EDIT

// $Id$

/**

 * Copyright (C) 2007 EDIT

 * European Distributed Institute of Taxonomy 

 * http://www.e-taxonomy.eu

 * 

 * The contents of this file are subject to the Mozilla Public License Version 1.1

 * See LICENSE.TXT at the top of this package for the full license terms.

 */

package eu.etaxonomy.taxeditor.dialogs;

import org.apache.log4j.Logger;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.CLabel;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.swt.widgets.Text;

import org.springframework.security.authentication.BadCredentialsException;

import org.springframework.security.authentication.LockedException;

import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.store.StoreUtil;

/**

 * TODO wrap in a LoginModule

 * see: http://java.sun.com/j2se/1.5.0/docs/api/javax/security/auth/spi/LoginModule.html

 *

 * @author n.hoffmann

 * @created 16.06.2009

 * @version 1.0

 */

public class LoginDialog extends Dialog {

	private static final Logger logger = Logger.getLogger(LoginDialog.class);

	private static Text text_password;

	private static Text text_username;

	private String title;

	/**

	 * <p>Constructor for LoginDialog.</p>

	 *

	 * @param parentShell a {@link org.eclipse.swt.widgets.Shell} object.

	 */

	public LoginDialog(Shell parentShell) {

		super(parentShell);

		title = "Login";

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)

	 */

	/** {@inheritDoc} */

	@Override

	protected Control createDialogArea(Composite parent) {

		Composite composite = (Composite) super.createDialogArea(parent);

		//add controls to composite as necessary

		// Label for the heading

		final CLabel titleLabel = new CLabel(composite, SWT.NONE);

		titleLabel.setText("User Login");

		// Label for the username

		final CLabel userNameLabel = new CLabel(composite, SWT.NONE);

		userNameLabel.setText("Username");

		// Textfield for the username

		text_username = new Text(composite, SWT.BORDER);

		text_username.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		// Label for the password

		final CLabel passwordLabel = new CLabel(composite, SWT.NONE);

		passwordLabel.setText("Password");

		// Textfield for the password

		text_password = new Text(composite, SWT.PASSWORD | SWT.BORDER);

		text_password.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		return composite;

	}

    /*

     * (non-Javadoc)

     * 

     * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)

     */

    /** {@inheritDoc} */

    protected void configureShell(Shell shell) {

        super.configureShell(shell);

        if (title != null) {

			shell.setText(title);

		}

    }

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()

	 */

	/** {@inheritDoc} */

	@Override

	protected void okPressed() {

		String username = text_username.getText().trim();

		String password = text_password.getText().trim();

		UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password); 

		try{

			CdmStore.getLoginManager().authenticate(token);			

		}catch(BadCredentialsException e){

			logger.error("Bad credentials", e);

			StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Bad Credentials.");

		}catch(LockedException e){

			logger.error("Account is locked", e);

			StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Account is locked.");

		}catch(IllegalArgumentException e){

			logger.error("Null argument for either user or password", e);

			StoreUtil.warningDialog("Could not authenticate", this, "Could not authenticate. Reason: Username and/or Password empty.");

		}

		super.okPressed();

	}	

}