/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

 */

package org.opensolaris.os.vp.client.swing;

import java.awt.*;

import java.util.*;

import java.util.List;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.text.JTextComponent;

import org.opensolaris.os.vp.panel.common.*;

import org.opensolaris.os.vp.panel.common.action.*;

import org.opensolaris.os.vp.util.misc.DialogMessage;

import org.opensolaris.os.vp.util.misc.finder.Finder;

import org.opensolaris.os.vp.util.swing.*;

import org.opensolaris.os.vp.util.swing.layout.*;

@SuppressWarnings({"serial"})

public class LoginPane extends DialogPane {

    //

    // Inner classes

    //

    private static abstract class LoginField<C extends Component>

	extends JPanel {

	//

	// Instance data

	//

	private JLabel label;

	private C field;

	//

	// Constructors

	//

	public LoginField() {

	    super(new BorderLayout());

	    setOpaque(false);

	    label = new JLabel();

	    add(label, BorderLayout.WEST);

	    field = createField();

	    add(field, BorderLayout.NORTH);

	}

	//

	// LoginField methods

	//

	public abstract C createField();

	public JLabel getLabel() {

	    return label;

	}

	public C getField() {

	    return field;

	}

	public void setEditable(boolean editable) {

	    label.setVisible(!editable);

	    field.setVisible(editable);

	}

	public abstract String getValue();

	public abstract void setValue(String text);

	public String toDisplayableText(String value) {

	    return value;

	}

	protected void updateLabel() {

	    getLabel().setText(toDisplayableText(getValue()));

	}

    }

    private static class LoginTextField extends LoginField<JTextField> {

	//

	// LoginField methods

	//

	@Override

	public JTextField createField() {

	    JTextField field = new JTextField(GUIUtil.getTextFieldWidth());

	    field.getDocument().addDocumentListener(

		new DocumentAdapter() {

		    @Override

		    public void docUpdate(DocumentEvent e) {

			updateLabel();

		    }

		});

	    return field;

	}

	@Override

	public String getValue() {

	    String value = getField().getText();

	    if (value.isEmpty()) {

		value = null;

	    }

	    return value;

	}

	@Override

	public void setValue(String text) {

	    getField().setText(text);

	}

    }

    private static class LoginComboBox extends LoginField<JComboBox> {

	//

	// Instance data

	//

	private String nullText;

	//

	// Constructors

	//

	public LoginComboBox(String nullText) {

	    this.nullText = nullText;

	}

	//

	// LoginField methods

	//

	@Override

	public JComboBox createField() {

	    final JComboBox field = new JComboBox();

	    if (!(field.getModel() instanceof DefaultComboBoxModel)) {

		field.setModel(new DefaultComboBoxModel());

	    }

	    final ListCellRenderer renderer = field.getRenderer();

	    // Handle null values in the model

	    field.setRenderer(

		new ListCellRenderer() {

		    @Override

                    public Component getListCellRendererComponent(JList list,

			Object value, int index, boolean isSelected,

			boolean cellHasFocus) {

                        return renderer.getListCellRendererComponent(list,

			    toDisplayableText((String)value), index, isSelected,

			    cellHasFocus);

		    }

                });

	    field.getModel().addListDataListener(

		new ListDataListener() {

		    @Override

		    public void contentsChanged(ListDataEvent e) {

			updateLabel();

		    }

		    @Override

		    public void intervalAdded(ListDataEvent e) {

			updateLabel();

		    }

		    @Override

		    public void intervalRemoved(ListDataEvent e) {

			updateLabel();

		    }

		});

	    return field;

	}

	@Override

	public String getValue() {

	    return (String)getField().getSelectedItem();

	}

	@Override

	public void setValue(String text) {

	    getField().getModel().setSelectedItem(text);

	}

	@Override

	public String toDisplayableText(String value) {

	    return value == null ? nullText : value;

	}

    }

    //

    // Static data

    //

    private static final Color COLOR_LABEL_ERROR = Color.red.darker();

    private static final String LABEL_HOST =

	Finder.getString("login.label.host");

    private static final String LABEL_USER =

	Finder.getString("login.label.user");

    private static final String LABEL_ROLE =

	Finder.getString("login.label.role");

    //

    // Instance data

    //

    private JPanel fieldPanel;

    private int nCoreFields;

    private JLabel hostLabel;

    private LoginField hostField;

    private JLabel userLabel;

    private LoginField userField;

    private JLabel roleLabel;

    private LoginComboBox roleField;

    //

    // Constructors

    //

    public LoginPane() {

	createFieldPanel();

	setContent(fieldPanel, false, false);

	SettingsButtonBar buttonBar = getButtonBar();

	JButton cancel = buttonBar.getCancelButton();

	cancel.addActionListener(setClickedButtonActionListener);

	// Move to left side of dialog

	buttonBar.remove(cancel);

	buttonBar.add(cancel, 0);

	JButton back = buttonBar.getBackButton();

	back.addActionListener(setClickedButtonActionListener);

	JButton forward = buttonBar.getForwardButton();

	forward.addActionListener(setClickedButtonActionListener);

	forward.setText(Finder.getString("login.button.forward"));

    }

    //

    // LoginPane methods

    //

    public void promptForAck(final LoginRequest request)

	throws ActionAbortedException {

	assert !EventQueue.isDispatchThread();

	final StringLoginProperty host = request.getHost();

	final StringLoginProperty user = request.getUser();

	final StringLoginProperty role = request.getRole();

	GUIUtil.invokeAndWait(

	    new Runnable() {

		@Override

		public void run() {

		    DialogMessage help = new DialogMessage(Finder.getString(

			"login.message.ack", host.getValue(),

			user.getValue(), role.getValue()));

		    List<DialogMessage> messages = request.getMessages();

		    messages.add(help);

		    getMessagePanel().setMessages(messages);

		    setHostInUI(host, true);

		    setUserInUI(user, true);

		    if (role.getValue() == null) {

			hideRole();

		    } else {

			setRoleInUI(role, true);

		    }

		    clearAuthFields();

		    getButtonBar().getBackButton().setEnabled(false);

		}

	});

	try {

	    awaitForward();

	} catch (ActionRegressedException impossible) {

	}

    }

    public void promptForHostAndUser(final LoginRequest request)

	throws ActionAbortedException {

	assert !EventQueue.isDispatchThread();

	final StringLoginProperty host = request.getHost();

	final StringLoginProperty user = request.getUser();

	GUIUtil.invokeAndWait(

	    new Runnable() {

		@Override

		public void run() {

		    String resource = "login.message.hostuser";

		    if (host.isEditable()) {

			resource += ".host";

		    }

		    if (user.isEditable()) {

			resource += ".user";

		    }

		    DialogMessage help = new DialogMessage(Finder.getString(

			resource, host.getValue(), user.getValue()));

		    List<DialogMessage> messages = request.getMessages();

		    messages.add(help);

		    getMessagePanel().setMessages(messages);

		    setHostInUI(host, true);

		    setUserInUI(user, true);

		    hideRole();

		    clearAuthFields();

		    getButtonBar().getBackButton().setEnabled(false);

		}

	});

	try {

	    awaitForward();

	} catch (ActionRegressedException impossible) {

	}

	setInProperty(host, hostField);

	setInProperty(user, userField);

    }

    public void promptForRole(final LoginRequest request,

        final List<String> roles) throws ActionAbortedException,

        ActionRegressedException {

	assert !EventQueue.isDispatchThread();

	final StringLoginProperty host = request.getHost();

	final StringLoginProperty user = request.getUser();

	final StringLoginProperty role = request.getRole();

	GUIUtil.invokeAndWait(

	    new Runnable() {

		@Override

		public void run() {

		    DialogMessage help = new DialogMessage(Finder.getString(

			"login.message.role", host.getValue(),

			user.getValue()));

		    List<DialogMessage> messages = request.getMessages();

		    messages.add(help);

		    getMessagePanel().setMessages(messages);

		    DefaultComboBoxModel model =

			(DefaultComboBoxModel)roleField.getField().getModel();

		    model.removeAllElements();

		    model.addElement(null);

		    for (String r : roles) {

			model.addElement(r);

		    }

		    setHostInUI(host, false);

		    setUserInUI(user, false);

		    setRoleInUI(role, true);

		    clearAuthFields();

		    getButtonBar().getBackButton().setEnabled(

			host.isEditable() || user.isEditable());

		}

	    });

	awaitForward();

	setInProperty(role, roleField);

    }

    /**

     * Prompt the user for role login information.

     *

     * @param    request - {@code LoginRequest}.

     *

     * @param    properties - A {@code List} of {@code LoginProperty} objects.

     *		 NOTE: Only instances of {@code StringLoginProperty} and

     *		 {@code PasswordLoginProperty} are allowed.

     */

    public void promptForRoleAuth(LoginRequest request,

        List<LoginProperty> properties) throws ActionAbortedException,

        ActionRegressedException {

	assert !EventQueue.isDispatchThread();

	final StringLoginProperty host = request.getHost();

	final StringLoginProperty user = request.getUser();

	final StringLoginProperty role = request.getRole();

	GUIUtil.invokeAndWait(

	    new Runnable() {

		@Override

		public void run() {

		    setHostInUI(host, false);

		    setUserInUI(user, false);

		    setRoleInUI(role, false);

                    getButtonBar().getBackButton().setEnabled(

                        host.isEditable() || user.isEditable() ||

                        role.isEditable());

		}

	    });

        DialogMessage help = new DialogMessage(Finder.getString(

            "login.message.roleauth", host.getValue(),

            user.getValue(), role.getValue()));

	promptForAuth(request.getMessages(), help, properties);

    }

    /**

     * Prompt the user for user login information.

     *

     * @param    request - {@code LoginRequest}.

     *

     * @param    properties - A {@code List} of {@code LoginProperty} objects.

     *		 NOTE: Only instances of {@code StringLoginProperty} and