--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2019 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
+ * Lars Vogel <Lars.Vogel@vogella.com> - Bug 455263
+ *******************************************************************************/
+package org.eclipse.swt;
+
+
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.widgets.*;
+
+/**
+ * This class provides access to a small number of SWT system-wide
+ * methods, and in addition defines the public constants provided
+ * by SWT.
+ * <p>
+ * By defining constants like UP and DOWN in a single class, SWT
+ * can share common names and concepts at the same time minimizing
+ * the number of classes, names and constants for the application
+ * programmer.
+ * </p><p>
+ * Note that some of the constants provided by this class represent
+ * optional, appearance related aspects of widgets which are available
+ * either only on some window systems, or for a differing set of
+ * widgets on each window system. These constants are marked
+ * as <em>HINT</em>s. The set of widgets which support a particular
+ * <em>HINT</em> may change from release to release, although we typically
+ * will not withdraw support for a <em>HINT</em> once it is made available.
+ * </p>
+ *
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ */
+
+/* NOTE:
+ * Good javadoc coding style is to put the values of static final
+ * constants in the comments. This reinforces the fact that
+ * consumers are allowed to rely on the value (and they must
+ * since the values are compiled inline in their code). We
+ * can <em>not</em> change the values of these constants between
+ * releases.
+ */
+public class SWT {
+
+ /* Widget Event Constants */
+
+ /**
+ * The null event type (value is 0).
+ *
+ * @since 3.0
+ */
+ public static final int None = 0;
+
+ /**
+ * The key down event type (value is 1).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addKeyListener
+ * @see org.eclipse.swt.widgets.Tracker#addKeyListener
+ * @see org.eclipse.swt.events.KeyListener#keyPressed
+ * @see org.eclipse.swt.events.KeyEvent
+ */
+ public static final int KeyDown = 1;
+
+ /**
+ * The key up event type (value is 2).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addKeyListener
+ * @see org.eclipse.swt.widgets.Tracker#addKeyListener
+ * @see org.eclipse.swt.events.KeyListener#keyReleased
+ * @see org.eclipse.swt.events.KeyEvent
+ */
+ public static final int KeyUp = 2;
+
+ /**
+ * The mouse down event type (value is 3).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseListener
+ * @see org.eclipse.swt.events.MouseListener#mouseDown
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseDown = 3;
+
+ /**
+ * The mouse up event type (value is 4).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseListener
+ * @see org.eclipse.swt.events.MouseListener#mouseUp
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseUp = 4;
+
+ /**
+ * The mouse move event type (value is 5).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseMoveListener
+ * @see org.eclipse.swt.events.MouseMoveListener#mouseMove
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseMove = 5;
+
+ /**
+ * The mouse enter event type (value is 6).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseTrackListener
+ * @see org.eclipse.swt.events.MouseTrackListener#mouseEnter
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseEnter = 6;
+
+ /**
+ * The mouse exit event type (value is 7).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseTrackListener
+ * @see org.eclipse.swt.events.MouseTrackListener#mouseExit
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseExit = 7;
+
+ /**
+ * The mouse double click event type (value is 8).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseListener
+ * @see org.eclipse.swt.events.MouseListener#mouseDoubleClick
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseDoubleClick = 8;
+
+ /**
+ * The paint event type (value is 9).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addPaintListener
+ * @see org.eclipse.swt.events.PaintListener#paintControl
+ * @see org.eclipse.swt.events.PaintEvent
+ */
+ public static final int Paint = 9;
+
+ /**
+ * The move event type (value is 10).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addControlListener
+ * @see org.eclipse.swt.widgets.TableColumn#addControlListener
+ * @see org.eclipse.swt.widgets.Tracker#addControlListener
+ * @see org.eclipse.swt.widgets.TreeColumn#addControlListener
+ * @see org.eclipse.swt.events.ControlListener#controlMoved
+ * @see org.eclipse.swt.events.ControlEvent
+ */
+ public static final int Move = 10;
+
+ /**
+ * The resize event type (value is 11).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addControlListener
+ * @see org.eclipse.swt.widgets.TableColumn#addControlListener
+ * @see org.eclipse.swt.widgets.Tracker#addControlListener
+ * @see org.eclipse.swt.widgets.TreeColumn#addControlListener
+ * @see org.eclipse.swt.events.ControlListener#controlResized
+ * @see org.eclipse.swt.events.ControlEvent
+ */
+ public static final int Resize = 11;
+
+ /**
+ * The dispose event type (value is 12).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Widget#addDisposeListener
+ * @see org.eclipse.swt.events.DisposeListener#widgetDisposed
+ * @see org.eclipse.swt.events.DisposeEvent
+ */
+ public static final int Dispose = 12;
+
+ /**
+ * The selection event type (value is 13).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Button#addSelectionListener
+ * @see org.eclipse.swt.widgets.Combo#addSelectionListener
+ * @see org.eclipse.swt.widgets.CoolItem#addSelectionListener
+ * @see org.eclipse.swt.widgets.Link#addSelectionListener
+ * @see org.eclipse.swt.widgets.List#addSelectionListener
+ * @see org.eclipse.swt.widgets.MenuItem#addSelectionListener
+ * @see org.eclipse.swt.widgets.Sash#addSelectionListener
+ * @see org.eclipse.swt.widgets.Scale#addSelectionListener
+ * @see org.eclipse.swt.widgets.ScrollBar#addSelectionListener
+ * @see org.eclipse.swt.widgets.Slider#addSelectionListener
+ * @see org.eclipse.swt.widgets.TabFolder#addSelectionListener
+ * @see org.eclipse.swt.widgets.Table#addSelectionListener
+ * @see org.eclipse.swt.widgets.TableColumn#addSelectionListener
+ * @see org.eclipse.swt.widgets.ToolItem#addSelectionListener
+ * @see org.eclipse.swt.widgets.TrayItem#addSelectionListener
+ * @see org.eclipse.swt.widgets.Tree#addSelectionListener
+ * @see org.eclipse.swt.widgets.TreeColumn#addSelectionListener
+ * @see org.eclipse.swt.events.SelectionListener#widgetSelected
+ * @see org.eclipse.swt.events.SelectionEvent
+ */
+ public static final int Selection = 13;
+
+ /**
+ * The default selection event type (value is 14).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Combo#addSelectionListener
+ * @see org.eclipse.swt.widgets.List#addSelectionListener
+ * @see org.eclipse.swt.widgets.Spinner#addSelectionListener
+ * @see org.eclipse.swt.widgets.Table#addSelectionListener
+ * @see org.eclipse.swt.widgets.Text#addSelectionListener
+ * @see org.eclipse.swt.widgets.TrayItem#addSelectionListener
+ * @see org.eclipse.swt.widgets.Tree#addSelectionListener
+ * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected
+ * @see org.eclipse.swt.events.SelectionEvent
+ */
+ public static final int DefaultSelection = 14;
+
+ /**
+ * The focus in event type (value is 15).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addFocusListener
+ * @see org.eclipse.swt.events.FocusListener#focusGained
+ * @see org.eclipse.swt.events.FocusEvent
+ */
+ public static final int FocusIn = 15;
+
+ /**
+ * The focus out event type (value is 16).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addFocusListener
+ * @see org.eclipse.swt.events.FocusListener#focusLost
+ * @see org.eclipse.swt.events.FocusEvent
+ */
+ public static final int FocusOut = 16;
+
+ /**
+ * The expand event type (value is 17).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Tree#addTreeListener
+ * @see org.eclipse.swt.events.TreeListener#treeExpanded
+ * @see org.eclipse.swt.events.TreeEvent
+ */
+ public static final int Expand = 17;
+
+ /**
+ * The collapse event type (value is 18).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Tree#addTreeListener
+ * @see org.eclipse.swt.events.TreeListener#treeCollapsed
+ * @see org.eclipse.swt.events.TreeEvent
+ */
+ public static final int Collapse = 18;
+
+ /**
+ * The iconify event type (value is 19).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Shell#addShellListener
+ * @see org.eclipse.swt.events.ShellListener#shellIconified
+ * @see org.eclipse.swt.events.ShellEvent
+ */
+ public static final int Iconify = 19;
+
+ /**
+ * The de-iconify event type (value is 20).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Shell#addShellListener
+ * @see org.eclipse.swt.events.ShellListener#shellDeiconified
+ * @see org.eclipse.swt.events.ShellEvent
+ */
+ public static final int Deiconify = 20;
+
+ /**
+ * The close event type (value is 21).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Shell#addShellListener
+ * @see org.eclipse.swt.events.ShellListener#shellClosed
+ * @see org.eclipse.swt.events.ShellEvent
+ */
+ public static final int Close = 21;
+
+ /**
+ * The show event type (value is 22).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Menu#addMenuListener
+ * @see org.eclipse.swt.events.MenuListener#menuShown
+ * @see org.eclipse.swt.events.MenuEvent
+ */
+ public static final int Show = 22;
+
+ /**
+ * The hide event type (value is 23).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Menu#addMenuListener
+ * @see org.eclipse.swt.events.MenuListener#menuHidden
+ * @see org.eclipse.swt.events.MenuEvent
+ */
+ public static final int Hide = 23;
+
+ /**
+ * The modify event type (value is 24).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Combo#addModifyListener
+ * @see org.eclipse.swt.widgets.Spinner#addModifyListener
+ * @see org.eclipse.swt.widgets.Text#addModifyListener
+ * @see org.eclipse.swt.events.ModifyListener#modifyText
+ * @see org.eclipse.swt.events.ModifyEvent
+ */
+ public static final int Modify = 24;
+
+ /**
+ * The verify event type (value is 25).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.custom.CCombo#addVerifyListener
+ * @see org.eclipse.swt.widgets.Combo#addVerifyListener
+ * @see org.eclipse.swt.custom.StyledText#addVerifyListener
+ * @see org.eclipse.swt.widgets.Text#addVerifyListener
+ * @see org.eclipse.swt.events.VerifyListener#verifyText
+ * @see org.eclipse.swt.events.VerifyEvent
+ */
+ public static final int Verify = 25;
+
+ /**
+ * The activate event type (value is 26).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Shell#addShellListener
+ * @see org.eclipse.swt.events.ShellListener#shellActivated
+ * @see org.eclipse.swt.events.ShellEvent
+ */
+ public static final int Activate = 26;
+
+ /**
+ * The deactivate event type (value is 27).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Shell#addShellListener
+ * @see org.eclipse.swt.events.ShellListener#shellDeactivated
+ * @see org.eclipse.swt.events.ShellEvent
+ */
+ public static final int Deactivate = 27;
+
+ /**
+ * The help event type (value is 28).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addHelpListener
+ * @see org.eclipse.swt.widgets.Menu#addHelpListener
+ * @see org.eclipse.swt.widgets.MenuItem#addHelpListener
+ * @see org.eclipse.swt.events.HelpListener#helpRequested
+ * @see org.eclipse.swt.events.HelpEvent
+ */
+ public static final int Help = 28;
+
+ /**
+ * The drag detect event type (value is 29).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addDragDetectListener
+ * @see org.eclipse.swt.events.DragDetectListener#dragDetected
+ * @see org.eclipse.swt.events.DragDetectEvent
+ * @see org.eclipse.swt.dnd.DragSource
+ */
+ public static final int DragDetect = 29;
+
+ /**
+ * The arm event type (value is 30).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#addArmListener
+ * @see org.eclipse.swt.events.ArmListener#widgetArmed
+ * @see org.eclipse.swt.events.ArmEvent
+ */
+ public static final int Arm = 30;
+
+ /**
+ * The traverse event type (value is 31).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addTraverseListener
+ * @see org.eclipse.swt.events.TraverseListener#keyTraversed
+ * @see org.eclipse.swt.events.TraverseEvent
+ */
+ public static final int Traverse = 31;
+
+ /**
+ * The mouse hover event type (value is 32).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseTrackListener
+ * @see org.eclipse.swt.events.MouseTrackListener#mouseHover
+ * @see org.eclipse.swt.events.MouseEvent
+ */
+ public static final int MouseHover = 32;
+
+ /**
+ * The hardware key down event type (value is 33).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ */
+ public static final int HardKeyDown = 33;
+
+ /**
+ * The hardware key up event type (value is 34).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ */
+ public static final int HardKeyUp = 34;
+
+ /**
+ * The menu detect event type (value is 35).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Control#addMenuDetectListener
+ * @see org.eclipse.swt.widgets.TrayItem#addMenuDetectListener
+ * @see org.eclipse.swt.events.MenuDetectListener#menuDetected
+ * @see org.eclipse.swt.events.MenuDetectEvent
+ *
+ * @since 3.0
+ */
+ public static final int MenuDetect = 35;
+
+ /**
+ * The set data event type (value is 36).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Table
+ * @see org.eclipse.swt.widgets.Tree
+ *
+ * @since 3.0
+ */
+ public static final int SetData = 36;
+
+ /**
+ * The mouse vertical wheel event type (value is 37).
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseWheelListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.6
+ */
+ public static final int MouseVerticalWheel = 37;
+
+ /**
+ * The mouse horizontal wheel event type (value is 38).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.6
+ */
+ public static final int MouseHorizontalWheel = 38;
+
+ /**
+ * The mouse wheel event type (value is 37).
+ * This is a synonym for {@link #MouseVerticalWheel} (value is 37).
+ * Newer applications should use {@link #MouseVerticalWheel} instead
+ * of {@link #MouseWheel} to make code more understandable.
+ *
+ * @see org.eclipse.swt.widgets.Control#addMouseWheelListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.1
+ */
+ public static final int MouseWheel = MouseVerticalWheel;
+
+ /**
+ * The settings changed event type (value is 39).
+ * <p>
+ * The settings changed event is sent when an operating system
+ * property, such as a system font or color, has been changed.
+ * The event occurs after the property has been changed, but
+ * before any widget is redrawn. Applications that cache operating
+ * system properties can use this event to update their caches.
+ * A specific property change can be detected by querying the
+ * new value of a property and comparing it with the equivalent
+ * cached value. The operating system automatically redraws and
+ * lays out all widgets after this event is sent.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.2
+ */
+ public static final int Settings = 39;
+
+ /**
+ * The erase item event type (value is 40).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.2
+ */
+ public static final int EraseItem = 40;
+
+ /**
+ * The measure item event type (value is 41).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.2
+ */
+ public static final int MeasureItem = 41;
+
+ /**
+ * The paint item event type (value is 42).
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.2
+ */
+ public static final int PaintItem = 42;
+
+ /**
+ * The IME composition event type (value is 43).
+ * <p>
+ * The IME composition event is sent to allow
+ * custom text editors to implement in-line
+ * editing of international text.
+ * </p>
+ *
+ * The detail field indicates the action to be taken:
+ * <ul>
+ * <li>{@link SWT#COMPOSITION_CHANGED}</li>
+ * <li>{@link SWT#COMPOSITION_OFFSET}</li>
+ * <li>{@link SWT#COMPOSITION_SELECTION}</li>
+ * </ul>
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.4
+ */
+ public static final int ImeComposition = 43;
+
+ /**
+ * The orientation change event type (value is 44).
+ * <p>
+ * On some platforms the orientation of text widgets
+ * can be changed by keyboard shortcut.
+ * The application can use the <code>doit</code> field
+ * of the event to stop the change from happening.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.6
+ */
+ public static final int OrientationChange = 44;
+
+ /**
+ * The skin event type (value is 45).
+ *
+ * <p>
+ * The skin event is sent by the display when a widget needs to
+ * be skinned.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ * @see org.eclipse.swt.widgets.Widget#reskin(int)
+ *
+ * @since 3.6
+ */
+ public static final int Skin = 45;
+
+ /**
+ * The open document event type (value is 46).
+ *
+ * <p>
+ * This event is sent when SWT receives notification that a document
+ * should be opened.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.6
+ */
+ public static final int OpenDocument = 46;
+
+ /**
+ * The touch event type (value is 47).
+ *
+ * <p>
+ * This event is sent when a touch has been performed
+ * on a touch-based input source.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.7
+ */
+ public static final int Touch = 47;
+
+ /**
+ * The gesture event type (value is 48).
+ *
+ * <p>
+ * This event is sent when a gesture has been performed.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Event
+ * @see SWT#GESTURE_MAGNIFY
+ * @see SWT#GESTURE_PAN
+ * @see SWT#GESTURE_ROTATE
+ * @see SWT#GESTURE_SWIPE
+ *
+ * @since 3.7
+ */
+ public static final int Gesture = 48;
+
+ /**
+ * The segments event type (value is 49).
+ *
+ * <p>
+ * This event is sent when text content has been changed.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @see org.eclipse.swt.widgets.Text#addSegmentListener
+ * @see org.eclipse.swt.events.SegmentEvent
+ *
+ * @since 3.8
+ */
+ public static final int Segments = 49;
+
+ /**
+ * The PreEvent event type (value is 50).
+ *
+ * <p>
+ * This event is sent before an event other than {@link #PreExternalEventDispatch} or
+ * {@link #PostExternalEventDispatch} is dispatched.
+ * </p>
+ * <p>
+ * The detail field of the event contains the type of the following event.
+ * </p>
+ *
+ * @since 3.103
+ */
+ public static final int PreEvent = 50;
+
+ /**
+ * The PostEvent event type (value is 51).
+ *
+ * <p>
+ * This event is sent after an event other than {@link #PreExternalEventDispatch} or
+ * {@link #PostExternalEventDispatch} is dispatched.
+ * </p>
+ * <p>
+ * The detail field of the event contains the type of the prior event.
+ * </p>
+ *
+ * @since 3.103
+ */
+ public static final int PostEvent = 51;
+
+ /**
+ * The PreExternalEventDispatch event type (value is 52).
+ *
+ * <p>
+ * This event is sent before calling a blocking method that does its own event dispatch outside
+ * of the SWT code.
+ * </p>
+ *
+ * @since 3.104
+ */
+ public static final int PreExternalEventDispatch = 52;
+
+ /**
+ * The PostExternalEventDispatch event type (value is 53).
+ *
+ * <p>
+ * This event is sent after calling a blocking method that does its own event dispatch outside
+ * of the SWT code.
+ * </p>
+ *
+ * @since 3.104
+ */
+ public static final int PostExternalEventDispatch = 53;
+
+ /**
+ * @deprecated The same as PreExternalEventDispatch (value is 52).
+ * @since 3.103
+ */
+ @Deprecated
+ public static final int Sleep = PreExternalEventDispatch;
+
+ /**
+ * @deprecated The same as PostExternalEventDispatch (value is 53).
+ * @since 3.103
+ */
+ @Deprecated
+ public static final int Wakeup = PostExternalEventDispatch;
+
+ /**
+ * The open URL event type (value is 54).
+ *
+ * <p>
+ * This event is sent when SWT receives notification that a URL
+ * should be opened.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Display#addListener
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.107
+ */
+ public static final int OpenUrl = 54;
+
+ /**
+ * The SWT zoom change event type (value is 55).
+ *
+ * <p>
+ * This event is sent on <code>Shell</code> when the SWT zoom has changed. The SWT
+ * zoom changes when the operating system DPI or scale factor changes dynamically.
+ * </p>
+ * <p>
+ * Note that this is a <em>HINT</em> and is not sent on platforms that do not
+ * support dynamic DPI changes. This event is currently sent on Windows 10 and GTK
+ * only.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#addListener
+ * @see org.eclipse.swt.widgets.Display#addFilter
+ * @see org.eclipse.swt.widgets.Event
+ *
+ * @since 3.108
+ */
+ public static final int ZoomChanged = 55;
+
+ /* Event Details */
+
+ /**
+ * The IME composition event detail that indicates
+ * a change in the IME composition. The text field
+ * of the event is the new composition text.
+ * The start and end indicate the offsets where the
+ * composition text should be inserted.
+ * The styles and ranges are stored in the IME
+ * object (value is 1).
+ *
+ * @see SWT#ImeComposition
+ *
+ * @since 3.4
+ */
+ public static final int COMPOSITION_CHANGED = 1;
+
+ /**
+ * The IME composition event detail that indicates
+ * that the IME needs the offset for a given location.
+ * The x and y fields of the event are used by the
+ * application to determine the offset.
+ *
+ * The index field of the event should be set to the
+ * text offset at that location. The count field should
+ * be set to indicate whether the location is closer to
+ * the leading edge (0) or the trailing edge (1) (value is 2).
+ *
+ * @see SWT#ImeComposition
+ * @see org.eclipse.swt.graphics.TextLayout#getOffset(int, int, int[])
+ *
+ * @since 3.4
+ */
+ public static final int COMPOSITION_OFFSET = 2;
+
+ /**
+ * The IME composition event detail that indicates
+ * that IME needs the selected text and its start
+ * and end offsets (value is 3).
+ *
+ * @see SWT#ImeComposition
+ *
+ * @since 3.4
+ */
+ public static final int COMPOSITION_SELECTION = 3;
+
+ /**
+ * Indicates that a user-interface component is being dragged,
+ * for example dragging the thumb of a scroll bar (value is 1).
+ */
+ public static final int DRAG = 1;
+
+ /**
+ * Event detail field that indicates a user-interface component
+ * state is selected (value is 1<<1).
+ *
+ * @since 3.2
+ */
+ public static final int SELECTED = 1 << 1;
+
+ /**
+ * Event detail field that indicates a user-interface component
+ * state is focused (value is 1<<2).
+ *
+ * @since 3.2
+ */
+ public static final int FOCUSED = 1 << 2;
+
+ /**
+ * Event detail field that indicates a user-interface component
+ * draws the background (value is 1<<3).
+ *
+ * @since 3.2
+ */
+ public static final int BACKGROUND = 1 << 3;
+
+ /**
+ * Event detail field that indicates a user-interface component
+ * draws the foreground (value is 1<<4).
+ *
+ * @since 3.2
+ */
+ public static final int FOREGROUND = 1 << 4;
+
+ /**
+ * Event detail field that indicates a user-interface component
+ * state is hot (value is 1<<5).
+ *
+ * @since 3.3
+ */
+ public static final int HOT = 1 << 5;
+
+ /* This code is intentionally commented */
+ //public static final int PRESSED = 1 << 3;
+ //public static final int ACTIVE = 1 << 4;
+ //public static final int DISABLED = 1 << 5;
+ //public static final int HOT = 1 << 6;
+ //public static final int DEFAULTED = 1 << 7;
+
+ /**
+ * Traversal event detail field value indicating that no
+ * traversal action should be taken
+ * (value is 0).
+ */
+ public static final int TRAVERSE_NONE = 0;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that a dialog should be cancelled was
+ * pressed; typically, this is the ESC key
+ * (value is 1<<1).
+ */
+ public static final int TRAVERSE_ESCAPE = 1 << 1;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which activates the default button in a dialog was
+ * pressed; typically, this is the ENTER key
+ * (value is 1<<2).
+ */
+ public static final int TRAVERSE_RETURN = 1 << 2;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that focus should be given to the
+ * previous tab group was pressed; typically, this is the
+ * SHIFT-TAB key sequence
+ * (value is 1<<3).
+ */
+ public static final int TRAVERSE_TAB_PREVIOUS = 1 << 3;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that focus should be given to the
+ * next tab group was pressed; typically, this is the
+ * TAB key
+ * (value is 1<<4).
+ */
+ public static final int TRAVERSE_TAB_NEXT = 1 << 4;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that focus should be given to the
+ * previous tab item was pressed; typically, this is either
+ * the LEFT-ARROW or UP-ARROW keys
+ * (value is 1<<5).
+ */
+ public static final int TRAVERSE_ARROW_PREVIOUS = 1 << 5;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that focus should be given to the
+ * previous tab item was pressed; typically, this is either
+ * the RIGHT-ARROW or DOWN-ARROW keys
+ * (value is 1<<6).
+ */
+ public static final int TRAVERSE_ARROW_NEXT = 1 << 6;
+
+ /**
+ * Traversal event detail field value indicating that a
+ * mnemonic key sequence was pressed
+ * (value is 1<<7).
+ */
+ public static final int TRAVERSE_MNEMONIC = 1 << 7;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that the previous page of a multi-page
+ * window should be shown was pressed; typically, this
+ * is the CTRL-PAGEUP key sequence
+ * (value is 1<<8).
+ */
+ public static final int TRAVERSE_PAGE_PREVIOUS = 1 << 8;
+
+ /**
+ * Traversal event detail field value indicating that the
+ * key which designates that the next page of a multi-page
+ * window should be shown was pressed; typically, this
+ * is the CTRL-PAGEDOWN key sequence
+ * (value is 1<<9).
+ */
+ public static final int TRAVERSE_PAGE_NEXT = 1 << 9;
+
+ /**
+ * Gesture event detail field value indicating that a continuous
+ * gesture is about to begin.
+ *
+ * @since 3.7
+ */
+ public static final int GESTURE_BEGIN = 1 << 1;
+
+ /**
+ * Gesture event detail field value indicating that a continuous
+ * gesture has ended.
+ *
+ * @since 3.7
+ */
+ public static final int GESTURE_END = 1 << 2;
+
+ /**
+ * Gesture event detail field value indicating that a
+ * rotation gesture has happened. Only the rotation field
+ * of the event is valid.
+ *
+ * @since 3.7
+ */
+ public static final int GESTURE_ROTATE = 1 << 3;
+
+ /**
+ * Gesture event detail field value indicating that a
+ * swipe gesture has happened.
+ *
+ * @since 3.7
+ */
+ public static final int GESTURE_SWIPE = 1 << 4;
+
+ /**
+ * Gesture event detail field value indicating that a
+ * magnification gesture has happened.
+ *
+ * @since 3.7
+ */
+ public static final int GESTURE_MAGNIFY = 1 << 5;
+
+ /**
+ * Gesture event detail field value indicating that a
+ * panning (two-finger scroll) gesture has happened.
+ *
+ * @since 3.7
+ */
+ public static final int GESTURE_PAN = 1 << 6;
+
+ /**
+ * A constant indicating that a finger touched the device.
+ *
+ * @see org.eclipse.swt.widgets.Touch#state
+ *
+ * @since 3.7
+ */
+ public static final int TOUCHSTATE_DOWN = 1 << 0;
+
+ /**
+ * A constant indicating that a finger moved on the device.
+ *
+ * @see org.eclipse.swt.widgets.Touch#state
+ *
+ * @since 3.7
+ */
+ public static final int TOUCHSTATE_MOVE = 1 << 1;
+
+ /**
+ * A constant indicating that a finger was lifted from the device.
+ *
+ * @see org.eclipse.swt.widgets.Touch#state
+ *
+ * @since 3.7
+ */
+ public static final int TOUCHSTATE_UP = 1 << 2;
+
+ /**
+ * MenuDetect event detail value indicating that a context menu
+ * was requested by a mouse or other pointing device (value is 0).
+ *
+ * @since 3.8
+ */
+ public static final int MENU_MOUSE = 0;
+
+ /**
+ * MenuDetect event detail value indicating that a context menu
+ * was requested by a keyboard or other focus-based device (value is 1).
+ *
+ * @since 3.8
+ */
+ public static final int MENU_KEYBOARD = 1;
+
+ /**
+ * A constant indicating that widgets have changed.
+ * (value is 1<<1).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code> layout</li>
+ * </ul>
+ *
+ * @see org.eclipse.swt.widgets.Composite#layout(org.eclipse.swt.widgets.Control[], int)
+ *
+ * @since 3.6
+ */
+ public static final int CHANGED = 1 << 1;
+
+ /**
+ * A constant indicating that a given operation should be deferred.
+ * (value is 1<<2).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code> layout</li>
+ * </ul>
+ *
+ * @see org.eclipse.swt.widgets.Composite#layout(org.eclipse.swt.widgets.Control[], int)
+ *
+ * @since 3.6
+ */
+ public static final int DEFER = 1 << 2;
+
+ /**
+ * A constant known to be zero (0), typically used in operations
+ * which take bit flags to indicate that "no bits are set".
+ */
+ public static final int NONE = 0;
+
+ /**
+ * A constant known to be zero (0), used in operations which
+ * take pointers to indicate a null argument.
+ */
+ public static final int NULL = 0;
+
+ /**
+ * Indicates that a default should be used (value is -1).
+ */
+ public static final int DEFAULT = -1;
+
+ /**
+ * Indicates that a property is off (value is 0).
+ *
+ * @since 3.1
+ */
+ public static final int OFF = 0;
+
+ /**
+ * Indicates that a property is on (value is 1).
+ *
+ * @since 3.1
+ */
+ public static final int ON = 1;
+
+ /**
+ * Indicates low quality (value is 1).
+ *
+ * @since 3.1
+ */
+ public static final int LOW = 1;
+
+ /**
+ * Indicates high quality (value is 2).
+ *
+ * @since 3.1
+ */
+ public static final int HIGH = 2;
+
+ /**
+ * Style constant for menu bar behavior (value is 1<<1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Menu</code></li>
+ * </ul>
+ */
+ public static final int BAR = 1 << 1;
+
+ /**
+ * Style constant for drop down menu/list behavior (value is 1<<2).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Menu</code></li>
+ * <li><code>ToolItem</code></li>
+ * <li><code>CoolItem</code></li>
+ * <li><code>Combo</code></li>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ */
+ public static final int DROP_DOWN = 1 << 2;
+
+ /**
+ * Style constant for pop up menu behavior (value is 1<<3).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Menu</code></li>
+ * </ul>
+ */
+ public static final int POP_UP = 1 << 3;
+
+ /**
+ * Style constant for line separator behavior (value is 1<<1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Label</code></li>
+ * <li><code>MenuItem</code></li>
+ * <li><code>ToolItem</code></li>
+ * </ul>
+ */
+ public static final int SEPARATOR = 1 << 1;
+
+ /**
+ * Constant representing a flexible space separator in a ToolBar.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>ToolItem.setWidth()</code></li>
+ * </ul>
+ *
+ * @since 3.7
+ */
+ public static final int SEPARATOR_FILL = -2;
+
+ /**
+ * Style constant for toggle button behavior (value is 1<<1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * </ul>
+ */
+ public static final int TOGGLE = 1 << 1;
+
+ /**
+ * Style constant for arrow button behavior (value is 1<<2).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * </ul>
+ */
+ public static final int ARROW = 1 << 2;
+
+ /**
+ * Style constant for push button behavior (value is 1<<3).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>MenuItem</code></li>
+ * <li><code>ToolItem</code></li>
+ * </ul>
+ */
+ public static final int PUSH = 1 << 3;
+
+ /**
+ * Style constant for radio button behavior (value is 1<<4).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>MenuItem</code></li>
+ * <li><code>ToolItem</code></li>
+ * </ul>
+ */
+ public static final int RADIO = 1 << 4;
+
+ /**
+ * Style constant for check box behavior (value is 1<<5).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>MenuItem</code></li>
+ * <li><code>ToolItem</code></li>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * </ul>
+ */
+ public static final int CHECK = 1 << 5;
+
+ /**
+ * Style constant for cascade behavior (value is 1<<6).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>MenuItem</code></li>
+ * </ul>
+ */
+ public static final int CASCADE = 1 << 6;
+
+ /**
+ * Style constant for multi-selection behavior in lists
+ * and multiple line support on text fields (value is 1<<1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Text</code></li>
+ * <li><code>List</code></li>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * <li><code>FileDialog</code></li>
+ * </ul>
+ */
+ public static final int MULTI = 1 << 1;
+
+ /**
+ * Style constant for single selection behavior in lists
+ * and single line support on text fields (value is 1<<2).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Text</code></li>
+ * <li><code>List</code></li>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * </ul>
+ */
+ public static final int SINGLE = 1 << 2;
+
+ /**
+ * Style constant for read-only behavior (value is 1<<3).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Combo</code></li>
+ * <li><code>Text</code></li>
+ * </ul>
+ */
+ public static final int READ_ONLY = 1 << 3;
+
+ /**
+ * Style constant for automatic line wrap behavior (value is 1<<6).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>Label</code></li>
+ * <li><code>Text</code></li>
+ * <li><code>ToolBar</code></li>
+ * <li><code>Spinner</code></li>
+ * </ul>
+ */
+ public static final int WRAP = 1 << 6;
+
+ /**
+ * Style constant for search behavior (value is 1<<7).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Text</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int SEARCH = 1 << 7;
+
+ /**
+ * Style constant for simple (not drop down) behavior (value is 1<<6).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Combo</code></li>
+ * </ul>
+ */
+ public static final int SIMPLE = 1 << 6;
+
+ /**
+ * Style constant for password behavior (value is 1<<22).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Text</code></li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+ public static final int PASSWORD = 1 << 22;
+
+ /**
+ * Style constant for shadow in behavior (value is 1<<2).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Label</code></li>
+ * <li><code>Group</code></li>
+ * </ul>
+ */
+ public static final int SHADOW_IN = 1 << 2;
+
+ /**
+ * Style constant for shadow out behavior (value is 1<<3).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Label</code></li>
+ * <li><code>Group</code></li>
+ * <li><code>ToolBar</code></li>
+ * </ul>
+ */
+ public static final int SHADOW_OUT = 1 << 3;
+
+ /**
+ * Style constant for shadow etched in behavior (value is 1<<4).
+ * <br>Note that this is a <em>HINT</em>. It is currently ignored on all platforms.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Group</code></li>
+ * </ul>
+ */
+ public static final int SHADOW_ETCHED_IN = 1 << 4;
+
+ /**
+ * Style constant for shadow etched out behavior (value is 1<<6).
+ * <br>Note that this is a <em>HINT</em>. It is currently ignored on all platforms.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Group</code></li>
+ * </ul>
+ */
+ public static final int SHADOW_ETCHED_OUT = 1 << 6;
+
+ /**
+ * Style constant for no shadow behavior (value is 1<<5).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Label</code></li>
+ * <li><code>Group</code></li>
+ * </ul>
+ */
+ public static final int SHADOW_NONE = 1 << 5;
+
+ /**
+ * Style constant for progress bar behavior (value is 1<<1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>ProgressBar</code></li>
+ * </ul>
+ */
+ public static final int INDETERMINATE = 1 << 1;
+
+ /**
+ * Style constant for tool window behavior (value is 1<<2).
+ * <p>
+ * A tool window is a window intended to be used as a floating toolbar.
+ * It typically has a title bar that is shorter than a normal title bar,
+ * and the window title is typically drawn using a smaller font.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p><p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int TOOL = 1 << 2;
+
+ /**
+ * Style constant to ensure no trimmings are used (value is 1<<3).
+ * <br>Note that this overrides all other trim styles.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int NO_TRIM = 1 << 3;
+
+ /**
+ * Style constant for resize box trim (value is 1<<4).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * <li><code>Tracker</code></li>
+ * </ul>
+ */
+ public static final int RESIZE = 1 << 4;
+
+ /**
+ * Style constant for title area trim (value is 1<<5).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int TITLE = 1 << 5;
+
+ /**
+ * Style constant for close box trim (value is 1<<6,
+ * since we do not distinguish between CLOSE style and MENU style).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int CLOSE = 1 << 6;
+
+ /**
+ * Style constant for shell menu trim (value is 1<<6,
+ * since we do not distinguish between CLOSE style and MENU style).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int MENU = CLOSE;
+
+ /**
+ * Style constant for minimize box trim (value is 1<<7).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int MIN = 1 << 7;
+
+ /**
+ * Style constant for maximize box trim (value is 1<<10).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Decorations</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int MAX = 1 << 10;
+
+ /**
+ * Style constant for the no move behavior (value is 1<<23).
+ * Creates the title trim when no other trim style is specified.
+ * Doesn't create the title trim when NO_TRIM is specified.
+ * <p>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Shell</code></li>
+ * </ul>
+ * @since 3.105
+ */
+ public static final int NO_MOVE = 1 << 23;
+
+ /**
+ * Style constant for horizontal scrollbar behavior (value is 1<<8).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Scrollable</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int H_SCROLL = 1 << 8;
+
+ /**
+ * Style constant for vertical scrollbar behavior (value is 1<<9).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Scrollable</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int V_SCROLL = 1 << 9;
+
+ /**
+ * Style constant for no scrollbar behavior (value is 1<<4).
+ * <p>
+ * When neither H_SCROLL or V_SCROLL are specified, controls
+ * are free to create the default scroll bars for the control.
+ * Using NO_SCROLL overrides the default and forces the control
+ * to have no scroll bars.
+ *
+ * <b>Used By:</b></p>
+ * <ul>
+ * <li><code>Tree</code></li>
+ * <li><code>Table</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int NO_SCROLL = 1 << 4;
+
+ /**
+ * Style constant for bordered behavior (value is 1<<11).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int BORDER = 1 << 11;
+
+ /**
+ * Style constant indicating that the window manager should clip
+ * a widget's children with respect to its viewable area. (value is 1<<12).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int CLIP_CHILDREN = 1 << 12;
+
+ /**
+ * Style constant indicating that the window manager should clip
+ * a widget's siblings with respect to its viewable area. (value is 1<<13).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int CLIP_SIBLINGS = 1 << 13;
+
+ /**
+ * Style constant for always on top behavior (value is 1<<14).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Shell</code> and subclasses</li>
+ * </ul>
+ */
+ public static final int ON_TOP = 1 << 14;
+
+ /**
+ * Style constant for sheet window behavior (value is 1<<28).
+ * <p>
+ * A sheet window is a window intended to be used as a temporary modal
+ * dialog that is attached to a parent window. It is typically used to
+ * prompt the user before proceeding. The window trim, positioning and
+ * general look of a sheet window is platform specific. For example,
+ * on the Macintosh, at the time this documentation was written, the
+ * window title is not visible.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p><p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Dialog</code> and subclasses</li>
+ * <li><code>Shell</code> and subclasses</li>
+ * </ul>
+ *
+ * @since 3.5
+ */
+ public static final int SHEET = 1 << 28;
+
+ /**
+ * Trim style convenience constant for the most common top level shell appearance
+ * (value is CLOSE|TITLE|MIN|MAX|RESIZE).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Shell</code></li>
+ * </ul>
+ */
+ public static final int SHELL_TRIM = CLOSE | TITLE | MIN | MAX | RESIZE;
+
+ /**
+ * Trim style convenience constant for the most common dialog shell appearance
+ * (value is CLOSE|TITLE|BORDER).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Shell</code></li>
+ * </ul>
+ */
+ public static final int DIALOG_TRIM = TITLE | CLOSE | BORDER;
+
+ /**
+ * Style constant for modeless behavior (value is 0).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Dialog</code></li>
+ * <li><code>Shell</code></li>
+ * </ul>
+ */
+ public static final int MODELESS = 0;
+
+ /**
+ * Style constant for primary modal behavior (value is 1<<15).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Dialog</code></li>
+ * <li><code>Shell</code></li>
+ * </ul>
+ */
+ public static final int PRIMARY_MODAL = 1 << 15;
+
+ /**
+ * Style constant for application modal behavior (value is 1<<16).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Dialog</code></li>
+ * <li><code>Shell</code></li>
+ * </ul>
+ */
+ public static final int APPLICATION_MODAL = 1 << 16;
+
+ /**
+ * Style constant for system modal behavior (value is 1<<17).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Dialog</code></li>
+ * <li><code>Shell</code></li>
+ * </ul>
+ */
+ public static final int SYSTEM_MODAL = 1 << 17;
+
+ /**
+ * Style constant for selection hiding behavior when the widget loses focus (value is 1<<15).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Table</code></li>
+ * </ul>
+ */
+ public static final int HIDE_SELECTION = 1 << 15;
+
+ /**
+ * Style constant for full row selection behavior and
+ * selection constant indicating that a full line should be
+ * drawn. (value is 1<<16).
+ * <br>Note that for some widgets this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * <li><code>StyledText</code></li>
+ * <li><code>TextLayout</code></li>
+ * </ul>
+ */
+ public static final int FULL_SELECTION = 1 << 16;
+
+ /**
+ * Style constant for flat appearance. (value is 1<<23).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>ToolBar</code></li>
+ * </ul>
+ */
+ public static final int FLAT = 1 << 23;
+
+ /**
+ * Style constant for smooth appearance. (value is 1<<16).
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p><ul>
+ * <li><code>ProgressBar</code></li>
+ * <li><code>Sash</code></li>
+ * </ul>
+ */
+ public static final int SMOOTH = 1 << 16;
+
+ /**
+ * Style constant for no background behavior (value is 1<<18).
+ * <p>
+ * By default, before a widget paints, the client area is filled with the current background.
+ * When this style is specified, the background is not filled, and the application is responsible
+ * for filling every pixel of the client area.
+ * This style might be used as an alternative to "double-buffering" in order to reduce flicker.
+ * This style does not mean "transparent" - widgets that are obscured will not draw through.
+ * </p><p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * </ul>
+ */
+ public static final int NO_BACKGROUND = 1 << 18;
+
+ /**
+ * Style constant for no focus from the mouse behavior (value is 1<<19).
+ * <p>
+ * Normally, when the user clicks on a control, focus is assigned to that
+ * control, providing the control has no children. Some controls, such as
+ * tool bars and sashes, don't normally take focus when the mouse is clicked
+ * or accept focus when assigned from within the program. This style allows
+ * Composites to implement "no focus" mouse behavior.
+ *
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * </ul>
+ */
+ public static final int NO_FOCUS = 1 << 19;
+
+ /**
+ * Style constant for no redraw on resize behavior (value is 1<<20).
+ * <p>
+ * This style stops the entire client area from being invalidated when the size
+ * of the Canvas changes. Specifically, when the size of the Canvas gets smaller,
+ * the SWT.Paint event is not sent. When it gets bigger, an SWT.Paint event is
+ * sent with a GC clipped to only the new areas to be painted. Without this
+ * style, the entire client area will be repainted.
+ *
+ * <br>Note that this is a <em>HINT</em>.
+ * </p><p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * </ul>
+ */
+ public static final int NO_REDRAW_RESIZE = 1 << 20;
+
+ /**
+ * Style constant for no paint event merging behavior (value is 1<<21).
+ *
+ * <br>Note that this is a <em>HINT</em>.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * </ul>
+ */
+ public static final int NO_MERGE_PAINTS = 1 << 21;
+
+ /**
+ * Style constant for preventing child radio group behavior (value is 1<<22).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * <li><code>Menu</code></li>
+ * </ul>
+ */
+ public static final int NO_RADIO_GROUP = 1 << 22;
+
+ /**
+ * Style constant for left to right orientation (value is 1<<25).
+ * <p>
+ * When orientation is not explicitly specified, orientation is
+ * inherited. This means that children will be assigned the
+ * orientation of their parent. To override this behavior and
+ * force an orientation for a child, explicitly set the orientation
+ * of the child when that child is created.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * <li><code>Menu</code></li>
+ * <li><code>GC</code></li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+ public static final int LEFT_TO_RIGHT = 1 << 25;
+
+ /**
+ * Style constant for right to left orientation (value is 1<<26).
+ * <p>
+ * When orientation is not explicitly specified, orientation is
+ * inherited. This means that children will be assigned the
+ * orientation of their parent. To override this behavior and
+ * force an orientation for a child, explicitly set the orientation
+ * of the child when that child is created.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * <li><code>Menu</code></li>
+ * <li><code>GC</code></li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+ public static final int RIGHT_TO_LEFT = 1 << 26;
+
+ /**
+ * Style constant to indicate coordinate mirroring (value is 1<<27).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * <li><code>Menu</code></li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+ public static final int MIRRORED = 1 << 27;
+
+ /**
+ * Style constant to allow embedding (value is 1<<24).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+ public static final int EMBEDDED = 1 << 24;
+
+ /**
+ * Style constant to allow virtual data (value is 1<<28).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+ public static final int VIRTUAL = 1 << 28;
+
+ /**
+ * Style constant to indicate double buffering (value is 1<<29).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+ public static final int DOUBLE_BUFFERED = 1 << 29;
+
+ /**
+ * Style constant for transparent behavior (value is 1<<30).
+ * <p>
+ * By default, before a widget paints, the client area is filled with the current background.
+ * When this style is specified, the background is not filled and widgets that are obscured
+ * will draw through.
+ * </p><p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ *
+ * WARNING: THIS API IS UNDER CONSTRUCTION AND SHOULD NOT BE USED
+ */
+ public static final int TRANSPARENT = 1 << 30;
+
+ /**
+ * Style constant to indicate base text direction (value is 1<<31).
+ * <p>
+ * When the bit is set, text direction mismatches the widget orientation.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * </ul>
+ *
+ * @see org.eclipse.swt.widgets.Control#setTextDirection(int)
+ * @see org.eclipse.swt.widgets.Control#getTextDirection()
+ *
+ * @since 3.102
+ */
+ public static final int FLIP_TEXT_DIRECTION = 1 << 31;
+
+ /**
+ * A bit mask to indicate Bidi "auto" text direction.
+ * <p>
+ * When the bit is set, text direction is derived from the direction of the
+ * first strong Bidi character.
+ * </p>
+ * <br>Note that this is a <em>HINT</em> and it works on Windows only.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * <li><code>TextLayout</code></li>
+ * </ul>
+ *
+ * @see org.eclipse.swt.widgets.Control#setTextDirection(int)
+ * @see org.eclipse.swt.graphics.TextLayout#setTextDirection(int)
+ *
+ * @since 3.105
+ */
+ public static final int AUTO_TEXT_DIRECTION = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT;
+
+ /**
+ * Style constant for align up behavior (value is 1<<7,
+ * since align UP and align TOP are considered the same).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code> with <code>ARROW</code> style</li>
+ * <li><code>Tracker</code></li>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * </ul>
+ */
+ public static final int UP = 1 << 7;
+
+ /**
+ * Style constant to indicate single underline (value is 0).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int UNDERLINE_SINGLE = 0;
+
+ /**
+ * Style constant to indicate double underline (value is 1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int UNDERLINE_DOUBLE = 1;
+
+ /**
+ * Style constant to indicate error underline (value is 2).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int UNDERLINE_ERROR = 2;
+
+ /**
+ * Style constant to indicate squiggle underline (value is 3).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int UNDERLINE_SQUIGGLE = 3;
+
+ /**
+ * Style constant to indicate link underline (value is 0).
+ * <p>
+ * If the text color or the underline color are not set in the range
+ * the usage of <code>UNDERLINE_LINK</code> will change these colors
+ * to the preferred link color of the platform.<br>
+ * Note that clients that use this style, such as <code>StyledText</code>,
+ * will include code to track the mouse and change the cursor to the hand
+ * cursor when mouse is over the link.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.5
+ */
+ public static final int UNDERLINE_LINK = 4;
+
+ /**
+ * Style constant to indicate solid border (value is 1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int BORDER_SOLID = 1;
+
+ /**
+ * Style constant to indicate dashed border (value is 2).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int BORDER_DASH = 2;
+
+ /**
+ * Style constant to indicate dotted border (value is 4).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextStyle</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int BORDER_DOT = 4;
+
+ /**
+ * Style constant for align top behavior (value is 1<<7,
+ * since align UP and align TOP are considered the same).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
+ * </ul>
+ */
+ public static final int TOP = UP;
+
+ /**
+ * Style constant for align down behavior (value is 1<<10,
+ * since align DOWN and align BOTTOM are considered the same).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code> with <code>ARROW</code> style</li>
+ * <li><code>Tracker</code></li>
+ * <li><code>Table</code></li>
+ * <li><code>Tree</code></li>
+ * </ul>
+ */
+ public static final int DOWN = 1 << 10;
+
+ /**
+ * Style constant for align bottom behavior (value is 1<<10,
+ * since align DOWN and align BOTTOM are considered the same).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
+ * <li><code>TabFolder</code></li>
+ * </ul>
+ */
+ public static final int BOTTOM = DOWN;
+
+ /**
+ * Style constant for leading alignment (value is 1<<14).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>Label</code></li>
+ * <li><code>Text</code></li>
+ * <li><code>TableColumn</code></li>
+ * <li><code>TreeColumn</code></li>
+ * <li><code>Tracker</code></li>
+ * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+ public static final int LEAD = 1 << 14;
+
+ /**
+ * Style constant for align left behavior (value is 1<<14).
+ * This is a synonym for {@link #LEAD} (value is 1<<14). Newer
+ * applications should use {@link #LEAD} instead of {@link #LEFT} to make code more
+ * understandable on right-to-left platforms.
+ * <p>
+ * This constant can also be used to representing the left keyboard
+ * location during a key event.
+ * </p>
+ */
+ public static final int LEFT = LEAD;
+
+ /**
+ * Style constant for trailing alignment (value is 1<<17).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>Label</code></li>
+ * <li><code>Text</code></li>
+ * <li><code>TableColumn</code></li>
+ * <li><code>TreeColumn</code></li>
+ * <li><code>Tracker</code></li>
+ * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+ public static final int TRAIL = 1 << 17;
+
+ /**
+ * Style constant for align right behavior (value is 1<<17).
+ * This is a synonym for {@link #TRAIL} (value is 1<<17). Newer
+ * applications should use {@link #TRAIL} instead of {@link #RIGHT} to make code more
+ * understandable on right-to-left platforms.
+ * <p>
+ * This constant can also be used to representing the right keyboard
+ * location during a key event.
+ * </p>
+ */
+ public static final int RIGHT = TRAIL;
+
+ /**
+ * Style constant for align center behavior (value is 1<<24).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Button</code></li>
+ * <li><code>Label</code></li>
+ * <li><code>TableColumn</code></li>
+ * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
+ * </ul>
+ */
+ public static final int CENTER = 1 << 24;
+
+ /**
+ * Style constant for horizontal alignment or orientation behavior (value is 1<<8).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Label</code></li>
+ * <li><code>ProgressBar</code></li>
+ * <li><code>Sash</code></li>
+ * <li><code>Scale</code></li>
+ * <li><code>ScrollBar</code></li>
+ * <li><code>Slider</code></li>
+ * <li><code>ToolBar</code></li>
+ * <li><code>FillLayout</code> type</li>
+ * <li><code>RowLayout</code> type</li>
+ * </ul>
+ */
+ public static final int HORIZONTAL = 1 << 8;
+
+ /**
+ * Style constant for vertical alignment or orientation behavior (value is 1<<9).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Label</code></li>
+ * <li><code>ProgressBar</code></li>
+ * <li><code>Sash</code></li>
+ * <li><code>Scale</code></li>
+ * <li><code>ScrollBar</code></li>
+ * <li><code>Slider</code></li>
+ * <li><code>ToolBar</code></li>
+ * <li><code>CoolBar</code></li>
+ * <li><code>FillLayout</code> type</li>
+ * <li><code>RowLayout</code> type</li>
+ * </ul>
+ */
+ public static final int VERTICAL = 1 << 9;
+
+ /**
+ * Style constant for date display (value is 1<<5).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int DATE = 1 << 5;
+
+ /**
+ * Style constant for time display (value is 1<<7).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int TIME = 1 << 7;
+
+ /**
+ * Style constant for calendar display (value is 1<<10).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int CALENDAR = 1 << 10;
+
+ /**
+ * Style constant for displaying week numbers in the calendar.
+ * <br>Note that this is a <em>HINT</em> and is supported on Windows & GTK platforms only.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.108
+ */
+ public static final int CALENDAR_WEEKNUMBERS = 1 << 14;
+
+ /**
+ * Style constant for short date/time format (value is 1<<15).
+ * <p>
+ * A short date displays the month and year.
+ * A short time displays hours and minutes.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int SHORT = 1 << 15;
+
+ /**
+ * Style constant for medium date/time format (value is 1<<16).
+ * <p>
+ * A medium date displays the day, month and year.
+ * A medium time displays hours, minutes, and seconds.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int MEDIUM = 1 << 16;
+
+ /**
+ * Style constant for long date/time format (value is 1<<28).
+ * <p>
+ * A long date displays the day, month and year.
+ * A long time displays hours, minutes, and seconds.
+ * The day and month names may be displayed.
+ * <br>Note that this is a <em>HINT</em>.
+ * </p>
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>DateTime</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ */
+ public static final int LONG = 1 << 28;
+
+ /**
+ * Style constant specifying that a Browser should use a Mozilla GRE
+ * for rendering its content (value is 1<<15).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Browser</code></li>
+ * </ul>
+ *
+ * @since 3.3
+ * @deprecated This style is deprecated and will be removed in the future.
+ * XULRunner as a browser renderer is no longer supported. Use
+ * <code>SWT.WEBKIT</code> or <code>SWT.NONE</code> instead.
+ */
+ @Deprecated
+ public static final int MOZILLA = 1 << 15;
+
+ /**
+ * Style constant specifying that a Browser should use WebKit
+ * for rendering its content (value is 1<<16).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Browser</code></li>
+ * </ul>
+ *
+ * @since 3.7
+ */
+ public static final int WEBKIT = 1 << 16;
+
+ /**
+ * Style constant for balloon behavior (value is 1<<12).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>ToolTip</code></li>
+ * </ul>
+ *
+ * @since 3.2
+ */
+ public static final int BALLOON = 1 << 12;
+
+ /**
+ * Style constant for vertical alignment or orientation behavior (value is 1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>GridLayout</code> type</li>
+ * </ul>
+ */
+ public static final int BEGINNING = 1;
+
+ /**
+ * Style constant for vertical alignment or orientation behavior (value is 4).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>GridLayout</code> type</li>
+ * </ul>
+ */
+ public static final int FILL = 4;
+
+ /**
+ * Input Method Editor style constant for double byte
+ * input behavior (value is 1<<1).
+ */
+ public static final int DBCS = 1 << 1;
+
+ /**
+ * Input Method Editor style constant for alpha
+ * input behavior (value is 1<<2).
+ */
+ public static final int ALPHA = 1 << 2;
+
+ /**
+ * Input Method Editor style constant for native
+ * input behavior (value is 1<<3).
+ */
+ public static final int NATIVE = 1 << 3;
+
+ /**
+ * Input Method Editor style constant for phonetic
+ * input behavior (value is 1<<4).
+ */
+ public static final int PHONETIC = 1 << 4;
+
+ /**
+ * Input Method Editor style constant for romanicized
+ * input behavior (value is 1<<5).
+ */
+ public static final int ROMAN = 1 << 5;
+
+ /**
+ * ASCII character convenience constant for the backspace character
+ * (value is the <code>char</code> '\b').
+ */
+ public static final char BS = '\b';
+
+ /**
+ * ASCII character convenience constant for the carriage return character
+ * (value is the <code>char</code> '\r').
+ */
+ public static final char CR = '\r';
+
+ /**
+ * ASCII character convenience constant for the delete character
+ * (value is the <code>char</code> with value 127).
+ */
+ public static final char DEL = 0x7F;
+
+ /**
+ * ASCII character convenience constant for the escape character
+ * (value is the <code>char</code> with value 27).
+ */
+ public static final char ESC = 0x1B;
+
+ /**
+ * ASCII character convenience constant for the line feed character
+ * (value is the <code>char</code> '\n').
+ */
+ public static final char LF = '\n';
+
+ /**
+ * ASCII character convenience constant for the tab character
+ * (value is the <code>char</code> '\t').
+ *
+ * @since 2.1
+ */
+ public static final char TAB = '\t';
+
+ /**
+ * ASCII character convenience constant for the space character
+ * (value is the <code>char</code> ' ').
+ *
+ * @since 3.7
+ */
+ public static final char SPACE = ' ';
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the ALT_GR key
+ * was pushed on the keyboard when the event was generated
+ * (value is 1 << 15).
+ *
+ * @since 3.108
+ */
+ public static final int ALT_GR = 1 << 15;
+
+ /**
+ * keyboard and/or mouse event mask indicating that the ALT key
+ * was pushed on the keyboard when the event was generated
+ * (value is 1<<16).
+ */
+ public static final int ALT = 1 << 16;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the SHIFT key
+ * was pushed on the keyboard when the event was generated
+ * (value is 1<<17).
+ */
+ public static final int SHIFT = 1 << 17;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the CTRL key
+ * was pushed on the keyboard when the event was generated
+ * (value is 1<<18).
+ */
+ public static final int CTRL = 1 << 18;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the CTRL key
+ * was pushed on the keyboard when the event was generated. This
+ * is a synonym for CTRL (value is 1<<18).
+ */
+ public static final int CONTROL = CTRL;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the COMMAND key
+ * was pushed on the keyboard when the event was generated
+ * (value is 1<<22).
+ *
+ * @since 2.1
+ */
+ public static final int COMMAND = 1 << 22;
+
+ /**
+ * Keyboard and/or mouse event mask indicating all possible
+ * keyboard modifiers.
+ *
+ * To allow for the future, this mask is intended to be used in
+ * place of code that references each individual keyboard mask.
+ * For example, the following expression will determine whether
+ * any modifier is pressed and will continue to work as new modifier
+ * masks are added.
+ *
+ * <code>(stateMask & SWT.MODIFIER_MASK) != 0</code>.
+ *
+ * @since 2.1
+ */
+ public static final int MODIFIER_MASK;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that mouse button one (usually 'left')
+ * was pushed when the event was generated. (value is 1<<19).
+ */
+ public static final int BUTTON1 = 1 << 19;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that mouse button two (usually 'middle')
+ * was pushed when the event was generated. (value is 1<<20).
+ */
+ public static final int BUTTON2 = 1 << 20;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that mouse button three (usually 'right')
+ * was pushed when the event was generated. (value is 1<<21).
+ */
+ public static final int BUTTON3 = 1 << 21;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that mouse button four
+ * was pushed when the event was generated. (value is 1<<23).
+ *
+ * @since 3.1
+ */
+ public static final int BUTTON4 = 1 << 23;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that mouse button five
+ * was pushed when the event was generated. (value is 1<<25).
+ *
+ * @since 3.1
+ */
+ public static final int BUTTON5 = 1 << 25;
+
+ /**
+ * Keyboard and/or mouse event mask indicating all possible
+ * mouse buttons.
+ *
+ * To allow for the future, this mask is intended to be used
+ * in place of code that references each individual button mask.
+ * For example, the following expression will determine whether
+ * any button is pressed and will continue to work as new button
+ * masks are added.
+ *
+ * <code>(stateMask & SWT.BUTTON_MASK) != 0</code>.
+ *
+ * @since 2.1
+ */
+ public static final int BUTTON_MASK;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the MOD1 key
+ * was pushed on the keyboard when the event was generated.
+ *
+ * This is the primary keyboard modifier for the platform.
+ * <p>
+ * {@link #CTRL} on most platforms ({@link #COMMAND} on the Mac).
+ * </p>
+ *
+ * @since 2.1
+ */
+ public static final int MOD1;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the MOD2 key
+ * was pushed on the keyboard when the event was generated.
+ *
+ * This is the secondary keyboard modifier for the platform.
+ * <p>
+ * {@link #SHIFT} on most platforms.
+ * </p>
+ *
+ * @since 2.1
+ */
+ public static final int MOD2;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the MOD3 key
+ * was pushed on the keyboard when the event was generated.
+ * <p>
+ * {@link #ALT} on most platforms.
+ * </p>
+ *
+ * @since 2.1
+ */
+ public static final int MOD3;
+
+ /**
+ * Keyboard and/or mouse event mask indicating that the MOD4 key
+ * was pushed on the keyboard when the event was generated.
+ * <p>
+ * Undefined on most platforms ({@link #CTRL} on the Mac).
+ * </p>
+ *
+ * @since 2.1
+ */
+ public static final int MOD4;
+
+ /**
+ * Constants to indicate line scrolling (value is 1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+ public static final int SCROLL_LINE = 1;
+
+ /**
+ * Constants to indicate page scrolling (value is 2).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Control</code></li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+ public static final int SCROLL_PAGE = 2;
+
+ /**
+ * Accelerator constant used to differentiate a key code from a
+ * unicode character.
+ *
+ * If this bit is set, then the key stroke
+ * portion of an accelerator represents a key code. If this bit
+ * is not set, then the key stroke portion of an accelerator is
+ * a unicode character.
+ *
+ * The following expression is false:
+ *
+ * <code>((SWT.MOD1 | SWT.MOD2 | 'T') & SWT.KEYCODE_BIT) != 0</code>.
+ *
+ * The following expression is true:
+ *
+ * <code>((SWT.MOD3 | SWT.F2) & SWT.KEYCODE_BIT) != 0</code>.
+ *
+ * (value is (1<<24))
+ *
+ * @since 2.1
+ */
+ public static final int KEYCODE_BIT = (1 << 24);
+
+ /**
+ * Accelerator constant used to extract the key stroke portion of
+ * an accelerator.
+ *
+ * The key stroke may be a key code or a unicode
+ * value. If the key stroke is a key code <code>KEYCODE_BIT</code>
+ * will be set.
+ *
+ * @since 2.1
+ */
+ public static final int KEY_MASK = KEYCODE_BIT + 0xFFFF;
+
+ /**
+ * Keyboard event constant representing the UP ARROW key
+ * (value is (1<<24)+1).
+ */
+ public static final int ARROW_UP = KEYCODE_BIT + 1;
+
+ /**
+ * Keyboard event constant representing the DOWN ARROW key
+ * (value is (1<<24)+2).
+ */
+ public static final int ARROW_DOWN = KEYCODE_BIT + 2;
+
+ /**
+ * Keyboard event constant representing the LEFT ARROW key
+ * (value is (1<<24)+3).
+ */
+ public static final int ARROW_LEFT = KEYCODE_BIT + 3;
+
+ /**
+ * Keyboard event constant representing the RIGHT ARROW key
+ * (value is (1<<24)+4).
+ */
+ public static final int ARROW_RIGHT = KEYCODE_BIT + 4;
+
+ /**
+ * Keyboard event constant representing the PAGE UP key
+ * (value is (1<<24)+5).
+ */
+ public static final int PAGE_UP = KEYCODE_BIT + 5;
+
+ /**
+ * Keyboard event constant representing the PAGE DOWN key
+ * (value is (1<<24)+6).
+ */
+ public static final int PAGE_DOWN = KEYCODE_BIT + 6;
+
+ /**
+ * Keyboard event constant representing the HOME key
+ * (value is (1<<24)+7).
+ */
+ public static final int HOME = KEYCODE_BIT + 7;
+
+ /**
+ * Keyboard event constant representing the END key
+ * (value is (1<<24)+8).
+ */
+ public static final int END = KEYCODE_BIT + 8;
+
+ /**
+ * Keyboard event constant representing the INSERT key
+ * (value is (1<<24)+9).
+ */
+ public static final int INSERT = KEYCODE_BIT + 9;
+
+ /**
+ * Keyboard event constant representing the F1 key
+ * (value is (1<<24)+10).
+ */
+ public static final int F1 = KEYCODE_BIT + 10;
+
+ /**
+ * Keyboard event constant representing the F2 key
+ * (value is (1<<24)+11).
+ */
+ public static final int F2 = KEYCODE_BIT + 11;
+
+ /**
+ * Keyboard event constant representing the F3 key
+ * (value is (1<<24)+12).
+ */
+ public static final int F3 = KEYCODE_BIT + 12;
+
+ /**
+ * Keyboard event constant representing the F4 key
+ * (value is (1<<24)+13).
+ */
+ public static final int F4 = KEYCODE_BIT + 13;
+
+ /**
+ * Keyboard event constant representing the F5 key
+ * (value is (1<<24)+14).
+ */
+ public static final int F5 = KEYCODE_BIT + 14;
+
+ /**
+ * Keyboard event constant representing the F6 key
+ * (value is (1<<24)+15).
+ */
+ public static final int F6 = KEYCODE_BIT + 15;
+
+ /**
+ * Keyboard event constant representing the F7 key
+ * (value is (1<<24)+16).
+ */
+ public static final int F7 = KEYCODE_BIT + 16;
+
+ /**
+ * Keyboard event constant representing the F8 key
+ * (value is (1<<24)+17).
+ */
+ public static final int F8 = KEYCODE_BIT + 17;
+
+ /**
+ * Keyboard event constant representing the F9 key
+ * (value is (1<<24)+18).
+ */
+ public static final int F9 = KEYCODE_BIT + 18;
+
+ /**
+ * Keyboard event constant representing the F10 key
+ * (value is (1<<24)+19).
+ */
+ public static final int F10 = KEYCODE_BIT + 19;
+
+ /**
+ * Keyboard event constant representing the F11 key
+ * (value is (1<<24)+20).
+ */
+ public static final int F11 = KEYCODE_BIT + 20;
+
+ /**
+ * Keyboard event constant representing the F12 key
+ * (value is (1<<24)+21).
+ */
+ public static final int F12 = KEYCODE_BIT + 21;
+
+ /**
+ * Keyboard event constant representing the F13 key
+ * (value is (1<<24)+22).
+ *
+ * @since 3.0
+ */
+ public static final int F13 = KEYCODE_BIT + 22;
+
+ /**
+ * Keyboard event constant representing the F14 key
+ * (value is (1<<24)+23).
+ *
+ * @since 3.0
+ */
+ public static final int F14 = KEYCODE_BIT + 23;
+
+ /**
+ * Keyboard event constant representing the F15 key
+ * (value is (1<<24)+24).
+ *
+ * @since 3.0
+ */
+ public static final int F15 = KEYCODE_BIT + 24;
+
+ /**
+ * Keyboard event constant representing the F16 key
+ * (value is (1<<25)+25).
+ *
+ * @since 3.6
+ */
+ public static final int F16 = KEYCODE_BIT + 25;
+
+
+ /**
+ * Keyboard event constant representing the F17 key
+ * (value is (1<<26)+26).
+ *
+ * @since 3.6
+ */
+ public static final int F17 = KEYCODE_BIT + 26;
+
+
+ /**
+ * Keyboard event constant representing the F18 key
+ * (value is (1<<27)+27).
+ *
+ * @since 3.6
+ */
+ public static final int F18 = KEYCODE_BIT + 27;
+
+
+ /**
+ * Keyboard event constant representing the F19 key
+ * (value is (1<<28)+28).
+ *
+ * @since 3.6
+ */
+ public static final int F19 = KEYCODE_BIT + 28;
+
+ /**
+ * Keyboard event constant representing the F20 key
+ * (value is (1<<29)+29).
+ *
+ * @since 3.6
+ */
+ public static final int F20 = KEYCODE_BIT + 29;
+
+ /**
+ * Keyboard event constant representing the keypad location.
+ * (value is 1<<1).
+ *
+ * @since 3.6
+ */
+ public static final int KEYPAD = 1 << 1;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad multiply key (value is (1<<24)+42).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_MULTIPLY = KEYCODE_BIT + 42;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad add key (value is (1<<24)+43).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_ADD = KEYCODE_BIT + 43;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad subtract key (value is (1<<24)+45).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_SUBTRACT = KEYCODE_BIT + 45;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad decimal key (value is (1<<24)+46).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_DECIMAL = KEYCODE_BIT + 46;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad divide key (value is (1<<24)+47).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_DIVIDE = KEYCODE_BIT + 47;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad zero key (value is (1<<24)+48).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_0 = KEYCODE_BIT + 48;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad one key (value is (1<<24)+49).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_1 = KEYCODE_BIT + 49;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad two key (value is (1<<24)+50).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_2 = KEYCODE_BIT + 50;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad three key (value is (1<<24)+51).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_3 = KEYCODE_BIT + 51;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad four key (value is (1<<24)+52).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_4 = KEYCODE_BIT + 52;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad five key (value is (1<<24)+53).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_5 = KEYCODE_BIT + 53;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad six key (value is (1<<24)+54).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_6 = KEYCODE_BIT + 54;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad seven key (value is (1<<24)+55).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_7 = KEYCODE_BIT + 55;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad eight key (value is (1<<24)+56).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_8 = KEYCODE_BIT + 56;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad nine key (value is (1<<24)+57).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_9 = KEYCODE_BIT + 57;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad equal key (value is (1<<24)+61).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_EQUAL = KEYCODE_BIT + 61;
+
+ /**
+ * Keyboard event constant representing the numeric key
+ * pad enter key (value is (1<<24)+80).
+ *
+ * @since 3.0
+ */
+ public static final int KEYPAD_CR = KEYCODE_BIT + 80;
+
+ /**
+ * Keyboard event constant representing the help
+ * key (value is (1<<24)+81).
+ *
+ * NOTE: The HELP key maps to the key labeled "help",
+ * not "F1". If your keyboard does not have a HELP key,
+ * you will never see this key press. To listen for
+ * help on a control, use SWT.Help.
+ *
+ * @since 3.0
+ *
+ * @see SWT#Help
+ */
+ public static final int HELP = KEYCODE_BIT + 81;
+
+ /**
+ * Keyboard event constant representing the caps
+ * lock key (value is (1<<24)+82).
+ *
+ * @since 3.0
+ */
+ public static final int CAPS_LOCK = KEYCODE_BIT + 82;
+
+ /**
+ * Keyboard event constant representing the num
+ * lock key (value is (1<<24)+83).
+ *
+ * @since 3.0
+ */
+ public static final int NUM_LOCK = KEYCODE_BIT + 83;
+
+ /**
+ * Keyboard event constant representing the scroll
+ * lock key (value is (1<<24)+84).
+ *
+ * @since 3.0
+ */
+ public static final int SCROLL_LOCK = KEYCODE_BIT + 84;
+
+ /**
+ * Keyboard event constant representing the pause
+ * key (value is (1<<24)+85).
+ *
+ * @since 3.0
+ */
+ public static final int PAUSE = KEYCODE_BIT + 85;
+
+ /**
+ * Keyboard event constant representing the break
+ * key (value is (1<<24)+86).
+ *
+ * @since 3.0
+ */
+ public static final int BREAK = KEYCODE_BIT + 86;
+
+ /**
+ * Keyboard event constant representing the print screen
+ * key (value is (1<<24)+87).
+ *
+ * @since 3.0
+ */
+ public static final int PRINT_SCREEN = KEYCODE_BIT + 87;
+
+ /**
+ * The <code>MessageBox</code> style constant for error icon
+ * behavior (value is 1).
+ */
+ public static final int ICON_ERROR = 1;
+
+ /**
+ * The <code>MessageBox</code> style constant for information icon
+ * behavior (value is 1<<1).
+ */
+ public static final int ICON_INFORMATION = 1 << 1;
+
+ /**
+ * The <code>MessageBox</code> style constant for question icon
+ * behavior (value is 1<<2).
+ */
+ public static final int ICON_QUESTION = 1 << 2;
+
+ /**
+ * The <code>MessageBox</code> style constant for warning icon
+ * behavior (value is 1<<3).
+ */
+ public static final int ICON_WARNING = 1 << 3;
+
+ /**
+ * The <code>MessageBox</code> style constant for "working" icon
+ * behavior (value is 1<<4).
+ */
+ public static final int ICON_WORKING = 1 << 4;
+
+ /**
+ * The style constant for "search" icon. This style constant is
+ * used with <code>Text</code> in combination with <code>SWT.SEARCH
+ * </code> (value is 1<<9).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Text</code></li>
+ * </ul>
+ *
+ * @see #SEARCH
+ * @see #ICON_CANCEL
+ *
+ * @since 3.5
+ */
+ public static final int ICON_SEARCH = 1 << 9;
+
+ /**
+ * The style constant for "cancel" icon. This style constant is
+ * used with <code>Text</code> in combination with <code>SWT.SEARCH
+ * </code> (value is 1<<8).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Text</code></li>
+ * </ul>
+ *
+ * @see #SEARCH
+ * @see #ICON_SEARCH
+ *
+ * @since 3.5
+ */
+ public static final int ICON_CANCEL = 1 << 8;
+
+
+ /**
+ * The <code>MessageBox</code> style constant for an OK button;
+ * valid combinations are OK, OK|CANCEL
+ * (value is 1<<5).
+ */
+ public static final int OK = 1 << 5;
+
+ /**
+ * The <code>MessageBox</code> style constant for YES button;
+ * valid combinations are YES|NO, YES|NO|CANCEL
+ * (value is 1<<6).
+ */
+ public static final int YES = 1 << 6;
+
+ /**
+ * The <code>MessageBox</code> style constant for NO button;
+ * valid combinations are YES|NO, YES|NO|CANCEL
+ * (value is 1<<7).
+ */
+ public static final int NO = 1 << 7;
+
+ /**
+ * The <code>MessageBox</code> style constant for a CANCEL button;
+ * valid combinations are OK|CANCEL, YES|NO|CANCEL, RETRY|CANCEL
+ * (value is 1<<8).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>MessageBox</code></li>
+ * </ul>
+ */
+ public static final int CANCEL = 1 << 8;
+
+ /**
+ * The <code>MessageBox</code> style constant for an ABORT button;
+ * the only valid combination is ABORT|RETRY|IGNORE
+ * (value is 1<<9).
+ */
+ public static final int ABORT = 1 << 9;
+
+ /**
+ * The <code>MessageBox</code> style constant for a RETRY button;
+ * valid combinations are ABORT|RETRY|IGNORE, RETRY|CANCEL
+ * (value is 1<<10).
+ */
+ public static final int RETRY = 1 << 10;
+
+ /**
+ * The <code>MessageBox</code> style constant for an IGNORE button;
+ * the only valid combination is ABORT|RETRY|IGNORE
+ * (value is 1<<11).
+ */
+ public static final int IGNORE = 1 << 11;
+
+ /**
+ * The <code>FileDialog</code> style constant for open file dialog behavior
+ * (value is 1<<12).
+ */
+ public static final int OPEN = 1 << 12;
+
+ /**
+ * The <code>FileDialog</code> style constant for save file dialog behavior
+ * (value is 1<<13).
+ */
+ public static final int SAVE = 1 << 13;
+
+ /**
+ * The <code>Composite</code> constant to indicate that
+ * an attribute (such as background) is not inherited
+ * by the children (value is 0).
+ *
+ * @since 3.2
+ */
+ public static final int INHERIT_NONE = 0;
+
+ /**
+ * The <code>Composite</code> constant to indicate that
+ * an attribute (such as background) is inherited by
+ * children who choose this value as their "default"
+ * (value is 1). For example, a label child will
+ * typically choose to inherit the background color
+ * of a composite while a list or table will not.
+ *
+ * @since 3.2
+ */
+ public static final int INHERIT_DEFAULT = 1;
+
+ /**
+ * The <code>Composite</code> constant to indicate that
+ * an attribute (such as background) is inherited by
+ * all children.
+ *
+ * @since 3.2
+ */
+ public static final int INHERIT_FORCE = 2;
+
+ /**
+ * Default color white (value is 1).
+ */
+ public static final int COLOR_WHITE = 1;
+
+ /**
+ * Default color black (value is 2).
+ */
+ public static final int COLOR_BLACK = 2;
+
+ /**
+ * Default color red (value is 3).
+ */
+ public static final int COLOR_RED = 3;
+
+ /**
+ * Default color dark red (value is 4).
+ */
+ public static final int COLOR_DARK_RED = 4;
+
+ /**
+ * Default color green (value is 5).
+ */
+ public static final int COLOR_GREEN = 5;
+
+ /**
+ * Default color dark green (value is 6).
+ */
+ public static final int COLOR_DARK_GREEN = 6;
+
+ /**
+ * Default color yellow (value is 7).
+ */
+ public static final int COLOR_YELLOW = 7;
+
+ /**
+ * Default color dark yellow (value is 8).
+ */
+ public static final int COLOR_DARK_YELLOW = 8;
+
+ /**
+ * Default color blue (value is 9).
+ */
+ public static final int COLOR_BLUE = 9;
+
+ /**
+ * Default color dark blue (value is 10).
+ */
+ public static final int COLOR_DARK_BLUE = 10;
+
+ /**
+ * Default color magenta (value is 11).
+ */
+ public static final int COLOR_MAGENTA = 11;
+
+ /**
+ * Default color dark magenta (value is 12).
+ */
+ public static final int COLOR_DARK_MAGENTA = 12;
+
+ /**
+ * Default color cyan (value is 13).
+ */
+ public static final int COLOR_CYAN = 13;
+
+ /**
+ * Default color dark cyan (value is 14).
+ */
+ public static final int COLOR_DARK_CYAN = 14;
+
+ /**
+ * Default color gray (value is 15).
+ */
+ public static final int COLOR_GRAY = 15;
+
+ /**
+ * Default color dark gray (value is 16).
+ */
+ public static final int COLOR_DARK_GRAY = 16;
+
+ /*
+ * System Colors
+ *
+ * Dealing with system colors is an area where there are
+ * many platform differences. On some platforms, system
+ * colors can change dynamically while the program is
+ * running. On other platforms, system colors can be
+ * changed for all instances of a particular widget.
+ * Therefore, the only truly portable method to obtain
+ * a widget color query is to query the color from an
+ * instance of the widget.
+ *
+ * It is expected that the list of supported colors
+ * will grow over time.
+ */
+
+ /**
+ * System color used to paint dark shadow areas (value is 17).
+ */
+ public static final int COLOR_WIDGET_DARK_SHADOW = 17;
+
+ /**
+ * System color used to paint normal shadow areas (value is 18).
+ */
+ public static final int COLOR_WIDGET_NORMAL_SHADOW = 18;
+
+ /**
+ * System color used to paint light shadow areas (value is 19).
+ */
+ public static final int COLOR_WIDGET_LIGHT_SHADOW = 19;
+
+ /**
+ * System color used to paint highlight shadow areas (value is 20).
+ */
+ public static final int COLOR_WIDGET_HIGHLIGHT_SHADOW = 20;
+
+ /**
+ * System color used to paint foreground areas (value is 21).
+ */
+ public static final int COLOR_WIDGET_FOREGROUND = 21;
+
+ /**
+ * System color used to paint background areas (value is 22).
+ */
+ public static final int COLOR_WIDGET_BACKGROUND = 22;
+
+ /**
+ * System color used to paint border areas (value is 23).
+ */
+ public static final int COLOR_WIDGET_BORDER = 23;
+
+ /**
+ * System color used to paint list foreground areas (value is 24).
+ */
+ public static final int COLOR_LIST_FOREGROUND = 24;
+
+ /**
+ * System color used to paint list background areas (value is 25).
+ */
+ public static final int COLOR_LIST_BACKGROUND = 25;
+
+ /**
+ * System color used to paint list selection background areas (value is 26).
+ */
+ public static final int COLOR_LIST_SELECTION = 26;
+
+ /**
+ * System color used to paint list selected text (value is 27).
+ */
+ public static final int COLOR_LIST_SELECTION_TEXT = 27;
+
+ /**
+ * System color used to paint tooltip text (value is 28).
+ */
+ public static final int COLOR_INFO_FOREGROUND = 28;
+
+ /**
+ * System color used to paint tooltip background areas (value is 29).
+ */
+ public static final int COLOR_INFO_BACKGROUND = 29;
+
+ /**
+ * System color used to paint title text (value is 30).
+ */
+ public static final int COLOR_TITLE_FOREGROUND = 30;
+
+ /**
+ * System color used to paint title background areas (value is 31).
+ */
+ public static final int COLOR_TITLE_BACKGROUND = 31;
+
+ /**
+ * System color used to paint title background gradient (value is 32).
+ */
+ public static final int COLOR_TITLE_BACKGROUND_GRADIENT = 32;
+
+ /**
+ * System color used to paint inactive title text (value is 33).
+ */
+ public static final int COLOR_TITLE_INACTIVE_FOREGROUND = 33;
+
+ /**
+ * System color used to paint inactive title background areas (value is 34).
+ */
+ public static final int COLOR_TITLE_INACTIVE_BACKGROUND = 34;
+
+ /**
+ * System color used to paint inactive title background gradient (value is 35).
+ */
+ public static final int COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT = 35;
+
+ /**
+ * System color used to paint link text (value is 36).
+ *
+ * @since 3.102
+ */
+ public static final int COLOR_LINK_FOREGROUND = 36;
+
+ /**
+ * System color used to paint with alpha 0 (value is 37).
+ * <p>
+ * This pseudo-color can be used to set a transparent background on SWT
+ * controls. <br>
+ * Note that this is a <em>HINT</em> and may be overridden by the platform.
+ * For example:
+ * <ul>
+ * <li>{@link org.eclipse.swt.widgets.Combo Combo},
+ * {@link org.eclipse.swt.widgets.List List} and
+ * {@link org.eclipse.swt.widgets.Tree Tree} support transparent background
+ * on GTK3 and Windows only.</li>
+ * <li>{@link org.eclipse.swt.widgets.Text Text} supports transparent
+ * background on Windows only whereas {@link org.eclipse.swt.widgets.Table
+ * Table} supports transparent background on GTK3 only.</li>
+ * </ul>
+ *
+ * @since 3.104
+ */
+ public static final int COLOR_TRANSPARENT = 37;
+
+ /**
+ * System color used to paint disabled text background areas (value is 38).
+ *
+ * @since 3.112
+ */
+ public static final int COLOR_TEXT_DISABLED_BACKGROUND = 38;
+
+ /**
+ * System color used to paint disabled foreground areas (value is 39).
+ *
+ * @since 3.112
+ */
+ public static final int COLOR_WIDGET_DISABLED_FOREGROUND = 39;
+
+ /**
+ * Draw constant indicating whether the drawing operation
+ * should fill the background (value is 1<<0).
+ */
+ public static final int DRAW_TRANSPARENT = 1 << 0;
+
+ /**
+ * Draw constant indicating whether the string drawing operation
+ * should handle line-delimiters (value is 1<<1).
+ */
+ public static final int DRAW_DELIMITER = 1 << 1;
+
+ /**
+ * Draw constant indicating whether the string drawing operation
+ * should expand TAB characters (value is 1<<2).
+ */
+ public static final int DRAW_TAB = 1 << 2;
+
+ /**
+ * Draw constant indicating whether the string drawing operation
+ * should handle mnemonics (value is 1<<3).
+ */
+ public static final int DRAW_MNEMONIC = 1 << 3;
+
+
+ /**
+ * Selection constant indicating that a line delimiter should be
+ * drawn (value is 1<<17).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextLayout</code></li>
+ * </ul>
+ *
+ * @see #FULL_SELECTION
+ * @see #LAST_LINE_SELECTION
+ *
+ * @since 3.3
+ */
+ public static final int DELIMITER_SELECTION = 1 << 17;
+
+ /**
+ * Selection constant indicating that the last line is selected
+ * to the end and should be drawn using either a line delimiter
+ * or full line selection (value is 1<<20).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>TextLayout</code></li>
+ * </ul>
+ *
+ * @see #DELIMITER_SELECTION
+ * @see #FULL_SELECTION
+ *
+ * @since 3.3
+ */
+ public static final int LAST_LINE_SELECTION = 1 << 20;
+
+ /**
+ * SWT error constant indicating that no error number was specified
+ * (value is 1).
+ */
+ public static final int ERROR_UNSPECIFIED = 1;
+
+ /**
+ * SWT error constant indicating that no more handles for an
+ * operating system resource are available
+ * (value is 2).
+ */
+ public static final int ERROR_NO_HANDLES = 2;
+
+ /**
+ * SWT error constant indicating that no more callback resources are available
+ * (value is 3).
+ */
+ public static final int ERROR_NO_MORE_CALLBACKS = 3;
+
+ /**
+ * SWT error constant indicating that a null argument was passed in
+ * (value is 4).
+ */
+ public static final int ERROR_NULL_ARGUMENT = 4;
+
+ /**
+ * SWT error constant indicating that an invalid argument was passed in
+ * (value is 5).
+ */
+ public static final int ERROR_INVALID_ARGUMENT = 5;
+
+ /**
+ * SWT error constant indicating that a value was found to be
+ * outside the allowable range
+ * (value is 6).
+ */
+ public static final int ERROR_INVALID_RANGE = 6;
+
+ /**
+ * SWT error constant indicating that a value which can not be
+ * zero was found to be
+ * (value is 7).
+ */
+ public static final int ERROR_CANNOT_BE_ZERO = 7;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to provide the value of an item
+ * (value is 8).
+ */
+ public static final int ERROR_CANNOT_GET_ITEM = 8;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to provide the selection
+ * (value is 9).
+ */
+ public static final int ERROR_CANNOT_GET_SELECTION = 9;
+
+ /**
+ * SWT error constant indicating that the matrix is not invertible
+ * (value is 10).
+ *
+ * @since 3.1
+ */
+ public static final int ERROR_CANNOT_INVERT_MATRIX = 10;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to provide the height of an item
+ * (value is 11).
+ */
+ public static final int ERROR_CANNOT_GET_ITEM_HEIGHT = 11;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to provide the text of a widget
+ * (value is 12).
+ */
+ public static final int ERROR_CANNOT_GET_TEXT = 12;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to set the text of a widget
+ * (value is 13).
+ */
+ public static final int ERROR_CANNOT_SET_TEXT = 13;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to add an item
+ * (value is 14).
+ */
+ public static final int ERROR_ITEM_NOT_ADDED = 14;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to remove an item
+ * (value is 15).
+ */
+ public static final int ERROR_ITEM_NOT_REMOVED = 15;
+
+ /**
+ * SWT error constant indicating that the graphics library
+ * is not available
+ * (value is 16).
+ */
+ public static final int ERROR_NO_GRAPHICS_LIBRARY = 16;
+
+ /**
+ * SWT error constant indicating that a particular feature has
+ * not been implemented on this platform
+ * (value is 20).
+ */
+ public static final int ERROR_NOT_IMPLEMENTED = 20;
+
+ /**
+ * SWT error constant indicating that a menu which needed
+ * to have the drop down style had some other style instead
+ * (value is 21).
+ */
+ public static final int ERROR_MENU_NOT_DROP_DOWN = 21;
+
+ /**
+ * SWT error constant indicating that an attempt was made to
+ * invoke an SWT operation which can only be executed by the
+ * user-interface thread from some other thread
+ * (value is 22).
+ */
+ public static final int ERROR_THREAD_INVALID_ACCESS = 22;
+
+ /**
+ * SWT error constant indicating that an attempt was made to
+ * invoke an SWT operation using a widget which had already
+ * been disposed
+ * (value is 24).
+ */
+ public static final int ERROR_WIDGET_DISPOSED = 24;
+
+ /**
+ * SWT error constant indicating that a menu item which needed
+ * to have the cascade style had some other style instead
+ * (value is 27).
+ */
+ public static final int ERROR_MENUITEM_NOT_CASCADE = 27;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to set the selection of a widget
+ * (value is 28).
+ */
+ public static final int ERROR_CANNOT_SET_SELECTION = 28;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to set the menu
+ * (value is 29).
+ */
+ public static final int ERROR_CANNOT_SET_MENU = 29;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to set the enabled state
+ * (value is 30).
+ */
+ public static final int ERROR_CANNOT_SET_ENABLED = 30;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to provide enabled/disabled state information
+ * (value is 31).
+ */
+ public static final int ERROR_CANNOT_GET_ENABLED = 31;
+
+ /**
+ * SWT error constant indicating that a provided widget can
+ * not be used as a parent in the current operation
+ * (value is 32).
+ */
+ public static final int ERROR_INVALID_PARENT = 32;
+
+ /**
+ * SWT error constant indicating that a menu which needed
+ * to have the menu bar style had some other style instead
+ * (value is 33).
+ */
+ public static final int ERROR_MENU_NOT_BAR = 33;
+
+ /**
+ * SWT error constant indicating that the underlying operating
+ * system was unable to provide count information
+ * (value is 36).
+ */
+ public static final int ERROR_CANNOT_GET_COUNT = 36;
+
+ /**
+ * SWT error constant indicating that a menu which needed
+ * to have the pop up menu style had some other style instead
+ * (value is 37).
+ */
+ public static final int ERROR_MENU_NOT_POP_UP = 37;
+
+ /**
+ * SWT error constant indicating that a graphics operation
+ * was attempted with an image of an unsupported depth
+ * (value is 38).
+ */
+ public static final int ERROR_UNSUPPORTED_DEPTH = 38;
+
+ /**
+ * SWT error constant indicating that an input/output operation
+ * failed during the execution of an SWT operation
+ * (value is 39).
+ */
+ public static final int ERROR_IO = 39;
+
+ /**
+ * SWT error constant indicating that a graphics operation
+ * was attempted with an image having an invalid format
+ * (value is 40).
+ */
+ public static final int ERROR_INVALID_IMAGE = 40;
+
+ /**
+ * SWT error constant indicating that a graphics operation
+ * was attempted with an image having a valid but unsupported
+ * format
+ * (value is 42).
+ */
+ public static final int ERROR_UNSUPPORTED_FORMAT = 42;
+
+ /**
+ * SWT error constant indicating that an attempt was made
+ * to subclass an SWT widget class without implementing the
+ * <code>checkSubclass()</code> method
+ * (value is 43).
+ *
+ * For additional information see the comment in
+ * <code>Widget.checkSubclass()</code>.
+ *
+ * @see org.eclipse.swt.widgets.Widget#checkSubclass
+ */
+ public static final int ERROR_INVALID_SUBCLASS = 43;
+
+ /**
+ * SWT error constant indicating that an attempt was made to
+ * invoke an SWT operation using a graphics object which had
+ * already been disposed
+ * (value is 44).
+ */
+ public static final int ERROR_GRAPHIC_DISPOSED = 44;
+
+ /**
+ * SWT error constant indicating that an attempt was made to
+ * invoke an SWT operation using a device which had already
+ * been disposed
+ * (value is 45).
+ */
+ public static final int ERROR_DEVICE_DISPOSED = 45;
+
+ /**
+ * SWT error constant indicating that an exception happened
+ * when executing a runnable
+ * (value is 46).
+ */
+ public static final int ERROR_FAILED_EXEC = 46;
+
+ /**
+ * SWT error constant indicating that an unsatisfied link
+ * error occurred while attempting to load a library
+ * (value is 47).
+ *
+ * @since 3.1
+ */
+ public static final int ERROR_FAILED_LOAD_LIBRARY = 47;
+
+ /**
+ * SWT error constant indicating that a font is not valid
+ * (value is 48).
+ *
+ * @since 3.1
+ */
+ public static final int ERROR_INVALID_FONT = 48;
+
+ /**
+ * SWT error constant indicating that an attempt was made to
+ * use an BrowserFunction object which had already been disposed
+ * (value is 49).
+ *
+ * @since 3.5
+ */
+ public static final int ERROR_FUNCTION_DISPOSED = 49;
+
+ /**
+ * SWT error constant indicating that an exception happened
+ * when evaluating a javascript expression
+ * (value is 50).
+ *
+ * @since 3.5
+ */
+ public static final int ERROR_FAILED_EVALUATE = 50;
+
+ /**
+ * SWT error constant indicating that an invalid value was returned
+ * (value is 51).
+ *
+ * @since 3.5
+ */
+ public static final int ERROR_INVALID_RETURN_VALUE = 51;
+
+ /**
+ * Constant indicating that an image or operation is of type bitmap (value is 0).
+ */
+ public static final int BITMAP = 0;
+
+ /**
+ * Constant indicating that an image or operation is of type icon (value is 1).
+ */
+ public static final int ICON = 1;
+
+ /**
+ * The <code>Image</code> constructor argument indicating that
+ * the new image should be a copy of the image provided as
+ * an argument (value is 0).
+ */
+ public static final int IMAGE_COPY = 0;
+
+ /**
+ * The <code>Image</code> constructor argument indicating that
+ * the new image should have the appearance of a "disabled"
+ * (using the platform's rules for how this should look)
+ * copy of the image provided as an argument (value is 1).
+ */
+ public static final int IMAGE_DISABLE = 1;
+
+ /**
+ * The <code>Image</code> constructor argument indicating that
+ * the new image should have the appearance of a "gray scaled"
+ * copy of the image provided as an argument (value is 2).
+ */
+ public static final int IMAGE_GRAY = 2;
+
+ /**
+ * Constant to indicate an error state (value is 1).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>ProgressBar</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int ERROR = 1;
+
+ /**
+ * Constant to a indicate a paused state (value is 4).
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>ProgressBar</code></li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+ public static final int PAUSED = 1 << 2;
+
+ /**
+ * The font style constant indicating a normal weight, non-italic font
+ * (value is 0). This constant is also used with <code>ProgressBar</code>
+ * to indicate a normal state.
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>ProgressBar</code></li>
+ * </ul>
+ */
+ public static final int NORMAL = 0;
+
+ /**
+ * The font style constant indicating a bold weight font
+ * (value is 1<<0).
+ */
+ public static final int BOLD = 1 << 0;
+
+ /**
+ * The font style constant indicating an italic font
+ * (value is 1<<1).
+ */
+ public static final int ITALIC = 1 << 1;
+
+ /**
+ * System arrow cursor (value is 0).
+ */
+ public static final int CURSOR_ARROW = 0;
+
+ /**
+ * System wait cursor (value is 1).
+ */
+ public static final int CURSOR_WAIT = 1;
+
+ /**
+ * System cross hair cursor (value is 2).
+ */
+ public static final int CURSOR_CROSS = 2;
+
+ /**
+ * System app startup cursor (value is 3).
+ */
+ public static final int CURSOR_APPSTARTING = 3;
+
+ /**
+ * System help cursor (value is 4).
+ */
+ public static final int CURSOR_HELP = 4;
+
+ /**
+ * System resize all directions cursor (value is 5).
+ */
+ public static final int CURSOR_SIZEALL = 5;
+
+ /**
+ * System resize north-east-south-west cursor (value is 6).
+ */
+ public static final int CURSOR_SIZENESW = 6;
+
+ /**
+ * System resize north-south cursor (value is 7).
+ */
+ public static final int CURSOR_SIZENS = 7;
+
+ /**
+ * System resize north-west-south-east cursor (value is 8).
+ */
+ public static final int CURSOR_SIZENWSE = 8;
+
+ /**
+ * System resize west-east cursor (value is 9).
+ */
+ public static final int CURSOR_SIZEWE = 9;
+
+ /**
+ * System resize north cursor (value is 10).
+ */
+ public static final int CURSOR_SIZEN = 10;
+
+ /**
+ * System resize south cursor (value is 11).
+ */
+ public static final int CURSOR_SIZES = 11;
+
+ /**
+ * System resize east cursor (value is 12).
+ */
+ public static final int CURSOR_SIZEE = 12;
+
+ /**
+ * System resize west cursor (value is 13).
+ */
+ public static final int CURSOR_SIZEW = 13;
+
+ /**
+ * System resize north-east cursor (value is 14).
+ */
+ public static final int CURSOR_SIZENE = 14;
+
+ /**
+ * System resize south-east cursor (value is 15).
+ */
+ public static final int CURSOR_SIZESE = 15;
+
+ /**
+ * System resize south-west cursor (value is 16).
+ */
+ public static final int CURSOR_SIZESW = 16;
+
+ /**
+ * System resize north-west cursor (value is 17).
+ */
+ public static final int CURSOR_SIZENW = 17;
+
+ /**
+ * System up arrow cursor (value is 18).
+ */
+ public static final int CURSOR_UPARROW = 18;
+
+ /**
+ * System i-beam cursor (value is 19).
+ */
+ public static final int CURSOR_IBEAM = 19;
+
+ /**
+ * System "not allowed" cursor (value is 20).
+ */
+ public static final int CURSOR_NO = 20;
+
+ /**
+ * System hand cursor (value is 21).
+ */
+ public static final int CURSOR_HAND = 21;
+
+ /**
+ * Line drawing style for flat end caps (value is 1).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineCap(int)
+ * @see org.eclipse.swt.graphics.GC#getLineCap()
+ *
+ * @since 3.1
+ */
+ public static final int CAP_FLAT = 1;
+
+ /**
+ * Line drawing style for rounded end caps (value is 2).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineCap(int)
+ * @see org.eclipse.swt.graphics.GC#getLineCap()
+ *
+ * @since 3.1
+ */
+ public static final int CAP_ROUND = 2;
+
+ /**
+ * Line drawing style for square end caps (value is 3).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineCap(int)
+ * @see org.eclipse.swt.graphics.GC#getLineCap()
+ *
+ * @since 3.1
+ */
+ public static final int CAP_SQUARE = 3;
+
+ /**
+ * Line drawing style for miter joins (value is 1).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineJoin(int)
+ * @see org.eclipse.swt.graphics.GC#getLineJoin()
+ *
+ * @since 3.1
+ */
+ public static final int JOIN_MITER = 1;
+
+ /**
+ * Line drawing style for rounded joins (value is 2).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineJoin(int)
+ * @see org.eclipse.swt.graphics.GC#getLineJoin()
+ *
+ * @since 3.1
+ */
+ public static final int JOIN_ROUND = 2;
+
+ /**
+ * Line drawing style for bevel joins (value is 3).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineJoin(int)
+ * @see org.eclipse.swt.graphics.GC#getLineJoin()
+ *
+ * @since 3.1
+ */
+ public static final int JOIN_BEVEL = 3;
+
+ /**
+ * Line drawing style for solid lines (value is 1).
+ */
+ public static final int LINE_SOLID = 1;
+
+ /**
+ * Line drawing style for dashed lines (value is 2).
+ */
+ public static final int LINE_DASH = 2;
+
+ /**
+ * Line drawing style for dotted lines (value is 3).
+ */
+ public static final int LINE_DOT = 3;
+
+ /**
+ * Line drawing style for alternating dash-dot lines (value is 4).
+ */
+ public static final int LINE_DASHDOT = 4;
+
+ /**
+ * Line drawing style for dash-dot-dot lines (value is 5).
+ */
+ public static final int LINE_DASHDOTDOT = 5;
+
+ /**
+ * Line drawing style for custom dashed lines (value is 6).
+ *
+ * @see org.eclipse.swt.graphics.GC#setLineDash(int[])
+ * @see org.eclipse.swt.graphics.GC#getLineDash()
+ *
+ * @since 3.1
+ */
+ public static final int LINE_CUSTOM = 6;
+
+ /**
+ * Path constant that represents a "move to" operation (value is 1).
+ *
+ * @since 3.1
+ */
+ public static final int PATH_MOVE_TO = 1;
+
+ /**
+ * Path constant that represents a "line to" operation (value is 2).
+ *
+ * @since 3.1
+ */
+ public static final int PATH_LINE_TO = 2;
+
+ /**
+ * Path constant that represents a "quadratic curve to" operation (value is 3).
+ *
+ * @since 3.1
+ */
+ public static final int PATH_QUAD_TO = 3;
+
+ /**
+ * Path constant that represents a "cubic curve to" operation (value is 4).
+ *
+ * @since 3.1
+ */
+ public static final int PATH_CUBIC_TO = 4;
+
+ /**
+ * Path constant that represents a "close" operation (value is 5).
+ *
+ * @since 3.1
+ */
+ public static final int PATH_CLOSE = 5;
+
+ /**
+ * Even odd rule for filling operations (value is 1).
+ *
+ * @since 3.1
+ */
+ public static final int FILL_EVEN_ODD = 1;
+
+ /**
+ * Winding rule for filling operations (value is 2).
+ *
+ * @since 3.1
+ */
+ public static final int FILL_WINDING = 2;
+
+ /**
+ * Image format constant indicating an unknown image type (value is -1).
+ */
+ public static final int IMAGE_UNDEFINED = -1;
+
+ /**
+ * Image format constant indicating a Windows BMP format image (value is 0).
+ */
+ public static final int IMAGE_BMP = 0;
+
+ /**
+ * Image format constant indicating a run-length encoded
+ * Windows BMP format image (value is 1).
+ */
+ public static final int IMAGE_BMP_RLE = 1;
+
+ /**
+ * Image format constant indicating a GIF format image (value is 2).
+ */
+ public static final int IMAGE_GIF = 2;
+
+ /**
+ * Image format constant indicating a ICO format image (value is 3).
+ */
+ public static final int IMAGE_ICO = 3;
+
+ /**
+ * Image format constant indicating a JPEG format image (value is 4).
+ */
+ public static final int IMAGE_JPEG = 4;
+
+ /**
+ * Image format constant indicating a PNG format image (value is 5).
+ */
+ public static final int IMAGE_PNG = 5;
+
+ /**
+ * Image format constant indicating a TIFF format image (value is 6).
+ */
+ public static final int IMAGE_TIFF = 6;
+
+ /**
+ * Image format constant indicating an OS/2 BMP format image (value is 7).
+ */
+ public static final int IMAGE_OS2_BMP = 7;
+
+ /**
+ * Image format constant indicating a SVG format image (value is 8).
+ * <br>Note that this is a <em>HINT</em> and is currently only supported on GTK.
+ *
+ * @since 3.113
+ */
+ public static final int IMAGE_SVG = 8;
+
+ /**
+ * GIF image disposal method constants indicating that the
+ * disposal method is unspecified (value is 0).
+ */
+ public static final int DM_UNSPECIFIED = 0x0;
+
+ /**
+ * GIF image disposal method constants indicating that the
+ * disposal method is to do nothing; that is, to leave the
+ * previous image in place (value is 1).
+ */
+ public static final int DM_FILL_NONE = 0x1;
+
+ /**
+ * GIF image disposal method constants indicating that the
+ * the previous images should be covered with the background
+ * color before displaying the next image (value is 2).
+ */
+ public static final int DM_FILL_BACKGROUND = 0x2;
+
+ /**
+ * GIF image disposal method constants indicating that the
+ * disposal method is to restore the previous picture
+ * (value is 3).
+ */
+ public static final int DM_FILL_PREVIOUS = 0x3;
+
+ /**
+ * Image transparency constant indicating that the image
+ * contains no transparency information (value is 0).
+ */
+ public static final int TRANSPARENCY_NONE = 0x0;
+
+ /**
+ * Image transparency constant indicating that the image
+ * contains alpha transparency information (value is 1<<0).
+ */
+ public static final int TRANSPARENCY_ALPHA = 1 << 0;
+
+ /**
+ * Image transparency constant indicating that the image
+ * contains a transparency mask (value is 1<<1).
+ */
+ public static final int TRANSPARENCY_MASK = 1 << 1;
+
+ /**
+ * Image transparency constant indicating that the image
+ * contains a transparent pixel (value is 1<<2).
+ */
+ public static final int TRANSPARENCY_PIXEL = 1 << 2;
+
+ /**
+ * The character movement type (value is 1<<0).
+ * This constant is used to move a text offset over a character.
+ *
+ * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int)
+ * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int)
+ *
+ * @since 3.0
+ */
+ public static final int MOVEMENT_CHAR = 1 << 0;
+
+ /**
+ * The cluster movement type (value is 1<<1).
+ * This constant is used to move a text offset over a cluster.
+ * A cluster groups one or more characters. A cluster is
+ * undivisible, this means that a caret offset can not be placed in the
+ * middle of a cluster.
+ *
+ * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int)
+ * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int)
+ *
+ * @since 3.0
+ */
+ public static final int MOVEMENT_CLUSTER = 1 << 1;
+
+ /**
+ * The word movement type (value is 1<<2).
+ * This constant is used to move a text offset over a word.
+ * The behavior of this constant depends on the platform and on the
+ * direction of the movement. For example, on Windows the stop is
+ * always at the start of the word. On GTK and Mac the stop is at the end
+ * of the word if the direction is next and at the start of the word if the
+ * direction is previous.
+ *
+ * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int)
+ * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int)
+ *
+ * @since 3.0
+ */
+ public static final int MOVEMENT_WORD = 1 << 2;
+
+ /**
+ * The word end movement type (value is 1<<3).
+ * This constant is used to move a text offset to the next or previous
+ * word end. The behavior of this constant does not depend on the platform.
+ *
+ *
+ * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int)
+ * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int)
+ *
+ * @since 3.3
+ */
+ public static final int MOVEMENT_WORD_END = 1 << 3;
+
+ /**
+ * The word start movement type (value is 1<<4).
+ * This constant is used to move a text offset to the next or previous
+ * word start. The behavior of this constant does not depend on the platform.
+ *
+ * @see org.eclipse.swt.graphics.TextLayout#getNextOffset(int, int)
+ * @see org.eclipse.swt.graphics.TextLayout#getPreviousOffset(int, int)
+ *
+ * @since 3.3
+ */
+ public static final int MOVEMENT_WORD_START = 1 << 4;
+
+ /**
+ * A constant indicating that a given operation should be performed on
+ * all widgets (value is 1<<0).
+ *
+ * <p><b>Used By:</b></p>
+ * <ul>
+ * <li><code>Composite</code> layout</li>
+ * </ul>
+ *
+ * @see org.eclipse.swt.widgets.Composite#layout(org.eclipse.swt.widgets.Control[], int)
+ *
+ * @since 3.6
+ */
+ public static final int ALL = 1 << 0;
+
+ /**
+ * ID for the About menu item (value is -1).
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#setID(int)
+ * @see org.eclipse.swt.widgets.MenuItem#getID()
+ *
+ * @since 3.7
+ */
+ public static final int ID_ABOUT = -1;
+
+ /**
+ * ID for the Preferences menu item (value is -2).
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#setID(int)
+ * @see org.eclipse.swt.widgets.MenuItem#getID()
+ *
+ * @since 3.7
+ */
+ public static final int ID_PREFERENCES = -2;
+
+ /**
+ * ID for the Hide menu item (value is -3).
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#setID(int)
+ * @see org.eclipse.swt.widgets.MenuItem#getID()
+ *
+ * @since 3.7
+ */
+ public static final int ID_HIDE = -3;
+
+ /**
+ * ID for the Hide Others menu item (value is -4).
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#setID(int)
+ * @see org.eclipse.swt.widgets.MenuItem#getID()
+ *
+ * @since 3.7
+ */
+ public static final int ID_HIDE_OTHERS = -4;
+
+ /**
+ * ID for the Show All menu item (value is -5).
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#setID(int)
+ * @see org.eclipse.swt.widgets.MenuItem#getID()
+ *
+ * @since 3.7
+ */
+ public static final int ID_SHOW_ALL = -5;
+
+ /**
+ * ID for the Quit menu item (value is -6).
+ *
+ * @see org.eclipse.swt.widgets.MenuItem#setID(int)
+ * @see org.eclipse.swt.widgets.MenuItem#getID()
+ *
+ * @since 3.7
+ */
+ public static final int ID_QUIT = -6;
+
+ /**
+ * Key name for setting and getting the skin class of a widget.
+ * <p>
+ * Note: SWT currently doesn't read or process this property. The only
+ * effect of setting this property is to trigger a call to
+ * {@link Widget#reskin(int) Widget#reskin(SWT.ALL)}.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#getData(String)
+ * @see org.eclipse.swt.widgets.Widget#setData(String, Object)
+ *
+ * @since 3.6
+ */
+ public static final String SKIN_CLASS = "org.eclipse.swt.skin.class"; //$NON-NLS-1$
+
+ /**
+ * Key name for setting and getting the skin id of a widget.
+ * <p>
+ * Note: SWT currently doesn't read or process this property. The only
+ * effect of setting this property is to trigger a call to
+ * {@link Widget#reskin(int) Widget#reskin(SWT.ALL)}.
+ * </p>
+ *
+ * @see org.eclipse.swt.widgets.Widget#getData(String)
+ * @see org.eclipse.swt.widgets.Widget#setData(String, Object)
+ *
+ * @since 3.6
+ */
+ public static final String SKIN_ID = "org.eclipse.swt.skin.id"; //$NON-NLS-1$
+
+ /**
+ * The <code>Scrollable</code> constant to indicate that
+ * the receiver is using overlay scrollbars. (value is 1)
+ *
+ * @since 3.8
+ */
+ public static final int SCROLLBAR_OVERLAY = 1 << 1;
+
+
+/**
+ * Returns a boolean indicating whether this SWT implementation can
+ * be loaded. Examples of criteria that may be used to determine this
+ * include the OS and architecture of the JRE that is being used.
+ *
+ * @return <code>true</code> if this SWT implementation can be loaded
+ * and <code>false</code> otherwise
+ *
+ * @since 3.8
+ */
+public static boolean isLoadable () {
+ return Platform.isLoadable ();
+}
+
+/**
+ * Answers a concise, human readable description of the error code.
+ *
+ * @param code the SWT error code.
+ * @return a description of the error code.
+ *
+ * @see SWT
+ */
+static String findErrorText (int code) {
+ switch (code) {
+ case ERROR_UNSPECIFIED: return "Unspecified error"; //$NON-NLS-1$
+ case ERROR_NO_HANDLES: return "No more handles"; //$NON-NLS-1$
+ case ERROR_NO_MORE_CALLBACKS: return "No more callbacks"; //$NON-NLS-1$
+ case ERROR_NULL_ARGUMENT: return "Argument cannot be null"; //$NON-NLS-1$
+ case ERROR_INVALID_ARGUMENT: return "Argument not valid"; //$NON-NLS-1$
+ case ERROR_INVALID_RETURN_VALUE: return "Return value not valid"; //$NON-NLS-1$
+ case ERROR_INVALID_RANGE: return "Index out of bounds"; //$NON-NLS-1$
+ case ERROR_CANNOT_BE_ZERO: return "Argument cannot be zero"; //$NON-NLS-1$
+ case ERROR_CANNOT_GET_ITEM: return "Cannot get item"; //$NON-NLS-1$
+ case ERROR_CANNOT_GET_SELECTION: return "Cannot get selection"; //$NON-NLS-1$
+ case ERROR_CANNOT_GET_ITEM_HEIGHT: return "Cannot get item height"; //$NON-NLS-1$
+ case ERROR_CANNOT_GET_TEXT: return "Cannot get text"; //$NON-NLS-1$
+ case ERROR_CANNOT_SET_TEXT: return "Cannot set text"; //$NON-NLS-1$
+ case ERROR_ITEM_NOT_ADDED: return "Item not added"; //$NON-NLS-1$
+ case ERROR_ITEM_NOT_REMOVED: return "Item not removed"; //$NON-NLS-1$
+ case ERROR_NOT_IMPLEMENTED: return "Not implemented"; //$NON-NLS-1$
+ case ERROR_MENU_NOT_DROP_DOWN: return "Menu must be a drop down"; //$NON-NLS-1$
+ case ERROR_THREAD_INVALID_ACCESS: return "Invalid thread access"; //$NON-NLS-1$
+ case ERROR_WIDGET_DISPOSED: return "Widget is disposed"; //$NON-NLS-1$
+ case ERROR_MENUITEM_NOT_CASCADE: return "Menu item is not a CASCADE"; //$NON-NLS-1$
+ case ERROR_CANNOT_SET_SELECTION: return "Cannot set selection"; //$NON-NLS-1$
+ case ERROR_CANNOT_SET_MENU: return "Cannot set menu"; //$NON-NLS-1$
+ case ERROR_CANNOT_SET_ENABLED: return "Cannot set the enabled state"; //$NON-NLS-1$
+ case ERROR_CANNOT_GET_ENABLED: return "Cannot get the enabled state"; //$NON-NLS-1$
+ case ERROR_INVALID_PARENT: return "Widget has the wrong parent"; //$NON-NLS-1$
+ case ERROR_MENU_NOT_BAR: return "Menu is not a BAR"; //$NON-NLS-1$
+ case ERROR_CANNOT_GET_COUNT: return "Cannot get count"; //$NON-NLS-1$
+ case ERROR_MENU_NOT_POP_UP: return "Menu is not a POP_UP"; //$NON-NLS-1$
+ case ERROR_UNSUPPORTED_DEPTH: return "Unsupported color depth"; //$NON-NLS-1$
+ case ERROR_IO: return "i/o error"; //$NON-NLS-1$
+ case ERROR_INVALID_IMAGE: return "Invalid image"; //$NON-NLS-1$
+ case ERROR_UNSUPPORTED_FORMAT: return "Unsupported or unrecognized format"; //$NON-NLS-1$
+ case ERROR_INVALID_SUBCLASS: return "Subclassing not allowed"; //$NON-NLS-1$
+ case ERROR_GRAPHIC_DISPOSED: return "Graphic is disposed"; //$NON-NLS-1$
+ case ERROR_DEVICE_DISPOSED: return "Device is disposed"; //$NON-NLS-1$
+ case ERROR_FUNCTION_DISPOSED: return "BrowserFunction is disposed"; //$NON-NLS-1$
+ case ERROR_FAILED_EXEC: return "Failed to execute runnable"; //$NON-NLS-1$
+ case ERROR_FAILED_EVALUATE: return "Failed to evaluate javascript expression"; //$NON-NLS-1$
+ case ERROR_FAILED_LOAD_LIBRARY: return "Unable to load library"; //$NON-NLS-1$
+ case ERROR_CANNOT_INVERT_MATRIX: return "Cannot invert matrix"; //$NON-NLS-1$
+ case ERROR_NO_GRAPHICS_LIBRARY: return "Unable to load graphics library"; //$NON-NLS-1$
+ case ERROR_INVALID_FONT: return "Font not valid"; //$NON-NLS-1$
+ }
+ return "Unknown error"; //$NON-NLS-1$
+}
+
+/**
+ * Returns the NLS'ed message for the given argument.
+ *
+ * @param key the key to look up
+ * @return the message for the given key
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the key is null</li>
+ * </ul>
+ */
+public static String getMessage(String key) {
+ return Compatibility.getMessage(key);
+}
+
+/**
+ * Returns the NLS'ed message for the given arguments.
+ *
+ * @param key the key to look up
+ * @param args the parameters to insert into the message
+ * @return the message for the given parameterized key
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the key or args are null</li>
+ * </ul>
+ *
+ * @since 3.8
+ */
+public static String getMessage(String key, Object[] args) {
+ return Compatibility.getMessage(key, args);
+}
+
+/**
+ * Returns the SWT platform name.
+ * Examples: "win32", "gtk", "cocoa"
+ *
+ * @return the SWT platform name
+ */
+public static String getPlatform () {
+ return Platform.PLATFORM;
+}
+
+/**
+ * Returns the SWT version number as an integer.
+ * Example: "SWT051" == 51
+ *
+ * @return the SWT version number
+ */
+public static int getVersion () {
+ return Library.SWT_VERSION;
+}
+
+/**
+ * Throws an appropriate exception based on the passed in error code.
+ *
+ * @param code the SWT error code
+ */
+public static void error (int code) {
+ error (code, null);
+}
+
+/**
+ * Throws an appropriate exception based on the passed in error code.
+ * The <code>throwable</code> argument should be either null, or the
+ * throwable which caused SWT to throw an exception.
+ * <p>
+ * In SWT, errors are reported by throwing one of three exceptions:
+ * </p>
+ * <dl>
+ * <dd>java.lang.IllegalArgumentException</dd>
+ * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt>
+ * <dd>org.eclipse.swt.SWTException (extends java.lang.RuntimeException)</dd>
+ * <dt>thrown whenever a recoverable error happens internally in SWT</dt>
+ * <dd>org.eclipse.swt.SWTError (extends java.lang.Error)</dd>
+ * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in SWT</dt>
+ * </dl>
+ * This method provides the logic which maps between error codes
+ * and one of the above exceptions.
+ *
+ * @param code the SWT error code.
+ * @param throwable the exception which caused the error to occur.
+ *
+ * @see SWTError
+ * @see SWTException
+ * @see IllegalArgumentException
+ */
+public static void error (int code, Throwable throwable) {
+ error (code, throwable, null);
+}
+
+/**
+ * Throws an appropriate exception based on the passed in error code.
+ * The <code>throwable</code> argument should be either null, or the
+ * throwable which caused SWT to throw an exception.
+ * <p>
+ * In SWT, errors are reported by throwing one of three exceptions:
+ * </p>
+ * <dl>
+ * <dd>java.lang.IllegalArgumentException</dd>
+ * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt>
+ * <dd>org.eclipse.swt.SWTException (extends java.lang.RuntimeException)</dd>
+ * <dt>thrown whenever a recoverable error happens internally in SWT</dt>
+ * <dd>org.eclipse.swt.SWTError (extends java.lang.Error)</dd>
+ * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in SWT</dt>
+ * </dl>
+ * This method provides the logic which maps between error codes
+ * and one of the above exceptions.
+ *
+ * @param code the SWT error code.
+ * @param throwable the exception which caused the error to occur.
+ * @param detail more information about error.
+ *
+ * @see SWTError
+ * @see SWTException
+ * @see IllegalArgumentException
+ *
+ * @since 3.0
+ */
+public static void error (int code, Throwable throwable, String detail) {
+
+ /*
+ * This code prevents the creation of "chains" of SWTErrors and
+ * SWTExceptions which in turn contain other SWTErrors and
+ * SWTExceptions as their throwable. This can occur when low level
+ * code throws an exception past a point where a higher layer is
+ * being "safe" and catching all exceptions. (Note that, this is
+ * _a_bad_thing_ which we always try to avoid.)
+ *
+ * On the theory that the low level code is closest to the
+ * original problem, we simply re-throw the original exception here.
+ *
+ * NOTE: Exceptions thrown in syncExec and asyncExec must be
+ * wrapped.
+ */
+ if (code != SWT.ERROR_FAILED_EXEC) {
+ if (throwable instanceof SWTError) throw (SWTError) throwable;
+ if (throwable instanceof SWTException) throw (SWTException) throwable;
+ }
+
+ String message = findErrorText (code);
+ if (detail != null) message += detail;
+ switch (code) {
+
+ /* Illegal Arguments (non-fatal) */
+ case ERROR_NULL_ARGUMENT:
+ case ERROR_CANNOT_BE_ZERO:
+ case ERROR_INVALID_ARGUMENT:
+ case ERROR_MENU_NOT_BAR:
+ case ERROR_MENU_NOT_DROP_DOWN:
+ case ERROR_MENU_NOT_POP_UP:
+ case ERROR_MENUITEM_NOT_CASCADE:
+ case ERROR_INVALID_PARENT:
+ case ERROR_INVALID_RANGE: {
+ throw new IllegalArgumentException (message);
+ }
+
+ /* SWT Exceptions (non-fatal) */
+ case ERROR_INVALID_SUBCLASS:
+ case ERROR_THREAD_INVALID_ACCESS:
+ case ERROR_WIDGET_DISPOSED:
+ case ERROR_GRAPHIC_DISPOSED:
+ case ERROR_DEVICE_DISPOSED:
+ case ERROR_FUNCTION_DISPOSED:
+ case ERROR_INVALID_IMAGE:
+ case ERROR_UNSUPPORTED_DEPTH:
+ case ERROR_UNSUPPORTED_FORMAT:
+ case ERROR_FAILED_EXEC:
+ case ERROR_FAILED_EVALUATE:
+ case ERROR_CANNOT_INVERT_MATRIX:
+ case ERROR_NO_GRAPHICS_LIBRARY:
+ case ERROR_INVALID_RETURN_VALUE:
+ case ERROR_IO: {
+ SWTException exception = new SWTException (code, message);
+ exception.throwable = throwable;
+ throw exception;
+ }
+
+ /* Operation System Errors (fatal, may occur only on some platforms) */
+ case ERROR_CANNOT_GET_COUNT:
+ case ERROR_CANNOT_GET_ENABLED:
+ case ERROR_CANNOT_GET_ITEM:
+ case ERROR_CANNOT_GET_ITEM_HEIGHT:
+ case ERROR_CANNOT_GET_SELECTION:
+ case ERROR_CANNOT_GET_TEXT:
+ case ERROR_CANNOT_SET_ENABLED:
+ case ERROR_CANNOT_SET_MENU:
+ case ERROR_CANNOT_SET_SELECTION:
+ case ERROR_CANNOT_SET_TEXT:
+ case ERROR_ITEM_NOT_ADDED:
+ case ERROR_ITEM_NOT_REMOVED:
+ case ERROR_NO_HANDLES:
+ //FALL THROUGH
+
+ /* SWT Errors (fatal, may occur only on some platforms) */
+ case ERROR_FAILED_LOAD_LIBRARY:
+ case ERROR_NO_MORE_CALLBACKS:
+ case ERROR_NOT_IMPLEMENTED:
+ case ERROR_UNSPECIFIED: {
+ SWTError error = new SWTError (code, message);
+ error.throwable = throwable;
+ throw error;
+ }
+ }
+
+ /* Unknown/Undefined Error */
+ SWTError error = new SWTError (code, message);
+ error.throwable = throwable;
+ throw error;
+}
+
+static {
+ /*
+ * These values represent bit masks that may need to
+ * expand in the future. Therefore they are not initialized
+ * in the declaration to stop the compiler from inlining.
+ */
+ BUTTON_MASK = BUTTON1 | BUTTON2 | BUTTON3 | BUTTON4 | BUTTON5;
+ MODIFIER_MASK = ALT | SHIFT | CTRL | COMMAND | ALT_GR;
+
+ /*
+ * These values can be different on different platforms.
+ * Therefore they are not initialized in the declaration
+ * to stop the compiler from inlining.
+ */
+ String platform = getPlatform ();
+ if ("cocoa".equals (platform)) { //$NON-NLS-1$
+ MOD1 = COMMAND;
+ MOD2 = SHIFT;
+ MOD3 = ALT;
+ MOD4 = CONTROL;
+ } else {
+ MOD1 = CONTROL;
+ MOD2 = SHIFT;
+ MOD3 = ALT;
+ MOD4 = 0;
+ }
+}
+}
Code Review / simantics / platform.git / blobdiff