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/*
* 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.OfficeReport;
import org.libreoffice.report.pentaho.model.VariablesDeclarationSection;
import org.jfree.report.DataSourceException;
import org.jfree.report.ReportDataFactoryException;
import org.jfree.report.ReportProcessingException;
import org.jfree.report.flow.FlowController;
import org.jfree.report.flow.ReportContext;
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.LayoutControllerFactory;
import org.jfree.report.structure.Node;
/**
* Todo: Document me!
*
* @since 06.03.2007
*/
public class OfficeReportLayoutController extends ElementLayoutController
implements OfficeRepeatingStructureLayoutController
{
private static final int STATE_NOT_STARTED = 0;
private static final int STATE_TEMPLATES = 1;
private static final int STATE_PAGE_HEADER_DONE = 2;
private static final int STATE_PAGE_FOOTER_DONE = 3;
private static final int STATE_SPREADSHEET_PAGE_HEADER_DONE = 4;
private static final int STATE_SPREADSHEET_PAGE_FOOTER_DONE = 5;
private static final int STATE_COLUMN_HEADER_DONE = 6;
private static final int STATE_COLUMN_FOOTER_DONE = 7;
private static final int STATE_INITIAL_VARIABLES_DONE = 8;
private static final int STATE_REPORT_HEADER_DONE = 9;
private static final int STATE_REPORT_BODY_DONE = 10;
private static final int STATE_REPORT_FOOTER_VARIABLES = 11;
private static final int STATE_REPORT_FOOTER_DONE = 12;
private int state;
private VariablesCollection variablesCollection;
/**
* 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);
variablesCollection = new VariablesCollection("auto_report_");
}
/**
* Processes any content in this element. This method is called when the
* processing state is 'OPENED'. The returned layout controller will retain
* the 'OPENED' state as long as there is more content available. Once all
* content has been processed, the returned layout controller should carry a
* 'FINISHED' state.
*
* @param target the report target that receives generated events.
* @return the new layout controller instance representing the new state.
*
* @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
protected LayoutController processContent(final ReportTarget target)
throws DataSourceException, ReportProcessingException,
ReportDataFactoryException
{
final OfficeReport or = (OfficeReport) getElement();
switch (state)
{
case OfficeReportLayoutController.STATE_NOT_STARTED:
{
return delegateToTemplates(OfficeReportLayoutController.STATE_TEMPLATES);
}
case OfficeReportLayoutController.STATE_TEMPLATES:
{
return delegateSection(or.getPageHeader(),
OfficeReportLayoutController.STATE_PAGE_HEADER_DONE);
}
case OfficeReportLayoutController.STATE_PAGE_HEADER_DONE:
{
return delegateSpreadsheetSection(or.getPageHeader(),
OfficeReportLayoutController.STATE_SPREADSHEET_PAGE_HEADER_DONE);
}
case OfficeReportLayoutController.STATE_SPREADSHEET_PAGE_HEADER_DONE:
{
return delegateSection(or.getPageFooter(),
OfficeReportLayoutController.STATE_PAGE_FOOTER_DONE);
}
case OfficeReportLayoutController.STATE_PAGE_FOOTER_DONE:
{
return delegateSection(or.getColumnHeader(),
OfficeReportLayoutController.STATE_COLUMN_HEADER_DONE);
}
case OfficeReportLayoutController.STATE_COLUMN_HEADER_DONE:
{
return delegateSection(or.getColumnFooter(),
OfficeReportLayoutController.STATE_COLUMN_FOOTER_DONE);
}
case OfficeReportLayoutController.STATE_COLUMN_FOOTER_DONE:
{
return delegateSection(new VariablesDeclarationSection(),
OfficeReportLayoutController.STATE_INITIAL_VARIABLES_DONE);
}
case OfficeReportLayoutController.STATE_INITIAL_VARIABLES_DONE:
{
return delegateSection(or.getReportHeader(),
OfficeReportLayoutController.STATE_REPORT_HEADER_DONE);
}
case OfficeReportLayoutController.STATE_REPORT_HEADER_DONE:
{
return delegateSection(or.getBodySection(),
OfficeReportLayoutController.STATE_REPORT_BODY_DONE);
}
case OfficeReportLayoutController.STATE_REPORT_BODY_DONE:
{
return delegateSection(new VariablesDeclarationSection(),
OfficeReportLayoutController.STATE_REPORT_FOOTER_VARIABLES);
}
case OfficeReportLayoutController.STATE_REPORT_FOOTER_VARIABLES:
{
return delegateSection(or.getReportFooter(),
OfficeReportLayoutController.STATE_REPORT_FOOTER_DONE);
}
case OfficeReportLayoutController.STATE_REPORT_FOOTER_DONE:
{
return delegateSpreadsheetSection(or.getPageFooter(),
OfficeReportLayoutController.STATE_SPREADSHEET_PAGE_FOOTER_DONE);
}
case OfficeReportLayoutController.STATE_SPREADSHEET_PAGE_FOOTER_DONE:
{
final OfficeReportLayoutController olc = (OfficeReportLayoutController) clone();
olc.setProcessingState(ElementLayoutController.FINISHING);
return olc;
}
default:
{
throw new IllegalStateException("Invalid processing state encountered.");
}
}
}
private LayoutController delegateSpreadsheetSection(final Node node, final int nextState)
throws DataSourceException, ReportProcessingException, ReportDataFactoryException
{
final OfficeReportLayoutController olc = (OfficeReportLayoutController) clone();
olc.state = nextState;
if (node == null)
{
return olc;
}
final OfficePageSectionLayoutController templateLc = new OfficePageSectionLayoutController();
templateLc.initialize(node, getFlowController(), olc);
return templateLc;
}
private LayoutController delegateToTemplates(final int nextState)
throws ReportProcessingException, ReportDataFactoryException,
DataSourceException
{
final OfficeReportLayoutController olc = (OfficeReportLayoutController) clone();
olc.state = nextState;
final OfficeTableTemplateLayoutController templateLc = new OfficeTableTemplateLayoutController();
templateLc.initialize(getElement(), getFlowController(), olc);
return templateLc;
}
private LayoutController delegateSection(final Node n, final int nextState)
throws ReportProcessingException, ReportDataFactoryException,
DataSourceException
{
final OfficeReportLayoutController olc = (OfficeReportLayoutController) clone();
olc.state = nextState;
if (n == null)
{
return olc;
}
final FlowController flowController = getFlowController();
final ReportContext reportContext = flowController.getReportContext();
final LayoutControllerFactory layoutControllerFactory =
reportContext.getLayoutControllerFactory();
return layoutControllerFactory.create(flowController, n, olc);
}
/**
* 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)
{
final OfficeReportLayoutController derived = (OfficeReportLayoutController) clone();
derived.setFlowController(flowController);
return derived;
}
public boolean isNormalFlowProcessing()
{
return state != OfficeReportLayoutController.STATE_PAGE_HEADER_DONE && state != OfficeReportLayoutController.STATE_PAGE_FOOTER_DONE;
}
public VariablesCollection getVariablesCollection()
{
return variablesCollection;
}
}
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