java-org.hwo.ui/src/org/hwo/ui/JOptionGroup.java

package org.hwo.ui;

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.util.ArrayList;

import javax.swing.GroupLayout;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JPanel;

public class JOptionGroup extends JComponent {
	JCheckBox checkBoxes[];
	private String[] options;
	
	private String[] selectedOptions;
	
	public JOptionGroup()
	{
		FlowLayout layout = new FlowLayout(FlowLayout.LEADING);
		
		setLayout(layout);
		options = new String[0];
		checkBoxes = new JCheckBox[0];
		
		setPreferredSize(new Dimension(270,  29));
	}

	public String[] getOptions() {
		return options;
	}

	public void setOptions(String[] options) {
		this.options = options;
		if (options == null)
			options = new String[0];
		
		rebuildOptions();
		
		if (selectedOptions != null)
			setSelectedOptions(selectedOptions);
		
	}
	
	private void rebuildOptions()
	{
		for (JCheckBox cb:checkBoxes)
		{
			remove(cb);
		}
		
		checkBoxes = new JCheckBox[ options.length ];
		
		for (int n=0; n < options.length; n++)
		{
			checkBoxes[n] = new JCheckBox();
			checkBoxes[n].setText(options[n]);
			
			add(checkBoxes[n]);
		}
		
		invalidate();
		repaint();
	}
	
	public int getOptionIndex(String option)
	{
		for (int n=0; n < options.length; n++)
		{
			if (options[n].equals(option))
				return n;
		}		
		return -1;
	}
	
	public Boolean isOptionSelected(String option)
	{
		int no = getOptionIndex(option);
		if (no >= 0)
		{
			return checkBoxes[no].isSelected();
		}
		return false;
	}
	
	public void selectOption(String option)
	{
		int no = getOptionIndex(option);
		if (no >= 0)
		{
			checkBoxes[no].setSelected(true);
		}	
	}

	public void unselectOption(String option)
	{
		int no = getOptionIndex(option);
		if (no >= 0)
		{
			checkBoxes[no].setSelected(false);
		}	
	}
	
	public String[] getSelectedOptions()
	{
		ArrayList<String> ol = new ArrayList<String>();
		for (int n=0; n < options.length; n++)
		{
			if (checkBoxes[n].isSelected())
				ol.add(options[n]);
		}
		return ol.toArray(new String[0]);
	}
	public void setSelectedOptions(String[] selectedOptions)
	{
		this.selectedOptions = selectedOptions;
		
		for (int n=0; n < options.length; n++)
			checkBoxes[n].setSelected(false);
		
		for (String option:selectedOptions)
			selectOption(option);
		
	}
	
	
	
}