package net.java.textilej.parser.markup.textile.block;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import net.java.textilej.parser.Attributes;
import net.java.textilej.parser.DocumentBuilder.BlockType;
import net.java.textilej.parser.markup.Block;
import net.java.textilej.parser.markup.textile.TextileDialect;
import net.java.textilej.parser.outline.OutlineItem;
import net.java.textilej.parser.outline.OutlineParser;
public class TableOfContentsBlock extends Block {
static final Pattern startPattern = Pattern.compile("\\s*\\{toc(?::([^\\}]+))?\\}\\s*");
private int blockLineNumber = 0;
private String style = "none";
private int maxLevel = Integer.MAX_VALUE;
private Matcher matcher;
@Override
public int processLineContent(String line,int offset) {
if (blockLineNumber++ > 0) {
setClosed(true);
return 0;
}
if (!getDialect().isFilterGenerativeContents()) {
String options = matcher.group(1);
if (options != null) {
String[] optionPairs = options.split("\\s*\\|\\s*");
for (String optionPair: optionPairs) {
String[] keyValue = optionPair.split("\\s*=\\s*");
if (keyValue.length == 2) {
String key = keyValue[0].trim();
String value = keyValue[1].trim();
if (key.equals("style")) {
setStyle(value);
} else if (key.equals("maxLevel")) {
try {
maxLevel = Integer.parseInt(value);
} catch (NumberFormatException e) {}
}
}
}
}
OutlineParser outlineParser = new OutlineParser(new TextileDialect());
OutlineItem rootItem = outlineParser.parse(state.getMarkupContent());
emitToc(rootItem);
}
return -1;
}
private void emitToc(OutlineItem item) {
if (item.getChildren().isEmpty()) {
return;
}
if ((item.getLevel()+1) > maxLevel) {
return;
}
Attributes nullAttributes = new Attributes();
builder.beginBlock(BlockType.NUMERIC_LIST, new Attributes(null,null,"list-style: "+style+";",null));
for (OutlineItem child: item.getChildren()) {
builder.beginBlock(BlockType.LIST_ITEM, nullAttributes);
builder.link('#'+child.getId(), child.getLabel());
emitToc(child);
builder.endBlock();
}
builder.endBlock();
}
@Override
public boolean canStart(String line,int lineOffset) {
if (lineOffset == 0) {
matcher = startPattern.matcher(line);
return matcher.matches();
} else {
matcher = null;
return false;
}
}
public String getStyle() {
return style;
}
public void setStyle(String style) {
this.style = style;
}
public int getMaxLevel() {
return maxLevel;
}
public void setMaxLevel(int maxLevel) {
this.maxLevel = maxLevel;
}
}