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25 
26 package sun.lwawt.macosx;
27 
28 import java.awt.Menu;
29 import java.awt.MenuBar;
30 import java.awt.MenuItem;
31 import java.awt.peer.MenuItemPeer;
32 import java.awt.peer.MenuPeer;
33 
34 public class CMenu extends CMenuItem implements MenuPeer {
35 
CMenu(Menu target)36     public CMenu(Menu target) {
37         super(target);
38     }
39 
40     // This way we avoiding invocation of the setters twice
41     @Override
initialize(MenuItem target)42     protected final void initialize(MenuItem target) {
43         setLabel(target.getLabel());
44         setEnabled(target.isEnabled());
45     }
46 
47     @Override
setEnabled(final boolean b)48     public final void setEnabled(final boolean b) {
49         super.setEnabled(b);
50         final Menu target = (Menu) getTarget();
51         final int count = target.getItemCount();
52         for (int i = 0; i < count; ++i) {
53             MenuItem item = target.getItem(i);
54             MenuItemPeer p = (MenuItemPeer) LWCToolkit.targetToPeer(item);
55             if (p != null) {
56                 p.setEnabled(b && item.isEnabled());
57             }
58         }
59     }
60 
61     @Override
createModel()62     long createModel() {
63         CMenuComponent parent = (CMenuComponent)
64             LWCToolkit.targetToPeer(getTarget().getParent());
65 
66         if (parent instanceof CMenu) {
67             return parent.executeGet(this::nativeCreateSubMenu);
68         }
69         if (parent instanceof CMenuBar) {
70             MenuBar parentContainer = (MenuBar)getTarget().getParent();
71             boolean isHelpMenu = parentContainer.getHelpMenu() == getTarget();
72             int insertionLocation = ((CMenuBar)parent).getNextInsertionIndex();
73             return parent.executeGet(ptr -> nativeCreateMenu(ptr, isHelpMenu,
74                                                              insertionLocation));
75         }
76         throw new InternalError("Parent must be CMenu or CMenuBar");
77     }
78 
79     @Override
addItem(MenuItem item)80     public final void addItem(MenuItem item) {
81         // Nothing to do here -- we added it when we created the
82         // menu item's peer.
83     }
84 
85     @Override
delItem(final int index)86     public final void delItem(final int index) {
87         execute(ptr -> nativeDeleteItem(ptr, index));
88     }
89 
90     @Override
setLabel(final String label)91     public final void setLabel(final String label) {
92         execute(ptr->nativeSetMenuTitle(ptr, label));
93         super.setLabel(label);
94     }
95 
96     // Used by ScreenMenuBar to get to the native menu for event handling.
getNativeMenu()97     public final long getNativeMenu() {
98         return executeGet(this::nativeGetNSMenu);
99     }
100 
nativeCreateMenu(long parentMenuPtr, boolean isHelpMenu, int insertionLocation)101     private native long nativeCreateMenu(long parentMenuPtr,
102                                          boolean isHelpMenu,
103                                          int insertionLocation);
nativeCreateSubMenu(long parentMenuPtr)104     private native long nativeCreateSubMenu(long parentMenuPtr);
nativeSetMenuTitle(long menuPtr, String title)105     private native void nativeSetMenuTitle(long menuPtr, String title);
nativeDeleteItem(long menuPtr, int index)106     private native void nativeDeleteItem(long menuPtr, int index);
107 
108     // Returns a retained NSMenu object! We have to explicitly
109     // release at some point!
nativeGetNSMenu(long menuPtr)110     private native long nativeGetNSMenu(long menuPtr);
111 }
112