1 /*
   2  * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.lwawt.macosx;
  27 
  28 import java.awt.MenuItem;
  29 import java.awt.MenuShortcut;
  30 import java.awt.event.ActionEvent;
  31 import java.awt.event.InputEvent;
  32 import java.awt.event.KeyEvent;
  33 import java.awt.peer.MenuItemPeer;
  34 import java.util.concurrent.atomic.AtomicBoolean;
  35 
  36 import sun.awt.SunToolkit;
  37 import sun.lwawt.LWToolkit;
  38 
  39 public class CMenuItem extends CMenuComponent implements MenuItemPeer {
  40 
  41     private final AtomicBoolean enabled = new AtomicBoolean(true);
  42 
  43     public CMenuItem(MenuItem target) {
  44         super(target);
  45         initialize(target);
  46     }
  47 
  48     // This way we avoiding invocation of the setters twice
  49     protected void initialize(MenuItem target) {
  50         if (!isSeparator()) {
  51             setLabel(target.getLabel());
  52             setEnabled(target.isEnabled());
  53         }
  54     }
  55 
  56     private boolean isSeparator() {
  57         String label = ((MenuItem)getTarget()).getLabel();
  58         return (label != null && label.equals("-"));
  59     }
  60 
  61     @Override
  62     long createModel() {
  63         CMenuComponent parent = (CMenuComponent)LWToolkit.targetToPeer(getTarget().getParent());
  64         return parent.executeGet(ptr->nativeCreate(ptr, isSeparator()));
  65     }
  66     @SuppressWarnings("deprecation")
  67     public void setLabel(String label, char keyChar, int keyCode, int modifiers) {
  68         int keyMask = modifiers;
  69         if (keyCode == KeyEvent.VK_UNDEFINED) {
  70             MenuShortcut shortcut = ((MenuItem)getTarget()).getShortcut();
  71 
  72             if (shortcut != null) {
  73                 keyCode = shortcut.getKey();
  74                 keyMask |= InputEvent.META_MASK;
  75 
  76                 if (shortcut.usesShiftModifier()) {
  77                     keyMask |= InputEvent.SHIFT_MASK;
  78                 }
  79             }
  80         }
  81 
  82         if (label == null) {
  83             label = "";
  84         }
  85 
  86         // <rdar://problem/3654824>
  87         // Native code uses a keyChar of 0 to indicate that the
  88         // keyCode should be used to generate the shortcut.  Translate
  89         // CHAR_UNDEFINED into 0.
  90         if (keyChar == KeyEvent.CHAR_UNDEFINED) {
  91             keyChar = 0;
  92         }
  93 
  94         final String finalLabel = label;
  95         final char finalKeyChar = keyChar;
  96         final int finalKeyCode = keyCode;
  97         final int finalKeyMask = keyMask;
  98         execute(ptr -> nativeSetLabel(ptr, finalLabel, finalKeyChar,
  99                                       finalKeyCode, finalKeyMask));
 100     }
 101 
 102     @Override
 103     public void setLabel(String label) {
 104         setLabel(label, (char)0, KeyEvent.VK_UNDEFINED, 0);
 105     }
 106 
 107     /**
 108      * This is new API that we've added to AWT menu items
 109      * because AWT menu items are used for Swing screen menu bars
 110      * and we want to support the NSMenuItem image apis.
 111      * There isn't a need to expose this except in a instanceof because
 112      * it isn't defined in the peer api.
 113      */
 114     public final void setImage(final java.awt.Image img) {
 115         CImage cimg = CImage.getCreator().createFromImage(img);
 116         execute(ptr -> {
 117             if (cimg == null) {
 118                 nativeSetImage(ptr, 0L);
 119             } else {
 120                 cimg.execute(imgPtr -> nativeSetImage(ptr, imgPtr));
 121             }
 122         });
 123     }
 124 
 125     /**
 126      * New API for tooltips
 127      */
 128     public final void setToolTipText(final String text) {
 129         execute(ptr -> nativeSetTooltip(ptr, text));
 130     }
 131 










 132     public final boolean isEnabled() {
 133         return enabled.get();
 134     }
 135 
 136     @Override
 137     public void setEnabled(boolean b) {
 138         final Object parent = LWToolkit.targetToPeer(getTarget().getParent());
 139         if (parent instanceof CMenuItem) {
 140             b &= ((CMenuItem) parent).isEnabled();
 141         }
 142         if (enabled.compareAndSet(!b, b)) {
 143             final boolean finalB = b;
 144             execute(ptr->nativeSetEnabled(ptr, finalB));
 145         }
 146     }
 147 
 148     private native long nativeCreate(long parentMenu, boolean isSeparator);
 149     private native void nativeSetLabel(long modelPtr, String label, char keyChar, int keyCode, int modifiers);
 150     private native void nativeSetImage(long modelPtr, long image);
 151     private native void nativeSetTooltip(long modelPtr, String text);
 152     private native void nativeSetEnabled(long modelPtr, boolean b);
 153 
 154     // native callbacks
 155     void handleAction(final long when, final int modifiers) {
 156         SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() {
 157             public void run() {
 158                 final String cmd = ((MenuItem)getTarget()).getActionCommand();
 159                 final ActionEvent event = new ActionEvent(getTarget(), ActionEvent.ACTION_PERFORMED, cmd, when, modifiers);
 160                 SunToolkit.postEvent(SunToolkit.targetToAppContext(getTarget()), event);
 161             }
 162         });
 163     }
 164 }
--- EOF ---