1 files changed, 207 insertions, 0 deletions
diff --git a/reportbuilder/java/org/libreoffice/report/pentaho/layoutprocessor/OfficeGroupLayoutController.java b/reportbuilder/java/org/libreoffice/report/pentaho/layoutprocessor/OfficeGroupLayoutController.java
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index 000000000..e44bbcc71
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+++ b/reportbuilder/java/org/libreoffice/report/pentaho/layoutprocessor/OfficeGroupLayoutController.java
@@ -0,0 +1,207 @@
+/*
+ * 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.libreoffice.report.pentaho.layoutprocessor;
+
+import org.libreoffice.report.pentaho.model.OfficeGroup;
+import org.libreoffice.report.pentaho.model.OfficeGroupSection;
+
+import org.jfree.layouting.util.AttributeMap;
+import org.jfree.report.DataSourceException;
+import org.jfree.report.JFreeReportInfo;
+import org.jfree.report.ReportDataFactoryException;
+import org.jfree.report.ReportProcessingException;
+import org.jfree.report.flow.FlowController;
+import org.jfree.report.flow.ReportTarget;
+import org.jfree.report.flow.layoutprocessor.ElementLayoutController;
+import org.jfree.report.flow.layoutprocessor.LayoutController;
+import org.jfree.report.flow.layoutprocessor.SectionLayoutController;
+import org.jfree.report.structure.Element;
+
+/**
+ * Todo: Document me!
+ *
+ * @since 15.03.2007
+ */
+public class OfficeGroupLayoutController extends SectionLayoutController
+        implements OfficeRepeatingStructureLayoutController
+{
+
+    private static final int STATE_PROCESS_REPEATING_HEADER = 0;
+    private static final int STATE_PROCESS_REPEATING_FOOTER = 1;
+    public static final int STATE_PROCESS_NORMAL_FLOW = 3;
+    private boolean waitForJoin;
+    private int state;
+    private VariablesCollection variablesCollection;
+    private boolean repeatHeader;
+    private boolean repeatFooter;
+
+    /**
+     * Initializes the layout controller. This method is called exactly once. It
+     * is the creators responsibility to call this method.
+     *
+     * <p>Calling initialize after the first advance must result in a
+     * IllegalStateException.</p>
+     *
+     * @param node           the currently processed object or layout node.
+     * @param flowController the current flow controller.
+     * @param parent         the parent layout controller that was responsible for
+     *                       instantiating this controller.
+     * @throws org.jfree.report.DataSourceException
+     *          if there was a problem reading data from the datasource.
+     * @throws org.jfree.report.ReportProcessingException
+     *          if there was a general problem during the report processing.
+     * @throws org.jfree.report.ReportDataFactoryException
+     *          if a query failed.
+     */
+    @Override
+    public void initialize(final Object node,
+            final FlowController flowController,
+            final LayoutController parent)
+            throws DataSourceException, ReportDataFactoryException,
+            ReportProcessingException
+    {
+        super.initialize(node, flowController, parent);
+        state = OfficeGroupLayoutController.STATE_PROCESS_REPEATING_HEADER;
+        variablesCollection = new VariablesCollection(computeVariablesPrefix());
+
+
+        final OfficeGroup group = (OfficeGroup) getElement();
+        final OfficeGroupSection header = group.getHeader();
+        repeatHeader = (header != null && header.isRepeatSection());
+
+        final OfficeGroupSection footer = group.getFooter();
+        repeatFooter = (footer != null && footer.isRepeatSection());
+    }
+
+    @Override
+    protected LayoutController processContent(final ReportTarget target)
+            throws DataSourceException, ReportProcessingException,
+            ReportDataFactoryException
+    {
+        if (state == OfficeGroupLayoutController.STATE_PROCESS_REPEATING_HEADER)
+        {
+
+            final OfficeGroupLayoutController controller =
+                    (OfficeGroupLayoutController) clone();
+            controller.state =
+                    OfficeGroupLayoutController.STATE_PROCESS_REPEATING_FOOTER;
+
+            if (!repeatHeader)
+            {
+                return controller;
+            }
+
+            final OfficeGroup group = (OfficeGroup) getElement();
+            final OfficeGroupSection header = group.getHeader();
+
+            if (header == null)
+            {
+                return controller;
+            }
+
+            controller.waitForJoin = true;
+            return processChild(controller, header, getFlowController());
+        }
+
+        if (state == OfficeGroupLayoutController.STATE_PROCESS_REPEATING_FOOTER)
+        {
+
+            final OfficeGroupLayoutController controller =
+                    (OfficeGroupLayoutController) clone();
+            controller.state = OfficeGroupLayoutController.STATE_PROCESS_NORMAL_FLOW;
+
+            if (!repeatFooter)
+            {
+                return controller;
+            }
+
+            final OfficeGroup group = (OfficeGroup) getElement();
+            final OfficeGroupSection footer = group.getFooter();
+
+            if (footer == null)
+            {
+                return controller;
+            }
+
+            controller.waitForJoin = true;
+            return processChild(controller, footer, getFlowController());
+        }
+
+        return super.processContent(target);
+    }
+
+    /**
+     * Joins with a delegated process flow. This is generally called from a child
+     * flow and should *not* (I mean it!) be called from outside. If you do,
+     * you'll suffer.
+     *
+     * @param flowController the flow controller of the parent.
+     * @return the joined layout controller that incorporates all changes from the
+     *         delegate.
+     */
+    @Override
+    public LayoutController join(final FlowController flowController)
+    {
+        if (waitForJoin)
+        {
+            final OfficeGroupLayoutController derived = (OfficeGroupLayoutController) clone();
+            derived.setProcessingState(ElementLayoutController.OPENED);
+            derived.setFlowController(flowController);
+            derived.waitForJoin = false;
+            return derived;
+        }
+        return super.join(flowController);
+    }
+
+    public boolean isNormalFlowProcessing()
+    {
+        return state == OfficeGroupLayoutController.STATE_PROCESS_NORMAL_FLOW;
+    }
+
+    private String computeVariablesPrefix()
+    {
+        int count = 0;
+        LayoutController lc = this;
+        while (lc != null)
+        {
+            if (lc instanceof OfficeGroupLayoutController)
+            {
+                count++;
+            }
+            lc = lc.getParent();
+        }
+        return "auto_group_" + count + "_";
+    }
+
+    public VariablesCollection getVariablesCollection()
+    {
+        return variablesCollection;
+    }
+
+    @Override
+    protected AttributeMap computeAttributes(final FlowController fc, final Element element, final ReportTarget target)
+            throws DataSourceException
+    {
+        final AttributeMap map = new AttributeMap(super.computeAttributes(fc, element, target));
+        final String value = String.valueOf(repeatHeader || repeatFooter);
+        map.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, "repeating-header-or-footer", value);
+        map.makeReadOnly();
+        return map;
+    }
+}