Add modes to the navigation bar

Change-Id: I3754aa391513641d920fb89690ac4ca328c2942c

6 files changed, 422 insertions, 113 deletions

diff --git a/res/drawable/btn_nav_bar.xml b/res/drawable/btn_nav_bar.xml
new file mode 100644
index 000000000..e597db485
--- /dev/null
+++ b/res/drawable/btn_nav_bar.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 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.
+-->
+
+<!-- THIS FILE IS TEMPORARY - REMOVE WHEN FRAMEWORK RESOURCE IS AVAILABLE -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="false" android:drawable="@*android:drawable/btn_toggle_off" />
+    <item android:state_checked="true" android:drawable="@*android:drawable/btn_toggle_on" />
+</selector>
diff --git a/res/layout/navigation_bar.xml b/res/layout/navigation_bar.xml
index b93d11431..5c76b44e2 100644
--- a/res/layout/navigation_bar.xml
+++ b/res/layout/navigation_bar.xml
@@ -16,11 +16,49 @@
 
 <RelativeLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/search_bar"
+    android:id="@+id/navigation_bar"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="horizontal">
+    android:layout_height="match_parent">
 
+    <ToggleButton
+        android:id="@+id/nav_contacts"
+        android:layout_height="match_parent"
+        android:layout_width="wrap_content"
+        android:textOn="@string/contactsList"
+        android:textOff="@string/contactsList"
+        android:layout_alignParentLeft="true"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentBottom="true"
+        android:background="@drawable/btn_nav_bar"
+        android:paddingLeft="15dip"
+        android:paddingRight="15dip"
+        />
+    <ToggleButton
+        android:id="@+id/nav_favorites"
+        android:layout_height="match_parent"
+        android:layout_width="wrap_content"
+        android:textOn="@string/strequentList"
+        android:textOff="@string/strequentList"
+        android:layout_toRightOf="@id/nav_contacts"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentBottom="true"
+        android:background="@drawable/btn_nav_bar"
+        android:paddingLeft="15dip"
+        android:paddingRight="15dip"
+        />
+    <ToggleButton
+        android:id="@+id/nav_search"
+        android:layout_height="match_parent"
+        android:layout_width="wrap_content"
+        android:textOff="@string/menu_search"
+        android:textOn="@string/menu_search"
+        android:layout_toRightOf="@id/nav_favorites"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentBottom="true"
+        android:background="@drawable/btn_nav_bar"
+        android:paddingLeft="15dip"
+        android:paddingRight="15dip"
+        />
     <view
         class="com.android.contacts.widget.SearchEditText"
         android:id="@+id/search_src_text"
@@ -28,7 +66,7 @@
         android:layout_width="320dip"
         android:layout_marginLeft="4dip"
         android:layout_marginBottom="0dip"
-        android:layout_alignParentRight="true"
+        android:layout_toRightOf="@id/nav_favorites"
         android:singleLine="true"
         android:ellipsize="end"
         android:inputType="textNoSuggestions"
@@ -38,4 +76,13 @@
         android:freezesText="true"
         android:visibility="gone"
     />
+    <ImageView
+        android:id="@+id/nav_cancel_search"
+        android:layout_height="wrap_content"
+        android:layout_width="wrap_content"
+        android:src="@android:drawable/ic_menu_close_clear_cancel"
+        android:layout_toRightOf="@id/search_src_text"
+        android:layout_centerVertical="true"
+        android:visibility="gone"/>
+    
 </RelativeLayout>
diff --git a/res/layout/two_pane_activity.xml b/res/layout/two_pane_activity.xml
index 9ee01198e..f992ec863 100644
--- a/res/layout/two_pane_activity.xml
+++ b/res/layout/two_pane_activity.xml
@@ -19,16 +19,15 @@
     android:orientation="horizontal"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
-    <fragment android:name="com.android.contacts.list.DefaultContactBrowseListFragment"
-            android:id="@+id/two_pane_list"
-            android:layout_width="0px"
-            android:layout_height="match_parent"
-            android:layout_weight="1" />
+    <FrameLayout 
+        android:id="@+id/two_pane_list"
+        android:layout_width="0px"
+        android:layout_height="match_parent"
+        android:layout_weight="1" />
 
     <!--  Holder for detail- or editor-fragment. -->
     <FrameLayout
         android:id="@+id/two_pane_right_view"
-        android:orientation="horizontal"
         android:layout_width="0px"
         android:layout_height="match_parent"
         android:layout_weight="1" />
diff --git a/res/menu/actions.xml b/res/menu/actions.xml
index a2bf924de..c3cf53bab 100644
--- a/res/menu/actions.xml
+++ b/res/menu/actions.xml
@@ -14,11 +14,6 @@
      limitations under the License.
 -->
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:id="@+id/action_search"
-          android:icon="@android:drawable/ic_menu_search"
-          android:title="@string/menu_search"
-          android:showAsAction="ifRoom"
-          android:onClick="onToggleSearch" />
     <item android:id="@+id/action_share"
           android:icon="@android:drawable/ic_menu_share"
           android:showAsAction="ifRoom" />
diff --git a/src/com/android/contacts/activities/ContactListActivity.java b/src/com/android/contacts/activities/ContactListActivity.java
index 092e5bb84..2cd6f2bff 100644
--- a/src/com/android/contacts/activities/ContactListActivity.java
+++ b/src/com/android/contacts/activities/ContactListActivity.java
@@ -21,6 +21,7 @@ import com.android.contacts.interactions.ContactDeletionInteraction;
 import com.android.contacts.interactions.ImportExportInteraction;
 import com.android.contacts.interactions.PhoneNumberInteraction;
 import com.android.contacts.list.ContactBrowseListContextMenuAdapter;
+import com.android.contacts.list.ContactBrowseListFragment;
 import com.android.contacts.list.ContactEntryListFragment;
 import com.android.contacts.list.ContactsIntentResolver;
 import com.android.contacts.list.ContactsRequest;
@@ -39,7 +40,6 @@ import android.app.Activity;
 import android.app.Dialog;
 import android.app.FragmentTransaction;
 import android.content.ContentValues;
-import android.content.Context;
 import android.content.Intent;
 import android.content.res.Configuration;
 import android.net.Uri;
@@ -54,13 +54,13 @@ import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.Window;
-import android.view.inputmethod.InputMethodManager;
 import android.widget.Toast;
 
 /**
  * Displays a list of contacts.
  */
-public class ContactListActivity extends Activity implements View.OnCreateContextMenuListener {
+public class ContactListActivity extends Activity
+        implements View.OnCreateContextMenuListener, NavigationBar.Listener {
 
     private static final String TAG = "ContactListActivity";
 
@@ -70,10 +70,10 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
     private static final int SUBACTIVITY_SEARCH = 4;
 
     private ContactsIntentResolver mIntentResolver;
-    protected ContactEntryListFragment<?> mListFragment;
+    private ContactBrowseListFragment mListFragment;
 
-    protected PhoneNumberInteraction mPhoneNumberCallInteraction;
-    protected PhoneNumberInteraction mSendTextMessageInteraction;
+    private PhoneNumberInteraction mPhoneNumberCallInteraction;
+    private PhoneNumberInteraction mSendTextMessageInteraction;
     private ContactDeletionInteraction mContactDeletionInteraction;
     private ImportExportInteraction mImportExportInteraction;
 
@@ -83,24 +83,22 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
     private ContactEditorFragment mEditorFragment;
     private EditorFragmentListener mEditorFragmentListener = new EditorFragmentListener();
 
-    private int mActionCode;
-
     private boolean mSearchInitiated;
 
     private ContactsRequest mRequest;
     private SearchEditText mSearchEditText;
 
     private boolean mTwoPaneLayout;
-
-    private View mNavigationBar;
+    private NavigationBar mNavigationBar;
+    private int mMode = -1;
 
     public ContactListActivity() {
         mIntentResolver = new ContactsIntentResolver(this);
     }
 
     @Override
-    protected void onCreate(Bundle icicle) {
-        super.onCreate(icicle);
+    protected void onCreate(Bundle savedState) {
+        super.onCreate(savedState);
 
         // Extract relevant information from the intent
         mRequest = mIntentResolver.resolveIntent(getIntent());
@@ -123,68 +121,16 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         int screenLayoutSize = config.screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
         mTwoPaneLayout = (screenLayoutSize == Configuration.SCREENLAYOUT_SIZE_XLARGE);
         if (mTwoPaneLayout) {
-            configureTwoPaneLayout();
+            configureTwoPaneLayout(savedState);
         } else {
             configureSinglePaneLayout();
         }
     }
 
-    private void configureTwoPaneLayout() {
-        // TODO: set the theme conditionally in AndroidManifest, once that feature is available
-        setTheme(android.R.style.Theme_WithActionBar);
-        requestWindowFeature(Window.FEATURE_ACTION_BAR);
-
-        setContentView(R.layout.two_pane_activity);
-
-        DefaultContactBrowseListFragment fragment =
-                (DefaultContactBrowseListFragment)findFragmentById(R.id.two_pane_list);
-        fragment.setOnContactListActionListener(new ContactBrowserActionListener());
-
-        mListFragment = fragment;
-
-        setupContactDetailFragment();
-
-        mNavigationBar = getLayoutInflater().inflate(R.layout.navigation_bar, null);
-        mSearchEditText = (SearchEditText)mNavigationBar.findViewById(R.id.search_src_text);
-        mSearchEditText.setMaginfyingGlassEnabled(false);
-        mSearchEditText.setText(mRequest.getQueryString());
-        mSearchEditText.setOnFilterTextListener(new OnFilterTextListener() {
-            public void onFilterChange(String queryString) {
-                mListFragment.setSearchMode(!TextUtils.isEmpty(queryString));
-                mListFragment.setQueryString(queryString);
-            }
-
-            public void onCancelSearch() {
-                onToggleSearch(null);
-            }
-        });
-
-        ActionBar actionBar = getActionBar();
-        actionBar.setCustomNavigationMode(mNavigationBar);
-    }
-
-    /**
-     * Toggles search mode.
-     */
-    public void onToggleSearch(MenuItem item) {
-        if (mSearchEditText.getVisibility() == View.VISIBLE) {
-            mSearchEditText.setVisibility(View.GONE);
-            mListFragment.setSearchMode(false);
-        } else {
-            mSearchEditText.setVisibility(View.VISIBLE);
-            mSearchEditText.requestFocus();
-            InputMethodManager inputMethodManager =
-                    (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
-            inputMethodManager.showSoftInput(mSearchEditText, 0);
-        }
-
-        invalidateOptionsMenu();
-    }
-
     private void configureSinglePaneLayout() {
         setTitle(mRequest.getActivityTitle());
 
-        onCreateFragment();
+        mListFragment = createListFragment(mRequest.getActionCode());
 
         int listFragmentContainerId;
         if (mRequest.isSearchMode()) {
@@ -210,6 +156,77 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         transaction.commit();
     }
 
+    private void configureTwoPaneLayout(Bundle savedState) {
+
+        // TODO: set the theme conditionally in AndroidManifest, once that feature is available
+        setTheme(android.R.style.Theme_WithActionBar);
+        requestWindowFeature(Window.FEATURE_ACTION_BAR);
+
+        setContentView(R.layout.two_pane_activity);
+
+        mNavigationBar = new NavigationBar(this);
+        mNavigationBar.onCreate(savedState, mRequest);
+
+        ActionBar actionBar = getActionBar();
+        View navBarView = mNavigationBar.onCreateView(getLayoutInflater());
+        actionBar.setCustomNavigationMode(navBarView);
+
+        configureListFragment();
+
+        setupContactDetailFragment();
+
+        mNavigationBar.setListener(this);
+    }
+
+    @Override
+    public void onNavigationBarChange() {
+        configureListFragment();
+    }
+
+    private void configureListFragment() {
+        int mode = mNavigationBar.getMode();
+        if (mode == NavigationBar.MODE_SEARCH
+                && TextUtils.isEmpty(mNavigationBar.getQueryString())) {
+            mode = mNavigationBar.getDefaultMode();
+        }
+
+        if (mode == mMode) {
+            if (mode == NavigationBar.MODE_SEARCH) {
+                mListFragment.setQueryString(mNavigationBar.getQueryString());
+            }
+            return;
+        }
+
+        if (mListFragment != null) {
+            mListFragment.setOnContactListActionListener(null);
+        }
+
+        mMode = mode;
+        switch (mMode) {
+            case NavigationBar.MODE_CONTACTS: {
+                mListFragment = createListFragment(ContactsRequest.ACTION_DEFAULT);
+                break;
+            }
+            case NavigationBar.MODE_FAVORITES: {
+                int favoritesAction = mRequest.getActionCode();
+                if (favoritesAction == ContactsRequest.ACTION_DEFAULT) {
+                    favoritesAction = ContactsRequest.ACTION_STREQUENT;
+                }
+                mListFragment = createListFragment(favoritesAction);
+                break;
+            }
+            case NavigationBar.MODE_SEARCH: {
+                mListFragment = createContactSearchFragment();
+                mListFragment.setQueryString(mNavigationBar.getQueryString());
+                break;
+            }
+        }
+
+        openFragmentTransaction()
+                .replace(R.id.two_pane_list, mListFragment)
+                .commit();
+    }
+
     private void setupContactDetailFragment() {
         // No editor here
         if (mEditorFragment != null) {
@@ -227,7 +244,6 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         openFragmentTransaction()
                 .replace(R.id.two_pane_right_view, mDetailFragment)
                 .commit();
-
     }
 
     private void setupContactEditorFragment() {
@@ -247,7 +263,6 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         openFragmentTransaction()
                 .replace(R.id.two_pane_right_view, mEditorFragment)
                 .commit();
-
     }
 
     @Override
@@ -259,13 +274,13 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
     }
 
     /**
-     * Creates the fragment based on the current request.
+     * Creates the list fragment for the specified mode.
      */
-    private void onCreateFragment() {
-        mActionCode = mRequest.getActionCode();
-        switch (mActionCode) {
+    private ContactBrowseListFragment createListFragment(int actionCode) {
+        switch (actionCode) {
             case ContactsRequest.ACTION_DEFAULT: {
                 DefaultContactBrowseListFragment fragment = new DefaultContactBrowseListFragment();
+                fragment.setContactsRequest(mRequest);
                 fragment.setOnContactListActionListener(new ContactBrowserActionListener());
                 fragment.setDisplayWithPhonesOnlyOption(mRequest.getDisplayWithPhonesOnlyOption());
                 fragment.setVisibleContactsRestrictionEnabled(mRequest.getDisplayOnlyVisible());
@@ -273,8 +288,8 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
                 fragment.setSearchMode(mRequest.isSearchMode());
                 fragment.setQueryString(mRequest.getQueryString());
                 fragment.setDirectorySearchEnabled(mRequest.isDirectorySearchEnabled());
-                mListFragment = fragment;
-                break;
+                fragment.setAizyEnabled(!mRequest.isSearchMode());
+                return fragment;
             }
 
             case ContactsRequest.ACTION_GROUP: {
@@ -286,8 +301,7 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
                 fragment.setOnContactListActionListener(new ContactBrowserActionListener());
                 fragment.setFrequentlyContactedContactsIncluded(false);
                 fragment.setStarredContactsIncluded(true);
-                mListFragment = fragment;
-                break;
+                return fragment;
             }
 
             case ContactsRequest.ACTION_FREQUENT: {
@@ -295,8 +309,7 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
                 fragment.setOnContactListActionListener(new ContactBrowserActionListener());
                 fragment.setFrequentlyContactedContactsIncluded(true);
                 fragment.setStarredContactsIncluded(false);
-                mListFragment = fragment;
-                break;
+                return fragment;
             }
 
             case ContactsRequest.ACTION_STREQUENT: {
@@ -304,14 +317,24 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
                 fragment.setOnContactListActionListener(new ContactBrowserActionListener());
                 fragment.setFrequentlyContactedContactsIncluded(true);
                 fragment.setStarredContactsIncluded(true);
-                mListFragment = fragment;
-                break;
+                return fragment;
             }
 
             default:
-                throw new IllegalStateException("Invalid action code: " + mActionCode);
+                throw new IllegalStateException("Invalid action code: " + actionCode);
         }
-        mListFragment.setContactsRequest(mRequest);
+    }
+
+    private ContactBrowseListFragment createContactSearchFragment() {
+        DefaultContactBrowseListFragment fragment = new DefaultContactBrowseListFragment();
+        fragment.setOnContactListActionListener(new ContactBrowserActionListener());
+        fragment.setDisplayWithPhonesOnlyOption(ContactsRequest.DISPLAY_ONLY_WITH_PHONES_DISABLED);
+        fragment.setVisibleContactsRestrictionEnabled(true);
+        fragment.setContextMenuAdapter(new ContactBrowseListContextMenuAdapter(fragment));
+        fragment.setSearchMode(true);
+        fragment.setDirectorySearchEnabled(true);
+        fragment.setAizyEnabled(false);
+        return fragment;
     }
 
     private final class ContactBrowserActionListener implements OnContactBrowserActionListener {
@@ -450,8 +473,8 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         if (mTwoPaneLayout) {
             inflater.inflate(R.menu.actions, menu);
             return true;
-        } else if (mActionCode == ContactsRequest.ACTION_DEFAULT ||
-                mActionCode == ContactsRequest.ACTION_STREQUENT) {
+        } else if (mRequest.getActionCode() == ContactsRequest.ACTION_DEFAULT ||
+                mRequest.getActionCode() == ContactsRequest.ACTION_STREQUENT) {
             inflater.inflate(R.menu.list, menu);
             return true;
         } else if (!mListFragment.isSearchMode()) {
@@ -467,14 +490,7 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         MenuItem displayGroups = menu.findItem(R.id.menu_display_groups);
         if (displayGroups != null) {
             displayGroups.setVisible(
-                    mActionCode == ContactsRequest.ACTION_DEFAULT);
-        }
-
-        MenuItem search = menu.findItem(R.id.action_search);
-        if (search != null) {
-            search.setIcon(mSearchEditText.getVisibility() == View.GONE
-                    ? android.R.drawable.ic_menu_search
-                    : android.R.drawable.ic_menu_close_clear_cancel);
+                    mRequest.getActionCode() == ContactsRequest.ACTION_DEFAULT);
         }
         return true;
     }
@@ -622,12 +638,21 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
      */
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
-        if (!mSearchInitiated && !mRequest.isSearchMode()) {
-            int unicodeChar = event.getUnicodeChar();
-            if (unicodeChar != 0) {
-                mSearchInitiated = true;
-                startSearch(new String(new int[]{unicodeChar}, 0, 1), false, null, false);
-                return true;
+        int unicodeChar = event.getUnicodeChar();
+        if (unicodeChar != 0) {
+            String query = new String(new int[]{unicodeChar}, 0, 1);
+            if (mTwoPaneLayout) {
+                if (mNavigationBar.getMode() != NavigationBar.MODE_SEARCH) {
+                    mNavigationBar.setQueryString(query);
+                    mNavigationBar.setMode(NavigationBar.MODE_SEARCH);
+                    return true;
+                }
+            } else if (!mRequest.isSearchMode()) {
+                if (!mSearchInitiated) {
+                    mSearchInitiated = true;
+                    startSearch(query, false, null, false);
+                    return true;
+                }
             }
         }
         return super.dispatchKeyEvent(event);
@@ -670,6 +695,14 @@ public class ContactListActivity extends Activity implements View.OnCreateContex
         return false;
     }
 
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        if (mNavigationBar != null) {
+            mNavigationBar.onSaveInstanceState(outState);
+        }
+    }
+
     private PhoneNumberInteraction getPhoneNumberCallInteraction() {
         if (mPhoneNumberCallInteraction == null) {
             mPhoneNumberCallInteraction = new PhoneNumberInteraction(this, false, null);
diff --git a/src/com/android/contacts/activities/NavigationBar.java b/src/com/android/contacts/activities/NavigationBar.java
new file mode 100644
index 000000000..58b2d35b2
--- /dev/null
+++ b/src/com/android/contacts/activities/NavigationBar.java
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2007 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.contacts.activities;
+
+import com.android.contacts.R;
+import com.android.contacts.list.ContactsRequest;
+import com.android.contacts.widget.SearchEditText;
+import com.android.contacts.widget.SearchEditText.OnFilterTextListener;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.ImageView;
+import android.widget.ToggleButton;
+
+/**
+ * Navigation bar at the top of the Contacts activity.
+ */
+public class NavigationBar implements OnFilterTextListener, OnClickListener {
+
+    public interface Listener {
+        void onNavigationBarChange();
+    }
+
+    private static final String EXTRA_KEY_DEFAULT_MODE = "navBar.defaultMode";
+    private static final String EXTRA_KEY_MODE = "navBar.mode";
+    private static final String EXTRA_KEY_QUERY = "navBar.query";
+
+    public static final int MODE_CONTACTS = 0;
+    public static final int MODE_FAVORITES = 1;
+    public static final int MODE_SEARCH = 2;
+
+    private int mMode = MODE_CONTACTS;
+    private int mDefaultMode = MODE_CONTACTS;
+    private String mQueryString;
+    private SearchEditText mSearchEditText;
+    private View mNavigationBar;
+
+    private final Context mContext;
+
+    private Listener mListener;
+
+    private ToggleButton mContactsButton;
+    private ToggleButton mFavoritesButton;
+    private ToggleButton mSearchButton;
+    private ImageView mCancelSearchButton;
+
+    public NavigationBar(Context context) {
+        mContext = context;
+    }
+
+    public void onCreate(Bundle savedState, ContactsRequest request) {
+        mDefaultMode = -1;
+        mMode = -1;
+        mQueryString = null;
+        if (savedState != null) {
+            mDefaultMode = savedState.getInt(EXTRA_KEY_DEFAULT_MODE, -1);
+            mMode = savedState.getInt(EXTRA_KEY_MODE, -1);
+            mQueryString = savedState.getString(EXTRA_KEY_QUERY);
+        }
+
+        int actionCode = request.getActionCode();
+        if (mDefaultMode == -1) {
+            mDefaultMode = actionCode == ContactsRequest.ACTION_DEFAULT
+                    ? NavigationBar.MODE_CONTACTS
+                    : NavigationBar.MODE_FAVORITES;
+        }
+        if (mMode == -1) {
+            mMode = request.isSearchMode() ? NavigationBar.MODE_SEARCH : mDefaultMode;
+        }
+        if (mQueryString == null) {
+            mQueryString = request.getQueryString();
+        }
+    }
+
+    public void setListener(Listener listener) {
+        mListener = listener;
+    }
+
+    public View onCreateView(LayoutInflater inflater) {
+        mNavigationBar = inflater.inflate(R.layout.navigation_bar, null);
+        mSearchEditText = (SearchEditText)mNavigationBar.findViewById(R.id.search_src_text);
+        mSearchEditText.setMaginfyingGlassEnabled(false);
+        mSearchEditText.setOnFilterTextListener(this);
+        mSearchEditText.setText(mQueryString);
+        mContactsButton = (ToggleButton)mNavigationBar.findViewById(R.id.nav_contacts);
+        mContactsButton.setOnClickListener(this);
+        mFavoritesButton = (ToggleButton)mNavigationBar.findViewById(R.id.nav_favorites);
+        mFavoritesButton.setOnClickListener(this);
+        mSearchButton = (ToggleButton)mNavigationBar.findViewById(R.id.nav_search);
+        mSearchButton.setOnClickListener(this);
+        mCancelSearchButton = (ImageView)mNavigationBar.findViewById(R.id.nav_cancel_search);
+        mCancelSearchButton.setOnClickListener(this);
+        update();
+
+        return mNavigationBar;
+    }
+
+    public int getMode() {
+        return mMode;
+    }
+
+    public void setMode(int mode) {
+        mMode = mode;
+        update();
+        if (mListener != null) {
+            mListener.onNavigationBarChange();
+        }
+    }
+
+    public int getDefaultMode() {
+        return mDefaultMode;
+    }
+
+    public void setDefaultMode(int defaultMode) {
+        mDefaultMode = defaultMode;
+    }
+
+    public String getQueryString() {
+        return mQueryString;
+    }
+
+    public void setQueryString(String query) {
+        mQueryString = query;
+        mSearchEditText.setText(query);
+    }
+
+    public void update() {
+        switch(mMode) {
+            case MODE_CONTACTS:
+                mContactsButton.setChecked(true);
+                mFavoritesButton.setChecked(false);
+                mSearchButton.setChecked(false);
+                mSearchButton.setVisibility(View.VISIBLE);
+                mSearchEditText.setVisibility(View.GONE);
+                mCancelSearchButton.setVisibility(View.GONE);
+                break;
+            case MODE_FAVORITES:
+                mContactsButton.setChecked(false);
+                mFavoritesButton.setChecked(true);
+                mSearchButton.setChecked(false);
+                mSearchButton.setVisibility(View.VISIBLE);
+                mSearchEditText.setVisibility(View.GONE);
+                mCancelSearchButton.setVisibility(View.GONE);
+                break;
+            case MODE_SEARCH:
+                mContactsButton.setChecked(false);
+                mFavoritesButton.setChecked(false);
+                mSearchButton.setVisibility(View.GONE);
+                mSearchEditText.setVisibility(View.VISIBLE);
+                mSearchEditText.requestFocus();
+                InputMethodManager inputMethodManager =
+                    (InputMethodManager)mContext.getSystemService(Context.INPUT_METHOD_SERVICE);
+                inputMethodManager.showSoftInput(mSearchEditText, 0);
+                mCancelSearchButton.setVisibility(View.VISIBLE);
+                break;
+        }
+    }
+
+    public void toggleSearchMode() {
+        setMode(mMode == MODE_SEARCH ? mDefaultMode : MODE_SEARCH);
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view == mSearchButton) {
+            setMode(MODE_SEARCH);
+        } else if (view == mContactsButton) {
+            setMode(MODE_CONTACTS);
+            setDefaultMode(MODE_CONTACTS);
+        } else if (view == mFavoritesButton) {
+            setMode(MODE_FAVORITES);
+            setDefaultMode(MODE_FAVORITES);
+        } else {        // mCancelSearchButton
+            setMode(mDefaultMode);
+        }
+    }
+
+    @Override
+    public void onFilterChange(String queryString) {
+        mQueryString = queryString;
+        if (mListener != null) {
+            mListener.onNavigationBarChange();
+        }
+    }
+
+    @Override
+    public void onCancelSearch() {
+        setMode(mDefaultMode);
+    }
+
+    public void onSaveInstanceState(Bundle outState) {
+        outState.putInt(EXTRA_KEY_DEFAULT_MODE, mDefaultMode);
+        outState.putInt(EXTRA_KEY_MODE, mMode);
+        outState.putString(EXTRA_KEY_QUERY, mQueryString);
+    }
+}