/*******************************************************************************
* Copyright (c) 2000, 2011 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.photon.*;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
/**
* This class is the abstract superclass of all user interface objects.
* Widgets are created, disposed and issue notification to listeners
* when events occur which affect them.
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>(none)</dd>
* <dt><b>Events:</b></dt>
* <dd>Dispose</dd>
* </dl>
* <p>
* IMPORTANT: This class is intended to be subclassed <em>only</em>
* within the SWT implementation. However, it has not been marked
* final to allow those outside of the SWT development team to implement
* patched versions of the class in order to get around specific
* limitations in advance of when those limitations can be addressed
* by the team. Any class built using subclassing to access the internals
* of this class will likely fail to compile or run between releases and
* may be strongly platform specific. Subclassing should not be attempted
* without an intimate and detailed understanding of the workings of the
* hierarchy. No support is provided for user-written classes which are
* implemented as subclasses of this class.
* </p>
*
* @see #checkSubclass
* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
*/
public abstract class Widget {
/**
* the handle to the resource
* (Warning: This field is platform dependent)
* <p>
* <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT
* public API. It is marked public only so that it can be shared
* within the packages provided by SWT. It is not available on all
* platforms and should never be accessed from application code.
* </p>
*
* @noreference This field is not intended to be referenced by clients.
*/
public int handle;
int 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 HANDLE = 1 << 3;
static final int DISABLED = 1 << 4;
static final int MOVED = 1 << 5;
static final int RESIZED = 1 << 6;
static final int GRAB = 1 << 7;
/* A layout was requested on this widget */
static final int LAYOUT_NEEDED = 1 << 8;
/* The preferred size of a child has changed */
static final int LAYOUT_CHANGED = 1 << 9;
/* A layout was requested in this widget hierachy */
static final int LAYOUT_CHILD = 1 << 10;
/* More global state flags */
static final int RELEASED = 1<<11;
static final int DISPOSE_SENT = 1<<12;
/* Notify of the opportunity to skin this widget */
static final int SKIN_NEEDED = 1<<13;
/* Default size for widgets */
static final int DEFAULT_WIDTH = 64;
static final int DEFAULT_HEIGHT = 64;
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>
* <li>ERROR_INVALID_ARGUMENT - if the parent is disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*
* @see SWT
* @see #checkSubclass
* @see #getStyle
*/
public Widget (Widget parent, int style) {
checkSubclass ();
checkParent (parent);
this.style = style;
display = parent.display;
reskinWidget ();
}
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 checkParent (Widget parent) {
if (parent == null) error (SWT.ERROR_NULL_ARGUMENT);
if (parent.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
parent.checkWidget ();
}
/**
* Checks that this class can be subclassed.
* <p>
* The SWT class library is intended to be subclassed
* only at specific, controlled points (most notably,
* <code>Composite</code> and <code>Canvas</code> when
* implementing new widgets). This method enforces this
* rule unless it is overridden.
* </p><p>
* <em>IMPORTANT:</em> By providing an implementation of this
* method that allows a subclass of a class which does not
* normally allow subclassing to be created, the implementer
* agrees to be fully responsible for the fact that any such
* subclass will likely fail between SWT releases and will be
* strongly platform specific. No support is provided for
* user-written classes which are implemented in this fashion.
* </p><p>
* The ability to subclass outside of the allowed SWT classes
* is intended purely to enable those not on the SWT development
* team to implement patches in order to get around specific
* limitations in advance of when those limitations can be
* addressed by the team. Subclassing should not be attempted
* without an intimate and detailed understanding of the hierarchy.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*/
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
/**
* Throws an <code>SWTException</code> if the receiver can not
* be accessed by the caller. This may include both checks on
* the state of the receiver and more generally on the entire
* execution context. This method <em>should</em> be called by
* widget implementors to enforce the standard SWT invariants.
* <p>
* Currently, it is an error to invoke any method (other than
* <code>isDisposed()</code>) on a widget that has had its
* <code>dispose()</code> method called. It is also an error
* to call widget methods from any thread that is different
* from the thread that created the widget.
* </p><p>
* In future releases of SWT, there may be more or fewer error
* checks and exceptions may be thrown for different reasons.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
protected void checkWidget () {
Display display = this.display;
if (display == null) error (SWT.ERROR_WIDGET_DISPOSED);
if (display.thread != Thread.currentThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if ((state & DISPOSED) != 0) error (SWT.ERROR_WIDGET_DISPOSED);
}
int copyPhImage(int image) {
if (image == 0) return 0;
int newImage = OS.PiDuplicateImage (image, 0);
/*
* Bug in Photon. The image returned by PiDuplicateImage might
* have the same mask_bm/alpha as the original image. The fix
* is to detect this case and copy mask_bm/alpha if necessary.
*/
PhImage_t phImage = new PhImage_t();
OS.memmove (phImage, image, PhImage_t.sizeof);
PhImage_t newPhImage = new PhImage_t();
OS.memmove(newPhImage, newImage, PhImage_t.sizeof);
if (newPhImage.mask_bm != 0 && phImage.mask_bm == newPhImage.mask_bm) {
int length = newPhImage.mask_bpl * newPhImage.size_h;
int ptr = OS.malloc(length);
OS.memmove(ptr, newPhImage.mask_bm, length);
newPhImage.mask_bm = ptr;
}
if (newPhImage.alpha != 0 && phImage.alpha == newPhImage.alpha) {
PgAlpha_t alpha = new PgAlpha_t();
OS.memmove(alpha, phImage.alpha, PgAlpha_t.sizeof);
if (alpha.src_alpha_map_map != 0) {
int length = alpha.src_alpha_map_bpl * alpha.src_alpha_map_dim_h;
int ptr = OS.malloc(length);
OS.memmove(ptr, alpha.src_alpha_map_map, length);
alpha.src_alpha_map_map = ptr;
}
int ptr = OS.malloc(PgAlpha_t.sizeof);
OS.memmove(ptr, alpha, PgAlpha_t.sizeof);
newPhImage.alpha = ptr;
}
OS.memmove(newImage, newPhImage, PhImage_t.sizeof);
return newImage;
}
/**
* 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 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 notified when the widget is disposed. When the widget is
* disposed, the listener is notified by sending it the
* <code>widgetDisposed()</code> message.
*
* @param listener the listener which should be notified when the receiver is disposed
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see DisposeListener
* @see #removeDisposeListener
*/
public void addDisposeListener (DisposeListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Dispose, typedListener);
}
void click (int widget) {
int rid = OS.PtWidgetRid (widget);
if (rid == 0) return;
PhEvent_t event = new PhEvent_t ();
event.emitter_rid = rid;
event.emitter_handle = widget;
event.collector_rid = rid;
event.collector_handle = widget;
event.flags = (short) OS.Ph_EVENT_DIRECT;
event.processing_flags = (short) OS.Ph_FAKE_EVENT;
event.type = OS.Ph_EV_BUT_PRESS;
event.num_rects = 1;
PhPointerEvent_t pe = new PhPointerEvent_t ();
pe.click_count = 1;
pe.buttons = (short) OS.Ph_BUTTON_SELECT;
PhRect_t rect = new PhRect_t ();
int ptr = OS.malloc (PhEvent_t.sizeof + PhPointerEvent_t.sizeof + PhRect_t.sizeof);
OS.memmove (ptr, event, PhEvent_t.sizeof);
OS.memmove (ptr + PhEvent_t.sizeof, rect, PhRect_t.sizeof);
OS.memmove (ptr + PhEvent_t.sizeof + PhRect_t.sizeof, pe, PhPointerEvent_t.sizeof);
OS.PtSendEventToWidget (widget, ptr);
OS.PtFlush ();
event.type = OS.Ph_EV_BUT_RELEASE;
event.subtype = (short) OS.Ph_EV_RELEASE_REAL;
OS.memmove (ptr, event, PhEvent_t.sizeof);
OS.memmove (ptr + PhEvent_t.sizeof, rect, PhRect_t.sizeof);
OS.memmove (ptr + PhEvent_t.sizeof + PhRect_t.sizeof, pe, PhPointerEvent_t.sizeof);
OS.PtSendEventToWidget (widget, ptr);
OS.free (ptr);
}
void createHandle (int index) {
/* Do nothing */
}
int createToolTip (String string, int handle, byte [] font) {
if (string == null || string.length () == 0 || handle == 0) {
return 0;
}
int shellHandle = OS.PtFindDisjoint (handle);
byte [] buffer = Converter.wcsToMbcs (null, string, true);
int fill = display.INFO_BACKGROUND;
int text_color = display.INFO_FOREGROUND;
int toolTipHandle = OS.PtInflateBalloon (shellHandle, handle, OS.Pt_BALLOON_RIGHT, buffer, font, fill, text_color);
/*
* Feature in Photon. The position of the inflated balloon
* is relative to the widget position and not to the cursor
* position. The fix is to re-position the balloon.
*/
int ig = OS.PhInputGroup (0);
PhCursorInfo_t info = new PhCursorInfo_t ();
OS.PhQueryCursor ((short)ig, info);
short [] absX = new short [1], absY = new short [1];
OS.PtGetAbsPosition (shellHandle, absX, absY);
int x = info.pos_x - absX [0] + 16;
int y = info.pos_y - absY [0] + 16;
PhArea_t shellArea = new PhArea_t ();
OS.PtWidgetArea (shellHandle, shellArea);
PhArea_t toolTipArea = new PhArea_t ();
OS.PtWidgetArea (toolTipHandle, toolTipArea);
x = Math.max (0, Math.min (x, shellArea.size_w - toolTipArea.size_w));
y = Math.max (0, Math.min (y, shellArea.size_h - toolTipArea.size_h));
PhPoint_t pt = new PhPoint_t ();
pt.x = (short) x;
pt.y = (short) y;
int ptr = OS.malloc (PhPoint_t.sizeof);
OS.memmove (ptr, pt, PhPoint_t.sizeof);
OS.PtSetResource (toolTipHandle, OS.Pt_ARG_POS, ptr, 0);
OS.free (ptr);
return toolTipHandle;
}
void createWidget (int index) {
createHandle (index);
hookEvents ();
register ();
}
void deregister () {
if (handle == 0) return;
WidgetTable.remove (handle);
}
void destroyToolTip (int toolTipHandle) {
if (toolTipHandle != 0) OS.PtDestroyWidget (toolTipHandle);
}
void destroyWidget () {
int topHandle = topHandle ();
releaseHandle ();
if (topHandle != 0) {
OS.PtDestroyWidget (topHandle);
}
}
/**
* Disposes of the operating system resources associated with
* the receiver and all its descendants. After this method has
* been invoked, the receiver and all descendants will answer
* <code>true</code> when sent the message <code>isDisposed()</code>.
* Any internal connections between the widgets in the tree will
* have been removed to facilitate garbage collection.
* This method does nothing if the widget is already disposed.
* <p>
* NOTE: This method is not called recursively on the descendants
* of the receiver. This means that, widget implementers can not
* detect when a widget is being disposed of by re-implementing
* this method, but should instead listen for the <code>Dispose</code>
* event.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #addDisposeListener
* @see #removeDisposeListener
* @see #checkWidget
*/
public void dispose () {
/*
* Note: It is valid to attempt to dispose a widget
* more than once. If this happens, fail silently.
*/
if (isDisposed ()) return;
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
release (true);
}
int drawProc (int widget, int damage) {
return OS.Pt_CONTINUE;
}
static void error (int code) {
SWT.error(code);
}
boolean filters (int eventType) {
return display.filters (eventType);
}
char fixMnemonic (char [] buffer) {
int i=0, j=0;
char mnemonic=0;
while (i < buffer.length) {
if ((buffer [j++] = buffer [i++]) == '&') {
if (i == buffer.length) {continue;}
if (buffer [i] == '&') {i++; continue;}
if (mnemonic == 0) mnemonic = buffer [i];
j--;
}
}
while (j < buffer.length) buffer [j++] = 0;
return mnemonic;
}
/**
* 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);
}
String getName () {
String string = getClass ().getName ();
int index = string.length ();
while (--index > 0 && string.charAt (index) != '.') {/* empty */}
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;
}
boolean hooks (int eventType) {
if (eventTable == null) return false;
return eventTable.hooks (eventType);
}
int hotkeyProc (int widget, int data, int info) {
return OS.Pt_CONTINUE;
}
void hookEvents () {
/* Do nothing */
}
/**
* Returns <code>true</code> if the widget has been disposed,
* and <code>false</code> otherwise.
* <p>
* This method gets the dispose state for the widget.
* When a widget has been disposed, it is an error to
* invoke any other method (except {@link #dispose()}) using the widget.
* </p>
*
* @return <code>true</code> when the widget is disposed and <code>false</code> otherwise
*/
public boolean isDisposed () {
if (handle != 0) return false;
if ((state & HANDLE) != 0) return true;
return (state & DISPOSED) != 0;
}
boolean isValidSubclass () {
return Display.isValidClass (getClass ());
}
/**
* 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);
}
boolean isValidThread () {
return getDisplay ().isValidThread ();
}
/**
* 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);
}
int Ph_EV_BOUNDARY (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Ph_EV_BUT_PRESS (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Ph_EV_BUT_RELEASE (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Ph_EV_DRAG (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Ph_EV_KEY (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Ph_EV_PTR_MOTION (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_ACTIVATE (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_ARM (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_GOT_FOCUS (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_LOST_FOCUS (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_MODIFY_VERIFY (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_NUMERIC_CHANGED (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_OUTBOUND (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_PG_PANEL_SWITCHING (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_REALIZED (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_RESIZE (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_SCROLL_MOVE (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_SLIDER_MOVE (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_SELECTION (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_TEXT_CHANGED (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_TIMER_ACTIVATE (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_UNREALIZED (int widget, int info) {
return OS.Pt_CONTINUE;
}
int Pt_CB_WINDOW (int widget, int info) {
return OS.Pt_CONTINUE;
}
void register () {
if (handle == 0) return;
WidgetTable.put (handle, this);
}
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) {
}
void releaseHandle () {
handle = 0;
state |= DISPOSED;
display = null;
}
void releaseParent () {
/* Do nothing */
}
void releaseWidget () {
deregister ();
eventTable = null;
data = null;
}
/**
* Removes the listener from the collection of listeners who will
* be notified when an event of the given type occurs. The event
* type is one of the event constants defined in class <code>SWT</code>.
*
* @param eventType the type of event to listen for
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Listener
* @see SWT
* @see #addListener
* @see #getListeners(int)
* @see #notifyListeners
*/
public void removeListener (int eventType, Listener handler) {
checkWidget();
if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (eventType, handler);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when an event of the given type occurs.
* <p>
* <b>IMPORTANT:</b> This method is <em>not</em> part of the SWT
* public API. It is marked public only so that it can be shared
* within the packages provided by SWT. It should never be
* referenced from application code.
* </p>
*
* @param eventType the type of event to listen for
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Listener
* @see #addListener
*
* @noreference This method is not intended to be referenced by clients.
*/
protected void removeListener (int eventType, SWTEventListener handler) {
checkWidget();
if (handler == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (eventType, handler);
}
/**
* Marks the widget to be skinned.
* <p>
* The skin event is sent to the receiver's display when appropriate (usually before the next event
* is handled). Widgets are automatically marked for skinning upon creation as well as when its skin
* id or class changes. The skin id and/or class can be changed by calling <code>Display.setData(String, Object)</code>
* with the keys SWT.SKIN_ID and/or SWT.SKIN_CLASS. Once the skin event is sent to a widget, it
* will not be sent again unless <code>reskin(int)</code> is called on the widget or on an ancestor
* while specifying the <code>SWT.ALL</code> flag.
* </p>
* <p>
* The parameter <code>flags</code> may be either:
* <dl>
* <dt><b>SWT.ALL</b></dt>
* <dd>all children in the receiver's widget tree should be skinned</dd>
* <dt><b>SWT.NONE</b></dt>
* <dd>only the receiver should be skinned</dd>
* </dl>
* </p>
* @param flags the flags specifying how to reskin
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
* @since 3.6
*/
public void reskin (int flags) {
checkWidget ();
reskinWidget ();
if ((flags & SWT.ALL) != 0) reskinChildren (flags);
}
void reskinChildren (int flags) {
}
void reskinWidget() {
if ((state & SKIN_NEEDED) != SKIN_NEEDED) {
this.state |= SKIN_NEEDED;
display.addSkinnableWidget(this);
}
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the widget is disposed.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see DisposeListener
* @see #addDisposeListener
*/
public void removeDisposeListener (DisposeListener listener) {
checkWidget();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Dispose, listener);
}
void replaceMnemonic (int mnemonic, boolean normal, boolean alt) {
int [] args = {OS.Pt_ARG_ACCEL_KEY, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
if (args [1] != 0) {
int length = OS.strlen (args [1]);
if (length > 0) {
byte [] buffer = new byte [length];
OS.memmove (buffer, args [1], length);
char [] accelText = Converter.mbcsToWcs (null, buffer);
if (accelText.length > 0) {
char key = Character.toLowerCase (accelText [0]);
if (normal) {
//TEMPORARY CODE
// OS.PtRemoveHotkeyHandler (handle, key, 0, (short)0, handle, display.hotkeyProc);
}
if (alt) {
OS.PtRemoveHotkeyHandler (handle, key, OS.Pk_KM_Alt, (short)0, handle, display.hotkeyProc);
}
}
}
}
if (mnemonic == 0) return;
char key = Character.toLowerCase ((char)mnemonic);
if (normal) {
//TEMPORARY CODE
// OS.PtAddHotkeyHandler (handle, key, 0, (short)0, SWT.Activate, display.windowProc);
}
if (alt) {
OS.PtAddHotkeyHandler (handle, key, OS.Pk_KM_Alt, (short)0, handle, display.hotkeyProc);
}
}
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);
}
}
void sendSelectionEvent (int eventType) {
sendSelectionEvent (eventType, null, false);
}
void sendSelectionEvent (int eventType, Event event, boolean send) {
if (eventTable == null && !display.filters (eventType)) {
return;
}
if (event == null) event = new Event ();
// setInputState (event, state);
sendEvent (eventType, event, send);
}
/**
* 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;
}
}
}
}
if (key.equals(SWT.SKIN_CLASS) || key.equals(SWT.SKIN_ID)) this.reskin(SWT.ALL);
}
boolean setInputState (Event event, int type, int key_mods, int button_state) {
if ((key_mods & OS.Pk_KM_Alt) != 0) event.stateMask |= SWT.ALT;
if ((key_mods & OS.Pk_KM_Shift) != 0) event.stateMask |= SWT.SHIFT;
if ((key_mods & OS.Pk_KM_Ctrl) != 0) event.stateMask |= SWT.CONTROL;
if ((button_state & OS.Ph_BUTTON_SELECT) != 0) event.stateMask |= SWT.BUTTON1;
if ((button_state & OS.Ph_BUTTON_ADJUST) != 0) event.stateMask |= SWT.BUTTON2;
if ((button_state & OS.Ph_BUTTON_MENU) != 0) event.stateMask |= SWT.BUTTON3;
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;
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;
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, PhKeyEvent_t ke) {
int key = 0;
boolean isNull = false;
if ((ke.key_flags & OS.Pk_KF_Cap_Valid) != 0) {
key = ke.key_cap;
if ((ke.key_mods & OS.Pk_KM_Num_Lock) == 0) {
switch (key) {
case OS.Pk_KP_0: key = OS.Pk_Insert; break;
case OS.Pk_KP_1: key = OS.Pk_End; break;
case OS.Pk_KP_2: key = OS.Pk_Down; break;
case OS.Pk_KP_3: key = OS.Pk_Pg_Down; break;
case OS.Pk_KP_4: key = OS.Pk_Left; break;
case OS.Pk_KP_5: break;
case OS.Pk_KP_6: key = OS.Pk_Right; break;
case OS.Pk_KP_7: key = OS.Pk_Home; break;
case OS.Pk_KP_8: key = OS.Pk_Up; break;
case OS.Pk_KP_9: key = OS.Pk_Pg_Up; break;
case OS.Pk_KP_Decimal: key = OS.Pk_Delete; break;
}
}
event.keyCode = Display.translateKey (key);
}
switch (key) {
case OS.Pk_BackSpace: event.character = '\b'; break;
case OS.Pk_Linefeed: event.character = '\n'; break;
case OS.Pk_KP_Enter:
case OS.Pk_Return: event.character = '\r'; break;
case OS.Pk_Delete: event.character = 0x7F; break;
case OS.Pk_Escape: event.character = 0x1B; break;
case OS.Pk_KP_Tab:
case OS.Pk_Tab: event.character = '\t'; break;
/* These keys have no mapping in SWT yet */
case OS.Pk_Clear:
case OS.Pk_Menu:
case OS.Pk_Hyper_L:
case OS.Pk_Hyper_R:
break;
default: {
if (event.keyCode == 0) {
if ((ke.key_flags & OS.Pk_KF_Cap_Valid) != 0) {
event.keyCode = ke.key_cap;
}
}
/*
* Fetuare in Photon. The key_sym value is not valid when Ctrl
* or Alt is pressed. The fix is to detect this case and try to
* use the key_cap value.
*/
if ((ke.key_mods & (OS.Pk_KM_Alt | OS.Pk_KM_Ctrl)) != 0) {
if (0 <= key && key <= 0x7F) {
if ((ke.key_mods & OS.Pk_KM_Ctrl) != 0) {
isNull = key == '@';
if ('a' <= key && key <= 'z') key -= 'a' - 'A';
if (64 <= key && key <= 95) key -= 64;
event.character = (char) key;
isNull &= key == 0;
} else {
if ((ke.key_flags & OS.Pk_KF_Sym_Valid) != 0) {
event.character = (char) ke.key_sym;
}
}
}
} else {
byte [] buffer = new byte [6];
int length = OS.PhKeyToMb (buffer, ke);
if (length > 0) {
char [] unicode = Converter.mbcsToWcs (null, buffer);
if (unicode.length > 0) event.character = unicode [0];
}
}
}
}
if (event.keyCode == 0 && event.character == 0) {
if (!isNull) return false;
}
return setInputState (event, type, ke.key_mods, ke.button_state);
}
boolean setMouseState(Event event, int type, PhPointerEvent_t pe, PhEvent_t ev) {
int buttons = pe.buttons;
event.x = pe.pos_x + ev.translation_x;
event.y = pe.pos_y + ev.translation_y;
if (ev.type == OS.Ph_EV_BUT_PRESS || ev.type == OS.Ph_EV_BUT_RELEASE) {
switch (buttons) {
case OS.Ph_BUTTON_SELECT: event.button = 1; break;
case OS.Ph_BUTTON_ADJUST: event.button = 2; break;
case OS.Ph_BUTTON_MENU: event.button = 3; break;
}
}
return setInputState(event, type, pe.key_mods, pe.button_state);
}
int topHandle () {
return handle;
}
/**
* Returns a string containing a concise, human-readable
* description of the receiver.
*
* @return a string representation of the receiver
*/
public String toString () {
String string = "*Disposed*";
if (!isDisposed ()) {
string = "*Wrong Thread*";
if (isValidThread ()) string = getNameText ();
}
return getName () + " {" + string + "}";
}
int windowProc (int handle, int data, int info) {
switch (data) {
case OS.Ph_EV_BOUNDARY: return Ph_EV_BOUNDARY (handle, info);
case OS.Ph_EV_BUT_PRESS: return Ph_EV_BUT_PRESS (handle, info);
case OS.Ph_EV_BUT_RELEASE: return Ph_EV_BUT_RELEASE (handle, info);
case OS.Ph_EV_DRAG: return Ph_EV_DRAG (handle, info);
case OS.Ph_EV_KEY: return Ph_EV_KEY (handle, info);
case OS.Ph_EV_PTR_MOTION: return Ph_EV_PTR_MOTION (handle, info);
case OS.Pt_CB_ACTIVATE: return Pt_CB_ACTIVATE (handle, info);
case OS.Pt_CB_ARM: return Pt_CB_ARM (handle, info);
case OS.Pt_CB_GOT_FOCUS: return Pt_CB_GOT_FOCUS (handle, info);
case OS.Pt_CB_LOST_FOCUS: return Pt_CB_LOST_FOCUS (handle, info);
case OS.Pt_CB_MODIFY_VERIFY: return Pt_CB_MODIFY_VERIFY (handle, info);
case OS.Pt_CB_NUMERIC_CHANGED: return Pt_CB_NUMERIC_CHANGED (handle, info);
case OS.Pt_CB_OUTBOUND: return Pt_CB_OUTBOUND (handle, info);
case OS.Pt_CB_PG_PANEL_SWITCHING: return Pt_CB_PG_PANEL_SWITCHING (handle, info);
case OS.Pt_CB_REALIZED: return Pt_CB_REALIZED (handle, info);
case OS.Pt_CB_RESIZE: return Pt_CB_RESIZE (handle, info);
case OS.Pt_CB_SCROLL_MOVE: return Pt_CB_SCROLL_MOVE (handle, info);
case OS.Pt_CB_SLIDER_MOVE: return Pt_CB_SLIDER_MOVE (handle, info);
case OS.Pt_CB_SELECTION: return Pt_CB_SELECTION (handle, info);
case OS.Pt_CB_TEXT_CHANGED: return Pt_CB_TEXT_CHANGED (handle, info);
case OS.Pt_CB_TIMER_ACTIVATE: return Pt_CB_TIMER_ACTIVATE (handle, info);
case OS.Pt_CB_UNREALIZED: return Pt_CB_UNREALIZED (handle, info);
case OS.Pt_CB_WINDOW: return Pt_CB_WINDOW (handle, info);
}
return OS.Pt_CONTINUE;
}
}