param   node  {@code Node} to check.
+     *
+     * @return  {@code true} if the {@code Node} is supported, {@code false}
+     *          otherwise.
+     */
+    @Override
+    protected boolean nodeSupported(Node node) {
+        // can use an array later to check all possible tags for
+        // future expansion
+        String nodeName = node.getNodeName();
+        return node.getNodeType() == Node.ELEMENT_NODE &&
+            (nodeName.equals(OfficeConstants.TAG_PARAGRAPH) ||
+            nodeName.equals(OfficeConstants.TAG_HEADING));
+    }
+}