/*
* Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.awt.X11;
import java.awt.*;
import java.awt.dnd.DropTarget;
import java.awt.dnd.DropTargetListener;
import java.awt.event.*;
import java.awt.image.ColorModel;
import java.awt.image.ImageObserver;
import java.awt.image.ImageProducer;
import java.awt.image.VolatileImage;
import java.awt.peer.*;
import sun.awt.*;
import sun.awt.motif.X11FontMetrics;
import java.lang.reflect.*;
import java.util.logging.*;
import java.util.*;
import static sun.awt.X11.XEmbedHelper.*;
import java.security.AccessController;
import sun.security.action.GetBooleanAction;
public class XEmbedCanvasPeer extends XCanvasPeer implements WindowFocusListener, KeyEventPostProcessor, ModalityListener, WindowIDProvider {
private static final Logger xembedLog = Logger.getLogger("sun.awt.X11.xembed.XEmbedCanvasPeer");
boolean applicationActive; // Whether the application is active(has focus)
XEmbedServer xembed = new XEmbedServer(); // Helper object, contains XEmbed intrinsics
Map<Long, AWTKeyStroke> accelerators = new HashMap<Long, AWTKeyStroke>(); // Maps accelerator ID into AWTKeyStroke
Map<AWTKeyStroke, Long> accel_lookup = new HashMap<AWTKeyStroke, Long>(); // Maps AWTKeyStroke into accelerator ID
Set<GrabbedKey> grabbed_keys = new HashSet<GrabbedKey>(); // A set of keys grabbed by client
Object ACCEL_LOCK = accelerators; // Lock object for working with accelerators;
Object GRAB_LOCK = grabbed_keys; // Lock object for working with keys grabbed by client
XEmbedCanvasPeer() {}
XEmbedCanvasPeer(XCreateWindowParams params) {
super(params);
}
XEmbedCanvasPeer(Component target) {
super(target);
}
protected void postInit(XCreateWindowParams params) {
super.postInit(params);
installActivateListener();
installAcceleratorListener();
installModalityListener();
// XEmbed canvas should be non-traversable.
// FIXME: Probably should be removed and enforced setting of it by the users
target.setFocusTraversalKeysEnabled(false);
}
protected void preInit(XCreateWindowParams params) {
super.preInit(params);
params.put(EVENT_MASK,
KeyPressMask | KeyReleaseMask
| FocusChangeMask | ButtonPressMask | ButtonReleaseMask
| EnterWindowMask | LeaveWindowMask | PointerMotionMask
| ButtonMotionMask | ExposureMask | StructureNotifyMask | SubstructureNotifyMask);
}
void installModalityListener() {
((SunToolkit)Toolkit.getDefaultToolkit()).addModalityListener(this);
}
void deinstallModalityListener() {
((SunToolkit)Toolkit.getDefaultToolkit()).removeModalityListener(this);
}
void installAcceleratorListener() {
KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventPostProcessor(this);
}
void deinstallAcceleratorListener() {
KeyboardFocusManager.getCurrentKeyboardFocusManager().removeKeyEventPostProcessor(this);
}
void installActivateListener() {
// FIXME: should watch for hierarchy changes
Window toplevel = getTopLevel(target);
if (toplevel != null) {
toplevel.addWindowFocusListener(this);
applicationActive = toplevel.isFocused();
}
}
void deinstallActivateListener() {
Window toplevel = getTopLevel(target);
if (toplevel != null) {
toplevel.removeWindowFocusListener(this);
}
}
boolean isXEmbedActive() {
return xembed.handle != 0;
}
boolean isApplicationActive() {
return applicationActive;
}
void initDispatching() {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Init embedding for " + Long.toHexString(xembed.handle));
XToolkit.awtLock();
try {
XToolkit.addEventDispatcher(xembed.handle, xembed);
XlibWrapper.XSelectInput(XToolkit.getDisplay(), xembed.handle,
XlibWrapper.StructureNotifyMask | XlibWrapper.PropertyChangeMask);
XDropTargetRegistry.getRegistry().registerXEmbedClient(getWindow(), xembed.handle);
} finally {
XToolkit.awtUnlock();
}
xembed.processXEmbedInfo();
notifyChildEmbedded();
}
void endDispatching() {
xembedLog.fine("End dispatching for " + Long.toHexString(xembed.handle));
XToolkit.awtLock();
try {
XDropTargetRegistry.getRegistry().unregisterXEmbedClient(getWindow(), xembed.handle);
// We can't deselect input since someone else might be interested in it
XToolkit.removeEventDispatcher(xembed.handle, xembed);
} finally {
XToolkit.awtUnlock();
}
}
void embedChild(long child) {
if (xembed.handle != 0) {
detachChild();
}
xembed.handle = child;
initDispatching();
}
void childDestroyed() {
xembedLog.fine("Child " + Long.toHexString(xembed.handle) + " has self-destroyed.");
endDispatching();
xembed.handle = 0;
}
public void handleEvent(AWTEvent e) {
super.handleEvent(e);
if (isXEmbedActive()) {
switch (e.getID()) {
case FocusEvent.FOCUS_GAINED:
canvasFocusGained((FocusEvent)e);
break;
case FocusEvent.FOCUS_LOST:
canvasFocusLost((FocusEvent)e);
break;
case KeyEvent.KEY_PRESSED:
case KeyEvent.KEY_RELEASED:
if (!((InputEvent)e).isConsumed()) {
forwardKeyEvent((KeyEvent)e);
}
break;
}
}
}
public void dispatchEvent(XEvent ev) {
super.dispatchEvent(ev);
switch (ev.get_type()) {
case CreateNotify:
XCreateWindowEvent cr = ev.get_xcreatewindow();
if (xembedLog.isLoggable(Level.FINEST)) {
xembedLog.finest("Message on embedder: " + cr);
}
if (xembedLog.isLoggable(Level.FINER)) {
xembedLog.finer("Create notify for parent " + Long.toHexString(cr.get_parent()) +
", window " + Long.toHexString(cr.get_window()));
}
embedChild(cr.get_window());
break;
case DestroyNotify:
XDestroyWindowEvent dn = ev.get_xdestroywindow();
if (xembedLog.isLoggable(Level.FINEST)) {
xembedLog.finest("Message on embedder: " + dn);
}
if (xembedLog.isLoggable(Level.FINER)) {
xembedLog.finer("Destroy notify for parent: " + dn);
}
childDestroyed();
break;
case ReparentNotify:
XReparentEvent rep = ev.get_xreparent();
if (xembedLog.isLoggable(Level.FINEST)) {
xembedLog.finest("Message on embedder: " + rep);
}
if (xembedLog.isLoggable(Level.FINER)) {
xembedLog.finer("Reparent notify for parent " + Long.toHexString(rep.get_parent()) +
", window " + Long.toHexString(rep.get_window()) +
", event " + Long.toHexString(rep.get_event()));
}
if (rep.get_parent() == getWindow()) {
// Reparented into us - embed it
embedChild(rep.get_window());
} else {
// Reparented out of us - detach it
childDestroyed();
}
break;
}
}
public Dimension getPreferredSize() {
if (isXEmbedActive()) {
XToolkit.awtLock();
try {
long p_hints = XlibWrapper.XAllocSizeHints();
XSizeHints hints = new XSizeHints(p_hints);
XlibWrapper.XGetWMNormalHints(XToolkit.getDisplay(), xembed.handle, p_hints, XlibWrapper.larg1);
Dimension res = new Dimension(hints.get_width(), hints.get_height());
XlibWrapper.XFree(p_hints);
return res;
} finally {
XToolkit.awtUnlock();
}
} else {
return super.getPreferredSize();
}
}
public Dimension getMinimumSize() {
if (isXEmbedActive()) {
XToolkit.awtLock();
try {
long p_hints = XlibWrapper.XAllocSizeHints();
XSizeHints hints = new XSizeHints(p_hints);
XlibWrapper.XGetWMNormalHints(XToolkit.getDisplay(), xembed.handle, p_hints, XlibWrapper.larg1);
Dimension res = new Dimension(hints.get_min_width(), hints.get_min_height());
XlibWrapper.XFree(p_hints);
return res;
} finally {
XToolkit.awtUnlock();
}
} else {
return super.getMinimumSize();
}
}
public void dispose() {
if (isXEmbedActive()) {
detachChild();
}
deinstallActivateListener();
deinstallModalityListener();
deinstallAcceleratorListener();
// BUG: Focus traversal doesn't become enabled after the one round of embedding
//target.setFocusTraversalKeysEnabled(true);
super.dispose();
}
// Focusable is true in order to enable focus traversal through this Canvas
public boolean isFocusable() {
return true;
}
Window getTopLevel(Component comp) {
while (comp != null && !(comp instanceof Window)) {
comp = comp.getParent();
}
return (Window)comp;
}
Rectangle getClientBounds() {
XToolkit.awtLock();
try {
XWindowAttributes wattr = new XWindowAttributes();
try {
XToolkit.WITH_XERROR_HANDLER(XErrorHandler.IgnoreBadWindowHandler.getInstance());
int status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(),
xembed.handle, wattr.pData);
XToolkit.RESTORE_XERROR_HANDLER();
if (status == 0 ||
(XToolkit.saved_error != null &&
XToolkit.saved_error.get_error_code() != XlibWrapper.Success)) {
return null;
}
return new Rectangle(wattr.get_x(), wattr.get_y(), wattr.get_width(), wattr.get_height());
} finally {
wattr.dispose();
}
} finally {
XToolkit.awtUnlock();
}
}
void childResized() {
if (xembedLog.isLoggable(Level.FINER)) {
Rectangle bounds = getClientBounds();
xembedLog.finer("Child resized: " + bounds);
// It is not required to update embedder's size when client size changes
// However, since there is no any means to get client size it seems to be the
// only way to provide it. However, it contradicts with Java layout concept -
// so it is disabled for now.
// Rectangle my_bounds = getBounds();
// setBounds(my_bounds.x, my_bounds.y, bounds.width, bounds.height, SET_BOUNDS);
}
XToolkit.postEvent(XToolkit.targetToAppContext(target), new ComponentEvent(target, ComponentEvent.COMPONENT_RESIZED));
}
void focusNext() {
if (isXEmbedActive()) {
xembedLog.fine("Requesting focus for the next component after embedder");
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
KeyboardFocusManager.getCurrentKeyboardFocusManager().focusNextComponent(target);
}
}));
} else {
xembedLog.fine("XEmbed is not active - denying focus next");
}
}
void focusPrev() {
if (isXEmbedActive()) {
xembedLog.fine("Requesting focus for the next component after embedder");
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
KeyboardFocusManager.getCurrentKeyboardFocusManager().focusPreviousComponent(target);
}
}));
} else {
xembedLog.fine("XEmbed is not active - denying focus prev");
}
}
void requestXEmbedFocus() {
if (isXEmbedActive()) {
xembedLog.fine("Requesting focus for client");
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
target.requestFocus();
}
}));
} else {
xembedLog.fine("XEmbed is not active - denying request focus");
}
}
void notifyChildEmbedded() {
xembed.sendMessage(xembed.handle, XEMBED_EMBEDDED_NOTIFY, getWindow(), Math.min(xembed.version, XEMBED_VERSION), 0);
if (isApplicationActive()) {
xembedLog.fine("Sending WINDOW_ACTIVATE during initialization");
xembed.sendMessage(xembed.handle, XEMBED_WINDOW_ACTIVATE);
if (hasFocus()) {
xembedLog.fine("Sending FOCUS_GAINED during initialization");
xembed.sendMessage(xembed.handle, XEMBED_FOCUS_IN, XEMBED_FOCUS_CURRENT, 0, 0);
}
}
}
void detachChild() {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Detaching child " + Long.toHexString(xembed.handle));
/**
* XEmbed specification:
* "The embedder can unmap the client and reparent the client window to the root window. If the
* client receives an ReparentNotify event, it should check the parent field of the XReparentEvent
* structure. If this is the root window of the window's screen, then the protocol is finished and
* there is no further interaction. If it is a window other than the root window, then the protocol
* continues with the new parent acting as the embedder window."
*/
XToolkit.awtLock();
try {
XlibWrapper.XUnmapWindow(XToolkit.getDisplay(), xembed.handle);
XlibWrapper.XReparentWindow(XToolkit.getDisplay(), xembed.handle, XToolkit.getDefaultRootWindow(), 0, 0);
} finally {
XToolkit.awtUnlock();
}
endDispatching();
xembed.handle = 0;
}
public void windowGainedFocus(WindowEvent e) {
applicationActive = true;
if (isXEmbedActive()) {
xembedLog.fine("Sending WINDOW_ACTIVATE");
xembed.sendMessage(xembed.handle, XEMBED_WINDOW_ACTIVATE);
}
}
public void windowLostFocus(WindowEvent e) {
applicationActive = false;
if (isXEmbedActive()) {
xembedLog.fine("Sending WINDOW_DEACTIVATE");
xembed.sendMessage(xembed.handle, XEMBED_WINDOW_DEACTIVATE);
}
}
void canvasFocusGained(FocusEvent e) {
if (isXEmbedActive()) {
xembedLog.fine("Forwarding FOCUS_GAINED");
int flavor = XEMBED_FOCUS_CURRENT;
if (e instanceof CausedFocusEvent) {
CausedFocusEvent ce = (CausedFocusEvent)e;
if (ce.getCause() == CausedFocusEvent.Cause.TRAVERSAL_FORWARD) {
flavor = XEMBED_FOCUS_FIRST;
} else if (ce.getCause() == CausedFocusEvent.Cause.TRAVERSAL_BACKWARD) {
flavor = XEMBED_FOCUS_LAST;
}
}
xembed.sendMessage(xembed.handle, XEMBED_FOCUS_IN, flavor, 0, 0);
}
}
void canvasFocusLost(FocusEvent e) {
if (isXEmbedActive() && !e.isTemporary()) {
xembedLog.fine("Forwarding FOCUS_LOST");
int num = 0;
if (AccessController.doPrivileged(new GetBooleanAction("sun.awt.xembed.testing"))) {
Component opp = e.getOppositeComponent();
try {
num = Integer.parseInt(opp.getName());
} catch (NumberFormatException nfe) {
}
}
xembed.sendMessage(xembed.handle, XEMBED_FOCUS_OUT, num, 0, 0);
}
}
static Field bdataField;
static byte[] getBData(KeyEvent e) {
try {
if (bdataField == null) {
bdataField = SunToolkit.getField(java.awt.AWTEvent.class, "bdata");
}
return (byte[])bdataField.get(e);
} catch (IllegalAccessException ex) {
return null;
}
}
void forwardKeyEvent(KeyEvent e) {
xembedLog.fine("Try to forward key event");
byte[] bdata = getBData(e);
long data = Native.toData(bdata);
if (data == 0) {
return;
}
try {
XKeyEvent ke = new XKeyEvent(data);
ke.set_window(xembed.handle);
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Forwarding native key event: " + ke);
XToolkit.awtLock();
try {
XlibWrapper.XSendEvent(XToolkit.getDisplay(), xembed.handle, false, XlibWrapper.NoEventMask, data);
} finally {
XToolkit.awtUnlock();
}
} finally {
XlibWrapper.unsafe.freeMemory(data);
}
}
/**
* Grab/ungrab key functionality is an unofficial API supported by
* GTK. Unfortunately, it doesn't support accelerator API, so,
* since this is the ONLY shortcut-processing API available, we
* must support it. See XEmbed.NON_STANDARD_XEMBED_GTK_*
* messages. The format of these messages is as follows:
* - request from client:
* data[1] = NON_STANDARD_XEMBED_GTK_GRAB_KEY or NON_STANDARD_XEMBED_GTK_UNGRAB_KEY
* data[3] = X keysym
* data[4] = X modifiers
*
* - response from server (in case the grabbed key has been pressed):
* forwarded XKeyEvent that matches keysym/modifiers pair
*/
void grabKey(final long keysym, final long modifiers) {
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
GrabbedKey grab = new GrabbedKey(keysym, modifiers);
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Grabbing key: " + grab);
synchronized(GRAB_LOCK) {
grabbed_keys.add(grab);
}
}
}));
}
void ungrabKey(final long keysym, final long modifiers) {
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
GrabbedKey grab = new GrabbedKey(keysym, modifiers);
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("UnGrabbing key: " + grab);
synchronized(GRAB_LOCK) {
grabbed_keys.remove(grab);
}
}
}));
}
void registerAccelerator(final long accel_id, final long keysym, final long modifiers) {
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
AWTKeyStroke stroke = xembed.getKeyStrokeForKeySym(keysym, modifiers);
if (stroke != null) {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Registering accelerator " + accel_id + " for " + stroke);
synchronized(ACCEL_LOCK) {
accelerators.put(accel_id, stroke);
accel_lookup.put(stroke, accel_id);
}
}
propogateRegisterAccelerator(stroke);
}
}));
}
void unregisterAccelerator(final long accel_id) {
postEvent(new InvocationEvent(target, new Runnable() {
public void run() {
AWTKeyStroke stroke = null;
synchronized(ACCEL_LOCK) {
stroke = accelerators.get(accel_id);
if (stroke != null) {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Unregistering accelerator: " + accel_id);
accelerators.remove(accel_id);
accel_lookup.remove(stroke); // FIXME: How about several accelerators with the same stroke?
}
}
propogateUnRegisterAccelerator(stroke);
}
}));
}
void propogateRegisterAccelerator(AWTKeyStroke stroke) {
// Find the top-level and see if it is XEmbed client. If so, ask him to
// register the accelerator
XWindowPeer parent = getToplevelXWindow();
if (parent != null && parent instanceof XEmbeddedFramePeer) {
XEmbeddedFramePeer embedded = (XEmbeddedFramePeer)parent;
embedded.registerAccelerator(stroke);
}
}
void propogateUnRegisterAccelerator(AWTKeyStroke stroke) {
// Find the top-level and see if it is XEmbed client. If so, ask him to
// register the accelerator
XWindowPeer parent = getToplevelXWindow();
if (parent != null && parent instanceof XEmbeddedFramePeer) {
XEmbeddedFramePeer embedded = (XEmbeddedFramePeer)parent;
embedded.unregisterAccelerator(stroke);
}
}
public boolean postProcessKeyEvent(KeyEvent e) {
// Processing events only if we are in the focused window but
// we are not focus owner since otherwise we will get
// duplicate shortcut events in the client - one is from
// activate_accelerator, another from forwarded event
// FIXME: This is probably an incompatibility, protocol
// doesn't say anything about disable accelerators when client
// is focused.
XWindowPeer parent = getToplevelXWindow();
if (parent == null || !((Window)parent.getTarget()).isFocused() || target.isFocusOwner()) {
return false;
}
boolean result = false;
if (xembedLog.isLoggable(Level.FINER)) xembedLog.finer("Post-processing event " + e);
// Process ACCELERATORS
AWTKeyStroke stroke = AWTKeyStroke.getAWTKeyStrokeForEvent(e);
long accel_id = 0;
boolean exists = false;
synchronized(ACCEL_LOCK) {
exists = accel_lookup.containsKey(stroke);
if (exists) {
accel_id = accel_lookup.get(stroke).longValue();
}
}
if (exists) {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Activating accelerator " + accel_id);
xembed.sendMessage(xembed.handle, XEMBED_ACTIVATE_ACCELERATOR, accel_id, 0, 0); // FIXME: How about overloaded?
result = true;
}
// Process Grabs, unofficial GTK feature
exists = false;
GrabbedKey key = new GrabbedKey(e);
synchronized(GRAB_LOCK) {
exists = grabbed_keys.contains(key);
}
if (exists) {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine("Forwarding grabbed key " + e);
forwardKeyEvent(e);
result = true;
}
return result;
}
public void modalityPushed(ModalityEvent ev) {
xembed.sendMessage(xembed.handle, XEMBED_MODALITY_ON);
}
public void modalityPopped(ModalityEvent ev) {
xembed.sendMessage(xembed.handle, XEMBED_MODALITY_OFF);
}
public void handleClientMessage(XEvent xev) {
super.handleClientMessage(xev);
XClientMessageEvent msg = xev.get_xclient();
if (xembedLog.isLoggable(Level.FINER)) xembedLog.finer("Client message to embedder: " + msg);
if (msg.get_message_type() == xembed.XEmbed.getAtom()) {
if (xembedLog.isLoggable(Level.FINE)) xembedLog.fine(xembed.XEmbedMessageToString(msg));
}
if (isXEmbedActive()) {
switch ((int)msg.get_data(1)) {
case _SUN_XEMBED_START:
// Child has finished initialization and waits for notify
xembed.processXEmbedInfo();
notifyChildEmbedded();
break;
case XEMBED_REQUEST_FOCUS:
requestXEmbedFocus();
break;
case XEMBED_FOCUS_NEXT:
focusNext();
break;
case XEMBED_FOCUS_PREV:
focusPrev();
break;
case XEMBED_REGISTER_ACCELERATOR:
registerAccelerator(msg.get_data(2), msg.get_data(3), msg.get_data(4));
break;
case XEMBED_UNREGISTER_ACCELERATOR:
unregisterAccelerator(msg.get_data(2));
break;
case NON_STANDARD_XEMBED_GTK_GRAB_KEY:
grabKey(msg.get_data(3), msg.get_data(4));
break;
case NON_STANDARD_XEMBED_GTK_UNGRAB_KEY:
ungrabKey(msg.get_data(3), msg.get_data(4));
break;
}
} else {
xembedLog.finer("But XEmbed is not Active!");
}
}
private static class XEmbedDropTarget extends DropTarget {
public void addDropTargetListener(DropTargetListener dtl)
throws TooManyListenersException {
// Drop target listeners registered with this target will never be
// notified, since all drag notifications are routed to the XEmbed
// client. To avoid confusion we prohibit listeners registration
// by throwing TooManyListenersException as if there is a listener
// registered with this target already.
throw new TooManyListenersException();
}
}
public void setXEmbedDropTarget() {
// Register a drop site on the top level.
Runnable r = new Runnable() {
public void run() {
target.setDropTarget(new XEmbedDropTarget());
}
};
SunToolkit.executeOnEventHandlerThread(target, r);
}
public void removeXEmbedDropTarget() {
// Unregister a drop site on the top level.
Runnable r = new Runnable() {
public void run() {
if (target.getDropTarget() instanceof XEmbedDropTarget) {
target.setDropTarget(null);
}
}
};
SunToolkit.executeOnEventHandlerThread(target, r);
}
public boolean processXEmbedDnDEvent(long ctxt, int eventID) {
if (xembedLog.isLoggable(Level.FINEST)) {
xembedLog.finest(" Drop target=" + target.getDropTarget());
}
if (target.getDropTarget() instanceof XEmbedDropTarget) {
AppContext appContext = XToolkit.targetToAppContext(getTarget());
XDropTargetContextPeer peer =
XDropTargetContextPeer.getPeer(appContext);
peer.forwardEventToEmbedded(xembed.handle, ctxt, eventID);
return true;
} else {
return false;
}
}
class XEmbedServer extends XEmbedHelper implements XEventDispatcher {
long handle; // Handle to XEmbed client
long version;
long flags;
boolean processXEmbedInfo() {
long xembed_info_data = Native.allocateLongArray(2);
try {
if (!XEmbedInfo.getAtomData(handle, xembed_info_data, 2)) {
// No more XEMBED_INFO? This is not XEmbed client!
// Unfortunately this is the initial state of the most clients
// FIXME: add 5-state processing
//childDestroyed();
xembedLog.finer("Unable to get XEMBED_INFO atom data");
return false;
}
version = Native.getCard32(xembed_info_data, 0);
flags = Native.getCard32(xembed_info_data, 1);
boolean new_mapped = (flags & XEMBED_MAPPED) != 0;
boolean currently_mapped = XlibUtil.getWindowMapState(handle) != XlibWrapper.IsUnmapped;
if (new_mapped != currently_mapped) {
if (xembedLog.isLoggable(Level.FINER))
xembedLog.fine("Mapping state of the client has changed, old state: " + currently_mapped + ", new state: " + new_mapped);
if (new_mapped) {
XToolkit.awtLock();
try {
XlibWrapper.XMapWindow(XToolkit.getDisplay(), handle);
} finally {
XToolkit.awtUnlock();
}
} else {
XToolkit.awtLock();
try {
XlibWrapper.XUnmapWindow(XToolkit.getDisplay(), handle);
} finally {
XToolkit.awtUnlock();
}
}
} else {
xembedLog.finer("Mapping state didn't change, mapped: " + currently_mapped);
}
return true;
} finally {
XlibWrapper.unsafe.freeMemory(xembed_info_data);
}
}
public void handlePropertyNotify(XEvent xev) {
if (isXEmbedActive()) {
XPropertyEvent ev = xev.get_xproperty();
if (xembedLog.isLoggable(Level.FINER)) xembedLog.finer("Property change on client: " + ev);
if (ev.get_atom() == XAtom.XA_WM_NORMAL_HINTS) {
childResized();
} else if (ev.get_atom() == XEmbedInfo.getAtom()) {
processXEmbedInfo();
} else if (ev.get_atom() ==
XDnDConstants.XA_XdndAware.getAtom()) {
XDropTargetRegistry.getRegistry().unregisterXEmbedClient(getWindow(),
xembed.handle);
if (ev.get_state() == XConstants.PropertyNewValue) {
XDropTargetRegistry.getRegistry().registerXEmbedClient(getWindow(),
xembed.handle);
}
}
} else {
xembedLog.finer("XEmbed is not active");
}
}
void handleConfigureNotify(XEvent xev) {
if (isXEmbedActive()) {
XConfigureEvent ev = xev.get_xconfigure();
if (xembedLog.isLoggable(Level.FINER)) xembedLog.finer("Bounds change on client: " + ev);
if (xev.get_xany().get_window() == handle) {
childResized();
}
}
}
public void dispatchEvent(XEvent xev) {
int type = xev.get_type();
switch (type) {
case PropertyNotify:
handlePropertyNotify(xev);
break;
case ConfigureNotify:
handleConfigureNotify(xev);
break;
case ClientMessage:
handleClientMessage(xev);
break;
}
}
}
static class GrabbedKey {
long keysym;
long modifiers;
GrabbedKey(long keysym, long modifiers) {
this.keysym = keysym;
this.modifiers = modifiers;
}
GrabbedKey(KeyEvent ev) {
init(ev);
}
private void init(KeyEvent e) {
byte[] bdata = getBData(e);
long data = Native.toData(bdata);
if (data == 0) {
return;
}
try {
XToolkit.awtLock();
try {
keysym = XWindow.getKeySymForAWTKeyCode(e.getKeyCode());
} finally {
XToolkit.awtUnlock();
}
XKeyEvent ke = new XKeyEvent(data);
// We recognize only these masks
modifiers = ke.get_state() & (ShiftMask | ControlMask | LockMask);
if (xembedLog.isLoggable(Level.FINEST)) xembedLog.finest("Mapped " + e + " to " + this);
} finally {
XlibWrapper.unsafe.freeMemory(data);
}
}
public int hashCode() {
return (int)keysym & 0xFFFFFFFF;
}
public boolean equals(Object o) {
if (!(o instanceof GrabbedKey)) {
return false;
}
GrabbedKey key = (GrabbedKey)o;
return (keysym == key.keysym && modifiers == key.modifiers);
}
public String toString() {
return "Key combination[keysym=" + keysym + ", mods=" + modifiers + "]";
}
}
}