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package com.bestray.healthcarecommonutil.util;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.DefaultListSelectionModel;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.KeyStroke;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

// TODO: Auto-generated Javadoc
/**
 * The Class CheckListManager.
 *
 * @author User1
 */
public class CheckListManager extends MouseAdapter implements ListSelectionListener, ActionListener{ 
    
    /** The selection model. */
    private ListSelectionModel selectionModel = new DefaultListSelectionModel(); 
    
    /** The list. */
    private JList list = new JList(); 
    
    /** The hotspot. */
    int hotspot = new JCheckBox().getPreferredSize().width; 
 
    /**
     * Instantiates a new check list manager.
     *
     * @param list the list
     */
    public CheckListManager(JList list){ 
        this.list = list; 
        list.setCellRenderer(new CheckListCellRenderer(list.getCellRenderer(), selectionModel)); 
        list.registerKeyboardAction(this, KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0), JComponent.WHEN_FOCUSED); 
        list.addMouseListener(this); 
        selectionModel.addListSelectionListener(this); 
    } 
 
    /**
     * Gets the selection model.
     *
     * @return the selection model
     */
    public ListSelectionModel getSelectionModel(){ 
        return selectionModel; 
    } 
 
    /**
     * Toggle selection.
     *
     * @param index the index
     */
    private void toggleSelection(int index){ 
        if(index<0) 
            return; 
 
        if(selectionModel.isSelectedIndex(index)) 
            selectionModel.removeSelectionInterval(index, index); 
        else 
            selectionModel.addSelectionInterval(index, index); 
    } 
 
    
    /* (non-Javadoc)
     * @see java.awt.event.MouseAdapter#mouseClicked(java.awt.event.MouseEvent)
     */
    public void mouseClicked(MouseEvent mouseEvent){ 
        int index = list.locationToIndex(mouseEvent.getPoint()); 
        if(index<0) 
            return; 
        if(mouseEvent.getX()>list.getCellBounds(index, index).x+hotspot) 
            return; 
        toggleSelection(index); 
    } 
 
    
    /* (non-Javadoc)
     * @see javax.swing.event.ListSelectionListener#valueChanged(javax.swing.event.ListSelectionEvent)
     */
    public void valueChanged(ListSelectionEvent e){ 
        list.repaint(list.getCellBounds(e.getFirstIndex(), e.getLastIndex())); 
    } 
 
    
    /* (non-Javadoc)
     * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
     */
    public void actionPerformed(ActionEvent e){ 
        toggleSelection(list.getSelectedIndex()); 
    } 
}