Merge change Id8c9cb2f into eclair

* changes:
  More fix #2163209: alarm clock rings but is hidden behind lock screen

core/java/android/view/WindowManagerPolicy.java

@@ -262,6 +262,13 @@ public interface WindowManagerPolicy {
          */
         boolean isVisibleLw();
         
+        /**
+         * Like {@link #isVisibleLw}, but also counts a window that is currently
+         * "hidden" behind the keyguard as visible.  This allows us to apply
+         * things like window flags that impact the keyguard.
+         */
+        boolean isVisibleOrBehindKeyguardLw();
+        
         /**
          * Is this window currently visible to the user on-screen?  It is 
          * displayed either if it is visible or it is currently running an 

services/java/com/android/server/WindowManagerService.java

@@ -7573,6 +7573,21 @@ public class WindowManagerService extends IWindowManager.Stub
                     && !mExiting && !mDestroying;
         }
 
+        /**
+         * Like {@link #isVisibleLw}, but also counts a window that is currently
+         * "hidden" behind the keyguard as visible.  This allows us to apply
+         * things like window flags that impact the keyguard.
+         * XXX I am starting to think we need to have ANOTHER visibility flag
+         * for this "hidden behind keyguard" state rather than overloading
+         * mPolicyVisibility.  Ungh.
+         */
+        public boolean isVisibleOrBehindKeyguardLw() {
+            final AppWindowToken atoken = mAppToken;
+            return mSurface != null && !mAttachedHidden
+                    && (atoken == null ? mPolicyVisibility : !atoken.hiddenRequested)
+                    && !mExiting && !mDestroying;
+        }
+
         /**
          * Is this window visible, ignoring its app token?  It is not visible
          * if there is no surface, or we are in the process of running an exit animation