| /******************************************************************************* |
| * Copyright (c) 2000, 2012 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.cocoa.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * Instances of this class represent a selectable user interface object |
| * that issues notification when pressed and released. |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>CHECK, CASCADE, PUSH, RADIO, SEPARATOR</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>Arm, Help, Selection</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles CHECK, CASCADE, PUSH, RADIO and SEPARATOR |
| * may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class MenuItem extends Item { |
| NSMenuItem nsItem; |
| Menu parent, menu; |
| int accelerator; |
| long /*int*/ nsItemAction; |
| id nsItemTarget; |
| String toolTipText; |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Menu</code>) and a style value |
| * describing its behavior and appearance. The item is added |
| * to the end of the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a menu control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#CHECK |
| * @see SWT#CASCADE |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#SEPARATOR |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public MenuItem (Menu parent, int style) { |
| super (parent, checkStyle (style)); |
| this.parent = parent; |
| parent.createItem (this, parent.getItemCount ()); |
| } |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>Menu</code>), a style value |
| * describing its behavior and appearance, and the index |
| * at which to place it in the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a menu control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * @param index the zero-relative index to store the receiver in its parent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li> |
| * </ul> |
| * |
| * @see SWT#CHECK |
| * @see SWT#CASCADE |
| * @see SWT#PUSH |
| * @see SWT#RADIO |
| * @see SWT#SEPARATOR |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public MenuItem (Menu parent, int style, int index) { |
| super (parent, checkStyle (style)); |
| this.parent = parent; |
| parent.createItem (this, index); |
| } |
| |
| MenuItem (Menu parent, NSMenuItem nsMenuItem) { |
| super(parent, 0); |
| this.parent = parent; |
| this.nsItem = nsMenuItem; |
| parent.createItem(this, parent.getItemCount ()); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the arm events are generated for the control, by sending |
| * it one of the messages defined in the <code>ArmListener</code> |
| * interface. |
| * |
| * @param listener the listener which should be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see ArmListener |
| * @see #removeArmListener |
| */ |
| public void addArmListener (ArmListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Arm, typedListener); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the help events are generated for the control, by sending |
| * it one of the messages defined in the <code>HelpListener</code> |
| * interface. |
| * |
| * @param listener the listener which should be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see HelpListener |
| * @see #removeHelpListener |
| */ |
| public void addHelpListener (HelpListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Help, typedListener); |
| } |
| |
| /** |
| * Adds the listener to the collection of listeners who will |
| * be notified when the menu item is selected by the user, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * When <code>widgetSelected</code> is called, the stateMask field of the event object is valid. |
| * <code>widgetDefaultSelected</code> is not called. |
| * </p> |
| * <p> |
| * When the <code>SWT.RADIO</code> style bit is set, the <code>widgetSelected</code> method is |
| * also called when the receiver loses selection because another item in the same radio group |
| * was selected by the user. During <code>widgetSelected</code> the application can use |
| * <code>getSelection()</code> to determine the current selected state of the receiver. |
| * </p> |
| * |
| * @param listener the listener which should be notified when the menu item is selected by the user |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #removeSelectionListener |
| * @see SelectionEvent |
| */ |
| 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); |
| } |
| |
| @Override |
| 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); |
| } |
| |
| NSMenu createEmptyMenu () { |
| if ((parent.style & SWT.BAR) != 0) { |
| return (NSMenu) new SWTMenu ().alloc ().init (); |
| } |
| return null; |
| } |
| |
| @Override |
| void deregister () { |
| super.deregister (); |
| display.removeWidget (nsItem); |
| } |
| |
| @Override |
| void destroyWidget () { |
| parent.destroyItem (this); |
| releaseHandle (); |
| } |
| |
| /** |
| * Returns the widget accelerator. An accelerator is the bit-wise |
| * OR of zero or more modifier masks and a key. Examples: |
| * <code>SWT.CONTROL | SWT.SHIFT | 'T', SWT.ALT | SWT.F2</code>. |
| * The default value is zero, indicating that the menu item does |
| * not have an accelerator. |
| * |
| * @return the accelerator or 0 |
| * |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public int getAccelerator () { |
| checkWidget (); |
| return accelerator; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is enabled, and |
| * <code>false</code> otherwise. A disabled menu item is typically |
| * not selectable from the user interface and draws with an |
| * inactive or "grayed" look. |
| * |
| * @return the receiver's enabled state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #isEnabled |
| */ |
| public boolean getEnabled () { |
| checkWidget(); |
| return (state & DISABLED) == 0; |
| } |
| |
| /** |
| * Gets the identifier associated with the receiver. |
| * |
| * @return the receiver's identifier |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.7 |
| */ |
| public int getID () { |
| checkWidget(); |
| return (int)nsItem.tag(); |
| } |
| |
| /** |
| * Returns the receiver's cascade menu if it has one or null |
| * if it does not. Only <code>CASCADE</code> menu items can have |
| * a pull down menu. The sequence of key strokes, button presses |
| * and/or button releases that are used to request a pull down |
| * menu is platform specific. |
| * |
| * @return the receiver's menu |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Menu getMenu () { |
| checkWidget (); |
| return menu; |
| } |
| |
| @Override |
| String getNameText () { |
| if ((style & SWT.SEPARATOR) != 0) return "|"; |
| return super.getNameText (); |
| } |
| |
| /** |
| * Returns the receiver's parent, which must be a <code>Menu</code>. |
| * |
| * @return the receiver's parent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Menu getParent () { |
| checkWidget (); |
| return parent; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is selected, |
| * and false otherwise. |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. |
| * |
| * @return the selection state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public boolean getSelection () { |
| checkWidget (); |
| if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return false; |
| return nsItem.state() == OS.NSOnState; |
| } |
| |
| /** |
| * Returns the receiver's tool tip text, or null if it has not been set. |
| * |
| * @return the receiver's tool tip text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.104 |
| */ |
| public String getToolTipText () { |
| checkWidget(); |
| return toolTipText; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver is enabled and all |
| * of the receiver's ancestors are enabled, and <code>false</code> |
| * otherwise. A disabled menu item is typically not selectable from the |
| * user interface and draws with an inactive or "grayed" look. |
| * |
| * @return the receiver's enabled state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #getEnabled |
| */ |
| public boolean isEnabled () { |
| return getEnabled () && parent.isEnabled (); |
| } |
| |
| int keyChar (int key) { |
| //TODO - use the NS key constants |
| switch (key) { |
| case SWT.BS: return OS.NSBackspaceCharacter; |
| case SWT.CR: return OS.NSCarriageReturnCharacter; |
| case SWT.DEL: return OS.NSDeleteCharacter; |
| case SWT.ESC: return SWT.ESC; |
| case SWT.LF: return OS.NSNewlineCharacter; |
| case SWT.TAB: return OS.NSTabCharacter; |
| // case ' ': return OS.kMenuBlankGlyph; |
| // case ' ': return OS.kMenuSpaceGlyph; |
| case SWT.ALT: return 0x2325; |
| case SWT.SHIFT: return 0x21E7; |
| case SWT.CONTROL: return 0xF2303; |
| case SWT.COMMAND: return 0x2318; |
| case SWT.ARROW_UP: return 0x2191; |
| case SWT.ARROW_DOWN: return 0x2193; |
| case SWT.ARROW_LEFT: return 0x2190; |
| case SWT.ARROW_RIGHT: return 0x2192; |
| case SWT.PAGE_UP: return 0x21DE; |
| case SWT.PAGE_DOWN: return 0x21DF; |
| case SWT.KEYPAD_CR: return OS.NSEnterCharacter; |
| case SWT.HELP: return OS.NSHelpFunctionKey; |
| case SWT.HOME: return 0xF729; |
| case SWT.END: return 0xF72B; |
| // case SWT.CAPS_LOCK: return ??; |
| case SWT.F1: return 0xF704; |
| case SWT.F2: return 0xF705; |
| case SWT.F3: return 0xF706; |
| case SWT.F4: return 0xF707; |
| case SWT.F5: return 0xF708; |
| case SWT.F6: return 0xF709; |
| case SWT.F7: return 0xF70A; |
| case SWT.F8: return 0xF70B; |
| case SWT.F9: return 0xF70C; |
| case SWT.F10: return 0xF70D; |
| case SWT.F11: return 0xF70E; |
| case SWT.F12: return 0xF70F; |
| case SWT.F13: return 0xF710; |
| case SWT.F14: return 0xF711; |
| case SWT.F15: return 0xF712; |
| /* |
| * The following lines are intentionally commented. |
| */ |
| // case SWT.INSERT: return ??; |
| } |
| return 0; |
| } |
| |
| |
| @Override |
| void register () { |
| super.register (); |
| display.addWidget (nsItem, this); |
| } |
| |
| @Override |
| void releaseHandle () { |
| super.releaseHandle (); |
| if (nsItem != null) nsItem.release(); |
| nsItem = null; |
| parent = null; |
| } |
| |
| @Override |
| void releaseChildren (boolean destroy) { |
| if (menu != null) { |
| menu.release (false); |
| menu = null; |
| } |
| super.releaseChildren (destroy); |
| } |
| |
| @Override |
| void releaseWidget () { |
| super.releaseWidget (); |
| accelerator = 0; |
| if (this == parent.defaultItem) parent.defaultItem = null; |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the arm events are generated for the control. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see ArmListener |
| * @see #addArmListener |
| */ |
| public void removeArmListener (ArmListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Arm, listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the help events are generated for the control. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see HelpListener |
| * @see #addHelpListener |
| */ |
| public void removeHelpListener (HelpListener listener) { |
| checkWidget (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Help, listener); |
| } |
| |
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notified when the control is selected by the user. |
| * |
| * @param listener the listener which should no longer be notified |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see SelectionListener |
| * @see #addSelectionListener |
| */ |
| 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); |
| } |
| |
| @Override |
| void reskinChildren (int flags) { |
| if (menu != null) { |
| menu.reskin (flags); |
| } |
| super.reskinChildren (flags); |
| } |
| |
| 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); |
| } |
| |
| @Override |
| void sendSelection () { |
| 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 (); |
| } |
| } |
| } |
| |
| Event event = new Event (); |
| sendSelectionEvent (SWT.Selection, event, nsItemAction != 0); |
| // Widget may be disposed at this point |
| if (isDisposed()) return; |
| if (nsItemAction != 0) { |
| if (event.doit) { |
| NSApplication app = NSApplication.sharedApplication(); |
| app.sendAction(nsItemAction, nsItemTarget, app); |
| } |
| } |
| } |
| |
| /** |
| * Sets the widget accelerator. An accelerator is the bit-wise |
| * OR of zero or more modifier masks and a key. Examples: |
| * <code>SWT.MOD1 | SWT.MOD2 | 'T', SWT.MOD3 | SWT.F2</code>. |
| * <code>SWT.CONTROL | SWT.SHIFT | 'T', SWT.ALT | SWT.F2</code>. |
| * The default value is zero, indicating that the menu item does |
| * not have an accelerator. |
| * |
| * @param accelerator an integer that is the bit-wise OR of masks and a key |
| * |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setAccelerator (int accelerator) { |
| checkWidget (); |
| if (this.accelerator == accelerator) return; |
| this.accelerator = accelerator; |
| int key = accelerator & SWT.KEY_MASK; |
| if (key == SWT.ESC && /* no masks */key == accelerator && !display.escAsAcceleratorPresent) { |
| display.escAsAcceleratorPresent = true; |
| } |
| int virtualKey = keyChar (key); |
| String string = virtualKey != 0 ? (char)virtualKey + "" : (char)key + ""; |
| NSString nsstring = (NSString) new NSString().alloc(); |
| nsstring = nsstring.initWithString(string); |
| nsItem.setKeyEquivalent (nsstring.lowercaseString()); |
| nsstring.release(); |
| int mask = 0; |
| if ((accelerator & SWT.SHIFT) != 0) mask |= OS.NSShiftKeyMask; |
| if ((accelerator & SWT.CONTROL) != 0) mask |= OS.NSControlKeyMask; |
| if ((accelerator & SWT.COMMAND) != 0) mask |= OS.NSCommandKeyMask; |
| if ((accelerator & SWT.ALT) != 0) mask |= OS.NSAlternateKeyMask; |
| nsItem.setKeyEquivalentModifierMask (mask); |
| } |
| |
| /** |
| * Enables the receiver if the argument is <code>true</code>, |
| * and disables it otherwise. A disabled menu item is typically |
| * not selectable from the user interface and draws with an |
| * inactive or "grayed" look. |
| * |
| * @param enabled the new enabled state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setEnabled (boolean enabled) { |
| checkWidget (); |
| if (enabled) { |
| state &= ~DISABLED; |
| } else { |
| state |= DISABLED; |
| } |
| nsItem.setEnabled(enabled); |
| } |
| |
| /** |
| * Sets the identifier associated with the receiver to the argument. |
| * |
| * @param id the new identifier. This must be a non-negative value. System-defined identifiers are negative values. |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * <li>ERROR_INVALID_ARGUMENT - if called with an negative-valued argument.</li> |
| * </ul> |
| * |
| * @since 3.7 |
| */ |
| public void setID (int id) { |
| checkWidget(); |
| if (id < 0) error(SWT.ERROR_INVALID_ARGUMENT); |
| nsItem.setTag(id); |
| } |
| |
| /** |
| * Sets the receiver's image to the argument, which may be |
| * null indicating that no image should be displayed. |
| * <p> |
| * Note: This operation is a <em>HINT</em> and is not supported on |
| * platforms that do not have this concept (for example, Windows NT). |
| * Furthermore, some platforms (such as GTK2), cannot display both |
| * a check box and an image at the same time. Instead, they hide |
| * the image and display the check box. Some platforms (such as GTK3) |
| * support images alongside check boxes. |
| * </p> |
| * |
| * @param image the image to display on the receiver (may be null) |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| @Override |
| public void setImage (Image image) { |
| checkWidget (); |
| if ((style & SWT.SEPARATOR) != 0) return; |
| super.setImage (image); |
| nsItem.setImage(image != null? image.handle : null); |
| } |
| |
| /** |
| * Sets the receiver's pull down menu to the argument. |
| * Only <code>CASCADE</code> menu items can have a |
| * pull down menu. The sequence of key strokes, button presses |
| * and/or button releases that are used to request a pull down |
| * menu is platform specific. |
| * <p> |
| * Note: Disposing of a menu item that has a pull down menu |
| * will dispose of the menu. To avoid this behavior, set the |
| * menu to null before the menu item is disposed. |
| * </p> |
| * |
| * @param menu the new pull down menu |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_MENU_NOT_DROP_DOWN - if the menu is not a drop down menu</li> |
| * <li>ERROR_MENUITEM_NOT_CASCADE - if the menu item is not a <code>CASCADE</code></li> |
| * <li>ERROR_INVALID_ARGUMENT - if the menu has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if the menu is not in the same widget tree</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| 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() || (menu == parent)) error(SWT.ERROR_INVALID_ARGUMENT); |
| if ((menu.style & SWT.DROP_DOWN) == 0) { |
| error (SWT.ERROR_MENU_NOT_DROP_DOWN); |
| } |
| if (parent.parent != null && 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 */ |
| if (menu == null) { |
| NSMenu emptyMenu = createEmptyMenu (); |
| if (emptyMenu != null) { |
| nsItem.setSubmenu (emptyMenu); |
| emptyMenu.release(); |
| } |
| } else { |
| menu.cascade = this; |
| nsItem.setSubmenu (menu.nsMenu); |
| } |
| |
| if (menu != null) { |
| nsItem.setTarget(null); |
| nsItem.setAction(0); |
| } else { |
| nsItem.setTarget(nsItem); |
| nsItem.setAction(OS.sel_sendSelection); |
| } |
| |
| /* Update menu title with parent item title */ |
| updateText (); |
| } |
| |
| boolean setRadioSelection (boolean value) { |
| if ((style & SWT.RADIO) == 0) return false; |
| if (getSelection () != value) { |
| setSelection (value); |
| sendSelectionEvent (SWT.Selection); |
| } |
| return true; |
| } |
| |
| /** |
| * Sets the selection state of the receiver. |
| * <p> |
| * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>, |
| * it is selected when it is checked. |
| * |
| * @param selected the new selection state |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setSelection (boolean selected) { |
| checkWidget (); |
| if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return; |
| nsItem.setState(selected ? OS.NSOnState : OS.NSOffState); |
| } |
| |
| /** |
| * Sets the receiver's text. The string may include |
| * the mnemonic character and accelerator text. |
| * <p> |
| * Mnemonics are indicated by an '&' that causes the next |
| * character to be the mnemonic. When the user presses a |
| * key sequence that matches the mnemonic, a selection |
| * event occurs. On most platforms, the mnemonic appears |
| * underlined but may be emphasised in a platform specific |
| * manner. The mnemonic indicator character '&' can be |
| * escaped by doubling it in the string, causing a single |
| * '&' to be displayed. |
| * </p> |
| * <p> |
| * Accelerator text is indicated by the '\t' character. |
| * On platforms that support accelerator text, the text |
| * that follows the '\t' character is displayed to the user, |
| * typically indicating the key stroke that will cause |
| * the item to become selected. On most platforms, the |
| * accelerator text appears right aligned in the menu. |
| * Setting the accelerator text does not install the |
| * accelerator key sequence. The accelerator key sequence |
| * is installed using #setAccelerator. |
| * </p> |
| * |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the text is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see #setAccelerator |
| */ |
| @Override |
| public void setText (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.SEPARATOR) != 0) return; |
| if (text.equals (string)) return; |
| super.setText (string); |
| updateText (); |
| } |
| |
| /** |
| * Sets the receiver's tool tip text to the argument, which |
| * may be null indicating that the default tool tip for the |
| * control will be shown. For a menu item that has a default |
| * tool tip, setting |
| * the tool tip text to an empty string replaces the default, |
| * causing no tool tip text to be shown. |
| * <p> |
| * The mnemonic indicator (character '&') is not displayed in a tool tip. |
| * To display a single '&' in the tool tip, the character '&' can be |
| * escaped by doubling it in the string. |
| * </p> |
| * <p> |
| * NOTE: Tooltips are currently not shown for top-level menu items in the |
| * {@link Shell#setMenuBar(Menu) shell menubar} on Windows, Mac, and Ubuntu Unity desktop. |
| * </p> |
| * <p> |
| * NOTE: This operation is a hint and behavior is platform specific, on Windows |
| * for CJK-style mnemonics of the form " (&C)" at the end of the tooltip text |
| * are not shown in tooltip. |
| * </p> |
| * @param toolTip the new tool tip text (or null) |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.104 |
| */ |
| public void setToolTipText (String toolTip) { |
| checkWidget(); |
| |
| if (toolTip == null && toolTipText != null) { |
| toolTipText = null; |
| nsItem.setToolTip (null); |
| } |
| if (toolTip == null || toolTip.trim().length() == 0 || toolTip.equals(toolTipText)) return; |
| |
| toolTipText = toolTip; |
| |
| char[] chars = new char [toolTipText.length ()]; |
| toolTipText.getChars (0, chars.length, chars, 0); |
| int length = fixMnemonic (chars); |
| nsItem.setToolTip (NSString.stringWithCharacters (chars, length)); |
| } |
| |
| void updateText () { |
| if (isDisposed() || parent.isDisposed()) return; |
| char [] buffer = new char [text.length ()]; |
| text.getChars (0, buffer.length, buffer, 0); |
| int i=0, j=0; |
| while (i < buffer.length) { |
| if (buffer [i] == '\t') break; |
| if ((buffer [j++] = buffer [i++]) == '&') { |
| if (i == buffer.length) {continue;} |
| if (buffer [i] == '&') {i++; continue;} |
| j--; |
| } |
| } |
| String text = new String (buffer, 0, j); |
| NSMenu submenu = nsItem.submenu (); |
| NSString label = (NSString) new NSString().alloc(); |
| label = label.initWithString(text); |
| if(submenu != null && (parent.getStyle () & SWT.BAR) != 0) { |
| submenu.setTitle (label); |
| } else { |
| int direction = (parent.getStyle () & SWT.RIGHT_TO_LEFT) != 0 ? OS.NSWritingDirectionRightToLeft : OS.NSWritingDirectionLeftToRight; |
| NSMutableDictionary dict = ((NSMutableDictionary)new NSMutableDictionary().alloc()).initWithCapacity(2); |
| NSMutableParagraphStyle paragraphStyle = (NSMutableParagraphStyle)new NSMutableParagraphStyle ().alloc ().init (); |
| paragraphStyle.setBaseWritingDirection(direction); |
| paragraphStyle.setLineBreakMode(OS.NSLineBreakByTruncatingMiddle); |
| dict.setObject (paragraphStyle, OS.NSParagraphStyleAttributeName); |
| paragraphStyle.release (); |
| dict.setObject (NSFont.menuBarFontOfSize(0), OS.NSFontAttributeName); |
| NSAttributedString attribStr = ((NSAttributedString) new NSAttributedString ().alloc ()).initWithString (label, dict); |
| dict.release(); |
| nsItem.setAttributedTitle(attribStr); |
| /* |
| * Feature in Cocoa. Setting the attributed title on an NSMenuItem |
| * also sets the title, but clearing the attributed title does not |
| * clear the title. The fix is to explicitly set the title to an |
| * empty string in this case. |
| */ |
| if (text.length() == 0) nsItem.setTitle(NSString.string()); |
| attribStr.release(); |
| } |
| label.release(); |
| } |
| |
| boolean updateAccelerator (boolean show) { |
| if (accelerator != 0) return false; |
| int mask = 0, key = 0; |
| if (show) { |
| char [] buffer = new char [text.length ()]; |
| text.getChars (0, buffer.length, buffer, 0); |
| int i=0, j=0; |
| while (i < buffer.length) { |
| if (buffer [i] == '\t') break; |
| if ((buffer [j++] = buffer [i++]) == '&') { |
| if (i == buffer.length) {continue;} |
| if (buffer [i] == '&') {i++; continue;} |
| j--; |
| } |
| } |
| if (i < buffer.length && buffer [i] == '\t') { |
| for (j = i + 1; j < buffer.length; j++) { |
| switch (buffer [j]) { |
| case '\u2303': mask |= OS.NSControlKeyMask; i++; break; |
| case '\u2325': mask |= OS.NSAlternateKeyMask; i++; break; |
| case '\u21E7': mask |= OS.NSShiftKeyMask; i++; break; |
| case '\u2318': mask |= OS.NSCommandKeyMask; i++; break; |
| default: |
| j = buffer.length; |
| break; |
| } |
| } |
| switch (buffer.length - i - 1) { |
| case 1: |
| key = buffer [i + 1]; |
| if (key == 0x2423) key = ' '; |
| break; |
| case 2: |
| if (buffer [i + 1] == 'F') { |
| switch (buffer [i + 2]) { |
| case '1': key = 0xF704; break; |
| case '2': key = 0xF705; break; |
| case '3': key = 0xF706; break; |
| case '4': key = 0xF707; break; |
| case '5': key = 0xF708; break; |
| case '6': key = 0xF709; break; |
| case '7': key = 0xF70A; break; |
| case '8': key = 0xF70B; break; |
| case '9': key = 0xF70C; break; |
| } |
| } |
| break; |
| case 3: |
| if (buffer [i + 1] == 'F' && buffer [i + 2] == '1') { |
| switch (buffer [i + 3]) { |
| case '0': key = 0xF70D; break; |
| case '1': key = 0xF70E; break; |
| case '2': key = 0xF70F; break; |
| case '3': key = 0xF710; break; |
| case '4': key = 0xF711; break; |
| case '5': key = 0xF712; break; |
| } |
| } |
| break; |
| } |
| } |
| } |
| nsItem.setKeyEquivalentModifierMask (mask); |
| NSString nsstring = (NSString) new NSString().alloc(); |
| nsstring = nsstring.initWithString(key == 0 ? "" : String.valueOf ((char)key)); |
| nsItem.setKeyEquivalent (nsstring.lowercaseString ()); |
| nsstring.release(); |
| return key != 0; |
| } |
| |
| } |
| |