package org.expeditee.gio.gesture.data;

import java.util.Collection;
import java.util.LinkedHashSet;

import org.expeditee.core.Point;
import org.expeditee.gui.FrameUtils;
import org.expeditee.items.Item;
import org.expeditee.items.Text;

public class ItemSpecificGestureData extends GestureData {

	protected Item _currentItem;
	protected Collection<Item> _currentItems;
	protected Collection<Item> _enclosure;
	protected boolean _shiftDown;
	
	public ItemSpecificGestureData(Item item, boolean isShiftDown)
	{
		super();
		_currentItem = item;
		_shiftDown = isShiftDown;
	}
	
	public ItemSpecificGestureData(boolean isShiftDown)
	{
		super();
		init();
		_shiftDown = isShiftDown;
	}
	
	public ItemSpecificGestureData(Point position)
	{
		super(position);
		init();
	}
	
	public ItemSpecificGestureData(ItemSpecificGestureData other)
	{
		super(other);
		if (other != null) {
			_currentItem = other._currentItem;
			if (other._currentItems != null) {
				_currentItems = new LinkedHashSet<Item>(other._currentItems.size());
				_currentItems.addAll(other._currentItems);
			}
			if (other._enclosure != null) {
				_enclosure = new LinkedHashSet<Item>(other._enclosure.size());
				_enclosure.addAll(other._enclosure);
			}
		}
	}
	
	public Item getCurrentItem()
	{
		return _currentItem;
	}
	
	public Text getCurrentTextItem()
	{
		if (_currentItem instanceof Text) return (Text) _currentItem;
		
		return null;
	}
	
	public Collection<Item> getCurrentItems()
	{
		return _currentItems;
	}
	
	public Collection<Item> getEnclosure()
	{
		return _enclosure;
	}
	
	private void init()
	{
		_currentItem = FrameUtils.getCurrentItem();
		_currentItems = FrameUtils.getCurrentItems(_currentItem);
		_enclosure = FrameUtils.getEnclosingLineEnds();
	}
	
	@Override
	public GestureData clone()
	{
		return new ItemSpecificGestureData(this);
	}

	public boolean isShiftDown() {
		return _shiftDown;
	}
}