package org.madore.damlengine;

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

public final class TodoEntryTitleElement extends TodoDefaultElement {

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

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

    @Override
    public void handleNodeOnly() {
	if ( ctx.ent == null )
	    throw new IllegalStateException("entry context not defined in entry title element");
	Element h2 = ctx.doc.createElementNS(DamlEngine.XHTML_NS, "h2");
	String explicitLang = LangHelper.getLangNorec(node);
	if ( explicitLang != null )
	    LangHelper.setLangNorec(h2, explicitLang);
	ctx.ent.headerNode.appendChild(h2);
	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);
	h2.setAttributeNS(null, "class", "weblog-entry-title entry-title");
	ArrayList<Node> childList = getChildList(this.node);
	ArrayList<TodoElement> toProcess = new ArrayList<TodoElement>(childList.size());
	for ( Node child : childList ) {
	    h2.appendChild(child);
	    if ( child.getNodeType() == Node.ELEMENT_NODE ) {
		TodoElement it
		    = TodoElement.getTodoElement((Element)child, this.ctx, this);
		toProcess.add(it);
	    }
	}
	this.ownerDeque.registerAtStart(toProcess);
    }

}