EDIT

/**

* Copyright (C) 2018 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.preference.wizard;

import java.util.ArrayList;

import java.util.List;

import java.util.UUID;

import org.apache.commons.lang.StringUtils;

import org.eclipse.jface.util.IPropertyChangeListener;

import org.eclipse.jface.util.PropertyChangeEvent;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Text;

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

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

import eu.etaxonomy.cdm.model.location.NamedArea;

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

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

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

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

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

import eu.etaxonomy.cdm.model.term.DefinedTermBase;

import eu.etaxonomy.cdm.persistence.dto.TermDto;

import eu.etaxonomy.cdm.persistence.dto.TermVocabularyDto;

import eu.etaxonomy.taxeditor.l10n.Messages;

import eu.etaxonomy.taxeditor.model.ImageResources;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.preference.Resources;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.store.StoreUtil;

import eu.etaxonomy.taxeditor.ui.dialog.selection.SelectionDialogFactory;

/**

 * @author k.luther

 * @since 05.10.2018

 *

 */

public class AvailableDistributionPerAreaStatusPage extends AvailableDistributionStatusPage implements IPropertyChangeListener{

    List<CdmPreference> perAreaPreferences = new ArrayList();

    NamedArea actualArea;

    CdmPreference actualPref;

    Text areaText;

    Button btnSelectArea;

    Button btnRemove;

    Label status;

    int countTerms;

    public AvailableDistributionPerAreaStatusPage(String pageName, List<CdmPreference> prefs, boolean localPref) {

        super(pageName, null, localPref);

        perAreaPreferences = prefs;

        if(PreferencesUtil.getPreferenceFromDB(PreferencePredicate.AvailableDistributionAreaVocabularies) == null && PreferencesUtil.getStringValue(PreferencePredicate.AvailableDistributionAreaVocabularies.getKey()) == null){

            vocs = CdmStore.getService(IVocabularyService.class).findVocabularyDtoByTermType(type);

        }

        pref = PreferencesUtil.getPreferenceFromDB(PreferencePredicate.AvailableDistributionStatus);

        if (pref == null){

            pref = CdmPreference.NewTaxEditorInstance(PreferencePredicate.AvailableDistributionStatus, null);

        }

        initialiseVocabularies();

        countTerms = CdmStore.getTermManager().getPreferredTerms(type).size();

    }

    @Override

    public void createControl(Composite parent) {

        setTitle(Messages.AvailableDistributionStatusPage_PAGE_TITLE);

        setDescription(Messages.AvailableDistributionStatusPage_PAGE_DESCRIPTION);

        createAreaSelectionCombo(parent);

        super.createControl(parent);

    }

    protected void createAreaSelectionCombo(Composite parent) {

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

        toolbar.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, false, 1, 1));

        GridLayout gl_toolbar = new GridLayout(4, false);

        gl_toolbar.horizontalSpacing = 4;

        gl_toolbar.marginHeight = 0;

        gl_toolbar.verticalSpacing = 0;

        toolbar.setLayout(gl_toolbar);

        Label areaLabel = new Label(toolbar, SWT.NONE);

        areaLabel.setText("Select area for area specific status");

        GridData textData = new GridData();

        textData.minimumWidth = 200;

        textData.widthHint = 200;

        areaText = new Text(toolbar,  SWT.NONE);

        areaText.setEditable(false);

        areaText.setBackground(StoreUtil

                .getColor(Resources.COLOR_TEXT_DISABLED_BACKGROUND));

        areaText.setLayoutData(textData);

        btnSelectArea = new Button(toolbar, SWT.PUSH | SWT.FLAT );

        btnSelectArea.setImage(ImageResources

                .getImage(ImageResources.BROWSE_ICON));

        btnSelectArea.setToolTipText("Browse Area");

        btnSelectArea.addSelectionListener(new SelectionListener(){

            @Override

            public void widgetSelected(SelectionEvent e) {

                refreshActualPrefernce();

                NamedArea selection = SelectionDialogFactory.getSelectionFromDialog(NamedArea.class, getShell(), //getConversationHolder(),

                        actualArea, null);

                actualArea = selection;

                PrefKey key;

                if (actualArea != null){

                    areaText.setText(actualArea.getLabel());

                    if (actualPref == null){

                        actualPref = CdmPreference.NewInstance(key, null);

                        perAreaPreferences.add(actualPref);

                    }

                }else{

                    actualPref = null;

                }

                status.setVisible(false);

                rememberCheckedValues(getCheckedValuesFromPreferences());

            }

            @Override

            public void widgetDefaultSelected(SelectionEvent e) {

                // TODO Auto-generated method stub

            }

        });

        btnRemove = new Button(toolbar, SWT.NONE);

        btnRemove.addSelectionListener(new SelectionListener(){

            @Override

            public void widgetSelected(SelectionEvent e) {

                actualPref = CdmPreference.NewInstance(key, null);

                perAreaPreferences.add(actualPref);

                status.setText("Preference for area " + actualArea.getLabel() + " removed.");

                status.setVisible(true);

                rememberCheckedValues(getCheckedValuesFromPreferences());

            }

            @Override

            public void widgetDefaultSelected(SelectionEvent e) {

                // TODO Auto-generated method stub

            }

        });

        btnRemove.setImage(ImageResources.getImage(ImageResources.ACTIVE_DELETE_ICON));

        btnRemove.setToolTipText("");

        status = new Label(toolbar, SWT.NONE);

        status.setVisible(false);

    }

    @Override

    public void propertyChange(PropertyChangeEvent event) {

        if(event == null){

            return;

        }

        Object eventSource = event.getSource();

        if(eventSource != this && btnSelectArea.equals(eventSource)){

            if (actualArea != null){

                areaText.setText(actualArea.getLabel());

            }else{

                actualPref = null;

            }

        }

    }

    @Override

    protected String getCheckedValuesFromPreferences() {

       String checkedValues = null;

       if (actualArea == null){

           checkedValues = pref.getValue();

       }else{

           if (actualPref == null){

               if (actualPref == null){

                   actualPref = CdmPreference.NewInstance(key, null);

                   checkedValues = PreferencesUtil.getStringValue(PreferencePredicate.AvailableDistributionStatus.getKey(), true);

               }

           }

           checkedValues = actualPref.getValue();

       }

       return checkedValues;

    }

    protected void refreshActualPrefernce(){

        String saveCheckedElements;

        getViewer().expandAll();

        if (countTerms == getViewer().getCheckedElements().length){

            saveCheckedElements = null;

        }else{

            Object[] checkedElements = getViewer().getCheckedElements();

            List<UUID> listUIIDChecked = new ArrayList<>();

            List<DefinedTermBase> preferredTerms = new ArrayList<>();

            for (Object o : checkedElements) {

                 if(o instanceof TermDto){

                     TermDto termDto = (TermDto) o;

                     listUIIDChecked.add(termDto.getUuid());

                     preferredTerms.add(CdmStore.getService(ITermService.class).load(termDto.getUuid()));

                 }

             }

             saveCheckedElements = StringUtils.join(listUIIDChecked, ";"); //$NON-NLS-1$

             if (StringUtils.isBlank(saveCheckedElements)){

                 saveCheckedElements = null;

         }

        }

        if (actualArea == null){

            CdmPreference savePref = CdmPreference.NewTaxEditorInstance(PreferencePredicate.AvailableDistributionStatus, saveCheckedElements);

            savePref.setAllowOverride(pref.isAllowOverride());

            pref = savePref;

        }else{

               perAreaPreferences.remove(actualPref);

            }

            perAreaPreferences.add(savePref);

            actualPref = savePref;

        }

    }

    @Override

    protected  List<TermVocabularyDto> getVocabulariesFromPreference(){

     return null;

    }

        PrefKey prefKey = CdmPreference.NewKey(PreferenceSubject.NewInstance(PreferenceSubject.ROOT+"NamedArea["+actualArea.getUuid().toString()+"]"+PreferenceSubject.SEP), PreferencePredicate.AvailableDistributionStatus);

        return prefKey;

    }