--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/demo/share/jfc/J2Ddemo/java2d/DemoPanel.java	Mon May 14 08:58:32 2018 -0700
@@ -0,0 +1,124 @@
+/*
+ *
+ * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *   - Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   - Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ *   - Neither the name of Oracle nor the names of its
+ *     contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package java2d;
+
+
+import static java2d.CustomControlsContext.State.START;
+import static java2d.CustomControlsContext.State.STOP;
+import java.awt.BorderLayout;
+import java.awt.Component;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import javax.swing.JPanel;
+import javax.swing.border.BevelBorder;
+import javax.swing.border.CompoundBorder;
+import javax.swing.border.EmptyBorder;
+import javax.swing.border.SoftBevelBorder;
+
+
+/**
+ * The panel for the Surface, Custom Controls & Tools.
+ * Other component types welcome.
+ */
+@SuppressWarnings("serial")
+public class DemoPanel extends JPanel {
+    private final DemoInstVarsAccessor demoInstVars;
+    public Surface surface;
+    public CustomControlsContext ccc;
+    public Tools tools;
+    public String className;
+
+    public DemoPanel(Object obj, DemoInstVarsAccessor demoInstVars) {
+        this.demoInstVars = demoInstVars;
+
+        setLayout(new BorderLayout());
+        try {
+            if (obj instanceof String) {
+                className = (String) obj;
+                obj = Class.forName(className).newInstance();
+            }
+            if (obj instanceof Component) {
+                add((Component) obj);
+            }
+            if (obj instanceof Surface) {
+                add("South", tools = new Tools(surface = (Surface) obj, demoInstVars));
+            }
+            if (obj instanceof CustomControlsContext) {
+                ccc = (CustomControlsContext) obj;
+                Component cmps[] = ccc.getControls();
+                String cons[] = ccc.getConstraints();
+                for (int i = 0; i < cmps.length; i++) {
+                    add(cmps[i], cons[i]);
+                }
+            }
+        } catch (Exception e) {
+            Logger.getLogger(DemoPanel.class.getName()).log(Level.SEVERE, null,
+                    e);
+        }
+    }
+
+    public void start() {
+        if (surface != null) {
+            surface.startClock();
+        }
+        if (tools != null && surface != null) {
+            if (tools.startStopB != null && tools.startStopB.isSelected()) {
+                surface.animating.start();
+            }
+        }
+        if (ccc != null
+                && demoInstVars.getCcthreadCB() != null
+                && demoInstVars.getCcthreadCB().isSelected()) {
+            ccc.handleThread(START);
+        }
+    }
+
+    public void stop() {
+        if (surface != null) {
+            if (surface.animating != null) {
+                surface.animating.stop();
+            }
+            surface.bimg = null;
+        }
+        if (ccc != null) {
+            ccc.handleThread(STOP);
+        }
+    }
+
+    public void setDemoBorder(JPanel p) {
+        int top = (p.getComponentCount() + 1 >= 3) ? 0 : 5;
+        int left = ((p.getComponentCount() + 1) % 2) == 0 ? 0 : 5;
+        EmptyBorder eb = new EmptyBorder(top, left, 5, 5);
+        SoftBevelBorder sbb = new SoftBevelBorder(BevelBorder.RAISED);
+        setBorder(new CompoundBorder(eb, sbb));
+    }
+}