package org.apache.poi.hssf.usermodel;

import java.util.ArrayList;
import java.util.List;
import java.util.Iterator;

/**
 * A shape group may contain other shapes.  It was no actual form on the
 * sheet.
 *
 * @author Glen Stampoultzis (glens at apache.org)
 */
public class HSSFShapeGroup
        extends HSSFShape
        implements HSSFShapeContainer
{
    List shapes = new ArrayList();
    int x1 = 0;
    int y1  = 0 ;
    int x2 = 1023;
    int y2 = 255;


    public HSSFShapeGroup( HSSFShape parent, HSSFAnchor anchor )
    {
        super( parent, anchor );
    }

    /**
     * Create another group under this group.
     * @param anchor    the position of the new group.
     * @return  the group
     */
    public HSSFShapeGroup createGroup(HSSFChildAnchor anchor)
    {
        HSSFShapeGroup group = new HSSFShapeGroup(this, anchor);
        group.anchor = anchor;
        shapes.add(group);
        return group;
    }

    /**
     * Create a new simple shape under this group.
     * @param anchor    the position of the shape.
     * @return  the shape
     */
    public HSSFSimpleShape createShape(HSSFChildAnchor anchor)
    {
        HSSFSimpleShape shape = new HSSFSimpleShape(this, anchor);
        shape.anchor = anchor;
        shapes.add(shape);
        return shape;
    }

    /**
     * Create a new textbox under this group.
     * @param anchor    the position of the shape.
     * @return  the textbox
     */
    public HSSFTextbox createTextbox(HSSFChildAnchor anchor)
    {
        HSSFTextbox shape = new HSSFTextbox(this, anchor);
        shape.anchor = anchor;
        shapes.add(shape);
        return shape;
    }

    /**
     * Creates a polygon
     *
     * @param anchor    the client anchor describes how this group is attached
     *                  to the sheet.
     * @return  the newly created shape.
     */
    public HSSFPolygon createPolygon(HSSFChildAnchor anchor)
    {
        HSSFPolygon shape = new HSSFPolygon(this, anchor);
        shape.anchor = anchor;
        shapes.add(shape);
        return shape;
    }

    /**
     * Return all children contained by this shape.
     */
    public List getChildren()
    {
        return shapes;
    }

    /**
     * Sets the coordinate space of this group.  All children are contrained
     * to these coordinates.
     */
    public void setCoordinates( int x1, int y1, int x2, int y2 )
    {
        this.x1 = x1;
        this.y1 = y1;
        this.x2 = x2;
        this.y2 = y2;
    }

    /**
     * The top left x coordinate of this group.
     */
    public int getX1()
    {
        return x1;
    }

    /**
     * The top left y coordinate of this group.
     */
    public int getY1()
    {
        return y1;
    }

    /**
     * The bottom right x coordinate of this group.
     */
    public int getX2()
    {
        return x2;
    }

    /**
     * The bottom right y coordinate of this group.
     */
    public int getY2()
    {
        return y2;
    }

    /**
     * Count of all children and their childrens children.
     */
    public int countOfAllChildren()
    {
        int count = shapes.size();
        for ( Iterator iterator = shapes.iterator(); iterator.hasNext(); )
        {
            HSSFShape shape = (HSSFShape) iterator.next();
            count += shape.countOfAllChildren();
        }
        return count;
    }
}