javauis/eswt_qt/org.eclipse.swt/Eclipse SWT/qt/org/eclipse/swt/widgets/Widget.java
changeset 21 2a9601315dfc
child 23 98ccebc37403
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_qt/org.eclipse.swt/Eclipse SWT/qt/org/eclipse/swt/widgets/Widget.java	Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,1250 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * Portion Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *     Nokia Corporation - Qt implementation
+ *******************************************************************************/
+package org.eclipse.swt.widgets;
+
+
+import org.eclipse.ercp.swt.mobile.Command;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.DisposeListener;
+import org.eclipse.swt.internal.SWTEventListener;
+import org.eclipse.swt.internal.qt.OS;
+import org.eclipse.swt.internal.qt.PackageProxy;
+import org.eclipse.swt.internal.qt.QObjectDeleteWrapper;
+import org.eclipse.swt.internal.qt.WidgetConstant;
+import org.eclipse.swt.internal.qt.WidgetState;
+
+/**
+ * This class is the abstract superclass of all user interface objects.
+ * Widgets are created, disposed and issue notification to listeners
+ * when events occur which affect them.
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>(none)</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Dispose</dd>
+ * </dl>
+ * <p>
+ * IMPORTANT: This class is intended to be subclassed <em>only</em>
+ * within the SWT implementation. However, it has not been marked
+ * final to allow those outside of the SWT development team to implement
+ * patched versions of the class in order to get around specific
+ * limitations in advance of when those limitations can be addressed
+ * by the team.  Any class built using subclassing to access the internals
+ * of this class will likely fail to compile or run between releases and
+ * may be strongly platform specific. Subclassing should not be attempted
+ * without an intimate and detailed understanding of the workings of the
+ * hierarchy. No support is provided for user-written classes which are
+ * implemented as subclasses of this class.
+ * </p>
+ *
+ * @see #checkSubclass
+ */
+public abstract class Widget {
+    int handle, topHandle;
+    
+    int style, state;
+    Display display;
+    EventTable eventTable;
+    Object data;
+
+    PackageProxy packageProxy;
+    
+static final int checkBits (int style, int int0, int int1, int int2, int int3, int int4, int int5) {
+    int mask = int0 | int1 | int2 | int3 | int4 | int5;
+    if ((style & mask) == 0) style |= int0;
+    if ((style & int0) != 0) style = (style & ~mask) | int0;
+    if ((style & int1) != 0) style = (style & ~mask) | int1;
+    if ((style & int2) != 0) style = (style & ~mask) | int2;
+    if ((style & int3) != 0) style = (style & ~mask) | int3;
+    if ((style & int4) != 0) style = (style & ~mask) | int4;
+    if ((style & int5) != 0) style = (style & ~mask) | int5;
+    return style;
+}
+
+/**
+ * Prevents uninitialized instances from being created outside the package.
+ */
+Widget () {}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * and a style value describing its behavior and appearance.
+ * <p>
+ * The style value is either one of the style constants defined in
+ * class <code>SWT</code> which is applicable to instances of this
+ * class, or must be built by <em>bitwise OR</em>'ing together
+ * (that is, using the <code>int</code> "|" operator) two or more
+ * of those <code>SWT</code> style constants. The class description
+ * lists the style constants that are applicable to the class.
+ * Style bits are also inherited from superclasses.
+ * </p>
+ *
+ * @param parent a widget which will be the parent of the new instance (cannot be null)
+ * @param style the style of widget to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parent is disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see SWT
+ * @see #checkSubclass
+ * @see #getStyle
+ */
+public Widget (Widget parent, int style) {
+    this(parent, style, 0, null, false);
+}
+
+/**
+ * <p>
+ * <b>IMPORTANT:</b> This constructor is <em>not</em> part of the SWT
+ * public API. It should never be referenced from application code. 
+ * </p>
+ */
+protected Widget (Widget parent, int style, int extraStyle, Object packageProxy, 
+        boolean isExtended) {
+    checkSubclass ();
+    checkParent (parent);
+    this.style = style;
+    if(isExtended) state |= WidgetState.IS_EXTENDED;
+    display = parent.display;
+    setPackageProxy(packageProxy);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the widget is disposed. When the widget is
+ * disposed, the listener is notified by sending it the
+ * <code>widgetDisposed()</code> message.
+ *
+ * @param listener the listener which should be notified when the receiver is disposed
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see DisposeListener
+ * @see #removeDisposeListener
+ */
+public void addDisposeListener (DisposeListener listener) {
+    checkWidget ();
+    if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+    TypedListener typedListener = new TypedListener (listener);
+    addListener (SWT.Dispose, typedListener);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when an event of the given type occurs. When the
+ * event does occur in the widget, the listener is notified by
+ * sending it the <code>handleEvent()</code> message. The event
+ * type is one of the event constants defined in class <code>SWT</code>.
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should be notified when the event occurs
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see SWT
+ * @see #removeListener(int, Listener)
+ * @see #notifyListeners
+ */
+public void addListener (int eventType, Listener listener) {
+    checkWidget ();
+    if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+    _addListener (eventType, listener);
+}
+
+void _addListener (int eventType, Listener listener) {
+    if (eventTable == null) eventTable = new EventTable ();
+    eventTable.hook (eventType, listener);
+}
+
+final void addWidget (int handle) {
+    display.addWidget(handle, this);
+}
+
+final void checkOrientation (Widget parent) {
+    style &= ~SWT.MIRRORED;
+    
+    // If orientation explicitly specified then always use that
+    if ((style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT)) == 0) {
+        if (parent != null) {
+            // Inherit the flag from parent
+            if ((parent.style & SWT.LEFT_TO_RIGHT) != 0) style |= SWT.LEFT_TO_RIGHT;
+            if ((parent.style & SWT.RIGHT_TO_LEFT) != 0) style |= SWT.RIGHT_TO_LEFT;
+            
+            // If the parent follows the system language direction this widget
+            // does too (unless the user explicitly specified the direction). 
+            state |= (parent.state & WidgetState.FOLLOWS_SYSLANG_DIRECTION);
+        } else {
+            // Use the default determined by a system property. 
+            // Setting RIGHT_TO_LEFT flag triggers the coordinate mirroring. 
+            if(display.defaultOrientation != SWT.LEFT_TO_RIGHT) {
+                style |= display.defaultOrientation;
+            }
+            
+            // If there's no parent this widget follows the system language 
+            // direction if that's the default behavior configured by a system 
+            // property. 
+            if(display.defaultOrientationIsSysLangDirection)
+                state |= WidgetState.FOLLOWS_SYSLANG_DIRECTION;
+        }
+    }
+    style = checkBits (style, SWT.LEFT_TO_RIGHT, SWT.RIGHT_TO_LEFT, 0, 0, 0, 0);
+}
+
+/*
+ * Throws an exception if the specified widget can not be
+ * used as a parent for the receiver.
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the parent is disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ * </ul>
+ */
+final void checkParent (Widget parent) {
+    if (parent == null) error (SWT.ERROR_NULL_ARGUMENT);
+    if (parent.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+    parent.checkWidget ();
+}
+
+/**
+ * Checks that this class can be subclassed.
+ * <p>
+ * The SWT class library is intended to be subclassed
+ * only at specific, controlled points (most notably,
+ * <code>Composite</code> and <code>Canvas</code> when
+ * implementing new widgets). This method enforces this
+ * rule unless it is overridden.
+ * </p><p>
+ * <em>IMPORTANT:</em> By providing an implementation of this
+ * method that allows a subclass of a class which does not
+ * normally allow subclassing to be created, the implementer
+ * agrees to be fully responsible for the fact that any such
+ * subclass will likely fail between SWT releases and will be
+ * strongly platform specific. No support is provided for
+ * user-written classes which are implemented in this fashion.
+ * </p><p>
+ * The ability to subclass outside of the allowed SWT classes
+ * is intended purely to enable those not on the SWT development
+ * team to implement patches in order to get around specific
+ * limitations in advance of when those limitations can be
+ * addressed by the team. Subclassing should not be attempted
+ * without an intimate and detailed understanding of the hierarchy.
+ * </p>
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ */
+protected void checkSubclass () {
+    if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+/**
+ * Throws an <code>SWTException</code> if the receiver can not
+ * be accessed by the caller. This may include both checks on
+ * the state of the receiver and more generally on the entire
+ * execution context. This method <em>should</em> be called by
+ * widget implementors to enforce the standard SWT invariants.
+ * <p>
+ * Currently, it is an error to invoke any method (other than
+ * <code>isDisposed()</code>) on a widget that has had its
+ * <code>dispose()</code> method called. It is also an error
+ * to call widget methods from any thread that is different
+ * from the thread that created the widget.
+ * </p><p>
+ * In future releases of SWT, there may be more or fewer error
+ * checks and exceptions may be thrown for different reasons.
+ * </p>
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+protected void checkWidget () {
+    Display display = this.display;
+    if (display == null) error (SWT.ERROR_WIDGET_DISPOSED);
+    if (display.thread != Thread.currentThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
+    if ((state & WidgetState.DISPOSED) != 0) error (SWT.ERROR_WIDGET_DISPOSED);
+}
+
+/*
+ * _pp means that some widgets want to "override" this method in another 
+ * package. If this is such a widget then there is a 'package proxy' (pp) that 
+ * must be called instead of the implementation in this package. 
+ */ 
+void createHandle_pp (int index) {
+}
+
+void createWidget (int index) {
+    if(packageProxy != null) {
+        packageProxy.createHandle(index);
+    } else {
+        createHandle_pp (index);
+    }
+    // If subclasses didn't specify topHandle then it's assumed that there's
+    // only one QWidget. I.e. handle is the root widget. 
+    if(topHandle == 0) topHandle = handle;
+    if(packageProxy != null) {
+        packageProxy.hookEvents();
+    } else {
+        hookEvents_pp();
+    }
+    if(packageProxy != null) {
+        packageProxy.register();
+    } else {
+        register_pp();
+    }
+}
+
+void deregister_pp () {
+    if (handle != 0) display.removeWidget (handle);
+}
+
+void destroyWidget () {
+    int _topHandle = topHandle;
+    if(packageProxy != null) {
+        packageProxy.releaseHandle();
+    } else {
+        releaseHandle_pp ();
+    }
+    if (_topHandle != 0 && (state & WidgetState.HANDLE) != 0) {
+        QObjectDeleteWrapper.deleteSafely( _topHandle );
+    }
+}
+
+/**
+ * Disposes of the operating system resources associated with
+ * the receiver and all its descendants. After this method has
+ * been invoked, the receiver and all descendants will answer
+ * <code>true</code> when sent the message <code>isDisposed()</code>.
+ * Any internal connections between the widgets in the tree will
+ * have been removed to facilitate garbage collection.
+ * <p>
+ * NOTE: This method is not called recursively on the descendants
+ * of the receiver. This means that, widget implementers can not
+ * detect when a widget is being disposed of by re-implementing
+ * this method, but should instead listen for the <code>Dispose</code>
+ * event.
+ * </p>
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see #addDisposeListener
+ * @see #removeDisposeListener
+ * @see #checkWidget
+ */
+public void dispose () {
+    if (isDisposed ()) return;
+    if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
+    release (true);
+}
+
+final void error (int code) {
+    SWT.error (code);
+}
+
+final boolean filters (int eventType) {
+    return display.filters (eventType);
+}
+
+static final Command[] getCommands(Control control) {
+    return control.getCommands();
+}
+
+/**
+ * Returns the application defined widget data associated
+ * with the receiver, or null if it has not been set. The
+ * <em>widget data</em> is a single, unnamed field that is
+ * stored with every widget.
+ * <p>
+ * Applications may put arbitrary objects in this field. If
+ * the object stored in the widget data needs to be notified
+ * when the widget is disposed of, it is the application's
+ * responsibility to hook the Dispose event on the widget and
+ * do so.
+ * </p>
+ *
+ * @return the widget data
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - when the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - when called from the wrong thread</li>
+ * </ul>
+ *
+ * @see #setData(Object)
+ */
+public Object getData () {
+    checkWidget();
+    return (state & WidgetState.KEYED_DATA) != 0 ? ((Object []) data) [0] : data;
+}
+
+/**
+ * Returns the application defined property of the receiver
+ * with the specified name, or null if it has not been set.
+ * <p>
+ * Applications may have associated arbitrary objects with the
+ * receiver in this fashion. If the objects stored in the
+ * properties need to be notified when the widget is disposed
+ * of, it is the application's responsibility to hook the
+ * Dispose event on the widget and do so.
+ * </p>
+ *
+ * @param   key the name of the property
+ * @return the value of the property or null if it has not been set
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the key is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see #setData(String, Object)
+ */
+public Object getData (String key) {
+    checkWidget();
+    if (key == null) error (SWT.ERROR_NULL_ARGUMENT);
+    if ((state & WidgetState.KEYED_DATA) != 0) {
+        Object [] table = (Object []) data;
+        for (int i=1; i<table.length; i+=2) {
+            if (key.equals (table [i])) return table [i+1];
+        }
+    }
+    return null;
+}
+
+/**
+ * Returns the <code>Display</code> that is associated with
+ * the receiver.
+ * <p>
+ * A widget's display is either provided when it is created
+ * (for example, top level <code>Shell</code>s) or is the
+ * same as its parent's display.
+ * </p>
+ *
+ * @return the receiver's display
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Display getDisplay () {
+    Display display = this.display;
+    if (display == null) error (SWT.ERROR_WIDGET_DISPOSED);
+    return display;
+}
+
+String getName () {
+    String string = getClass ().getName ();
+    int index = string.length ();
+    while ((--index > 0) && (string.charAt (index) != '.')) {}
+    return string.substring (index + 1, string.length ());
+}
+
+String getNameText () {
+    return "";
+}
+
+String getPhoneNumber_pp() {
+    if (packageProxy != null) {
+        return packageProxy.getPhoneNumber();
+    }
+    return null;
+}
+
+/**
+ * Returns the receiver's style information.
+ * <p>
+ * Note that the value which is returned by this method <em>may
+ * not match</em> the value which was provided to the constructor
+ * when the receiver was created. This can occur when the underlying
+ * operating system does not support a particular combination of
+ * requested styles. For example, if the platform widget used to
+ * implement a particular SWT widget always has scroll bars, the
+ * result of calling this method would always have the
+ * <code>SWT.H_SCROLL</code> and <code>SWT.V_SCROLL</code> bits set.
+ * </p>
+ *
+ * @return the style bits
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public int getStyle () {
+    checkWidget ();
+    return style;
+}
+
+// Experimental support for StyleSheets
+public String getStyleSheet(){
+    checkWidget();
+    return OS.QWidget_styleSheet(handle);
+}
+
+void hookEvents_pp () {
+}
+
+/*
+ * Returns <code>true</code> if the specified eventType is
+ * hooked, and <code>false</code> otherwise. Implementations
+ * of SWT can avoid creating objects and sending events
+ * when an event happens in the operating system but
+ * there are no listeners hooked for the event.
+ *
+ * @param eventType the event to be checked
+ *
+ * @return <code>true</code> when the eventType is hooked and <code>false</code> otherwise
+ *
+ * @see #isListening
+ */
+final boolean hooks (int eventType) {
+    if (eventTable == null) return false;
+    return eventTable.hooks (eventType);
+}
+
+/**
+ * Returns <code>true</code> if the widget has been disposed,
+ * and <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the widget.
+ * When a widget has been disposed, it is an error to
+ * invoke any other method using the widget.
+ * </p>
+ *
+ * @return <code>true</code> when the widget is disposed and <code>false</code> otherwise
+ */
+public boolean isDisposed () {
+    return (state & WidgetState.DISPOSED) != 0;
+}
+
+/**
+ * Returns <code>true</code> if there are any listeners
+ * for the specified event type associated with the receiver,
+ * and <code>false</code> otherwise. The event type is one of
+ * the event constants defined in class <code>SWT</code>.
+ *
+ * @param eventType the type of event
+ * @return true if the event is hooked
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SWT
+ */
+public boolean isListening (int eventType) {
+    checkWidget ();
+    return hooks (eventType);
+}
+
+/*
+ * Checks if key or character code corresponds to selection key
+ * @param key Key code
+ * @param character Character code
+ * @return true if key/character is a selection key, false otherwise
+ */
+final boolean isSelectionKey(int key, int character) {
+    if(OS.windowServer == OS.WS_X11) {
+        if (character == ' ') {
+            return true;
+        }
+    } else if (OS.windowServer == OS.WS_SYMBIAN_S60) {
+        if (key == OS.QT_KEY_RETURN || character == -5) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+final boolean isValidSubclass() {
+    return Display.isValidClass(getClass());
+}
+
+final boolean isValidThread () {
+    return getDisplay ().isValidThread ();
+}
+
+final Event makeKeyEvent(int key, int modifier, int character, int nativeScanCode) {
+    Event event = new Event ();
+    switch (key) {
+    case OS.QT_KEY_CONTROL: //intentional fall through
+    case OS.QT_KEY_ALT:
+    case OS.QT_KEY_META:
+    case OS.QT_KEY_UP:
+    case OS.QT_KEY_DOWN:
+    case OS.QT_KEY_LEFT:
+    case OS.QT_KEY_RIGHT:
+        event.character = 0;
+        break;
+    case OS.QT_KEY_ENTER : //intentional fall through
+    case OS.QT_KEY_RETURN :     event.character = SWT.CR; break;
+    case OS.QT_KEY_BACKSPACE:   event.character = SWT.BS; break;
+    case OS.QT_KEY_DELETE:      event.character = SWT.DEL; break;
+    case OS.QT_KEY_ESCAPE:      event.character = SWT.ESC; break;
+    case OS.QT_KEY_TAB:         event.character = SWT.TAB; break;
+    case OS.QT_KEY_SHIFT:       event.character = (char)SWT.SHIFT; break;
+    default:
+        event.character = (char)character; break;
+    }
+
+    boolean keypad = (modifier & OS.QT_KEYPADMODIFIER) != 0 ;
+    event.keyCode = Display.translateKey( key, keypad );
+    if ( event.keyCode == 0 ){// keyCode defaults to unicode value of character.
+        event.keyCode = character;
+    }
+    if( (modifier & OS.QT_NOMODIFIER) == 0  ){
+        event.stateMask = Display.translateModifiers(modifier);
+    }
+    if (keypad) {
+        event.keyLocation = SWT.KEYPAD;
+    }
+    
+    event.keyLocation |= Display.translateKeyLocation(nativeScanCode);
+
+    return event;
+}
+
+/**
+ * Notifies all of the receiver's listeners for events
+ * of the given type that one such event has occurred by
+ * invoking their <code>handleEvent()</code> method.  The
+ * event type is one of the event constants defined in class
+ * <code>SWT</code>.
+ *
+ * @param eventType the type of event which has occurred
+ * @param event the event data
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SWT
+ * @see #addListener
+ * @see #removeListener(int, Listener)
+ */
+public void notifyListeners (int eventType, Event event) {
+    checkWidget();
+    if (event == null) event = new Event ();
+    sendEvent (eventType, event);
+}
+
+final void postEvent (int eventType) {
+    sendEvent (eventType, null, false);
+}
+
+final void postEvent (int eventType, Event event) {
+    sendEvent (eventType, event, false);
+}
+
+/*
+ *  Qt Events
+ */
+boolean qt_event_close() {
+    return false;
+}
+
+boolean qt_event_contextmenu(int x, int y, int reason) {
+    return false;
+}
+
+boolean qt_event_focusIn( int reason ) {
+    return false;
+}
+
+boolean qt_event_focusOut( int reason ) {
+    return false;
+}
+
+boolean qt_event_keypress_pp( int widgetHandle, int key, int modifier, int character, int nativeScanCode ) {
+    if (((state & WidgetState.NO_KEY_PROPAGATE) != 0) && (widgetHandle != handle)) {
+        return true;
+    }
+    return sendKeyEvent( SWT.KeyDown, key, modifier, character, nativeScanCode );
+}
+
+boolean qt_event_keyrelease_pp( int widgetHandle, int key, int modifier, int character, int nativeScanCode ) {
+    if (((state & WidgetState.NO_KEY_PROPAGATE) != 0) && (widgetHandle != handle)) {
+        return true;
+    }
+    return sendKeyEvent( SWT.KeyUp, key, modifier, character, nativeScanCode );
+}
+
+boolean qt_event_mouseButtonDblClick_pp( int widgetHandle, int button, int x, int y, int state, int buttons ) {
+    return false;
+}
+
+boolean qt_event_mouseButtonPress_pp (int widgetHandle, int button, int x, int y, int state, int buttons) {
+    return false;
+}
+
+boolean qt_event_mouseButtonRelease_pp ( int widgetHandle, int button, int x, int y, int state, int buttons  ) {
+    return false;
+}
+
+boolean qt_event_mouseMove ( int widgetHandle, int button, int x, int y, int state, int buttons  ) {
+    return false;
+}
+
+boolean qt_event_paint( int widgetHandle, int x, int y, int width, int height, int regionHandle ) {
+    return false;
+}
+
+boolean qt_event_shortcut(int key, int modifier, int character) {
+    return false;
+}
+
+boolean qt_event_windowActivate(int widgetHandle) {
+    return false;
+}
+
+boolean qt_event_windowDeactivate(int widgetHandle) {
+    return false;
+}
+
+boolean qt_event_windowStateChange(int widgetHandle, int oldState) {
+    return false;
+}
+
+/*
+ *  Qt Signals
+ */
+void qt_signal_aboutToHide() {
+}
+
+void qt_signal_aboutToShow() {
+}
+
+void qt_signal_clicked() {
+}
+
+void qt_signal_qapplication_focusChanged_pp(int old, int now) {
+}
+
+void qt_signal_current_tab_changed_pp(int index) {
+}
+
+void qt_signal_dateedit_dateTimeChanged_pp() {
+}
+
+void qt_signal_hover() {
+}
+
+void qt_signal_linkActivated_pp(String link) {
+}
+
+void qt_signal_list_itemActivated_pp(int selectionHandle) {
+}
+
+void qt_signal_list_itemDoubleClicked_pp(int selectionHandle) {
+}
+
+void qt_signal_list_itemSelectionChanged_pp() {
+}
+
+void qt_signal_pressed() {
+}
+
+void qt_signal_released() {
+}
+
+void qt_signal_requestCompleted_pp(int value){
+}
+
+void qt_signal_return_pressed_pp() {
+}
+
+void qt_signal_selectionChanged_pp(int selectionHandle, int deSelectionHandle) {
+}
+
+void qt_signal_slider_action_triggered(int action) {
+}
+
+void qt_signal_slider_changed(int value) {
+}
+
+void qt_signal_slider_released(){
+}
+
+void qt_signal_table_cellActivated(int row, int column) {
+}
+
+void qt_signal_table_cellChanged(int row, int column) {
+}
+
+void qt_signal_table_currentCellChanged(int currentRow, int currentColumn, int previousRow, int previousColumn) {
+}
+
+void qt_signal_table_itemSelectionChanged() {
+}
+
+void qt_signal_text_changed_pp(String text) {
+}
+
+void qt_signal_text_cursorPositionChanged_pp(int oldPos, int newPos) {
+}
+
+void qt_signal_text_selectionChanged_pp() {
+}
+
+void qt_signal_tray_activated(int arg1) {
+}
+
+void qt_signal_tree_itemActivated(int selectionHandle, int column) {
+}
+
+void qt_signal_tree_itemCollapsed(int selectionHandle) {
+}
+
+void qt_signal_tree_itemExpanded(int selectionHandle) {
+}
+
+void qt_signal_tree_itemSelectionChanged() {
+}
+
+void qt_signal_triggered_pp(boolean checked) {
+}
+
+void qt_signal_abstractitemview_activated_pp(int row, int column) {
+}
+
+/*
+ * QtSwt Events
+ */
+void qt_swt_event_bufferFlush() {
+}
+
+void qt_swt_event_focusWasGained() {
+}
+
+void qt_swt_event_focusWasLost() {
+}
+
+void qt_swt_event_widgetMoved(int widgetHandle) {
+}
+
+void qt_swt_event_widgetPainted(int widgetHandle, int x, int y, int width, int height, int regionHandle) {
+}
+
+void qt_swt_event_widgetResized_pp(int widgetHandle, int oldWidth, int oldHeight, int width, int height) {
+}
+
+void register_pp () {
+    if (handle == 0) return;
+    if ((state & WidgetState.HANDLE) != 0) display.addWidget (handle, this);
+}
+
+void release (boolean destroy) {
+    if ((state & WidgetState.DISPOSE_SENT) == 0) {
+        state |= WidgetState.DISPOSE_SENT;
+        sendEvent (SWT.Dispose);
+    }
+    if ((state & WidgetState.DISPOSED) == 0) {
+        if(packageProxy != null) {
+            packageProxy.releaseChildren(destroy);
+        } else {
+            releaseChildren_pp(destroy);
+        }
+    }
+    if ((state & WidgetState.RELEASED) == 0) {
+        state |= WidgetState.RELEASED;
+        if (destroy) {
+            if(packageProxy != null) {
+                packageProxy.releaseParent();
+                packageProxy.releaseWidget();
+            } else {
+                releaseParent_pp();
+                releaseWidget_pp();
+            }
+            destroyWidget ();
+        } else {
+            if(packageProxy != null) {
+                packageProxy.releaseWidget ();
+                packageProxy.releaseHandle();
+            } else {
+                releaseWidget_pp ();
+                releaseHandle_pp ();
+            }
+        }
+    }
+}
+
+void releaseChildren_pp (boolean destroy) {
+}
+
+void releaseHandle_pp () {
+    handle = topHandle = 0;
+    state |= WidgetState.DISPOSED;
+    display = null;
+}
+
+void releaseParent_pp () {
+    /* Do nothing */
+}
+
+void releaseWidget_pp () {
+    if(packageProxy != null) {
+        packageProxy.deregister();
+    } else {
+        deregister_pp();
+    }
+    eventTable = null;
+    data = null;
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the widget is disposed.
+ *
+ * @param listener the listener which should no longer be notified when the receiver is disposed
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see DisposeListener
+ * @see #addDisposeListener
+ */
+public void removeDisposeListener (DisposeListener listener) {
+    checkWidget ();
+    if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+    if (eventTable == null) return;
+    eventTable.unhook (SWT.Dispose, listener);
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when an event of the given type occurs. The event
+ * type is one of the event constants defined in class <code>SWT</code>.
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should no longer be notified when the event occurs
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see SWT
+ * @see #addListener
+ * @see #notifyListeners
+ */
+public void removeListener (int eventType, Listener handler) {
+    checkWidget ();
+    if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
+    if (eventTable == null) return;
+    eventTable.unhook (eventType, handler);
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when an event of the given type occurs.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the SWT
+ * public API. It is marked public only so that it can be shared
+ * within the packages provided by SWT. It should never be
+ * referenced from application code.
+ * </p>
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should no longer be notified when the event occurs
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see #addListener
+ */
+protected void removeListener (int eventType, SWTEventListener handler) {
+    checkWidget ();
+    if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
+    if (eventTable == null) return;
+    eventTable.unhook (eventType, handler);
+}
+
+final Widget removeWidget (int handle) {
+    return display.removeWidget(handle);
+}
+
+final void sendEvent (Event event) {
+    Display display = event.display;
+    if (!display.filterEvent (event)) {
+        if (eventTable != null) eventTable.sendEvent (event);
+    }
+}
+
+final void sendEvent (int eventType) {
+    sendEvent (eventType, null, true);
+}
+
+final void sendEvent (int eventType, Event event) {
+    sendEvent (eventType, event, true);
+}
+
+final void sendEvent (int eventType, Event event, boolean send) {
+    if (eventTable == null && !display.filters (eventType)) {
+        return;
+    }
+    if (event == null) event = new Event ();
+    event.type = eventType;
+    event.display = display;
+    event.widget = this;
+    if (event.time == 0) {
+        event.time = display.getLastEventTime ();
+    }
+    if (send) {
+        sendEvent (event);
+    } else {
+        display.postEvent (event);
+    }
+}
+
+final boolean sendKeyEvent ( int type, int key, int modifier, int character, int nativeScanCode ) {
+    Event event = makeKeyEvent(key, modifier, character, nativeScanCode);
+    sendEvent (type, event);
+    if (isDisposed () ) return true;
+    return !event.doit;
+}
+
+/**
+ * Sets the application defined widget data associated
+ * with the receiver to be the argument. The <em>widget
+ * data</em> is a single, unnamed field that is stored
+ * with every widget.
+ * <p>
+ * Applications may put arbitrary objects in this field. If
+ * the object stored in the widget data needs to be notified
+ * when the widget is disposed of, it is the application's
+ * responsibility to hook the Dispose event on the widget and
+ * do so.
+ * </p>
+ *
+ * @param data the widget data
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - when the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - when called from the wrong thread</li>
+ * </ul>
+ *
+ * @see #getData()
+ */
+public void setData (Object data) {
+    checkWidget();
+    if ((state & WidgetState.KEYED_DATA) != 0) {
+        ((Object []) this.data) [0] = data;
+    } else {
+        this.data = data;
+    }
+}
+
+/**
+ * Sets the application defined property of the receiver
+ * with the specified name to the given value.
+ * <p>
+ * Applications may associate arbitrary objects with the
+ * receiver in this fashion. If the objects stored in the
+ * properties need to be notified when the widget is disposed
+ * of, it is the application's responsibility to hook the
+ * Dispose event on the widget and do so.
+ * </p>
+ *
+ * @param key the name of the property
+ * @param value the new value for the property
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the key is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see #getData(String)
+ */
+public void setData (String key, Object value) {
+    checkWidget();
+    if (key == null) error (SWT.ERROR_NULL_ARGUMENT);
+    
+    if (key.equals (WidgetConstant.SET_CANVAS_STATE_KEY)) {
+        boolean enabled = ((Boolean)value).booleanValue();
+        if (enabled) {
+            this.state |= WidgetState.CANVAS;
+        }
+        else {
+            this.state &= ~WidgetState.CANVAS;
+        }
+        return;
+    }
+
+    if (key.equals (WidgetConstant.SET_NO_TRAVERSE_STATE_KEY)) {
+        boolean enabled = ((Boolean)value).booleanValue();
+        if (enabled) {
+            this.state |= WidgetState.NO_TRAVERSE;
+        }
+        else {
+            this.state &= ~WidgetState.NO_TRAVERSE;
+        }
+        return;
+    }
+
+    if (key.equals (WidgetConstant.SET_NO_KEY_PROPAGATE_STATE_KEY)) {
+        boolean enabled = ((Boolean)value).booleanValue();
+        if (enabled) {
+            this.state |= WidgetState.NO_KEY_PROPAGATE;
+        }
+        else {
+            this.state &= ~WidgetState.NO_KEY_PROPAGATE;
+        }
+        return;
+    }
+
+    if (key.equals (WidgetConstant.SET_NO_MOUSE_PROPAGATE_STATE_KEY)) {
+        boolean enabled = ((Boolean)value).booleanValue();
+        if (enabled) {
+            this.state |= WidgetState.NO_MOUSE_PROPAGATE;
+        }
+        else {
+            this.state &= ~WidgetState.NO_MOUSE_PROPAGATE;
+        }
+        return;
+    }
+
+    if (key.equals (WidgetConstant.SET_EMBEDDED_SCROLLBARS_STATE_KEY)) {
+        boolean enabled = ((Boolean)value).booleanValue();
+        if (enabled) {
+            this.state |= WidgetState.EMBEDDED_SCROLLBARS;
+        }
+        else {
+            this.state &= ~WidgetState.EMBEDDED_SCROLLBARS;
+        }
+        return;
+    }
+
+    if(key.equals(WidgetConstant.CSS_ID)){
+    	OS.QObject_setObjectName(handle,(String)value);
+    	// Do not return here and let Widget store the key
+    	// value.
+    }
+    
+    int index = 1;
+    Object [] table = null;
+    if ((state & WidgetState.KEYED_DATA) != 0) {
+        table = (Object []) data;
+        while (index < table.length) {
+            if (key.equals (table [index])) break;
+            index += 2;
+        }
+    }
+    if (value != null) {
+        if ((state & WidgetState.KEYED_DATA) != 0) {
+            if (index == table.length) {
+                Object [] newTable = new Object [table.length + 2];
+                System.arraycopy (table, 0, newTable, 0, table.length);
+                data = table = newTable;
+            }
+        } else {
+            table = new Object [3];
+            table [0] = data;
+            data = table;
+            state |= WidgetState.KEYED_DATA;
+        }
+        table [index] = key;
+        table [index + 1] = value;
+    } else {
+        if ((state & WidgetState.KEYED_DATA) != 0) {
+            if (index != table.length) {
+                int length = table.length - 2;
+                if (length == 1) {
+                    data = table [0];
+                    state &= ~WidgetState.KEYED_DATA;
+                } else {
+                    Object [] newTable = new Object [length];
+                    System.arraycopy (table, 0, newTable, 0, index);
+                    System.arraycopy (table, index + 2, newTable, index, length - index);
+                    data = newTable;
+                }
+            }
+        }
+    }
+}
+
+final void setPackageProxy(Object packageProxy) {
+    // If the subclass is in another package then it provides a proxy object 
+    // which implements the methods that "override" the package private
+    // implementations from this package. We must call the proxy object
+    // implementations if they are provided. 
+    if(packageProxy != null) {
+        PackageProxy proxyObject = (PackageProxy)packageProxy; 
+        proxyObject.setWidget(this);
+        this.packageProxy = proxyObject;
+    }
+}
+
+/**
+ * Returns a string containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a string representation of the receiver
+ */
+public String toString () {
+    String string = "*Disposed*";
+    if (!isDisposed ()) {
+        string = "*Wrong Thread*";
+        if (isValidThread ()) string = getNameText ();
+    }
+    return getName () + " {" + string + "}";
+}
+
+}