ChipView for crossref and groups

src/main/java/org/jabref/gui/Base.css

@@ -1174,10 +1174,16 @@ TextFlow * {
     -fx-fill: -fx-text-background-color;
 }
 
+.chips-pane > .editor {
+    -fx-pref-height: 30px;
+    -fx-padding: 0px 0px 0px -8px;
+    -fx-margin: 0em;
+
 .searchBar:invalid {
     -fx-background-color: rgba(240, 128, 128, 0.5);
 }
 
 .searchBar:unsupported {
     -fx-background-color: rgba(255, 159, 67, 0.5);
+
 }

src/main/java/org/jabref/gui/autocompleter/ContentSelectorSuggestionProvider.java

@@ -1,5 +1,7 @@
 package org.jabref.gui.autocompleter;
 
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.stream.Stream;
 
@@ -22,4 +24,14 @@ public ContentSelectorSuggestionProvider(SuggestionProvider<String> suggestionPr
     public Stream<String> getSource() {
         return Stream.concat(contentSelectorValues.stream(), suggestionProvider.getSource());
     }
+
+    @Override
+    public Collection<String> getPossibleSuggestions() {
+        List<String> suggestions = new ArrayList<>();
+        if (suggestionProvider != null) {
+            suggestions.addAll(suggestionProvider.getPossibleSuggestions());
+        }
+        suggestions.addAll(contentSelectorValues);
+        return suggestions;
+    }
 }

src/main/java/org/jabref/gui/autocompleter/SuggestionProvider.java

@@ -60,6 +60,16 @@ public final Collection<T> provideSuggestions(ISuggestionRequest request) {
 
     protected abstract Equivalence<T> getEquivalence();
 
+    public Collection<T> getPossibleSuggestions() {
+        Comparator<T> comparator = getComparator().reversed();
+        Equivalence<T> equivalence = getEquivalence();
+        return getSource().map(equivalence::wrap) // Need to do a bit of acrobatic as there is no distinctBy method
+                          .distinct()
+                          .map(Equivalence.Wrapper::get)
+                          .sorted(comparator)
+                          .collect(Collectors.toList());
+    }
+
     /**
      * Get the comparator to order the suggestions
      */

src/main/java/org/jabref/gui/autocompleter/SuggestionProviders.java

@@ -32,10 +32,9 @@ public SuggestionProvider<?> getForField(Field field) {
         Set<FieldProperty> fieldProperties = field.getProperties();
         if (fieldProperties.contains(FieldProperty.PERSON_NAMES)) {
             return new PersonNameSuggestionProvider(field, database);
-        } else if (fieldProperties.contains(FieldProperty.SINGLE_ENTRY_LINK)) {
+        } else if (fieldProperties.contains(FieldProperty.SINGLE_ENTRY_LINK) || fieldProperties.contains(FieldProperty.MULTIPLE_ENTRY_LINK)) {
             return new BibEntrySuggestionProvider(database);
-        } else if (fieldProperties.contains(FieldProperty.JOURNAL_NAME)
-                || StandardField.PUBLISHER.equals(field)) {
+        } else if (fieldProperties.contains(FieldProperty.JOURNAL_NAME) || StandardField.PUBLISHER.equals(field)) {
             return new JournalsSuggestionProvider(field, database, abbreviationRepository);
         } else {
             return new WordSuggestionProvider(field, database);

src/main/java/org/jabref/gui/fieldeditors/FieldEditors.java

@@ -14,6 +14,7 @@
 import org.jabref.logic.integrity.FieldCheckers;
 import org.jabref.logic.journals.JournalAbbreviationRepository;
 import org.jabref.model.database.BibDatabaseContext;
+import org.jabref.model.entry.BibEntry;
 import org.jabref.model.entry.field.Field;
 import org.jabref.model.entry.field.FieldFactory;
 import org.jabref.model.entry.field.FieldProperty;
@@ -27,6 +28,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+@SuppressWarnings("unchecked")
 public class FieldEditors {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(FieldEditors.class);
@@ -83,9 +85,9 @@ public static FieldEditorFX getForField(final Field field,
                 return new OptionEditor<>(new TypeEditorViewModel(field, suggestionProvider, fieldCheckers));
             }
         } else if (fieldProperties.contains(FieldProperty.SINGLE_ENTRY_LINK)) {
-            return new LinkedEntriesEditor(field, databaseContext, suggestionProvider, fieldCheckers);
+            return new LinkedEntriesEditor(field, databaseContext, (SuggestionProvider<BibEntry>) suggestionProvider, fieldCheckers);
         } else if (fieldProperties.contains(FieldProperty.MULTIPLE_ENTRY_LINK)) {
-            return new LinkedEntriesEditor(field, databaseContext, suggestionProvider, fieldCheckers);
+            return new LinkedEntriesEditor(field, databaseContext, (SuggestionProvider<BibEntry>) suggestionProvider, fieldCheckers);
         } else if (fieldProperties.contains(FieldProperty.PERSON_NAMES)) {
             return new PersonsEditor(field, suggestionProvider, preferences, fieldCheckers, isMultiLine);
         } else if (StandardField.KEYWORDS.equals(field)) {
@@ -98,7 +100,6 @@ public static FieldEditorFX getForField(final Field field,
         }
     }
 
-    @SuppressWarnings("unchecked")
     private static SuggestionProvider<?> getSuggestionProvider(Field field, SuggestionProviders suggestionProviders, MetaData metaData) {
         SuggestionProvider<?> suggestionProvider = suggestionProviders.getForField(field);
 

src/main/java/org/jabref/gui/fieldeditors/LinkedEntriesEditor.fxml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <?import javafx.scene.layout.HBox?>
-<?import org.jabref.gui.util.component.TagBar?>
+<?import com.jfoenix.controls.JFXChipView?>
 <fx:root xmlns:fx="http://javafx.com/fxml/1" type="HBox" xmlns="http://javafx.com/javafx/8.0.112"
          fx:controller="org.jabref.gui.fieldeditors.LinkedEntriesEditor">
-    <TagBar fx:id="linkedEntriesBar" maxWidth="Infinity" HBox.hgrow="ALWAYS"/>
+    <JFXChipView fx:id="chipView" HBox.hgrow="ALWAYS" maxWidth="Infinity"/>
 </fx:root>

src/main/java/org/jabref/gui/fieldeditors/LinkedEntriesEditor.java

@@ -1,41 +1,53 @@
 package org.jabref.gui.fieldeditors;
 
+import java.util.stream.Collectors;
+
 import javafx.beans.binding.Bindings;
 import javafx.fxml.FXML;
 import javafx.scene.Parent;
 import javafx.scene.layout.HBox;
 
-import org.jabref.gui.autocompleter.AutoCompletionTextInputBinding;
 import org.jabref.gui.autocompleter.SuggestionProvider;
-import org.jabref.gui.util.component.TagBar;
+import org.jabref.gui.util.ViewModelListCellFactory;
 import org.jabref.logic.integrity.FieldCheckers;
 import org.jabref.model.database.BibDatabaseContext;
 import org.jabref.model.entry.BibEntry;
 import org.jabref.model.entry.ParsedEntryLink;
 import org.jabref.model.entry.field.Field;
 
 import com.airhacks.afterburner.views.ViewLoader;
+import com.jfoenix.controls.JFXChip;
+import com.jfoenix.controls.JFXChipView;
+import com.jfoenix.controls.JFXDefaultChip;
 
 public class LinkedEntriesEditor extends HBox implements FieldEditorFX {
 
     @FXML
     private final LinkedEntriesEditorViewModel viewModel;
     @FXML
-    private TagBar<ParsedEntryLink> linkedEntriesBar;
+    private JFXChipView<ParsedEntryLink> chipView;
 
-    public LinkedEntriesEditor(Field field, BibDatabaseContext databaseContext, SuggestionProvider<?> suggestionProvider, FieldCheckers fieldCheckers) {
+    public LinkedEntriesEditor(Field field, BibDatabaseContext databaseContext, SuggestionProvider<BibEntry> suggestionProvider, FieldCheckers fieldCheckers) {
         this.viewModel = new LinkedEntriesEditorViewModel(field, suggestionProvider, databaseContext, fieldCheckers);
 
         ViewLoader.view(this)
                   .root(this)
                   .load();
 
-        linkedEntriesBar.setFieldProperties(field.getProperties());
-        linkedEntriesBar.setStringConverter(viewModel.getStringConverter());
-        linkedEntriesBar.setOnTagClicked((parsedEntryLink, mouseEvent) -> viewModel.jumpToEntry(parsedEntryLink));
+        chipView.setConverter(viewModel.getStringConverter());
+        var autoCompletionItemFactory = new ViewModelListCellFactory<ParsedEntryLink>()
+                .withText(ParsedEntryLink::getKey);
+        chipView.getAutoCompletePopup().setSuggestionsCellFactory(autoCompletionItemFactory);
+        chipView.getAutoCompletePopup().setCellLimit(5);
+        chipView.getSuggestions().addAll(suggestionProvider.getPossibleSuggestions().stream().map(ParsedEntryLink::new).collect(Collectors.toList()));
+
+        chipView.setChipFactory((view, item) -> {
+            JFXChip<ParsedEntryLink> chip = new JFXDefaultChip<>(view, item);
+            chip.setOnMouseClicked(event -> viewModel.jumpToEntry(item));
+            return chip;
+        });
 
-        AutoCompletionTextInputBinding.autoComplete(linkedEntriesBar.getInputTextField(), viewModel::complete, viewModel.getStringConverter());
-        Bindings.bindContentBidirectional(linkedEntriesBar.tagsProperty(), viewModel.linkedEntriesProperty());
+        Bindings.bindContentBidirectional(chipView.getChips(), viewModel.linkedEntriesProperty());
     }
 
     public LinkedEntriesEditorViewModel getViewModel() {

src/main/java/org/jabref/gui/fieldeditors/LinkedEntriesEditorViewModel.java

@@ -1,8 +1,5 @@
 package org.jabref.gui.fieldeditors;
 
-import java.util.Collection;
-import java.util.stream.Collectors;
-
 import javafx.beans.property.ListProperty;
 import javafx.beans.property.SimpleListProperty;
 import javafx.collections.FXCollections;
@@ -12,13 +9,10 @@
 import org.jabref.gui.util.BindingsHelper;
 import org.jabref.logic.integrity.FieldCheckers;
 import org.jabref.model.database.BibDatabaseContext;
-import org.jabref.model.entry.BibEntry;
 import org.jabref.model.entry.EntryLinkList;
 import org.jabref.model.entry.ParsedEntryLink;
 import org.jabref.model.entry.field.Field;
 
-import org.controlsfx.control.textfield.AutoCompletionBinding;
-
 public class LinkedEntriesEditorViewModel extends AbstractEditorViewModel {
 
     private final BibDatabaseContext databaseContext;
@@ -36,20 +30,12 @@ public LinkedEntriesEditorViewModel(Field field, SuggestionProvider<?> suggestio
                 newText -> EntryLinkList.parse(newText, databaseContext.getDatabase()));
     }
 
-    @Override
-    @SuppressWarnings("unchecked")
-    public Collection<ParsedEntryLink> complete(AutoCompletionBinding.ISuggestionRequest request) {
-        // We have to cast the BibEntries from the BibEntrySuggestionProvider to ParsedEntryLink
-        Collection<BibEntry> bibEntries = (Collection<BibEntry>) super.complete(request);
-        return bibEntries.stream().map(ParsedEntryLink::new).collect(Collectors.toList());
-    }
-
     public ListProperty<ParsedEntryLink> linkedEntriesProperty() {
         return linkedEntries;
     }
 
     public StringConverter<ParsedEntryLink> getStringConverter() {
-        return new StringConverter<ParsedEntryLink>() {
+        return new StringConverter<>() {
 
             @Override
             public String toString(ParsedEntryLink linkedEntry) {
@@ -61,7 +47,7 @@ public String toString(ParsedEntryLink linkedEntry) {
 
             @Override
             public ParsedEntryLink fromString(String key) {
-                return databaseContext.getDatabase().getEntryByKey(key).map(ParsedEntryLink::new).orElse(null);
+                return new ParsedEntryLink(key, databaseContext.getDatabase());
             }
         };
     }

src/main/java/org/jabref/model/entry/ParsedEntryLink.java

@@ -9,12 +9,12 @@ public class ParsedEntryLink {
 
     private String key;
     private Optional<BibEntry> linkedEntry;
-    private BibDatabase dataBase;
+    private BibDatabase database;
 
-    public ParsedEntryLink(String key, BibDatabase dataBase) {
+    public ParsedEntryLink(String key, BibDatabase database) {
         this.key = key;
-        this.linkedEntry = dataBase.getEntryByKey(this.key);
-        this.dataBase = dataBase;
+        this.linkedEntry = database.getEntryByKey(this.key);
+        this.database = database;
     }
 
     public ParsedEntryLink(BibEntry bibEntry) {
@@ -32,7 +32,7 @@ public Optional<BibEntry> getLinkedEntry() {
 
     public void setKey(String newKey) {
         this.key = newKey;
-        this.linkedEntry = getDataBase().getEntryByKey(this.key);
+        this.linkedEntry = getDatabase().getEntryByKey(this.key);
     }
 
     @Override
@@ -52,7 +52,7 @@ public boolean equals(Object obj) {
         return Objects.equals(key, other.key) && Objects.equals(linkedEntry, other.linkedEntry);
     }
 
-    public BibDatabase getDataBase() {
-        return dataBase;
+    public BibDatabase getDatabase() {
+        return database;
     }
 }

src/test/java/org/jabref/model/entry/EntryLinkListTest.java

@@ -45,7 +45,7 @@ public void givenFieldValueAndDatabaseWhenParsingThenExpectKey() {
 
     @Test
     public void givenFieldValueAndDatabaseWhenParsingThenExpectDataBase() {
-        assertEquals(database, link.getDataBase());
+        assertEquals(database, link.getDatabase());
     }
 
     @Test