src/share/classes/javax/swing/JComponent.java

*** 61,70 ****
--- 61,71 ----
  import javax.swing.event.*;
  import javax.swing.plaf.*;
  import static javax.swing.ClientPropertyKey.*;
  import javax.accessibility.*;
  
+ import sun.awt.SunToolkit;
  import sun.swing.SwingUtilities2;
  import sun.swing.UIClientPropertyKey;
  
  /**
   * The base class for all Swing components except top-level containers.
*** 4800,4810 ****
       * @see #isPaintingOrigin()
       * @see java.awt.Component#isShowing
       * @see RepaintManager#addDirtyRegion
       */
      public void repaint(long tm, int x, int y, int width, int height) {
!         RepaintManager.currentManager(this).addDirtyRegion(this, x, y, width, height);
      }
  
  
      /**
       * Adds the specified region to the dirty region list if the component
--- 4801,4812 ----
       * @see #isPaintingOrigin()
       * @see java.awt.Component#isShowing
       * @see RepaintManager#addDirtyRegion
       */
      public void repaint(long tm, int x, int y, int width, int height) {
!         RepaintManager.currentManager(SunToolkit.targetToAppContext(this))
!                       .addDirtyRegion(this, x, y, width, height);
      }
  
  
      /**
       * Adds the specified region to the dirty region list if the component
*** 4854,4864 ****
              // new Component). Also, if we do add a check to isValid
              // here it can potentially be called before the constructor
              // which was causing some people grief.
              return;
          }
!         if (SwingUtilities.isEventDispatchThread()) {
              invalidate();
              RepaintManager.currentManager(this).addInvalidComponent(this);
          }
          else {
              // To avoid a flood of Runnables when constructing GUIs off
--- 4856,4866 ----
              // new Component). Also, if we do add a check to isValid
              // here it can potentially be called before the constructor
              // which was causing some people grief.
              return;
          }
!         if (SunToolkit.isDispatchThreadForAppContext(this)) {
              invalidate();
              RepaintManager.currentManager(this).addInvalidComponent(this);
          }
          else {
              // To avoid a flood of Runnables when constructing GUIs off
*** 4868,4886 ****
                  if (getFlag(REVALIDATE_RUNNABLE_SCHEDULED)) {
                      return;
                  }
                  setFlag(REVALIDATE_RUNNABLE_SCHEDULED, true);
              }
!             Runnable callRevalidate = new Runnable() {
!                 public void run() {
                      synchronized(JComponent.this) {
                          setFlag(REVALIDATE_RUNNABLE_SCHEDULED, false);
                      }
                      revalidate();
!                 }
!             };
!             SwingUtilities.invokeLater(callRevalidate);
          }
      }
  
      /**
       * If this method returns true, <code>revalidate</code> calls by
--- 4870,4885 ----
                  if (getFlag(REVALIDATE_RUNNABLE_SCHEDULED)) {
                      return;
                  }
                  setFlag(REVALIDATE_RUNNABLE_SCHEDULED, true);
              }
!             SunToolkit.executeOnEventHandlerThread(this, () -> {
                  synchronized(JComponent.this) {
                      setFlag(REVALIDATE_RUNNABLE_SCHEDULED, false);
                  }
                  revalidate();
!             });
          }
      }
  
      /**
       * If this method returns true, <code>revalidate</code> calls by