bundles/org.eclipse.swt/Eclipse SWT/carbon/org/eclipse/swt/widgets/MenuItem.java - platform/eclipse.platform.swt - Git at Google

 package org.eclipse.swt.widgets;

 /*
  * Copyright (c) 2000, 2002 IBM Corp.  All rights reserved.
  * This file is made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  */

 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.events.*;
 import org.eclipse.swt.internal.carbon.*;

 public class MenuItem extends Item {
 	Menu parent, menu;
 	int id, accelerator;

 public MenuItem (Menu parent, int style) {
 	super (parent, checkStyle (style));
 	this.parent = parent;
 	parent.createItem (this, parent.getItemCount ());
 }

 public MenuItem (Menu parent, int style, int index) {
 	super (parent, checkStyle (style));
 	this.parent = parent;
 	parent.createItem (this, index);
 }

 public void _setEnabled (boolean enabled) {
 	short [] outIndex = new short [1];
 	OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex);
 	int outMenuRef [] = new int [1];
 	OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef);
 	if (enabled) {
 		if (outMenuRef [0] != 0) OS.EnableMenuItem (outMenuRef [0], (short) 0);
 		OS.EnableMenuCommand (parent.handle, id);
 	} else {
 		if (outMenuRef [0] != 0) OS.DisableMenuItem (outMenuRef [0], (short) 0);
 		OS.DisableMenuCommand (parent.handle, id);
 	}
 }

 public void addArmListener (ArmListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Arm, typedListener);
 }

 public void addHelpListener (HelpListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Help, typedListener);
 }

 public void addSelectionListener (SelectionListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener(listener);
 	addListener (SWT.Selection,typedListener);
 	addListener (SWT.DefaultSelection,typedListener);
 }

 protected void checkSubclass () {
 	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
 }

 static int checkStyle (int style) {
 	return checkBits (style, SWT.PUSH, SWT.CHECK, SWT.RADIO, SWT.SEPARATOR, SWT.CASCADE, 0);
 }

 public int getAccelerator () {
 	checkWidget ();
 	return accelerator;
 }

 public Display getDisplay () {
 	Menu parent = this.parent;
 	if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
 	return parent.getDisplay ();
 }

 public boolean getEnabled () {
 	checkWidget();
 	return (state & DISABLED) == 0;
 }

 public Menu getMenu () {
 	checkWidget ();
 	return menu;
 }

 String getNameText () {
 	if ((style & SWT.SEPARATOR) != 0) return "|";
 	return super.getNameText ();
 }

 public Menu getParent () {
 	checkWidget ();
 	return parent;
 }

 public boolean getSelection () {
 	checkWidget ();
 	if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return false;
 	char [] outMark = new char [1];
 	if (OS.GetMenuCommandMark (parent.handle, id, outMark) != OS.noErr) {
 		error (SWT.ERROR_CANNOT_GET_SELECTION);
 	}
 	return outMark [0] != 0;
 }

 int kEventProcessCommand (int nextHandler, int theEvent, int userData) {
 	//TEMPORARY CODE
 	if (!isEnabled ()) return OS.noErr;

 	if ((style & SWT.CHECK) != 0) {
 		setSelection (!getSelection ());
 	} else {
 		if ((style & SWT.RADIO) != 0) {
 			if ((parent.getStyle () & SWT.NO_RADIO_GROUP) != 0) {
 				setSelection (!getSelection ());
 			} else {
 				selectRadio ();
 			}
 		}
 	}
 	int [] modifiers = new int [1];
 	OS.GetEventParameter (theEvent, OS.kEventParamKeyModifiers, OS.typeUInt32, null, 4, null, modifiers);
 	Event event = new Event ();
 	setInputState (event, (short) 0, OS.GetCurrentEventButtonState (), modifiers [0]);
 	postEvent (SWT.Selection, event);
 	return OS.noErr;
 }

 public boolean isEnabled () {
 	return getEnabled () && parent.isEnabled ();
 }

 int keyGlyph (int key) {
 	switch (key) {
 		case SWT.BS: return OS.kMenuDeleteLeftGlyph;
 		case SWT.CR: return OS.kMenuReturnGlyph;
 		case SWT.DEL: return OS.kMenuDeleteRightGlyph;
 		case SWT.ESC: return OS.kMenuEscapeGlyph;
 		case SWT.LF: return OS.kMenuReturnGlyph;
 		case SWT.TAB: return OS.kMenuTabRightGlyph;
 		case ' ': return OS.kMenuBlankGlyph;
 //		case ' ': return OS.kMenuSpaceGlyph;
 		case SWT.ALT: return OS.kMenuOptionGlyph;
 		case SWT.SHIFT: return OS.kMenuShiftGlyph;
 		case SWT.CONTROL: return OS.kMenuControlISOGlyph;
 		case SWT.COMMAND: return OS.kMenuCommandGlyph;
 		case SWT.ARROW_UP: return OS.kMenuUpArrowGlyph;
 		case SWT.ARROW_DOWN: return OS.kMenuDownArrowGlyph;
 		case SWT.ARROW_LEFT: return OS.kMenuLeftArrowGlyph;
 		case SWT.ARROW_RIGHT: return OS.kMenuRightArrowGlyph;
 		case SWT.PAGE_UP: return OS.kMenuPageUpGlyph;
 		case SWT.PAGE_DOWN: return OS.kMenuPageDownGlyph;
 		case SWT.F1: return OS.kMenuF1Glyph;
 		case SWT.F2: return OS.kMenuF2Glyph;
 		case SWT.F3: return OS.kMenuF3Glyph;
 		case SWT.F4: return OS.kMenuF4Glyph;
 		case SWT.F5: return OS.kMenuF5Glyph;
 		case SWT.F6: return OS.kMenuF6Glyph;
 		case SWT.F7: return OS.kMenuF7Glyph;
 		case SWT.F8: return OS.kMenuF8Glyph;
 		case SWT.F9: return OS.kMenuF9Glyph;
 		case SWT.F10: return OS.kMenuF10Glyph;
 		case SWT.F11: return OS.kMenuF11Glyph;
 		case SWT.F12: return OS.kMenuF12Glyph;
 	}
 	return OS.kMenuNullGlyph;
 }

 void releaseChild () {
 	super.releaseChild ();
 	if (menu != null) menu.dispose ();
 	menu = null;
 	parent.destroyItem (this);
 }

 void releaseWidget () {
 	if (menu != null) {
 		menu.releaseWidget ();
 		menu.destroyWidget ();
 	} else {
 		if ((parent.style & SWT.BAR) != 0) {
 //			short [] outIndex = new short [1];
 //			if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) == OS.noErr) {
 //				int [] outMenuRef = new int [1];
 //				OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef);
 //				if (outMenuRef [0] != 0) {
 //					OS.DeleteMenu (OS.GetMenuID (outMenuRef [0]));
 //					OS.DisposeMenu (outMenuRef [0]);
 //				}
 //			}
 		}
 	}
 	menu = null;
 	super.releaseWidget ();
 	accelerator = 0;
 	if (this == parent.defaultItem) parent.defaultItem = null;
 	Display display = getDisplay ();
 	display.removeMenuItem (this);
 	parent = null;
 }

 public void removeArmListener (ArmListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Arm, listener);
 }

 public void removeHelpListener (HelpListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Help, listener);
 }

 public void removeSelectionListener (SelectionListener listener) {
 	checkWidget ();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Selection, listener);
 	eventTable.unhook (SWT.DefaultSelection,listener);
 }

 void selectRadio () {
 	int index = 0;
 	MenuItem [] items = parent.getItems ();
 	while (index < items.length && items [index] != this) index++;
 	int i = index - 1;
 	while (i >= 0 && items [i].setRadioSelection (false)) --i;
 	int j = index + 1;
 	while (j < items.length && items [j].setRadioSelection (false)) j++;
 	setSelection (true);
 }

 public void setAccelerator (int accelerator) {
 	checkWidget ();
 	short [] outIndex = new short [1];
 	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) {
 		return;
 	}
 	boolean update = (this.accelerator == 0 && accelerator != 0) || (this.accelerator != 0 && accelerator == 0);
 	this.accelerator = accelerator;
 	boolean inSetVirtualKey = false;
 	int inModifiers = OS.kMenuNoModifiers, inGlyph = OS.kMenuNullGlyph, inKey = 0;
 	if (accelerator != 0) {
 		inKey = accelerator & SWT.KEY_MASK;
 		inGlyph = keyGlyph (inKey);
 		int virtualKey = Display.untranslateKey (inKey);
 		if (inKey == ' ') virtualKey = 49;
 		if (virtualKey != 0) {
 			inSetVirtualKey = true;
 			inKey = virtualKey;
 		} else {
 			inKey = Character.toUpperCase ((char)inKey);
 		}
 		inModifiers = (byte) OS.kMenuNoCommandModifier;
 		if ((accelerator & SWT.SHIFT) != 0) inModifiers |= OS.kMenuShiftModifier;
 		if ((accelerator & SWT.CONTROL) != 0) inModifiers |= OS.kMenuControlModifier;
 		if ((accelerator & SWT.COMMAND) != 0) inModifiers &= ~OS.kMenuNoCommandModifier;
 		if ((accelerator & SWT.ALT) != 0) inModifiers |= OS.kMenuOptionModifier;
 	}
 	OS.SetMenuItemModifiers (parent.handle, outIndex [0], (byte)inModifiers);
 	OS.SetMenuItemCommandKey (parent.handle, outIndex [0], inSetVirtualKey, (char)inKey);
 	OS.SetMenuItemKeyGlyph (parent.handle, outIndex [0], (short)inGlyph);
 	if (update) updateText ();
 }

 public void setEnabled (boolean enabled) {
 	checkWidget ();
 	if (enabled) {
 		state &= ~DISABLED;
 	} else {
 		state |= DISABLED;
 	}
 	_setEnabled (enabled);
 }

 public void setImage (Image image) {
 	checkWidget ();
 	if ((style & SWT.SEPARATOR) != 0) return;
 	super.setImage (image);
 	short [] outIndex = new short [1];
 	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) return;
 	int imageHandle = image != null ? image.handle : 0;
 	byte type = image != null ? (byte)OS.kMenuCGImageRefType : (byte)OS.kMenuNoIcon;
 	OS.SetMenuItemIconHandle (parent.handle, outIndex [0], type, imageHandle);
 }

 public void setMenu (Menu menu) {
 	checkWidget ();

 	/* Check to make sure the new menu is valid */
 	if ((style & SWT.CASCADE) == 0) {
 		error (SWT.ERROR_MENUITEM_NOT_CASCADE);
 	}
 	if (menu != null) {
 		if (menu.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
 		if ((menu.style & SWT.DROP_DOWN) == 0) {
 			error (SWT.ERROR_MENU_NOT_DROP_DOWN);
 		}
 		if (menu.parent != parent.parent) {
 			error (SWT.ERROR_INVALID_PARENT);
 		}
 	}

 	/* Assign the new menu */
 	Menu oldMenu = this.menu;
 	if (oldMenu == menu) return;
 	if (oldMenu != null) oldMenu.cascade = null;
 	this.menu = menu;

 	/* Update the menu in the OS */
 	short [] outIndex = new short [1];
 	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) {
 		error (SWT.ERROR_CANNOT_SET_MENU);
 	}
 	int outMenuRef [] = new int [1];
 	if (menu == null) {
 		if ((parent.style & SWT.BAR) != 0) {
 //			Display display = getDisplay ();
 //			short menuID = display.nextMenuId ();
 //			if (OS.CreateNewMenu (menuID, 0, outMenuRef) != OS.noErr) {
 //				error (SWT.ERROR_NO_HANDLES);
 //			}
 		}
 	} else {
 		menu.cascade = this;
 		if ((parent.style & SWT.BAR) != 0) {
 			if (oldMenu == null) {
 //				OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef);
 //				if (outMenuRef [0] != 0) {
 //					OS.DeleteMenu (OS.GetMenuID (outMenuRef [0]));
 //					OS.DisposeMenu (outMenuRef [0]);
 //				}
 			}
 		}
 		outMenuRef [0] = menu.handle;
 		int [] outString = new int [1];
 		if (OS.CopyMenuItemTextAsCFString (parent.handle, outIndex [0], outString) != OS.noErr) {
 			error (SWT.ERROR_CANNOT_SET_MENU);
 		}
 		OS.SetMenuTitleWithCFString (outMenuRef [0], outString [0]);
 		OS.CFRelease (outString [0]);
 	}
 	if (OS.SetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef [0]) != OS.noErr) {
 		error (SWT.ERROR_CANNOT_SET_MENU);
 	}
 }

 boolean setRadioSelection (boolean value) {
 	if ((style & SWT.RADIO) == 0) return false;
 	if (getSelection () != value) {
 		setSelection (value);
 		postEvent (SWT.Selection);
 	}
 	return true;
 }

 public void setSelection (boolean selected) {
 	checkWidget ();
 	if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return;
 	int inMark = selected ? ((style & SWT.RADIO) != 0) ? OS.diamondMark : OS.checkMark : 0;
 	if (OS.SetMenuCommandMark (parent.handle, id, (char) inMark) != OS.noErr) {
 		error (SWT.ERROR_CANNOT_SET_SELECTION);
 	}
 }

 public void setText (String string) {
 	checkWidget ();
 	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if ((style & SWT.SEPARATOR) != 0) return;
 	super.setText (string);
 	updateText ();
 }

 void updateText () {
 	if ((style & SWT.SEPARATOR) != 0) return;
 	short [] outIndex = new short [1];
 	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) {
 		error (SWT.ERROR_CANNOT_SET_TEXT);
 	}
 	char [] buffer = new char [text.length ()];
 	text.getChars (0, buffer.length, buffer, 0);
 	int i=0, j=0;
 	while (i < buffer.length) {
 		if (accelerator != 0 && buffer [i] == '\t') break;
 		if ((buffer [j++] = buffer [i++]) == Mnemonic) {
 			if (i == buffer.length) {continue;}
 			if (buffer [i] == Mnemonic) {i++; continue;}
 			j--;
 		}
 	}
 	int str = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, j);
 	if (str == 0) error (SWT.ERROR_CANNOT_SET_TEXT);
 	OS.SetMenuItemTextWithCFString (parent.handle, outIndex [0], str);
 	int [] outHierMenu = new int [1];
 	OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outHierMenu);
 	if (outHierMenu [0] != 0) OS.SetMenuTitleWithCFString (outHierMenu [0], str);
 	OS.CFRelease (str);
 }
 }
	package org.eclipse.swt.widgets;

	/*
	* Copyright (c) 2000, 2002 IBM Corp. All rights reserved.
	* This file is made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*/

	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.events.*;
	import org.eclipse.swt.internal.carbon.*;

	public class MenuItem extends Item {
	Menu parent, menu;
	int id, accelerator;

	public MenuItem (Menu parent, int style) {
	super (parent, checkStyle (style));
	this.parent = parent;
	parent.createItem (this, parent.getItemCount ());
	}

	public MenuItem (Menu parent, int style, int index) {
	super (parent, checkStyle (style));
	this.parent = parent;
	parent.createItem (this, index);
	}

	public void _setEnabled (boolean enabled) {
	short [] outIndex = new short [1];
	OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex);
	int outMenuRef [] = new int [1];
	OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef);
	if (enabled) {
	if (outMenuRef [0] != 0) OS.EnableMenuItem (outMenuRef [0], (short) 0);
	OS.EnableMenuCommand (parent.handle, id);
	} else {
	if (outMenuRef [0] != 0) OS.DisableMenuItem (outMenuRef [0], (short) 0);
	OS.DisableMenuCommand (parent.handle, id);
	}
	}

	public void addArmListener (ArmListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Arm, typedListener);
	}

	public void addHelpListener (HelpListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Help, typedListener);
	}

	public void addSelectionListener (SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener(listener);
	addListener (SWT.Selection,typedListener);
	addListener (SWT.DefaultSelection,typedListener);
	}

	protected void checkSubclass () {
	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
	}

	static int checkStyle (int style) {
	return checkBits (style, SWT.PUSH, SWT.CHECK, SWT.RADIO, SWT.SEPARATOR, SWT.CASCADE, 0);
	}

	public int getAccelerator () {
	checkWidget ();
	return accelerator;
	}

	public Display getDisplay () {
	Menu parent = this.parent;
	if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
	return parent.getDisplay ();
	}

	public boolean getEnabled () {
	checkWidget();
	return (state & DISABLED) == 0;
	}

	public Menu getMenu () {
	checkWidget ();
	return menu;
	}

	String getNameText () {
	if ((style & SWT.SEPARATOR) != 0) return "\|";
	return super.getNameText ();
	}

	public Menu getParent () {
	checkWidget ();
	return parent;
	}

	public boolean getSelection () {
	checkWidget ();
	if ((style & (SWT.CHECK \| SWT.RADIO)) == 0) return false;
	char [] outMark = new char [1];
	if (OS.GetMenuCommandMark (parent.handle, id, outMark) != OS.noErr) {
	error (SWT.ERROR_CANNOT_GET_SELECTION);
	}
	return outMark [0] != 0;
	}

	int kEventProcessCommand (int nextHandler, int theEvent, int userData) {
	//TEMPORARY CODE
	if (!isEnabled ()) return OS.noErr;

	if ((style & SWT.CHECK) != 0) {
	setSelection (!getSelection ());
	} else {
	if ((style & SWT.RADIO) != 0) {
	if ((parent.getStyle () & SWT.NO_RADIO_GROUP) != 0) {
	setSelection (!getSelection ());
	} else {
	selectRadio ();
	}
	}
	}
	int [] modifiers = new int [1];
	OS.GetEventParameter (theEvent, OS.kEventParamKeyModifiers, OS.typeUInt32, null, 4, null, modifiers);
	Event event = new Event ();
	setInputState (event, (short) 0, OS.GetCurrentEventButtonState (), modifiers [0]);
	postEvent (SWT.Selection, event);
	return OS.noErr;
	}

	public boolean isEnabled () {
	return getEnabled () && parent.isEnabled ();
	}

	int keyGlyph (int key) {
	switch (key) {
	case SWT.BS: return OS.kMenuDeleteLeftGlyph;
	case SWT.CR: return OS.kMenuReturnGlyph;
	case SWT.DEL: return OS.kMenuDeleteRightGlyph;
	case SWT.ESC: return OS.kMenuEscapeGlyph;
	case SWT.LF: return OS.kMenuReturnGlyph;
	case SWT.TAB: return OS.kMenuTabRightGlyph;
	case ' ': return OS.kMenuBlankGlyph;
	// case ' ': return OS.kMenuSpaceGlyph;
	case SWT.ALT: return OS.kMenuOptionGlyph;
	case SWT.SHIFT: return OS.kMenuShiftGlyph;
	case SWT.CONTROL: return OS.kMenuControlISOGlyph;
	case SWT.COMMAND: return OS.kMenuCommandGlyph;
	case SWT.ARROW_UP: return OS.kMenuUpArrowGlyph;
	case SWT.ARROW_DOWN: return OS.kMenuDownArrowGlyph;
	case SWT.ARROW_LEFT: return OS.kMenuLeftArrowGlyph;
	case SWT.ARROW_RIGHT: return OS.kMenuRightArrowGlyph;
	case SWT.PAGE_UP: return OS.kMenuPageUpGlyph;
	case SWT.PAGE_DOWN: return OS.kMenuPageDownGlyph;
	case SWT.F1: return OS.kMenuF1Glyph;
	case SWT.F2: return OS.kMenuF2Glyph;
	case SWT.F3: return OS.kMenuF3Glyph;
	case SWT.F4: return OS.kMenuF4Glyph;
	case SWT.F5: return OS.kMenuF5Glyph;
	case SWT.F6: return OS.kMenuF6Glyph;
	case SWT.F7: return OS.kMenuF7Glyph;
	case SWT.F8: return OS.kMenuF8Glyph;
	case SWT.F9: return OS.kMenuF9Glyph;
	case SWT.F10: return OS.kMenuF10Glyph;
	case SWT.F11: return OS.kMenuF11Glyph;
	case SWT.F12: return OS.kMenuF12Glyph;
	}
	return OS.kMenuNullGlyph;
	}

	void releaseChild () {
	super.releaseChild ();
	if (menu != null) menu.dispose ();
	menu = null;
	parent.destroyItem (this);
	}

	void releaseWidget () {
	if (menu != null) {
	menu.releaseWidget ();
	menu.destroyWidget ();
	} else {
	if ((parent.style & SWT.BAR) != 0) {
	// short [] outIndex = new short [1];
	// if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) == OS.noErr) {
	// int [] outMenuRef = new int [1];
	// OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef);
	// if (outMenuRef [0] != 0) {
	// OS.DeleteMenu (OS.GetMenuID (outMenuRef [0]));
	// OS.DisposeMenu (outMenuRef [0]);
	// }
	// }
	}
	}
	menu = null;
	super.releaseWidget ();
	accelerator = 0;
	if (this == parent.defaultItem) parent.defaultItem = null;
	Display display = getDisplay ();
	display.removeMenuItem (this);
	parent = null;
	}

	public void removeArmListener (ArmListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Arm, listener);
	}

	public void removeHelpListener (HelpListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Help, listener);
	}

	public void removeSelectionListener (SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection,listener);
	}

	void selectRadio () {
	int index = 0;
	MenuItem [] items = parent.getItems ();
	while (index < items.length && items [index] != this) index++;
	int i = index - 1;
	while (i >= 0 && items [i].setRadioSelection (false)) --i;
	int j = index + 1;
	while (j < items.length && items [j].setRadioSelection (false)) j++;
	setSelection (true);
	}

	public void setAccelerator (int accelerator) {
	checkWidget ();
	short [] outIndex = new short [1];
	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) {
	return;
	}
	boolean update = (this.accelerator == 0 && accelerator != 0) \|\| (this.accelerator != 0 && accelerator == 0);
	this.accelerator = accelerator;
	boolean inSetVirtualKey = false;
	int inModifiers = OS.kMenuNoModifiers, inGlyph = OS.kMenuNullGlyph, inKey = 0;
	if (accelerator != 0) {
	inKey = accelerator & SWT.KEY_MASK;
	inGlyph = keyGlyph (inKey);
	int virtualKey = Display.untranslateKey (inKey);
	if (inKey == ' ') virtualKey = 49;
	if (virtualKey != 0) {
	inSetVirtualKey = true;
	inKey = virtualKey;
	} else {
	inKey = Character.toUpperCase ((char)inKey);
	}
	inModifiers = (byte) OS.kMenuNoCommandModifier;
	if ((accelerator & SWT.SHIFT) != 0) inModifiers \|= OS.kMenuShiftModifier;
	if ((accelerator & SWT.CONTROL) != 0) inModifiers \|= OS.kMenuControlModifier;
	if ((accelerator & SWT.COMMAND) != 0) inModifiers &= ~OS.kMenuNoCommandModifier;
	if ((accelerator & SWT.ALT) != 0) inModifiers \|= OS.kMenuOptionModifier;
	}
	OS.SetMenuItemModifiers (parent.handle, outIndex [0], (byte)inModifiers);
	OS.SetMenuItemCommandKey (parent.handle, outIndex [0], inSetVirtualKey, (char)inKey);
	OS.SetMenuItemKeyGlyph (parent.handle, outIndex [0], (short)inGlyph);
	if (update) updateText ();
	}

	public void setEnabled (boolean enabled) {
	checkWidget ();
	if (enabled) {
	state &= ~DISABLED;
	} else {
	state \|= DISABLED;
	}
	_setEnabled (enabled);
	}

	public void setImage (Image image) {
	checkWidget ();
	if ((style & SWT.SEPARATOR) != 0) return;
	super.setImage (image);
	short [] outIndex = new short [1];
	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) return;
	int imageHandle = image != null ? image.handle : 0;
	byte type = image != null ? (byte)OS.kMenuCGImageRefType : (byte)OS.kMenuNoIcon;
	OS.SetMenuItemIconHandle (parent.handle, outIndex [0], type, imageHandle);
	}

	public void setMenu (Menu menu) {
	checkWidget ();

	/* Check to make sure the new menu is valid */
	if ((style & SWT.CASCADE) == 0) {
	error (SWT.ERROR_MENUITEM_NOT_CASCADE);
	}
	if (menu != null) {
	if (menu.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
	if ((menu.style & SWT.DROP_DOWN) == 0) {
	error (SWT.ERROR_MENU_NOT_DROP_DOWN);
	}
	if (menu.parent != parent.parent) {
	error (SWT.ERROR_INVALID_PARENT);
	}
	}

	/* Assign the new menu */
	Menu oldMenu = this.menu;
	if (oldMenu == menu) return;
	if (oldMenu != null) oldMenu.cascade = null;
	this.menu = menu;

	/* Update the menu in the OS */
	short [] outIndex = new short [1];
	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) {
	error (SWT.ERROR_CANNOT_SET_MENU);
	}
	int outMenuRef [] = new int [1];
	if (menu == null) {
	if ((parent.style & SWT.BAR) != 0) {
	// Display display = getDisplay ();
	// short menuID = display.nextMenuId ();
	// if (OS.CreateNewMenu (menuID, 0, outMenuRef) != OS.noErr) {
	// error (SWT.ERROR_NO_HANDLES);
	// }
	}
	} else {
	menu.cascade = this;
	if ((parent.style & SWT.BAR) != 0) {
	if (oldMenu == null) {
	// OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef);
	// if (outMenuRef [0] != 0) {
	// OS.DeleteMenu (OS.GetMenuID (outMenuRef [0]));
	// OS.DisposeMenu (outMenuRef [0]);
	// }
	}
	}
	outMenuRef [0] = menu.handle;
	int [] outString = new int [1];
	if (OS.CopyMenuItemTextAsCFString (parent.handle, outIndex [0], outString) != OS.noErr) {
	error (SWT.ERROR_CANNOT_SET_MENU);
	}
	OS.SetMenuTitleWithCFString (outMenuRef [0], outString [0]);
	OS.CFRelease (outString [0]);
	}
	if (OS.SetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outMenuRef [0]) != OS.noErr) {
	error (SWT.ERROR_CANNOT_SET_MENU);
	}
	}

	boolean setRadioSelection (boolean value) {
	if ((style & SWT.RADIO) == 0) return false;
	if (getSelection () != value) {
	setSelection (value);
	postEvent (SWT.Selection);
	}
	return true;
	}

	public void setSelection (boolean selected) {
	checkWidget ();
	if ((style & (SWT.CHECK \| SWT.RADIO)) == 0) return;
	int inMark = selected ? ((style & SWT.RADIO) != 0) ? OS.diamondMark : OS.checkMark : 0;
	if (OS.SetMenuCommandMark (parent.handle, id, (char) inMark) != OS.noErr) {
	error (SWT.ERROR_CANNOT_SET_SELECTION);
	}
	}

	public void setText (String string) {
	checkWidget ();
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	if ((style & SWT.SEPARATOR) != 0) return;
	super.setText (string);
	updateText ();
	}

	void updateText () {
	if ((style & SWT.SEPARATOR) != 0) return;
	short [] outIndex = new short [1];
	if (OS.GetIndMenuItemWithCommandID (parent.handle, id, 1, null, outIndex) != OS.noErr) {
	error (SWT.ERROR_CANNOT_SET_TEXT);
	}
	char [] buffer = new char [text.length ()];
	text.getChars (0, buffer.length, buffer, 0);
	int i=0, j=0;
	while (i < buffer.length) {
	if (accelerator != 0 && buffer [i] == '\t') break;
	if ((buffer [j++] = buffer [i++]) == Mnemonic) {
	if (i == buffer.length) {continue;}
	if (buffer [i] == Mnemonic) {i++; continue;}
	j--;
	}
	}
	int str = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, j);
	if (str == 0) error (SWT.ERROR_CANNOT_SET_TEXT);
	OS.SetMenuItemTextWithCFString (parent.handle, outIndex [0], str);
	int [] outHierMenu = new int [1];
	OS.GetMenuItemHierarchicalMenu (parent.handle, outIndex [0], outHierMenu);
	if (outHierMenu [0] != 0) OS.SetMenuTitleWithCFString (outHierMenu [0], str);
	OS.CFRelease (str);
	}
	}