EDIT

// $Id$

/**

 * 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.

 */

import java.util.List;

import com.vaadin.data.Property;

import com.vaadin.data.Property.ValueChangeEvent;

import com.vaadin.data.Property.ValueChangeListener;

import com.vaadin.ui.AbstractLayout;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button.ClickEvent;

import com.vaadin.ui.Button.ClickListener;

import com.vaadin.ui.ComboBox;

import com.vaadin.ui.HorizontalLayout;

import com.vaadin.ui.ListSelect;

import com.vaadin.ui.Tree.ExpandListener;

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

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

/**

 *

 */

    private ComboBox classificationBox;

    private ListSelect namedAreaList;

     * 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 DistributionSettingsConfigWindow(DistributionTableView distributionTableView) {

        Classification classification = presenter.getChosenClassification();

            classificationBox.setContainerDataSource(new CdmSQLContainer(CdmQueryFactory.generateTableQuery("Classification")));

        } catch (SQLException e) {

            DistributionEditorUtil.showSqlError(e);

        }

        if(classification!=null){

        	parent = new RowId(classification.getRootNode().getId());

        }

        else if(classificationBox.getItemIds().size()==1){

            classificationBox.setValue(new RowId(parent.getId()));

            showClassificationTaxa(getUuidAndTitleCacheFromRowId(parent));

        distAreaBox.setContainerDataSource(presenter.getDistributionContainer());

        distAreaBox.addValueChangeListener(this);

            namedAreaList.setContainerDataSource(container);

        Object selectedAreas = VaadinSession.getCurrent().getAttribute(DistributionEditorUtil.SATTR_SELECTED_AREAS);

        namedAreaList.setValue(selectedAreas);

        cancelButton.addClickListener(this);

        leftAndRightContainer.setSizeFull();

        leftAndRightContainer.setMargin(true);

        leftAndRightContainer.setSpacing(true);

        VerticalLayout leftContainer = new VerticalLayout();

        leftContainer.setImmediate(false);

        leftContainer.setSpacing(true);

        VerticalLayout rightContainer = new VerticalLayout();

        rightContainer.setImmediate(false);

        rightContainer.setSpacing(true);

        classificationBox.setInputPrompt("Please select a classification...");

        classificationBox.setNullSelectionAllowed(false);

        taxonFilter = new TextField("Filter");

        taxonFilter.setInputPrompt("Filter taxa by name...");

        taxonFilter.setSizeFull();

        taxonFilter.setImmediate(true);

        distAreaBox = new ComboBox("Distribution Area:");

        distAreaBox.setNewItemsAllowed(false);

        distAreaBox.setSizeFull();

        // named areas

        namedAreaList = new ListSelect();

        namedAreaList.setCaption("Areas");

        //taxonomy

        taxonTree.setSelectable(true);

        taxonTree.setSizeFull();

        taxonTree.setImmediate(true);

        taxonTree.setCacheRate(20);

        taxonTree.setColumnHeaderMode(ColumnHeaderMode.HIDDEN);

        leftContainer.addComponent(distAreaBox);

        leftContainer.addComponent(namedAreaList);

        rightContainer.setExpandRatio(taxonTree, 0.8f);

        leftAndRightContainer.addComponent(rightContainer);

        //button toolbar

        mainLayout.setExpandRatio(buttonToolBar, 0.1f);

    public void valueChange(ValueChangeEvent event) {

        Property property = event.getProperty();

        if(property==classificationBox){

        }

        else if(property==taxonFilter){

            String filterText = taxonFilter.getValue();

            if(uuidProperty==null){

            	Notification.show("Please select a classification");

            else{

            		UUID classificationUuid = UUID.fromString((String) uuidProperty.getValue());

            		List<UuidAndTitleCache<TaxonNode>> taxa = CdmSpringContextHelper.getTaxonNodeService().getUuidAndTitleCache(null, filterText, classificationUuid);

            		BeanItemContainer<UuidAndTitleCache<TaxonNode>> container = new BeanItemContainer<>(UuidAndTitleCache.class);

            		taxonTree.setContainerDataSource(container);

            		for (UuidAndTitleCache<TaxonNode> taxon : taxa) {

            			container.addItem(taxon);

            			taxonTree.setChildrenAllowed(taxon, false);

            		}

            		taxonTree.setVisibleColumns("titleCache");

            	}

            	else{

            		UuidAndTitleCache<TaxonNode> parent = getUuidAndTitleCacheFromRowId(classificationBox.getValue());

            		showClassificationTaxa(parent);

            	}

        }

        else if(property==distAreaBox){

            TermVocabulary<NamedArea> vocabulary = (TermVocabulary<NamedArea>) event.getProperty().getValue();

            NamedAreaContainer container = new NamedAreaContainer(vocabulary);

            namedAreaList.setContainerDataSource(container);

        }

        updateButtons();

    }

    @Override

    protected boolean isValid() {

        return classificationBox.getValue()!=null && distAreaBox.getValue()!=null;

    }

    @Override

    public void buttonClick(ClickEvent event) {

        Object source = event.getSource();

        if(source==okButton){

            UUID classificationUuid = UUID.fromString(uuidString);

            Set<UuidAndTitleCache<TaxonNode>> treeSelection = (Set<UuidAndTitleCache<TaxonNode>>) taxonTree.getValue();

			if(!treeSelection.isEmpty()){

				for (UuidAndTitleCache<TaxonNode> uuidAndTitleCache : treeSelection) {

					taxonNodes.add(uuidAndTitleCache.getUuid());

				}

            term = (TermVocabulary<NamedArea>) distAreaBox.getValue();

            Set<NamedArea> selectedAreas = (Set<NamedArea>) namedAreaList.getValue();

        }

        else if(source==cancelButton){

            window.close();

        }

    }

    @Override

    public void nodeExpand(ExpandEvent event) {

        UuidAndTitleCache<TaxonNode> parent = (UuidAndTitleCache<TaxonNode>) event.getItemId();

        // Enable polling and set frequency to 0.5 seconds

        UI.getCurrent().setPollInterval(500);

        taxonTree.setEnabled(false);

        new TreeUpdater(children).start();

    private UuidAndTitleCache<TaxonNode> getUuidAndTitleCacheFromRowId(Object classificationSelection) {

        String uuidString = (String) classificationBox.getContainerProperty(classificationSelection, "uuid").getValue();

        UUID uuid = UUID.fromString(uuidString);

        UuidAndTitleCache<TaxonNode> parent = new UuidAndTitleCache<>(uuid, id, titleCache);

        return parent;

    }

			this.children = children;

		}

		@Override

    	public void run() {

			UI.getCurrent().access(new Runnable() {

				@Override

				public void run() {

					taxonTree.setContainerDataSource(new TaxonNodeContainer(children));

			        Notification notification = new Notification("Loading complete");

			        notification.setDelayMsec(500);

			        notification.show(Page.getCurrent());

			        taxonTree.setEnabled(true);

			        //disable polling when all taxa are loaded

			        UI.getCurrent().setPollInterval(-1);

				}

			});

    	}

    }