package org.hwo.ui.servicelink.register.bitfield;

import java.awt.Component;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

import javax.swing.JCheckBox;
import javax.swing.JPanel;

import org.hwo.servicelink.ServiceLink;
import org.hwo.ui.servicelink.register.ServiceRegister;
import org.hwo.ui.servicelink.register.ServiceRegisterControl;

import java.awt.FlowLayout;

import javax.swing.JScrollPane;

import java.awt.Checkbox;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;

import javax.swing.BoxLayout;

public class BitFieldEditor extends JPanel implements ServiceRegisterControl {

	private ServiceRegister serviceRegister;
	
	private JCheckBox[] checkboxes;
	private JScrollPane scrollPane;
	private JPanel pBits;
	
	private Integer intValue;
	
	private List<Field> fields;
	
	public class Field
	{
		int		start,
				len;
		
		String	text;
		
		JCheckBox checkbox;
		
		public Field(int start,int len)
		{
			this.start = start;
			this.len = len;
			this.text = String.format("B%d",start);
		}

		public Field(int start)
		{
			this.start = start;
			this.len = 1;
			this.text = String.format("B%d",start);
		}
		
		public void setText(String text)
		{
			this.text = text;
		}
		public String getText()
		{
			return text;
		}
		
		public String getTextRepresentation()
		{
			if (BitFieldEditor.this.getIntValue() != null)
			{
				if ((BitFieldEditor.this.getIntValue() & (1<<start)) != 0)
				{
					return getText();
				}
			}
			return "";
		}
		public Component getComponent()
		{
			if (checkbox == null)
			{
				checkbox = new JCheckBox();
				checkbox.setText(getText());
			}
			return checkbox;
		}
		public void sync()
		{
			
		}
	}
	
	public BitFieldEditor() {
		GridBagLayout gridBagLayout = new GridBagLayout();
		gridBagLayout.columnWidths = new int[]{0, 0};
		gridBagLayout.rowHeights = new int[]{0, 0};
		gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
		gridBagLayout.rowWeights = new double[]{1.0, Double.MIN_VALUE};
		setLayout(gridBagLayout);
		
		scrollPane = new JScrollPane();
		GridBagConstraints gbc_scrollPane = new GridBagConstraints();
		gbc_scrollPane.fill = GridBagConstraints.BOTH;
		gbc_scrollPane.gridx = 0;
		gbc_scrollPane.gridy = 0;
		add(scrollPane, gbc_scrollPane);
		
		pBits = new JPanel();
		scrollPane.setViewportView(pBits);
		pBits.setLayout(new BoxLayout(pBits, BoxLayout.Y_AXIS));
		
		checkboxes = new JCheckBox[0];
		
		initialize();
	}
	
	private void initialize()
	{
		removeAllFieldComponents();
		createFieldControls();
		
		doLayout();
		invalidate();
	}
	
	protected void createFieldControls()
	{
		fields = new ArrayList<BitFieldEditor.Field>();		
		for (int i=0;i<32;i++)
		{
			Field field = new Field(i); 
			fields.add(field);
			addFieldComponent(field.getComponent());
		}		
	}
	
	protected void removeAllFieldComponents()
	{
		pBits.removeAll();
	}
	protected void addFieldComponent(Component component)
	{
		pBits.add(component);
	}
	
	public void synchronize()
	{
		
	}

	@Override
	public Component getComponent() {
		return this;
	}


	@Override
	public void setServiceRegister(ServiceRegister serviceRegister) {
		this.serviceRegister = serviceRegister;
	}
	
	public Integer getIntValue()
	{
		return this.intValue;
	}
	public void setIntValue(Integer value)
	{
		this.intValue = value;
	}

	@Override
	public void writeValue() {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void readValue() {
		// TODO Auto-generated method stub
		
	}
	
}