src/java.desktop/share/classes/javax/swing/plaf/ComponentUI.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -28,14 +28,14 @@
 import javax.swing.JComponent;
 import javax.swing.SwingUtilities;
 import javax.accessibility.Accessible;
 
 import java.awt.Component;
-import java.awt.Container;
 import java.awt.Dimension;
 import java.awt.Graphics;
-import java.awt.Insets;
+import javax.swing.UIManager;
+import sun.swing.SwingUtilities2;
 
 
 /**
  * The base class for all UI delegate objects in the Swing pluggable
  * look and feel architecture.  The UI delegate object for a Swing

@@ -50,10 +50,13 @@
  * @see javax.swing.JComponent
  * @see javax.swing.UIManager
  *
  */
 public abstract class ComponentUI {
+
+     private TextUIDrawing textUIDrawing;
+
     /**
      * Sole constructor. (For invocation by subclass constructors,
      * typically implicit.)
      */
     public ComponentUI() {

@@ -83,10 +86,18 @@
      * @see #uninstallUI
      * @see javax.swing.JComponent#setUI
      * @see javax.swing.JComponent#updateUI
      */
     public void installUI(JComponent c) {
+
+        if (textUIDrawing == null || textUIDrawing instanceof UIResource) {
+            textUIDrawing = (TextUIDrawing) UIManager.get("uiDrawing.text");
+        }
+
+        if (textUIDrawing == null) {
+            textUIDrawing = SwingUtilities2.DEFAULT_UI_TEXT_DRAWING;
+        }
     }
 
     /**
      * Reverses configuration which was done on the specified component during
      * <code>installUI</code>.  This method is invoked when this

@@ -111,10 +122,13 @@
      *
      * @see #installUI
      * @see javax.swing.JComponent#updateUI
      */
     public void uninstallUI(JComponent c) {
+        if (textUIDrawing instanceof UIResource) {
+            textUIDrawing = null;
+        }
     }
 
     /**
      * Paints the specified component appropriately for the look and feel.
      * This method is invoked from the <code>ComponentUI.update</code> method when

@@ -363,6 +377,18 @@
      * @see #getAccessibleChildrenCount
      */
     public Accessible getAccessibleChild(JComponent c, int i) {
         return SwingUtilities.getAccessibleChild(c, i);
     }
+
+    /**
+     * Returns the {@code TextUIDrawing} instance responsible for text drawing
+     * and measuring.
+     *
+     * @return {@code TextUIDrawing} instance
+     *
+     * @since 9
+     */
+    public TextUIDrawing getTextUIDrawing() {
+        return textUIDrawing;
+    }
 }