package timeflow.app.ui;

import timeflow.data.db.*;
import timeflow.model.*;
import timeflow.views.*;

import javax.swing.*;
import javax.swing.table.*;

import java.awt.*;
import java.util.*;

public class MassDeletePanel extends ModelPanel
{
	TableView table;
	ActList keepers;
	
	public MassDeletePanel(TFModel model, ActList keepers, String title)
	{
		super(model);
		this.keepers=keepers;
		setLayout(new BorderLayout());
		
		JPanel top=new JPanel();
		top.setLayout(new GridLayout(4,1));
		top.add(new JPanel());
		top.add(new JLabel(title));
		int n=keepers.size();
		String message=null;
		if (n>1)
			message="These are the "+n+" items that will remain.";
		else if (n==1)
			message="This in the only item that will remain.";
		else 
			message="No items will remain!";
		
		JLabel instructions=new JLabel(message);
		top.add(instructions);
		top.add(new JPanel());
		add(top, BorderLayout.NORTH);
		
		table=new TableView(model);
		model.removeListener(table);
		add(table, BorderLayout.CENTER);
		table.setEditable(false);
		table.setActs(keepers);
	}
	
	public void applyAction()
	{
		ActDB db=getModel().getDB();
		HashSet<Act> keepSet=new HashSet<Act>();
		keepSet.addAll(keepers);

		for (Act a: db.all())
			if (!keepSet.contains(a))
				db.delete(a);
		
		// we assume the caller will decide what event to fire.
	}
	
	public void detachFromModel()
	{
		TFModel model=getModel();
		model.removeListener(table);
		model.removeListener(this);
	}
	
	public Dimension getPreferredSize()
	{
		Dimension d=super.getPreferredSize();
		return new Dimension(Math.max(700, d.width), 250);
	}

	@Override
	public void note(TFEvent e) {
		// TODO Auto-generated method stub
		
	}
}