package org.hwo.ui.servicelink.register;

import java.awt.Component;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.math.BigInteger;
import java.util.Hashtable;

import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.JTextField;

import org.hwo.servicelink.ServiceLink;
import org.hwo.ui.JComboBoxEx;

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

public class IndexedListRegisterEditor extends JPanel implements ServiceRegisterControl {
	
	public static class IndexedItem {
		private Integer index;
		private String	label;
		
		public IndexedItem(Integer index,String label) {
			this.index = index;
			this.label = label;
		}
		
		@Override
		public String toString() {
			return String.format("%d: %s", this.index, this.label);
		}

		public Integer getIndex() {
			return index;
		}

		public void setIndex(Integer index) {
			this.index = index;
		}

		public String getLabel() {
			return label;
		}

		public void setLabel(String label) {
			this.label = label;
		}

	};
	
	private ServiceRegister serviceRegister;
	private JComboBoxEx cbValue;

	private IndexedItem[]	items;
	
	
	public IndexedListRegisterEditor()
	{
		super();		
		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[]{0.0, Double.MIN_VALUE};
		setLayout(gridBagLayout);
		
		cbValue = new JComboBoxEx();
		GridBagConstraints gbc_tfValue = new GridBagConstraints();
		gbc_tfValue.fill = GridBagConstraints.HORIZONTAL;
		gbc_tfValue.gridx = 0;
		gbc_tfValue.gridy = 0;
		add(cbValue, gbc_tfValue);
	}

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

	@Override
	public void setServiceRegister(ServiceRegister serviceRegister) {
		this.serviceRegister = serviceRegister;
	}

	@Override
	public void writeValue() {
		this.serviceRegister.writeIntegerValue(((IndexedItem)cbValue.getSelectedItem()).getIndex());
	}

	@Override
	public void readValue() {
		Integer i = this.serviceRegister.readIntegerValue();
		if ( i == null )
			i = 0;
		
		for (IndexedItem item : items) {
			if (item.getIndex().equals(i)) {
				cbValue.setSelectedItem(item);
				return;
			}
		}
		
		IndexedItem item = new IndexedItem(i, "Unkown Index");
		cbValue.setSelectedItem(item);
	}
	
	@Override
	public boolean requestFocusInWindow() {
		return cbValue.requestFocusInWindow();
	}

	public IndexedItem[] getItems() {
		return items;
	}

	public void setItems(IndexedItem[] items) {
		this.items = items;
		
		cbValue.removeAllItems();
		for (IndexedItem item: items){
			cbValue.addItem(item);
		}
	}
}