1 files changed, 107 insertions, 0 deletions
diff --git a/src/java/org/apache/fop/fo/FOTreeBuilderContext.java b/src/java/org/apache/fop/fo/FOTreeBuilderContext.java
new file mode 100644
index 000000000..0cbdd7797
--- /dev/null
+++ b/src/java/org/apache/fop/fo/FOTreeBuilderContext.java
@@ -0,0 +1,107 @@
+/*
+ * 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
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* $Id$ */
+
+package org.apache.fop.fo;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Context class providing information needed while building the FO tree.
+ */
+public class FOTreeBuilderContext {
+
+    /**
+     * The current set of id's in the FO tree.
+     * This is used so we know if the FO tree contains duplicates.
+     */
+    private Set idReferences = new HashSet();
+    
+    /**
+     * The property list maker.
+     */
+    protected PropertyListMaker propertyListMaker;
+
+    /**
+     * The XMLWhitespaceHandler for this tree
+     */
+    protected XMLWhiteSpaceHandler whiteSpaceHandler = new XMLWhiteSpaceHandler();
+    
+    /**
+     * Indicates whether processing descendants of a marker
+     */
+    private boolean inMarker = false;
+    
+    /**
+     * Returns the set of ID references.
+     * @return the ID references
+     */
+    public Set getIDReferences() {
+        return idReferences;
+    }
+
+    /**
+     * Return the propertyListMaker.
+     * 
+     * @return the currently active {@link PropertyListMaker}
+     */
+    public PropertyListMaker getPropertyListMaker() {
+        return propertyListMaker;
+    }
+     
+    /**
+     * Set a new propertyListMaker.
+     * 
+     * @param propertyListMaker the new {@link PropertyListMaker} to use
+     */
+    public void setPropertyListMaker(PropertyListMaker propertyListMaker) {
+        this.propertyListMaker = propertyListMaker;
+    }
+    
+    /**
+     * Return the XMLWhiteSpaceHandler
+     * @return the whiteSpaceHandler
+     */
+    public XMLWhiteSpaceHandler getXMLWhiteSpaceHandler() {
+        return whiteSpaceHandler;
+    }
+
+    /**
+     * Switch to or from marker context
+     * (used by FOTreeBuilder when processing
+     *  a marker)
+     * 
+     * @param inMarker  true if a marker is being processed; 
+     *                  false otherwise
+     *
+     */
+    protected void switchMarkerContext(boolean inMarker) {
+        this.inMarker = inMarker;
+    }
+    
+    /**
+     * Check whether in marker context
+     * 
+     * @return true if a marker is being processed
+     */
+    protected boolean inMarker() {
+        return this.inMarker;
+    }
+    
+}