JBR-9904: Wayland: double shift or double ctrl is not working well after press space or alt key.

Fixing the timestamps of each KeyEvent/MouseEvent/MouseWheelEvent created by WLToolkit.

(cherry picked from commit 4d1f4d9)

Author: OnePatchGuy

src/java.desktop/unix/classes/sun/awt/wl/WLComponentPeer.java

@@ -1289,14 +1289,14 @@ void postMouseEvent(MouseEvent e) {
      * the freshly updated WLInputState, and the previous WLInputState.
      */
     void dispatchPointerEventInContext(WLPointerEvent e, WLInputState oldInputState, WLInputState newInputState) {
+        final long timestamp = System.currentTimeMillis();
+
         final int x = newInputState.getPointerX();
         final int y = newInputState.getPointerY();
         final Point abs = relativePointToAbsolute(new Point(x, y));
         int xAbsolute = abs.x;
         int yAbsolute = abs.y;
 
-        final long timestamp = newInputState.getTimestamp();
-
         if (e.hasEnterEvent()) {
             updateCursorImmediately();
             final MouseEvent mouseEvent = new MouseEvent(getTarget(), MouseEvent.MOUSE_ENTERED,

src/java.desktop/unix/classes/sun/awt/wl/WLInputState.java

@@ -354,6 +354,12 @@ public boolean isPointerOverPeer() {
         return true;
     }
 
+    /**
+     * @return the timestamp of the most recent known {@code wl_pointer::*} event or 0 if no such event is known.
+     *
+     * @apiNote don't use these timestamps for constructing any new {@link java.awt.event.InputEvent}s
+     *          because they are not guaranteed to be based on the midnight of Jan 1, 1970 UTC.
+     */
     public long getTimestamp() {
         return eventWithTimestamp != null ? eventWithTimestamp.getTimestamp() : 0;
     }

src/java.desktop/unix/classes/sun/awt/wl/WLToolkit.java

@@ -353,7 +353,6 @@ private static void dispatchPointerEvent(WLPointerEvent e) {
     }
 
     private static void dispatchKeyboardKeyEvent(long serial,
-                                                 long timestamp,
                                                  int id,
                                                  int keyCode,
                                                  int keyLocation,
@@ -364,13 +363,9 @@ private static void dispatchKeyboardKeyEvent(long serial,
         // Invoked from the native code
         assert EventQueue.isDispatchThread() : "Method must only be invoked on EDT";
 
-        inputState = inputState.updatedFromKeyEvent(serial);
+        final long timestamp = System.currentTimeMillis();
 
-        if (timestamp == 0) {
-            // Happens when a surface was focused with keys already pressed.
-            // Fake the timestamp by peeking at the last known event.
-            timestamp = inputState.getTimestamp();
-        }
+        inputState = inputState.updatedFromKeyEvent(serial);
 
         final long surfacePtr = inputState.surfaceForKeyboardInput();
         final WLComponentPeer peer = peerFromSurface(surfacePtr);

src/java.desktop/unix/native/libawt_wlawt/WLToolkit.c

@@ -454,7 +454,6 @@ wlPostKeyEvent(const struct WLKeyEvent* event)
             tkClass,
             dispatchKeyboardKeyEventMID,
             event->serial,
-            event->timestamp,
             event->id,
             event->keyCode,
             event->keyLocation,
@@ -807,7 +806,7 @@ initJavaRefs(JNIEnv *env, jclass clazz)
                       JNI_FALSE);
     CHECK_NULL_RETURN(dispatchKeyboardKeyEventMID = (*env)->GetStaticMethodID(env, tkClass,
                                                                               "dispatchKeyboardKeyEvent",
-                                                                              "(JJIIIIICI)V"),
+                                                                              "(JIIIIICI)V"),
                       JNI_FALSE);
     CHECK_NULL_RETURN(dispatchKeyboardModifiersEventMID = (*env)->GetStaticMethodID(env, tkClass,
                                                                                     "dispatchKeyboardModifiersEvent",