EDIT

// $Id$

/**

 * Copyright (C) 2015 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.cdm.vaadin.component;

import java.sql.SQLException;

import java.util.Arrays;

import java.util.Map;

import java.util.UUID;

import com.vaadin.annotations.AutoGenerated;

import com.vaadin.data.Container.Hierarchical;

import com.vaadin.data.Validator.EmptyValueException;

import com.vaadin.data.util.sqlcontainer.RowId;

import com.vaadin.event.Transferable;

import com.vaadin.event.dd.DragAndDropEvent;

import com.vaadin.event.dd.DropHandler;

import com.vaadin.event.dd.acceptcriteria.AcceptAll;

import com.vaadin.event.dd.acceptcriteria.AcceptCriterion;

import com.vaadin.server.Page;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button;

import com.vaadin.ui.Button.ClickEvent;

import com.vaadin.ui.Button.ClickListener;

import com.vaadin.ui.ComboBox;

import com.vaadin.ui.CustomComponent;

import com.vaadin.ui.DragAndDropWrapper;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.Label;

import com.vaadin.ui.Notification;

import com.vaadin.ui.Notification.Type;

import com.vaadin.ui.TextField;

import com.vaadin.ui.TreeTable;

import com.vaadin.ui.UI;

import com.vaadin.ui.VerticalLayout;

import com.vaadin.ui.Window;

import eu.etaxonomy.cdm.vaadin.container.IdUuidName;

import eu.etaxonomy.cdm.vaadin.container.LeafNodeTaxonContainer;

import eu.etaxonomy.cdm.vaadin.presenter.EditConceptRelationshipPresenter;

import eu.etaxonomy.cdm.vaadin.session.BasicEvent;

import eu.etaxonomy.cdm.vaadin.session.CdmChangeEvent;

import eu.etaxonomy.cdm.vaadin.session.CdmChangeEvent.Action;

import eu.etaxonomy.cdm.vaadin.util.CdmVaadinOperation;

import eu.etaxonomy.cdm.vaadin.util.CdmVaadinSessionUtilities;

import eu.etaxonomy.cdm.vaadin.util.CdmVaadinUtilities;

/**

 * @author cmathew

 * @date 13 Apr 2015

 *

 */

public class EditConceptRelationshipComposite extends CustomComponent {

    /*- VaadinEditorProperties={"grid":"RegularGrid,20","showGrid":true,"snapToGrid":true,"snapToObject":true,"movingGuides":false,"snappingDistance":10} */

    @AutoGenerated

    private VerticalLayout mainLayout;

    @AutoGenerated

    private CdmProgressComponent cdmProgressComponent;

    @AutoGenerated

    private HorizontalLayout saveCancelHLayout;

    @AutoGenerated

    private Button cancelButton;

    @AutoGenerated

    private Button saveButton;

    @AutoGenerated

    private HorizontalLayout horizontalLayout;

    @AutoGenerated

    private VerticalLayout typeVLayout;

    @AutoGenerated

    private ComboBox conceptRComboBox;

    @AutoGenerated

    private Label typeLabel;

    @AutoGenerated

    private VerticalLayout fromTaxonVLayout;

    @AutoGenerated

    private Label fromTaxonValue;

    @AutoGenerated

    private Label fromTaxonLabel;

    private VerticalLayout toTaxonVLayout;

    private Label toTaxonLabeL;

    private TextField toTaxonTextField;

    private DragAndDropWrapper toTaxonLayoutWrapper;

    private final EditConceptRelationshipPresenter presenter;

    private IdUuidName fromTaxonIun, taxonRTypeIun, toTaxonIun;

    private UUID relUuid;

    private Window window;

    private final static String CHOOSE_TREL_TYPE = "Choose Type ...";

    private final static String DRAG_TAXON_HINT = "Drag Taxon here ...";

    private Action action;

    public EditConceptRelationshipComposite(IdUuidName fromTaxonIdUuidName,

            IdUuidName taxonRTypeIdUuidName,

            IdUuidName toTaxonIdUuidName,

            Action action) {

        this();

        init(fromTaxonIdUuidName, taxonRTypeIdUuidName, toTaxonIdUuidName, action);

    }

    public EditConceptRelationshipComposite(IdUuidName fromTaxonIun,

            UUID relUuid,

            Action action) {

        this();

        this.relUuid = relUuid;

        Map<String, IdUuidName> map = presenter.getRelTypeToTaxonIunMap(fromTaxonIun.getUuid(), relUuid);

        taxonRTypeIun = map.get(EditConceptRelationshipPresenter.REL_TYPE_KEY);

        toTaxonIun = map.get(EditConceptRelationshipPresenter.TO_TAXON_KEY);

        init(fromTaxonIun, taxonRTypeIun, toTaxonIun, action);

    }

    /**

     * The constructor should first build the main layout, set the

     * composition root and then do any custom initialization.

     *

     * The constructor will not be automatically regenerated by the

     * visual editor.

     */

    public EditConceptRelationshipComposite() {

        buildMainLayout();

        buildToTaxon();

        setCompositionRoot(mainLayout);

        this.presenter = new EditConceptRelationshipPresenter();

        addUIListeners();

    }

    public void init(IdUuidName fromTaxonIdUuidName,

            IdUuidName taxonRTypeIdUuidName,

            IdUuidName toTaxonIdUuidName,

            Action action) {

        this.fromTaxonIun = fromTaxonIdUuidName;

        this.taxonRTypeIun = taxonRTypeIdUuidName;

        this.toTaxonIun = toTaxonIdUuidName;

        this.action = action;

        initFromTaxonLabel();

        initConceptRComboBox();

        initToTaxon();

    }

    public void setWindow(Window window) {

        this.window = window;

    }

    private void initFromTaxonLabel() {

        fromTaxonValue.setValue(fromTaxonIun.getName());

    }

    private void initConceptRComboBox() {

        conceptRComboBox.setImmediate(true);

        conceptRComboBox.setItemCaptionPropertyId("titleCache");

        try {

            conceptRComboBox.setContainerDataSource(presenter.loadTaxonRelationshipTypeContainer());

        } catch (SQLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        if(taxonRTypeIun == null) {

            conceptRComboBox.setInputPrompt(CHOOSE_TREL_TYPE);

        } else {

            conceptRComboBox.setValue(new RowId(taxonRTypeIun.getId()));

        }

        if(action == Action.Delete) {

            conceptRComboBox.setReadOnly(true);

            saveButton.setCaption("ok");

        }

    }

    private void buildToTaxon() {

        toTaxonVLayout = buildToTaxonVLayout();

        toTaxonLayoutWrapper = new DragAndDropWrapper(toTaxonVLayout);

        toTaxonLayoutWrapper.setImmediate(false);

        toTaxonLayoutWrapper.setWidth("-1px");

        toTaxonLayoutWrapper.setHeight("-1px");

        toTaxonTextField.setReadOnly(true);

        toTaxonLayoutWrapper.setDropHandler(new DropHandler() {

            @Override

            public AcceptCriterion getAcceptCriterion() {

                return AcceptAll.get();

            }

            @Override

            public void drop(DragAndDropEvent event) {

                // Wrapper for the object that is dragged

                Transferable t = event.getTransferable();

                // Make sure the drag source is a status composite tree table

                if (action != Action.Delete && t.getSourceComponent() instanceof TreeTable) {

                    TreeTable table = (TreeTable)t.getSourceComponent();

                    Hierarchical containerDataSource = table.getContainerDataSource();

                    if(containerDataSource instanceof LeafNodeTaxonContainer) {

                        LeafNodeTaxonContainer lntc = (LeafNodeTaxonContainer)containerDataSource;

                        Object sourceItemId = t.getData("itemId");

                        String toName = (String)lntc.getProperty(sourceItemId, LeafNodeTaxonContainer.NAME_ID).getValue();

                        toTaxonIun = new IdUuidName(sourceItemId,

                                lntc.getUuid(sourceItemId),

                                toName);

                        toTaxonTextField.setReadOnly(false);

                        toTaxonTextField.setValue(toName);

                        toTaxonTextField.setReadOnly(true);

                    }

                }

            }

        });

        horizontalLayout.addComponent(toTaxonLayoutWrapper);

        horizontalLayout.setComponentAlignment(toTaxonLayoutWrapper, new Alignment(48));

    }

    private void initToTaxon() {

        toTaxonTextField.setReadOnly(false);

        if(toTaxonIun == null) {

            toTaxonTextField.setValue(DRAG_TAXON_HINT);

        } else {

            toTaxonTextField.setValue(toTaxonIun.getName());

        }

        toTaxonTextField.setReadOnly(true);

    }

    private void addUIListeners() {

        addSaveButtonListener();

        addCancelButtonListener();

    }

    private void addSaveButtonListener() {

        saveButton.addClickListener(new ClickListener() {

            @Override

            public void buttonClick(ClickEvent event) {

                try {

                    conceptRComboBox.validate();

                    toTaxonTextField.validate();

                    if(toTaxonIun == null) {

                        // FIXME: Not efficient - figure out a way

                        // of validation including the null check

                        throw new EmptyValueException("");

                    }

                } catch (EmptyValueException e) {

                    Notification notification = new Notification("Invalid input", "Neither Relationship Type nor To Taxon can be empty", Type.WARNING_MESSAGE);

                    notification.setDelayMsec(2000);

                    notification.show(Page.getCurrent());

                    return;

                }

                CdmVaadinUtilities.setEnabled(mainLayout, false, null);

                try {

                    CdmVaadinUtilities.exec(new CdmVaadinOperation(200, cdmProgressComponent) {

                        @Override

                        public boolean execute() {

                            UUID relTypeUuid = presenter.getTaxonRTypeContainer().getUuid(conceptRComboBox.getValue());

                            switch(action) {

                            case Create:

                                setProgress("Saving New Concept Relationship");

                                presenter.createRelationship(fromTaxonIun.getUuid(), relTypeUuid, toTaxonIun.getUuid());

                                registerDelayedEvent(new CdmChangeEvent(Action.Create, Arrays.asList((Object)relTypeUuid), EditConceptRelationshipComposite.class));

                                break;

                            case Update:

                                setProgress("Update Concept Relationship");

                                presenter.updateRelationship(fromTaxonIun.getUuid(), relUuid, relTypeUuid, toTaxonIun.getUuid());

                                registerDelayedEvent(new CdmChangeEvent(Action.Update, Arrays.asList((Object)relTypeUuid), EditConceptRelationshipComposite.class));

                                break;

                            case Delete:

                                setProgress("Deleting Concept Relationship");

                                presenter.deleteRelationship(fromTaxonIun.getUuid(), relUuid);

                                registerDelayedEvent(new CdmChangeEvent(Action.Delete, Arrays.asList((Object)relTypeUuid), EditConceptRelationshipComposite.class));

                                break;

                            default:

                            }

                            return true;

                        }

                        @Override

                        public void postOpUIUpdate(boolean success) {

                            if(success) {

                                if(window != null) {

                                    UI.getCurrent().removeWindow(window);

                                }

                            } else {

                                CdmVaadinUtilities.setEnabled(mainLayout, true, null);

                            }

                        }

                    });

                } finally {

                    CdmVaadinSessionUtilities.getCurrentBasicEventService()

                    .fireBasicEvent(new BasicEvent(ConceptRelationshipComposite.UPDATE_END_ID, EditConceptRelationshipComposite.class), false);

                }

            }

        });

    }

    private void addCancelButtonListener() {

        cancelButton.addClickListener(new ClickListener() {

            @Override

            public void buttonClick(ClickEvent event) {

                if(window != null) {

                    UI.getCurrent().removeWindow(window);

                }

                CdmVaadinSessionUtilities.getCurrentBasicEventService()

                .fireBasicEvent(new BasicEvent(ConceptRelationshipComposite.UPDATE_END_ID, EditConceptRelationshipComposite.class), true);

            }

        });

    }

    private static void showInDialog(String windowTitle,

            EditConceptRelationshipComposite ecrc) {

        Window dialog = new Window(windowTitle);

        dialog.setModal(false);

        dialog.setClosable(false);

        dialog.setResizable(false);

        UI.getCurrent().addWindow(dialog);

        ecrc.setWindow(dialog);

        dialog.setContent(ecrc);

    }

    public static void showInDialog(String windowTitle,

            IdUuidName fromTaxonIun,

            IdUuidName taxonRTypeIun,

            IdUuidName toTaxonIun,

            Action action) {

        EditConceptRelationshipComposite ecrc = new EditConceptRelationshipComposite(fromTaxonIun, taxonRTypeIun, toTaxonIun,action);

        showInDialog(windowTitle, ecrc);

    }

    public static void showInDialog(String windowTitle,

            IdUuidName fromTaxonIun,

            UUID relUuid,

            Action action) {

        EditConceptRelationshipComposite ecrc = new EditConceptRelationshipComposite(fromTaxonIun, relUuid,action);

        showInDialog(windowTitle, ecrc);

    }

    private VerticalLayout buildToTaxonVLayout() {

        // common part: create layout

        toTaxonVLayout = new VerticalLayout();

        toTaxonVLayout.setImmediate(false);

        toTaxonVLayout.setWidth("-1px");

        toTaxonVLayout.setHeight("-1px");

        toTaxonVLayout.setMargin(false);

        toTaxonVLayout.setSpacing(true);

        // toTaxonLabeL

        toTaxonLabeL = new Label();

        toTaxonLabeL.setImmediate(false);

        toTaxonLabeL.setWidth("-1px");

        toTaxonLabeL.setHeight("-1px");

        toTaxonLabeL.setValue("To Taxon");

        toTaxonVLayout.addComponent(toTaxonLabeL);

        toTaxonVLayout.setComponentAlignment(toTaxonLabeL, new Alignment(48));

        // toTaxonTextField

        toTaxonTextField = new TextField();

        toTaxonTextField.setImmediate(false);

        toTaxonTextField.setWidth("-1px");

        toTaxonTextField.setHeight("-1px");

        toTaxonTextField.setInvalidAllowed(false);

        toTaxonTextField.setRequired(true);

        toTaxonTextField.setInputPrompt("Drag Taxon here ...");

        toTaxonVLayout.addComponent(toTaxonTextField);

        toTaxonVLayout.setComponentAlignment(toTaxonTextField, new Alignment(48));

        return toTaxonVLayout;

    }

    @AutoGenerated

    private VerticalLayout buildMainLayout() {

        // common part: create layout

        mainLayout = new VerticalLayout();

        mainLayout.setImmediate(false);

        mainLayout.setWidth("602px");

        mainLayout.setHeight("170px");

        mainLayout.setMargin(false);

        mainLayout.setSpacing(true);

        // top-level component properties

        setWidth("602px");

        setHeight("170px");

        // horizontalLayout

        horizontalLayout = buildHorizontalLayout();

        mainLayout.addComponent(horizontalLayout);

        // saveCancelHLayout

        saveCancelHLayout = buildSaveCancelHLayout();

        mainLayout.addComponent(saveCancelHLayout);

        mainLayout.setComponentAlignment(saveCancelHLayout, new Alignment(48));

        // cdmProgressComponent

        cdmProgressComponent = new CdmProgressComponent();

        cdmProgressComponent.setImmediate(false);

        cdmProgressComponent.setWidth("-1px");

        cdmProgressComponent.setHeight("-1px");

        mainLayout.addComponent(cdmProgressComponent);

        mainLayout.setComponentAlignment(cdmProgressComponent, new Alignment(48));

        return mainLayout;

    }

    @AutoGenerated

    private HorizontalLayout buildHorizontalLayout() {

        // common part: create layout

        horizontalLayout = new HorizontalLayout();

        horizontalLayout.setImmediate(false);

        horizontalLayout.setWidth("602px");

        horizontalLayout.setHeight("-1px");

        horizontalLayout.setMargin(true);

        horizontalLayout.setSpacing(true);

        // fromTaxonVLayout

        fromTaxonVLayout = buildFromTaxonVLayout();

        horizontalLayout.addComponent(fromTaxonVLayout);

        horizontalLayout.setComponentAlignment(fromTaxonVLayout, new Alignment(48));

        // typeVLayout

        typeVLayout = buildTypeVLayout();

        horizontalLayout.addComponent(typeVLayout);

        horizontalLayout.setExpandRatio(typeVLayout, 1.0f);

        horizontalLayout.setComponentAlignment(typeVLayout, new Alignment(48));

        return horizontalLayout;

    }

    @AutoGenerated

    private VerticalLayout buildFromTaxonVLayout() {

        // common part: create layout

        fromTaxonVLayout = new VerticalLayout();

        fromTaxonVLayout.setImmediate(false);

        fromTaxonVLayout.setWidth("-1px");

        fromTaxonVLayout.setHeight("-1px");

        fromTaxonVLayout.setMargin(false);

        fromTaxonVLayout.setSpacing(true);

        // fromTaxonLabel

        fromTaxonLabel = new Label();

        fromTaxonLabel.setImmediate(false);

        fromTaxonLabel.setWidth("-1px");

        fromTaxonLabel.setHeight("-1px");

        fromTaxonLabel.setValue("From Taxon");

        fromTaxonVLayout.addComponent(fromTaxonLabel);

        fromTaxonVLayout.setComponentAlignment(fromTaxonLabel, new Alignment(48));

        // fromTaxonValue

        fromTaxonValue = new Label();

        fromTaxonValue.setImmediate(false);

        fromTaxonValue.setWidth("-1px");

        fromTaxonValue.setHeight("-1px");

        fromTaxonValue.setValue("Taxon Name");

        fromTaxonVLayout.addComponent(fromTaxonValue);

        fromTaxonVLayout.setComponentAlignment(fromTaxonValue, new Alignment(48));

        return fromTaxonVLayout;

    }

    @AutoGenerated

    private VerticalLayout buildTypeVLayout() {

        // common part: create layout

        typeVLayout = new VerticalLayout();

        typeVLayout.setImmediate(false);

        typeVLayout.setWidth("-1px");

        typeVLayout.setHeight("-1px");

        typeVLayout.setMargin(false);

        typeVLayout.setSpacing(true);

        // typeLabel

        typeLabel = new Label();

        typeLabel.setImmediate(false);

        typeLabel.setWidth("-1px");

        typeLabel.setHeight("-1px");

        typeLabel.setValue("Type");

        typeVLayout.addComponent(typeLabel);

        typeVLayout.setComponentAlignment(typeLabel, new Alignment(48));

        // conceptRComboBox

        conceptRComboBox = new ComboBox();

        conceptRComboBox.setImmediate(false);

        conceptRComboBox.setWidth("-1px");

        conceptRComboBox.setHeight("-1px");

        conceptRComboBox.setRequired(true);

        typeVLayout.addComponent(conceptRComboBox);

        typeVLayout.setComponentAlignment(conceptRComboBox, new Alignment(48));

        return typeVLayout;

    }

    @AutoGenerated

    private HorizontalLayout buildSaveCancelHLayout() {

        // common part: create layout

        saveCancelHLayout = new HorizontalLayout();

        saveCancelHLayout.setImmediate(false);

        saveCancelHLayout.setWidth("-1px");

        saveCancelHLayout.setHeight("-1px");

        saveCancelHLayout.setMargin(false);

        saveCancelHLayout.setSpacing(true);

        // saveButton

        saveButton = new Button();

        saveButton.setCaption("save");

        saveButton.setImmediate(true);

        saveButton.setWidth("-1px");

        saveButton.setHeight("-1px");

        saveCancelHLayout.addComponent(saveButton);

        // cancelButton

        cancelButton = new Button();

        cancelButton.setCaption("cancel");

        cancelButton.setImmediate(true);

        cancelButton.setWidth("-1px");

        cancelButton.setHeight("-1px");

        saveCancelHLayout.addComponent(cancelButton);

        return saveCancelHLayout;

    }

}