Add button-icon for union/intersection in the groups side panel

src/main/java/org/jabref/gui/SidePaneComponent.java

@@ -1,8 +1,12 @@
 package org.jabref.gui;
 
+import java.util.Collections;
+import java.util.List;
+
 import javafx.scene.Node;
 import javafx.scene.control.Button;
 import javafx.scene.control.Label;
+import javafx.scene.control.Tooltip;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.Priority;
@@ -11,11 +15,12 @@
 import org.jabref.gui.actions.SimpleCommand;
 import org.jabref.gui.icon.IconTheme;
 import org.jabref.gui.icon.JabRefIcon;
+import org.jabref.logic.l10n.Localization;
 
 public abstract class SidePaneComponent {
 
-    protected final SidePaneManager manager;
-    protected final ToggleCommand toggleCommand;
+    private final SidePaneManager manager;
+    private final ToggleCommand toggleCommand;
     private final JabRefIcon icon;
     private final String title;
     private Node contentNode;
@@ -25,6 +30,7 @@ public SidePaneComponent(SidePaneManager manager, JabRefIcon icon, String title)
         this.icon = icon;
         this.title = title;
         this.toggleCommand = new ToggleCommand(this);
+
     }
 
     protected void hide() {
@@ -35,11 +41,11 @@ protected void show() {
         manager.show(this.getType());
     }
 
-    private void moveUp() {
+    protected void moveUp() {
         manager.moveUp(this);
     }
 
-    private void moveDown() {
+    protected void moveDown() {
         manager.moveDown(this);
     }
 
@@ -90,28 +96,38 @@ public final Node getContentPane() {
      */
     public final Node getHeader() {
         Button close = IconTheme.JabRefIcons.CLOSE.asButton();
+        close.setTooltip(new Tooltip(Localization.lang("Hide panel")));
         close.setOnAction(event -> hide());
 
         Button up = IconTheme.JabRefIcons.UP.asButton();
+        up.setTooltip(new Tooltip(Localization.lang("Move panel up")));
         up.setOnAction(event -> moveUp());
 
         Button down = IconTheme.JabRefIcons.DOWN.asButton();
+        down.setTooltip(new Tooltip(Localization.lang("Move panel down")));
         down.setOnAction(event -> moveDown());
 
-        HBox buttonContainer = new HBox();
-        buttonContainer.getChildren().addAll(up, down, close);
+        final HBox buttonContainer = new HBox();
+        buttonContainer.getChildren().addAll(up, down);
+        buttonContainer.getChildren().addAll(getAddtionalHeaderButtons());
+        buttonContainer.getChildren().add(close);
+
         BorderPane graphic = new BorderPane();
         graphic.setCenter(icon.getGraphicNode());
-        BorderPane container = new BorderPane();
-//        container.setLeft(graphic);
+
         final Label label = new Label(title);
+        BorderPane container = new BorderPane();
         container.setCenter(label);
         container.setRight(buttonContainer);
         container.getStyleClass().add("sidePaneComponentHeader");
 
         return container;
     }
 
+    protected List<Node> getAddtionalHeaderButtons() {
+        return Collections.emptyList();
+    }
+
     /**
      * Create the content of this component
      *

src/main/java/org/jabref/gui/SidePaneManager.java

@@ -31,10 +31,10 @@ public SidePaneManager(JabRefPreferences preferences, JabRefFrame frame) {
 
         OpenOfficePreferences openOfficePreferences = preferences.getOpenOfficePreferences();
         Stream.of(
-                new FileUpdatePanel(this),
-                new GroupSidePane(this, preferences),
-                new GeneralFetcher(this, preferences, frame),
-                new OpenOfficeSidePanel(this, openOfficePreferences, frame))
+                  new FileUpdatePanel(this),
+                  new GroupSidePane(this, preferences, frame.getDialogService()),
+                  new GeneralFetcher(this, preferences, frame),
+                  new OpenOfficeSidePanel(this, openOfficePreferences, frame))
               .forEach(pane -> components.put(pane.getType(), pane));
 
         if (preferences.getBoolean(JabRefPreferences.GROUP_SIDEPANE_VISIBLE)) {

src/main/java/org/jabref/gui/groups/GroupModeViewModel.java

@@ -0,0 +1,34 @@
+package org.jabref.gui.groups;
+
+import javafx.scene.Node;
+import javafx.scene.control.Tooltip;
+
+import org.jabref.gui.icon.IconTheme.JabRefIcons;
+import org.jabref.logic.l10n.Localization;
+
+public class GroupModeViewModel {
+
+    public static Tooltip getUnionIntersectionTooltip(GroupViewMode mode) {
+        if (mode == GroupViewMode.UNION) {
+            return new Tooltip(Localization.lang("Toogle intersection"));
+        }
+        if (mode == GroupViewMode.INTERSECTION) {
+            return new Tooltip(Localization.lang("Toogle union"));
+        }
+        return new Tooltip();
+
+    }
+
+    public static Node getUnionIntersectionGraphic(GroupViewMode mode) {
+
+        if (mode == GroupViewMode.UNION) {
+            return JabRefIcons.GROUP_UNION.getGraphicNode();
+        }
+        if (mode == GroupViewMode.INTERSECTION) {
+            return JabRefIcons.GROUP_INTERSECTION.getGraphicNode();
+        }
+        //as there is no concept like an empty node/icon, we return simply the other icon
+        return JabRefIcons.GROUP_INTERSECTION.getGraphicNode();
+
+    }
+}

src/main/java/org/jabref/gui/groups/GroupSidePane.java

@@ -1,8 +1,13 @@
 package org.jabref.gui.groups;
 
+import java.util.Arrays;
+import java.util.List;
+
 import javafx.scene.Node;
+import javafx.scene.control.Button;
 import javafx.scene.layout.Priority;
 
+import org.jabref.gui.DialogService;
 import org.jabref.gui.SidePaneComponent;
 import org.jabref.gui.SidePaneManager;
 import org.jabref.gui.SidePaneType;
@@ -20,15 +25,25 @@
 public class GroupSidePane extends SidePaneComponent {
 
     private final JabRefPreferences preferences;
+    private final DialogService dialogService;
+    private final Button intersectionUnionToggle = IconTheme.JabRefIcons.GROUP_INTERSECTION.asButton();
 
-    public GroupSidePane(SidePaneManager manager, JabRefPreferences preferences) {
+    public GroupSidePane(SidePaneManager manager, JabRefPreferences preferences, DialogService dialogService) {
         super(manager, IconTheme.JabRefIcons.TOGGLE_GROUPS, Localization.lang("Groups"));
         this.preferences = preferences;
+        this.dialogService = dialogService;
+    }
+
+    @Override
+    protected List<Node> getAddtionalHeaderButtons() {
+        intersectionUnionToggle.setOnAction(event -> toggleUnionIntersection());
+        return Arrays.asList(intersectionUnionToggle);
     }
 
     @Override
     public void afterOpening() {
         preferences.putBoolean(JabRefPreferences.GROUP_SIDEPANE_VISIBLE, Boolean.TRUE);
+        setGraphicsAndTooltipforButton(preferences.getGroupViewMode());
     }
 
     @Override
@@ -46,6 +61,27 @@ public Action getToggleAction() {
         return StandardActions.TOGGLE_GROUPS;
     }
 
+    private void toggleUnionIntersection() {
+        GroupViewMode mode = preferences.getGroupViewMode();
+
+        if (mode == GroupViewMode.UNION) {
+            preferences.setGroupViewMode(GroupViewMode.INTERSECTION);
+            dialogService.notify(Localization.lang("Group view mode set to intersection"));
+        }
+
+        if (mode == GroupViewMode.INTERSECTION) {
+            preferences.setGroupViewMode(GroupViewMode.UNION);
+
+            dialogService.notify(Localization.lang("Group view mode set to union"));
+        }
+        setGraphicsAndTooltipforButton(mode);
+    }
+
+    private void setGraphicsAndTooltipforButton(GroupViewMode mode) {
+        intersectionUnionToggle.setGraphic(GroupModeViewModel.getUnionIntersectionGraphic(mode));
+        intersectionUnionToggle.setTooltip(GroupModeViewModel.getUnionIntersectionTooltip(mode));
+    }
+
     @Override
     protected Node createContentPane() {
         return ViewLoader.view(GroupTreeView.class)

src/main/java/org/jabref/gui/groups/GroupViewMode.java

@@ -0,0 +1,8 @@
+package org.jabref.gui.groups;
+
+public enum GroupViewMode {
+
+    INTERSECTION,
+    UNION,
+
+}

src/main/java/org/jabref/gui/icon/IconTheme.java

@@ -230,6 +230,8 @@ public enum JabRefIcons implements JabRefIcon {
         GROUP_INCLUDING(MaterialDesignIcon.FILTER_OUTLINE) /*css: filter-outline*/,
         GROUP_REFINING(MaterialDesignIcon.FILTER) /*css: filter*/,
         AUTO_GROUP(MaterialDesignIcon.AUTO_FIX), /*css: auto-fix*/
+        GROUP_INTERSECTION(JabRefMaterialDesignIcon.SET_CENTER),
+        GROUP_UNION(JabRefMaterialDesignIcon.SET_ALL),
         EMAIL(MaterialDesignIcon.EMAIL) /*css: email*/,
         EXPORT_TO_CLIPBOARD(MaterialDesignIcon.CLIPBOARD_ARROW_LEFT) /*css: clipboard-arrow-left */,
         ATTACH_FILE(MaterialDesignIcon.PAPERCLIP) /*css: paperclip*/,

src/main/java/org/jabref/gui/icon/JabRefMaterialDesignIcon.java

@@ -19,11 +19,14 @@ public enum JabRefMaterialDesignIcon implements GlyphIcons {
     EMACS("\ue902"),
     OPEN_OFFICE("\ue903"),
     VIM("\ue904"),
-    LYX("\ue905"),
-    WINEDT("\ue906"),
-    ARXIV("\ue907"),
-    COPY("\ue908"),
-    PASTE("\ue909");
+    VIM2("\ue905"),
+    LYX("\ue906"),
+    WINEDT("\ue907"),
+    ARXIV("\ue908"),
+    COPY("\ue909"),
+    PASTE("\ue90a"),
+    SET_CENTER("\ue90b"),
+    SET_ALL("\ue90c");
 
 
     private final String unicode;

src/main/java/org/jabref/gui/maintable/MainTableDataModel.java

@@ -11,13 +11,13 @@
 import javafx.collections.transformation.SortedList;
 
 import org.jabref.Globals;
+import org.jabref.gui.groups.GroupViewMode;
 import org.jabref.gui.util.BindingsHelper;
 import org.jabref.model.database.BibDatabaseContext;
 import org.jabref.model.entry.BibEntry;
 import org.jabref.model.groups.GroupTreeNode;
 import org.jabref.model.search.matchers.MatcherSet;
 import org.jabref.model.search.matchers.MatcherSets;
-import org.jabref.preferences.JabRefPreferences;
 
 public class MainTableDataModel {
     private final FilteredList<BibEntryTableViewModel> entriesFiltered;
@@ -60,8 +60,7 @@ private Optional<MatcherSet> createGroupMatcher(List<GroupTreeNode> selectedGrou
             return Optional.empty();
         }
 
-        final MatcherSet searchRules = MatcherSets.build(
-                Globals.prefs.getBoolean(JabRefPreferences.GROUP_INTERSECT_SELECTIONS) ? MatcherSets.MatcherType.AND : MatcherSets.MatcherType.OR);
+        final MatcherSet searchRules = MatcherSets.build(Globals.prefs.getGroupViewMode() == GroupViewMode.INTERSECTION ? MatcherSets.MatcherType.AND : MatcherSets.MatcherType.OR);
 
         for (GroupTreeNode node : selectedGroups) {
             searchRules.addRule(node.getSearchMatcher());

src/main/java/org/jabref/gui/preftabs/GroupsPrefsTab.java

@@ -12,6 +12,7 @@
 import javax.swing.JRadioButton;
 import javax.swing.JTextField;
 
+import org.jabref.gui.groups.GroupViewMode;
 import org.jabref.logic.l10n.Localization;
 import org.jabref.preferences.JabRefPreferences;
 
@@ -22,8 +23,7 @@ class GroupsPrefsTab extends JPanel implements PrefsTab {
 
     private final JCheckBox hideNonHits = new JCheckBox(Localization.lang("Hide non-hits"));
     private final JCheckBox grayOut = new JCheckBox(Localization.lang("Gray out non-hits"));
-    private final JCheckBox autoAssignGroup = new JCheckBox(
-            Localization.lang("Automatically assign new entry to selected groups"));
+    private final JCheckBox autoAssignGroup = new JCheckBox(Localization.lang("Automatically assign new entry to selected groups"));
     private final JRadioButton multiSelectionModeIntersection = new JRadioButton(Localization.lang("Intersection"));
     private final JRadioButton multiSelectionModeUnion = new JRadioButton(Localization.lang("Union"));
 
@@ -32,7 +32,6 @@ class GroupsPrefsTab extends JPanel implements PrefsTab {
 
     private final JabRefPreferences prefs;
 
-
     public GroupsPrefsTab(JabRefPreferences prefs) {
         this.prefs = prefs;
 
@@ -59,9 +58,8 @@ public void focusLost(FocusEvent e) {
         multiSelectionModeIntersection.setToolTipText(Localization.lang("Display only entries belonging to all selected groups."));
         multiSelectionModeUnion.setToolTipText(Localization.lang("Display all entries belonging to one or more of the selected groups."));
 
-
         FormLayout layout = new FormLayout("9dlu, pref", //500px",
-                "p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p");
+                                           "p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p, 3dlu, p");
         DefaultFormBuilder builder = new DefaultFormBuilder(layout);
         builder.appendSeparator(Localization.lang("View"));
         builder.nextLine();
@@ -91,8 +89,7 @@ public void focusLost(FocusEvent e) {
         builder.nextLine();
         builder.nextColumn();
         // build subcomponent
-        FormLayout layout2 = new FormLayout("left:pref, 2dlu, left:pref",
-                "p, 3dlu, p");
+        FormLayout layout2 = new FormLayout("left:pref, 2dlu, left:pref", "p, 3dlu, p");
         DefaultFormBuilder builder2 = new DefaultFormBuilder(layout2);
         builder2.append(new JLabel(Localization.lang("Default grouping field") + ":"));
         builder2.append(groupingField);
@@ -114,7 +111,14 @@ public void setValues() {
         groupingField.setText(prefs.get(JabRefPreferences.GROUPS_DEFAULT_FIELD));
         keywordSeparator.setText(prefs.get(JabRefPreferences.KEYWORD_SEPARATOR));
         autoAssignGroup.setSelected(prefs.getBoolean(JabRefPreferences.AUTO_ASSIGN_GROUP));
-        multiSelectionModeIntersection.setSelected(prefs.getBoolean(JabRefPreferences.GROUP_INTERSECT_SELECTIONS));
+
+        GroupViewMode mode = prefs.getGroupViewMode();
+        if (mode == GroupViewMode.INTERSECTION) {
+            multiSelectionModeIntersection.setSelected(true);
+        }
+        if (mode == GroupViewMode.UNION) {
+            multiSelectionModeUnion.setSelected(true);
+        }
     }
 
     @Override
@@ -123,7 +127,13 @@ public void storeSettings() {
         prefs.put(JabRefPreferences.GROUPS_DEFAULT_FIELD, groupingField.getText().trim());
         prefs.putBoolean(JabRefPreferences.AUTO_ASSIGN_GROUP, autoAssignGroup.isSelected());
         prefs.put(JabRefPreferences.KEYWORD_SEPARATOR, keywordSeparator.getText());
-        prefs.putBoolean(JabRefPreferences.GROUP_INTERSECT_SELECTIONS, multiSelectionModeIntersection.isSelected());
+
+        if (multiSelectionModeIntersection.isSelected()) {
+            prefs.setGroupViewMode(GroupViewMode.INTERSECTION);
+        }
+        if (multiSelectionModeUnion.isSelected()) {
+            prefs.setGroupViewMode(GroupViewMode.UNION);
+        }
     }
 
     @Override