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/**
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* Copyright (C) 2019 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.view.search.facet;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.KeyEvent;
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import org.eclipse.swt.events.KeyListener;
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import org.eclipse.swt.widgets.Composite;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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/**
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* @author pplitzner
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* @since Jan 22, 2019
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*
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*/
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public abstract class SearchController<S extends SearchResult<T>, T> implements KeyListener{
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private SearchComposite composite;
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private List<S> searchResults = new ArrayList<>();
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private Set<Facet> appliedFacets = new HashSet<>();
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public SearchController(SearchComposite composite) {
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this.composite = composite;
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composite.getTxtSearch().addKeyListener(this);
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}
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protected abstract List<S> searchResults(String searchString);
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protected abstract void createResultComposite(S result, Composite parent);
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protected abstract Comparator<S> getResultComparator(String searchString);
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private void search(String searchString){
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searchResults.clear();
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searchResults = searchResults(searchString);
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if(searchResults.size()>500){
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MessagingUtils.warningDialog("Specify your search", this, "The following search has too many results. Please enter a more specific search query.");
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return;
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}
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Collections.sort(searchResults, getResultComparator(searchString));
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Set<Facet> facets = createResults(searchResults);
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createFilterButtons(facets);
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composite.refresh();
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}
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private void createFilterButtons(Set<Facet> facets) {
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for (Facet facet : facets) {
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if(facet.getFacet()!=null){
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FilterComposite filterComposite = new FilterComposite(facet, this, composite.getFilterListComposite(), SWT.NONE);
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appliedFacets.add(facet);
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}
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}
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}
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private Set<Facet> createResults(List<S> results) {
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Set<Facet> facets = new HashSet<>();
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for (S result : results) {
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createResultComposite(result, composite.getSearchResultComposite());
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facets.addAll(result.getFacets());
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}
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return facets;
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}
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@Override
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public void keyPressed(KeyEvent e) {
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if(e.keyCode==SWT.CR && e.widget==composite.getTxtSearch()){
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composite.clear();
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search(composite.getTxtSearch().getText());
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}
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}
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@Override
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public void keyReleased(KeyEvent e) {
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}
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public void applyFilter(FilterComposite filterComposite) {
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composite.clearResults();
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Facet facet = filterComposite.getFacet();
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if(filterComposite.isFilterActive()){
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appliedFacets.add(facet);
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}
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else{
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appliedFacets.remove(facet);
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}
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for (S searchResult : searchResults) {
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if(searchResult.hasAnyFacet(appliedFacets)){
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createResultComposite(searchResult, composite.getSearchResultComposite());
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}
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}
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composite.refresh();
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}
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}
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