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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.OfficeToken;
+import com.sun.star.report.pentaho.OfficeNamespaces;
+import com.sun.star.report.pentaho.model.ImageElement;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+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.data.GlobalMasterRow;
+import org.jfree.report.data.ReportDataRow;
+import org.jfree.report.expressions.FormulaExpression;
+import org.jfree.report.flow.FlowController;
+import org.jfree.report.flow.ReportTarget;
+import org.jfree.report.flow.layoutprocessor.LayoutController;
+import org.jfree.report.flow.layoutprocessor.LayoutControllerUtil;
+import org.jfree.report.structure.Element;
+import org.jfree.report.structure.Node;
+import org.jfree.report.structure.Section;
+import org.jfree.report.util.TextUtilities;
+
+import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
+import org.pentaho.reporting.libraries.formula.Formula;
+import org.pentaho.reporting.libraries.formula.lvalues.LValue;
+import org.pentaho.reporting.libraries.formula.parser.ParseException;
+
+/**
+ * Produces an image. The image-structures itself (draw:frame and so on) are not generated here. This element produces a
+ * place-holder element and relies on the output target to compute a sensible position for the element. The report
+ * definition does not give any hints about the size of the image, so we have to derive this from the surrounding
+ * context.
+ *
+ * @author Thomas Morgner
+ * @since 05.03.2007
+ */
+public class ImageElementLayoutController
+ extends AbstractReportElementLayoutController
+{
+
+ private static final Log LOGGER = LogFactory.getLog(ImageElementLayoutController.class);
+ private ImageElementContext context;
+
+ public ImageElementLayoutController()
+ {
+ }
+
+ protected LayoutController delegateContentGeneration(final ReportTarget target)
+ throws ReportProcessingException, ReportDataFactoryException,
+ DataSourceException
+ {
+ final ImageElement imageElement = (ImageElement) getNode();
+ final FormulaExpression formulaExpression = imageElement.getFormula();
+ if (formulaExpression == null)
+ {
+ // A static image is easy. At least at this level. Dont ask about the weird things we have to do in the
+ // output targets ...
+ final String linkTarget = imageElement.getImageData();
+ generateImage(target, linkTarget, imageElement.getScaleMode(), imageElement.isPreserveIRI());
+ }
+ else
+ {
+ final Object value =
+ LayoutControllerUtil.evaluateExpression(getFlowController(), imageElement, formulaExpression);
+ generateImage(target, value, imageElement.getScaleMode(), imageElement.isPreserveIRI());
+ }
+ return join(getFlowController());
+ }
+
+ private void generateImage(final ReportTarget target,
+ final Object linkTarget,
+ final String scale,
+ final boolean preserveIri)
+ throws ReportProcessingException, DataSourceException
+ {
+ if (linkTarget == null)
+ {
+ return;
+ }
+
+ final AttributeMap image = new AttributeMap();
+ image.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, Element.NAMESPACE_ATTRIBUTE, JFreeReportInfo.REPORT_NAMESPACE);
+ image.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, Element.TYPE_ATTRIBUTE, OfficeToken.IMAGE);
+ image.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, OfficeToken.SCALE, scale);
+ image.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, OfficeToken.PRESERVE_IRI, String.valueOf(preserveIri));
+ image.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, "image-context", createContext());
+ image.setAttribute(JFreeReportInfo.REPORT_NAMESPACE, OfficeToken.IMAGE_DATA, linkTarget);
+ target.startElement(image);
+ target.endElement(image);
+ }
+
+ protected ImageElementContext createContext()
+ {
+ if (context == null)
+ {
+
+ // Step 1: Find the parent cell.
+ final LayoutController cellController = findParentCell();
+ if (cellController == null)
+ {
+ LOGGER.warn("Image is not contained in a table. Unable to calculate the image-size.");
+ return null;
+ }
+ final Element tableCell = (Element) cellController.getNode();
+ final int rowSpan = TextUtilities.parseInt((String) tableCell.getAttribute(OfficeNamespaces.TABLE_NS, "number-rows-spanned"), 1);
+ final int colSpan = TextUtilities.parseInt((String) tableCell.getAttribute(OfficeNamespaces.TABLE_NS, "number-columns-spanned"), 1);
+ if (rowSpan < 1 || colSpan < 1)
+ {
+ LOGGER.warn("Rowspan or colspan for image-size calculation was invalid.");
+ return null;
+ }
+
+ final LayoutController rowController = cellController.getParent();
+ if (rowController == null)
+ {
+ LOGGER.warn("Table-Cell has no parent. Unable to calculate the image-size.");
+ return null;
+ }
+ final Section tableRow = (Section) rowController.getNode();
+ // we are now making the assumption, that the row is a section, that contains the table-cell.
+ // This breaks the ability to return nodes or to construct reports on the fly, but the OO-report format
+ // is weird anyway and wont support such advanced techniques for the next few centuries ..
+ final int columnPos = findNodeInSection(tableRow, tableCell, OfficeToken.COVERED_TABLE_CELL);
+ if (columnPos == -1)
+ {
+ LOGGER.warn("Table-Cell is not a direct child of the table-row. Unable to calculate the image-size.");
+ return null;
+ }
+
+ final LayoutController tableController = rowController.getParent();
+ if (tableController == null)
+ {
+ LOGGER.warn("Table-Row has no Table. Unable to calculate the image-size.");
+ return null;
+ }
+
+ final Section table = (Section) tableController.getNode();
+ // ok, we got a table, so as next we have to search for the columns now.
+ final Section columns = (Section) table.findFirstChild(OfficeNamespaces.TABLE_NS, OfficeToken.TABLE_COLUMNS);
+ if (columns.getNodeCount() <= columnPos + colSpan)
+ {
+ // the colspan is to large. The table definition is therefore invalid. We do not try to fix this.
+ LOGGER.warn(
+ "The Table's defined columns do not match the col-span or col-position. Unable to calculate the image-size.");
+ return null;
+ }
+
+ final ImageElementContext context = new ImageElementContext(colSpan, rowSpan);
+ addColumnStyles(context, columns, columnPos, colSpan);
+ // finally search the styles for the row now.
+ final int rowPos = findNodeInSection(table, tableRow, null);
+ if (rowPos == -1)
+ {
+ LOGGER.warn("Table-Cell is not a direct child of the table-row. Unable to calculate the image-size.");
+ return null;
+ }
+
+ addRowStyles(context, table, rowPos, rowSpan);
+ this.context = context;
+ }
+ return this.context;
+ }
+
+ private int findNodeInSection(final Section tableRow,
+ final Element tableCell,
+ final String secondType)
+ {
+ int retval = 0;
+ final Node[] nodes = tableRow.getNodeArray();
+ final String namespace = tableCell.getNamespace();
+ final String type = tableCell.getType();
+ for (final Node node : nodes)
+ {
+ if (!(node instanceof Element))
+ {
+ continue;
+ }
+ final Element child = (Element) node;
+ /*
+ if (! OfficeToken.COVERED_TABLE_CELL.equals(child.getType()) &&
+ (ObjectUtilities.equal(child.getNamespace(), namespace) == false ||
+ ObjectUtilities.equal(child.getType(), type) == false))
+ */
+ if (!ObjectUtilities.equal(child.getNamespace(), namespace) || (!ObjectUtilities.equal(child.getType(), type) && (secondType == null || !ObjectUtilities.equal(child.getType(), secondType))))
+ {
+ continue;
+ }
+
+ if (node == tableCell)
+ {
+ return retval;
+ }
+ retval += 1;
+ }
+ return -1;
+ }
+
+ private LayoutController findParentCell()
+ {
+ LayoutController parent = getParent();
+ while (parent != null)
+ {
+ final Object node = parent.getNode();
+ if (node instanceof Element)
+ {
+ final Element element = (Element) node;
+ if (OfficeNamespaces.TABLE_NS.equals(element.getNamespace()) && "table-cell".equals(element.getType()))
+ {
+ return parent;
+ }
+ }
+ parent = parent.getParent();
+ }
+ return null;
+ }
+
+ protected boolean isValueChanged()
+ {
+ final ImageElement imageElement = (ImageElement) getNode();
+ final FormulaExpression formulaExpression = imageElement.getFormula();
+ if (formulaExpression == null)
+ {
+ final FlowController controller = getFlowController();
+ final GlobalMasterRow masterRow = controller.getMasterRow();
+ final ReportDataRow reportDataRow = masterRow.getReportDataRow();
+ return reportDataRow.getCursor() == 0;
+ }
+
+ try
+ {
+ final Formula formula = formulaExpression.getCompiledFormula();
+ final LValue lValue = formula.getRootReference();
+ return isReferenceChanged(lValue);
+ }
+ catch (ParseException e)
+ {
+ return false;
+ }
+ }
+
+ void addColumnStyles(final ImageElementContext context, final Section columns, final int columnPos, final int colSpan)
+ {
+ final Node[] columnDefs = columns.getNodeArray();
+ int columnCounter = 0;
+ for (Node columnDef : columnDefs)
+ {
+ final Element column = (Element) columnDef;
+
+ if (!ObjectUtilities.equal(column.getNamespace(), OfficeNamespaces.TABLE_NS) || !ObjectUtilities.equal(column.getType(), OfficeToken.TABLE_COLUMN))
+ {
+ continue;
+ }
+ if (columnCounter >= columnPos)
+ {
+ final String colStyle = (String) column.getAttribute(OfficeNamespaces.TABLE_NS, OfficeToken.STYLE_NAME);
+ context.setColStyle(columnCounter - columnPos, colStyle);
+ }
+
+ columnCounter += 1;
+
+ if (columnCounter >= (columnPos + colSpan))
+ {
+ break;
+ }
+
+ }
+ }
+
+ void addRowStyles(final ImageElementContext context, final Section table, final int rowPos, final int rowSpan)
+ {
+ final Node[] rows = table.getNodeArray();
+ int rowCounter = 0;
+ for (Node row1 : rows)
+ {
+ final Element row = (Element) row1;
+
+ if (!ObjectUtilities.equal(row.getNamespace(), OfficeNamespaces.TABLE_NS) || !ObjectUtilities.equal(row.getType(), OfficeToken.TABLE_ROW))
+ {
+ continue;
+ }
+ if (rowCounter >= rowPos)
+ {
+ final String rowStyle = (String) row.getAttribute(OfficeNamespaces.TABLE_NS, OfficeToken.STYLE_NAME);
+ context.setRowStyle(rowCounter - rowPos, rowStyle);
+ }
+
+ rowCounter += 1;
+
+ if (rowCounter >= (rowPos + rowSpan))
+ {
+ break;
+ }
+ }
+ }
+}