Memory: Further ensure no memory leaks for with shared resources and wrappers can occur.

core/src/main/java/com/github/weisj/darklaf/settings/ThemeSettings.java

@@ -41,7 +41,7 @@ import com.github.weisj.darklaf.theme.info.PreferredThemeStyle;
 import com.github.weisj.darklaf.util.DarkUIUtil;
 import com.github.weisj.darklaf.util.LazyValue;
 import com.github.weisj.darklaf.util.LogUtil;
-import com.github.weisj.darklaf.util.MutableLazyValue;
+import com.github.weisj.darklaf.util.value.WeakShared;
 
 public class ThemeSettings implements ThemePreferenceListener {
 
@@ -49,7 +49,8 @@ public class ThemeSettings implements ThemePreferenceListener {
     private static final LazyValue<ThemeSettings> instance = new LazyValue<>(ThemeSettings::new);
     private static final LazyValue<Icon> icon = new LazyValue<>(() -> UIManager.getIcon("ThemeSettings.icon"));
 
-    private final MutableLazyValue<ThemeSettingsPanel> settingsPanel;
+    private final WeakShared<ThemeSettingsPanel> settingsPanel;
+    private ThemeSettingsPanel customThemeSettingsPanel;
 
     private JDialog dialog;
 
@@ -89,7 +90,7 @@ public class ThemeSettings implements ThemePreferenceListener {
         LafManager.addThemePreferenceChangeListener(this);
         currentConfiguration = new DefaultSettingsConfiguration();
         savedConfiguration = new DefaultSettingsConfiguration();
-        settingsPanel = new MutableLazyValue<>(() -> {
+        settingsPanel = new WeakShared<>(() -> {
             ThemeSettingsPanel panel = new ThemeSettingsPanel();
             panel.loadConfiguration(currentConfiguration);
             return panel;
@@ -155,8 +156,10 @@ public class ThemeSettings implements ThemePreferenceListener {
      */
     public void setThemeSettingsPanel(final ThemeSettingsPanel panel) {
         if (panel != null) {
-            settingsPanel.set(panel);
+            customThemeSettingsPanel = panel;
             panel.loadConfiguration(currentConfiguration);
+        } else {
+            customThemeSettingsPanel = null;
         }
     }
 
@@ -381,9 +384,7 @@ public class ThemeSettings implements ThemePreferenceListener {
             dialog.dispatchEvent(new WindowEvent(dialog, WindowEvent.WINDOW_CLOSING));
         });
         JButton apply = new JButton(UIManager.getString("dialog_apply", l));
-        apply.addActionListener(e -> {
-            apply();
-        });
+        apply.addActionListener(e -> apply());
 
         Box box = Box.createHorizontalBox();
         box.add(Box.createHorizontalGlue());
@@ -404,12 +405,19 @@ public class ThemeSettings implements ThemePreferenceListener {
         updateSettingsPanel();
     }
 
+    private ThemeSettingsPanel getThemeSettingsPanelWeak() {
+        if (customThemeSettingsPanel != null) return customThemeSettingsPanel;
+        return settingsPanel.getIfPresent();
+    }
+
     private void updateSettingsPanel() {
-        settingsPanel.ifPresent(p -> p.loadConfiguration(currentConfiguration));
+        ThemeSettingsPanel panel = getThemeSettingsPanelWeak();
+        if (panel != null) panel.loadConfiguration(currentConfiguration);
     }
 
     private void fetchFromSettingsPanel() {
-        settingsPanel.ifPresent(ThemeSettingsPanel::updateConfiguration);
+        ThemeSettingsPanel panel = getThemeSettingsPanelWeak();
+        if (panel != null) panel.updateConfiguration();
     }
 
     /** Saves the settings. */

core/src/main/java/com/github/weisj/darklaf/ui/text/bridge/DarkEditorPaneUIBridge.java

@@ -80,6 +80,7 @@ public abstract class DarkEditorPaneUIBridge extends DarkTextUI {
     }
 
     protected void updateDisplayProperties() {
+        editorPane.setEditorPane((JEditorPane) editor);
         updateDisplayProperties((JEditorPane) getComponent(),
                 new PropertyChangeEvent(editorPane, PropertyKey.FONT, editorPane.getFont(), editorPane.getFont()));
     }

core/src/main/java/com/github/weisj/darklaf/ui/text/bridge/DarkTextFieldUIBridge.java

@@ -69,7 +69,9 @@ public abstract class DarkTextFieldUIBridge extends DarkTextUI {
     @Override
     public int getBaseline(final JComponent c, final int width, final int height) {
         basicTextFieldUI.setRootView(getRootView((JTextComponent) c));
-        return basicTextFieldUI.getBaseline(c, width, height);
+        int baseLine = basicTextFieldUI.getBaseline(c, width, height);
+        basicTextFieldUI.setRootView(null);
+        return baseLine;
     }
 
     @Override

core/src/main/java/com/github/weisj/darklaf/ui/text/dummy/DummyEditorPane.java

@@ -27,6 +27,7 @@ import java.awt.event.MouseListener;
 import java.awt.event.MouseMotionListener;
 import java.awt.event.MouseWheelListener;
 import java.beans.PropertyChangeListener;
+import java.lang.ref.WeakReference;
 
 import javax.swing.*;
 import javax.swing.event.DocumentListener;
@@ -38,18 +39,18 @@ import javax.swing.text.Highlighter;
 
 public class DummyEditorPane extends JEditorPane {
 
-    private JEditorPane editorPane;
+    private WeakReference<JEditorPane> editorPane;
     private PropertyChangeListener propertyChangeListener;
 
-    public void setEditorPane(final JEditorPane editorPane) {
-        this.editorPane = editorPane;
-        if (editorPane != null) {
-            copyProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES);
-            copyProperty(JEditorPane.W3C_LENGTH_UNITS);
+    public void setEditorPane(final JEditorPane editor) {
+        this.editorPane = new WeakReference<>(editor);
+        if (editor != null) {
+            copyProperty(JEditorPane.HONOR_DISPLAY_PROPERTIES, editor);
+            copyProperty(JEditorPane.W3C_LENGTH_UNITS, editor);
         }
     }
 
-    protected void copyProperty(final String key) {
+    protected void copyProperty(final String key, final JEditorPane editorPane) {
         putClientProperty(key, editorPane.getClientProperty(key));
     }
 
@@ -57,33 +58,43 @@ public class DummyEditorPane extends JEditorPane {
         return propertyChangeListener;
     }
 
+    private JEditorPane getEditor() {
+        return editorPane != null ? editorPane.get() : null;
+    }
+
     @Override
     public Document getDocument() {
-        if (editorPane == null) return super.getDocument();
-        return editorPane.getDocument();
+        JEditorPane editor = getEditor();
+        if (editor == null) return super.getDocument();
+        return editor.getDocument();
     }
 
     @Override
     public Font getFont() {
-        if (editorPane == null) return null;
-        return editorPane.getFont();
+        JEditorPane editor = getEditor();
+        if (editor == null) return null;
+        return editor.getFont();
     }
 
     @Override
     public Color getForeground() {
-        if (editorPane == null) return null;
-        return editorPane.getForeground();
+        JEditorPane editor = getEditor();
+        if (editor == null) return null;
+        return editor.getForeground();
     }
 
     @Override
     public Color getBackground() {
-        if (editorPane == null) return null;
-        return editorPane.getBackground();
+        JEditorPane editor = getEditor();
+        if (editor == null) return null;
+        return editor.getBackground();
     }
 
     @Override
     public boolean isEditable() {
-        return editorPane.isEditable();
+        JEditorPane editor = getEditor();
+        if (editor == null) return false;
+        return editor.isEditable();
     }
 
     @Override

core/src/main/java/com/github/weisj/darklaf/ui/text/dummy/DummyTextFieldUI.java

@@ -21,20 +21,23 @@
  */
 package com.github.weisj.darklaf.ui.text.dummy;
 
+import java.lang.ref.WeakReference;
+
 import javax.swing.plaf.basic.BasicTextFieldUI;
 import javax.swing.text.JTextComponent;
 import javax.swing.text.View;
 
 public class DummyTextFieldUI extends BasicTextFieldUI {
 
-    private View rootView;
+    private WeakReference<View> rootView;
 
     @Override
     public View getRootView(final JTextComponent tc) {
-        return rootView != null ? rootView : super.getRootView(tc);
+        View view = rootView != null ? rootView.get() : null;
+        return view != null ? view : super.getRootView(tc);
     }
 
     public void setRootView(final View rootView) {
-        this.rootView = rootView;
+        this.rootView = new WeakReference<>(rootView);
     }
 }

utils/src/main/java/com/github/weisj/darklaf/util/value/WeakShared.java

@@ -56,4 +56,9 @@ public class WeakShared<T> {
         }
         return value;
     }
+
+    public T getIfPresent() {
+        WeakReference<T> ref = reference;
+        return ref != null ? ref.get() : null;
+    }
 }