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package Torello.HTML.NodeSearch.SearchLoops.TagNodes;

import java.util.Vector;

import Torello.HTML.*;
import Torello.Java.LV;

public class TNPeek
{
    public static TagNodeIndex nth
        (Vector<? extends HTMLNode> html, int nth, LV l, TC tagCriteria, String... htmlTags)
    {
        HTMLNode n;

        for (int i = l.start; i < l.end; i++)

            if (    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(tagCriteria, htmlTags))
                &&  (--nth == 0)
            )
                return new TagNodeIndex(i, (TagNode) html.elementAt(i));

        return null;
    }

    public static TagNodeIndex nthFromEnd
        (Vector<? extends HTMLNode> html, int nth, LV l, TC tagCriteria, String... htmlTags)
    {
        HTMLNode n;

        for (int i = l.end-1; i >= l.start; i--)

            if (    ((n = html.elementAt(i)).isTagNode())       
                &&  (((TagNode) n).isTag(tagCriteria, htmlTags))
                &&  (--nth == 0)
            )
                return new TagNodeIndex(i, (TagNode) html.elementAt(i));

        return null;
    }

    public static Vector<TagNodeIndex> all
        (Vector<? extends HTMLNode> html, LV l, TC tagCriteria, String... htmlTags)
    {
        Vector<TagNodeIndex>    ret = new Vector<>();
        HTMLNode                n;

        for (int i = l.start; i < l.end; i++)
            if ((n = html.elementAt(i)).isTagNode())
                if (((TagNode) n).isTag(tagCriteria, htmlTags))
                    ret.addElement(new TagNodeIndex(i, (TagNode) n));

        return ret;
    }

    public static Vector<TagNodeIndex> allExcept
        (Vector<? extends HTMLNode> html, LV l, TC tagCriteria, String... htmlTags)
    {
        Vector<TagNodeIndex>    ret = new Vector<>();
        HTMLNode                n;

        for (int i = l.start; i < l.end; i++)
            if ((n = html.elementAt(i)).isTagNode())
                if (((TagNode) n).isTagExcept(tagCriteria, htmlTags))
                    ret.addElement(new TagNodeIndex(i, (TagNode) n));

        return ret;
    }
}