/************************************************************************
*
* TableConverter.java
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Copyright: 2002-2011 by Henrik Just
*
* All Rights Reserved.
*
* Version 1.2 (2011-04-20)
*
*/
package writer2latex.latex;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import writer2latex.util.*;
import writer2latex.office.*;
import writer2latex.latex.util.BeforeAfter;
import writer2latex.latex.util.Context;
enum RowType {
FIRST_HEAD, HEAD, BODY, FOOT, LAST_FOOT;
}
/** <p>This class converts OpenDocument tables to LaTeX.</p>
* <p>The following LaTeX packages are used; some of them are optional</p>
* <p>array.sty, longtable.sty, supertabular.sty, tabulary.sty, hhline.sty,
* colortbl.sty.</p>
* <p>Options:</p>
* <ul>
* <li>use_longtable = true|false</li>
* <li>use_supertabular = true|false</li>
* <li>use_tabulary = true|false</li>
* <li>use_colortbl = true|false</li>
* <li>float_tables = true|false</li>
* <li>float_options = <string></li>
* <li>table_content = accept|ignore|warning|error</li>
* </ul>
*
*/
public class TableConverter extends ConverterHelper {
private boolean bNeedLongtable = false;
private boolean bNeedSupertabular = false;
private boolean bNeedTabulary = false;
private boolean bNeedColortbl = false;
private boolean bContainsTables = false;
/** <p>Constructs a new <code>TableConverter</code>.</p>
*/
public TableConverter(OfficeReader ofr, LaTeXConfig config,
ConverterPalette palette) {
super(ofr,config,palette);
}
public void appendDeclarations(LaTeXDocumentPortion pack, LaTeXDocumentPortion decl) {
pack.append("\\usepackage{array}").nl(); // TODO: Make this optional
if (bNeedLongtable) { pack.append("\\usepackage{longtable}").nl(); }
if (bNeedSupertabular) { pack.append("\\usepackage{supertabular}").nl(); }
if (bNeedTabulary) { pack.append("\\usepackage{tabulary}").nl(); }
pack.append("\\usepackage{hhline}").nl(); // TODO: Make this optional
if (bNeedColortbl) { pack.append("\\usepackage{colortbl}").nl(); }
// Set padding for table cells (1mm is default in OOo!)
// For vertical padding we can only specify a relative size
if (bContainsTables) {
decl.append("\\setlength\\tabcolsep{1mm}").nl();
decl.append("\\renewcommand\\arraystretch{1.3}").nl();
}
}
// Export a lonely table caption
public void handleCaption(Element node, LaTeXDocumentPortion ldp, Context oc) {
ldp.append("\\captionof{table}");
palette.getCaptionCv().handleCaptionBody(node,ldp,oc,true);
}
/** <p> Process a table (table:table or table:sub-table tag)</p>
* @param node The element containing the table
* @param ldp the <code>LaTeXDocumentPortion</code> to which
* LaTeX code should be added
* @param oc the current context
*/
public void handleTable(Element node, Element caption, boolean bCaptionAbove,
LaTeXDocumentPortion ldp, Context oc) {
// Export table, if allowed by the configuration
switch (config.tableContent()) {
case LaTeXConfig.ACCEPT:
new SingleTableConverter().handleTable(node,caption,bCaptionAbove,ldp,oc);
bContainsTables = true;
break;
case LaTeXConfig.IGNORE:
// Ignore table silently
break;
case LaTeXConfig.WARNING:
System.err.println("Warning: Tables are not allowed");
break;
case LaTeXConfig.ERROR:
ldp.append("% Error in document: A table was ignored");
}
}
// Inner class to convert a single table
private class SingleTableConverter {
private TableReader table;
private TableFormatter formatter;
private Element caption;
private boolean bCaptionAbove;
private BeforeAfter baTable;
private BeforeAfter baTableAlign;
private RowType[] rowTypes;
// Return the paragraph style of the first paragraph/heading within this block text
private String getFirstParStyle(Element node) {
Node child = node.getFirstChild();
while (child!=null) {
if (Misc.isElement(child, XMLString.TEXT_P) || Misc.isElement(child, XMLString.TEXT_H)) {
String sStyleName = Misc.getAttribute(child, XMLString.TEXT_STYLE_NAME);
if (sStyleName!=null) {
StyleWithProperties style = ofr.getParStyle(sStyleName);
if (style!=null) {
if (style.isAutomatic()) {
sStyleName = style.getParentName();
}
return ofr.getParStyles().getDisplayName(sStyleName);
}
}
return null;
}
else if (OfficeReader.isTextElement(child)) {
return getFirstParStyle((Element)child);
}
child = child.getNextSibling();
}
return null;
}
private boolean hasRowType(RowType test) {
for (RowType type : rowTypes) {
if (type==test) { return true; }
}
return false;
}
private void handleTable(Element node, Element caption, boolean bCaptionAbove,
LaTeXDocumentPortion ldp, Context oc) {
// Store the caption
this.caption = caption;
this.bCaptionAbove = bCaptionAbove;
// Read the table
table = ofr.getTableReader(node);
if (palette.getMathCv().handleDisplayEquation(table,ldp)) { return; }
// Get formatter and update flags according to formatter
formatter = new TableFormatter(ofr,config,palette,table,!oc.isInMulticols(),oc.isInTable());
bContainsTables = true;
bNeedLongtable |= formatter.isLongtable();
bNeedSupertabular |= formatter.isSupertabular();
bNeedTabulary |= formatter.isTabulary();
bNeedColortbl |= formatter.isColortbl();
// Update the context
Context ic = (Context) oc.clone();
ic.setInTable(true);
ic.setInSimpleTable(formatter.isSimple());
// Never allow footnotes in tables
// (longtable.sty *does* allow footnotes in body, but not in head -
// only consistent solution is to disallow all footnotes)
ic.setNoFootnotes(true);
// Get table declarations
baTable = new BeforeAfter();
baTableAlign = new BeforeAfter();
formatter.applyTableStyle(baTable,baTableAlign,config.floatTables() && !ic.isInFrame() && !table.isSubTable());
// Identify the row types
rowTypes = new RowType[table.getRowCount()];
for (int nRow=0; nRow<table.getRowCount(); nRow++) {
// First collect the row type as defined in the document
if (nRow<table.getFirstBodyRow()) {
rowTypes[nRow] = RowType.HEAD;
}
else {
rowTypes[nRow] = RowType.BODY;
}
if (formatter.isLongtable() || formatter.isSupertabular()) {
// Then override with user defined row types where applicable
// (but only for multipage tables)
// The row type is determined from the first paragraph in the first cell
String sStyleName = getFirstParStyle(table.getCell(nRow, 0));
if (sStyleName!=null) {
if (sStyleName.equals(config.getTableFirstHeadStyle())) {
rowTypes[nRow] = RowType.FIRST_HEAD;
}
else if (sStyleName.equals(config.getTableHeadStyle())) {
rowTypes[nRow] = RowType.HEAD;
}
else if (sStyleName.equals(config.getTableFootStyle())) {
rowTypes[nRow] = RowType.FOOT;
}
else if (sStyleName.equals(config.getTableLastFootStyle())) {
rowTypes[nRow] = RowType.LAST_FOOT;
}
}
}
}
// Convert table
if (formatter.isSupertabular()) {
handleSupertabular(ldp,ic);
}
else if (formatter.isLongtable()) {
handleLongtable(ldp,ic);
}
else if (config.floatTables() && !ic.isInFrame() && !table.isSubTable()) {
handleTableFloat(ldp,ic);
}
else {
handleTabular(ldp,ic);
}
// Insert any pending footnotes
palette.getNoteCv().flushFootnotes(ldp,oc);
}
private void handleSupertabular(LaTeXDocumentPortion ldp, Context oc) {
ldp.append(baTableAlign.getBefore());
// Caption
if (caption!=null) {
handleCaption(bCaptionAbove ? "\\topcaption" : "\\bottomcaption", ldp, oc);
}
// Table head
ldp.append("\\tablefirsthead{");
if (hasRowType(RowType.FIRST_HEAD)) {
handleRows(ldp,oc,RowType.FIRST_HEAD,true,false);
}
else {
handleRows(ldp,oc,RowType.HEAD,true,false);
}
ldp.append("}\n");
ldp.append("\\tablehead{");
handleRows(ldp,oc,RowType.HEAD,true,false);
ldp.append("}\n");
// Table foot
ldp.append("\\tabletail{");
handleRows(ldp,oc,RowType.FOOT,true,true);
ldp.append("}\n");
ldp.append("\\tablelasttail{");
if (hasRowType(RowType.LAST_FOOT)) {
handleRows(ldp,oc,RowType.LAST_FOOT,true,true);
}
else {
handleRows(ldp,oc,RowType.FOOT,true,true);
}
ldp.append("}\n");
// The table body
handleHyperTarget(ldp);
ldp.append(baTable.getBefore()).nl();
handleRows(ldp,oc,RowType.BODY,true,!hasRowType(RowType.FOOT) && !hasRowType(RowType.LAST_FOOT));
ldp.nl().append(baTable.getAfter()).nl();
ldp.append(baTableAlign.getAfter());
}
private void handleLongtable(LaTeXDocumentPortion ldp, Context oc) {
handleHyperTarget(ldp);
ldp.append(baTable.getBefore()).nl();
// First head
if (caption!=null && bCaptionAbove) {
// If there's a caption above, we must use \endfirsthead
// and have to repeat the head if there's no first head
handleCaption("\\caption",ldp,oc);
ldp.append("\\\\").nl();
if (hasRowType(RowType.FIRST_HEAD)) {
handleRows(ldp,oc,RowType.FIRST_HEAD,true,true);
}
else {
handleRows(ldp,oc,RowType.HEAD,true,true);
}
ldp.nl().append("\\endfirsthead").nl();
}
else if (hasRowType(RowType.FIRST_HEAD)) {
// Otherwise we only need it if the table contains a first head
handleRows(ldp,oc,RowType.FIRST_HEAD,true,true);
ldp.nl().append("\\endfirsthead").nl();
}
// Head
handleRows(ldp,oc,RowType.HEAD,true,true);
ldp.nl().append("\\endhead").nl();
// Foot
handleRows(ldp,oc,RowType.FOOT,false,true);
ldp.nl().append("\\endfoot").nl();
// Last foot
if (caption!=null && !bCaptionAbove) {
// If there's a caption below, we must use \endlastfoot
// and have to repeat the foot if there's no last foot
if (hasRowType(RowType.LAST_FOOT)) {
handleRows(ldp,oc,RowType.LAST_FOOT,false,true);
ldp.nl();
}
else if (hasRowType(RowType.FOOT)){
handleRows(ldp,oc,RowType.FOOT,false,true);
ldp.nl();
}
handleCaption("\\caption",ldp,oc);
ldp.append("\\endlastfoot").nl();
}
else if (hasRowType(RowType.LAST_FOOT)) {
// Otherwise we only need it if the table contains a last foot
handleRows(ldp,oc,RowType.LAST_FOOT,false,true);
ldp.nl().append("\\endlastfoot").nl();
}
// Body
handleRows(ldp,oc,RowType.BODY,!hasRowType(RowType.HEAD) && !hasRowType(RowType.FIRST_HEAD),true);
ldp.nl().append(baTable.getAfter()).nl();
}
private void handleTableFloat(LaTeXDocumentPortion ldp, Context oc) {
ldp.append("\\begin{table}");
if (config.getFloatOptions().length()>0) {
ldp.append("[").append(config.getFloatOptions()).append("]");
}
ldp.nl();
ldp.append(baTableAlign.getBefore());
// Caption above
if (caption!=null && bCaptionAbove) {
handleCaption("\\caption",ldp,oc);
}
// The table
handleHyperTarget(ldp);
ldp.append(baTable.getBefore()).nl();
handleRows(ldp,oc,RowType.HEAD,true,true);
ldp.nl();
handleRows(ldp,oc,RowType.BODY,!hasRowType(RowType.HEAD),true);
ldp.append(baTable.getAfter()).nl();
// Caption below
if (caption!=null && !bCaptionAbove) {
handleCaption("\\caption",ldp,oc);
}
ldp.nl().append(baTableAlign.getAfter());
ldp.append("\\end{table}").nl();
}
private void handleTabular(LaTeXDocumentPortion ldp, Context oc) {
ldp.append(baTableAlign.getBefore());
// Caption above
if (caption!=null && bCaptionAbove) {
TableConverter.this.handleCaption(caption,ldp,oc);
}
// The table
handleHyperTarget(ldp);
ldp.append(baTable.getBefore()).nl();
handleRows(ldp,oc,RowType.HEAD,true,true);
ldp.nl();
handleRows(ldp,oc,RowType.BODY,!hasRowType(RowType.HEAD),true);
ldp.nl().append(baTable.getAfter()).nl();
// Caption below
if (caption!=null && !bCaptionAbove) {
TableConverter.this.handleCaption(caption,ldp,oc);
}
ldp.append(baTableAlign.getAfter());
}
private void handleCaption(String sCommand, LaTeXDocumentPortion ldp, Context oc) {
ldp.append(sCommand);
palette.getCaptionCv().handleCaptionBody(caption,ldp,oc,false);
}
private void handleHyperTarget(LaTeXDocumentPortion ldp) {
// We may need a hyperlink target
if (!table.isSubTable()) {
palette.getFieldCv().addTarget(table.getTableName(),"|table",ldp);
}
}
private void handleRows(LaTeXDocumentPortion ldp, Context oc, RowType rowType, boolean bLineBefore, boolean bLineAfter) {
int nRowCount = table.getRowCount();
int nColCount = table.getColCount();
boolean bFirst = true;
int nPreviousRow = -1;
for (int nRow=0; nRow<nRowCount; nRow++) {
if (rowTypes[nRow]==rowType) {
// Add interrow material from previous row, if any
if (nPreviousRow>-1) {
ldp.append(formatter.getInterrowMaterial(nPreviousRow+1)).nl();
}
nPreviousRow = nRow;
// If it's the first row, add top interrow material
if (bFirst && bLineBefore) {
String sInter = formatter.getInterrowMaterial(nRow);
if (sInter.length()>0) { ldp.append(sInter).nl(); }
bFirst=false;
}
// Export columns in this row
Context icRow = (Context) oc.clone();
BeforeAfter baRow = new BeforeAfter();
formatter.applyRowStyle(nRow,baRow,icRow);
if (!baRow.isEmpty()) {
ldp.append(baRow.getBefore());
if (!formatter.isSimple()) { ldp.nl(); }
}
int nCol = 0;
while (nCol<nColCount) {
Element cell = (Element) table.getCell(nRow,nCol);
if (cell!=null) {
if (XMLString.TABLE_TABLE_CELL.equals(cell.getNodeName())) {
Context icCell = (Context) icRow.clone();
BeforeAfter baCell = new BeforeAfter();
formatter.applyCellStyle(nRow,nCol,baCell,icCell);
ldp.append(baCell.getBefore());
if (nCol==nColCount-1) { icCell.setInLastTableColumn(true); }
palette.getBlockCv().traverseBlockText(cell,ldp,icCell);
ldp.append(baCell.getAfter());
}
// Otherwise ignore; the cell is covered by a \multicolumn entry.
// (table:covered-table-cell)
int nColSpan = Misc.getPosInteger(cell.getAttribute(
XMLString.TABLE_NUMBER_COLUMNS_SPANNED),1);
if (nCol+nColSpan<nColCount) {
if (formatter.isSimple()) { ldp.append(" & "); }
else { ldp.append(" &").nl(); }
}
nCol+=nColSpan;
}
else { // Non-existing cell, ignore (assuming it is a trailing cell)
nCol++;
}
}
ldp.append("\\\\");
}
}
// Add interrow material from last row, if required
if (nPreviousRow>-1 && bLineAfter) {
ldp.append(formatter.getInterrowMaterial(nPreviousRow+1));
}
}
}
}