--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_qt/org.eclipse.swt/Eclipse SWT/qt/org/eclipse/swt/widgets/MenuItem.java Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,602 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * Portion Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ * Nokia Corporation - Qt implementation
+ *******************************************************************************/
+package org.eclipse.swt.widgets;
+
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.internal.qt.OS;
+import org.eclipse.swt.internal.qt.WidgetState;
+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, 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>
+ */
+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
+ * 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;
+ createWidget (parent.getItemCount ());
+ parent.menuItemAdded();
+}
+
+/**
+ * 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;
+ int count = parent.getItemCount ();
+ if (!(0 <= index && index <= count)) {
+ error (SWT.ERROR_INVALID_RANGE);
+ }
+ createWidget (index);
+ parent.menuItemAdded();
+}
+
+/**
+ * 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>
+ *
+ * @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);
+}
+
+static int checkStyle (int style) {
+ return checkBits (style, SWT.PUSH, SWT.CHECK, SWT.RADIO, SWT.SEPARATOR, SWT.CASCADE, 0);
+}
+
+protected void checkSubclass () {
+ if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+void createHandle_pp (int index) {
+ topHandle = handle = OS.QAction_new( parent.handle );
+ state |= WidgetState.HANDLE;
+
+ if ((parent.style & SWT.BAR) != 0){
+ OS.QMenuBar_addAction( parent.handle, handle );
+ }
+ else{
+ int itemCount = parent.getItemCount();
+ if( itemCount > 0 && index < itemCount ){
+ int beforeHandle = parent.getItems()[index].handle;
+ OS.QWidget_insertAction(parent.handle, beforeHandle, handle );
+ }
+ else{
+ OS.QMenu_addAction(parent.handle, handle );
+ }
+ }
+ int bits = SWT.CHECK | SWT.RADIO | SWT.PUSH | SWT.SEPARATOR ;
+ switch (style & bits) {
+ case SWT.SEPARATOR:
+ OS.QAction_setSeparator( handle, true );
+ break;
+ case SWT.RADIO:
+ if (parent.actionGroupHandle == 0){
+ parent.actionGroupHandle = OS.QActionGroup_new( parent.handle );
+ if ((parent.style & SWT.NO_RADIO_GROUP ) != 0 ){
+ OS.QActionGroup_setExclusive(parent.actionGroupHandle, false);
+ }
+ }
+ OS.QAction_setCheckable( handle, true );
+ OS.QActionGroup_addAction( parent.actionGroupHandle, handle );
+ break;
+ case SWT.CHECK:
+ OS.QAction_setCheckable( handle, true );
+ break;
+ case SWT.PUSH:
+ default:
+ break;
+ }
+}
+
+void fixMenus (Decorations newParent) {
+//Commented for now. Needed for the reparenting of the Controls
+// if (menu != null) menu.fixMenus (newParent);
+}
+
+/**
+ * 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 OS.QAction_isEnabled( handle );
+}
+
+/**
+ * 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;
+}
+
+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 OS.QAction_isChecked( handle );
+}
+
+void qt_signal_triggered_pp( boolean checked ) {
+ Event event = new Event ();
+ sendEvent (SWT.Selection, event);
+}
+
+void qt_signal_hover() {
+ sendEvent (SWT.Arm);
+}
+
+void hookEvents_pp () {
+ super.hookEvents_pp ();
+ if ((style & SWT.CASCADE) == 0 ){
+ int triggeredProxy = OS.SignalHandler_new(handle, display, OS.QSIGNAL_TRIGGERED);
+ OS.QObject_connectOrThrow(handle, "triggered(bool)", triggeredProxy, "widgetSignal(bool)", OS.QT_AUTOCONNECTION);
+ }
+ int hoveredProxy = OS.SignalHandler_new(handle, display, OS.QSIGNAL_HOVER );
+ OS.QObject_connectOrThrow(handle, "hovered()", hoveredProxy, "widgetSignal()", OS.QT_AUTOCONNECTION);
+}
+
+/**
+ * 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 ();
+}
+
+void releaseChildren_pp (boolean destroy) {
+ if (menu != null) {
+ menu.release (false);
+ menu = null;
+ }
+ super.releaseChildren_pp (destroy);
+}
+
+void releaseParent_pp () {
+ super.releaseParent_pp ();
+ if (menu != null) {
+ menu.dispose ();
+ }
+ menu = null;
+ parent.menuItemRemoved();
+}
+
+void releaseWidget_pp () {
+ if( (style & SWT.RADIO) != 0 ){
+ if (parent.actionGroupHandle != 0){
+ OS.QActionGroup_removeAction(parent.actionGroupHandle, handle);
+ }
+ }
+ OS.QWidget_removeAction( parent.handle, handle );
+ super.releaseWidget_pp ();
+ accelerator = 0;
+ parent = null;
+}
+
+/**
+ * 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);
+}
+
+/**
+ * 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;
+ int mask = 0;
+ if ((accelerator & SWT.ALT) != 0) mask |= OS.QT_ALTMODIFIER;
+ if ((accelerator & SWT.SHIFT) != 0) mask |= OS.QT_SHIFTMODIFIER;
+ if ((accelerator & SWT.CONTROL) != 0) mask |= OS.QT_CONTROLMODIFIER;
+ int keysym = accelerator & SWT.KEY_MASK;
+ int newKey = Display.untranslateKey (keysym);
+ if (newKey != 0) {
+ keysym = newKey;
+ }
+ int keySequenceHandle = OS.QKeySequence_new( mask + keysym );
+ OS.QAction_setShortcut( handle, keySequenceHandle );
+ this.accelerator = accelerator;
+ OS.QKeySequence_delete( keySequenceHandle );
+}
+
+/**
+ * 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();
+ OS.QAction_setEnabled(handle, enabled);
+
+}
+
+/**
+ * Sets the image the receiver will display to the argument.
+ * <p>
+ * Note: This operation is a hint and is not supported on
+ * platforms that do not have this concept (for example, Windows NT).
+ * </p>
+ *
+ * @param image the image to display
+ *
+ * @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 setImage (Image image) {
+ checkWidget();
+ if ((style & SWT.SEPARATOR) != 0) return;
+ super.setImage (image);
+ if (image != null ) {
+ OS.QAction_setIcon(handle, Internal_GfxPackageSupport.getIconHandle(image));
+ } else {
+ OS.QAction_setIcon(handle, Internal_GfxPackageSupport.getNullIconHandle());
+ }
+}
+
+/**
+ * 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);
+ }
+ int menuHandle = 0;
+ 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);
+ }
+ menuHandle = menu.handle;
+ }
+ /* Assign the new menu */
+ Menu oldMenu = this.menu;
+ if (oldMenu == menu) return;
+ if (oldMenu != null) oldMenu.cascade = null;
+ OS.QAction_setMenu( handle, menuHandle );
+ this.menu = menu;
+ if( this.menu != null )this.menu.cascade = this;
+}
+
+
+/**
+ * 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;
+ OS.QAction_setChecked( handle, selected );
+}
+
+/**
+ * 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
+ */
+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;
+ OS.QAction_setText(handle, string);
+ text = string;
+}
+
+}