package org.eparapher.rcp.dialog;

import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.HashMap;
import java.util.Iterator;

import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.ListSelectionModel;


public class SelectCertificateDialog extends JDialog {
	
	private static final long serialVersionUID = 13453L;
	
	private static final int  DIALOG_HEIGHT = 200;
	private static final int  DIALOG_WIDTH = 350;
	
	private String selectedAlias;

    private JPanel MainPanel;
    //GUI Objects
    private JList certList;
    private JScrollPane listScrollPane;
    
    private JLabel txtLabel;
    private JButton butOK;
    private JButton butCancel;
    
    public boolean recieved;
    
	public SelectCertificateDialog( HashMap hmcertList, Frame owner, String title) {
		
		super(owner, title, true);
				
        recieved = false;
        selectedAlias = null;

        //GUI Elements
        MainPanel = new JPanel();
        txtLabel = new JLabel();
        butOK = new JButton();
        butCancel = new JButton();

        //GUI Settings
        setLayout(null);
        setSize( DIALOG_WIDTH, DIALOG_HEIGHT );
        setVisible(false);
        
        constructListContent(hmcertList);
        MainPanel.add(listScrollPane);
        listScrollPane.setBounds(1, 25, DIALOG_WIDTH -9, DIALOG_HEIGHT-100);
        
        txtLabel.setText("Selectionnez votre certificat d'authentification :");
        MainPanel.add(txtLabel);
        txtLabel.setBounds(1, 1, DIALOG_WIDTH -9, 22);
        
        butOK.setText("OK");
        MainPanel.add(butOK);
        butOK.setBounds((DIALOG_WIDTH/3)-35, DIALOG_HEIGHT-57, 70, 22);
        
        butCancel.setText("Cancel");
        MainPanel.add(butCancel);
        butCancel.setBounds((DIALOG_WIDTH*2/3)-35, DIALOG_HEIGHT-57, 70, 22);
        
        SelectCertificateDialogActionListener actionlistener = new SelectCertificateDialogActionListener();
        butOK.addActionListener(actionlistener);
        butCancel.addActionListener(actionlistener);
        

        MainPanel.setLayout(null);
        MainPanel.setBounds(0, 0, DIALOG_WIDTH, DIALOG_HEIGHT );
        add(MainPanel);
        MainPanel.setVisible(true);
        
        // Gestion du bouton fermer la fenetre
        SelectDialogWindowAdapter windowadapter = new SelectDialogWindowAdapter(); 
        addWindowListener(windowadapter);
       
        setResizable(false);
        Dimension dimension = getToolkit().getScreenSize();
        Rectangle rectangle = getBounds();
        setLocation((dimension.width - rectangle.width) / 2, (dimension.height - rectangle.height) / 2);

	}

	private void constructListContent(HashMap hmcertList) {

		//Build the certificate list
		DefaultListModel listModel = new DefaultListModel();
		Iterator aliasesIter = hmcertList.keySet().iterator();
		while (aliasesIter.hasNext()) {
			String alias = (String) aliasesIter.next();
			listModel.addElement(alias);
		}
		
		//finalise the gui component
        certList = new JList(listModel);
		certList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		certList.setLayoutOrientation(JList.VERTICAL);
		certList.setSelectedIndex(0);
		certList.setVisibleRowCount(5);
		certList.setVisible(true);

		listScrollPane = new JScrollPane(certList,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
		listScrollPane.setVisible(true);
	}


	public String getSelectedAlias() {
		return selectedAlias;
	}

	public boolean isRecieved() {
		return recieved;
	}
	
    //GUI Events
	class  SelectCertificateDialogActionListener   implements ActionListener {

	    public void actionPerformed(ActionEvent actionevent) {
	            Object obj = actionevent.getSource();
	            if(obj == butOK) {
	            	if (!certList.isSelectionEmpty())
	            		selectedAlias = (String) certList.getSelectedValue();
	            	else {
	                	certList.setSelectedIndex(0);
	                	selectedAlias = (String) certList.getSelectedValue();
	                }
	            }
	            if(obj == butCancel)
	            {
                	certList.setSelectedIndex(0);
                	selectedAlias = (String) certList.getSelectedValue();
	            }
                setVisible(false);	 
            	recieved = true;
	    }
	}
	
    //GUI Events
	class SelectDialogWindowAdapter extends  WindowAdapter {

        public void windowClosing(WindowEvent windowevent)
        {
        	certList.setSelectedIndex(0);
        	selectedAlias = (String) certList.getSelectedValue();

        	recieved = true;
            setVisible(false);
            dispose();
        }

    }
}