| /* |
| * Copyright (c) 2003, 2008, 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.Component; |
| import java.awt.Cursor; |
| import java.awt.Window; |
| |
| import java.awt.datatransfer.Transferable; |
| |
| import java.awt.dnd.DnDConstants; |
| import java.awt.dnd.DragGestureEvent; |
| import java.awt.dnd.InvalidDnDOperationException; |
| |
| import java.util.*; |
| |
| import sun.util.logging.PlatformLogger; |
| |
| import sun.awt.dnd.SunDragSourceContextPeer; |
| import sun.awt.dnd.SunDropTargetContextPeer; |
| import sun.awt.SunToolkit; |
| import sun.awt.AWTAccessor; |
| |
| /** |
| * The XDragSourceContextPeer class is the class responsible for handling |
| * the interaction between the XDnD/Motif DnD subsystem and Java drag sources. |
| * |
| * @since 1.5 |
| */ |
| public final class XDragSourceContextPeer |
| extends SunDragSourceContextPeer implements XDragSourceProtocolListener { |
| private static final PlatformLogger logger = |
| PlatformLogger.getLogger("sun.awt.X11.xembed.xdnd.XDragSourceContextPeer"); |
| |
| /* The events selected on the root window when the drag begins. */ |
| private static final int ROOT_EVENT_MASK = (int)XConstants.ButtonMotionMask | |
| (int)XConstants.KeyPressMask | (int)XConstants.KeyReleaseMask; |
| /* The events to be delivered during grab. */ |
| private static final int GRAB_EVENT_MASK = (int)XConstants.ButtonPressMask | |
| (int)XConstants.ButtonMotionMask | (int)XConstants.ButtonReleaseMask; |
| |
| /* The event mask of the root window before the drag operation starts. */ |
| private long rootEventMask = 0; |
| private boolean dndInProgress = false; |
| private boolean dragInProgress = false; |
| private long dragRootWindow = 0; |
| |
| /* The protocol chosen for the communication with the current drop target. */ |
| private XDragSourceProtocol dragProtocol = null; |
| /* The drop action chosen by the current drop target. */ |
| private int targetAction = DnDConstants.ACTION_NONE; |
| /* The set of drop actions supported by the drag source. */ |
| private int sourceActions = DnDConstants.ACTION_NONE; |
| /* The drop action selected by the drag source based on the modifiers state |
| and the action selected by the current drop target. */ |
| private int sourceAction = DnDConstants.ACTION_NONE; |
| /* The data formats supported by the drag source for the current drag |
| operation. */ |
| private long[] sourceFormats = null; |
| /* The XID of the root subwindow that contains the current target. */ |
| private long targetRootSubwindow = 0; |
| /* The pointer location. */ |
| private int xRoot = 0; |
| private int yRoot = 0; |
| /* Keyboard modifiers state. */ |
| private int eventState = 0; |
| |
| /* XEmbed DnD support. We act as a proxy between source and target. */ |
| private long proxyModeSourceWindow = 0; |
| |
| /* The singleton instance. */ |
| private static final XDragSourceContextPeer theInstance = |
| new XDragSourceContextPeer(null); |
| |
| private XDragSourceContextPeer(DragGestureEvent dge) { |
| super(dge); |
| } |
| |
| static XDragSourceProtocolListener getXDragSourceProtocolListener() { |
| return theInstance; |
| } |
| |
| static XDragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) |
| throws InvalidDnDOperationException { |
| theInstance.setTrigger(dge); |
| return theInstance; |
| } |
| |
| 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); |
| } |
| |
| public long getProxyModeSourceWindow() { |
| return proxyModeSourceWindow; |
| } |
| |
| private void setProxyModeSourceWindowImpl(long window) { |
| proxyModeSourceWindow = window; |
| } |
| |
| public static void setProxyModeSourceWindow(long window) { |
| theInstance.setProxyModeSourceWindowImpl(window); |
| } |
| |
| /** |
| * set cursor |
| */ |
| |
| public void setCursor(Cursor c) throws InvalidDnDOperationException { |
| XToolkit.awtLock(); |
| try { |
| super.setCursor(c); |
| } finally { |
| XToolkit.awtUnlock(); |
| } |
| } |
| |
| protected void setNativeCursor(long nativeCtxt, Cursor c, int cType) { |
| assert XToolkit.isAWTLockHeldByCurrentThread(); |
| |
| if (c == null) { |
| return; |
| } |
| |
| long xcursor = XGlobalCursorManager.getCursor(c); |
| |
| if (xcursor == 0) { |
| return; |
| } |
| |
| XlibWrapper.XChangeActivePointerGrab(XToolkit.getDisplay(), |
| GRAB_EVENT_MASK, |
| xcursor, |
| XConstants.CurrentTime); |
| } |
| |
| protected boolean needsBogusExitBeforeDrop() { |
| return false; |
| } |
| |
| private void throwGrabFailureException(String msg, int grabStatus) |
| throws InvalidDnDOperationException { |
| String msgCause = ""; |
| switch (grabStatus) { |
| case XConstants.GrabNotViewable: msgCause = "not viewable"; break; |
| case XConstants.AlreadyGrabbed: msgCause = "already grabbed"; break; |
| case XConstants.GrabInvalidTime: msgCause = "invalid time"; break; |
| case XConstants.GrabFrozen: msgCause = "grab frozen"; break; |
| default: msgCause = "unknown failure"; break; |
| } |
| throw new InvalidDnDOperationException(msg + ": " + msgCause); |
| } |
| |
| /** |
| * 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); |
| } |
| |
| /** |
| * The caller must own awtLock. |
| */ |
| private void cleanupTargetInfo() { |
| targetAction = DnDConstants.ACTION_NONE; |
| dragProtocol = null; |
| targetRootSubwindow = 0; |
| } |
| |
| private void removeDnDGrab(long time) { |
| assert XToolkit.isAWTLockHeldByCurrentThread(); |
| |
| XlibWrapper.XUngrabPointer(XToolkit.getDisplay(), time); |
| XlibWrapper.XUngrabKeyboard(XToolkit.getDisplay(), time); |
| |
| /* Restore the root event mask if it was changed. */ |
| if ((rootEventMask | ROOT_EVENT_MASK) != rootEventMask && |
| dragRootWindow != 0) { |
| |
| XlibWrapper.XSelectInput(XToolkit.getDisplay(), |
| dragRootWindow, |
| rootEventMask); |
| } |
| |
| rootEventMask = 0; |
| dragRootWindow = 0; |
| } |
| |
| private boolean processClientMessage(XClientMessageEvent xclient) { |
| if (dragProtocol != null) { |
| return dragProtocol.processClientMessage(xclient); |
| } |
| return false; |
| } |
| |
| /** |
| * Updates the source action according to the specified state. |
| * |
| * @returns true if the source |
| */ |
| private boolean updateSourceAction(int state) { |
| int action = SunDragSourceContextPeer.convertModifiersToDropAction(XWindow.getModifiers(state, 0, 0), |
| sourceActions); |
| if (sourceAction == action) { |
| return false; |
| } |
| sourceAction = action; |
| return true; |
| } |
| |
| /** |
| * Returns the client window under the specified root subwindow. |
| */ |
| private static long findClientWindow(long window) { |
| if (XlibUtil.isTrueToplevelWindow(window)) { |
| return window; |
| } |
| |
| Set<Long> children = XlibUtil.getChildWindows(window); |
| for (Long child : children) { |
| long win = findClientWindow(child); |
| if (win != 0) { |
| return win; |
| } |
| } |
| |
| return 0; |
| } |
| |
| 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; |
| } |
| |
| private void updateTargetWindow(XMotionEvent xmotion) { |
| assert XToolkit.isAWTLockHeldByCurrentThread(); |
| |
| int x = xmotion.get_x_root(); |
| int y = xmotion.get_y_root(); |
| long time = xmotion.get_time(); |
| long subwindow = xmotion.get_subwindow(); |
| |
| /* |
| * If this event had occurred before the pointer was grabbed, |
| * query the server for the current root subwindow. |
| */ |
| if (xmotion.get_window() != xmotion.get_root()) { |
| XlibWrapper.XQueryPointer(XToolkit.getDisplay(), |
| xmotion.get_root(), |
| XlibWrapper.larg1, // root |
| XlibWrapper.larg2, // subwindow |
| XlibWrapper.larg3, // x_root |
| XlibWrapper.larg4, // y_root |
| XlibWrapper.larg5, // x |
| XlibWrapper.larg6, // y |
| XlibWrapper.larg7); // modifiers |
| subwindow = Native.getLong(XlibWrapper.larg2); |
| } |
| |
| if (targetRootSubwindow != subwindow) { |
| if (dragProtocol != null) { |
| dragProtocol.sendLeaveMessage(time); |
| |
| /* |
| * Neither Motif DnD nor XDnD provide a mean for the target |
| * to notify the source that the pointer exits the drop site |
| * that occupies the whole top level. |
| * We detect this situation and post dragExit. |
| */ |
| if (targetAction != DnDConstants.ACTION_NONE) { |
| dragExit(x, y); |
| } |
| } |
| |
| /* Update the global state. */ |
| doUpdateTargetWindow(subwindow, time); |
| |
| if (dragProtocol != null) { |
| dragProtocol.sendEnterMessage(sourceFormats, |
| sourceAction, |
| sourceActions, |
| time); |
| } |
| } |
| } |
| |
| /* |
| * DO NOT USE is_hint field of xmotion since it could not be set when we |
| * convert XKeyEvent or XButtonRelease to XMotionEvent. |
| */ |
| private void processMouseMove(XMotionEvent xmotion) { |
| if (!dragInProgress) { |
| return; |
| } |
| if (xRoot != xmotion.get_x_root() || yRoot != xmotion.get_y_root()) { |
| xRoot = xmotion.get_x_root(); |
| yRoot = xmotion.get_y_root(); |
| |
| postDragSourceDragEvent(targetAction, |
| XWindow.getModifiers(xmotion.get_state(),0,0), |
| xRoot, yRoot, DISPATCH_MOUSE_MOVED); |
| } |
| |
| if (eventState != xmotion.get_state()) { |
| if (updateSourceAction(xmotion.get_state()) && dragProtocol != null) { |
| postDragSourceDragEvent(targetAction, |
| XWindow.getModifiers(xmotion.get_state(),0,0), |
| xRoot, yRoot, DISPATCH_CHANGED); |
| } |
| eventState = xmotion.get_state(); |
| } |
| |
| updateTargetWindow(xmotion); |
| |
| if (dragProtocol != null) { |
| dragProtocol.sendMoveMessage(xmotion.get_x_root(), |
| xmotion.get_y_root(), |
| sourceAction, sourceActions, |
| xmotion.get_time()); |
| } |
| } |
| |
| private void processDrop(XButtonEvent xbutton) { |
| try { |
| dragProtocol.initiateDrop(xbutton.get_x_root(), |
| xbutton.get_y_root(), |
| sourceAction, sourceActions, |
| xbutton.get_time()); |
| } catch (XException e) { |
| cleanup(xbutton.get_time()); |
| } |
| } |
| |
| private boolean processProxyModeEvent(XEvent ev) { |
| if (getProxyModeSourceWindow() == 0) { |
| return false; |
| } |
| |
| if (ev.get_type() != (int)XConstants.ClientMessage) { |
| return false; |
| } |
| |
| if (logger.isLoggable(PlatformLogger.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; |
| } |
| |
| /** |
| * The caller must own awtLock. |
| * |
| * @returns true if the even was processed and shouldn't be passed along. |
| */ |
| private boolean doProcessEvent(XEvent ev) { |
| assert XToolkit.isAWTLockHeldByCurrentThread(); |
| |
| if (processProxyModeEvent(ev)) { |
| return true; |
| } |
| |
| if (!dndInProgress) { |
| return false; |
| } |
| |
| switch (ev.get_type()) { |
| case XConstants.ClientMessage: { |
| XClientMessageEvent xclient = ev.get_xclient(); |
| return processClientMessage(xclient); |
| } |
| case XConstants.DestroyNotify: { |
| XDestroyWindowEvent xde = ev.get_xdestroywindow(); |
| |
| /* Target crashed during drop processing - cleanup. */ |
| if (!dragInProgress && |
| dragProtocol != null && |
| xde.get_window() == dragProtocol.getTargetWindow()) { |
| cleanup(XConstants.CurrentTime); |
| return true; |
| } |
| /* Pass along */ |
| return false; |
| } |
| } |
| |
| if (!dragInProgress) { |
| return false; |
| } |
| |
| /* Process drag-only messages. */ |
| switch (ev.get_type()) { |
| case XConstants.KeyRelease: |
| case XConstants.KeyPress: { |
| XKeyEvent xkey = ev.get_xkey(); |
| long keysym = XlibWrapper.XKeycodeToKeysym(XToolkit.getDisplay(), |
| xkey.get_keycode(), 0); |
| switch ((int)keysym) { |
| case (int)XKeySymConstants.XK_Escape: { |
| if (ev.get_type() == (int)XConstants.KeyRelease) { |
| cleanup(xkey.get_time()); |
| } |
| break; |
| } |
| case (int)XKeySymConstants.XK_Control_R: |
| case (int)XKeySymConstants.XK_Control_L: |
| case (int)XKeySymConstants.XK_Shift_R: |
| case (int)XKeySymConstants.XK_Shift_L: { |
| XlibWrapper.XQueryPointer(XToolkit.getDisplay(), |
| xkey.get_root(), |
| XlibWrapper.larg1, // root |
| XlibWrapper.larg2, // subwindow |
| XlibWrapper.larg3, // x_root |
| XlibWrapper.larg4, // y_root |
| XlibWrapper.larg5, // x |
| XlibWrapper.larg6, // y |
| XlibWrapper.larg7); // modifiers |
| XMotionEvent xmotion = new XMotionEvent(); |
| try { |
| xmotion.set_type(XConstants.MotionNotify); |
| xmotion.set_serial(xkey.get_serial()); |
| xmotion.set_send_event(xkey.get_send_event()); |
| xmotion.set_display(xkey.get_display()); |
| xmotion.set_window(xkey.get_window()); |
| xmotion.set_root(xkey.get_root()); |
| xmotion.set_subwindow(xkey.get_subwindow()); |
| xmotion.set_time(xkey.get_time()); |
| xmotion.set_x(xkey.get_x()); |
| xmotion.set_y(xkey.get_y()); |
| xmotion.set_x_root(xkey.get_x_root()); |
| xmotion.set_y_root(xkey.get_y_root()); |
| xmotion.set_state((int)Native.getLong(XlibWrapper.larg7)); |
| // we do not use this field, so it's unset for now |
| // xmotion.set_is_hint(???); |
| xmotion.set_same_screen(xkey.get_same_screen()); |
| |
| //It's safe to use key event as motion event since we use only their common fields. |
| processMouseMove(xmotion); |
| } finally { |
| xmotion.dispose(); |
| } |
| break; |
| } |
| } |
| return true; |
| } |
| case XConstants.ButtonPress: |
| return true; |
| case XConstants.MotionNotify: |
| processMouseMove(ev.get_xmotion()); |
| return true; |
| case XConstants.ButtonRelease: { |
| XButtonEvent xbutton = ev.get_xbutton(); |
| /* |
| * Ignore the buttons above 20 due to the bit limit for |
| * InputEvent.BUTTON_DOWN_MASK. |
| * One more bit is reserved for FIRST_HIGH_BIT. |
| */ |
| if (xbutton.get_button() > SunToolkit.MAX_BUTTONS_SUPPORTED) { |
| return true; |
| } |
| |
| /* |
| * On some X servers it could happen that ButtonRelease coordinates |
| * differ from the latest MotionNotify coordinates, so we need to |
| * process it as a mouse motion. |
| */ |
| XMotionEvent xmotion = new XMotionEvent(); |
| try { |
| xmotion.set_type(XConstants.MotionNotify); |
| xmotion.set_serial(xbutton.get_serial()); |
| xmotion.set_send_event(xbutton.get_send_event()); |
| xmotion.set_display(xbutton.get_display()); |
| xmotion.set_window(xbutton.get_window()); |
| xmotion.set_root(xbutton.get_root()); |
| xmotion.set_subwindow(xbutton.get_subwindow()); |
| xmotion.set_time(xbutton.get_time()); |
| xmotion.set_x(xbutton.get_x()); |
| xmotion.set_y(xbutton.get_y()); |
| xmotion.set_x_root(xbutton.get_x_root()); |
| xmotion.set_y_root(xbutton.get_y_root()); |
| xmotion.set_state(xbutton.get_state()); |
| // we do not use this field, so it's unset for now |
| // xmotion.set_is_hint(???); |
| xmotion.set_same_screen(xbutton.get_same_screen()); |
| |
| //It's safe to use key event as motion event since we use only their common fields. |
| processMouseMove(xmotion); |
| } finally { |
| xmotion.dispose(); |
| } |
| if (xbutton.get_button() == XConstants.buttons[0] |
| || xbutton.get_button() == XConstants.buttons[1]) { |
| // drag is initiated with Button1 or Button2 pressed and |
| // ended on release of either of these buttons (as the same |
| // behavior was with our old Motif DnD-based implementation) |
| removeDnDGrab(xbutton.get_time()); |
| dragInProgress = false; |
| if (dragProtocol != null && targetAction != DnDConstants.ACTION_NONE) { |
| /* |
| * ACTION_NONE indicates that either the drop target rejects the |
| * drop or it haven't responded yet. The latter could happen in |
| * case of fast drag, slow target-server connection or slow |
| * drag notifications processing on the target side. |
| */ |
| processDrop(xbutton); |
| } else { |
| cleanup(xbutton.get_time()); |
| } |
| } |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| static boolean processEvent(XEvent ev) { |
| XToolkit.awtLock(); |
| try { |
| try { |
| return theInstance.doProcessEvent(ev); |
| } catch (XException e) { |
| e.printStackTrace(); |
| return false; |
| } |
| } finally { |
| XToolkit.awtUnlock(); |
| } |
| } |
| |
| /* XDragSourceProtocolListener implementation */ |
| |
| public void handleDragReply(int action) { |
| // NOTE: we have to use the current pointer location, since |
| // the target didn't specify the coordinates for the reply. |
| handleDragReply(action, xRoot, yRoot); |
| } |
| |
| public void handleDragReply(int action, int x, int y) { |
| // NOTE: we have to use the current modifiers state, since |
| // the target didn't specify the modifiers state for the reply. |
| handleDragReply(action, xRoot, yRoot, XWindow.getModifiers(eventState,0,0)); |
| } |
| |
| public void handleDragReply(int action, int x, int y, int modifiers) { |
| if (action == DnDConstants.ACTION_NONE && |
| targetAction != DnDConstants.ACTION_NONE) { |
| dragExit(x, y); |
| } else if (action != DnDConstants.ACTION_NONE) { |
| int type = 0; |
| |
| if (targetAction == DnDConstants.ACTION_NONE) { |
| type = SunDragSourceContextPeer.DISPATCH_ENTER; |
| } else { |
| type = SunDragSourceContextPeer.DISPATCH_MOTION; |
| } |
| |
| // Note that we use the modifiers state a |
| postDragSourceDragEvent(action, modifiers, x, y, type); |
| } |
| |
| targetAction = action; |
| } |
| |
| public void handleDragFinished() { |
| /* Assume that the drop was successful. */ |
| handleDragFinished(true); |
| } |
| |
| public void handleDragFinished(boolean success) { |
| /* Assume that the performed drop action is the latest drop action |
| accepted by the drop target. */ |
| handleDragFinished(true, targetAction); |
| } |
| |
| public void handleDragFinished(boolean success, int action) { |
| // NOTE: we have to use the current pointer location, since |
| // the target didn't specify the coordinates for the reply. |
| handleDragFinished(success, action, xRoot, yRoot); |
| } |
| |
| public void handleDragFinished(boolean success, int action, int x, int y) { |
| dragDropFinished(success, action, x, y); |
| |
| dndInProgress = false; |
| cleanup(XConstants.CurrentTime); |
| } |
| } |
