[FOray-commit] SF.net SVN: foray: [7852] trunk/foray/foray-fotree/src/java/org/foray/ fotree/fo/obj/PageMasterResolver.java

[<vic...@us...>]

Revision: 7852
          http://svn.sourceforge.net/foray/?rev=7852&view=rev
Author:   victormote
Date:     2006-09-02 11:10:09 -0700 (Sat, 02 Sep 2006)

Log Message:
-----------
Conform to axsl changes that create a PageMasterResolver class that handle the layout-time issues of keeping track of which page master should be used next.

Added Paths:
-----------
    trunk/foray/foray-fotree/src/java/org/foray/fotree/fo/obj/PageMasterResolver.java

Added: trunk/foray/foray-fotree/src/java/org/foray/fotree/fo/obj/PageMasterResolver.java
===================================================================
--- trunk/foray/foray-fotree/src/java/org/foray/fotree/fo/obj/PageMasterResolver.java	                        (rev 0)
+++ trunk/foray/foray-fotree/src/java/org/foray/fotree/fo/obj/PageMasterResolver.java	2006-09-02 18:10:09 UTC (rev 7852)
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2006 The FOray Project.
+ *      http://www.foray.org
+ *
+ * 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
+ *
+ * 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.
+ *
+ * This work is in part derived from the following work(s), used with the
+ * permission of the licensor:
+ *      Apache FOP, licensed by the Apache Software Foundation
+ *
+ */
+
+/* $Id$ */
+
+package org.foray.fotree.fo.obj;
+
+import org.axsl.foR.FOTreeException;
+import org.axsl.foR.fo.Flow;
+import org.axsl.foR.fo.SimplePageMaster;
+
+/**
+ * Provides pages sequentially for a given {@link PageSequence}.
+ * Implementations may keep track of state information, that is, what
+ * sub-sequence specifiers have already been exhausted and partially exhausted.
+ * Therefore, only one instance of {@link PageMasterResolver} should be used for
+ * a given layout of a {@link PageSequence}.
+ */
+public class PageMasterResolver implements org.axsl.foR.fo.PageMasterResolver {
+
+    /** The parent page-sequence. */
+    private PageSequence pageSequence;
+
+    private int lastDocumentPageNumber = 0;
+
+    public PageMasterResolver(final PageSequence pageSequence,
+            final int lastPageNumber) {
+        this.pageSequence = pageSequence;
+        this.lastDocumentPageNumber = lastPageNumber;
+        this.lastDocumentPageNumber = Math.max(this.lastDocumentPageNumber, 0);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public SimplePageMaster getNextPageMaster(final boolean isBlank)
+            throws FOTreeException {
+
+        org.foray.fotree.fo.obj.SimplePageMaster spm = getSimplePageMaster();
+        if (spm != null) {
+            return spm;
+        }
+        final PageSequenceMaster psm = getPageSequenceMaster();
+        if (psm == null) {
+            return null;
+        }
+        final Flow flow = getFlow();
+        this.lastDocumentPageNumber ++;
+        spm = psm.getNextSimplePageMaster(
+                ((this.lastDocumentPageNumber % 2) == 1), isBlank);
+        final Region region = (Region) spm.getRegionBody();
+        if (!flow.traitFlowName().equals(region.traitRegionName())) {
+            throw new FOTreeException("Flow '" + flow.traitFlowName()
+                    + "' does not map to the region-body in page-master '"
+                    + spm.traitMasterName() + "'");
+        }
+        return spm;
+    }
+
+    private org.foray.fotree.fo.obj.SimplePageMaster getSimplePageMaster() {
+        return this.pageSequence.getSimplePageMaster();
+    }
+
+    private PageSequenceMaster getPageSequenceMaster() {
+        return this.pageSequence.getPageSequenceMaster();
+    }
+
+    private Flow getFlow() {
+        return this.pageSequence.getFlow();
+    }
+
+}


Property changes on: trunk/foray/foray-fotree/src/java/org/foray/fotree/fo/obj/PageMasterResolver.java
___________________________________________________________________
Name: svn:keywords
   + "Author Id Rev Date URL"
Name: svn:eol-style
   + native


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