EDIT

/**

* Copyright (C) 2018 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.debug;

import java.util.List;

import com.vaadin.data.util.HierarchicalContainer;

import com.vaadin.data.util.IndexedContainer;

import com.vaadin.data.util.filter.SimpleStringFilter;

import com.vaadin.shared.ui.label.ContentMode;

import com.vaadin.ui.CustomComponent;

import com.vaadin.ui.Label;

import com.vaadin.ui.TextField;

import com.vaadin.ui.Tree;

import com.vaadin.ui.VerticalLayout;

import com.vaadin.ui.VerticalSplitPanel;

import eu.etaxonomy.cdm.cache.CdmTransientEntityCacher;

import eu.etaxonomy.cdm.cache.EntityCacherDebugResult;

import eu.etaxonomy.cdm.cache.EntityCacherDebugResult.CdmEntityInfo;

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

import eu.etaxonomy.cdm.vaadin.view.name.CachingPresenter;

/**

 * @author a.kohlbecker

 * @since Jan 22, 2018

 *

 */

public class EntityCacheDebuggerComponent extends CustomComponent {

    CachingPresenter presenter;

    CdmTransientEntityCacher cacher;

    EntityCacherDebugResult debugResults;

    VerticalLayout layout = new VerticalLayout();

    VerticalSplitPanel splitPanel = new VerticalSplitPanel();

    private Tree entityTree;

    public EntityCacheDebuggerComponent(CachingPresenter presenter){

        this.presenter = presenter;

        this.cacher = (CdmTransientEntityCacher) presenter.getCache();

        debugResults = new EntityCacherDebugResult(cacher, presenter.getRootEntities());

        initContent();

    }

    private void initContent() {

        TextField filterField = new TextFieldNFix();

        filterField.setInputPrompt("Enter filter text");

        filterField.addTextChangeListener(e -> filterTree(e.getText()));

        filterField.setWidth("100%");

        entityTree = new Tree("Cache Content");

        buildTree(entityTree, debugResults.getRootElements());

        Label debugInformation = new Label(); // );

        debugInformation.setCaption("Debug Information");

        debugInformation.setValue(debugResults.toString());

        debugInformation.setContentMode(ContentMode.PREFORMATTED);

        setCompositionRoot(layout);

        entityTree.setSizeUndefined();

        debugInformation.setSizeUndefined();

        debugInformation.setReadOnly(true);

        splitPanel.setFirstComponent(entityTree);

        splitPanel.setSecondComponent(debugInformation);

        splitPanel.setSplitPosition(50, Unit.PERCENTAGE);

        splitPanel.setSizeFull();

        layout.addComponents(filterField, splitPanel);

        layout.setSizeFull();

        layout.setExpandRatio(splitPanel, 1.0f);

    }

    /**

     * @param value

     * @return

     */

    private void filterTree(String text) {

        IndexedContainer indexedContainer = (IndexedContainer)entityTree.getContainerDataSource();

        indexedContainer.removeAllContainerFilters();

        if(!text.isEmpty()){

            SimpleStringFilter filter = new SimpleStringFilter("label", text, true, false);

            indexedContainer.addContainerFilter(filter);

            ((HierarchicalContainer)entityTree.getContainerDataSource()).rootItemIds().forEach(rid -> entityTree.expandItemsRecursively(rid));

        }

    }

    /**

     * @param entityTree

     * @param rootElements

     */

    private void buildTree(Tree tree, List<CdmEntityInfo> childElements) {

        HierarchicalContainer container = new HierarchicalContainer();

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

        tree.setItemCaptionPropertyId("label");

        buildTree(container, childElements, null);

        tree.setContainerDataSource(container);

        container.setItemSorter(new CdmEntityInfoSorter());

    }

    private void buildTree(HierarchicalContainer container, List<CdmEntityInfo> childElements, Object parentItemId) {

        for(CdmEntityInfo cei : childElements){

            String itemId = cei.getLabel();

            container.addItem(itemId);

            container.getItem(itemId).getItemProperty("label").setValue(itemId);

            if(parentItemId != null){

                container.setParent(itemId, parentItemId);

            }

            if(cei.getChildren().isEmpty()){

                container.setChildrenAllowed(itemId, false);

            } else {

                buildTree(container, cei.getChildren(), itemId);

            }

        }

    }

}