Implement reset for MainTablePreferences

jabgui/src/main/java/org/jabref/gui/maintable/MainTablePreferences.java

@@ -1,5 +1,7 @@
 package org.jabref.gui.maintable;
 
+import java.util.Collections;
+
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.SimpleBooleanProperty;
 
@@ -16,6 +18,26 @@ public MainTablePreferences(ColumnPreferences columnPreferences,
         this.extraFileColumnsEnabled.set(extraFileColumnsEnabled);
     }
 
+    /// Creates Object with default values
+    private MainTablePreferences() {
+        this(
+                new ColumnPreferences(Collections.emptyList(), Collections.emptyList()),  // Default column preferences
+                false,                                                                    // Default resize columns to fit
+                false                                                                     // Default extra file columns disabled
+        );
+    }
+
+    public static MainTablePreferences getDefault() {
+        return new MainTablePreferences();
+    }
+
+    public void setAll(MainTablePreferences preferences) {
+        this.columnPreferences.setColumns(preferences.getColumnPreferences().getColumns());
+        this.columnPreferences.setColumnSortOrder(preferences.getColumnPreferences().getColumnSortOrder());
+        this.setResizeColumnsToFit(preferences.getResizeColumnsToFit());
+        this.setExtraFileColumnsEnabled(preferences.getExtraFileColumnsEnabled());
+    }
+
     public ColumnPreferences getColumnPreferences() {
         return columnPreferences;
     }

jabgui/src/main/java/org/jabref/gui/preferences/JabRefGuiPreferences.java

@@ -399,6 +399,7 @@ public void clear() throws BackingStoreException {
         getDonationPreferences().setAll(DonationPreferences.getDefault());
         getNewEntryPreferences().setAll(NewEntryPreferences.getDefault());
         getSpecialFieldsPreferences().setAll(SpecialFieldsPreferences.getDefault());
+        getMainTablePreferences().setAll(MainTablePreferences.getDefault());
     }
 
     @Override
@@ -411,6 +412,7 @@ public void importPreferences(Path path) throws JabRefException {
         getDonationPreferences().setAll(getDonationPreferencesFromBackingStore(getDonationPreferences()));
         getNewEntryPreferences().setAll(getNewEntryPreferencesFromBackingStore(getNewEntryPreferences()));
         getSpecialFieldsPreferences().setAll(getSpecialFieldsPreferencesFromBackingStore(getSpecialFieldsPreferences()));
+        getMainTablePreferences().setAll(getMainTablePreferencesFromBackingStore(getMainTablePreferences()));
     }
 
     // region EntryEditorPreferences
@@ -997,10 +999,7 @@ public MainTablePreferences getMainTablePreferences() {
             return mainTablePreferences;
         }
 
-        mainTablePreferences = new MainTablePreferences(
-                getMainTableColumnPreferences(),
-                getBoolean(AUTO_RESIZE_MODE),
-                getBoolean(EXTRA_FILE_COLUMNS));
+        mainTablePreferences = getMainTablePreferencesFromBackingStore(MainTablePreferences.getDefault());
 
         EasyBind.listen(mainTablePreferences.resizeColumnsToFitProperty(),
                 (obs, oldValue, newValue) -> putBoolean(AUTO_RESIZE_MODE, newValue));
@@ -1010,6 +1009,14 @@ public MainTablePreferences getMainTablePreferences() {
         return mainTablePreferences;
     }
 
+    private MainTablePreferences getMainTablePreferencesFromBackingStore(MainTablePreferences defaults) {
+        return new MainTablePreferences(
+                getMainTableColumnPreferences(),
+                getBoolean(AUTO_RESIZE_MODE, defaults.getResizeColumnsToFit()),
+                getBoolean(EXTRA_FILE_COLUMNS, defaults.getExtraFileColumnsEnabled())
+        );
+    }
+
     public ColumnPreferences getMainTableColumnPreferences() {
         if (mainTableColumnPreferences != null) {
             return mainTableColumnPreferences;