adds JTabbedPane and initial focus business

java2script · BobHanson · Jul 25, 2018 · Jul 24, 2018 · Jul 25, 2018 · Jul 25, 2018
commit 9727e3831187ed73dcbcc9a86aeaebb8a86ec4c8
diff --git a/sources/net.sf.j2s.java.core/src/java/awt/Component.java b/sources/net.sf.j2s.java.core/src/java/awt/Component.java
diff --git a/sources/net.sf.j2s.java.core/src/java/awt/Container.java b/sources/net.sf.j2s.java.core/src/java/awt/Container.java
diff --git a/sources/net.sf.j2s.java.core/src/java/awt/ContainerOrderFocusTraversalPolicy.java b/sources/net.sf.j2s.java.core/src/java/awt/ContainerOrderFocusTraversalPolicy.java
diff --git a/sources/net.sf.j2s.java.core/src/java/awt/DefaultFocusTraversalPolicy.java b/sources/net.sf.j2s.java.core/src/java/awt/DefaultFocusTraversalPolicy.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ *
+ */
+package java.awt;
+
+import java.awt.peer.ComponentPeer;
+
+
+/**
+ * A FocusTraversalPolicy that determines traversal order based on the order
+ * of child Components in a Container. From a particular focus cycle root, the
+ * policy makes a pre-order traversal of the Component hierarchy, and traverses
+ * a Container's children according to the ordering of the array returned by
+ * <code>Container.getComponents()</code>. Portions of the hierarchy that are
+ * not visible and displayable will not be searched.
+ * <p>
+ * If client code has explicitly set the focusability of a Component by either
+ * overriding <code>Component.isFocusTraversable()</code> or
+ * <code>Component.isFocusable()</code>, or by calling
+ * <code>Component.setFocusable()</code>, then a DefaultFocusTraversalPolicy
+ * behaves exactly like a ContainerOrderFocusTraversalPolicy. If, however, the
+ * Component is relying on default focusability, then a
+ * DefaultFocusTraversalPolicy will reject all Components with non-focusable
+ * peers. This is the default FocusTraversalPolicy for all AWT Containers.
+ * <p>
+ * The focusability of a peer is implementation-dependent. Sun recommends that
+ * all implementations for a particular native platform construct peers with
+ * the same focusability. The recommendations for Windows and Unix are that
+ * Canvases, Labels, Panels, Scrollbars, ScrollPanes, Windows, and lightweight
+ * Components have non-focusable peers, and all other Components have focusable
+ * peers. These recommendations are used in the Sun AWT implementations. Note
+ * that the focusability of a Component's peer is different from, and does not
+ * impact, the focusability of the Component itself.
+ * <p>
+ * Please see
+ * <a href="https://docs.oracle.com/javase/tutorial/uiswing/misc/focus.html">
+ * How to Use the Focus Subsystem</a>,
+ * a section in <em>The Java Tutorial</em>, and the
+ * <a href="../../java/awt/doc-files/FocusSpec.html">Focus Specification</a>
+ * for more information.
+ *
+ * @author David Mendenhall
+ *
+ * @see Container#getComponents
+ * @see Component#isFocusable
+ * @see Component#setFocusable
+ * @since 1.4
+ */
+public class DefaultFocusTraversalPolicy
+    extends ContainerOrderFocusTraversalPolicy
+{
+    /*
+     * serialVersionUID
+     */
+    private static final long serialVersionUID = 8876966522510157497L;
+
+    /**
+     * Determines whether a Component is an acceptable choice as the new
+     * focus owner. The Component must be visible, displayable, and enabled
+     * to be accepted. If client code has explicitly set the focusability
+     * of the Component by either overriding
+     * <code>Component.isFocusTraversable()</code> or
+     * <code>Component.isFocusable()</code>, or by calling
+     * <code>Component.setFocusable()</code>, then the Component will be
+     * accepted if and only if it is focusable. If, however, the Component is
+     * relying on default focusability, then all Canvases, Labels, Panels,
+     * Scrollbars, ScrollPanes, Windows, and lightweight Components will be
+     * rejected.
+     *
+     * @param aComponent the Component whose fitness as a focus owner is to
+     *        be tested
+     * @return <code>true</code> if aComponent meets the above requirements;
+     *         <code>false</code> otherwise
+     */
+    protected boolean accept(Component aComponent) {
+        if (!(aComponent.isVisible() && aComponent.isDisplayable() &&
+              aComponent.isEnabled()))
+        {
+            return false;
+        }
+
+        // Verify that the Component is recursively enabled. Disabling a
+        // heavyweight Container disables its children, whereas disabling
+        // a lightweight Container does not.
+        if (!(aComponent instanceof Window)) {
+            for (Container enableTest = aComponent.getParent();
+                 enableTest != null;
+                 enableTest = enableTest.getParent())
+            {
+                if (!(enableTest.isEnabled() || enableTest.isLightweight())) {
+                    return false;
+                }
+                if (enableTest instanceof Window) {
+                    break;
+                }
+            }
+        }
+
+        boolean focusable = aComponent.isFocusable();
+        if (aComponent.isFocusTraversableOverridden()) {
+            return focusable;
+        }
+
+        ComponentPeer peer = aComponent.getPeer();
+        return (peer != null && peer.isFocusable());
+    }
+}