EDIT

// $Id$

/**

* Copyright (C) 2016 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.databasePreferences.wizard;

import java.util.List;

import org.eclipse.jface.preference.BooleanFieldEditor;

import org.eclipse.jface.preference.ComboFieldEditor;

import org.eclipse.jface.preference.FieldEditorPreferencePage;

import org.eclipse.jface.preference.IPreferenceStore;

import org.eclipse.jface.wizard.IWizard;

import org.eclipse.jface.wizard.IWizardPage;

import org.eclipse.ui.IWorkbench;

import org.eclipse.ui.IWorkbenchPreferencePage;

import eu.etaxonomy.cdm.api.application.ICdmApplicationConfiguration;

import eu.etaxonomy.cdm.api.service.IPreferenceService;

import eu.etaxonomy.cdm.model.metadata.CdmPreference;

import eu.etaxonomy.cdm.model.metadata.PreferencePredicate;

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

import eu.etaxonomy.taxeditor.model.NomenclaturalCodeHelper;

import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.store.internal.TaxeditorStorePlugin;

/**

 * @author k.luther

 * @date 01.11.2016

 *

 */

public class DatabasePreferencesPage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage, IWizardPage {

    /**

     * The wizard to which this page belongs; <code>null</code>

     * if this page has yet to be added to a wizard.

     */

    private IWizard wizard = null;

    /**

     * Indicates whether this page is complete.

     */

    private boolean isPageComplete = true;

    /**

     * The page that was shown right before this page became visible;

     * <code>null</code> if none.

     */

    private IWizardPage previousPage = null;

    CdmPreference preferedNomenclaturalCode;

    /*

     *

     */

    public DatabasePreferencesPage() {

        this.noDefaultAndApplyButton();

    }

    /* (non-Javadoc)

     * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)

     */

    @Override

    public void init(IWorkbench workbench) {

        setPreferenceStore(TaxeditorStorePlugin.getDefault()

                .getPreferenceStore());

        preferedNomenclaturalCode = PreferencesUtil.setPreferredNomenclaturalCode(null, false);

        if (super.getPreferenceStore()== null){

            setPreferenceStore(PreferencesUtil.getPreferenceStore());

        }

    }

    /* (non-Javadoc)

     * @see org.eclipse.jface.preference.FieldEditorPreferencePage#createFieldEditors()

     */

    @Override

    protected void createFieldEditors() {

        setMessage("Choose which nomenclatural code you would like to use for scientific names unless otherwise specified.");

        ComboFieldEditor nomenclaturalCode = new ComboFieldEditor(

                IPreferenceKeys.CDM_NOMENCLATURAL_CODE_KEY,

                "Available Codes", getLabelAndValues(),

                getFieldEditorParent());

        nomenclaturalCode.setPreferenceStore(PreferencesUtil.getPreferenceStore());

        addField(nomenclaturalCode);

        BooleanFieldEditor allowOverride = new BooleanFieldEditor(

                IPreferenceKeys.ALLOW_OVERRIDE_NOMENCLATURAL_CODE_KEY,

                "allow to use local preference",

                getFieldEditorParent());

        allowOverride.setPreferenceStore(PreferencesUtil.getPreferenceStore());

        addField(allowOverride);

    }

    /**

     * Returns the preference store of this preference page.

     * <p>

     * This is a framework hook method for subclasses to return a

     * page-specific preference store. The default implementation

     * returns <code>null</code>.

     * </p>

     *

     * @return the preference store, or <code>null</code> if none

     */

    @Override

    protected IPreferenceStore doGetPreferenceStore() {

        return PreferencesUtil.getPreferenceStore();

    }

    /**

     * @return

     */

    private String[][] getLabelAndValues() {

        List<NomenclaturalCode> supportedCodes = NomenclaturalCodeHelper

                .getSupportedCodes();

        String[][] labelAndValues = new String[supportedCodes.size()][2];

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

            labelAndValues[i][0] = NomenclaturalCodeHelper

                    .getDescription(supportedCodes.get(i));

            labelAndValues[i][1] = PreferencesUtil

                    .getPreferenceKey(supportedCodes.get(i));

        }

        return labelAndValues;

    }

    @Override

    public boolean performOk() {

       if (super.getPreferenceStore()== null){

           setPreferenceStore(PreferencesUtil.getPreferenceStore());

       }

       boolean result = super.performOk();

       if (result){

           String value =getPreferenceStore().getString(IPreferenceKeys.CDM_NOMENCLATURAL_CODE_KEY);

           boolean allowOverride =  getPreferenceStore().getBoolean(IPreferenceKeys.ALLOW_OVERRIDE_NOMENCLATURAL_CODE_KEY);

           CdmPreference pref = CdmPreference.NewDatabaseInstance( PreferencePredicate.NomenclaturalCode, value);

           pref.setAllowOverride(allowOverride);

           ICdmApplicationConfiguration controller = CdmStore.getCurrentApplicationConfiguration();

           if (controller == null){

               return false;

           }

           IPreferenceService service = controller.getPreferenceService();

           service.set(pref);

       }

       return result;

   }

    /**

     * {@inheritDoc}

     */

    @Override

    public boolean canFlipToNextPage() {

        // TODO Auto-generated method stub

        return true;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public String getName() {

        return "Database Preferences";

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public IWizardPage getNextPage() {

        // TODO Auto-generated method stub

        return null;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public IWizardPage getPreviousPage() {

        return previousPage;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public IWizard getWizard() {

        return wizard;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public boolean isPageComplete() {

        return isPageComplete;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void setPreviousPage(IWizardPage page) {

        this.previousPage = page;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void setWizard(IWizard newWizard) {

        this.wizard = newWizard;

    }

}