/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.cdt.internal.debug.launch.newwizard;

import java.text.MessageFormat;

import org.eclipse.core.runtime.IStatus;

import org.eclipse.core.runtime.Status;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

import com.nokia.carbide.remoteconnections.RemoteConnectionsActivator;

import com.nokia.carbide.remoteconnections.interfaces.IConnection;

import com.nokia.carbide.remoteconnections.interfaces.IConnectionsManager;

import com.nokia.carbide.remoteconnections.interfaces.IConnectionsManager.IConnectionListener;

import com.nokia.carbide.remoteconnections.settings.ui.SettingsWizard;

/**

 * Present the "Connect to device" section with a short description.

 */

public class ConnectToDeviceSection extends AbstractLaunchWizardSection implements IConnectionListener {

	private static final String NO_CURRENT_CONNECTION_MSG = Messages.getString("ConnectToDeviceSection.NoConnectionMsg"); //$NON-NLS-1$

	private final IConnectionsManager manager;

	/**

	 * @param unifiedLaunchOptionsPage 

	 * 

	 */

	public ConnectToDeviceSection(LaunchWizardData data, UnifiedLaunchOptionsPage launchOptionsPage) {

		super(data, Messages.getString("ConnectToDeviceSection.Title"), launchOptionsPage); //$NON-NLS-1$

		manager = RemoteConnectionsActivator.getConnectionsManager();

	}

	public void createControl(Composite parent) {

		createSection(parent, 0);

		manager.addConnectionListener(this);

	}

	@Override

	protected void dispose() {

		manager.removeConnectionListener(this);

	}

	public void initializeSettings() {

		data.setConnection(manager.getCurrentConnection());

	}

	@Override

	protected void validate() {

		status = revalidate(data);

	}

	/** Get the simple status for the connection state */

	static IStatus revalidate(LaunchWizardData data) {

		IStatus status = Status.OK_STATUS;

		if (data.getConnection() == null) {

			status = error(NO_CURRENT_CONNECTION_MSG);

		}

		return status;

	}

	static String getStandardPNPMessage() {

		return Messages.getString("ConnectToDeviceSection.StdPNPMsg"); //$NON-NLS-1$

	}

	@Override

	protected void updateUI() {

		if (control == null || control.isDisposed())

			return;

		String msg;

		if (data.getConnection() != null)

			msg = MessageFormat.format(Messages.getString("ConnectToDeviceSection.CurrentConnectionLabel"), data.getConnectionName()); //$NON-NLS-1$

		else

			msg = MessageFormat.format("{0} {1}", NO_CURRENT_CONNECTION_MSG, getStandardPNPMessage()); //$NON-NLS-1$

		descriptionLabel.setText(msg);

		launchOptionsPage.changed();

	}

	@Override

	protected AbstractLaunchSettingsDialog createChangeSettingsDialog(Shell shell, LaunchWizardData dialogData) {

		return new ConnectToDeviceDialog(shell, dialogData);

	}

	protected void refresh() {

		Display.getDefault().syncExec(new Runnable() {

			public void run() {

				validate();

				updateUI();

			}

		});

	}

	private void doConnectionsChanged() {

		data.setConnection(manager.getCurrentConnection());

		refresh();

	}

	public void connectionAdded(IConnection connection) {

		doConnectionsChanged();

	}

	public void connectionRemoved(IConnection connection) {

		doConnectionsChanged();

	}

	public void currentConnectionSet(IConnection connection) {

		doConnectionsChanged();

	}

	@Override

	protected void doChange() {

		// if no connections are available, immediately offer to create a connection

		if (manager.getConnections().isEmpty()) {

			SettingsWizard wizard = new SettingsWizard(null, data.getService());

			wizard.open(getControl().getShell());

			IConnection newConnection = wizard.getConnectionToEdit();

			data.setConnection(newConnection);

		} else {

			super.doChange();

		}

		IConnection connection = data.getConnection();

		if (connection != null && !connection.equals(manager.getCurrentConnection()))

			manager.setCurrentConnection(connection);

	}

}