| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * 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 |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.wpf.*; |
| import org.eclipse.swt.internal.win32.*; |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| |
| /** |
| * 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 |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| */ |
| |
| public abstract class Widget { |
| /** |
| * the handle to the OS resource |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field 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 is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public int handle; |
| int jniRef; |
| int style, state; |
| Display display; |
| EventTable eventTable; |
| Object data; |
| |
| /* Global state flags */ |
| static final int DISPOSED = 1<<0; |
| static final int CANVAS = 1<<1; |
| static final int KEYED_DATA = 1<<2; |
| static final int DISABLED = 1<<3; |
| static final int HIDDEN = 1<<4; |
| |
| /* A layout was requested on this widget */ |
| static final int LAYOUT_NEEDED = 1<<5; |
| |
| /* The preferred size of a child has changed */ |
| static final int LAYOUT_CHANGED = 1<<6; |
| |
| /* A layout was requested in this widget hierachy */ |
| static final int LAYOUT_CHILD = 1<<7; |
| |
| /* Background flags */ |
| static final int THEME_BACKGROUND = 1<<8; |
| static final int DRAW_BACKGROUND = 1<<9; |
| static final int PARENT_BACKGROUND = 1<<10; |
| |
| /* Dispose and release flags */ |
| static final int RELEASED = 1<<11; |
| static final int DISPOSE_SENT = 1<<12; |
| |
| static final int MOVED = 1<<13; |
| static final int RESIZED = 1<<14; |
| |
| /* DragDetect */ |
| static final int DRAG_DETECT = 1<<15; |
| |
| /* Notify of the opportunity to skin this widget */ |
| static final int SKIN_NEEDED = 1<<16; |
| |
| /* Default size for widgets */ |
| static final int DEFAULT_WIDTH = 64; |
| static final int DEFAULT_HEIGHT = 64; |
| |
| |
| static final int CLICK = 1; |
| |
| /** |
| * 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) { |
| checkSubclass (); |
| checkParent (parent); |
| this.style = style; |
| display = parent.display; |
| reskinWidget (); |
| } |
| |
| void _addListener (int eventType, Listener listener) { |
| if (eventTable == null) eventTable = new EventTable (); |
| eventTable.hook (eventType, listener); |
| } |
| |
| /** |
| * 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 #getListeners(int) |
| * @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); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| void addWidget () { |
| } |
| |
| /** |
| * Returns a style with exactly one style bit set out of |
| * the specified set of exclusive style bits. All other |
| * possible bits are cleared when the first matching bit |
| * is found. Bits that are not part of the possible set |
| * are untouched. |
| * |
| * @param style the original style bits |
| * @param int0 the 0th possible style bit |
| * @param int1 the 1st possible style bit |
| * @param int2 the 2nd possible style bit |
| * @param int3 the 3rd possible style bit |
| * @param int4 the 4th possible style bit |
| * @param int5 the 5th possible style bit |
| * |
| * @return the new style bits |
| */ |
| static 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; |
| } |
| |
| boolean checkEvent (int e) { |
| if (isDisposed ()) return false; |
| int routedEventType = OS.RoutedEventArgs_typeid (); |
| int source = 0; |
| if (OS.Type_IsInstanceOfType (routedEventType, e)) { |
| source = OS.RoutedEventArgs_OriginalSource (e); |
| } |
| OS.GCHandle_Free (routedEventType); |
| if (source == 0) return true; |
| if (OS.Object_Equals (source, handle)) { |
| OS.GCHandle_Free (source); |
| return true; |
| } |
| Widget widget = display.getWidget (source); |
| OS.GCHandle_Free (source); |
| if (widget == this) return true; |
| if (hasItems ()) { |
| if (this == widget.getWidgetControl ()) return true; |
| } |
| return false; |
| } |
| |
| void checkOrientation (Widget parent) { |
| style &= ~SWT.MIRRORED; |
| if ((style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT)) == 0) { |
| if (parent != null) { |
| 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; |
| } |
| } |
| style = checkBits (style, SWT.LEFT_TO_RIGHT, SWT.RIGHT_TO_LEFT, 0, 0, 0, 0); |
| } |
| |
| void checkOpened () { |
| /* Do nothing */ |
| } |
| |
| /** |
| * 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> |
| */ |
| void checkParent (Widget parent) { |
| if (parent == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (parent.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT); |
| parent.checkWidget (); |
| parent.checkOpened (); |
| } |
| |
| /** |
| * 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 & DISPOSED) != 0) error (SWT.ERROR_WIDGET_DISPOSED); |
| } |
| |
| void createHandle () { |
| } |
| |
| int createDotNetString (String string, boolean fixMnemonic) { |
| if (string == null) return 0; |
| char [] buffer; |
| if (fixMnemonic) { |
| buffer = fixMnemonic (string); |
| } else { |
| int length = string.length (); |
| buffer = new char [length + 1]; |
| string.getChars (0, length, buffer, 0); |
| } |
| int ptr = OS.gcnew_String (buffer); |
| if (ptr == 0) error (SWT.ERROR_NO_HANDLES); |
| return ptr; |
| } |
| |
| static String createJavaString (int ptr) { |
| int charArray = OS.String_ToCharArray (ptr); |
| char[] chars = new char[OS.String_Length (ptr)]; |
| OS.memcpy (chars, charArray, chars.length * 2); |
| OS.GCHandle_Free (charArray); |
| return new String (chars); |
| } |
| |
| void createWidget () { |
| jniRef = OS.NewGlobalRef (this); |
| if (jniRef == 0) error (SWT.ERROR_NO_HANDLES); |
| createHandle (); |
| addWidget (); |
| register (); |
| hookEvents (); |
| setNameScope (); |
| } |
| |
| void deregister () { |
| } |
| |
| /** |
| * Destroys the widget in the operating system and releases |
| * the widget's handle. If the widget does not have a handle, |
| * this method may hide the widget, mark the widget as destroyed |
| * or do nothing, depending on the widget. |
| * <p> |
| * When a widget is destroyed in the operating system, its |
| * descendents are also destroyed by the operating system. |
| * This means that it is only necessary to call <code>destroyWidget</code> |
| * on the root of the widget tree. |
| * </p><p> |
| * This method is called after <code>releaseWidget()</code>. |
| * </p><p> |
| * See also <code>releaseChild()</code>, <code>releaseWidget()</code> |
| * and <code>releaseHandle()</code>. |
| * </p> |
| * |
| * @see #dispose |
| */ |
| void destroyWidget () { |
| releaseHandle (); |
| } |
| |
| /** |
| * 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. |
| * This method does nothing if the widget is already disposed. |
| * <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 () { |
| /* |
| * Note: It is valid to attempt to dispose a widget |
| * more than once. If this happens, fail silently. |
| */ |
| if (isDisposed ()) return; |
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| release (true); |
| } |
| |
| boolean dragOverride () { |
| return false; |
| } |
| |
| static void dumpObjectType (int object) { |
| int objectType = OS.Object_GetType(object); |
| int type = OS.Type_FullName(objectType); |
| String typeName = createJavaString(type); |
| OS.GCHandle_Free(objectType); |
| OS.GCHandle_Free(type); |
| System.out.println(typeName); |
| } |
| |
| void dumpVisualTree (int visual, int depth) { |
| for (int i = 0; i < depth; i++) System.out.print ("\t"); |
| int type = OS.Object_GetType (visual); |
| int typeNamePtr = OS.Type_FullName (type); |
| OS.GCHandle_Free (type); |
| String typeName = createJavaString (typeNamePtr); |
| OS.GCHandle_Free(typeNamePtr); |
| int name = OS.FrameworkElement_Name (visual); |
| double width = OS.FrameworkElement_Width (visual); |
| double actualWidth = OS.FrameworkElement_ActualWidth (visual); |
| double height = OS.FrameworkElement_Height (visual); |
| double actualHeight = OS.FrameworkElement_ActualHeight (visual); |
| String widgetName = createJavaString (name); |
| OS.GCHandle_Free (name); |
| System.out.println(typeName + " ["+widgetName+ " width=" + width + " actualWidth=" + actualWidth + " height=" + height + " actualHeight=" + actualHeight+"]"); |
| int count = OS.VisualTreeHelper_GetChildrenCount(visual); |
| for (int i = 0; i < count; i++) { |
| int child = OS.VisualTreeHelper_GetChild (visual, i); |
| dumpVisualTree(child, depth+1); |
| OS.GCHandle_Free(child); |
| } |
| } |
| /** |
| * Does whatever widget specific cleanup is required, and then |
| * uses the code in <code>SWTError.error</code> to handle the error. |
| * |
| * @param code the descriptive error code |
| * |
| * @see SWT#error(int) |
| */ |
| void error (int code) { |
| SWT.error(code); |
| } |
| |
| boolean filters (int eventType) { |
| return display.filters (eventType); |
| } |
| |
| char [] fixMnemonic (String string) { |
| int length = string.length (); |
| char [] text = new char [length]; |
| string.getChars (0, length, text, 0); |
| int i = 0, j = 0; |
| char [] result = new char [length * 2 + 1]; |
| while (i < length) { |
| switch (text [i]) { |
| case '&': |
| if (i + 1 < length && text [i + 1] == '&') { |
| i++; |
| } else { |
| text [i] = '_'; |
| } |
| break; |
| case '_': |
| result [j++] = '_'; |
| break; |
| } |
| result [j++] = text [i++]; |
| } |
| return result; |
| } |
| |
| /** |
| * 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 & 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 & 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; |
| } |
| |
| /** |
| * Returns an array 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 |
| * @return an array of listeners that will be notified when the event occurs |
| * |
| * @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(int, Listener) |
| * @see #removeListener(int, Listener) |
| * @see #notifyListeners |
| * |
| * @since 3.4 |
| */ |
| public Listener[] getListeners (int eventType) { |
| checkWidget(); |
| if (eventTable == null) return new Listener[0]; |
| return eventTable.getListeners(eventType); |
| } |
| |
| Menu getMenu () { |
| return null; |
| } |
| |
| /** |
| * Returns the name of the widget. This is the name of |
| * the class without the package name. |
| * |
| * @return the name of the widget |
| */ |
| String getName () { |
| String string = getClass ().getName (); |
| int index = string.lastIndexOf ('.'); |
| if (index == -1) return string; |
| return string.substring (index + 1, string.length ()); |
| } |
| |
| /* |
| * Returns a short printable representation for the contents |
| * of a widget. For example, a button may answer the label |
| * text. This is used by <code>toString</code> to provide a |
| * more meaningful description of the widget. |
| * |
| * @return the contents string for the widget |
| * |
| * @see #toString |
| */ |
| String getNameText () { |
| return ""; //$NON-NLS-1$ |
| } |
| |
| /** |
| * 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; |
| } |
| |
| Control getWidgetControl () { |
| return null; |
| } |
| |
| boolean hasItems () { |
| return false; |
| } |
| |
| void hookEvents () { |
| } |
| |
| /* |
| * 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 |
| */ |
| 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 (except {@link #dispose()}) using the widget. |
| * </p> |
| * |
| * @return <code>true</code> when the widget is disposed and <code>false</code> otherwise |
| */ |
| public boolean isDisposed () { |
| return (state & 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); |
| } |
| |
| /* |
| * Returns <code>true</code> when subclassing is |
| * allowed and <code>false</code> otherwise |
| * |
| * @return <code>true</code> when subclassing is allowed and <code>false</code> otherwise |
| */ |
| boolean isValidSubclass () { |
| return Display.isValidClass (getClass ()); |
| } |
| |
| /* |
| * Returns <code>true</code> when the current thread is |
| * the thread that created the widget and <code>false</code> |
| * otherwise. |
| * |
| * @return <code>true</code> when the current thread is the thread that created the widget and <code>false</code> otherwise |
| */ |
| boolean isValidThread () { |
| return getDisplay ().isValidThread (); |
| } |
| |
| void mapEvent (int hwnd, Event event) { |
| } |
| |
| boolean mnemonicMatch (int accessText, char key) { |
| if (accessText == 0) return false; |
| char mnemonic = OS.AccessText_AccessKey (accessText); |
| return Character.toLowerCase (key) == Character.toLowerCase (mnemonic); |
| } |
| |
| /** |
| * 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 #getListeners(int) |
| * @see #removeListener(int, Listener) |
| */ |
| public void notifyListeners (int eventType, Event event) { |
| checkWidget(); |
| if (event == null) event = new Event (); |
| sendEvent (eventType, event); |
| } |
| |
| void postEvent (int eventType) { |
| sendEvent (eventType, null, false); |
| } |
| |
| void postEvent (int eventType, Event event) { |
| sendEvent (eventType, event, false); |
| } |
| |
| void register () { |
| } |
| |
| /* |
| * Releases the widget hiearchy and optionally destroys |
| * the receiver. |
| * <p> |
| * Typically, a widget with children will broadcast this |
| * message to all children so that they too can release their |
| * resources. The <code>releaseHandle</code> method is used |
| * as part of this broadcast to zero the handle fields of the |
| * children without calling <code>destroyWidget</code>. In |
| * this scenario, the children are actually destroyed later, |
| * when the operating system destroys the widget tree. |
| * </p> |
| * |
| * @param destroy indicates that the receiver should be destroyed |
| * |
| * @see #dispose |
| * @see #releaseHandle |
| * @see #releaseParent |
| * @see #releaseWidget |
| */ |
| void release (boolean destroy) { |
| if ((state & DISPOSE_SENT) == 0) { |
| state |= DISPOSE_SENT; |
| sendEvent (SWT.Dispose); |
| } |
| if ((state & DISPOSED) == 0) { |
| releaseChildren (destroy); |
| } |
| if ((state & RELEASED) == 0) { |
| state |= RELEASED; |
| if (destroy) { |
| releaseParent (); |
| releaseWidget (); |
| destroyWidget (); |
| } else { |
| releaseWidget (); |
| releaseHandle (); |
| } |
| } |
| } |
| |
| void releaseChildren (boolean destroy) { |
| } |
| |
| /* |
| * Releases the widget's handle by zero'ing it out. |
| * Does not destroy or release any operating system |
| * resources. |
| * <p> |
| * This method is called after <code>releaseWidget</code> |
| * or from <code>destroyWidget</code> when a widget is being |
| * destroyed to ensure that the widget is marked as destroyed |
| * in case the act of destroying the widget in the operating |
| * system causes application code to run in callback that |
| * could access the widget. |
| * </p> |
| * |
| * @see #dispose |
| * @see #releaseChildren |
| * @see #releaseParent |
| * @see #releaseWidget |
| */ |
| void releaseHandle () { |
| state |= DISPOSED; |
| display = null; |
| if (jniRef != 0) OS.DeleteGlobalRef (jniRef); |
| jniRef = 0; |
| } |
| |
| /* |
| * Releases the receiver, a child in a widget hierarchy, |
| * from its parent. |
| * <p> |
| * When a widget is destroyed, it may be necessary to remove |
| * it from an internal data structure of the parent. When |
| * a widget has no handle, it may also be necessary for the |
| * parent to hide the widget or otherwise indicate that the |
| * widget has been disposed. For example, disposing a menu |
| * bar requires that the menu bar first be released from the |
| * shell when the menu bar is active. |
| * </p> |
| * |
| * @see #dispose |
| * @see #releaseChildren |
| * @see #releaseWidget |
| * @see #releaseHandle |
| */ |
| void releaseParent () { |
| } |
| |
| /* |
| * Releases any internal resources back to the operating |
| * system and clears all fields except the widget handle. |
| * <p> |
| * When a widget is destroyed, resources that were acquired |
| * on behalf of the programmer need to be returned to the |
| * operating system. For example, if the widget made a |
| * copy of an icon, supplied by the programmer, this copy |
| * would be freed in <code>releaseWidget</code>. Also, |
| * to assist the garbage collector and minimize the amount |
| * of memory that is not reclaimed when the programmer keeps |
| * a reference to a disposed widget, all fields except the |
| * handle are zero'd. The handle is needed by <code>destroyWidget</code>. |
| * </p> |
| * |
| * @see #dispose |
| * @see #releaseChildren |
| * @see #releaseHandle |
| * @see #releaseParent |
| */ |
| void releaseWidget () { |
| deregister (); |
| eventTable = null; |
| data = null; |
| } |
| |
| /** |
| * 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 |
| * |
| * @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 #getListeners(int) |
| * @see #notifyListeners |
| */ |
| public void removeListener (int eventType, Listener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (eventType, listener); |
| } |
| |
| /** |
| * 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 |
| * |
| * @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 |
| * |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| protected void removeListener (int eventType, SWTEventListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (eventType, listener); |
| } |
| |
| /** |
| * Marks the widget to be skinned. |
| * <p> |
| * The skin event is sent to the receiver's display when appropriate (usually before the next event |
| * is handled). Widgets are automatically marked for skinning upon creation as well as when its skin |
| * id or class changes. The skin id and/or class can be changed by calling <code>Display.setData(String, Object)</code> |
| * with the keys SWT.SKIN_ID and/or SWT.SKIN_CLASS. Once the skin event is sent to a widget, it |
| * will not be sent again unless <code>reskin(int)</code> is called on the widget or on an ancestor |
| * while specifying the <code>SWT.ALL</code> flag. |
| * </p> |
| * <p> |
| * The parameter <code>flags</code> may be either: |
| * <dl> |
| * <dt><b>SWT.ALL</b></dt> |
| * <dd>all children in the receiver's widget tree should be skinned</dd> |
| * <dt><b>SWT.NONE</b></dt> |
| * <dd>only the receiver should be skinned</dd> |
| * </dl> |
| * </p> |
| * @param flags the flags specifying how to reskin |
| * |
| * @exception SWTException |
| * <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * @since 3.6 |
| */ |
| public void reskin (int flags) { |
| checkWidget (); |
| reskinWidget (); |
| if ((flags & SWT.ALL) != 0) reskinChildren (flags); |
| } |
| |
| void reskinChildren (int flags) { |
| } |
| |
| void reskinWidget() { |
| if ((state & SKIN_NEEDED) != SKIN_NEEDED) { |
| this.state |= SKIN_NEEDED; |
| display.addSkinnableWidget(this); |
| } |
| } |
| |
| /** |
| * 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 |
| * |
| * @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); |
| } |
| |
| boolean sendDragEvent (int e) { |
| return sendMouseEvent (SWT.DragDetect, e, false); |
| } |
| |
| boolean sendDragEvent (int button, int stateMask, int x, int y) { |
| Event event = new Event (); |
| event.button = button; |
| event.x = x; |
| event.y = y; |
| event.stateMask = stateMask; |
| postEvent (SWT.DragDetect, event); |
| return event.doit; |
| } |
| |
| void sendEvent (Event event) { |
| Display display = event.display; |
| if (!display.filterEvent (event)) { |
| if (eventTable != null) eventTable.sendEvent (event); |
| } |
| } |
| |
| void sendEvent (int eventType) { |
| sendEvent (eventType, null, true); |
| } |
| |
| void sendEvent (int eventType, Event event) { |
| sendEvent (eventType, event, true); |
| } |
| |
| 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); |
| } |
| } |
| |
| boolean sendKeyEvent (int type, int e, boolean textInput) { |
| if (textInput) { |
| int text = OS.TextCompositionEventArgs_Text(e); |
| if (OS.String_Length(text) == 0) { |
| OS.GCHandle_Free(text); |
| text = OS.TextCompositionEventArgs_SystemText(e); |
| if (OS.String_Length(text) == 0) { |
| OS.GCHandle_Free(text); |
| text = OS.TextCompositionEventArgs_ControlText(e); |
| if (OS.String_Length(text) == 0) { |
| return false; |
| } |
| } |
| } |
| int chars = OS.String_ToCharArray(text); |
| char[] buffer = new char[OS.String_Length(text)]; |
| OS.memcpy(buffer, chars, buffer.length * 2); |
| OS.GCHandle_Free(chars); |
| OS.GCHandle_Free(text); |
| for (int i = 0; i < buffer.length; i++) { |
| Event event = new Event (); |
| if (buffer.length == 1) { |
| event.keyCode = Display.translateKey(display.lastKey); |
| } |
| event.character = buffer[i]; |
| //hack for dead key |
| if (display.deadChar) { |
| event.character = display.lastChar; |
| display.deadChar = false; |
| } |
| setInputState(event, type, 0, 0); |
| sendEvent (type, event); |
| if (isDisposed ()) return false; |
| } |
| return true; |
| } else { |
| Event event = new Event (); |
| if (!setKeyState (event, type, e)) return true; |
| sendEvent (type, event); |
| if (isDisposed ()) return false; |
| return event.doit; |
| } |
| } |
| |
| boolean sendMouseEvent (int type, int e, boolean send) { |
| boolean hooksType = hooks (type) || filters (type); |
| boolean hooksDoubleClick = type == SWT.MouseDown && (hooks (SWT.MouseDoubleClick) || filters (SWT.MouseDoubleClick)); |
| if (!hooksType && !hooksDoubleClick) return true; |
| Event event = new Event (); |
| if (type == SWT.MouseDown || type == SWT.MouseUp || type == SWT.DragDetect) { |
| event.button = OS.MouseButtonEventArgs_ChangedButton (e) + 1; |
| event.count = OS.MouseButtonEventArgs_ClickCount (e); |
| } |
| if (type == SWT.MouseWheel) { |
| int lines = OS.SystemParameters_WheelScrollLines (); |
| int delta = OS.MouseWheelEventArgs_Delta (e); |
| if (lines == -1) { |
| event.detail = SWT.SCROLL_PAGE; |
| event.count = delta / 120; |
| } else { |
| event.detail = SWT.SCROLL_LINE; |
| event.count = delta * lines / 120; |
| } |
| } |
| int point = OS.MouseEventArgs_GetPosition (e, handle); |
| event.x = (int) OS.Point_X (point); |
| event.y = (int) OS.Point_Y (point); |
| OS.GCHandle_Free (point); |
| setInputState (event, type, e, 0); |
| Event doubleClick = null; |
| if (hooksDoubleClick && (event.count & 1) == 0) { |
| doubleClick = new Event(); |
| doubleClick.button = event.button; |
| doubleClick.x = event.x; |
| doubleClick.y = event.y; |
| doubleClick.count = event.count; |
| doubleClick.stateMask = event.stateMask; |
| } |
| if (send) { |
| sendEvent (type, event); |
| if (isDisposed ()) return false; |
| } else { |
| postEvent (type, event); |
| } |
| if (doubleClick != null) { |
| if (send) { |
| sendEvent (SWT.MouseDoubleClick, doubleClick); |
| if (isDisposed ()) return false; |
| } else { |
| postEvent (SWT.MouseDoubleClick, doubleClick); |
| } |
| } |
| return event.doit; |
| } |
| void sendSelectionEvent (int eventType) { |
| sendSelectionEvent (eventType, null, false); |
| } |
| |
| void sendSelectionEvent (int eventType, Event event, boolean send) { |
| if (eventTable == null && !display.filters (eventType)) { |
| return; |
| } |
| if (event == null) event = new Event (); |
| // setInputState (event, state); |
| sendEvent (eventType, event, send); |
| } |
| |
| //TEMPORARY CODE |
| void setClipping (int widget, boolean clip) { |
| //TODO - should be is-kind-of UIElement rather than not DrawingVisual |
| int type = OS.Object_GetType(widget); |
| int drawingVisualType = OS.DrawingVisual_typeid(); |
| if (!OS.Object_Equals(type, drawingVisualType)) { |
| OS.UIElement_ClipToBounds (widget, clip); |
| } |
| OS.GCHandle_Free(drawingVisualType); |
| OS.GCHandle_Free(type); |
| int count = OS.VisualTreeHelper_GetChildrenCount(widget); |
| for (int i = 0; i < count; i++) { |
| int child = OS.VisualTreeHelper_GetChild (widget, i); |
| setClipping(child, clip); |
| OS.GCHandle_Free(child); |
| } |
| } |
| |
| /** |
| * 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 & 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); |
| int index = 1; |
| Object [] table = null; |
| if ((state & KEYED_DATA) != 0) { |
| table = (Object []) data; |
| while (index < table.length) { |
| if (key.equals (table [index])) break; |
| index += 2; |
| } |
| } |
| if (value != null) { |
| if ((state & 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 |= KEYED_DATA; |
| } |
| table [index] = key; |
| table [index + 1] = value; |
| } else { |
| if ((state & KEYED_DATA) != 0) { |
| if (index != table.length) { |
| int length = table.length - 2; |
| if (length == 1) { |
| data = table [0]; |
| state &= ~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; |
| } |
| } |
| } |
| } |
| |
| // Demo |
| if ("XAML".equals(key) && value instanceof String) { |
| setClipping (topHandle (), false); |
| String string = (String) value; |
| int ptr = createDotNetString(string, false); |
| int stringReader = OS.gcnew_StringReader (ptr); |
| int xmlReader = OS.XmlReader_Create (stringReader); |
| int resource = OS.XamlReader_Load (xmlReader); |
| if (resource != 0) { |
| OS.FrameworkElement_Resources (handle, resource); |
| OS.GCHandle_Free(resource); |
| } |
| OS.GCHandle_Free(xmlReader); |
| OS.GCHandle_Free(stringReader); |
| OS.GCHandle_Free(ptr); |
| } |
| if ("ResourceDictionary".equals(key) && value instanceof String) { |
| String string = (String) value; |
| int ptr = createDotNetString(string, false); |
| int uri = OS.gcnew_Uri(ptr, OS.UriKind_RelativeOrAbsolute); |
| int resources = OS.gcnew_ResourceDictionary(); |
| OS.ResourceDictionary_Source(resources, uri); |
| OS.FrameworkElement_Resources(handle, resources); |
| OS.GCHandle_Free(resources); |
| OS.GCHandle_Free(uri); |
| OS.GCHandle_Free(ptr); |
| } |
| if (key.equals(SWT.SKIN_CLASS) || key.equals(SWT.SKIN_ID)) this.reskin(SWT.ALL); |
| } |
| |
| boolean sendFocusEvent (int type) { |
| sendEvent (type); |
| // widget could be disposed at this point |
| return true; |
| } |
| |
| boolean setInputState (Event event, int type, int mouseEvent, int keyEvent) { |
| int modifiers; |
| if (keyEvent != 0) { |
| int keyboardDevice = OS.KeyboardEventArgs_KeyboardDevice(keyEvent); |
| modifiers = OS.KeyboardDevice_Modifiers(keyboardDevice); |
| OS.GCHandle_Free(keyboardDevice); |
| } else { |
| modifiers = OS.Keyboard_Modifiers(); |
| } |
| if ((modifiers & OS.ModifierKeys_Alt) != 0) event.stateMask |= SWT.ALT; |
| if ((modifiers & OS.ModifierKeys_Shift) != 0) event.stateMask |= SWT.SHIFT; |
| if ((modifiers & OS.ModifierKeys_Control) != 0) event.stateMask |= SWT.CONTROL; |
| if (mouseEvent != 0) { |
| if (OS.MouseEventArgs_LeftButton(mouseEvent) == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON1; |
| if (OS.MouseEventArgs_MiddleButton(mouseEvent) == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON2; |
| if (OS.MouseEventArgs_RightButton(mouseEvent) == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON3; |
| if (OS.MouseEventArgs_XButton1(mouseEvent) == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON4; |
| if (OS.MouseEventArgs_XButton2(mouseEvent) == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON5; |
| } else { |
| if (OS.Mouse_LeftButton() == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON1; |
| if (OS.Mouse_MiddleButton() == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON2; |
| if (OS.Mouse_RightButton() == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON3; |
| if (OS.Mouse_XButton1() == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON4; |
| if (OS.Mouse_XButton2() == OS.MouseButtonState_Pressed) event.stateMask |= SWT.BUTTON5; |
| } |
| switch (type) { |
| case SWT.MouseDown: |
| case SWT.MouseDoubleClick: |
| if (event.button == 1) event.stateMask &= ~SWT.BUTTON1; |
| if (event.button == 2) event.stateMask &= ~SWT.BUTTON2; |
| if (event.button == 3) event.stateMask &= ~SWT.BUTTON3; |
| if (event.button == 4) event.stateMask &= ~SWT.BUTTON4; |
| if (event.button == 5) event.stateMask &= ~SWT.BUTTON5; |
| break; |
| case SWT.MouseUp: |
| if (event.button == 1) event.stateMask |= SWT.BUTTON1; |
| if (event.button == 2) event.stateMask |= SWT.BUTTON2; |
| if (event.button == 3) event.stateMask |= SWT.BUTTON3; |
| if (event.button == 4) event.stateMask |= SWT.BUTTON4; |
| if (event.button == 5) event.stateMask |= SWT.BUTTON5; |
| break; |
| case SWT.KeyDown: |
| case SWT.Traverse: |
| if (event.keyCode == SWT.ALT) event.stateMask &= ~SWT.ALT; |
| if (event.keyCode == SWT.SHIFT) event.stateMask &= ~SWT.SHIFT; |
| if (event.keyCode == SWT.CONTROL) event.stateMask &= ~SWT.CONTROL; |
| break; |
| case SWT.KeyUp: |
| if (event.keyCode == SWT.ALT) event.stateMask |= SWT.ALT; |
| if (event.keyCode == SWT.SHIFT) event.stateMask |= SWT.SHIFT; |
| if (event.keyCode == SWT.CONTROL) event.stateMask |= SWT.CONTROL; |
| break; |
| } |
| return true; |
| } |
| |
| boolean setKeyState (Event event, int type, int e) { |
| int key = display.lastKey = OS.KeyEventArgs_Key(e); |
| boolean repeat = OS.KeyEventArgs_IsRepeat(e); |
| switch (key) { |
| case OS.Key_ImeProcessed: |
| return false; |
| case OS.Key_LeftAlt: |
| case OS.Key_RightAlt: |
| case OS.Key_LeftCtrl: |
| case OS.Key_LeftShift: |
| case OS.Key_RightCtrl: |
| case OS.Key_RightShift: |
| if (repeat) return false; |
| break; |
| case OS.Key_System: |
| key = OS.KeyEventArgs_SystemKey(e); |
| switch (key) { |
| case OS.Key_LeftAlt: |
| case OS.Key_RightAlt: |
| if (repeat) return false; |
| } |
| } |
| boolean textual = false; |
| int vKey = OS.KeyInterop_VirtualKeyFromKey (key); |
| int mapKey = Win32.MapVirtualKeyW (vKey, 2); |
| if ((mapKey & 0x80000000) != 0) { |
| display.deadChar = true; |
| return false; |
| } |
| char [] result = new char [1]; |
| byte [] keyboard = new byte [256]; |
| Win32.GetKeyboardState (keyboard); |
| textual = Win32.ToUnicode (vKey, 0, keyboard, result, 1, 0) == 1; |
| if (textual && type == SWT.KeyDown) { |
| if (display.deadChar) display.lastChar = result [0]; |
| //TODO problem: in german, dead key + non-combing key |
| // example: '^' + 'p' fails. |
| return false; |
| } |
| event.keyCode = Display.translateKey (key); |
| switch (key) { |
| case OS.Key_Back: event.character = SWT.BS; break; |
| case OS.Key_LineFeed: event.character = SWT.LF; break; |
| case OS.Key_Return: event.character = SWT.CR; break; |
| case OS.Key_Delete: event.character = SWT.DEL; break; |
| case OS.Key_Escape: event.character = SWT.ESC; break; |
| case OS.Key_Tab: event.character = SWT.TAB; break; |
| } |
| if (type == SWT.KeyUp) event.character = result [0]; |
| return setInputState (event, type, 0, e); |
| } |
| |
| void setNameScope() { |
| // Name Scope should most likely be on topHandle, but animation |
| // is using handle right now because topHandle isn't visible |
| // OS.NameScope_SetNameScope(topHandle(), display.nameScope); |
| OS.NameScope_SetNameScope(handle, display.nameScope); |
| } |
| |
| boolean showMenu (int x, int y) { |
| Event event = new Event (); |
| event.x = x; |
| event.y = y; |
| sendEvent (SWT.MenuDetect, event); |
| if (!event.doit) return true; |
| Menu menu = getMenu (); |
| if (menu != null && !menu.isDisposed ()) { |
| if (x != event.x || y != event.y) { |
| menu.setLocation (event.x, event.y); |
| } |
| menu.setVisible (true); |
| return true; |
| } |
| return false; |
| } |
| |
| int topHandle () { |
| return handle; |
| } |
| |
| /** |
| * 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*"; //$NON-NLS-1$ |
| if (!isDisposed ()) { |
| string = "*Wrong Thread*"; //$NON-NLS-1$ |
| if (isValidThread ()) string = getNameText (); |
| } |
| return getName () + " {" + string + "}"; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| |
| void updateLayout (int updateHandle) { |
| boolean ignore = display.ignoreRender; |
| display.ignoreRender = true; |
| OS.UIElement_UpdateLayout (updateHandle); |
| display.ignoreRender = ignore; |
| } |
| |
| } |