Never close Keyguard automatically.

Also make the bouncer less translucent, so it looks better when
a user double-clicks on a notification (because it is now shown
behind, so we need more background protection).

Bug: 14059777
Change-Id: I2538b0e04ddc25c25a03c65c8a5bd7855720bbf2

packages/Keyguard/res/layout/keyguard_bouncer.xml

@@ -19,7 +19,7 @@
     android:layout_height="match_parent">
 
     <View android:id="@+id/bouncer_background"
-        android:background="#aa000000"
+        android:background="#cc000000"
         android:clickable="true"
         android:layout_width="match_parent"
         android:layout_height="match_parent"/>

packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java

@@ -1668,6 +1668,9 @@ public class PhoneStatusBar extends BaseStatusBar implements DemoMode,
     }
 
     public void animateCollapsePanels(int flags) {
+        if (mState == StatusBarState.KEYGUARD || mState == StatusBarState.SHADE_LOCKED) {
+            return;
+        }
         if (SPEW) {
             Log.d(TAG, "animateCollapse():"
                     + " mExpandedVisible=" + mExpandedVisible

packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarWindowView.java

@@ -108,7 +108,9 @@ public class StatusBarWindowView extends FrameLayout {
         boolean intercept = false;
         if (mNotificationPanel.isFullyExpanded()
                 && mStackScrollLayout.getVisibility() == View.VISIBLE
-                && mService.getBarState() != StatusBarState.KEYGUARD) {
+                && (mService.getBarState() == StatusBarState.SHADE
+                        || (mService.getBarState() == StatusBarState.SHADE_LOCKED
+                                && !mService.isBouncerShowing()))) {
             intercept = mExpandHelper.onInterceptTouchEvent(ev);
         } else if (mNotificationPanel.isFullyExpanded()
                 && mStackScrollLayout.getVisibility() == View.VISIBLE