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.ArrayList;

import java.util.Arrays;

import java.util.List;

import java.util.Set;

import java.util.UUID;

import org.apache.log4j.Logger;

import com.vaadin.annotations.AutoGenerated;

import com.vaadin.data.Item;

import com.vaadin.data.Property;

import com.vaadin.data.Property.ValueChangeEvent;

import com.vaadin.data.Property.ValueChangeListener;

import com.vaadin.data.util.IndexedContainer;

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

import com.vaadin.event.Action;

import com.vaadin.event.FieldEvents;

import com.vaadin.event.FieldEvents.TextChangeEvent;

import com.vaadin.event.ItemClickEvent;

import com.vaadin.event.ItemClickEvent.ItemClickListener;

import com.vaadin.event.LayoutEvents.LayoutClickEvent;

import com.vaadin.event.LayoutEvents.LayoutClickListener;

import com.vaadin.navigator.View;

import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent;

import com.vaadin.server.FontAwesome;

import com.vaadin.ui.Alignment;

import com.vaadin.ui.Button;

import com.vaadin.ui.Button.ClickEvent;

import com.vaadin.ui.CheckBox;

import com.vaadin.ui.ComboBox;

import com.vaadin.ui.Component;

import com.vaadin.ui.CustomComponent;

import com.vaadin.ui.GridLayout;

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.Table;

import com.vaadin.ui.Table.ColumnHeaderMode;

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.IdAndUuid;

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

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

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

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

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

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

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

import eu.etaxonomy.cdm.vaadin.view.IStatusComposite;

/**

 * @author cmathew

 * @date 11 Mar 2015

 *

 */

public class StatusComposite extends CustomComponent implements View, IStatusComposite, ICdmChangeListener {

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

    @AutoGenerated

    private GridLayout mainLayout;

    @AutoGenerated

    private Label inViewLabel;

    @AutoGenerated

    private TreeTable taxaTreeTable;

    @AutoGenerated

    private HorizontalLayout searchHorizontalLayout;

    @AutoGenerated

    private Button clearSearchButton;

    @AutoGenerated

    private TextField searchTextField;

    @AutoGenerated

    private HorizontalLayout addRemovehorizontalLayout;

    @AutoGenerated

    private Button removeButton;

    @AutoGenerated

    private ComboBox addComboBox;

    @AutoGenerated

    private VerticalLayout filterVerticalLayout;

    @AutoGenerated

    private Table filterTable;

    @AutoGenerated

    private Label filterLabel;

    @AutoGenerated

    private ComboBox classificationComboBox;

    private static final Logger logger = Logger.getLogger(StatusComposite.class);

    private StatusComponentListener listener;

    private Object currentClickedTaxonItemId;

    private static final String SELECT_FILTER = "Select filter ...";

    private static final String SELECT_CLASSIFICATION = "Select classification ...";

    private static final String ADD_TAXON_SYNONYM_INPUT = "Add ...";

    private static final String ADD_TAXON = "New Accepted Taxon";

    private static final String ADD_SYNONYM = "New Synonym";

    private static final String PROPERTY_FILTER_ID = "filter";

    private static final String PROPERTY_SELECTED_ID = "selected";

    private static final String FILTER_NOT_RESOLVED = "not resolved";

    private static final String FILTER_UNPLACED = "unplaced";

    private static final String FILTER_UNFINISHED = "unfinished";

    private static final String FILTER_UNPUBLISHED = "unpublished";

    private static final String FILTER_TAXA_INPUT = "Filter Taxa ...";

    private static final String IN_VIEW_PREFIX = "in view : ";

    /**

     * 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 StatusComposite() {

        buildMainLayout();

        setCompositionRoot(mainLayout);

        this.listener = new StatusPresenter();

        CdmVaadinSessionUtilities.getCurrentCdmDataChangeService().register(this);

        addUIListeners();

        initAddComboBox();

        initSearchTextField();

        initClearSearchButton();

        setEnabledAll(false);

        init();

    }

    public void minimalize() {

    }

    public void init() {

        initClassificationComboBox();

    }

    public void setEnabledAll(boolean enable) {

        filterLabel.setEnabled(enable);

        filterTable.setEnabled(enable);

        taxaTreeTable.setEnabled(enable);

        addComboBox.setEnabled(enable);

        removeButton.setEnabled(enable);

        searchTextField.setEnabled(enable);

        clearSearchButton.setEnabled(enable);

    }

    private void initTaxaTable(int classificationId) {

        taxaTreeTable.setSelectable(true);

        taxaTreeTable.setMultiSelect(true);

        taxaTreeTable.setImmediate(false);

        if(listener != null) {

            List<String> columnIds = new ArrayList<String>();

            columnIds.add(LeafNodeTaxonContainer.NAME_ID);

            taxaTreeTable.setColumnExpandRatio(LeafNodeTaxonContainer.NAME_ID, 1);

            columnIds.add(LeafNodeTaxonContainer.PB_ID);

            taxaTreeTable.setColumnWidth(LeafNodeTaxonContainer.PB_ID, 25);

            taxaTreeTable.addGeneratedColumn(LeafNodeTaxonContainer.PB_ID, new TaxonTableCheckBoxGenerator());

            try {

                taxaTreeTable.setContainerDataSource(listener.loadTaxa(classificationId), columnIds);

            } catch (SQLException e) {

              //TODO : throw up warning dialog

                e.printStackTrace();

            }

            taxaTreeTable.setCellStyleGenerator(new Table.CellStyleGenerator() {

                @Override

                public String getStyle(Table source, Object itemId, Object propertyId) {

                    if(source.getItem(itemId) == null) {

                        return null;

                    }

                    Property hasSynProperty = source.getItem(itemId).getItemProperty(LeafNodeTaxonContainer.HAS_SYN_ID);

                    if(hasSynProperty == null) {

                        // this is a synonym, so we activate the corresponding css class

                        return "synonym";

                    }

                    return null;

                }

            });

            // NOTE : Not really sure why we need to refresh the container here.

            // in the case of 'Table' this is not required

            listener.refresh();

            updateInViewLabel();

        }

        final Action changeAcceptedTaxonToSynonymAction = new Action("Change Accepted Taxon To Synonym");

        taxaTreeTable.addActionHandler(new Action.Handler() {

            @Override

            public Action[] getActions(final Object target, final Object sender) {

                    return new Action[] { changeAcceptedTaxonToSynonymAction };

            }

            @Override

            public void handleAction(final Action action, final Object sender,

                    final Object target) {

                Notification.show("action for Change Accepted Taxon To Synonym", "Implement me", Type.WARNING_MESSAGE);

            }

        });

    }

    private void initClassificationComboBox() {

        classificationComboBox.setNewItemsAllowed(false);

        classificationComboBox.setNullSelectionAllowed(false);

        classificationComboBox.setImmediate(true);

        classificationComboBox.setItemCaptionPropertyId("titleCache");

        classificationComboBox.setInputPrompt(SELECT_CLASSIFICATION);

        if(listener != null) {

            try {

                classificationComboBox.setContainerDataSource(listener.loadClassifications());

            } catch (SQLException e) {

                //TODO : throw up warning dialog

                e.printStackTrace();

            }

        }

    }

    private void initFilterTable() {

        filterTable.setNullSelectionAllowed(false);

        final IndexedContainer container = new IndexedContainer();

        container.addContainerProperty("filter", String.class, "");

        container.addContainerProperty("selected", Boolean.class, "");

        Item item = container.addItem(FILTER_NOT_RESOLVED);

        item.getItemProperty(PROPERTY_FILTER_ID).setValue(FILTER_NOT_RESOLVED);

        item.getItemProperty(PROPERTY_SELECTED_ID).setValue(false);

        item = container.addItem(FILTER_UNPLACED);

        item.getItemProperty(PROPERTY_FILTER_ID).setValue(FILTER_UNPLACED);

        item.getItemProperty(PROPERTY_SELECTED_ID).setValue(false);

        item = container.addItem(FILTER_UNFINISHED);

        item.getItemProperty(PROPERTY_FILTER_ID).setValue(FILTER_UNFINISHED);

        item.getItemProperty(PROPERTY_SELECTED_ID).setValue(false);

        item = container.addItem(FILTER_UNPUBLISHED);

        item.getItemProperty(PROPERTY_FILTER_ID).setValue(FILTER_UNPUBLISHED);

        item.getItemProperty(PROPERTY_SELECTED_ID).setValue(false);

        filterTable.setContainerDataSource(container);

        filterTable.setColumnHeaderMode(ColumnHeaderMode.HIDDEN);

        ValueChangeListener selectedListener = new ValueChangeListener() {

            private static final long serialVersionUID = -5551250788805117454L;

            @Override

            public void valueChange(ValueChangeEvent event) {

                boolean value = (Boolean) event.getProperty().getValue();

                String selectedFilter = (String)filterTable.getItem(((CheckBox)event.getProperty()).getData()).getItemProperty(PROPERTY_FILTER_ID).getValue();

                if(selectedFilter != null) {

                    if(value) {

                        if(selectedFilter.equals(FILTER_UNPLACED)) {

                            listener.setUnplacedFilter();

                        }

                        if(selectedFilter.equals(FILTER_UNPUBLISHED)) {

                            listener.setUnpublishedFilter();

                        }

                    } else {

                        if(selectedFilter.equals(FILTER_UNPLACED)) {

                            listener.removeUnplacedFilter();

                        }

                        if(selectedFilter.equals(FILTER_UNPUBLISHED)) {

                            listener.removeUnpublishedFilter();

                        }

                    }

                    updateInViewLabel();

                }

            }

        };

        filterTable.addGeneratedColumn(PROPERTY_SELECTED_ID, new CheckBoxGenerator(selectedListener));

    }

    private void updateInViewLabel() {

        inViewLabel.setValue(IN_VIEW_PREFIX + String.valueOf(listener.getCurrentNoOfTaxa()) + " / " + String.valueOf(listener.getTotalNoOfTaxa()) + " taxa");

    }

    private void initSearchTextField() {

        searchTextField.setInputPrompt(FILTER_TAXA_INPUT);

    }

    private void initAddComboBox() {

        addComboBox.setNullSelectionAllowed(false);

        addComboBox.setImmediate(true);

        addComboBox.addItem(ADD_TAXON_SYNONYM_INPUT);

        addComboBox.addItem(ADD_TAXON);

        addComboBox.addItem(ADD_SYNONYM);

        addComboBox.setValue(ADD_TAXON_SYNONYM_INPUT);

    }

    private void initClearSearchButton() {

        clearSearchButton.setIcon(FontAwesome.REFRESH);

        clearSearchButton.setCaption("");

    }

    private void addUIListeners() {

        searchHorizontalLayout.addLayoutClickListener(new LayoutClickListener() {

            @Override

            public void layoutClick(LayoutClickEvent event) {

                if (event.getChildComponent() == searchTextField && searchTextField.getValue().equals(FILTER_TAXA_INPUT)) {

                   searchTextField.setValue("");

                }

            }

        });

        addClassificationComboBoxListener();

        addTaxaTreeTableListener();

        addAddComboBoxListener();

        addRemoveButtonListener();

        addSearchTextFieldListener();

        addClearSearchButtonListener();

    }

    private void addClassificationComboBoxListener() {

        classificationComboBox.addValueChangeListener(new Property.ValueChangeListener() {

            private static final long serialVersionUID = 4196786323147791606L;

            @Override

            public void valueChange(ValueChangeEvent event) {

                if (classificationComboBox.getValue() != null) {

                    Object selected = classificationComboBox.getValue();

                    logger.info("selected : " + selected);

                    int classificationId = (Integer)((RowId)selected).getId()[0];

                    initTaxaTable(classificationId);

                    initFilterTable();

                    setEnabledAll(true);

                }

            }

        });

    }

    private void addTaxaTreeTableListener() {

        taxaTreeTable.addItemClickListener(new ItemClickListener() {

            @Override

            public void itemClick(ItemClickEvent event) {

                Object itemId = event.getItemId();

                if(!listener.isSynonym(itemId)) {

                    UUID taxonUuid = listener.getCurrentLeafNodeTaxonContainer().getUuid(itemId);

                    CdmVaadinSessionUtilities.getCurrentSelectionService()

                    .fireSelectionEvent(new SelectionEvent(Arrays.asList((Object)taxonUuid), StatusComposite.class), true);

                }

            }

        });

    }

    private void addAddComboBoxListener() {

        addComboBox.addValueChangeListener(new Property.ValueChangeListener() {

            private static final long serialVersionUID = -6235423275051269517L;

            @Override

            public void valueChange(ValueChangeEvent event) {

                if (addComboBox.getValue() != null) {

                    String selected = (String)addComboBox.getValue();

                    if(!selected.equals(ADD_TAXON_SYNONYM_INPUT)) {

                        try {

                            String windowTitle;

                            Object selectedItemId = null;

                            IdAndUuid accTaxonIdUuid = null;

                            if(selected.equals(ADD_SYNONYM)) {

                                Set<Object> selectedIds = (Set<Object>)taxaTreeTable.getValue();

                                // if zero or more than one items (taxa / synonyms) are selected

                                // throw a warning

                                if(selectedIds.size() == 0) {

                                    Notification.show("Multiple or No selection", "Please select a single Taxon", Type.WARNING_MESSAGE);

                                    return;

                                }

                                // if a synonym is selected then throw warning

                                if(listener.isSynonym(selected)) {

                                    Notification.show("Synonym selected", "Please choose a Taxon", Type.WARNING_MESSAGE);

                                    return;

                                }

                                windowTitle = "Add New Synonym";

                                selectedItemId = selectedIds.iterator().next();

                                accTaxonIdUuid = new IdAndUuid(selectedItemId, listener.getCurrentLeafNodeTaxonContainer().getUuid(selectedItemId));

                            } else {

                                windowTitle = "Add New Taxon";

                            }

                            try {

                                Window dialog = new Window(windowTitle);

                                dialog.setModal(true);

                                dialog.setClosable(false);

                                dialog.setResizable(false);

                                UI.getCurrent().addWindow(dialog);

                                UUID classificationUuid = listener.getClassificationContainer().getUuid(classificationComboBox.getValue());

                                IdAndUuid classificationIdUuid = new IdAndUuid(classificationComboBox.getValue(), classificationUuid);

                                NewTaxonBaseComposite newTaxonComponent =

                                        new NewTaxonBaseComposite(dialog,

                                                new NewTaxonBasePresenter(),

                                                accTaxonIdUuid,

                                                classificationIdUuid);

                                dialog.setContent(newTaxonComponent);

                            } catch (SQLException e) {

                                // TODO Auto-generated catch block

                                e.printStackTrace();

                            }

                        } finally {

                            addComboBox.setValue(ADD_TAXON_SYNONYM_INPUT);

                        }

                    }

                }

            }

        });

    }

    private void addSearchTextFieldListener() {

        searchTextField.addTextChangeListener(new FieldEvents.TextChangeListener() {

            private static final long serialVersionUID = -7376538870420619534L;

            @Override

            public void textChange(TextChangeEvent event) {

               listener.setNameFilter(event.getText());

               updateInViewLabel();

            }

        });

    }

    private void addClearSearchButtonListener() {

        clearSearchButton.addClickListener(new Button.ClickListener() {

            @Override

            public void buttonClick(ClickEvent event) {

               listener.removeNameFilter();

               searchTextField.setValue(FILTER_TAXA_INPUT);

               updateInViewLabel();

            }

        });

    }

    private void addRemoveButtonListener() {

        removeButton.addClickListener(new Button.ClickListener() {

            @Override

            public void buttonClick(ClickEvent event) {

               Set<Object> selectedItemIds = (Set)taxaTreeTable.getValue();

               if(selectedItemIds.isEmpty()) {

                   Notification.show("No Taxa / Synonyms selected", "Please select taxa or synonyms to delete", Type.WARNING_MESSAGE);

               } else {

                   Notification.show("Deleting selected Taxa / Synonyms", "Implement me", Type.WARNING_MESSAGE);

               }

            }

        });

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.cdm.vaadin.view.IStatusComponent#setListener(eu.etaxonomy.cdm.vaadin.view.IStatusComponent.StatusComponentListener)

     */

    @Override

    public void setListener(StatusComponentListener listener) {

        this.listener = listener;

    }

    class TaxonTableCheckBoxGenerator implements Table.ColumnGenerator {

        /**

         * Generates the cell containing an open image when boolean is true

         */

        @Override

        public Component generateCell(Table source, final Object itemId, Object columnId) {

            if(source.getItem(itemId) != null) {

                Property prop = source.getItem(itemId).getItemProperty(columnId);

                if(prop == null) {

                    return null;

                }

                CheckBox cb = new CheckBox(null, prop);

                ValueChangeListener pbListener = new ValueChangeListener() {

                    @Override

                    public void valueChange(ValueChangeEvent event) {

                        boolean value = (Boolean) event.getProperty().getValue();

                        listener.updatePublished(value, itemId);

                    }

                };

                cb.addValueChangeListener(pbListener);

                cb.setData(itemId);

                return cb;

            } else {

                return null;

            }

        }

    }

    class CheckBoxGenerator implements Table.ColumnGenerator {

        private final ValueChangeListener vcListener;

        public CheckBoxGenerator(ValueChangeListener vcListener) {

            this.vcListener = vcListener;

        }

        /**

         * Generates the cell containing an open image when boolean is true

         */

        @Override

        public Component generateCell(Table source, final Object itemId, Object columnId) {

            if(source.getItem(itemId) != null) {

                Property prop = source.getItem(itemId).getItemProperty(columnId);

                if(prop == null) {

                    return null;

                }

                CheckBox cb = new CheckBox(null, prop);

                cb.addValueChangeListener(vcListener);

                cb.setData(itemId);

                return cb;

            } else {

                return null;

            }

        }

    }

    @AutoGenerated

    private GridLayout buildMainLayout() {

        // common part: create layout

        mainLayout = new GridLayout();

        mainLayout.setImmediate(false);

        mainLayout.setWidth("340px");

        mainLayout.setHeight("840px");

        mainLayout.setMargin(true);

        mainLayout.setSpacing(true);

        mainLayout.setRows(6);

        // top-level component properties

        setWidth("340px");

        setHeight("840px");

        // classificationComboBox

        classificationComboBox = new ComboBox();

        classificationComboBox.setImmediate(false);

        classificationComboBox.setWidth("100.0%");

        classificationComboBox.setHeight("-1px");

        mainLayout.addComponent(classificationComboBox, 0, 0);

        // filterVerticalLayout

        filterVerticalLayout = buildFilterVerticalLayout();

        mainLayout.addComponent(filterVerticalLayout, 0, 1);

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

        // addRemovehorizontalLayout

        addRemovehorizontalLayout = buildAddRemovehorizontalLayout();

        mainLayout.addComponent(addRemovehorizontalLayout, 0, 2);

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

        // searchHorizontalLayout

        searchHorizontalLayout = buildSearchHorizontalLayout();

        mainLayout.addComponent(searchHorizontalLayout, 0, 3);

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

        // taxaTreeTable

        taxaTreeTable = new TreeTable();

        taxaTreeTable.setImmediate(false);

        taxaTreeTable.setWidth("100.0%");

        taxaTreeTable.setHeight("534px");

        mainLayout.addComponent(taxaTreeTable, 0, 4);

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

        // inViewLabel

        inViewLabel = new Label();

        inViewLabel.setImmediate(false);

        inViewLabel.setWidth("100.0%");

        inViewLabel.setHeight("-1px");

        inViewLabel.setValue("in view : ");

        mainLayout.addComponent(inViewLabel, 0, 5);

        return mainLayout;

    }

    @AutoGenerated

    private VerticalLayout buildFilterVerticalLayout() {

        // common part: create layout

        filterVerticalLayout = new VerticalLayout();

        filterVerticalLayout.setImmediate(false);

        filterVerticalLayout.setWidth("100.0%");

        filterVerticalLayout.setHeight("-1px");

        filterVerticalLayout.setMargin(false);

        // filterLabel

        filterLabel = new Label();

        filterLabel.setImmediate(false);

        filterLabel.setWidth("100.0%");

        filterLabel.setHeight("-1px");

        filterLabel.setValue("Filter by :");

        filterVerticalLayout.addComponent(filterLabel);

        // filterTable

        filterTable = new Table();

        filterTable.setImmediate(false);

        filterTable.setWidth("100.0%");

        filterTable.setHeight("86px");

        filterVerticalLayout.addComponent(filterTable);

        filterVerticalLayout.setComponentAlignment(filterTable, new Alignment(48));

        return filterVerticalLayout;

    }

    @AutoGenerated

    private HorizontalLayout buildAddRemovehorizontalLayout() {

        // common part: create layout

        addRemovehorizontalLayout = new HorizontalLayout();

        addRemovehorizontalLayout.setImmediate(false);

        addRemovehorizontalLayout.setWidth("100.0%");

        addRemovehorizontalLayout.setHeight("-1px");

        addRemovehorizontalLayout.setMargin(false);

        addRemovehorizontalLayout.setSpacing(true);

        // addComboBox

        addComboBox = new ComboBox();

        addComboBox.setImmediate(false);

        addComboBox.setWidth("100.0%");

        addComboBox.setHeight("-1px");

        addRemovehorizontalLayout.addComponent(addComboBox);

        addRemovehorizontalLayout.setExpandRatio(addComboBox, 3.0f);

        // removeButton

        removeButton = new Button();

        removeButton.setCaption("Remove");

        removeButton.setImmediate(true);

        removeButton.setWidth("100.0%");

        removeButton.setHeight("-1px");

        addRemovehorizontalLayout.addComponent(removeButton);

        addRemovehorizontalLayout.setExpandRatio(removeButton, 2.0f);

        return addRemovehorizontalLayout;

    }

    @AutoGenerated

    private HorizontalLayout buildSearchHorizontalLayout() {

        // common part: create layout

        searchHorizontalLayout = new HorizontalLayout();

        searchHorizontalLayout.setImmediate(false);

        searchHorizontalLayout.setWidth("100.0%");

        searchHorizontalLayout.setHeight("-1px");

        searchHorizontalLayout.setMargin(false);

        searchHorizontalLayout.setSpacing(true);

        // searchTextField

        searchTextField = new TextField();

        searchTextField.setImmediate(false);

        searchTextField.setWidth("100.0%");

        searchTextField.setHeight("-1px");

        searchHorizontalLayout.addComponent(searchTextField);

        searchHorizontalLayout.setExpandRatio(searchTextField, 4.0f);

        searchHorizontalLayout.setComponentAlignment(searchTextField, new Alignment(48));

        // clearSearchButton

        clearSearchButton = new Button();

        clearSearchButton.setCaption("Button");

        clearSearchButton.setImmediate(true);

        clearSearchButton.setWidth("100.0%");

        clearSearchButton.setHeight("-1px");

        searchHorizontalLayout.addComponent(clearSearchButton);

        searchHorizontalLayout.setExpandRatio(clearSearchButton, 1.0f);

        searchHorizontalLayout.setComponentAlignment(clearSearchButton, new Alignment(48));

        return searchHorizontalLayout;

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.cdm.vaadin.session.ICdmChangeListener#onCreate(eu.etaxonomy.cdm.vaadin.session.CdmChangeEvent)

     */

    @Override

    public void onCreate(CdmChangeEvent event) {

        if(event.getSourceType().equals(NewTaxonBaseComposite.class)) {

            Object itemId = event.getChangedObjects().get(0);

            listener.getCurrentLeafNodeTaxonContainer().removeTaxonFromCache(itemId);

            // FIXME : need to figure out how to programmatically select an item in the

            // table

            listener.getCurrentLeafNodeTaxonContainer().getItem(itemId);

            listener.refresh();

            taxaTreeTable.select(itemId);

        }

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.cdm.vaadin.session.ICdmChangeListener#onUpdate(eu.etaxonomy.cdm.vaadin.session.CdmChangeEvent)

     */

    @Override

    public void onUpdate(CdmChangeEvent event) {

        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.cdm.vaadin.session.ICdmChangeListener#onDelete(eu.etaxonomy.cdm.vaadin.session.CdmChangeEvent)

     */

    @Override

    public void onDelete(CdmChangeEvent event) {

        // TODO Auto-generated method stub

    }

    /* (non-Javadoc)

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

     */

    @Override

    public void enter(ViewChangeEvent event) {

        // TODO Auto-generated method stub

    }

}