private boolean processProxyModeEvent(XEvent ev) {
if (getProxyModeSourceWindow() == 0) {
return false;
}
if (ev.get_type() != (int) XConstants.ClientMessage) {
return false;
}
if (logger.isLoggable(PlatformLogger.Level.FINEST)) {
logger.finest(" proxyModeSourceWindow=" + getProxyModeSourceWindow() + " ev=" + ev);
}
XClientMessageEvent xclient = ev.get_xclient();
Iterator dragProtocols = XDragAndDropProtocols.getDragSourceProtocols();
while (dragProtocols.hasNext()) {
XDragSourceProtocol dragProtocol = (XDragSourceProtocol) dragProtocols.next();
if (dragProtocol.processProxyModeEvent(xclient, getProxyModeSourceWindow())) {
return true;
}
}
return false;
}
private void doUpdateTargetWindow(long subwindow, long time) {
long clientWindow = 0;
long proxyWindow = 0;
XDragSourceProtocol protocol = null;
boolean isReceiver = false;
if (subwindow != 0) {
clientWindow = findClientWindow(subwindow);
}
if (clientWindow != 0) {
Iterator dragProtocols = XDragAndDropProtocols.getDragSourceProtocols();
while (dragProtocols.hasNext()) {
XDragSourceProtocol dragProtocol = (XDragSourceProtocol) dragProtocols.next();
if (dragProtocol.attachTargetWindow(clientWindow, time)) {
protocol = dragProtocol;
break;
}
}
}
/* Update the global state. */
dragProtocol = protocol;
targetAction = DnDConstants.ACTION_NONE;
targetRootSubwindow = subwindow;
}
/** The caller must own awtLock. */
public void cleanup(long time) {
if (dndInProgress) {
if (dragProtocol != null) {
dragProtocol.sendLeaveMessage(time);
}
if (targetAction != DnDConstants.ACTION_NONE) {
dragExit(xRoot, yRoot);
}
dragDropFinished(false, DnDConstants.ACTION_NONE, xRoot, yRoot);
}
Iterator dragProtocols = XDragAndDropProtocols.getDragSourceProtocols();
while (dragProtocols.hasNext()) {
XDragSourceProtocol dragProtocol = (XDragSourceProtocol) dragProtocols.next();
try {
dragProtocol.cleanup();
} catch (XException xe) {
// Ignore the exception.
}
}
dndInProgress = false;
dragInProgress = false;
dragRootWindow = 0;
sourceFormats = null;
sourceActions = DnDConstants.ACTION_NONE;
sourceAction = DnDConstants.ACTION_NONE;
eventState = 0;
xRoot = 0;
yRoot = 0;
cleanupTargetInfo();
removeDnDGrab(time);
}
protected void startDrag(Transferable transferable, long[] formats, Map formatMap) {
Component component = getTrigger().getComponent();
Component c = null;
XWindowPeer wpeer = null;
for (c = component;
c != null && !(c instanceof Window);
c = AWTAccessor.getComponentAccessor().getParent(c)) ;
if (c instanceof Window) {
wpeer = (XWindowPeer) c.getPeer();
}
if (wpeer == null) {
throw new InvalidDnDOperationException("Cannot find top-level for the drag source component");
}
long xcursor = 0;
long rootWindow = 0;
long dragWindow = 0;
long timeStamp = 0;
/* Retrieve the X cursor for the drag operation. */
{
Cursor cursor = getCursor();
if (cursor != null) {
xcursor = XGlobalCursorManager.getCursor(cursor);
}
}
XToolkit.awtLock();
try {
if (proxyModeSourceWindow != 0) {
throw new InvalidDnDOperationException("Proxy drag in progress");
}
if (dndInProgress) {
throw new InvalidDnDOperationException("Drag in progress");
}
/* Determine the root window for the drag operation. */
{
long screen = XlibWrapper.XScreenNumberOfScreen(wpeer.getScreen());
rootWindow = XlibWrapper.RootWindow(XToolkit.getDisplay(), screen);
}
dragWindow = XWindow.getXAWTRootWindow().getWindow();
timeStamp = XToolkit.getCurrentServerTime();
int dropActions = getDragSourceContext().getSourceActions();
Iterator dragProtocols = XDragAndDropProtocols.getDragSourceProtocols();
while (dragProtocols.hasNext()) {
XDragSourceProtocol dragProtocol = (XDragSourceProtocol) dragProtocols.next();
try {
dragProtocol.initializeDrag(
dropActions, transferable,
formatMap, formats);
} catch (XException xe) {
throw (InvalidDnDOperationException) new InvalidDnDOperationException().initCause(xe);
}
}
/* Install X grabs. */
{
int status;
XWindowAttributes wattr = new XWindowAttributes();
try {
status = XlibWrapper.XGetWindowAttributes(XToolkit.getDisplay(), rootWindow, wattr.pData);
if (status == 0) {
throw new InvalidDnDOperationException("XGetWindowAttributes failed");
}
rootEventMask = wattr.get_your_event_mask();
XlibWrapper.XSelectInput(
XToolkit.getDisplay(), rootWindow, rootEventMask | ROOT_EVENT_MASK);
} finally {
wattr.dispose();
}
XBaseWindow.ungrabInput();
status =
XlibWrapper.XGrabPointer(
XToolkit.getDisplay(),
rootWindow,
0,
GRAB_EVENT_MASK,
XConstants.GrabModeAsync,
XConstants.GrabModeAsync,
XConstants.None,
xcursor,
timeStamp);
if (status != XConstants.GrabSuccess) {
cleanup(timeStamp);
throwGrabFailureException("Cannot grab pointer", status);
return;
}
status =
XlibWrapper.XGrabKeyboard(
XToolkit.getDisplay(),
rootWindow,
0,
XConstants.GrabModeAsync,
XConstants.GrabModeAsync,
timeStamp);
if (status != XConstants.GrabSuccess) {
cleanup(timeStamp);
throwGrabFailureException("Cannot grab keyboard", status);
return;
}
}
/* Update the global state. */
dndInProgress = true;
dragInProgress = true;
dragRootWindow = rootWindow;
sourceActions = dropActions;
sourceFormats = formats;
} finally {
XToolkit.awtUnlock();
}
/* This implementation doesn't use native context */
setNativeContext(0);
SunDropTargetContextPeer.setCurrentJVMLocalSourceTransferable(transferable);
}