Speculator for handling page generation

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/FOP_0-20-0_Alt-Design@197524 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/fop/area/Page.java

@@ -1,136 +1,40 @@
 /*
- * Copyright 1999-2004 The Apache Software Foundation.
- * 
+ *
+ * Copyright 2004 The Apache Software Foundation.
+ *
  * Licensed 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
- * 
+ *
+ *     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.
+ *
+ * Created on 16/04/2004
+ * $Id$
  */
-
-/* $Id$ */
-
 package org.apache.fop.area;
 
-import java.io.Serializable;
-import java.util.Map;
-
-import org.apache.fop.fo.pagination.Region;
-
 /**
- * The page.
- * This holds the contents of the page. Each region is added.
- * The unresolved references area added so that if the page is
- * serialized then it will handle the resolving properly after
- * being reloaded.
- * This is serializable so it can be saved to cache to save
- * memory if there are forward references.
- * The page is cloneable so the page master can make copies of
- * the top level page and regions.
+ * This class gathers all of of the components necessary to set up the basic
+ * page area precursors for the resolution of <code>fo:flow</code> and
+ * <code>fo:static-content</code> elements.
+ * 
+ * @author pbw
+ * @version $Revision$ $Name$
  */
-public class Page implements Serializable, Cloneable {
-    // contains before, start, body, end and after regions
-    private RegionViewport regionBefore = null;
-    private RegionViewport regionStart = null;
-    private RegionViewport regionBody = null;
-    private RegionViewport regionEnd = null;
-    private RegionViewport regionAfter = null;
-
-    // temporary map of unresolved objects used when serializing the page
-    private Map unresolved = null;
-
-    /**
-     * Set the region on this page.
-     *
-     * @param areaclass the area class of the region to set
-     * @param port the region viewport to set
-     */
-    public void setRegionViewport(int areaclass, RegionViewport port) {
-        if (areaclass == Region.BEFORE_CODE) {
-            regionBefore = port;
-        } else if (areaclass == Region.START_CODE) {
-            regionStart = port;
-        } else if (areaclass == Region.BODY_CODE) {
-            regionBody = port;
-        } else if (areaclass == Region.END_CODE) {
-            regionEnd = port;
-        } else if (areaclass == Region.AFTER_CODE) {
-            regionAfter = port;
-        }
-    }
-
+public class Page {
+    
     /**
-     * Get the region from this page.
-     *
-     * @param areaclass the region area class
-     * @return the region viewport or null if none
+     * Constructs a null page in the absence of a particular
+     * <code>FoSimplePageMaster</code>.  All dimensions are undefined, and
+     * only the minimal set of areas is constructed.
      */
-    public RegionViewport getRegionViewport(int areaclass) {
-        if (areaclass == Region.BEFORE_CODE) {
-            return regionBefore;
-        } else if (areaclass == Region.START_CODE) {
-            return regionStart;
-        } else if (areaclass == Region.BODY_CODE) {
-            return regionBody;
-        } else if (areaclass == Region.END_CODE) {
-            return regionEnd;
-        } else if (areaclass == Region.AFTER_CODE) {
-            return regionAfter;
-        }
-        return null;
-    }
-
-    /**
-     * Clone this page.
-     * This returns a new page with a clone of all the regions.
-     *
-     * @return a new clone of this page
-     */
-    public Object clone() {
-        Page p = new Page();
-        if (regionBefore != null) {
-            p.regionBefore = (RegionViewport)regionBefore.clone();
-        }
-        if (regionStart != null) {
-            p.regionStart = (RegionViewport)regionStart.clone();
-        }
-        if (regionBody != null) {
-            p.regionBody = (RegionViewport)regionBody.clone();
-        }
-        if (regionEnd != null) {
-            p.regionEnd = (RegionViewport)regionEnd.clone();
-        }
-        if (regionAfter != null) {
-            p.regionAfter = (RegionViewport)regionAfter.clone();
-        }
-
-        return p;
-    }
-
-    /**
-     * Set the unresolved references on this page for serializing.
-     *
-     * @param unres the map of unresolved objects
-     */
-    public void setUnresolvedReferences(Map unres) {
-        unresolved = unres;
-    }
-
-    /**
-     * Get the map unresolved references from this page.
-     * This should be called after deserializing to retrieve
-     * the map of unresolved references that were serialized.
-     *
-     * @return the de-serialized map of unresolved objects
-     */
-    public Map getUnresolvedReferences() {
-        return unresolved;
+    public Page() {
+        
     }
 }
-