Show a warning in the merge dialog when authors are the same but formatted differently

CHANGELOG.md

@@ -15,6 +15,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - On startup, JabRef notifies the user if there were parsing errors during opening.
 - We integrated a new three-way merge UI for merging entries in the Entries Merger Dialog, the Duplicate Resolver Dialog, the Entry Importer Dialog, and the External Changes Resolver Dialog. [#8945](https://github.com/JabRef/jabref/pull/8945)
 - We added the ability to merge groups, keywords, comments and files when merging entries. [#9022](https://github.com/JabRef/jabref/pull/9022)
+- We added a warning message next to the authors field in the merge dialog to warn users when the authors are the same but formatted differently. [#8745](https://github.com/JabRef/jabref/issues/8745)
 
 ### Changed
 

src/main/java/org/jabref/gui/mergeentries/newmergedialog/FieldRowView.java

@@ -5,7 +5,9 @@
 import javax.swing.undo.CannotUndoException;
 import javax.swing.undo.CompoundEdit;
 
+import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ReadOnlyStringProperty;
+import javafx.beans.property.SimpleBooleanProperty;
 import javafx.scene.control.ToggleGroup;
 import javafx.scene.layout.GridPane;
 
@@ -34,15 +36,17 @@
  */
 public class FieldRowView {
     private static final Logger LOGGER = LoggerFactory.getLogger(FieldRowView.class);
+
+    protected final FieldRowViewModel viewModel;
+
+    protected final BooleanProperty shouldShowDiffs = new SimpleBooleanProperty(true);
     private final FieldNameCell fieldNameCell;
     private final FieldValueCell leftValueCell;
     private final FieldValueCell rightValueCell;
     private final MergedFieldCell mergedValueCell;
 
     private final ToggleGroup toggleGroup = new ToggleGroup();
 
-    private final FieldRowViewModel viewModel;
-
     private final CompoundEdit fieldsMergedEdit = new CompoundEdit();
 
     public FieldRowView(Field field, BibEntry leftEntry, BibEntry rightEntry, BibEntry mergedEntry, FieldMergerFactory fieldMergerFactory, int rowIndex) {
@@ -159,10 +163,12 @@ public void showDiff(ShowDiffConfig diffConfig) {
         StyleClassedTextArea rightLabel = rightValueCell.getStyleClassedLabel();
         // Clearing old diff styles based on previous diffConfig
         hideDiff();
-        if (diffConfig.diffView() == ThreeWayMergeToolbar.DiffView.UNIFIED) {
-            new UnifiedDiffHighlighter(leftLabel, rightLabel, diffConfig.diffHighlightingMethod()).highlight();
-        } else {
-            new SplitDiffHighlighter(leftLabel, rightLabel, diffConfig.diffHighlightingMethod()).highlight();
+        if (shouldShowDiffs.get()) {
+            if (diffConfig.diffView() == ThreeWayMergeToolbar.DiffView.UNIFIED) {
+                new UnifiedDiffHighlighter(leftLabel, rightLabel, diffConfig.diffHighlightingMethod()).highlight();
+            } else {
+                new SplitDiffHighlighter(leftLabel, rightLabel, diffConfig.diffHighlightingMethod()).highlight();
+            }
         }
     }
 

src/main/java/org/jabref/gui/mergeentries/newmergedialog/PersonsNameFieldRowView.java

@@ -0,0 +1,34 @@
+package org.jabref.gui.mergeentries.newmergedialog;
+
+import org.jabref.gui.mergeentries.newmergedialog.cell.sidebuttons.InfoButton;
+import org.jabref.gui.mergeentries.newmergedialog.fieldsmerger.FieldMergerFactory;
+import org.jabref.logic.importer.AuthorListParser;
+import org.jabref.logic.l10n.Localization;
+import org.jabref.model.entry.AuthorList;
+import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.field.Field;
+import org.jabref.model.entry.field.FieldProperty;
+
+public class PersonsNameFieldRowView extends FieldRowView {
+    private final AuthorList leftEntryNames;
+    private final AuthorList rightEntryNames;
+
+    public PersonsNameFieldRowView(Field field, BibEntry leftEntry, BibEntry rightEntry, BibEntry mergedEntry, FieldMergerFactory fieldMergerFactory, int rowIndex) {
+        super(field, leftEntry, rightEntry, mergedEntry, fieldMergerFactory, rowIndex);
+        assert field.getProperties().contains(FieldProperty.PERSON_NAMES);
+
+        var authorsParser = new AuthorListParser();
+        leftEntryNames = authorsParser.parse(viewModel.getLeftFieldValue());
+        rightEntryNames = authorsParser.parse(viewModel.getRightFieldValue());
+
+        if (!leftEntry.equals(rightEntry) && leftEntryNames.equals(rightEntryNames)) {
+            showPersonsNamesAreTheSameInfo();
+            shouldShowDiffs.set(false);
+        }
+    }
+
+    private void showPersonsNamesAreTheSameInfo() {
+        InfoButton infoButton = new InfoButton(Localization.lang("The %0s are the same. However, the order of field content differs", viewModel.getField().getName()));
+        getFieldNameCell().addSideButton(infoButton);
+    }
+}

src/main/java/org/jabref/gui/mergeentries/newmergedialog/ThreeWayMergeView.java

@@ -17,6 +17,7 @@
 import org.jabref.logic.l10n.Localization;
 import org.jabref.model.entry.BibEntry;
 import org.jabref.model.entry.field.Field;
+import org.jabref.model.entry.field.FieldProperty;
 
 public class ThreeWayMergeView extends VBox {
     public static final int GRID_COLUMN_MIN_WIDTH = 250;
@@ -119,7 +120,12 @@ private Field getFieldAtIndex(int index) {
     private void addRow(int fieldIndex) {
         Field field = getFieldAtIndex(fieldIndex);
 
-        FieldRowView fieldRow = new FieldRowView(field, getLeftEntry(), getRightEntry(), getMergedEntry(), fieldMergerFactory, fieldIndex);
+        FieldRowView fieldRow;
+        if (field.getProperties().contains(FieldProperty.PERSON_NAMES)) {
+            fieldRow = new PersonsNameFieldRowView(field, getLeftEntry(), getRightEntry(), getMergedEntry(), fieldMergerFactory, fieldIndex);
+        } else {
+            fieldRow = new FieldRowView(field, getLeftEntry(), getRightEntry(), getMergedEntry(), fieldMergerFactory, fieldIndex);
+        }
 
         fieldRows.add(fieldIndex, fieldRow);
 

src/main/java/org/jabref/gui/mergeentries/newmergedialog/cell/sidebuttons/InfoButton.java

@@ -0,0 +1,51 @@
+package org.jabref.gui.mergeentries.newmergedialog.cell.sidebuttons;
+
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+import javafx.scene.control.Button;
+
+import org.jabref.gui.Globals;
+import org.jabref.gui.actions.Action;
+import org.jabref.gui.actions.ActionFactory;
+import org.jabref.gui.actions.SimpleCommand;
+import org.jabref.gui.icon.IconTheme;
+
+import com.tobiasdiez.easybind.EasyBind;
+
+public class InfoButton extends Button {
+    private final StringProperty infoMessage = new SimpleStringProperty();
+    private final ActionFactory actionFactory = new ActionFactory(Globals.getKeyPrefs());
+
+    public InfoButton(String infoMessage) {
+        setInfoMessage(infoMessage);
+        configureButton();
+        EasyBind.subscribe(infoMessageProperty(), newWarningMessage -> {
+            configureButton();
+        });
+    }
+
+    private void configureButton() {
+        setMaxHeight(Double.MAX_VALUE);
+        setFocusTraversable(false);
+        Action mergeAction = new Action.Builder(getInfoMessage()).setIcon(IconTheme.JabRefIcons.INTEGRITY_INFO);
+
+        actionFactory.configureIconButton(mergeAction, new SimpleCommand() {
+            @Override
+            public void execute() {
+                // The info button is not meant to be clickable that's why this is empty
+            }
+        }, this);
+    }
+
+    private void setInfoMessage(String infoMessage) {
+        infoMessageProperty().set(infoMessage);
+    }
+
+    public StringProperty infoMessageProperty() {
+        return infoMessage;
+    }
+
+    public String getInfoMessage() {
+        return infoMessage.get();
+    }
+}

src/main/resources/l10n/JabRef_en.properties

@@ -2525,3 +2525,6 @@ Merge\ %0=Merge %0
 Right\ Entry=Right Entry
 Unmerge\ %0=Unmerge %0
 plain\ text=plain text
+
+The\ %0s\ are\ the\ same.\ However,\ the\ order\ of\ field\ content\ differs=The %0s are the same. However, the order of field content differs
+