/*

* Copyright (c) 2008 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.carbide.remoteconnections.settings.ui;

import java.text.MessageFormat;

import java.util.Collection;

import java.util.HashMap;

import java.util.Map;

import org.eclipse.jface.wizard.IWizardPage;

import org.eclipse.jface.wizard.Wizard;

import org.eclipse.jface.wizard.WizardDialog;

import org.eclipse.swt.widgets.Shell;

import com.nokia.carbide.remoteconnections.Messages;

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

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

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

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

import com.nokia.carbide.remoteconnections.internal.api.IConnection2;

import com.nokia.carbide.remoteconnections.internal.registry.Registry;

/**

 * Main wizard class for hosting new and edit connection settings UI

 */

public class SettingsWizard extends Wizard {

	private ConnectionTypePage connectionTypePage;

	private ConnectionSettingsPage connectionSettingsPage;

	private IConnection connectionToEdit;

	private IService serviceToRestrict;

	private Map<IConnectedService, Boolean> savedEnabledStates;

	public SettingsWizard(IConnection connectionToEdit, IService serviceToRestrict) {

		this.connectionToEdit = connectionToEdit;

		this.serviceToRestrict = serviceToRestrict;

		if (connectionToEdit == null)

			setWindowTitle(Messages.getString("SettingsWizard.WindowTitle.New")); //$NON-NLS-1$

		else {

			setWindowTitle(MessageFormat.format(Messages.getString("SettingsWizard.WindowTitle.Edit"), connectionToEdit.getDisplayName())); //$NON-NLS-1$

			saveConnectedServicesEnabledState();

			enableConnectedServices(false);

		}

		setNeedsProgressMonitor(true);

	}

	public SettingsWizard(IConnection connectionToEdit) {

		this(connectionToEdit, null);

	}

	public SettingsWizard() {

		this(null, null);

	}

	@Override

	public void addPages() {

		connectionTypePage = new ConnectionTypePage(this);

		addPage(connectionTypePage);

		connectionSettingsPage = new ConnectionSettingsPage(this);

		addPage(connectionSettingsPage);

	}

    public IWizardPage getStartingPage() {

    	if (connectionToEdit == null)

    		return connectionTypePage;

    	else

    		return connectionSettingsPage;

    }

    public IConnection getConnectionToEdit() {

		return connectionToEdit;

	}

    public boolean isConnectionToEditDynamic() {

    	return connectionToEdit instanceof IConnection2 &&

    		((IConnection2) connectionToEdit).isDynamic();

    }

	public IService getServiceToRestrict() {

		return serviceToRestrict;		

	}

	public IConnectionType getConnectionType() {

		return connectionTypePage.getConnectionType();

	}

	@Override

	public boolean performFinish() {

		String newName = connectionTypePage.getName();

		Map<String, String> newSettings = connectionSettingsPage.getSettings();

		IConnectionType newConnectionType = connectionTypePage.getConnectionType();

		if (connectionToEdit == null || !connectionToEdit.getConnectionType().equals(newConnectionType)) {

			String id = null;

			if (connectionToEdit != null) {

				id = connectionToEdit.getIdentifier();

				Registry.instance().removeConnection(connectionToEdit);

			}

			connectionToEdit = newConnectionType.getConnectionFactory().createConnection(newSettings);

			if (id != null)

				connectionToEdit.setIdentifier(id);

			connectionToEdit.setDisplayName(newName);

			Registry.instance().addConnection(connectionToEdit);

		}

		else if (newSettings != null) {

			connectionToEdit.updateSettings(newSettings);

		}

		if (!newName.equals(connectionToEdit.getDisplayName())) {

			connectionToEdit.setDisplayName(newName);

			Registry.instance().updateDisplays();

		}

		enableConnectedServices(true);

		Registry.instance().storeConnections();

		return true;

	}

	@Override

	public boolean performCancel() {

		enableConnectedServices(true);

		return true;

	}

	private void saveConnectedServicesEnabledState() {

		Collection<IConnectedService> connectedServices = Registry.instance().getConnectedServices(connectionToEdit);

			return;

		if (savedEnabledStates == null)

			savedEnabledStates = new HashMap<IConnectedService, Boolean>();

		for (IConnectedService connectedService : connectedServices) {

			savedEnabledStates.put(connectedService, connectedService.isEnabled());

		}

	}

	private void enableConnectedServices(boolean enabled) {

		Collection<IConnectedService> connectedServices = Registry.instance().getConnectedServices(connectionToEdit);

			return;

		for (IConnectedService connectedService : connectedServices) {

			if (!enabled) // disable when asked

				connectedService.setEnabled(false);

			else {

				Boolean wasEnabled = savedEnabledStates.get(connectedService);

				if (wasEnabled != null && wasEnabled) // reenable only if was enabled

					connectedService.setEnabled(true);

			}

		}

	}

	public int open(Shell shell) {

		WizardDialog dialog = new WizardDialog(shell, this);

		return dialog.open();

	}

	public void connectionTypeChanged() {

		connectionSettingsPage.updateDynamicUI();

		getContainer().updateButtons();

	}

}