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.datasource.wizard;

import java.util.ArrayList;

import org.eclipse.jface.wizard.IWizardPage;

import org.eclipse.jface.wizard.Wizard;

import org.eclipse.jface.wizard.WizardPage;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.ModifyEvent;

import org.eclipse.swt.events.ModifyListener;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Combo;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Text;

import eu.etaxonomy.cdm.database.DatabaseTypeEnum;

import eu.etaxonomy.cdm.database.ICdmDataSource;

import eu.etaxonomy.cdm.model.name.NomenclaturalCode;

import eu.etaxonomy.taxeditor.datasource.CdmDataSourceRepository;

/**

 * <p>CdmDataSourceTypeSelectionWizardPage class.</p>

 *

 * @author n.hoffmann

 * @created 18.05.2009

 * @version 1.0

 */

public class CdmDataSourceTypeSelectionWizardPage extends WizardPage implements ModifyListener{

	private ArrayList<DatabaseTypeEnum> databaseTypes;

	private Text datasourceNameText;

	private String dataSourceName;

	private Combo databaseTypeCombo;

	private Composite composite;

	private Composite editDatasourceComposite;

	private NomenclaturalCode nomenclaturalCode;

	private boolean dataBaseTypeSelected = false;

	private boolean dataSourceNameSet = false;

	private ICdmDataSource dataSource;

	private WizardPage nextPage;

	private CdmDataSourceCredentialsWizardPage credentialsWizardPage;

	/**

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

	 *

	 * @param dataSource a {@link eu.etaxonomy.cdm.database.ICdmDataSource} object.

	 */

	public CdmDataSourceTypeSelectionWizardPage(ICdmDataSource dataSource) {

		super("DataSourceWizardPage");

		this.dataSource = dataSource;

		String pageName = dataSource == null ? "Create New Datasource" : "Edit Existing Datasource";

		setTitle(pageName);

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)

	 */

	/** {@inheritDoc} */

	public void createControl(Composite parent) {

		setPageComplete(false);

		// Create top-level composite 

		composite = new Composite(parent, SWT.NONE);

		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 1;

		composite.setLayout(gridLayout);

		// Create editDatasourceComposite to display a dataSource's name and type

		editDatasourceComposite = new Composite(composite, SWT.NONE);

		GridData datasourceGridData = new GridData(SWT.FILL, SWT.TOP, true, true);

		editDatasourceComposite.setLayoutData(datasourceGridData);

		GridLayout datasourceLayout = new GridLayout();

		datasourceLayout.numColumns = 2;

		editDatasourceComposite.setLayout(datasourceLayout);

		// Create label and input for dataSource name

		Label datasourceNameLabel = new Label(editDatasourceComposite, SWT.NONE);

		datasourceNameLabel.setText("Datasource Name:");

		datasourceNameText = new Text(editDatasourceComposite, SWT.BORDER);

		datasourceNameText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));

		datasourceNameText.addModifyListener(this);

		// Create label and dropdown for database type		

		Label databaseTypeLabel = new Label(editDatasourceComposite, SWT.NONE);

		databaseTypeLabel.setText("Database Type:");

		databaseTypeCombo = new Combo(editDatasourceComposite, SWT.BORDER | SWT.READ_ONLY);

		GridData comboLayout = new GridData(SWT.FILL, SWT.CENTER, false, false);

		databaseTypeCombo.setLayoutData(comboLayout);

		populateComboBoxItems();	

		// Create listener to display database type-specific config options

		databaseTypeCombo.addSelectionListener(new SelectionAdapter() {

			public void widgetSelected(SelectionEvent e) {

				// Get database type at the selected index

				DatabaseTypeEnum type = databaseTypes.get(databaseTypeCombo.getSelectionIndex());

				addDatabasePage(type);

				setDataBaseTypeSelected(true);

				checkPageComplete();

			}

		});

		// make the composite the wizard pages control

		setControl(composite);

	}

	private void populateComboBoxItems() {

		// Init DB types

		if (databaseTypes == null) {

			databaseTypes = new ArrayList<DatabaseTypeEnum>();

		}

		// Add types to the type drop-down and to the types collection

		for (DatabaseTypeEnum type : DatabaseTypeEnum.getAllTypes()) {

			// FIXME right now we filter supported types

			if(type.equals(DatabaseTypeEnum.MySQL)

				|| type.equals(DatabaseTypeEnum.H2)

				|| type.equals(DatabaseTypeEnum.SqlServer2005)){

				databaseTypeCombo.add(type.getName());

				databaseTypes.add(type);

			}

		}

	}

	/**

	 * @param type

	 */

	private void addDatabasePage(DatabaseTypeEnum type) {

		// add credentials wizard page according to selection

		Wizard wizard = (Wizard) getWizard();

		credentialsWizardPage = null;

		if(type == DatabaseTypeEnum.H2){

			credentialsWizardPage = new CdmDataSourceH2WizardPage(dataSource);

		}else if(type == DatabaseTypeEnum.MySQL){

			credentialsWizardPage = new CdmDataSourceMySQLWizardPage(dataSource);

		}else if(type == DatabaseTypeEnum.SqlServer2005){

			credentialsWizardPage = new CdmDataSourceSQLServerWizardPage(dataSource);

		}

		if(wizard.getPage(credentialsWizardPage.getName()) != null){

			nextPage = (WizardPage) wizard.getPage(credentialsWizardPage.getName());

		}else{

			wizard.addPage(credentialsWizardPage);

			nextPage = credentialsWizardPage;

		}

		getContainer().updateButtons();

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.wizard.WizardPage#getNextPage()

	 */

	/** {@inheritDoc} */

	@Override

	public IWizardPage getNextPage() {

		return nextPage;

	}

	/* (non-Javadoc)

	 * @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)

	 */

	/** {@inheritDoc} */

	public void modifyText(ModifyEvent e) {

		String name = datasourceNameText.getText();

		if(name.length() == 0){

			setDataSourceNameSet(false);

			setErrorMessage("DataSource name must not be empty.");

		}else if(CdmDataSourceRepository.getDataSource(name) != null){

			setDataSourceNameSet(false);

			setErrorMessage("DataSource with the same name already exists");

		}else{

			setDataSourceNameSet(true);

			setErrorMessage(null);

		}

		dataSourceName = name;

		checkPageComplete();

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.wizard.WizardPage#canFlipToNextPage()

	 */

	/**

	 * <p>checkPageComplete</p>

	 */

	public void checkPageComplete() {

		boolean complete = isDataBaseTypeSelected();

		complete &= isDataSourceNameSet();

		setPageComplete(complete);

	}

	/**

	 * <p>Getter for the field <code>dataSourceName</code>.</p>

	 *

	 * @return a {@link java.lang.String} object.

	 */

	public String getDataSourceName() {

		return dataSourceName;

	}

	/**

	 * <p>Getter for the field <code>credentialsWizardPage</code>.</p>

	 *

	 * @return the credentialsWizardPage

	 */

	public CdmDataSourceCredentialsWizardPage getCredentialsWizardPage() {

		return credentialsWizardPage;

	}

	/**

	 * <p>isDataBaseTypeSelected</p>

	 *

	 * @return the dataBaseTypeSelected

	 */

	public boolean isDataBaseTypeSelected() {

		return dataBaseTypeSelected;

	}

	/**

	 * <p>Setter for the field <code>dataBaseTypeSelected</code>.</p>

	 *

	 * @param dataBaseTypeSelected the dataBaseTypeSelected to set

	 */

	public void setDataBaseTypeSelected(boolean dataBaseTypeSelected) {

		this.dataBaseTypeSelected = dataBaseTypeSelected;

	}

	/**

	 * <p>isDataSourceNameSet</p>

	 *

	 * @return the dataSourceNameSet

	 */

	public boolean isDataSourceNameSet() {

		return dataSourceNameSet;

	}

	/**

	 * <p>Setter for the field <code>dataSourceNameSet</code>.</p>

	 *

	 * @param dataSourceNameSet the dataSourceNameSet to set

	 */

	public void setDataSourceNameSet(boolean dataSourceNameSet) {

		this.dataSourceNameSet = dataSourceNameSet;

	}

	/**

	 * <p>Getter for the field <code>nomenclaturalCode</code>.</p>

	 *

	 * @return the nomenclaturalCode

	 */

	public NomenclaturalCode getNomenclaturalCode() {

		return nomenclaturalCode;

	}

}