8010925: COPY AND PASTE TO AND FROM SIGNED APPLET FAILS AFTER FIRST INTERNAL COPY PRFRMD

Reviewed-by: anthony, serb

src/macosx/classes/sun/lwawt/macosx/CClipboard.java

@@ -110,4 +110,12 @@ public class CClipboard extends SunClipboard {
 
     public native void declareTypes(long[] formats, SunClipboard newOwner);
     public native void setData(byte[] data, long format);
+
+    /**
+     * Invokes native check whether a change count on the general pasteboard is different
+     * than when we set it. The different count value means the current owner lost
+     * pasteboard ownership and someone else put data on the clipboard.
+     * @since 1.7
+     */
+    public native void checkPasteboard();
 }

src/macosx/classes/sun/lwawt/macosx/CEmbeddedFrame.java

@@ -112,6 +112,14 @@ public class CEmbeddedFrame extends EmbeddedFrame {
 
     public void handleFocusEvent(boolean focused) {
         this.focused = focused;
+        if (focused) {
+            // see bug 8010925
+            // we can't put this to handleWindowFocusEvent because
+            // it won't be invoced if focuse is moved to a html element
+            // on the same page.
+            CClipboard clipboard = (CClipboard) Toolkit.getDefaultToolkit().getSystemClipboard();
+            clipboard.checkPasteboard();
+        }
         if (parentWindowActive) {
             responder.handleWindowFocusEvent(focused, null);
         }

src/macosx/native/sun/awt/CClipboard.m

@@ -189,18 +189,18 @@ static CClipboard *sClipboard = nil;
 
 - (void) checkPasteboard:(id)application {
     AWT_ASSERT_APPKIT_THREAD;
-
+    
     //NSLog(@"CClipboard checkPasteboard oldCount %d newCount %d newTypes %@", fChangeCount, [[NSPasteboard generalPasteboard] changeCount], [[NSPasteboard generalPasteboard] types]);
-
+    
     // This is called via NSApplicationDidBecomeActiveNotification.
-
+    
     // If the change count on the general pasteboard is different than when we set it
     // someone else put data on the clipboard.  That means the current owner lost ownership.
     NSInteger newChangeCount = [[NSPasteboard generalPasteboard] changeCount];
-
+    
     if (fChangeCount != newChangeCount) {
         fChangeCount = newChangeCount;
-
+        
         [self pasteboardChangedOwner:[NSPasteboard generalPasteboard]];
     }
 }
@@ -371,4 +371,21 @@ JNF_COCOA_EXIT(env);
     return returnValue;
 }
 
+/*
+ * Class:     sun_lwawt_macosx_CClipboard
+ * Method:    checkPasteboard
+ * Signature: ()V
+ */
+JNIEXPORT void JNICALL Java_sun_lwawt_macosx_CClipboard_checkPasteboard
+(JNIEnv *env, jobject inObject )
+{
+    JNF_COCOA_ENTER(env);
+
+    [ThreadUtilities performOnMainThreadWaiting:YES block:^(){
+        [[CClipboard sharedClipboard] checkPasteboard:nil];
+    }];
+        
+    JNF_COCOA_EXIT(env);
+}
+