diff --git a/core/java/android/view/WindowManager.java b/core/java/android/view/WindowManager.java
index 8a18aaf..9395d5c 100644
--- a/core/java/android/view/WindowManager.java
+++ b/core/java/android/view/WindowManager.java
@@ -388,6 +388,12 @@
         public static final int TYPE_POINTER = FIRST_SYSTEM_WINDOW+18;
 
         /**
+         * Window type: Navigation bar (when distinct from status bar)
+         * @hide
+         */
+        public static final int TYPE_NAVIGATION_BAR = FIRST_SYSTEM_WINDOW+19;
+
+        /**
          * End of types of system windows.
          */
         public static final int LAST_SYSTEM_WINDOW      = 2999;
diff --git a/packages/SystemUI/res/layout/navigation_bar.xml b/packages/SystemUI/res/layout/navigation_bar.xml
new file mode 100644
index 0000000..eba4480
--- /dev/null
+++ b/packages/SystemUI/res/layout/navigation_bar.xml
@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/* apps/common/assets/default/default/skins/StatusBar.xml
+**
+** Copyright 2011, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License"); 
+** you may not use this file except in compliance with the License. 
+** You may obtain a copy of the License at 
+**
+**     http://www.apache.org/licenses/LICENSE-2.0 
+**
+** Unless required by applicable law or agreed to in writing, software 
+** distributed under the License is distributed on an "AS IS" BASIS, 
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
+** See the License for the specific language governing permissions and 
+** limitations under the License.
+*/
+-->
+
+<com.android.systemui.statusbar.phone.NavigationBarView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui"
+    android:layout_height="match_parent"
+    android:layout_width="match_parent"
+    >
+
+    <LinearLayout android:id="@+id/rot0"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent"
+        android:paddingLeft="8dip"
+        android:paddingRight="8dip"
+        android:background="#FF000000"
+        android:orientation="horizontal"
+        >
+
+        <!-- navigation controls -->
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/back"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:src="@drawable/ic_sysbar_back"
+            systemui:keyCode="4"
+            android:layout_weight="1"
+            />
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/home"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:src="@drawable/ic_sysbar_home"
+            systemui:keyCode="3"
+            android:layout_weight="1"
+            />
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/menu"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:src="@drawable/ic_sysbar_menu"
+            systemui:keyCode="82"
+            android:layout_weight="1"
+            />
+    </LinearLayout>
+
+    <LinearLayout android:id="@+id/rot90"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent"
+        android:background="#FF000000"
+        android:orientation="vertical"
+        android:visibility="gone"
+        >
+
+        <!-- navigation controls -->
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/menu"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_sysbar_menu"
+            systemui:keyCode="82"
+            android:layout_weight="1"
+            />
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/home"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_sysbar_home"
+            systemui:keyCode="3"
+            android:layout_weight="1"
+            />
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/back"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_sysbar_back"
+            systemui:keyCode="4"
+            android:layout_weight="1"
+            />
+    </LinearLayout>
+
+    <LinearLayout android:id="@+id/rot270"
+        android:layout_height="match_parent"
+        android:layout_width="match_parent"
+        android:background="#FF000000"
+        android:orientation="vertical"
+        android:visibility="gone"
+        >
+
+        <!-- navigation controls -->
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/back"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_sysbar_back"
+            systemui:keyCode="4"
+            android:layout_weight="1"
+            />
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/home"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_sysbar_home"
+            systemui:keyCode="3"
+            android:layout_weight="1"
+            />
+        <com.android.systemui.statusbar.policy.KeyButtonView android:id="@+id/menu"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:src="@drawable/ic_sysbar_menu"
+            systemui:keyCode="82"
+            android:layout_weight="1"
+            />
+    </LinearLayout>
+</com.android.systemui.statusbar.phone.NavigationBarView>
diff --git a/packages/SystemUI/res/values-land/dimens.xml b/packages/SystemUI/res/values-land/dimens.xml
new file mode 100644
index 0000000..bcc8da1
--- /dev/null
+++ b/packages/SystemUI/res/values-land/dimens.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ * Copyright (c) 2011, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+-->
+<resources>
+    <!-- thickness (width) of the navigation bar on phones that require it -->
+    <dimen name="navigation_bar_size">42dp</dimen>
+</resources>
diff --git a/packages/SystemUI/res/values/dimens.xml b/packages/SystemUI/res/values/dimens.xml
index 88cd43c..a2577cb 100644
--- a/packages/SystemUI/res/values/dimens.xml
+++ b/packages/SystemUI/res/values/dimens.xml
@@ -31,5 +31,7 @@
     <!-- Width of scrollable area in recents -->
     <dimen name="status_bar_recents_width">356dp</dimen>
 
+    <!-- thickness (height) of the navigation bar on phones that require it -->
+    <dimen name="navigation_bar_size">42dp</dimen>
 </resources>
 
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
new file mode 100644
index 0000000..ec169e5
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarView.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.systemui.statusbar.phone;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.Display;
+import android.view.KeyEvent;
+import android.view.View;
+import android.view.Surface;
+import android.view.WindowManager;
+import android.widget.LinearLayout;
+import android.content.res.Configuration;
+
+import com.android.systemui.R;
+
+public class NavigationBarView extends LinearLayout {
+    final Display mDisplay;
+    View[] mRotatedViews = new View[4];
+
+    public NavigationBarView(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mDisplay = ((WindowManager)context.getSystemService(
+                Context.WINDOW_SERVICE)).getDefaultDisplay();
+    }
+
+    public void onFinishInflate() {
+        mRotatedViews[Surface.ROTATION_0] = 
+        mRotatedViews[Surface.ROTATION_180] = findViewById(R.id.rot0);
+
+        mRotatedViews[Surface.ROTATION_90] = findViewById(R.id.rot90);
+        
+        mRotatedViews[Surface.ROTATION_270] = findViewById(R.id.rot270);
+    }
+
+    public void reorient() {
+        final int rot = mDisplay.getRotation();
+        for (int i=0; i<4; i++) {
+            mRotatedViews[i].setVisibility(View.GONE);
+        }
+        mRotatedViews[rot].setVisibility(View.VISIBLE);
+
+        android.util.Log.d("NavigationBarView", "reorient(): rot=" + mDisplay.getRotation());
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
index 1e46246..97c8aee 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
@@ -45,6 +45,7 @@
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
+import android.view.Surface;
 import android.view.VelocityTracker;
 import android.view.View;
 import android.view.ViewGroup;
@@ -141,6 +142,9 @@
     // for immersive activities
     private View mIntruderAlertView;
 
+    // on-screen navigation buttons
+    private NavigationBarView mNavigationBarView;
+
     // the tracker view
     TrackingView mTrackingView;
     WindowManager.LayoutParams mTrackingParams;
@@ -199,7 +203,9 @@
 
         super.start();
 
-        addIntruderView();
+        addNavigationBar();
+
+        //addIntruderView();
 
         // Lastly, call to the icon policy to install/update all the icons.
         mIconPolicy = new PhoneStatusBarPolicy(mContext);
@@ -223,6 +229,9 @@
         mIntruderAlertView.setVisibility(View.GONE);
         mIntruderAlertView.setClickable(true);
 
+        mNavigationBarView = 
+            (NavigationBarView) View.inflate(context, R.layout.navigation_bar, null);
+
         PhoneStatusBarView sb = (PhoneStatusBarView)View.inflate(context,
                 R.layout.status_bar, null);
         sb.mService = this;
@@ -292,6 +301,58 @@
         return res.getDimensionPixelSize(com.android.internal.R.dimen.status_bar_height);
     }
 
+    // For small-screen devices (read: phones) that lack hardware navigation buttons
+    private void addNavigationBar() {
+        mNavigationBarView.reorient();
+        WindowManagerImpl.getDefault().addView(
+                mNavigationBarView, getNavigationBarLayoutParams());
+    }
+
+    private void repositionNavigationBar() {
+        mNavigationBarView.reorient();
+        WindowManagerImpl.getDefault().updateViewLayout(
+                mNavigationBarView, getNavigationBarLayoutParams());
+    }
+
+    private WindowManager.LayoutParams getNavigationBarLayoutParams() {
+        final int rotation = mDisplay.getRotation();
+        final boolean sideways = 
+            (rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270);
+
+        final Resources res = mContext.getResources();
+        final int size = res.getDimensionPixelSize(R.dimen.navigation_bar_size);
+
+        WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
+                sideways ? size : ViewGroup.LayoutParams.MATCH_PARENT,
+                sideways ? ViewGroup.LayoutParams.MATCH_PARENT : size,
+                WindowManager.LayoutParams.TYPE_NAVIGATION_BAR,
+                    0
+                    | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
+                    | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
+                    | WindowManager.LayoutParams.FLAG_TOUCHABLE_WHEN_WAKING
+                    | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
+                    | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
+                PixelFormat.TRANSLUCENT);
+
+        lp.setTitle("NavigationBar");
+        switch (rotation) {
+            case Surface.ROTATION_90:
+                // device has been turned 90deg counter-clockwise
+                lp.gravity = Gravity.RIGHT | Gravity.FILL_VERTICAL;
+                break;
+            case Surface.ROTATION_270:
+                // device has been turned 90deg clockwise
+                lp.gravity = Gravity.LEFT | Gravity.FILL_VERTICAL;
+                break;
+            default:
+                lp.gravity = Gravity.BOTTOM | Gravity.FILL_HORIZONTAL;
+                break;
+        }
+        lp.windowAnimations = 0;
+
+        return lp;
+    }
+
     private void addIntruderView() {
         final int height = getStatusBarHeight();
 
@@ -1497,6 +1558,7 @@
                 animateCollapse();
             }
             else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
+                repositionNavigationBar();
                 updateResources();
             }
         }
diff --git a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
index a37ccc7..8a29419 100755
--- a/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
+++ b/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
@@ -111,6 +111,7 @@
 import static android.view.WindowManager.LayoutParams.TYPE_TOAST;
 import static android.view.WindowManager.LayoutParams.TYPE_WALLPAPER;
 import static android.view.WindowManager.LayoutParams.TYPE_POINTER;
+import static android.view.WindowManager.LayoutParams.TYPE_NAVIGATION_BAR;
 import android.view.WindowManagerImpl;
 import android.view.WindowManagerPolicy;
 import android.view.KeyCharacterMap.FallbackAction;
@@ -175,14 +176,16 @@
     // responsible for power management when displayed.
     static final int KEYGUARD_LAYER = 15;
     static final int KEYGUARD_DIALOG_LAYER = 16;
+    // the navigation bar, if available, shows atop most things
+    static final int NAVIGATION_BAR_LAYER = 17;
     // the drag layer: input for drag-and-drop is associated with this window,
     // which sits above all other focusable windows
-    static final int DRAG_LAYER = 17;
+    static final int DRAG_LAYER = 18;
     // things in here CAN NOT take focus, but are shown on top of everything else.
-    static final int SYSTEM_OVERLAY_LAYER = 18;
-    static final int SECURE_SYSTEM_OVERLAY_LAYER = 19;
+    static final int SYSTEM_OVERLAY_LAYER = 19;
+    static final int SECURE_SYSTEM_OVERLAY_LAYER = 20;
     // the (mouse) pointer layer
-    static final int POINTER_LAYER = 20;
+    static final int POINTER_LAYER = 21;
 
     static final int APPLICATION_MEDIA_SUBLAYER = -2;
     static final int APPLICATION_MEDIA_OVERLAY_SUBLAYER = -1;
@@ -228,6 +231,8 @@
     WindowState mStatusBar = null;
     boolean mStatusBarCanHide;
     final ArrayList<WindowState> mStatusBarPanels = new ArrayList<WindowState>();
+    WindowState mNavigationBar = null;
+
     WindowState mKeyguard = null;
     KeyguardViewMediator mKeyguardMediator;
     GlobalActions mGlobalActions;
@@ -1037,6 +1042,8 @@
             return DRAG_LAYER;
         case TYPE_POINTER:
             return POINTER_LAYER;
+        case TYPE_NAVIGATION_BAR:
+            return NAVIGATION_BAR_LAYER;
         }
         Log.e(TAG, "Unknown window type: " + type);
         return APPLICATION_LAYER;
@@ -1214,6 +1221,13 @@
                         com.android.internal.R.bool.config_statusBarCanHide);
 
                 break;
+            case TYPE_NAVIGATION_BAR:
+                mContext.enforceCallingOrSelfPermission(
+                        android.Manifest.permission.STATUS_BAR_SERVICE,
+                        "PhoneWindowManager");
+                mNavigationBar = win;
+                if (DEBUG_LAYOUT) Log.i(TAG, "NAVIGATION BAR: " + mNavigationBar);
+                break;
             case TYPE_STATUS_BAR_PANEL:
                 mContext.enforceCallingOrSelfPermission(
                         android.Manifest.permission.STATUS_BAR_SERVICE,
@@ -1240,9 +1254,10 @@
     public void removeWindowLw(WindowState win) {
         if (mStatusBar == win) {
             mStatusBar = null;
-        }
-        else if (mKeyguard == win) {
+        } else if (mKeyguard == win) {
             mKeyguard = null;
+        } else if (mNavigationBar == win) {
+            mNavigationBar = null;
         } else {
             mStatusBarPanels.remove(win);
         }
@@ -1609,17 +1624,48 @@
         mDockBottom = mContentBottom = mCurBottom = displayHeight;
         mDockLayer = 0x10000000;
 
+        // start with the current dock rect, which will be (0,0,displayWidth,displayHeight)
+        final Rect pf = mTmpParentFrame;
+        final Rect df = mTmpDisplayFrame;
+        final Rect vf = mTmpVisibleFrame;
+        pf.left = df.left = vf.left = mDockLeft;
+        pf.top = df.top = vf.top = mDockTop;
+        pf.right = df.right = vf.right = mDockRight;
+        pf.bottom = df.bottom = vf.bottom = mDockBottom;
+
         // decide where the status bar goes ahead of time
         if (mStatusBar != null) {
-            final Rect pf = mTmpParentFrame;
-            final Rect df = mTmpDisplayFrame;
-            final Rect vf = mTmpVisibleFrame;
-            pf.left = df.left = vf.left = 0;
-            pf.top = df.top = vf.top = 0;
-            pf.right = df.right = vf.right = displayWidth;
-            pf.bottom = df.bottom = vf.bottom = displayHeight;
-            
+            Rect navr = null;
+            if (mNavigationBar != null) {
+                mNavigationBar.computeFrameLw(pf, df, vf, vf);
+                if (mNavigationBar.isVisibleLw()) {
+                    navr = mNavigationBar.getFrameLw();
+
+                    if (navr.top == 0) {
+                        // Navigation bar is vertical
+                        if (mDockLeft == navr.left) {
+                            mDockLeft = navr.right;
+                        } else if (mDockRight == navr.right) {
+                            mDockRight = navr.left;
+                        }
+                    } else {
+                        // Navigation bar horizontal, at bottom
+                        if (mDockBottom == navr.bottom) {
+                            mDockBottom = navr.top;
+                        }
+                    }
+                }
+            }
+            if (DEBUG_LAYOUT) Log.i(TAG, "mNavigationBar frame: " + navr);
+
+            // apply navigation bar insets
+            pf.left = df.left = vf.left = mDockLeft;
+            pf.top = df.top = vf.top = mDockTop;
+            pf.right = df.right = vf.right = mDockRight;
+            pf.bottom = df.bottom = vf.bottom = mDockBottom;
+
             mStatusBar.computeFrameLw(pf, df, vf, vf);
+
             if (mStatusBar.isVisibleLw()) {
                 // If the status bar is hidden, we don't want to cause
                 // windows behind it to scroll.
@@ -1630,14 +1676,18 @@
                     // status bar is visible.
                     if (mDockTop == r.top) mDockTop = r.bottom;
                     else if (mDockBottom == r.bottom) mDockBottom = r.top;
+                    
                     mContentTop = mCurTop = mDockTop;
                     mContentBottom = mCurBottom = mDockBottom;
-                    if (DEBUG_LAYOUT) Log.v(TAG, "Status bar: mDockTop=" + mDockTop
-                            + " mContentTop=" + mContentTop
-                            + " mCurTop=" + mCurTop
-                            + " mDockBottom=" + mDockBottom
-                            + " mContentBottom=" + mContentBottom
-                            + " mCurBottom=" + mCurBottom);
+                    mContentLeft = mCurLeft = mDockLeft;
+                    mContentRight = mCurRight = mDockRight;
+
+                    if (DEBUG_LAYOUT) Log.v(TAG, "Status bar: " +
+                        String.format(
+                            "dock=[%d,%d][%d,%d] content=[%d,%d][%d,%d] cur=[%d,%d][%d,%d]",
+                            mDockLeft, mDockTop, mDockRight, mDockBottom,
+                            mContentLeft, mContentTop, mContentRight, mContentBottom,
+                            mCurLeft, mCurTop, mCurRight, mCurBottom));
                 } else {
                     // Status bar can't go away; the part of the screen it
                     // covers does not exist for anything behind it.
@@ -1647,12 +1697,32 @@
                     } else if ((mRestrictedScreenHeight-mRestrictedScreenTop) == r.bottom) {
                         mRestrictedScreenHeight -= (r.bottom-r.top);
                     }
+
+                    if (navr != null) {
+                        if (navr.top == 0) {
+                            // Navigation bar is vertical
+                            if (mRestrictedScreenLeft == navr.left) {
+                                mRestrictedScreenLeft = navr.right;
+                                mRestrictedScreenWidth -= (navr.right - navr.left);
+                            } else if ((mRestrictedScreenLeft+mRestrictedScreenWidth) == navr.right) {
+                                mRestrictedScreenWidth -= (navr.right - navr.left);
+                            }
+                        } else {
+                            // Navigation bar horizontal, at bottom
+                            if ((mRestrictedScreenHeight-mRestrictedScreenTop) == r.bottom) {
+                                mRestrictedScreenHeight -= (navr.bottom-navr.top);
+                            }
+                        }
+                    }
+
                     mContentTop = mCurTop = mDockTop = mRestrictedScreenTop;
                     mContentBottom = mCurBottom = mDockBottom
                             = mRestrictedScreenTop + mRestrictedScreenHeight;
-                    if (DEBUG_LAYOUT) Log.v(TAG, "Status bar: mRestrictedScreenTop="
-                            + mRestrictedScreenTop
-                            + " mRestrictedScreenHeight=" + mRestrictedScreenHeight);
+                    if (DEBUG_LAYOUT) Log.v(TAG, "Status bar: restricted screen area: ("
+                            + mRestrictedScreenLeft + ","
+                            + mRestrictedScreenTop + ","
+                            + (mRestrictedScreenLeft + mRestrictedScreenWidth) + ","
+                            + (mRestrictedScreenTop + mRestrictedScreenHeight) + ")");
                 }
             }
         }
@@ -1722,6 +1792,8 @@
         final Rect cf = mTmpContentFrame;
         final Rect vf = mTmpVisibleFrame;
         
+        final boolean hasNavBar = (mNavigationBar != null && mNavigationBar.isVisibleLw());
+
         if (attrs.type == TYPE_INPUT_METHOD) {
             pf.left = df.left = cf.left = vf.left = mDockLeft;
             pf.top = df.top = cf.top = vf.top = mDockTop;
@@ -1735,6 +1807,9 @@
 
             if ((fl & (FLAG_LAYOUT_IN_SCREEN | FLAG_FULLSCREEN | FLAG_LAYOUT_INSET_DECOR))
                     == (FLAG_LAYOUT_IN_SCREEN | FLAG_LAYOUT_INSET_DECOR)) {
+                if (DEBUG_LAYOUT)
+                    Log.v(TAG, "layoutWindowLw(" + attrs.getTitle() 
+                            + "): IN_SCREEN, INSET_DECOR, !FULLSCREEN");
                 // This is the case for a normal activity window: we want it
                 // to cover all of the screen space, and it can take care of
                 // moving its contents to account for screen decorations that
@@ -1744,15 +1819,26 @@
                     // frame is the same as the one we are attached to.
                     setAttachedWindowFrames(win, fl, sim, attached, true, pf, df, cf, vf);
                 } else {
-                    if (attrs.type == TYPE_STATUS_BAR_PANEL) {
+                    if (attrs.type == TYPE_STATUS_BAR_PANEL
+                            || attrs.type == TYPE_STATUS_BAR_SUB_PANEL) {
                         // Status bar panels are the only windows who can go on top of
                         // the status bar.  They are protected by the STATUS_BAR_SERVICE
                         // permission, so they have the same privileges as the status
                         // bar itself.
-                        pf.left = df.left = mUnrestrictedScreenLeft;
+                        //
+                        // However, they should still dodge the navigation bar if it exists. A
+                        // straightforward way to do this is to only allow the status bar panels to
+                        // extend to the extrema of the allowable region for the IME dock.
+
+                        pf.left = df.left = hasNavBar ? mDockLeft : mUnrestrictedScreenLeft;
                         pf.top = df.top = mUnrestrictedScreenTop;
-                        pf.right = df.right = mUnrestrictedScreenLeft+mUnrestrictedScreenWidth;
-                        pf.bottom = df.bottom = mUnrestrictedScreenTop+mUnrestrictedScreenHeight;
+                        pf.right = df.right = hasNavBar
+                                            ? mDockRight
+                                            : mUnrestrictedScreenLeft+mUnrestrictedScreenWidth;
+                        pf.bottom = df.bottom = hasNavBar
+                                              ? mDockBottom
+                                              : mUnrestrictedScreenTop+mUnrestrictedScreenHeight;
+
                     } else {
                         pf.left = df.left = mRestrictedScreenLeft;
                         pf.top = df.top = mRestrictedScreenTop;
@@ -1780,15 +1866,21 @@
                     }
                 }
             } else if ((fl & FLAG_LAYOUT_IN_SCREEN) != 0) {
+                if (DEBUG_LAYOUT)
+                    Log.v(TAG, "layoutWindowLw(" + attrs.getTitle() + "): IN_SCREEN");
                 // A window that has requested to fill the entire screen just
                 // gets everything, period.
-                if (attrs.type == TYPE_STATUS_BAR_PANEL) {
-                    pf.left = df.left = cf.left = mUnrestrictedScreenLeft;
+                if (attrs.type == TYPE_STATUS_BAR_PANEL
+                        || attrs.type == TYPE_STATUS_BAR_SUB_PANEL) {
+                    pf.left = df.left = cf.left = hasNavBar ? mDockLeft : mUnrestrictedScreenLeft;
                     pf.top = df.top = cf.top = mUnrestrictedScreenTop;
-                    pf.right = df.right = cf.right
-                            = mUnrestrictedScreenLeft+mUnrestrictedScreenWidth;
-                    pf.bottom = df.bottom = cf.bottom
-                            = mUnrestrictedScreenTop+mUnrestrictedScreenHeight;
+                    pf.right = df.right = cf.right = hasNavBar
+                                        ? mDockRight
+                                        : mUnrestrictedScreenLeft+mUnrestrictedScreenWidth;
+                    pf.bottom = df.bottom = cf.bottom = hasNavBar
+                                          ? mDockBottom
+                                          : mUnrestrictedScreenTop+mUnrestrictedScreenHeight;
+
                 } else {
                     pf.left = df.left = cf.left = mRestrictedScreenLeft;
                     pf.top = df.top = cf.top = mRestrictedScreenTop;
@@ -1805,10 +1897,14 @@
                     vf.set(cf);
                 }
             } else if (attached != null) {
+                if (DEBUG_LAYOUT)
+                    Log.v(TAG, "layoutWindowLw(" + attrs.getTitle() + "): attached to " + attached);
                 // A child window should be placed inside of the same visible
                 // frame that its parent had.
                 setAttachedWindowFrames(win, fl, adjust, attached, false, pf, df, cf, vf);
             } else {
+                if (DEBUG_LAYOUT)
+                    Log.v(TAG, "layoutWindowLw(" + attrs.getTitle() + "): normal window");
                 // Otherwise, a normal window must be placed inside the content
                 // of all screen decorations.
                 pf.left = mContentLeft;
@@ -1844,6 +1940,8 @@
 
         if (DEBUG_LAYOUT) Log.v(TAG, "Compute frame " + attrs.getTitle()
                 + ": sim=#" + Integer.toHexString(sim)
+                + " attach=" + attached + " type=" + attrs.type 
+                + String.format(" flags=0x%08x", fl)
                 + " pf=" + pf.toShortString() + " df=" + df.toShortString()
                 + " cf=" + cf.toShortString() + " vf=" + vf.toShortString());
         
diff --git a/services/input/InputWindow.h b/services/input/InputWindow.h
index f04fb02..208353d 100644
--- a/services/input/InputWindow.h
+++ b/services/input/InputWindow.h
@@ -119,6 +119,7 @@
         TYPE_DRAG               = FIRST_SYSTEM_WINDOW+16,
         TYPE_STATUS_BAR_SUB_PANEL  = FIRST_SYSTEM_WINDOW+17,
         TYPE_POINTER            = FIRST_SYSTEM_WINDOW+18,
+        TYPE_NAVIGATION_BAR     = FIRST_SYSTEM_WINDOW+19,
         LAST_SYSTEM_WINDOW      = 2999,
     };