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.view;

import java.util.Arrays;

import java.util.UUID;

import com.vaadin.annotations.AutoGenerated;

import com.vaadin.data.Container;

import com.vaadin.event.Transferable;

import com.vaadin.event.dd.DragAndDropEvent;

import com.vaadin.event.dd.DropHandler;

import com.vaadin.event.dd.DropTarget;

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

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

import com.vaadin.navigator.View;

import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;

import com.vaadin.ui.AbstractSelect.AbstractSelectTargetDetails;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Component;

import com.vaadin.ui.CustomComponent;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.TreeTable;

import eu.etaxonomy.cdm.vaadin.component.ConceptRelationshipComposite;

import eu.etaxonomy.cdm.vaadin.component.EditConceptRelationshipComposite;

import eu.etaxonomy.cdm.vaadin.component.StatusComposite;

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

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

import eu.etaxonomy.cdm.vaadin.jscomponent.D3ConceptRelationshipTree.Direction;

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

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

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

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

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

/**

 * @author cmathew

 * @date 9 Apr 2015

 *

 */

public class ConceptRelationshipView extends CustomComponent implements View, IBasicEventListener {

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

    @AutoGenerated

    private HorizontalLayout mainLayout;

    @AutoGenerated

    private StatusComposite statusCompositeRight;

    @AutoGenerated

    private ConceptRelationshipComposite conceptRelationshipComposite;

    @AutoGenerated

    private StatusComposite statusCompositeLeft;

    private StatusComposite primaryStatusComposite, secondaryStatusComposite;

    private Direction direction;

    /**

     * 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 ConceptRelationshipView() {

        buildMainLayout();

        setCompositionRoot(mainLayout);

        conceptRelationshipComposite.setView(this);

        conceptRelationshipComposite.setSizeFull();

        setPrimaryStatusCompositeUuid(statusCompositeLeft.getSelectedClassificationUuid());

        direction = Direction.LEFT_RIGHT;

        CdmVaadinSessionUtilities.getCurrentBasicEventService().register(this);

        initDropHandlers();

    }

    /* (non-Javadoc)

     * @see com.vaadin.navigator.View#enter(com.vaadin.navigator.ViewChangeListener.ViewChangeEvent)

     */

    @Override

    public void enter(ViewChangeEvent event) {

    }

    public Direction getDirection() {

        return direction;

    }

    public void initDropHandlers() {

        statusCompositeLeft.getTaxaTreeTable().setDropHandler(new ConceptRelationshipDropHandler(statusCompositeRight));

        statusCompositeRight.getTaxaTreeTable().setDropHandler(new ConceptRelationshipDropHandler(statusCompositeLeft));

    }

    public void setPrimaryStatusCompositeUuid(UUID scUuid) {

        if(scUuid != null) {

            if(scUuid.equals(statusCompositeLeft.getSelectedClassificationUuid())) {

                primaryStatusComposite = statusCompositeLeft;

                secondaryStatusComposite = statusCompositeRight;

                direction = Direction.LEFT_RIGHT;

            }

            if(scUuid.equals(statusCompositeRight.getSelectedClassificationUuid())) {

                secondaryStatusComposite = statusCompositeLeft;

                primaryStatusComposite = statusCompositeRight;

                direction = Direction.RIGHT_LEFT;

            }

            secondaryStatusComposite.clearTaxaTableSelections();

        }

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.cdm.vaadin.session.IBasicEventListener#onAction(eu.etaxonomy.cdm.vaadin.session.BasicEvent)

     */

    @Override

    public void onAction(BasicEvent event) {

        if(ConceptRelationshipComposite.UPDATE_START_ID.equals(event.getEventId())) {

            primaryStatusComposite.setTaxaTableEnabled(false);

            secondaryStatusComposite.setTaxaTableSelectable(false);

        }

        if(ConceptRelationshipComposite.UPDATE_END_ID.equals(event.getEventId())) {

            primaryStatusComposite.setTaxaTableEnabled(true);

            secondaryStatusComposite.setTaxaTableSelectable(true);

        }

    }

    @AutoGenerated

    private HorizontalLayout buildMainLayout() {

        // common part: create layout

        mainLayout = new HorizontalLayout();

        mainLayout.setImmediate(false);

        mainLayout.setWidth("100%");

        mainLayout.setHeight("100%");

        mainLayout.setMargin(true);

        // top-level component properties

        setWidth("100.0%");

        setHeight("100.0%");

        // statusCompositeLeft

        statusCompositeLeft = new StatusComposite();

        statusCompositeLeft.setImmediate(false);

        statusCompositeLeft.setWidth("-1px");

        statusCompositeLeft.setHeight("-1px");

        mainLayout.addComponent(statusCompositeLeft);

        // conceptRelationshipComposite

        conceptRelationshipComposite = new ConceptRelationshipComposite();

        conceptRelationshipComposite.setImmediate(false);

        conceptRelationshipComposite.setWidth("-1px");

        conceptRelationshipComposite.setHeight("-1px");

        mainLayout.addComponent(conceptRelationshipComposite);

        mainLayout.setExpandRatio(conceptRelationshipComposite, 1.0f);

        mainLayout.setComponentAlignment(conceptRelationshipComposite, new Alignment(20));

        // statusCompositeRight

        statusCompositeRight = new StatusComposite();

        statusCompositeRight.setImmediate(false);

        statusCompositeRight.setWidth("-1px");

        statusCompositeRight.setHeight("-1px");

        mainLayout.addComponent(statusCompositeRight);

        return mainLayout;

    }

    private class ConceptRelationshipDropHandler implements DropHandler {

        private StatusComposite sourceSc;

        public ConceptRelationshipDropHandler(StatusComposite sourceSc) {

            this.sourceSc = sourceSc;

        }

        @Override

        public AcceptCriterion getAcceptCriterion() {

            return AcceptAll.get();

        }

        @Override

        public void drop(DragAndDropEvent event) {

            // Wrapper for the object that is dragged

            Transferable t = event.getTransferable();

            Component source = t.getSourceComponent();

            // This is the case where the source of the dd is another

            // taxon table not the one in this object

            if (source instanceof TreeTable  && source == sourceSc.getTaxaTreeTable()) {

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

                LeafNodeTaxonContainer sourceContainer = (LeafNodeTaxonContainer)sourceTable.getContainerDataSource();

                IdUuidName fromTaxonIun, toTaxonIun;

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

                String fromName = (String)sourceContainer.getProperty(sourceItemId, LeafNodeTaxonContainer.NAME_ID).getValue();

                AbstractSelectTargetDetails dropData = ((AbstractSelectTargetDetails) event.getTargetDetails());

                DropTarget target = dropData.getTarget();

                if(target instanceof TreeTable) {

                    TreeTable targetTable = (TreeTable)target;

                    Container container = targetTable.getContainerDataSource();

                    if(container instanceof LeafNodeTaxonContainer) {

                        LeafNodeTaxonContainer targetContainer = (LeafNodeTaxonContainer)container;

                        Object targetItemId = dropData.getItemIdOver();

                        String toName = (String)targetContainer.getProperty(targetItemId, LeafNodeTaxonContainer.NAME_ID).getValue();

                        fromTaxonIun = new IdUuidName(sourceItemId,

                                sourceContainer.getUuid(sourceItemId),

                                fromName);

                        toTaxonIun = new IdUuidName(targetItemId,

                                targetContainer.getUuid(targetItemId),

                                toName);

                        CdmVaadinSessionUtilities.getCurrentSelectionService()

                        .fireSelectionEvent(new SelectionEvent(Arrays.asList(fromTaxonIun, sourceSc.getSelectedClassificationUuid()), StatusComposite.class), false);

                        EditConceptRelationshipComposite.showInDialog(ConceptRelationshipComposite.CREATE_NEW_CR_TITLE,

                                fromTaxonIun,

                                null,

                                toTaxonIun,

                                CdmChangeEvent.Action.Create,

                                direction);

                    }

                }

            }

        }

    }

}