| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * (c) Copyright IBM Corp. 2000, 2001.
|
| * All Rights Reserved
|
| */
|
|
|
| import org.eclipse.swt.*;
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.gtk.*;
|
| 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> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */
|
|
|
| public class MenuItem extends Item {
|
| Menu parent, menu;
|
| int accelerator;
|
|
|
| /** |
| * 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 |
| * for all SWT widget classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * |
| * @param parent a composite 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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */
|
| public MenuItem (Menu parent, int style) {
|
| super (parent, checkStyle (style));
|
| this.parent = parent;
|
| createWidget (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 |
| * for all SWT widget classes should include a comment which |
| * describes the style constants which are applicable to the class. |
| * </p> |
| * |
| * @param parent a composite control which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * @param index the index to store the receiver in its parent |
| * |
| * @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 |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */
|
| public MenuItem (Menu parent, int style, int index) {
|
| super (parent, checkStyle (style));
|
| this.parent = parent;
|
| int count = parent.getItemCount ();
|
| if (!(0 <= index && index <= count)) {
|
| error (SWT.ERROR_ITEM_NOT_ADDED);
|
| }
|
| createWidget (index);
|
| }
|
| void addAccelerator (int accel_group) {
|
| if (accel_group == 0) return;
|
| if (accelerator == 0) return;
|
| byte [] activate = Converter.wcsToMbcs (null, "activate", true);
|
| int mask = 0;
|
| if ((accelerator & SWT.CONTROL) != 0) mask |= OS.GDK_CONTROL_MASK;
|
| if ((accelerator & SWT.ALT) != 0) mask |= OS.GDK_MOD1_MASK;
|
| if ((accelerator & SWT.SHIFT) != 0) mask |= OS.GDK_SHIFT_MASK;
|
| int keysym = accelerator & ~(SWT.ALT | SWT.SHIFT | SWT.CTRL);
|
| int newKey = Display.untranslateKey (keysym);
|
| if (newKey != 0) {
|
| keysym = newKey;
|
| } else {
|
| keysym = wcsToMbcs ((char) keysym);
|
| }
|
| OS.gtk_widget_add_accelerator (handle, activate, accel_group, keysym, mask, OS.GTK_ACCEL_VISIBLE);
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| 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 control is selected, 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>
|
| *
|
| * @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 SelectionListener
|
| * @see #removeSelectionListener
|
| * @see SelectionEvent
|
| */
|
| public void addSelectionListener (SelectionListener listener) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| TypedListener typedListener = new TypedListener(listener);
|
| addListener (SWT.Selection,typedListener);
|
| addListener (SWT.DefaultSelection,typedListener);
|
| }
|
| static int checkStyle (int style) {
|
| return checkBits (style, SWT.PUSH, SWT.CHECK, SWT.RADIO, SWT.SEPARATOR, SWT.CASCADE, 0);
|
| }
|
| void createHandle (int index) {
|
| state |= HANDLE;
|
| byte [] buffer = new byte [1];
|
| int bits = SWT.CHECK | SWT.RADIO | SWT.PUSH | SWT.SEPARATOR;
|
| switch (style & bits) {
|
| case SWT.SEPARATOR:
|
| handle = OS.gtk_menu_item_new ();
|
| break;
|
| case SWT.RADIO:
|
| // handle = OS.gtk_radio_menu_item_new_with_label (0, buffer);
|
| // break;
|
| case SWT.CHECK:
|
| handle = OS.gtk_check_menu_item_new_with_label (buffer);
|
| break;
|
| case SWT.PUSH:
|
| default:
|
| handle = OS.gtk_menu_item_new_with_label (buffer);
|
| break;
|
| }
|
| if (handle == 0) error (SWT.ERROR_NO_HANDLES);
|
| if ((style & (SWT.CHECK | SWT.RADIO)) != 0) {
|
| OS.gtk_check_menu_item_set_show_toggle (handle, true);
|
| }
|
| if ((parent.style & SWT.BAR) != 0) {
|
| OS.gtk_menu_bar_insert (parent.handle, handle, index);
|
| } else {
|
| OS.gtk_menu_insert (parent.handle, handle, index);
|
| }
|
| OS.gtk_widget_show (handle);
|
| }
|
| /** |
| * Return 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>. |
| * |
| * @return the accelerator |
| * |
| * </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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return accelerator;
|
| }
|
| public Display getDisplay () {
|
| Menu parent = this.parent;
|
| if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return parent.getDisplay ();
|
| }
|
| /** |
| * Returns <code>true</code> if the receiver is enabled, and |
| * <code>false</code> otherwise. A disabled control 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> |
| */
|
| public boolean getEnabled () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| GtkWidget widget = new GtkWidget ();
|
| OS.memmove (widget, handle, GtkWidget.sizeof);
|
| return (widget.flags & OS.GTK_SENSITIVE) != 0;
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| return menu;
|
| }
|
| /** |
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return false;
|
| GtkCheckMenuItem menuItem = new GtkCheckMenuItem ();
|
| OS.memmove (menuItem, handle, GtkCheckMenuItem.sizeof);
|
| return menuItem.active != 0;
|
| }
|
| void hookEvents () {
|
| super.hookEvents ();
|
| Display display = getDisplay ();
|
| int windowProc2 = display.windowProc2;
|
| byte [] activate_event = Converter.wcsToMbcs (null, "activate", true);
|
| OS.gtk_signal_connect (handle, activate_event, windowProc2, SWT.Selection);
|
| }
|
| /** |
| * Returns <code>true</code> if the receiver is enabled, and |
| * <code>false</code> otherwise. A disabled control 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> |
| */
|
| public boolean isEnabled () {
|
| return getEnabled ();
|
| }
|
| int processSelection (int int0, int int1, int int2) {
|
| postEvent (SWT.Selection);
|
| return 0;
|
| }
|
| void releaseChild () {
|
| super.releaseChild ();
|
| if (menu != null) menu.dispose ();
|
| menu = null;
|
| }
|
| void releaseWidget () {
|
| if (menu != null) {
|
| menu.releaseWidget ();
|
| menu.releaseHandle ();
|
| }
|
| menu = null;
|
| super.releaseWidget ();
|
| int accel_group = parent.getShell ().accelGroup;
|
| removeAccelerator (accel_group);
|
| accelerator = 0;
|
| parent = null;
|
| }
|
| void removeAccelerator (int accel_group) {
|
| if (accel_group == 0) return;
|
| if (accelerator == 0) return;
|
| int mask = 0;
|
| if ((accelerator & SWT.CONTROL) != 0) mask |= OS.GDK_CONTROL_MASK;
|
| if ((accelerator & SWT.ALT) != 0) mask |= OS.GDK_MOD1_MASK;
|
| if ((accelerator & SWT.SHIFT) != 0) mask |= OS.GDK_SHIFT_MASK;
|
| int keysym = accelerator & ~(SWT.ALT | SWT.SHIFT | SWT.CTRL);
|
| int newKey = Display.untranslateKey (keysym);
|
| if (newKey != 0) {
|
| keysym = newKey;
|
| } else {
|
| keysym = wcsToMbcs ((char) keysym);
|
| }
|
| OS.gtk_widget_remove_accelerator (handle, accel_group, keysym, mask);
|
| accelerator = 0;
|
| }
|
| /** |
| * 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 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| 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 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| 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. |
| * |
| * @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 SelectionListener |
| * @see #addSelectionListener |
| */
|
| public void removeSelectionListener (SelectionListener listener) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook (SWT.Selection, listener);
|
| eventTable.unhook (SWT.DefaultSelection,listener);
|
| }
|
| /** |
| * Sets 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>. |
| * |
| * @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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| int accel_group = parent.getShell ().accelGroup;
|
| if (accelerator != 0) removeAccelerator (accel_group);
|
| this.accelerator = accelerator;
|
| if (accelerator != 0) addAccelerator (accel_group);
|
| }
|
| /** |
| * Enables the receiver if the argument is <code>true</code>, |
| * and disables it otherwise. A disabled control 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| OS.gtk_widget_set_sensitive (handle, enabled);
|
| }
|
|
|
|
|
|
|
| /** |
| * 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. |
| * |
| * @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.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;
|
| /*
|
| * Add a reference to the menu we are about
|
| * to replace or GTK will destroy it.
|
| */
|
| OS.gtk_object_ref (oldMenu.handle);
|
| OS.gtk_menu_item_remove_submenu (handle);
|
| }
|
| if ((this.menu = menu) != null) {
|
| menu.cascade = this;
|
| OS.gtk_menu_item_set_submenu (handle, menu.handle);
|
| }
|
|
|
|
|
| }
|
| /** |
| * 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) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if ((style & (SWT.CHECK | SWT.RADIO)) == 0) return;
|
| OS.gtk_signal_handler_block_by_data (handle, SWT.Selection);
|
| OS.gtk_check_menu_item_set_active (handle, selected);
|
| OS.gtk_signal_handler_unblock_by_data (handle, SWT.Selection);
|
| }
|
| public void setText (String string) {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if ((style & SWT.SEPARATOR) != 0) return;
|
| text = string;
|
| if ((style & SWT.ARROW) != 0) return;
|
| int length = string.length ();
|
| int index = string.indexOf('\t');
|
| if (index != -1) length = index;
|
| char [] text = new char [length + 1];
|
| char [] pattern = new char [length + 1];
|
| string.getChars (0, length, text, 0);
|
| int i = 0, j = 0;
|
| while (i < length) {
|
| pattern [j] = ' ';
|
| if (text [i] == '&') {
|
| i++;
|
| if (i < length && text [i] != '&') {
|
| pattern [j] = '_';
|
| }
|
| }
|
| text [j++] = text [i++];
|
| }
|
| while (j < i) {
|
| text [j] = pattern [j] = '\0';
|
| j++;
|
| }
|
| int list = OS.gtk_container_children (handle);
|
| int label = OS.g_list_nth_data (list, 0);
|
| byte [] buffer1 = Converter.wcsToMbcs (null, text);
|
| OS.gtk_label_set_text (label, buffer1);
|
| byte [] buffer2 = Converter.wcsToMbcs (null, pattern);
|
| OS.gtk_label_set_pattern (label, buffer2);
|
| }
|
| }
|