package org.madore.damlengine;

import java.util.Map;
import java.util.HashMap;
import org.w3c.dom.Element;

public abstract class TodoElement extends TodoItem {

    public static abstract class Factory {
	public abstract TodoElement newItem(Element node,
					    Context ctx,
					    TodoItem caller);
    }

    public static class TitleDisambiguationFactory extends Factory {
	Factory mainTitleFactory = new TodoTitleElement.Factory();
	Factory entryTitleFactory = new TodoEntryTitleElement.Factory();
	public TodoElement newItem(Element node,
				   Context ctx,
				   TodoItem caller) {
	    if ( caller instanceof TodoDamlElement )
		return mainTitleFactory.newItem(node, ctx, caller);
	    else if ( caller instanceof TodoEntryElement )
		return entryTitleFactory.newItem(node, ctx, caller);
	    else
		throw new IllegalArgumentException("title element can only be child of daml or entry elements");
	}
    }

    protected final static Map<String,Factory> damlFactories;
    protected final static Factory defaultFactory;

    static {
	damlFactories = new HashMap<String,Factory>();
	defaultFactory = new TodoDefaultElement.Factory();
	damlFactories.put("daml", new TodoDamlElement.Factory());
	damlFactories.put("body", new TodoBodyElement.Factory());
	damlFactories.put("weblog", new TodoWeblogElement.Factory());
	damlFactories.put("entry", new TodoEntryElement.Factory());
	damlFactories.put("title", new TitleDisambiguationFactory());
	damlFactories.put("subtitle", new TodoSubtitleElement.Factory());
	damlFactories.put("translation", new TodoTranslationElement.Factory());
	damlFactories.put("meta-description", new TodoMetaElement.Factory(TodoMetaElement.Type.DESCRIPTION));
	damlFactories.put("meta-keywords", new TodoMetaElement.Factory(TodoMetaElement.Type.KEYWORDS));
	damlFactories.put("date-extra", new TodoDateExtraElement.Factory());
	damlFactories.put("email-despammed", new TodoEmailDespammedElement.Factory());
	damlFactories.put("email-at", new TodoEmailAtOrDotElement.Factory(TodoEmailAtOrDotElement.Type.AT));
	damlFactories.put("email-dot", new TodoEmailAtOrDotElement.Factory(TodoEmailAtOrDotElement.Type.DOT));
	damlFactories.put("extra-style", new TodoExtraStyleOrScriptElement.Factory(TodoStyleOrScript.Type.STYLE));
	damlFactories.put("extra-script", new TodoExtraStyleOrScriptElement.Factory(TodoStyleOrScript.Type.SCRIPT));
	damlFactories.put("smiley-smile", new TodoSmileyElement.Factory(TodoSmileyElement.Type.SMILE));
	damlFactories.put("smiley-wink", new TodoSmileyElement.Factory(TodoSmileyElement.Type.WINK));
	damlFactories.put("smiley-surprised", new TodoSmileyElement.Factory(TodoSmileyElement.Type.SURPRISED));
	damlFactories.put("smiley-sad", new TodoSmileyElement.Factory(TodoSmileyElement.Type.SAD));
	damlFactories.put("smiley-cool", new TodoSmileyElement.Factory(TodoSmileyElement.Type.COOL));
	damlFactories.put("smiley-biggrin", new TodoSmileyElement.Factory(TodoSmileyElement.Type.BIGGRIN));
	damlFactories.put("smiley-confused", new TodoSmileyElement.Factory(TodoSmileyElement.Type.CONFUSED));
	damlFactories.put("smiley-crazy", new TodoSmileyElement.Factory(TodoSmileyElement.Type.CRAZY));
	damlFactories.put("smiley-neutral", new TodoSmileyElement.Factory(TodoSmileyElement.Type.NEUTRAL));
	damlFactories.put("smiley-evilgrin", new TodoSmileyElement.Factory(TodoSmileyElement.Type.EVILGRIN));
	damlFactories.put("smiley-cry", new TodoSmileyElement.Factory(TodoSmileyElement.Type.CRY));
	damlFactories.put("smiley-evil", new TodoSmileyElement.Factory(TodoSmileyElement.Type.EVIL));
	damlFactories.put("img-a", new TodoImgAElement.Factory());
	damlFactories.put("weblog-select", new TodoWeblogSelectElement.Factory());
	damlFactories.put("weblog-index-select", new TodoWeblogIndexSelectElement.Factory());
	damlFactories.put("weblog-selection-recent-count", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.RECENT_COUNT));
	damlFactories.put("weblog-selection-month-numeric", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.MONTH_NUMERIC));
	damlFactories.put("weblog-selection-month-literal", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.MONTH_LITERAL));
	damlFactories.put("weblog-selection-cat-code", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.CATEGORY_CODE));
	damlFactories.put("weblog-selection-cat-name", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.CATEGORY_NAME));
	damlFactories.put("weblog-selection-single-number", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.SINGLE_NUMBER));
	damlFactories.put("weblog-selection-single-title", new TodoWeblogSelectionElement.Factory(TodoWeblogSelectionElement.Type.SINGLE_TITLE));
	damlFactories.put("weblog-months-calendar", new TodoWeblogMonthsCalendar.Factory());
	damlFactories.put("cut-here", new TodoCutHere.Factory());
    }

    protected final static Factory killAFactory
	= new TodoKillAElement.Factory();

    protected final static Factory killAcronymFactory
	= new TodoKillAcronymElement.Factory();

    protected final static Factory styleFactory
	= new TodoStyleOrScript.Factory(TodoStyleOrScript.Type.STYLE);

    protected final static Factory scriptFactory
	= new TodoStyleOrScript.Factory(TodoStyleOrScript.Type.SCRIPT);

    protected final Element node;

    public TodoElement(Element node,
		       Context ctx,
		       TodoItem caller) {
	super(ctx, caller);
	this.node = node;
    }

    public static TodoElement getTodoElement(Element node,
					     Context ctx,
					     TodoItem caller) {
	Factory factory = null;
	String nsuri = node.getNamespaceURI();
	if ( nsuri != null && nsuri.equals(DamlEngine.DAML_NS) )
	    factory = damlFactories.get(node.getLocalName());
	else if ( nsuri != null && nsuri.equals(DamlEngine.XHTML_NS) ) {
	    if ( ctx.killA && node.getLocalName().equals("a") )
		factory = killAFactory;
	    else if ( node.getLocalName().equals("acronym") )
	     	factory = killAcronymFactory;
	    else if ( node.getLocalName().equals("style") )
		factory = styleFactory;
	    else if ( node.getLocalName().equals("script") )
		factory = scriptFactory;
	}
	if ( factory == null )
	    factory = defaultFactory;
	return factory.newItem(node, ctx, caller);
    }

}