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/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 */

package org.gvsig.fmap.mapcontrol.dal.swing.datastore;

import java.awt.Dimension;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.Insets;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.Iterator;

import java.util.List;

import javax.swing.JButton;

import javax.swing.JComboBox;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

import org.gvsig.fmap.dal.DataServerExplorer;

import org.gvsig.fmap.dal.DataServerExplorerParameters;

import org.gvsig.fmap.dal.NewDataStoreParameters;

import org.gvsig.fmap.dal.exception.InitializeException;

import org.gvsig.fmap.dal.exception.ProviderNotRegisteredException;

import org.gvsig.fmap.dal.exception.ValidateDataParametersException;

import org.gvsig.fmap.mapcontrol.swing.dynobject.DynObjectEditor;

import org.gvsig.tools.service.ServiceException;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

/**

 * @author gvSIG Team

 * @version $Id$

 *

 */

public class DefaultDataStoreParametersCreationPanel extends DataStoreParametersCreationPanel implements ActionListener{

    private static final long serialVersionUID = -1453149638996485029L;

    private static final Logger LOG =

        LoggerFactory.getLogger(DefaultDataStoreParametersCreationPanel.class);

    private static final DataManager DATA_MANAGER = DALLocator.getDataManager();

    private static final int FORM_HEIGTH = 18;

    private DataServerExplorer dataServerExplorer = null;

    private DataServerExplorerParameters dataServerExplorerParameters = null;

    private NewDataStoreParameters dataStoreParameters = null;

    private JButton explorersButton;

    private JComboBox explorersComboBox;

    private JButton providersButton;

    private JComboBox providersComboBox;

    public DefaultDataStoreParametersCreationPanel() {

        super();

        initComponents();

        populateExplorerCombo();

        initListeners();

        enableExplorerControls(false);

    }

    private void initListeners() {

        this.explorersComboBox.addActionListener(this);

        this.explorersButton.addActionListener(this);

        this.providersComboBox.addActionListener(this);

        this.providersButton.addActionListener(this);

    }

    @SuppressWarnings("rawtypes")

    private void populateExplorerCombo(){

        explorersComboBox.addItem(null);

        Iterator it = DATA_MANAGER.getExplorerProviders().iterator();

        while(it.hasNext()) {

            String explorer = (String)it.next();

            explorersComboBox.addItem(explorer);

        }

    }

    private void initComponents() {

        GridBagConstraints gridBagConstraints;

        explorersComboBox = new JComboBox();

        providersComboBox = new JComboBox();

        explorersButton = new JButton();

        providersButton = new JButton();

        setLayout(new GridBagLayout());

        explorersComboBox.setPreferredSize(new Dimension(0, FORM_HEIGTH));

        gridBagConstraints = new GridBagConstraints();

        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.insets = new Insets(0, 2, 0, 2);

        add(explorersComboBox, gridBagConstraints);

        explorersButton.setText("...");

        explorersButton.setPreferredSize(new Dimension(25, FORM_HEIGTH));

        gridBagConstraints = new GridBagConstraints();

        gridBagConstraints.gridx = 1;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.insets = new Insets(0, 2, 0, 2);

        add(explorersButton, gridBagConstraints);

        providersComboBox.setPreferredSize(new Dimension(0, FORM_HEIGTH));

        gridBagConstraints = new GridBagConstraints();

        gridBagConstraints.gridx = 2;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;

        gridBagConstraints.weightx = 1.0;

        gridBagConstraints.insets = new Insets(0, 2, 0, 2);

        add(providersComboBox, gridBagConstraints);

        providersButton.setText("...");

        providersButton.setPreferredSize(new Dimension(25, FORM_HEIGTH));

        gridBagConstraints = new GridBagConstraints();

        gridBagConstraints.gridx = 3;

        gridBagConstraints.gridy = 0;

        gridBagConstraints.insets = new Insets(0, 2, 0, 2);

        add(providersButton, gridBagConstraints);

    }

    @Override

    public NewDataStoreParameters getDataStoreParameters(){

        return dataStoreParameters;

    }

    @Override

    public DataServerExplorer getDataServerExplorer() {

        return dataServerExplorer;

    }

    public void actionPerformed(ActionEvent e) {

        if (e.getSource().equals(explorersButton)) {

            explorersButtonClicked();

        }else if (e.getSource().equals(providersButton)) {

            providersButtonClicked();

        }else if (e.getSource().equals(explorersComboBox)) {

            explorersComboSelectionChanged();

        }else if (e.getSource().equals(providersComboBox)) {

            providersComboSelectionChanged();

        }

    }

    private void explorersComboSelectionChanged(){

        String explorerName = (String)explorersComboBox.getSelectedItem();

        if (explorerName == null){

            dataServerExplorerParameters = null;

            dataServerExplorer = null;

            removeProvidersCombo();

            enableExplorerControls(false);

        }else{

            //Only update the explorer if the selection is different

            if ((dataServerExplorer == null) || (!explorerName.equals(dataServerExplorer.getProviderName()))){

                dataServerExplorerParameters = null;

                //Remove all the previous providers

                removeProvidersCombo();

                //Disable all the components and enable the explorer button

                this.enableExplorerControls(false);

                this.explorersButton.setEnabled(true);

                //Sometimes is possible to create an explorer without parameters (e.g: filesystem explorer"

                try {

                    dataServerExplorerParameters =

                        DATA_MANAGER.createServerExplorerParameters(explorerName);

                    dataServerExplorer =

                        DATA_MANAGER.openServerExplorer(explorerName, dataServerExplorerParameters);

                    populateProvidersCombo();

                    this.providersComboBox.setEnabled(true);

                } catch (InitializeException e) {

                    LOG.error("Error creating the explorer parameters", e);

                } catch (ProviderNotRegisteredException e) {

                    LOG.error("The explorer has not been registeger", e);

                } catch (ValidateDataParametersException e) {

                    LOG.error("Error creating the explorer", e);

                }

            }

        }

    }

    private void enableExplorerControls(boolean isEnabled){

        this.explorersButton.setEnabled(isEnabled);

        this.providersComboBox.setEnabled(isEnabled);

        this.providersButton.setEnabled(isEnabled);

    }

    private void enableProviderControls(boolean isEnabled){

        this.providersButton.setEnabled(isEnabled);

    }

    private void explorersButtonClicked(){

        dataServerExplorer = null;

        String explorerName = (String)explorersComboBox.getSelectedItem();

        if (explorerName != null){

            try {

                if ((dataServerExplorerParameters == null) || (!dataServerExplorerParameters.getExplorerName().equals(explorerName))){

                    dataServerExplorerParameters =

                        DATA_MANAGER.createServerExplorerParameters(explorerName);

                }

                DynObjectEditor dynObjectEditor = new DynObjectEditor(dataServerExplorerParameters);

                dynObjectEditor.editObject(true);

                dataServerExplorer =

                    DATA_MANAGER.openServerExplorer(explorerName, dataServerExplorerParameters);

                //Remove all the previous providers

                removeProvidersCombo();

                populateProvidersCombo();

                this.providersComboBox.setEnabled(true);

            } catch (InitializeException e) {

                LOG.error("Error creating the explorer parameters", e);

            } catch (ProviderNotRegisteredException e) {

                LOG.error("The explorer has not been registered", e);

            } catch (ServiceException e) {

                LOG.error("Error creating the explorer panel", e);

            } catch (ValidateDataParametersException e) {

                LOG.error("Error creating the explorer", e);

            }

        }

    }

    @SuppressWarnings("rawtypes")

    private void populateProvidersCombo(){

        providersComboBox.addItem(null);

        if (dataServerExplorer != null){

            List providerNames = dataServerExplorer.getDataStoreProviderNames();

            for (int i=0 ; i<providerNames.size() ; i++){

                providersComboBox.addItem(providerNames.get(i));

            }

        }

    }

    private void removeProvidersCombo(){

        providersComboBox.removeAllItems();

    }

    private void providersComboSelectionChanged(){

        dataStoreParameters = null;

        String providerName = (String)providersComboBox.getSelectedItem();

        if ((dataServerExplorer != null) && (providerName != null)){

            enableProviderControls(true);

        }else{

            enableProviderControls(false);

        }

    }

    private void providersButtonClicked(){

        String providerName = (String)providersComboBox.getSelectedItem();

        if ((dataServerExplorer != null) && (providerName != null)){

            try {

                if ((dataStoreParameters == null) || (!dataStoreParameters.getDataStoreName().equals(providerName))){

                    dataStoreParameters =

                        DATA_MANAGER.createNewStoreParameters(dataServerExplorer.getProviderName(), providerName);

                }

                DynObjectEditor dynObjectEditor = new DynObjectEditor(dataStoreParameters);

                dynObjectEditor.editObject(true);

            } catch (InitializeException e) {

                LOG.error("Error creating the store parameters", e);

            } catch (ProviderNotRegisteredException e) {

                LOG.error("The provider has not been registered", e);

            } catch (ServiceException e) {

                LOG.error("Error creating the store panel", e);

            }

        }

    }

}