/************************************************************************
*
* BlockConverter.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: 2002-2009 by Henrik Just
*
* All Rights Reserved.
*
* Version 1.2 (2009-04-30)
*
*/
package writer2latex.latex;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import writer2latex.latex.util.BeforeAfter;
import writer2latex.latex.util.Context;
//import writer2latex.latex.util.HeadingMap;
import writer2latex.latex.util.StyleMap;
import writer2latex.office.ListStyle;
import writer2latex.office.OfficeReader;
//import writer2latex.office.TableReader;
import writer2latex.office.XMLString;
import writer2latex.util.Misc;
/**
* <p>This class handles basic block content, including the main text body,
* sections, tables, lists, headings and paragraphs.</p>
*/
public class BlockConverter extends ConverterHelper {
public BlockConverter(OfficeReader ofr, LaTeXConfig config, ConverterPalette palette) {
super(ofr,config,palette);
}
public void appendDeclarations(LaTeXDocumentPortion pack, LaTeXDocumentPortion decl) {
// currently do nothing..
}
/** <p> Traverse block text (eg. content of body, section, list item).
* This is traversed in logical order and dedicated handlers take care of
* each block element.</p>
* <p> (Note: As a rule, all handling of block level elements should add a
* newline to the LaTeX document at the end of the block)</p>
* @param node The element containing the block text
* @param ldp the <code>LaTeXDocumentPortion</code> to which
* LaTeX code should be added
* @param oc the current context
*/
public void traverseBlockText(Element node, LaTeXDocumentPortion ldp, Context oc) {
Context ic = (Context) oc.clone();
// The current paragraph block:
StyleMap blockMap = config.getParBlockStyleMap();
String sBlockName = null;
if (node.hasChildNodes()) {
NodeList list = node.getChildNodes();
int nLen = list.getLength();
for (int i = 0; i < nLen; i++) {
Node childNode = list.item(i);
if (childNode.getNodeType() == Node.ELEMENT_NODE) {
Element child = (Element)childNode;
String sTagName = child.getTagName();
// Start/End a paragraph block (not in tables)
if (!ic.isInTable()) {
if (sTagName.equals(XMLString.TEXT_P)) {
String sStyleName = ofr.getParStyles().getDisplayName(child.getAttribute(XMLString.TEXT_STYLE_NAME));
if (sBlockName!=null && !blockMap.isNext(sBlockName,sStyleName)) {
// end current block
String sAfter = blockMap.getAfter(sBlockName);
if (sAfter.length()>0) ldp.append(sAfter).nl();
sBlockName = null;
ic.setVerbatim(false);
}
if (sBlockName==null && blockMap.contains(sStyleName)) {
// start a new block
sBlockName = sStyleName;
String sBefore = blockMap.getBefore(sBlockName);
if (sBefore.length()>0) ldp.append(sBefore).nl();
ic.setVerbatim(blockMap.getVerbatim(sStyleName));
}
}
else if (sBlockName!=null) {
// non-paragraph: end current block
String sAfter = blockMap.getAfter(sBlockName);
if (sAfter.length()>0) ldp.append(sAfter).nl();
sBlockName = null;
ic.setVerbatim(false);
}
}
palette.getFieldCv().flushReferenceMarks(ldp,ic);
palette.getIndexCv().flushIndexMarks(ldp,ic);
palette.getInfo().addDebugInfo(child,ldp);
// Basic block content; handle by this class
if (sTagName.equals(XMLString.TEXT_P)) {
// is this a caption?
String sSequence = ofr.getSequenceName(child);
if (ofr.isFigureSequenceName(sSequence)) {
palette.getDrawCv().handleCaption(child,ldp,ic);
}
else if (ofr.isTableSequenceName(sSequence)) {
// Next node *should* be a table
if (i+1<nLen && Misc.isElement(list.item(i+1),XMLString.TABLE_TABLE)) {
// Found table with caption above
palette.getTableCv().handleTable((Element)list.item(++i),child,true,ldp,ic);
}
else {
// Found lonely caption
palette.getTableCv().handleCaption(child,ldp,ic);
}
}
else {
palette.getParCv().handleParagraph(child,ldp,ic,i==nLen-1);
}
}
else if(sTagName.equals(XMLString.TEXT_H)) {
palette.getHeadingCv().handleHeading(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_LIST)) { // oasis
handleList(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_UNORDERED_LIST)) {
handleList(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_ORDERED_LIST)) {
handleList(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TABLE_TABLE)) {
// Next node *could* be a caption
if (i+1<nLen && Misc.isElement(list.item(i+1),XMLString.TEXT_P) &&
ofr.isTableSequenceName(ofr.getSequenceName((Element)list.item(i+1)))) {
// Found table with caption below
palette.getTableCv().handleTable(child,(Element)list.item(++i),false,ldp,oc);
}
else {
// Found table without caption
palette.getTableCv().handleTable(child,null,false,ldp,oc);
}
}
else if (sTagName.equals(XMLString.TABLE_SUB_TABLE)) {
palette.getTableCv().handleTable(child,null,true,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_SECTION)) {
palette.getSectionCv().handleSection(child,ldp,ic);
}
// Draw elements may appear in block context if they are
// anchored to page
else if (sTagName.startsWith("draw:")) {
palette.getDrawCv().handleDrawElement(child,ldp,ic);
}
// Indexes
else if (sTagName.equals(XMLString.TEXT_TABLE_OF_CONTENT)) {
palette.getIndexCv().handleTOC(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_ILLUSTRATION_INDEX)) {
palette.getIndexCv().handleLOF(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_TABLE_INDEX)) {
palette.getIndexCv().handleLOT(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_OBJECT_INDEX)) {
palette.getIndexCv().handleObjectIndex(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_USER_INDEX)) {
palette.getIndexCv().handleUserIndex(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_ALPHABETICAL_INDEX)) {
palette.getIndexCv().handleAlphabeticalIndex(child,ldp,ic);
}
else if (sTagName.equals(XMLString.TEXT_BIBLIOGRAPHY)) {
palette.getBibCv().handleBibliography(child,ldp,ic);
}
// Sequence declarations appear in the main text body (before the actual content)
else if (sTagName.equals(XMLString.TEXT_SEQUENCE_DECLS)) {
palette.getFieldCv().handleSequenceDecls(child);
}
// other tags are ignored
}
}
}
if (!oc.isInTable() && sBlockName!=null) {
// end current block
String sAfter = blockMap.getAfter(sBlockName);
if (sAfter.length()>0) ldp.append(sAfter).nl();
sBlockName = null;
}
palette.getFieldCv().flushReferenceMarks(ldp,ic);
palette.getIndexCv().flushIndexMarks(ldp,ic);
}
/** <p> Process a list (text:ordered-lst or text:unordered-list tag)</p>
* @param node The element containing the list
* @param ldp the <code>LaTeXDocumentPortion</code> to which
* LaTeX code should be added
* @param oc the current context
*/
public void handleList(Element node, LaTeXDocumentPortion ldp, Context oc) {
// Set up new context
Context ic = (Context) oc.clone();
ic.incListLevel();
if ("true".equals(node.getAttribute(XMLString.TEXT_CONTINUE_NUMBERING))) { ic.setInContinuedList(true); }
// Get the style name, if we don't know it already
if (ic.getListStyleName()==null) {
ic.setListStyleName(node.getAttribute(XMLString.TEXT_STYLE_NAME));
}
// Use the style to determine the type of list
ListStyle style = ofr.getListStyle(ic.getListStyleName());
boolean bOrdered = style!=null && style.isNumber(ic.getListLevel());
// If the list contains headings, ignore it!
if (ic.isIgnoreLists() || listContainsHeadings(node)) {
ic.setIgnoreLists(true);
traverseList(node,ldp,ic);
return;
}
// Apply the style
BeforeAfter ba = new BeforeAfter();
palette.getListSc().applyListStyle(bOrdered,ba,ic);
// Export the list
if (ba.getBefore().length()>0) { ldp.append(ba.getBefore()).nl(); }
traverseList(node,ldp,ic);
if (ba.getAfter().length()>0) { ldp.append(ba.getAfter()).nl(); }
}
/*
* Process the contents of a list
*/
private void traverseList (Element node, LaTeXDocumentPortion ldp, Context oc) {
if (node.hasChildNodes()) {
NodeList list = node.getChildNodes();
int nLen = list.getLength();
for (int i = 0; i < nLen; i++) {
Node child = list.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
String nodeName = child.getNodeName();
palette.getInfo().addDebugInfo((Element)child,ldp);
if (nodeName.equals(XMLString.TEXT_LIST_ITEM)) {
handleListItem((Element)child,ldp,oc);
}
if (nodeName.equals(XMLString.TEXT_LIST_HEADER)) {
handleListItem((Element)child,ldp,oc);
}
}
}
}
}
private void handleListItem(Element node, LaTeXDocumentPortion ldp, Context oc) {
// Are we ignoring this list?
if (oc.isIgnoreLists()) {
traverseBlockText(node,ldp,oc);
return;
}
// Apply the style
BeforeAfter ba = new BeforeAfter();
palette.getListSc().applyListItemStyle(
oc.getListStyleName(), oc.getListLevel(),
node.getNodeName().equals(XMLString.TEXT_LIST_HEADER),
"true".equals(node.getAttribute(XMLString.TEXT_RESTART_NUMBERING)),
Misc.getPosInteger(node.getAttribute(XMLString.TEXT_START_VALUE),1)-1,
ba,oc);
// export the list item (note the special treatment of lists in tables)
if (ba.getBefore().length()>0) {
ldp.append(ba.getBefore());
if (config.formatting()>=LaTeXConfig.CONVERT_MOST && !oc.isInTable()) { ldp.nl(); }
}
traverseBlockText(node,ldp,oc);
if (ba.getAfter().length()>0 || oc.isInTable()) { ldp.append(ba.getAfter()).nl(); }
}
/*
* Helper: Check to see, if this list contains headings
* (in that case we will ignore the list!)
*/
private boolean listContainsHeadings (Node node) {
if (node.hasChildNodes()) {
NodeList nList = node.getChildNodes();
int len = nList.getLength();
for (int i = 0; i < len; i++) {
Node child = nList.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
String nodeName = child.getNodeName();
if (nodeName.equals(XMLString.TEXT_LIST_ITEM)) {
if (listItemContainsHeadings(child)) return true;
}
if (nodeName.equals(XMLString.TEXT_LIST_HEADER)) {
if (listItemContainsHeadings(child)) return true;
}
}
}
}
return false;
}
private boolean listItemContainsHeadings(Node node) {
if (node.hasChildNodes()) {
NodeList nList = node.getChildNodes();
int len = nList.getLength();
for (int i = 0; i < len; i++) {
Node child = nList.item(i);
if (child.getNodeType() == Node.ELEMENT_NODE) {
String nodeName = child.getNodeName();
if(nodeName.equals(XMLString.TEXT_H)) {
return true;
}
if (nodeName.equals(XMLString.TEXT_LIST)) {
if (listContainsHeadings(child)) return true;
}
if (nodeName.equals(XMLString.TEXT_ORDERED_LIST)) {
if (listContainsHeadings(child)) return true;
}
if (nodeName.equals(XMLString.TEXT_UNORDERED_LIST)) {
if (listContainsHeadings(child)) return true;
}
}
}
}
return false;
}
}