1 files changed, 204 insertions, 0 deletions
diff --git a/reportbuilder/java/com/sun/star/report/pentaho/layoutprocessor/OfficeGroupLayoutController.java b/reportbuilder/java/com/sun/star/report/pentaho/layoutprocessor/OfficeGroupLayoutController.java
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+package com.sun.star.report.pentaho.layoutprocessor;
+
+import com.sun.star.report.pentaho.model.OfficeGroup;
+import com.sun.star.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!
+ *
+ * @author Thomas Morgner
+ * @since 15.03.2007
+ */
+public class OfficeGroupLayoutController extends SectionLayoutController
+        implements OfficeRepeatingStructureLayoutController
+{
+
+    public static final int STATE_PROCESS_REPEATING_HEADER = 0;
+    public 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;
+
+    public OfficeGroupLayoutController()
+    {
+    }
+
+    /**
+     * 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.
+     *
+     * @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.
+     */
+    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());
+    }
+
+    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();
+            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();
+            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 incorperates all changes from the
+     *         delegate.
+     */
+    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;
+    }
+
+    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;
+    }
+}