| package org.eclipse.swt.widgets;
|
|
|
| /*
|
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html
|
| */
|
|
|
| import org.eclipse.swt.internal.*;
|
| import org.eclipse.swt.internal.motif.*;
|
| 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
|
| */ |
| public abstract class Widget {
|
| public int handle;
|
| int style, state;
|
| EventTable eventTable;
|
| Object data;
|
| String [] keys;
|
| Object [] values;
|
|
|
| /* Global state flags */
|
| // static final int AUTOMATIC = 0x00000001;
|
| // static final int ACTIVE = 0x00000002;
|
| // static final int AUTOGRAB = 0x00000004;
|
| // static final int MULTIEXPOSE = 0x00000008;
|
| // static final int RESIZEREDRAW = 0x00000010;
|
| // static final int WRAP = 0x00000020;
|
| // static final int DISABLED = 0x00000040;
|
| // static final int HIDDEN = 0x00000080;
|
| // static final int FOREGROUND = 0x00000100;
|
| // static final int BACKGROUND = 0x00000200;
|
| static final int DISPOSED = 0x00000400;
|
| static final int HANDLE = 0x00000800;
|
| static final int CANVAS = 0x00001000;
|
|
|
| static final int DEFAULT_WIDTH = 64;
|
| static final int DEFAULT_HEIGHT = 64;
|
|
|
| /* Global widget variables */
|
| static final char Mnemonic = '&';
|
|
|
| /* DBCS flags */
|
| static final boolean IsDBLocale;
|
| static {
|
| IsDBLocale = OS.MB_CUR_MAX () != 1;
|
| }
|
| Widget () {
|
| /* Do nothing */
|
| }
|
| /** |
| * 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> |
| * </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;
|
| }
|
| /**
|
| * Adds the listener to the collection of listeners who will
|
| * be notifed 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.
|
| *
|
| * @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 #removeListener
|
| */ |
| public void addListener (int eventType, Listener handler) {
|
| checkWidget();
|
| if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) eventTable = new EventTable ();
|
| eventTable.hook (eventType, handler);
|
| }
|
| /**
|
| * Adds the listener to the collection of listeners who will
|
| * be notifed 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);
|
| }
|
| 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 checkParent (Widget parent) {
|
| if (parent == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (!parent.isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (parent.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
|
| }
|
| /**
|
| * 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 () {
|
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
|
| if (isDisposed ()) error (SWT.ERROR_WIDGET_DISPOSED);
|
| }
|
| void createHandle (int index) {
|
| /* Do nothing */
|
| }
|
| void createWidget (int index) {
|
| createHandle (index);
|
| hookEvents ();
|
| register ();
|
| manageChildren ();
|
| }
|
| void deregister () {
|
| if (handle == 0) return;
|
| WidgetTable.remove (handle);
|
| }
|
| void destroyWidget () {
|
| int topHandle = topHandle ();
|
| releaseHandle ();
|
| if (topHandle != 0) {
|
| OS.XtDestroyWidget (topHandle);
|
| }
|
| }
|
| /**
|
| * Disposes of the operating system resources associated with
|
| * the receiver and all its descendents. After this method has
|
| * been invoked, the receiver and all descendents 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 descendents
|
| * 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);
|
| releaseChild ();
|
| releaseWidget ();
|
| destroyWidget ();
|
| }
|
| void enableHandle (boolean enabled, int widgetHandle) {
|
| int [] argList = {OS.XmNsensitive, enabled ? 1 : 0};
|
| OS.XtSetValues (widgetHandle, argList, argList.length / 2);
|
| }
|
| void error (int code) {
|
| SWT.error(code);
|
| }
|
| /**
|
| * 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
|
| */ |
| public Object getData () {
|
| checkWidget();
|
| return 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
|
| */ |
| public Object getData (String key) {
|
| checkWidget();
|
| if (key == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (keys == null) return null;
|
| for (int i=0; i<keys.length; i++) {
|
| if (keys [i].equals (key)) return values [i];
|
| }
|
| 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>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public abstract Display getDisplay ();
|
| String getName () {
|
| String string = getClass ().getName ();
|
| int index = string.lastIndexOf ('.');
|
| if (index == -1) return string;
|
| return string.substring (index + 1, string.length ());
|
| }
|
| String getNameText () {
|
| return "";
|
| }
|
| /**
|
| * 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;
|
| }
|
| void hookEvents () {
|
| /* Do nothing */
|
| }
|
| 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 () {
|
| if (handle != 0) return false;
|
| if ((state & HANDLE) != 0) return true;
|
| return (state & DISPOSED) != 0;
|
| }
|
| /**
|
| * Return the listening state.
|
| * <p>
|
| * Returns true if there is a listener, listening for the eventType.
|
| * Otherwise, returns false.
|
| *
|
| * @param eventType the type of event
|
| * @return true if the event is hooked
|
| *
|
| * @exception SWTError <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
|
| * <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
|
| * <li>ERROR_NULL_ARGUMENT when the name is null</li>
|
| * </ul>
|
| */ |
| protected boolean isListening (int eventType) {
|
| checkWidget();
|
| return hooks (eventType);
|
| }
|
| boolean isValidSubclass () {
|
| return Display.isValidClass (getClass ());
|
| }
|
| boolean isValidThread () {
|
| return getDisplay ().isValidThread ();
|
| }
|
| void manageChildren () {
|
| /* Do nothing */
|
| }
|
| char mbcsToWcs (int ch) {
|
| return mbcsToWcs (ch, null);
|
| }
|
| char mbcsToWcs (int ch, String codePage) {
|
| int key = ch & 0xFFFF;
|
| if (key <= 0x7F) return (char) ch;
|
| byte [] buffer;
|
| if (key <= 0xFF) {
|
| buffer = new byte [1];
|
| buffer [0] = (byte) key;
|
| } else {
|
| buffer = new byte [2];
|
| buffer [0] = (byte) ((key >> 8) & 0xFF);
|
| buffer [1] = (byte) (key & 0xFF);
|
| }
|
| char [] result = Converter.mbcsToWcs (codePage, buffer);
|
| if (result.length == 0) return 0;
|
| return result [0];
|
| }
|
| /**
|
| * 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.
|
| *
|
| * @param eventType the type of event which has occurred
|
| * @param event the event data
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the event 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>
|
| */ |
| public void notifyListeners (int eventType, Event event) {
|
| checkWidget();
|
| if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| sendEvent (eventType, event);
|
| }
|
| void postEvent (int eventType, Event event) {
|
| if (eventTable == null) return;
|
| Display display = getDisplay ();
|
| event.type = eventType;
|
| event.widget = this;
|
| event.display = display;
|
| if (event.time == 0) {
|
| event.time = OS.XtLastTimestampProcessed (display.xDisplay);
|
| }
|
| display.postEvent (event);
|
| }
|
| void postEvent (int eventType) {
|
| if (eventTable == null) return;
|
| postEvent (eventType, new Event ());
|
| }
|
| int processArm (int callData) {
|
| return 0;
|
| }
|
| int processDispose (int callData) {
|
| return 0;
|
| }
|
| int processDefaultSelection (int callData) {
|
| return 0;
|
| }
|
| int processEvent (int eventNumber, int callData) {
|
| switch (eventNumber) {
|
| case SWT.Arm: return processArm (callData);
|
| case SWT.Dispose: return processDispose (callData);
|
| case SWT.DefaultSelection: return processDefaultSelection (callData);
|
| case SWT.FocusIn: return processSetFocus (callData);
|
| case SWT.Help: return processHelp (callData);
|
| case SWT.Hide: return processHide (callData);
|
| case SWT.KeyDown: return processKeyDown (callData);
|
| case SWT.KeyUp: return processKeyUp (callData);
|
| case SWT.Modify: return processModify (callData);
|
| case SWT.MouseDown: return processMouseDown (callData);
|
| case SWT.MouseEnter: return processMouseEnter (callData);
|
| case SWT.MouseExit: return processMouseExit (callData);
|
| case SWT.MouseHover: return processMouseHover (callData);
|
| case SWT.MouseMove: return processMouseMove (callData);
|
| case SWT.MouseUp: return processMouseUp (callData);
|
| case SWT.Paint: return processPaint (callData);
|
| case SWT.Resize: return processResize (callData);
|
| case SWT.Show: return processShow (callData);
|
| case SWT.Selection: return processSelection (callData);
|
| case SWT.Verify: return processVerify (callData);
|
| case -1: return processNonMaskable (callData);
|
| }
|
| return 0;
|
| }
|
| int processHelp (int callData) {
|
| return 0;
|
| }
|
| int processHide (int callData) {
|
| return 0;
|
| }
|
| int processKeyDown (int callData) {
|
| return 0;
|
| }
|
| int processKeyUp (int callData) {
|
| return 0;
|
| }
|
| int processModify (int callData) {
|
| return 0;
|
| }
|
| int processMouseDown (int callData) {
|
| return 0;
|
| }
|
| int processMouseEnter (int callData) {
|
| return 0;
|
| }
|
| int processMouseExit (int callData) {
|
| return 0;
|
| }
|
| int processMouseHover (int id) {
|
| return 0;
|
| }
|
| int processMouseMove (int callData) {
|
| return 0;
|
| }
|
| int processMouseUp (int callData) {
|
| return 0;
|
| }
|
| int processNonMaskable (int callData) {
|
| return 0;
|
| }
|
| int processPaint (int callData) {
|
| return 0;
|
| }
|
| int processResize (int callData) {
|
| return 0;
|
| }
|
| int processSelection (int callData) {
|
| return 0;
|
| }
|
| int processSetFocus (int callData) {
|
| return 0;
|
| }
|
| int processShow (int callData) {
|
| return 0;
|
| }
|
| int processVerify (int callData) {
|
| return 0;
|
| }
|
| void propagateHandle (boolean enabled, int widgetHandle) {
|
| int xDisplay = OS.XtDisplay (widgetHandle);
|
| if (xDisplay == 0) return;
|
| int xWindow = OS.XtWindow (widgetHandle);
|
| if (xWindow == 0) return;
|
| /*
|
| * Get the event mask from the widget. The event mask
|
| * returned by XtBuildEventMask () includes the masks
|
| * associated with all callbacks and event handlers
|
| * that have been hooked on the widget.
|
| */
|
| int event_mask = OS.XtBuildEventMask (widgetHandle);
|
| int do_not_propagate_mask =
|
| OS.KeyPressMask | OS.KeyReleaseMask | OS.ButtonPressMask |
|
| OS.ButtonReleaseMask | OS.PointerMotionMask;
|
| if (!enabled) {
|
| /*
|
| * Attempting to propogate EnterWindowMask and LeaveWindowMask
|
| * causes an X error so these must be specially cleared out from
|
| * the event mask, not included in the propogate mask.
|
| */
|
| event_mask &= ~(do_not_propagate_mask | OS.EnterWindowMask | OS.LeaveWindowMask);
|
| do_not_propagate_mask = 0;
|
| }
|
| XSetWindowAttributes attributes = new XSetWindowAttributes ();
|
| attributes.event_mask = event_mask;
|
| attributes.do_not_propagate_mask = do_not_propagate_mask;
|
| OS.XChangeWindowAttributes (xDisplay, xWindow, OS.CWDontPropagate | OS.CWEventMask, attributes);
|
| }
|
| void redrawHandle (int x, int y, int width, int height, int widgetHandle) {
|
| int display = OS.XtDisplay (widgetHandle);
|
| if (display == 0) return;
|
| int window = OS.XtWindow (widgetHandle);
|
| if (window == 0) return;
|
| int [] argList = {OS.XmNborderWidth, 0, OS.XmNborderColor, 0};
|
| OS.XtGetValues (widgetHandle, argList, argList.length / 2);
|
| if (argList [1] != 0) {
|
| /* Force the border to repaint by setting the color */
|
| OS.XtSetValues (widgetHandle, argList, argList.length / 2);
|
| }
|
| OS.XClearArea (display, window, x, y, width, height, true);
|
| }
|
| void register () {
|
| if (handle == 0) return;
|
| WidgetTable.put (handle, this);
|
| }
|
| void releaseChild () {
|
| /* Do nothing */
|
| }
|
| void releaseHandle () {
|
| handle = 0;
|
| state |= DISPOSED;
|
| }
|
| void releaseWidget () {
|
| sendEvent (SWT.Dispose);
|
| deregister ();
|
| eventTable = null;
|
| data = null;
|
| keys = null;
|
| values = null;
|
| }
|
| /**
|
| * Removes the listener from the collection of listeners who will
|
| * be notifed when an event of the given type occurs.
|
| *
|
| * @param eventType the type of event to listen for
|
| * @param listener the listener which should no longer be notified when the event occurs
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see Listener
|
| * @see #addListener
|
| */ |
| public void removeListener (int eventType, Listener handler) {
|
| checkWidget();
|
| if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook (eventType, handler);
|
| }
|
| /**
|
| * Removes the listener from the collection of listeners who will
|
| * be notifed when an event of the given type occurs.
|
| * <p>
|
| * <b>IMPORTANT:</b> This method is <em>not</em> part of the SWT
|
| * public API. It is marked public only so that it can be shared
|
| * within the packages provided by SWT. It should never be
|
| * referenced from application code.
|
| * </p>
|
| *
|
| * @param eventType the type of event to listen for
|
| * @param listener the listener which should no longer be notified when the event occurs
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see Listener
|
| * @see #addListener
|
| */
|
| protected void removeListener (int eventType, SWTEventListener handler) {
|
| checkWidget();
|
| if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook (eventType, handler);
|
| }
|
| /** |
| * Removes the listener from the collection of listeners who will |
| * be notifed when the widget is disposed. |
| * |
| * @param listener the listener which should no longer be notified when the receiver is disposed |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @see DisposeListener |
| * @see #addDisposeListener |
| */ |
| public void removeDisposeListener (DisposeListener listener) {
|
| checkWidget();
|
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
|
| if (eventTable == null) return;
|
| eventTable.unhook (SWT.Dispose, listener);
|
| }
|
| void setInputState (Event event, XInputEvent xEvent) {
|
| if ((xEvent.state & OS.Mod1Mask) != 0) event.stateMask |= SWT.ALT;
|
| if ((xEvent.state & OS.ShiftMask) != 0) event.stateMask |= SWT.SHIFT;
|
| if ((xEvent.state & OS.ControlMask) != 0) event.stateMask |= SWT.CONTROL;
|
| if ((xEvent.state & OS.Button1Mask) != 0) event.stateMask |= SWT.BUTTON1;
|
| if ((xEvent.state & OS.Button2Mask) != 0) event.stateMask |= SWT.BUTTON2;
|
| if ((xEvent.state & OS.Button3Mask) != 0) event.stateMask |= SWT.BUTTON3;
|
| }
|
| void setKeyState (Event event, XKeyEvent xEvent) {
|
| if (xEvent.keycode != 0) {
|
| byte [] buffer = new byte [1];
|
| int [] keysym = new int [1];
|
| OS.XLookupString (xEvent, buffer, buffer.length, keysym, null);
|
|
|
| /*
|
| * Bug in MOTIF. On Solaris only, XK_F11 and XK_F12 are not
|
| * translated correctly by XLookupString(). They are mapped
|
| * to 0x1005FF10 and 0x1005FF11 respectively. The fix is to
|
| * look for these values explicitly and correct them.
|
| */
|
| if (OS.IsSunOS && keysym [0] != 0) {
|
| switch (keysym [0]) {
|
| case 0x1005FF10:
|
| keysym [0] = OS.XK_F11;
|
| buffer [0] = 0;
|
| break;
|
| case 0x1005FF11:
|
| keysym [0] = OS.XK_F12;
|
| buffer [0] = 0;
|
| break;
|
| }
|
| /*
|
| * Bug in MOTIF. On Solaris only, there is garbage in the
|
| * high 16-bits for Keysyms such as XK_Down. Since Keysyms
|
| * must be 16-bits to fit into a Character, mask away the
|
| * high 16-bits on all platforms.
|
| */
|
| keysym [0] &= 0xFFFF;
|
| }
|
|
|
| /*
|
| * Feature in MOTIF. For some reason, XLookupString() fails
|
| * to translate both the keysym and the character when the
|
| * control key is down. For example, Ctrl+2 has the correct
|
| * keysym value (50) but no character value, while Ctrl+/ has
|
| * the keysym value (2F) but an invalid character value
|
| * (1F). It seems that Motif is applying the algorithm to
|
| * convert a character to a control character for characters
|
| * that are not valid control characters. The fix is to test
|
| * for 7-bit ASCII keysym, ignoring the valid control character
|
| * range, and use the keysym value as the character.
|
| *
|
| * Some other cases include Ctrl+3..Ctr+8, Ctrl+[.
|
| */
|
| if ((xEvent.state & OS.ControlMask) != 0) {
|
| if (0 <= keysym [0] && keysym [0] <= 0x7F) {
|
| if (!(64 <= keysym [0] && keysym [0] <= 95)) {
|
| buffer [0] = (byte) keysym [0];
|
| }
|
| }
|
| }
|
|
|
| /* Fill in the event keyCode or character */
|
| if (buffer [0] == 0) {
|
| event.keyCode = Display.translateKey (keysym [0]);
|
| /*
|
| * If translateKey () could not find a translation for the keysym
|
| * then attempt some known keysyms for which we can provide the
|
| * appropriate character.
|
| */
|
| if (event.keyCode == 0) {
|
| switch (keysym [0]) {
|
| case OS.XK_ISO_Left_Tab: event.character = '\t'; break;
|
| /*
|
| * Bug in Motif. When CTRL+space is pressed XLookupString
|
| * does not fill buffer [0] with anything, so we fill in
|
| * the event's character here.
|
| */
|
| case OS.XK_space: event.character = ' '; break;
|
| }
|
| }
|
| } else {
|
| event.character = mbcsToWcs (buffer [0] & 0xFF);
|
| }
|
| }
|
| setInputState (event, xEvent);
|
| }
|
| void sendEvent (int eventType, Event event) {
|
| if (eventTable == null) return;
|
| Display display = getDisplay ();
|
| event.type = eventType;
|
| event.display = display;
|
| event.widget = this;
|
| if (event.time == 0) {
|
| event.time = OS.XtLastTimestampProcessed (display.xDisplay);
|
| }
|
| eventTable.sendEvent (event);
|
| }
|
| void sendEvent (int eventType) {
|
| if (eventTable == null) return;
|
| sendEvent (eventType, new Event ());
|
| }
|
| void sendEvent (Event event) {
|
| if (eventTable == null) return;
|
| eventTable.sendEvent (event);
|
| }
|
| /**
|
| * 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>
|
| */ |
| public void setData (Object data) {
|
| checkWidget();
|
| 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
|
| */ |
| public void setData (String key, Object value) {
|
| checkWidget();
|
| if (key == null) error (SWT.ERROR_NULL_ARGUMENT);
|
|
|
| /* Remove the key/value pair */
|
| if (value == null) {
|
| if (keys == null) return;
|
| int index = 0;
|
| while (index < keys.length && !keys [index].equals (key)) index++;
|
| if (index == keys.length) return;
|
| if (keys.length == 1) {
|
| keys = null;
|
| values = null;
|
| } else {
|
| String [] newKeys = new String [keys.length - 1];
|
| Object [] newValues = new Object [values.length - 1];
|
| System.arraycopy (keys, 0, newKeys, 0, index);
|
| System.arraycopy (keys, index + 1, newKeys, index, newKeys.length - index);
|
| System.arraycopy (values, 0, newValues, 0, index);
|
| System.arraycopy (values, index + 1, newValues, index, newValues.length - index);
|
| keys = newKeys;
|
| values = newValues;
|
| }
|
| return;
|
| }
|
|
|
| /* Add the key/value pair */
|
| if (keys == null) {
|
| keys = new String [] {key};
|
| values = new Object [] {value};
|
| return;
|
| }
|
| for (int i=0; i<keys.length; i++) {
|
| if (keys [i].equals (key)) {
|
| values [i] = value;
|
| return;
|
| }
|
| }
|
| String [] newKeys = new String [keys.length + 1];
|
| Object [] newValues = new Object [values.length + 1];
|
| System.arraycopy (keys, 0, newKeys, 0, keys.length);
|
| System.arraycopy (values, 0, newValues, 0, values.length);
|
| newKeys [keys.length] = key;
|
| newValues [values.length] = value;
|
| keys = newKeys;
|
| values = newValues;
|
| }
|
|
|
| /**
|
| * Returns a string containing a concise, human-readable
|
| * description of the receiver.
|
| *
|
| * @return a string representation of the receiver
|
| */ |
| public String toString () {
|
| String string = "*Disposed*";
|
| if (!isDisposed ()) {
|
| string = "*Wrong Thread*";
|
| if (isValidThread ()) string = getNameText ();
|
| }
|
| return getName () + " {" + string + "}";
|
| }
|
| int topHandle () {
|
| return handle;
|
| }
|
| boolean translateMnemonic (int key, XKeyEvent xEvent) {
|
| return false;
|
| }
|
| boolean translateTraversal (int key, XKeyEvent xEvent) {
|
| return false;
|
| }
|
| int wcsToMbcs (char ch) {
|
| return wcsToMbcs (ch, null);
|
| }
|
| int wcsToMbcs (char ch, String codePage) {
|
| int key = ch & 0xFFFF;
|
| if (key <= 0x7F) return ch;
|
| byte [] buffer = Converter.wcsToMbcs (codePage, new char [] {ch}, false);
|
| if (buffer.length == 1) return (char) buffer [0];
|
| if (buffer.length == 2) {
|
| return (char) (((buffer [0] & 0xFF) << 8) | (buffer [1] & 0xFF));
|
| }
|
| return 0;
|
| }
|
| }
|
