EDIT

/**

* Copyright (C) 2013 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.view.dataimport.e4;

import java.util.ArrayList;

import java.util.Collection;

import javax.annotation.PostConstruct;

import javax.annotation.PreDestroy;

import org.apache.log4j.Logger;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.e4.ui.di.Focus;

import org.eclipse.jface.viewers.CheckboxTableViewer;

import org.eclipse.jface.wizard.IWizard;

import org.eclipse.jface.wizard.WizardDialog;

import org.eclipse.swt.SWT;

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.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Event;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Listener;

import org.eclipse.swt.widgets.Table;

import org.eclipse.swt.widgets.TableItem;

import org.eclipse.swt.widgets.Text;

import org.eclipse.ui.IMemento;

import org.eclipse.ui.forms.widgets.FormToolkit;

import org.eclipse.wb.swt.ResourceManager;

import eu.etaxonomy.cdm.api.conversation.ConversationHolder;

import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;

import eu.etaxonomy.cdm.ext.occurrence.OccurenceQuery;

import eu.etaxonomy.cdm.model.taxon.Classification;

import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;

import eu.etaxonomy.taxeditor.databaseAdmin.wizard.ImportPreferencesWizard;

import eu.etaxonomy.taxeditor.model.IContextListener;

import eu.etaxonomy.taxeditor.model.IPartContentHasDetails;

import eu.etaxonomy.taxeditor.model.IPartContentHasFactualData;

import eu.etaxonomy.taxeditor.model.IPartContentHasSupplementalData;

import eu.etaxonomy.taxeditor.store.CdmStore;

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

/**

 * View which shows a list of "data" that can be imported into the CDM

 * @author pplitzner

 * @date 22.08.2017

 *

 * @param <T> the CDM type that will be handled by this view

 */

public abstract class DataImportViewE4<T> implements IPartContentHasFactualData,

IConversationEnabled, IPartContentHasDetails, IPartContentHasSupplementalData, IContextListener, Listener{

    protected final Logger logger = Logger.getLogger(DataImportViewE4.class);

    protected Collection<T> results = new ArrayList<T>();

    protected boolean updated = false;

    protected OccurenceQuery query;

    private static ConversationHolder conversationHolder;

    private SaveImportedSpecimenActionE4 saveImportedSpecimenAction;

    private Text textClassification;

    private Classification classification;

    private Text textReferenceString;

    private Button toggleButton;

    private Button importButton;

    private boolean state;

    private Button openConfigurator;

    public Classification getClassification() {

		return classification;

	}

	public void setClassification(Classification classification) {

		this.classification = classification;

	}

	private Button btnBrowseClassification;

	private Button btnClear;

    private final FormToolkit toolkit = new FormToolkit(Display.getCurrent());

    private Table table;

    private Composite composite_3;

    /**

     * Constructs a new DataImportEditor and registers it to listen to context changes

     */

    public DataImportViewE4() {

        CdmStore.getContextManager().addContextListener(this);

    }

    /**

     * Create contents of the view part.

     * @param parent

     */

    @PostConstruct

    public void createPartControl(Composite parent) {

        if(CdmStore.isActive()){

            initConversation();

        }

        else{

            return;

        }

        parent.setLayout(new GridLayout(1, false));

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

        composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

//        composite.setBounds(0, 0, 0, 298);

        composite.setLayout(new GridLayout(2, false));

        Composite composite_1 = new Composite(composite, SWT.NONE);

//        gd_composite_1.widthHint = 280;

        composite_1.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false, 1, 1));

        composite_1.setLayout(new GridLayout(3, false));

        Label label = new Label(composite_1, SWT.TOP);

        label.setText("Classification");

        label.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 3, 1));

        textClassification = new Text(composite_1, SWT.BORDER);

        textClassification.setEnabled(false);

        GridData gd_textClassification = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);

//        gd_textClassification.widthHint = 118;

        textClassification.setLayoutData(new GridData(SWT.FILL, SWT.LEFT, true, true));

        btnBrowseClassification = new Button(composite_1, SWT.NONE);

        btnBrowseClassification.setImage(ResourceManager.getPluginImage("eu.etaxonomy.taxeditor.store", "icons/open.gif"));

        btnBrowseClassification.addListener(SWT.Selection, this);

        btnClear = new Button(composite_1, SWT.NONE);

        btnClear.setImage(ResourceManager.getPluginImage("eu.etaxonomy.taxeditor.store", "icons/trash.gif"));

        btnClear.addListener(SWT.Selection, this);

        //source reference

        Label labelRef = new Label(composite_1, SWT.NONE);

        labelRef.setText("Default import souce reference");

        labelRef.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 3, 1));

        textReferenceString = new Text(composite_1, SWT.NONE);

        textReferenceString.setEnabled(true);

        GridData gd_textReferenceString = new GridData(SWT.LEFT, SWT.CENTER, true, true, 3, 1);

        gd_textReferenceString.widthHint = 229;

        textReferenceString.setLayoutData(gd_textReferenceString);

        //open configuration

        openConfigurator = new Button(composite_1, SWT.PUSH);

        openConfigurator.setText("Configuration");

        new Label(composite_1, SWT.NONE);

        new Label(composite_1, SWT.NONE);

        openConfigurator.addSelectionListener(new SelectionAdapter(){

            @Override

            public void widgetSelected(SelectionEvent e) {

                IWizard wizard = new ImportPreferencesWizard();

                WizardDialog dialog = new WizardDialog(e.display.getActiveShell(), wizard);

                dialog.open();

            }

        });

        //checkbox table for result

        Composite composite_2 = new Composite(composite, SWT.NONE);

        composite_2.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

        composite_2.setLayout(new GridLayout(2, false));

        CheckboxTableViewer checkboxTableViewer = CheckboxTableViewer.newCheckList(composite_2, SWT.BORDER | SWT.FULL_SELECTION);

        table = checkboxTableViewer.getTable();

        table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

        toolkit.paintBordersFor(table);

        composite_3 = new Composite(composite_2, SWT.NONE);

//        gd_composite_3.heightHint = 48;

        composite_3.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1));

        toolkit.paintBordersFor(composite_3);

        composite_3.setLayout(new GridLayout(1, false));

        //toggle button

        toggleButton = new Button(composite_3, SWT.PUSH);

        toggleButton.setText("Toggle");

        new Label(composite_2, SWT.NONE);

        Composite composite_4 = new Composite(composite_2, SWT.NONE);

        composite_4.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, 1, 1));

        toolkit.adapt(composite_4);

        toolkit.paintBordersFor(composite_4);

        importButton = new Button(composite_4, SWT.PUSH);

        importButton.setSize(48, 25);

        importButton.setText("Import");

        importButton.addSelectionListener(new SelectionAdapter(){

            @Override

            public void widgetSelected(SelectionEvent e) {

                saveImportedSpecimenAction.run();

            }

        });

        new Label(composite_2, SWT.NONE);

        new Label(composite_2, SWT.NONE);

        new Label(composite_2, SWT.NONE);

        new Label(composite_2, SWT.NONE);

        new Label(composite_2, SWT.NONE);

        new Label(composite_2, SWT.NONE);

        toggleButton.addSelectionListener(new SelectionAdapter(){

            @Override

            public void widgetSelected(SelectionEvent e) {

                state = state ? false : true;

                for (TableItem item: getTable().getItems()){

                    item.setChecked(state);

                }

            }

        });

        //import button

        saveImportedSpecimenAction = new SaveImportedSpecimenActionE4(this);

        initializeToolBar();

    }

    /**

     * Initialize the toolbar.

     */

    private void initializeToolBar() {

        //FIXME E4 migrate

//        IToolBarManager tbm = getViewSite().getActionBars().getToolBarManager();

//        tbm.add(saveImportedSpecimenAction);

    }

    public Table getTable() {

        return table;

    }

    public void setQuery(OccurenceQuery query) {

        this.query = query;

    }

    public void setResults(Collection<T> results) {

        this.results = results;

        updated=false;

    }

    @PreDestroy

    public void dispose() {

        CdmStore.getContextManager().removeContextListener(this);

    }

    @Override

    public void contextRefresh(IProgressMonitor monitor) {

        refresh();

    }

    protected void refresh(){

        if (!updated){

            if (getTable() != null){

                getTable().removeAll();

            }

            if(results!=null){

                for(T item:results){

                    TableItem tableItem = new TableItem(getTable(), SWT.NONE);

                    tableItem.setText(getTextForTableItem(item));

                    tableItem.setData(item);

                }

            }

            updated = true;

        }

    }

    public abstract void query();

    @Override

    public void update(CdmDataChangeMap changeEvents) {

        //nothing

    }

    /**

     * Returns the text label of the given item.

     * @param item the item for which the label should be returns

     * @return the label of the item

     */

    protected abstract String getTextForTableItem(T item);

    @Focus

    public void setFocus() {

        if(getTable()!=null){

            getTable().setFocus();

        }

        //make sure to bind again if maybe in another view the conversation was unbound

        if(getConversationHolder()!=null && !getConversationHolder().isBound()){

            getConversationHolder().bind();

        }

    }

    @Override

    public void contextAboutToStop(IMemento memento, IProgressMonitor monitor) {

    }

    @Override

    public void contextStop(IMemento memento, IProgressMonitor monitor) {

    }

    @Override

    public void contextStart(IMemento memento, IProgressMonitor monitor) {

        initConversation();

    }

    private void initConversation(){

        if(conversationHolder==null){

            conversationHolder = CdmStore.createConversation();

        }

    }

    @Override

    public void workbenchShutdown(IMemento memento, IProgressMonitor monitor) {

        if(getConversationHolder()!=null && getConversationHolder().isBound() && !getConversationHolder().isClosed()) {

            getConversationHolder().close();

        }

    }

    /**

     * @return the conversationHolder

     */

    @Override

    public ConversationHolder getConversationHolder() {

        if(CdmStore.isActive() && conversationHolder==null){

            initConversation();

        }

        return conversationHolder;

    }

    @Override

	public void handleEvent(Event event) {

	    if(event.widget==btnBrowseClassification){

	        classification = SelectionDialogFactory.getSelectionFromDialog(Classification.class, event.widget.getDisplay().getActiveShell(), null, null);

	        if(classification!=null){

	            textClassification.setText(classification.getTitleCache());

	        }

	    }

	    else if(event.widget==btnClear){

	        classification = null;

	        textClassification.setText("");

	    }

	}

    public String getReferenceString() {

        return textReferenceString.getText();

    }

}