package net.sourceforge.phpdt.sql.view.bookmark;

import java.net.MalformedURLException;

import org.eclipse.swt.graphics.Image;

import net.sourceforge.phpdt.sql.model.Sequence;
import net.sourceforge.phpdt.sql.sql.metadata.ObjectMetaData;

public class SequenceNode implements TreeNode, Comparable  {
    private GroupNode parent;
    private Sequence sequence;

    public SequenceNode(GroupNode parent, Sequence sequence) {
    	this.parent = parent;
    	this.sequence = sequence;
    }

	public ObjectMetaData getMetaData() {
			return null;	//no metadata implementation for now
		}
    
	public Object[] getChildren() {
		return Root.EMPTY_ARRAY;
	}

	public Object getParent() {
		return parent;
	}

	public boolean hasChildren() {
		return false;
	}
	
	public String getName() {
		return this.sequence.getQualifiedName();
	}
	
	public String toString() {
		return getName();
	}

	public int compareTo(Object o) {
		if (o instanceof SequenceNode) {
			SequenceNode node = (SequenceNode) o;
			return getName().compareTo(node.getName());
		} else if (o instanceof TreeNode || o instanceof ViewNode) {
			return 1;
		}
		return 0;
	}
	/**
	 * @return an Image object to appear in the view
	 * @throws MalformedURLException
	 */
	public Image getImage() throws MalformedURLException {
		if (parent instanceof GroupNode){
			GroupNode group = (GroupNode) parent;
			return group.getImage();
		} else
			return null;
	}

	/**
	 * @return the associated BookmarkNode, by navigating upwards in the tree 
	 */
	public BookmarkNode getBookmark() {
		TreeNode node = parent;
		while (!( node instanceof BookmarkNode))
		{
			node = (TreeNode) node.getParent();
		}
		return (BookmarkNode) node;
	}

}