package org.madore.damlengine;

import java.util.ArrayList;
import java.util.regex.Pattern;
import org.w3c.dom.*;

public final class TodoSubtitleElement extends TodoDefaultElement {

    public static class Factory extends TodoElement.Factory {
	@Override
	public TodoSubtitleElement newItem(Element node,
					   Context ctx,
					   TodoItem caller) {
	    return new TodoSubtitleElement(node, ctx, caller);
	}
    }

    public TodoSubtitleElement(Element node,
			       Context ctx,
			       TodoItem caller) {
	super(node, ctx, caller);
    }

    @Override
    public void handleNodeOnly() {
	if ( ctx.gc.subtitle != null )
	    throw new IllegalArgumentException("attempting to redefine subtitle");
	ctx.gc.subtitle = ctx.doc.createDocumentFragment();
	ctx.gc.subtitleStr = node.getTextContent();
	ctx.gc.subtitleLang = LangHelper.getLangRec(node);
	ArrayList<Node> childList = getChildList(node);
	for ( Node child : childList ) {
	    ctx.gc.subtitle.appendChild(child);
	}
	Node ws = node.getNextSibling();
	if ( ws != null && ( ws.getNodeType() == Node.TEXT_NODE
	       || ws.getNodeType() == Node.CDATA_SECTION_NODE )
	     && Pattern.matches("^\\s*$",((CharacterData)ws).getData()) )
	    node.getParentNode().removeChild(ws);
	node.getParentNode().removeChild(node);
    }

}