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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java | 2517 |
1 files changed, 0 insertions, 2517 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java deleted file mode 100755 index a5b8368f1f..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Widget.java +++ /dev/null @@ -1,2517 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2009 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.win32.*; -import org.eclipse.swt.*; -import org.eclipse.swt.graphics.*; -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 { - 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 hierarchy */ - 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; - - /* More global widget state flags */ - static final int TRACK_MOUSE = 1<<13; - static final int FOREIGN_HANDLE = 1<<14; - static final int DRAG_DETECT = 1<<15; - - /* Move and resize state flags */ - static final int MOVE_OCCURRED = 1<<16; - static final int MOVE_DEFERRED = 1<<17; - static final int RESIZE_OCCURRED = 1<<18; - static final int RESIZE_DEFERRED = 1<<19; - - /* Ignore WM_CHANGEUISTATE */ - static final int IGNORE_WM_CHANGEUISTATE = 1<<20; - - /* Default size for widgets */ - static final int DEFAULT_WIDTH = 64; - static final int DEFAULT_HEIGHT = 64; - - /* Check and initialize the Common Controls DLL */ - static final int MAJOR = 5, MINOR = 80; - static { - if (!OS.IsWinCE) { - if (OS.COMCTL32_VERSION < OS.VERSION (MAJOR, MINOR)) { - System.out.println ("***WARNING: SWT requires comctl32.dll version " + MAJOR + "." + MINOR + " or greater"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ - System.out.println ("***WARNING: Detected: " + OS.COMCTL32_MAJOR + "." + OS.COMCTL32_MINOR); //$NON-NLS-1$ //$NON-NLS-2$ - } - } - OS.InitCommonControls (); - } - -/** - * 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; -} - -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); -} - -int /*long*/ callWindowProc (int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) { - return 0; -} - -/** - * 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; -} - -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 ()) { - /* - * Bug in IBM JVM 1.6. For some reason, under - * conditions that are yet to be full understood, - * Thread.currentThread() is either returning null - * or a different instance from the one that was - * saved when the Display was created. This is - * possibly a JIT problem because modifying this - * method to print logging information when the - * error happens seems to fix the problem. The - * fix is to use operating system calls to verify - * that the current thread is not the Display thread. - * - * NOTE: Despite the fact that Thread.currentThread() - * is used in other places, the failure has not been - * observed in all places where it is called. - */ - if (display.threadId != OS.GetCurrentThreadId ()) { - error (SWT.ERROR_THREAD_INVALID_ACCESS); - } - } - if ((state & DISPOSED) != 0) error (SWT.ERROR_WIDGET_DISPOSED); -} - -/** - * 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 - * descendants 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 (); -} - -int /*long*/ DeferWindowPos(int /*long*/ hWinPosInfo, int /*long*/ hWnd, int /*long*/ hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags){ - if (OS.IsWinCE) { - /* - * Feature in Windows. On Windows CE, DeferWindowPos always causes - * a WM_SIZE message, even when the new size is the same as the old - * size. The fix is to detect that the size has not changed and set - * SWP_NOSIZE. - */ - if ((uFlags & OS.SWP_NOSIZE) == 0) { - RECT lpRect = new RECT (); - OS.GetWindowRect (hWnd, lpRect); - if (cy == lpRect.bottom - lpRect.top && cx == lpRect.right - lpRect.left) { - /* - * Feature in Windows. On Windows CE, DeferWindowPos when called - * with SWP_DRAWFRAME always causes a WM_SIZE message, even - * when SWP_NOSIZE is set and when the new size is the same as the - * old size. The fix is to clear SWP_DRAWFRAME when the size is - * the same. - */ - uFlags &= ~OS.SWP_DRAWFRAME; - uFlags |= OS.SWP_NOSIZE; - } - } - } - return OS.DeferWindowPos (hWinPosInfo, hWnd, hWndInsertAfter, X, Y, cx, cy, uFlags); -} - -/** - * 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 () { - /* - * 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 dragDetect (int /*long*/ hwnd, int x, int y, boolean filter, boolean [] detect, boolean [] consume) { - if (consume != null) consume [0] = false; - if (detect != null) detect [0] = true; - POINT pt = new POINT (); - pt.x = x; - pt.y = y; - OS.ClientToScreen (hwnd, pt); - return OS.DragDetect (hwnd, pt); -} - -/** - * 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); -} - -Widget findItem (int /*long*/ id) { - return null; -} - -char [] fixMnemonic (String string) { - return fixMnemonic (string, false); -} - -char [] fixMnemonic (String string, boolean spaces) { - char [] buffer = new char [string.length () + 1]; - string.getChars (0, string.length (), buffer, 0); - int i = 0, j = 0; - while (i < buffer.length) { - if (buffer [i] == '&') { - if (i + 1 < buffer.length && buffer [i + 1] == '&') { - if (spaces) buffer [j] = ' '; - j++; - i++; - } - i++; - } else { - buffer [j++] = buffer [i++]; - } - } - while (j < buffer.length) buffer [j++] = 0; - return buffer; -} - -/** - * 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; -} - -/* - * 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 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 /*long*/ hwnd, Event event) { -} - -GC new_GC (GCData data) { - return null; -} - -/** - * 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); -} - -/* - * Releases the widget hierarchy 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; -} - -/* - * 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 () { - 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 - */ -protected void removeListener (int eventType, SWTEventListener 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 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 button, int x, int y) { - Event event = new Event (); - event.button = button; - event.x = x; - event.y = y; - setInputState (event, SWT.DragDetect); - postEvent (SWT.DragDetect, event); - if (isDisposed ()) return false; - return event.doit; -} - -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); - if (isDisposed ()) return false; - 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 msg, int /*long*/ wParam, int /*long*/ lParam) { - Event event = new Event (); - if (!setKeyState (event, type, wParam, lParam)) return true; - return sendKeyEvent (type, msg, wParam, lParam, event); -} - -boolean sendKeyEvent (int type, int msg, int /*long*/ wParam, int /*long*/ lParam, Event event) { - sendEvent (type, event); - if (isDisposed ()) return false; - return event.doit; -} - -boolean sendMouseEvent (int type, int button, int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) { - return sendMouseEvent (type, button, display.getClickCount (type, button, hwnd, lParam), 0, false, hwnd, msg, wParam, lParam); -} - -boolean sendMouseEvent (int type, int button, int count, int detail, boolean send, int /*long*/ hwnd, int msg, int /*long*/ wParam, int /*long*/ lParam) { - if (!hooks (type) && !filters (type)) return true; - Event event = new Event (); - event.button = button; - event.detail = detail; - event.count = count; - event.x = OS.GET_X_LPARAM (lParam); - event.y = OS.GET_Y_LPARAM (lParam); - setInputState (event, type); - mapEvent (hwnd, event); - if (send) { - sendEvent (type, event); - if (isDisposed ()) return false; - } else { - postEvent (type, event); - } - 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 & 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; - } - } - } - } -} - -boolean sendFocusEvent (int type) { - sendEvent (type); - // widget could be disposed at this point - return true; -} - -boolean setInputState (Event event, int type) { - if (OS.GetKeyState (OS.VK_MENU) < 0) event.stateMask |= SWT.ALT; - if (OS.GetKeyState (OS.VK_SHIFT) < 0) event.stateMask |= SWT.SHIFT; - if (OS.GetKeyState (OS.VK_CONTROL) < 0) event.stateMask |= SWT.CONTROL; - if (OS.GetKeyState (OS.VK_LBUTTON) < 0) event.stateMask |= SWT.BUTTON1; - if (OS.GetKeyState (OS.VK_MBUTTON) < 0) event.stateMask |= SWT.BUTTON2; - if (OS.GetKeyState (OS.VK_RBUTTON) < 0) event.stateMask |= SWT.BUTTON3; - /* - * Bug in Windows. On some machines that do not have XBUTTONs, - * the MK_XBUTTON1 and OS.MK_XBUTTON2 bits are sometimes set, - * causing mouse capture to become stuck. The fix is to test - * for the extra buttons only when they exist. - */ - if (display.xMouse) { - if (OS.GetKeyState (OS.VK_XBUTTON1) < 0) event.stateMask |= SWT.BUTTON4; - if (OS.GetKeyState (OS.VK_XBUTTON2) < 0) 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 /*long*/ wParam, int /*long*/ lParam) { - - /* - * Feature in Windows. When the user presses Ctrl+Backspace - * or Ctrl+Enter, Windows sends a WM_CHAR with Delete (0x7F) - * and '\n' instead of '\b' and '\r'. This is the correct - * platform behavior but is not portable. The fix is to detect - * these cases and convert the character. - */ - switch (display.lastAscii) { - case SWT.DEL: - if (display.lastKey == SWT.BS) display.lastAscii = SWT.BS; - break; - case SWT.LF: - if (display.lastKey == SWT.CR) display.lastAscii = SWT.CR; - break; - } - - /* - * Feature in Windows. When the user presses either the Enter - * key or the numeric keypad Enter key, Windows sends a WM_KEYDOWN - * with wParam=VK_RETURN in both cases. In order to distinguish - * between the keys, the extended key bit is tested. If the bit - * is set, assume that the numeric keypad Enter was pressed. - */ - if (display.lastKey == SWT.CR && display.lastAscii == SWT.CR) { - if ((lParam & 0x1000000) != 0) display.lastKey = SWT.KEYPAD_CR; - } - - if (display.lastVirtual) { - /* - * Feature in Windows. The virtual key VK_DELETE is not - * treated as both a virtual key and an ASCII key by Windows. - * Therefore, we will not receive a WM_CHAR for this key. - * The fix is to treat VK_DELETE as a special case and map - * the ASCII value explicitly (Delete is 0x7F). - */ - if (display.lastKey == OS.VK_DELETE) display.lastAscii = 0x7F; - - /* - * Feature in Windows. When the user presses Ctrl+Pause, the - * VK_CANCEL key is generated and a WM_CHAR is sent with 0x03, - * possibly to allow an application to look for Ctrl+C and the - * the Break key at the same time. This is unexpected and - * unwanted. The fix is to detect the case and set the character - * to zero. - */ - if (display.lastKey == OS.VK_CANCEL) display.lastAscii = 0x0; - - event.keyCode = Display.translateKey (display.lastKey); - } else { - event.keyCode = display.lastKey; - } - if (display.lastAscii != 0 || display.lastNull) { - event.character = Display.mbcsToWcs ((char) display.lastAscii); - } - if (event.keyCode == 0 && event.character == 0) { - if (!display.lastNull) return false; - } - return setInputState (event, type); -} - -boolean setTabGroupFocus () { - return setTabItemFocus (); -} - -boolean setTabItemFocus () { - return false; -} - -boolean SetWindowPos (int /*long*/ hWnd, int /*long*/ hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags) { - if (OS.IsWinCE) { - /* - * Feature in Windows. On Windows CE, SetWindowPos() always causes - * a WM_SIZE message, even when the new size is the same as the old - * size. The fix is to detect that the size has not changed and set - * SWP_NOSIZE. - */ - if ((uFlags & OS.SWP_NOSIZE) == 0) { - RECT lpRect = new RECT (); - OS.GetWindowRect (hWnd, lpRect); - if (cy == lpRect.bottom - lpRect.top && cx == lpRect.right - lpRect.left) { - /* - * Feature in Windows. On Windows CE, SetWindowPos() when called - * with SWP_DRAWFRAME always causes a WM_SIZE message, even - * when SWP_NOSIZE is set and when the new size is the same as the - * old size. The fix is to clear SWP_DRAWFRAME when the size is - * the same. - */ - uFlags &= ~OS.SWP_DRAWFRAME; - uFlags |= OS.SWP_NOSIZE; - } - } - } - return OS.SetWindowPos (hWnd, hWndInsertAfter, X, Y, cx, cy, uFlags); -} - -boolean showMenu (int x, int y) { - Event event = new Event (); - event.x = x; - event.y = y; - sendEvent (SWT.MenuDetect, event); - // widget could be disposed at this point - if (isDisposed ()) return false; - 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; -} - -/** - * 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 + "}"; //$NON-NLS-1$ //$NON-NLS-2$ -} - -LRESULT wmCaptureChanged (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - display.captureChanged = true; - return null; -} - -LRESULT wmChar (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Do not report a lead byte as a key pressed. - */ - if (!OS.IsUnicode && OS.IsDBLocale) { - byte lead = (byte) (wParam & 0xFF); - if (OS.IsDBCSLeadByte (lead)) return null; - } - display.lastAscii = (int)/*64*/wParam; - display.lastNull = wParam == 0; - if (!sendKeyEvent (SWT.KeyDown, OS.WM_CHAR, wParam, lParam)) { - return LRESULT.ONE; - } - // widget could be disposed at this point - return null; -} - -LRESULT wmContextMenu (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - if (wParam != hwnd) return null; - - /* - * Feature in Windows. SHRecognizeGesture() sends an undocumented - * WM_CONTEXTMENU notification when the flag SHRG_NOTIFY_PARENT is - * not set. This causes the context menu to be displayed twice, - * once by the caller of SHRecognizeGesture() and once from this - * method. The fix is to ignore WM_CONTEXTMENU notifications on - * all WinCE platforms. - * - * NOTE: This only happens on WM2003. Previous WinCE versions did - * not support WM_CONTEXTMENU. - */ - if (OS.IsWinCE) return null; - - /* - * Feature in Windows. When the user presses WM_NCRBUTTONUP, - * a WM_CONTEXTMENU message is generated. This happens when - * the user releases the mouse over a scroll bar. Normally, - * window displays the default scrolling menu but applications - * can process WM_CONTEXTMENU to display a different menu. - * Typically, an application does not want to supply a special - * scroll menu. The fix is to look for a WM_CONTEXTMENU that - * originated from a mouse event and display the menu when the - * mouse was released in the client area. - */ - int x = 0, y = 0; - if (lParam != -1) { - POINT pt = new POINT (); - OS.POINTSTOPOINT (pt, lParam); - x = pt.x; - y = pt.y; - OS.ScreenToClient (hwnd, pt); - RECT rect = new RECT (); - OS.GetClientRect (hwnd, rect); - if (!OS.PtInRect (rect, pt)) return null; - } else { - int pos = OS.GetMessagePos (); - x = OS.GET_X_LPARAM (pos); - y = OS.GET_Y_LPARAM (pos); - } - - /* Show the menu */ - return showMenu (x, y) ? LRESULT.ZERO : null; -} - -LRESULT wmIMEChar (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - display.lastKey = 0; - display.lastAscii = (int)/*64*/wParam; - display.lastVirtual = display.lastNull = display.lastDead = false; - if (!sendKeyEvent (SWT.KeyDown, OS.WM_IME_CHAR, wParam, lParam)) { - return LRESULT.ONE; - } - sendKeyEvent (SWT.KeyUp, OS.WM_IME_CHAR, wParam, lParam); - // widget could be disposed at this point - display.lastKey = display.lastAscii = 0; - return LRESULT.ONE; -} - -LRESULT wmKeyDown (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - - /* Ignore repeating modifier keys by testing key down state */ - switch ((int)/*64*/wParam) { - case OS.VK_SHIFT: - case OS.VK_MENU: - case OS.VK_CONTROL: - case OS.VK_CAPITAL: - case OS.VK_NUMLOCK: - case OS.VK_SCROLL: - if ((lParam & 0x40000000) != 0) return null; - } - - /* Clear last key and last ascii because a new key has been typed */ - display.lastAscii = display.lastKey = 0; - display.lastVirtual = display.lastNull = display.lastDead = false; - - /* - * Do not report a lead byte as a key pressed. - */ - if (!OS.IsUnicode && OS.IsDBLocale) { - byte lead = (byte) (wParam & 0xFF); - if (OS.IsDBCSLeadByte (lead)) return null; - } - - /* Map the virtual key */ - /* - * Bug in WinCE. MapVirtualKey() returns incorrect values. - * The fix is to rely on a key mappings table to determine - * whether the key event must be sent now or if a WM_CHAR - * event will follow. The key mappings table maps virtual - * keys to SWT key codes and does not contain mappings for - * Windows virtual keys like VK_A. Virtual keys that are - * both virtual and ASCII are a special case. - */ - int mapKey = 0; - if (OS.IsWinCE) { - switch ((int)/*64*/wParam) { - case OS.VK_BACK: mapKey = SWT.BS; break; - case OS.VK_RETURN: mapKey = SWT.CR; break; - case OS.VK_DELETE: mapKey = SWT.DEL; break; - case OS.VK_ESCAPE: mapKey = SWT.ESC; break; - case OS.VK_TAB: mapKey = SWT.TAB; break; - } - } else { - /* - * Feature in Windows. For numbers in Marathi and Bengali, - * MapVirtualKey() returns the localized number instead of - * the ASCII equivalent. For example, MapVirtualKey() - * maps VK_1 on the Marathi keyboard to \u2407, which is - * a valid Unicode Marathi '1' character, but not ASCII. - * The fix is to test for VK_0 to VK_9 and map these - * explicitly. - * - * NOTE: VK_0 to VK_9 are the same as ASCII. - */ - if ('0' <= wParam && wParam <= '9') { - mapKey = (int)/*64*/wParam; - } else { - mapKey = OS.MapVirtualKey ((int)/*64*/wParam, 2); - } - } - - /* - * Bug in Windows 95 and NT. When the user types an accent key such - * as ^ to get an accented character on a German keyboard, the accent - * key should be ignored and the next key that the user types is the - * accented key. The fix is to detect the accent key stroke (called - * a dead key) by testing the high bit of the value returned by - * MapVirtualKey(). A further problem is that the high bit on - * Windows NT is bit 32 while the high bit on Windows 95 is bit 16. - * They should both be bit 32. - * - * When the user types an accent key that does not correspond to a - * virtual key, MapVirtualKey() won't set the high bit to indicate - * a dead key. This happens when an accent key, such as '^' is the - * result of a modifier such as Shift key and MapVirtualKey() always - * returns the unshifted key. The fix is to peek for a WM_DEADCHAR - * and avoid issuing the event. - */ - if (OS.IsWinNT) { - if ((mapKey & 0x80000000) != 0) return null; - } else { - if ((mapKey & 0x8000) != 0) return null; - } - MSG msg = new MSG (); - int flags = OS.PM_NOREMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE; - if (OS.PeekMessage (msg, hwnd, OS.WM_DEADCHAR, OS.WM_DEADCHAR, flags)) { - display.lastDead = true; - display.lastVirtual = mapKey == 0; - display.lastKey = display.lastVirtual ? (int)/*64*/wParam : mapKey; - return null; - } - - /* - * Bug in Windows. Somehow, the widget is becoming disposed after - * calling PeekMessage(). In rare circumstances, it seems that - * PeekMessage() can allow SWT listeners to run that might contain - * application code that disposes the widget. It is not exactly - * clear how this can happen. PeekMessage() is only looking for - * WM_DEADCHAR. It is not dispatching any message that it finds - * or removing any message from the queue. Cross-thread messages - * are disabled. The fix is to check for a disposed widget and - * return without calling the window proc. - */ - if (isDisposed ()) return LRESULT.ONE; - - /* - * If we are going to get a WM_CHAR, ensure that last key has - * the correct character value for the key down and key up - * events. It is not sufficient to ignore the WM_KEYDOWN - * (when we know we are going to get a WM_CHAR) and compute - * the key in WM_CHAR because there is not enough information - * by the time we get the WM_CHAR. For example, when the user - * types Ctrl+Shift+6 on a US keyboard, we get a WM_CHAR with - * wParam=30. When the user types Ctrl+Shift+6 on a German - * keyboard, we also get a WM_CHAR with wParam=30. On the US - * keyboard Shift+6 is ^, on the German keyboard Shift+6 is &. - * There is no way to map wParam=30 in WM_CHAR to the correct - * value. Also, on international keyboards, the control key - * may be down when the user has not entered a control character. - * - * NOTE: On Windows 98, keypad keys are virtual despite the - * fact that a WM_CHAR is issued. On Windows 2000 and XP, - * they are not virtual. Therefore it is necessary to force - * numeric keypad keys to be virtual. - */ - display.lastVirtual = mapKey == 0 || display.numpadKey ((int)/*64*/wParam) != 0; - if (display.lastVirtual) { - display.lastKey = (int)/*64*/wParam; - /* - * Feature in Windows. The virtual key VK_DELETE is not - * treated as both a virtual key and an ASCII key by Windows. - * Therefore, we will not receive a WM_CHAR for this key. - * The fix is to treat VK_DELETE as a special case and map - * the ASCII value explicitly (Delete is 0x7F). - */ - if (display.lastKey == OS.VK_DELETE) display.lastAscii = 0x7F; - - /* - * It is possible to get a WM_CHAR for a virtual key when - * Num Lock is on. If the user types Home while Num Lock - * is down, a WM_CHAR is issued with WPARM=55 (for the - * character 7). If we are going to get a WM_CHAR we need - * to ensure that the last key has the correct value. Note - * that Ctrl+Home does not issue a WM_CHAR when Num Lock is - * down. - */ - if (OS.VK_NUMPAD0 <= display.lastKey && display.lastKey <= OS.VK_DIVIDE) { - /* - * Feature in Windows. Calling to ToAscii() or ToUnicode(), clears - * the accented state such that the next WM_CHAR loses the accent. - * This makes is critical that the accent key is detected. Also, - * these functions clear the character that is entered using the - * special Windows keypad sequence when NumLock is down (ie. typing - * ALT+0231 should gives 'c' with a cedilla when NumLock is down). - */ - if (display.asciiKey (display.lastKey) != 0) return null; - display.lastAscii = display.numpadKey (display.lastKey); - } - } else { - /* - * Convert LastKey to lower case because Windows non-virtual - * keys that are also ASCII keys, such as like VK_A, are have - * upper case values in WM_KEYDOWN despite the fact that the - * Shift was not pressed. - */ - display.lastKey = (int)/*64*/OS.CharLower ((short) mapKey); - - /* - * Feature in Windows. The virtual key VK_CANCEL is treated - * as both a virtual key and ASCII key by Windows. This - * means that a WM_CHAR with WPARAM=3 will be issued for - * this key. In order to distinguish between this key and - * Ctrl+C, mark the key as virtual. - */ - if (wParam == OS.VK_CANCEL) display.lastVirtual = true; - - /* - * Some key combinations map to Windows ASCII keys depending - * on the keyboard. For example, Ctrl+Alt+Q maps to @ on a - * German keyboard. If the current key combination is special, - * the correct character is placed in wParam for processing in - * WM_CHAR. If this is the case, issue the key down event from - * inside WM_CHAR. - */ - int asciiKey = display.asciiKey ((int)/*64*/wParam); - if (asciiKey != 0) { - /* - * When the user types Ctrl+Space, ToAscii () maps this to - * Space. Normally, ToAscii () maps a key to a different - * key if both a WM_KEYDOWN and a WM_CHAR will be issued. - * To avoid the extra SWT.KeyDown, look for a space and - * issue the event from WM_CHAR. - */ - if (asciiKey == ' ') return null; - if (asciiKey != (int)/*64*/wParam) return null; - /* - * Feature in Windows. The virtual key VK_CANCEL is treated - * as both a virtual key and ASCII key by Windows. This - * means that a WM_CHAR with WPARAM=3 will be issued for - * this key. To avoid the extra SWT.KeyDown, look for - * VK_CANCEL and issue the event from WM_CHAR. - */ - if (wParam == OS.VK_CANCEL) return null; - } - - /* - * If the control key is not down at this point, then - * the key that was pressed was an accent key or a regular - * key such as 'A' or Shift+A. In that case, issue the - * key event from WM_CHAR. - */ - if (OS.GetKeyState (OS.VK_CONTROL) >= 0) return null; - - /* - * Get the shifted state or convert to lower case if necessary. - * If the user types Ctrl+A, LastAscii should be 'a', not 'A'. - * If the user types Ctrl+Shift+A, LastAscii should be 'A'. - * If the user types Ctrl+Shift+6, the value of LastAscii will - * depend on the international keyboard. - */ - if (OS.GetKeyState (OS.VK_SHIFT) < 0) { - display.lastAscii = display.shiftedKey ((int)/*64*/wParam); - if (display.lastAscii == 0) display.lastAscii = mapKey; - } else { - display.lastAscii = (int)/*64*/OS.CharLower ((short) mapKey); - } - - /* Note that Ctrl+'@' is ASCII NUL and is delivered in WM_CHAR */ - if (display.lastAscii == '@') return null; - display.lastAscii = display.controlKey (display.lastAscii); - } - if (!sendKeyEvent (SWT.KeyDown, OS.WM_KEYDOWN, wParam, lParam)) { - return LRESULT.ONE; - } - // widget could be disposed at this point - return null; -} - -LRESULT wmKeyUp (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - - /* Check for hardware keys */ - if (OS.IsWinCE) { - if (OS.VK_APP1 <= wParam && wParam <= OS.VK_APP6) { - display.lastKey = display.lastAscii = 0; - display.lastVirtual = display.lastNull = display.lastDead = false; - Event event = new Event (); - event.detail = (int)/*64*/wParam - OS.VK_APP1 + 1; - /* Check the bit 30 to get the key state */ - int type = (lParam & 0x40000000) != 0 ? SWT.HardKeyUp : SWT.HardKeyDown; - if (setInputState (event, type)) sendEvent (type, event); - // widget could be disposed at this point - return null; - } - } - - /* - * If the key up is not hooked, reset last key - * and last ascii in case the key down is hooked. - */ - if (!hooks (SWT.KeyUp) && !display.filters (SWT.KeyUp)) { - display.lastKey = display.lastAscii = 0; - display.lastVirtual = display.lastNull = display.lastDead = false; - return null; - } - - /* Map the virtual key. */ - /* - * Bug in WinCE. MapVirtualKey() returns incorrect values. - * The fix is to rely on a key mappings table to determine - * whether the key event must be sent now or if a WM_CHAR - * event will follow. The key mappings table maps virtual - * keys to SWT key codes and does not contain mappings for - * Windows virtual keys like VK_A. Virtual keys that are - * both virtual and ASCII are a special case. - */ - int mapKey = 0; - if (OS.IsWinCE) { - switch ((int)/*64*/wParam) { - case OS.VK_BACK: mapKey = SWT.BS; break; - case OS.VK_RETURN: mapKey = SWT.CR; break; - case OS.VK_DELETE: mapKey = SWT.DEL; break; - case OS.VK_ESCAPE: mapKey = SWT.ESC; break; - case OS.VK_TAB: mapKey = SWT.TAB; break; - } - } else { - mapKey = OS.MapVirtualKey ((int)/*64*/wParam, 2); - } - - /* - * Bug in Windows 95 and NT. When the user types an accent key such - * as ^ to get an accented character on a German keyboard, the accent - * key should be ignored and the next key that the user types is the - * accented key. The fix is to detect the accent key stroke (called - * a dead key) by testing the high bit of the value returned by - * MapVirtualKey (). A further problem is that the high bit on - * Windows NT is bit 32 while the high bit on Windows 95 is bit 16. - * They should both be bit 32. - */ - if (OS.IsWinNT) { - if ((mapKey & 0x80000000) != 0) return null; - } else { - if ((mapKey & 0x8000) != 0) return null; - } - if (display.lastDead) return null; - - /* - * NOTE: On Windows 98, keypad keys are virtual despite the - * fact that a WM_CHAR is issued. On Windows 2000 and XP, - * they are not virtual. Therefore it is necessary to force - * numeric keypad keys to be virtual. - */ - display.lastVirtual = mapKey == 0 || display.numpadKey ((int)/*64*/wParam) != 0; - if (display.lastVirtual) { - display.lastKey = (int)/*64*/wParam; - } else { - /* - * Feature in Windows. The virtual key VK_CANCEL is treated - * as both a virtual key and ASCII key by Windows. This - * means that a WM_CHAR with WPARAM=3 will be issued for - * this key. In order to distinguish between this key and - * Ctrl+C, mark the key as virtual. - */ - if (wParam == OS.VK_CANCEL) display.lastVirtual = true; - if (display.lastKey == 0) { - display.lastAscii = 0; - display.lastNull = display.lastDead = false; - return null; - } - } - LRESULT result = null; - if (!sendKeyEvent (SWT.KeyUp, OS.WM_KEYUP, wParam, lParam)) { - result = LRESULT.ONE; - } - // widget could be disposed at this point - display.lastKey = display.lastAscii = 0; - display.lastVirtual = display.lastNull = display.lastDead = false; - return result; -} - -LRESULT wmKillFocus (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - display.scrollRemainder = 0; - int /*long*/ code = callWindowProc (hwnd, OS.WM_KILLFOCUS, wParam, lParam); - sendFocusEvent (SWT.FocusOut); - // widget could be disposed at this point - - /* - * It is possible (but unlikely), that application - * code could have disposed the widget in the focus - * or deactivate events. If this happens, end the - * processing of the Windows message by returning - * zero as the result of the window proc. - */ - if (isDisposed ()) return LRESULT.ZERO; - if (code == 0) return LRESULT.ZERO; - return new LRESULT (code); -} - -LRESULT wmLButtonDblClk (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Feature in Windows. Windows sends the following - * messages when the user double clicks the mouse: - * - * WM_LBUTTONDOWN - mouse down - * WM_LBUTTONUP - mouse up - * WM_LBUTTONDBLCLK - double click - * WM_LBUTTONUP - mouse up - * - * Applications that expect matching mouse down/up - * pairs will not see the second mouse down. The - * fix is to send a mouse down event. - */ - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - sendMouseEvent (SWT.MouseDown, 1, hwnd, OS.WM_LBUTTONDOWN, wParam, lParam); - if (sendMouseEvent (SWT.MouseDoubleClick, 1, hwnd, OS.WM_LBUTTONDBLCLK, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_LBUTTONDBLCLK, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmLButtonDown (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - LRESULT result = null; - int x = OS.GET_X_LPARAM (lParam); - int y = OS.GET_Y_LPARAM (lParam); - boolean [] consume = null, detect = null; - boolean dragging = false, mouseDown = true; - int count = display.getClickCount (SWT.MouseDown, 1, hwnd, lParam); - if (count == 1 && (state & DRAG_DETECT) != 0 && hooks (SWT.DragDetect)) { - if (!OS.IsWinCE) { - /* - * Feature in Windows. It's possible that the drag - * operation will not be started while the mouse is - * down, meaning that the mouse should be captured. - * This can happen when the user types the ESC key - * to cancel the drag. The fix is to query the state - * of the mouse and capture the mouse accordingly. - */ - detect = new boolean [1]; - consume = new boolean [1]; - dragging = dragDetect (hwnd, x, y, true, detect, consume); - if (isDisposed ()) return LRESULT.ZERO; - mouseDown = OS.GetKeyState (OS.VK_LBUTTON) < 0; - } - } - display.captureChanged = false; - boolean dispatch = sendMouseEvent (SWT.MouseDown, 1, count, 0, false, hwnd, OS.WM_LBUTTONDOWN, wParam, lParam); - if (dispatch && (consume == null || !consume [0])) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_LBUTTONDOWN, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (OS.IsPPC) { - /* - * Note: On WinCE PPC, only attempt to recognize the gesture for - * a context menu when the control contains a valid menu or there - * are listeners for the MenuDetect event. - */ - Menu menu = getMenu (); - boolean hasMenu = menu != null && !menu.isDisposed (); - if (hasMenu || hooks (SWT.MenuDetect)) { - SHRGINFO shrg = new SHRGINFO (); - shrg.cbSize = SHRGINFO.sizeof; - shrg.hwndClient = hwnd; - shrg.ptDown_x = x; - shrg.ptDown_y = y; - shrg.dwFlags = OS.SHRG_RETURNCMD; - int type = OS.SHRecognizeGesture (shrg); - if (type == OS.GN_CONTEXTMENU) showMenu (x, y); - } - } - if (mouseDown) { - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - } - if (dragging) { - sendDragEvent (1, x, y); - } else { - if (detect != null && detect [0]) { - /* - * Feature in Windows. DragDetect() captures the mouse - * and tracks its movement until the user releases the - * left mouse button, presses the ESC key, or moves the - * mouse outside the drag rectangle. If the user moves - * the mouse outside of the drag rectangle, DragDetect() - * returns true and a drag and drop operation can be - * started. When the left mouse button is released or - * the ESC key is pressed, these events are consumed by - * DragDetect() so that application code that matches - * mouse down/up pairs or looks for the ESC key will not - * function properly. The fix is to send the missing - * events when the drag has not started. - * - * NOTE: For now, don't send a fake WM_KEYDOWN/WM_KEYUP - * events for the ESC key. This would require computing - * wParam (the key) and lParam (the repeat count, scan code, - * extended-key flag, context code, previous key-state flag, - * and transition-state flag) which is non-trivial. - */ - if (OS.GetKeyState (OS.VK_ESCAPE) >= 0) { - OS.SendMessage (hwnd, OS.WM_LBUTTONUP, wParam, lParam); - } - } - } - return result; -} - -LRESULT wmLButtonUp (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - LRESULT result = null; - if (sendMouseEvent (SWT.MouseUp, 1, hwnd, OS.WM_LBUTTONUP, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_LBUTTONUP, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - /* - * Bug in Windows. On some machines that do not have XBUTTONs, - * the MK_XBUTTON1 and OS.MK_XBUTTON2 bits are sometimes set, - * causing mouse capture to become stuck. The fix is to test - * for the extra buttons only when they exist. - */ - int mask = OS.MK_LBUTTON | OS.MK_MBUTTON | OS.MK_RBUTTON; - if (display.xMouse) mask |= OS.MK_XBUTTON1 | OS.MK_XBUTTON2; - if ((wParam & mask) == 0) { - if (OS.GetCapture () == hwnd) OS.ReleaseCapture (); - } - return result; -} - -LRESULT wmMButtonDblClk (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Feature in Windows. Windows sends the following - * messages when the user double clicks the mouse: - * - * WM_MBUTTONDOWN - mouse down - * WM_MBUTTONUP - mouse up - * WM_MLBUTTONDBLCLK - double click - * WM_MBUTTONUP - mouse up - * - * Applications that expect matching mouse down/up - * pairs will not see the second mouse down. The - * fix is to send a mouse down event. - */ - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - sendMouseEvent (SWT.MouseDown, 2, hwnd, OS.WM_MBUTTONDOWN, wParam, lParam); - if (sendMouseEvent (SWT.MouseDoubleClick, 2, hwnd, OS.WM_MBUTTONDBLCLK, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_MBUTTONDBLCLK, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmMButtonDown (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - if (sendMouseEvent (SWT.MouseDown, 2, hwnd, OS.WM_MBUTTONDOWN, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_MBUTTONDOWN, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmMButtonUp (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - LRESULT result = null; - if (sendMouseEvent (SWT.MouseUp, 2, hwnd, OS.WM_MBUTTONUP, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_MBUTTONUP, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - /* - * Bug in Windows. On some machines that do not have XBUTTONs, - * the MK_XBUTTON1 and OS.MK_XBUTTON2 bits are sometimes set, - * causing mouse capture to become stuck. The fix is to test - * for the extra buttons only when they exist. - */ - int mask = OS.MK_LBUTTON | OS.MK_MBUTTON | OS.MK_RBUTTON; - if (display.xMouse) mask |= OS.MK_XBUTTON1 | OS.MK_XBUTTON2; - if ((wParam & mask) == 0) { - if (OS.GetCapture () == hwnd) OS.ReleaseCapture (); - } - return result; -} - -LRESULT wmMouseHover (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - if (!sendMouseEvent (SWT.MouseHover, 0, hwnd, OS.WM_MOUSEHOVER, wParam, lParam)) { - return LRESULT.ZERO; - } - return null; -} - -LRESULT wmMouseLeave (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - if (!hooks (SWT.MouseExit) && !filters (SWT.MouseExit)) return null; - int pos = OS.GetMessagePos (); - POINT pt = new POINT (); - OS.POINTSTOPOINT (pt, pos); - OS.ScreenToClient (hwnd, pt); - lParam = OS.MAKELPARAM (pt.x, pt.y); - if (!sendMouseEvent (SWT.MouseExit, 0, hwnd, OS.WM_MOUSELEAVE, wParam, lParam)) { - return LRESULT.ZERO; - } - return null; -} - -LRESULT wmMouseMove (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = null; - Display display = this.display; - int pos = OS.GetMessagePos (); - if (pos != display.lastMouse || display.captureChanged) { - if (!OS.IsWinCE) { - boolean trackMouse = (state & TRACK_MOUSE) != 0; - boolean mouseEnter = hooks (SWT.MouseEnter) || display.filters (SWT.MouseEnter); - boolean mouseExit = hooks (SWT.MouseExit) || display.filters (SWT.MouseExit); - boolean mouseHover = hooks (SWT.MouseHover) || display.filters (SWT.MouseHover); - if (trackMouse || mouseEnter || mouseExit || mouseHover) { - TRACKMOUSEEVENT lpEventTrack = new TRACKMOUSEEVENT (); - lpEventTrack.cbSize = TRACKMOUSEEVENT.sizeof; - lpEventTrack.dwFlags = OS.TME_QUERY; - lpEventTrack.hwndTrack = hwnd; - OS.TrackMouseEvent (lpEventTrack); - if (lpEventTrack.dwFlags == 0) { - lpEventTrack.dwFlags = OS.TME_LEAVE | OS.TME_HOVER; - lpEventTrack.hwndTrack = hwnd; - OS.TrackMouseEvent (lpEventTrack); - if (mouseEnter) { - /* - * Force all outstanding WM_MOUSELEAVE messages to be dispatched before - * issuing a mouse enter. This causes mouse exit events to be processed - * before mouse enter events. Note that WM_MOUSELEAVE is posted to the - * event queue by TrackMouseEvent(). - */ - MSG msg = new MSG (); - int flags = OS.PM_REMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE; - while (OS.PeekMessage (msg, 0, OS.WM_MOUSELEAVE, OS.WM_MOUSELEAVE, flags)) { - OS.TranslateMessage (msg); - OS.DispatchMessage (msg); - } - sendMouseEvent (SWT.MouseEnter, 0, hwnd, OS.WM_MOUSEMOVE, wParam, lParam); - } - } else { - lpEventTrack.dwFlags = OS.TME_HOVER; - OS.TrackMouseEvent (lpEventTrack); - } - } - } - if (pos != display.lastMouse) { - display.lastMouse = pos; - if (!sendMouseEvent (SWT.MouseMove, 0, hwnd, OS.WM_MOUSEMOVE, wParam, lParam)) { - result = LRESULT.ZERO; - } - } - } - display.captureChanged = false; - return result; -} - -LRESULT wmMouseWheel (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - int delta = OS.GET_WHEEL_DELTA_WPARAM (wParam); - int [] linesToScroll = new int [1]; - int detail; - OS.SystemParametersInfo (OS.SPI_GETWHEELSCROLLLINES, 0, linesToScroll, 0); - if (linesToScroll [0] == OS.WHEEL_PAGESCROLL) { - detail = SWT.SCROLL_PAGE; - } else { - detail = SWT.SCROLL_LINE; - delta *= linesToScroll [0]; - } - /* Check if the delta and the remainder have the same direction (sign) */ - if ((delta ^ display.scrollRemainder) >= 0) delta += display.scrollRemainder; - display.scrollRemainder = delta % OS.WHEEL_DELTA; - - if (!hooks (SWT.MouseWheel) && !filters (SWT.MouseWheel)) return null; - int count = delta / OS.WHEEL_DELTA; - POINT pt = new POINT (); - OS.POINTSTOPOINT (pt, lParam); - OS.ScreenToClient (hwnd, pt); - lParam = OS.MAKELPARAM (pt.x, pt.y); - if (!sendMouseEvent (SWT.MouseWheel, 0, count, detail, true, hwnd, OS.WM_MOUSEWHEEL, wParam, lParam)) { - return LRESULT.ZERO; - } - return null; -} - -LRESULT wmNCPaint (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - return null; -} - -LRESULT wmPaint (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - - /* Exit early - don't draw the background */ - if (!hooks (SWT.Paint) && !filters (SWT.Paint)) { - return null; - } - - /* Issue a paint event */ - int /*long*/ result = 0; - if (OS.IsWinCE) { - RECT rect = new RECT (); - OS.GetUpdateRect (hwnd, rect, false); - result = callWindowProc (hwnd, OS.WM_PAINT, wParam, lParam); - /* - * Bug in Windows. When InvalidateRgn(), InvalidateRect() - * or RedrawWindow() with RDW_INVALIDATE is called from - * within WM_PAINT to invalidate a region for a further - * BeginPaint(), the caret is not properly erased causing - * pixel corruption. The fix is to hide and show the - * caret. - */ - OS.HideCaret (hwnd); - OS.InvalidateRect (hwnd, rect, false); - OS.ShowCaret (hwnd); - PAINTSTRUCT ps = new PAINTSTRUCT (); - GCData data = new GCData (); - data.ps = ps; - data.hwnd = hwnd; - GC gc = new_GC (data); - if (gc != null) { - int width = ps.right - ps.left; - int height = ps.bottom - ps.top; - if (width != 0 && height != 0) { - Event event = new Event (); - event.gc = gc; - event.x = ps.left; - event.y = ps.top; - event.width = width; - event.height = height; - sendEvent (SWT.Paint, event); - // widget could be disposed at this point - event.gc = null; - } - gc.dispose (); - } - } else { - int /*long*/ rgn = OS.CreateRectRgn (0, 0, 0, 0); - OS.GetUpdateRgn (hwnd, rgn, false); - result = callWindowProc (hwnd, OS.WM_PAINT, wParam, lParam); - GCData data = new GCData (); - data.hwnd = hwnd; - GC gc = new_GC (data); - if (gc != null) { - OS.HideCaret (hwnd); - RECT rect = new RECT(); - OS.GetRgnBox (rgn, rect); - int width = rect.right - rect.left; - int height = rect.bottom - rect.top; - if (width != 0 && height != 0) { - int /*long*/ hDC = gc.handle; - OS.SelectClipRgn (hDC, rgn); - OS.SetMetaRgn (hDC); - Event event = new Event (); - event.gc = gc; - event.x = rect.left; - event.y = rect.top; - event.width = width; - event.height = height; - sendEvent (SWT.Paint, event); - // widget could be disposed at this point - event.gc = null; - } - gc.dispose (); - OS.ShowCaret (hwnd); - } - OS.DeleteObject (rgn); - } - if (result == 0) return LRESULT.ZERO; - return new LRESULT (result); -} - -LRESULT wmPrint (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Bug in Windows. When WM_PRINT is used to print the contents - * of a control that has WS_EX_CLIENTEDGE, the old 3D border is - * drawn instead of the theme border. The fix is to call the - * default window proc and then draw the theme border on top. - */ - if ((lParam & OS.PRF_NONCLIENT) != 0) { - if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) { - int bits = OS.GetWindowLong (hwnd, OS.GWL_EXSTYLE); - if ((bits & OS.WS_EX_CLIENTEDGE) != 0) { - int /*long*/ code = callWindowProc (hwnd, OS.WM_PRINT, wParam, lParam); - RECT rect = new RECT (); - OS.GetWindowRect (hwnd, rect); - rect.right -= rect.left; - rect.bottom -= rect.top; - rect.left = rect.top = 0; - int border = OS.GetSystemMetrics (OS.SM_CXEDGE); - OS.ExcludeClipRect (wParam, border, border, rect.right - border, rect.bottom - border); - OS.DrawThemeBackground (display.hEditTheme (), wParam, OS.EP_EDITTEXT, OS.ETS_NORMAL, rect, null); - return new LRESULT (code); - } - } - } - return null; -} - -LRESULT wmRButtonDblClk (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Feature in Windows. Windows sends the following - * messages when the user double clicks the mouse: - * - * WM_RBUTTONDOWN - mouse down - * WM_RBUTTONUP - mouse up - * WM_RBUTTONDBLCLK - double click - * WM_LBUTTONUP - mouse up - * - * Applications that expect matching mouse down/up - * pairs will not see the second mouse down. The - * fix is to send a mouse down event. - */ - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - sendMouseEvent (SWT.MouseDown, 3, hwnd, OS.WM_RBUTTONDOWN, wParam, lParam); - if (sendMouseEvent (SWT.MouseDoubleClick, 3, hwnd, OS.WM_RBUTTONDBLCLK, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_RBUTTONDBLCLK, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmRButtonDown (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - if (sendMouseEvent (SWT.MouseDown, 3, hwnd, OS.WM_RBUTTONDOWN, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_RBUTTONDOWN, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmRButtonUp (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - LRESULT result = null; - if (sendMouseEvent (SWT.MouseUp, 3, hwnd, OS.WM_RBUTTONUP, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_RBUTTONUP, wParam, lParam)); - } else { - /* Call the DefWindowProc() to support WM_CONTEXTMENU */ - OS.DefWindowProc (hwnd, OS.WM_RBUTTONUP, wParam, lParam); - result = LRESULT.ZERO; - } - /* - * Bug in Windows. On some machines that do not have XBUTTONs, - * the MK_XBUTTON1 and OS.MK_XBUTTON2 bits are sometimes set, - * causing mouse capture to become stuck. The fix is to test - * for the extra buttons only when they exist. - */ - int mask = OS.MK_LBUTTON | OS.MK_MBUTTON | OS.MK_RBUTTON; - if (display.xMouse) mask |= OS.MK_XBUTTON1 | OS.MK_XBUTTON2; - if ((wParam & mask) == 0) { - if (OS.GetCapture () == hwnd) OS.ReleaseCapture (); - } - return result; -} - -LRESULT wmSetFocus (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - int /*long*/ code = callWindowProc (hwnd, OS.WM_SETFOCUS, wParam, lParam); - sendFocusEvent (SWT.FocusIn); - // widget could be disposed at this point - - /* - * It is possible (but unlikely), that application - * code could have disposed the widget in the focus - * or activate events. If this happens, end the - * processing of the Windows message by returning - * zero as the result of the window proc. - */ - if (isDisposed ()) return LRESULT.ZERO; - if (code == 0) return LRESULT.ZERO; - return new LRESULT (code); -} - -LRESULT wmSysChar (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - display.lastAscii = (int)/*64*/wParam; - display.lastNull = wParam == 0; - - /* Do not issue a key down if a menu bar mnemonic was invoked */ - if (!hooks (SWT.KeyDown) && !display.filters (SWT.KeyDown)) { - return null; - } - - /* Call the window proc to determine whether it is a system key or mnemonic */ - boolean oldKeyHit = display.mnemonicKeyHit; - display.mnemonicKeyHit = true; - int /*long*/ result = callWindowProc (hwnd, OS.WM_SYSCHAR, wParam, lParam); - boolean consumed = false; - if (!display.mnemonicKeyHit) { - consumed = !sendKeyEvent (SWT.KeyDown, OS.WM_SYSCHAR, wParam, lParam); - // widget could be disposed at this point - } - consumed |= display.mnemonicKeyHit; - display.mnemonicKeyHit = oldKeyHit; - return consumed ? LRESULT.ONE : new LRESULT (result); -} - -LRESULT wmSysKeyDown (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Feature in Windows. When WM_SYSKEYDOWN is sent, - * the user pressed ALT+<key> or F10 to get to the - * menu bar. In order to issue events for F10 but - * ignore other key presses when the ALT is not down, - * make sure that either F10 was pressed or that ALT - * is pressed. - */ - if (wParam != OS.VK_F10) { - /* Make sure WM_SYSKEYDOWN was sent by ALT-<aKey>. */ - if ((lParam & 0x20000000) == 0) return null; - } - - /* Ignore well known system keys */ - switch ((int)/*64*/wParam) { - case OS.VK_F4: { - int /*long*/ hwndShell = hwnd; - while (OS.GetParent (hwndShell) != 0) { - if (OS.GetWindow (hwndShell, OS.GW_OWNER) != 0) break; - hwndShell = OS.GetParent (hwndShell); - } - int bits = OS.GetWindowLong (hwndShell, OS.GWL_STYLE); - if ((bits & OS.WS_SYSMENU) != 0) return null; - } - } - - /* Ignore repeating modifier keys by testing key down state */ - switch ((int)/*64*/wParam) { - case OS.VK_SHIFT: - case OS.VK_MENU: - case OS.VK_CONTROL: - case OS.VK_CAPITAL: - case OS.VK_NUMLOCK: - case OS.VK_SCROLL: - if ((lParam & 0x40000000) != 0) return null; - } - - /* Clear last key and last ascii because a new key has been typed */ - display.lastAscii = display.lastKey = 0; - display.lastVirtual = display.lastNull = display.lastDead = false; - - /* If are going to get a WM_SYSCHAR, ignore this message. */ - /* - * Bug in WinCE. MapVirtualKey() returns incorrect values. - * The fix is to rely on a key mappings table to determine - * whether the key event must be sent now or if a WM_CHAR - * event will follow. The key mappings table maps virtual - * keys to SWT key codes and does not contain mappings for - * Windows virtual keys like VK_A. Virtual keys that are - * both virtual and ASCII are a special case. - */ - int mapKey = 0; - if (OS.IsWinCE) { - switch ((int)/*64*/wParam) { - case OS.VK_BACK: mapKey = SWT.BS; break; - case OS.VK_RETURN: mapKey = SWT.CR; break; - case OS.VK_DELETE: mapKey = SWT.DEL; break; - case OS.VK_ESCAPE: mapKey = SWT.ESC; break; - case OS.VK_TAB: mapKey = SWT.TAB; break; - } - } else { - mapKey = OS.MapVirtualKey ((int)/*64*/wParam, 2); - } - display.lastVirtual = mapKey == 0 || display.numpadKey ((int)/*64*/wParam) != 0; - if (display.lastVirtual) { - display.lastKey = (int)/*64*/wParam; - /* - * Feature in Windows. The virtual key VK_DELETE is not - * treated as both a virtual key and an ASCII key by Windows. - * Therefore, we will not receive a WM_SYSCHAR for this key. - * The fix is to treat VK_DELETE as a special case and map - * the ASCII value explicitly (Delete is 0x7F). - */ - if (display.lastKey == OS.VK_DELETE) display.lastAscii = 0x7F; - - /* When a keypad key is typed, a WM_SYSCHAR is not issued */ - if (OS.VK_NUMPAD0 <= display.lastKey && display.lastKey <= OS.VK_DIVIDE) { - /* - * A WM_SYSCHAR will be issued for '*', '+', '-', '.' and '/' - * on the numeric keypad. Avoid issuing the key event twice - * by checking for these keys. Note that calling to ToAscii() - * or ToUnicode(), clear the character that is entered using - * the special Windows keypad sequence when NumLock is down - * (ie. typing ALT+0231 should gives 'c' with a cedilla when - * NumLock is down). Do not call either of these from here. - */ - switch (display.lastKey) { - case OS.VK_MULTIPLY: - case OS.VK_ADD: - case OS.VK_SUBTRACT: - case OS.VK_DECIMAL: - case OS.VK_DIVIDE: return null; - } - display.lastAscii = display.numpadKey (display.lastKey); - } - } else { - /* - * Convert LastKey to lower case because Windows non-virtual - * keys that are also ASCII keys, such as like VK_A, are have - * upper case values in WM_SYSKEYDOWN despite the fact that the - * Shift was not pressed. - */ - display.lastKey = (int)/*64*/OS.CharLower ((short) mapKey); - - /* - * Feature in Windows 98. MapVirtualKey() indicates that - * a WM_SYSCHAR message will occur for Alt+Enter but - * this message never happens. The fix is to issue the - * event from WM_SYSKEYDOWN and map VK_RETURN to '\r'. - */ - if (OS.IsWinNT) return null; - if (wParam != OS.VK_RETURN) return null; - display.lastAscii = '\r'; - } - - if (!sendKeyEvent (SWT.KeyDown, OS.WM_SYSKEYDOWN, wParam, lParam)) { - return LRESULT.ONE; - } - // widget could be disposed at this point - return null; -} - -LRESULT wmSysKeyUp (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - return wmKeyUp (hwnd, wParam, lParam); -} - -LRESULT wmXButtonDblClk (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - /* - * Feature in Windows. Windows sends the following - * messages when the user double clicks the mouse: - * - * WM_XBUTTONDOWN - mouse down - * WM_XBUTTONUP - mouse up - * WM_XLBUTTONDBLCLK - double click - * WM_XBUTTONUP - mouse up - * - * Applications that expect matching mouse down/up - * pairs will not see the second mouse down. The - * fix is to send a mouse down event. - */ - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - int button = OS.HIWORD (wParam) == OS.XBUTTON1 ? 4 : 5; - sendMouseEvent (SWT.MouseDown, button, hwnd, OS.WM_XBUTTONDOWN, wParam, lParam); - if (sendMouseEvent (SWT.MouseDoubleClick, button, hwnd, OS.WM_XBUTTONDBLCLK, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_XBUTTONDBLCLK, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmXButtonDown (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - LRESULT result = null; - Display display = this.display; - display.captureChanged = false; - display.xMouse = true; - int button = OS.HIWORD (wParam) == OS.XBUTTON1 ? 4 : 5; - if (sendMouseEvent (SWT.MouseDown, button, hwnd, OS.WM_XBUTTONDOWN, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_XBUTTONDOWN, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - if (!display.captureChanged && !isDisposed ()) { - if (OS.GetCapture () != hwnd) OS.SetCapture (hwnd); - } - return result; -} - -LRESULT wmXButtonUp (int /*long*/ hwnd, int /*long*/ wParam, int /*long*/ lParam) { - Display display = this.display; - LRESULT result = null; - int button = OS.HIWORD (wParam) == OS.XBUTTON1 ? 4 : 5; - if (sendMouseEvent (SWT.MouseUp, button, hwnd, OS.WM_XBUTTONUP, wParam, lParam)) { - result = new LRESULT (callWindowProc (hwnd, OS.WM_XBUTTONUP, wParam, lParam)); - } else { - result = LRESULT.ZERO; - } - /* - * Bug in Windows. On some machines that do not have XBUTTONs, - * the MK_XBUTTON1 and OS.MK_XBUTTON2 bits are sometimes set, - * causing mouse capture to become stuck. The fix is to test - * for the extra buttons only when they exist. - */ - int mask = OS.MK_LBUTTON | OS.MK_MBUTTON | OS.MK_RBUTTON; - if (display.xMouse) mask |= OS.MK_XBUTTON1 | OS.MK_XBUTTON2; - if ((wParam & mask) == 0) { - if (OS.GetCapture () == hwnd) OS.ReleaseCapture (); - } - return result; -} -} |