From 42dc46911b6f085878be224ab0787e69a524fcb0 Mon Sep 17 00:00:00 2001
From: Glen Mazza <gmazza@apache.org>
Date: Mon, 6 Sep 2004 18:28:17 +0000
Subject: [PATCH] PR: Obtained from: Submitted by: Reviewed by: Switched to a
 static FOInputHandler object for the FOTree instead of relying on recursion
 to get to the FOInputHandler object stored at pagination.Root.

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@197910 13f79535-47bb-0310-9956-ffa450edef68
---
 src/java/org/apache/fop/fo/FONode.java        | 16 +++++++++++-
 src/java/org/apache/fop/fo/FOTreeBuilder.java |  2 +-
 .../org/apache/fop/fo/pagination/Root.java    | 25 -------------------
 3 files changed, 16 insertions(+), 27 deletions(-)

diff --git a/src/java/org/apache/fop/fo/FONode.java b/src/java/org/apache/fop/fo/FONode.java
index 193b92e57..c42577f7c 100644
--- a/src/java/org/apache/fop/fo/FONode.java
+++ b/src/java/org/apache/fop/fo/FONode.java
@@ -41,6 +41,12 @@ public abstract class FONode {
 
     protected static String FO_URI = FOElementMapping.URI;
 
+    /** 
+     * FOInputHandler that handles FO events occurring 
+     * during FO Tree processing.
+     */
+    protected static FOInputHandler foInputHandler = null;
+
     /** Parent FO node */
     protected FONode parent;
 
@@ -72,13 +78,21 @@ public abstract class FONode {
         }
     }
 
+    /**
+     * Sets the FOInputHandler that the FOTree processing fires events to
+     * @param inputHandler the FOInputHandler subclass to send FO events to
+     */
+    public static void setFOInputHandler(FOInputHandler inputHandler) {
+        FONode.foInputHandler = inputHandler;
+    } 
+
     /**
      * Recursively goes up the FOTree hierarchy until the fo:root is found,
      * which returns the parent FOInputHandler.
      * @return the FOInputHandler object that is the parent of the FO Tree
      */
     public FOInputHandler getFOInputHandler() {
-        return parent.getFOInputHandler();
+        return FONode.foInputHandler;
     }
 
     /**
diff --git a/src/java/org/apache/fop/fo/FOTreeBuilder.java b/src/java/org/apache/fop/fo/FOTreeBuilder.java
index da0f6f6c9..a5b94d978 100644
--- a/src/java/org/apache/fop/fo/FOTreeBuilder.java
+++ b/src/java/org/apache/fop/fo/FOTreeBuilder.java
@@ -217,6 +217,7 @@ public class FOTreeBuilder extends DefaultHandler {
      */
     public void startDocument() throws SAXException {
         rootFObj = null;    // allows FOTreeBuilder to be reused
+        FONode.setFOInputHandler(foInputHandler);
         if (log.isDebugEnabled()) {
             log.debug("Building formatting object tree");
         }
@@ -273,7 +274,6 @@ public class FOTreeBuilder extends DefaultHandler {
 
         if (rootFObj == null) {
             rootFObj = (Root) foNode;
-            rootFObj.setFOInputHandler(foInputHandler);
         } else {
             currentFObj.addChildNode(foNode);
         }
diff --git a/src/java/org/apache/fop/fo/pagination/Root.java b/src/java/org/apache/fop/fo/pagination/Root.java
index a879f9469..71e0c5ffe 100644
--- a/src/java/org/apache/fop/fo/pagination/Root.java
+++ b/src/java/org/apache/fop/fo/pagination/Root.java
@@ -49,11 +49,6 @@ public class Root extends FObj {
      */
     private int runningPageNumberCounter = 0;
 
-    /** 
-     * Controlling FOTreeHandler object for this FO Tree
-     */
-    private FOInputHandler foInputHandler = null;
-
     /**
      * @see org.apache.fop.fo.FONode#FONode(FONode)
      */
@@ -202,26 +197,6 @@ public class Root extends FObj {
         return bookmarks;
     }
 
-    /**
-     * Sets the Document that this Root is attached to
-     * @param document the apps.Document implementation to which this Root
-     * is attached
-     */
-    public void setFOInputHandler(FOInputHandler foInputHandler) {
-        this.foInputHandler = foInputHandler;
-    }
-
-    /**
-     * This method overrides the FONode version. The FONode version calls the
-     * method by the same name for the parent object. Since Root is at the top
-     * of the tree, it returns the actual FOInputHandler object. Thus, any FONode
-     * can use this chain to find which FOInputHandler it is being built for.
-     * @return the FOInputHandler implementation that this Root is attached to
-     */
-    public FOInputHandler getFOInputHandler() {
-        return foInputHandler;
-    }
-
     /**
      * @see org.apache.fop.fo.FObj#getName()
      */
-- 
2.39.5