Tuner: Nav bar tuner

Usable edition.

Test: Manual
Change-Id: I20ec31560b89df8ded089974b7da1b60423cdb8b
diff --git a/packages/SystemUI/res/drawable/ic_left.xml b/packages/SystemUI/res/drawable/ic_left.xml
new file mode 100644
index 0000000..cea4cfc
--- /dev/null
+++ b/packages/SystemUI/res/drawable/ic_left.xml
@@ -0,0 +1,24 @@
+<!--
+    Copyright (C) 2017 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M15.41,16.09l-4.58,-4.59 4.58,-4.59L14.0,5.5l-6.0,6.0 6.0,6.0z"/>
+</vector>
diff --git a/packages/SystemUI/res/drawable/ic_menu.xml b/packages/SystemUI/res/drawable/ic_menu.xml
new file mode 100644
index 0000000..994bc5e
--- /dev/null
+++ b/packages/SystemUI/res/drawable/ic_menu.xml
@@ -0,0 +1,24 @@
+<!--
+    Copyright (C) 2017 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M3.0,18.0l18.0,0.0l0.0,-2.0L3.0,16.0l0.0,2.0zm0.0,-5.0l18.0,0.0l0.0,-2.0L3.0,11.0l0.0,2.0zm0.0,-7.0l0.0,2.0l18.0,0.0L21.0,6.0L3.0,6.0z"/>
+</vector>
diff --git a/packages/SystemUI/res/drawable/ic_remove.xml b/packages/SystemUI/res/drawable/ic_remove.xml
new file mode 100644
index 0000000..75b2793
--- /dev/null
+++ b/packages/SystemUI/res/drawable/ic_remove.xml
@@ -0,0 +1,24 @@
+<!--
+    Copyright (C) 2017 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M19.0,13.0L5.0,13.0l0.0,-2.0l14.0,0.0l0.0,2.0z"/>
+</vector>
diff --git a/packages/SystemUI/res/drawable/ic_right.xml b/packages/SystemUI/res/drawable/ic_right.xml
new file mode 100644
index 0000000..35699f73
--- /dev/null
+++ b/packages/SystemUI/res/drawable/ic_right.xml
@@ -0,0 +1,24 @@
+<!--
+    Copyright (C) 2017 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24.0dp"
+        android:height="24.0dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M8.59,16.34l4.58,-4.59 -4.58,-4.59L10.0,5.75l6.0,6.0 -6.0,6.0z"/>
+</vector>
diff --git a/packages/SystemUI/res/values-sw600dp/config.xml b/packages/SystemUI/res/values-sw600dp/config.xml
index fd147cd..63b9d75 100644
--- a/packages/SystemUI/res/values-sw600dp/config.xml
+++ b/packages/SystemUI/res/values-sw600dp/config.xml
@@ -34,7 +34,7 @@
     <bool name="config_keyguardUserSwitcher">true</bool>
 
     <!-- Nav bar button default ordering/layout -->
-    <string name="config_navBarLayout" translatable="false">space;back,home,recent;menu_ime</string>
+    <string name="config_navBarLayout" translatable="false">left;back,home,recent;right</string>
 
     <!-- Animation duration when using long press on recents to dock -->
     <integer name="long_press_dock_anim_duration">290</integer>
diff --git a/packages/SystemUI/res/values-sw900dp/config.xml b/packages/SystemUI/res/values-sw900dp/config.xml
index d8f9ef4..221b013 100644
--- a/packages/SystemUI/res/values-sw900dp/config.xml
+++ b/packages/SystemUI/res/values-sw900dp/config.xml
@@ -19,6 +19,6 @@
 <resources>
 
     <!-- Nav bar button default ordering/layout -->
-    <string name="config_navBarLayout" translatable="false">back,home;space;menu_ime,recent</string>
+    <string name="config_navBarLayout" translatable="false">back,home,left;space;right,recent</string>
 
 </resources>
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index d6ed9d8..b7647cf 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -286,7 +286,7 @@
     <string name="config_systemUIFactoryComponent" translatable="false">com.android.systemui.SystemUIFactory</string>
 
     <!-- Nav bar button default ordering/layout -->
-    <string name="config_navBarLayout" translatable="false">space,back;home;recent,menu_ime</string>
+    <string name="config_navBarLayout" translatable="false">left,back;home;recent,right</string>
 
     <bool name="quick_settings_show_full_alarm">false</bool>
 
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index 422431e..be8b42b 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -1523,56 +1523,71 @@
     <!-- SysUI Tuner: Button that leads to the navigation bar customization screen [CHAR LIMIT=60] -->
     <string name="nav_bar">Navigation bar</string>
 
-    <!-- SysUI Tuner: Group of buttons that show on the start of the screen [CHAR LIMIT=30] -->
-    <string name="start">Start</string>
-    <!-- SysUI Tuner: Group of buttons that show on the center of the screen [CHAR LIMIT=30] -->
-    <string name="center">Center</string>
-    <!-- SysUI Tuner: Group of buttons that show on the end of the screen [CHAR LIMIT=30] -->
-    <string name="end">End</string>
-    <!-- SysUI Tuner: Name of space used in custom navigation bar layouts [CHAR LIMIT=30] -->
-    <string name="space">Spacer</string>
+    <!-- SysUI Tuner: Button that controls layout of navigation bar [CHAR LIMIT=60] -->
+    <string name="nav_bar_layout">Layout</string>
+
+    <!-- SysUI Tuner: Label for section of settings about the left nav button [CHAR LIMIT=60] -->
+    <string name="nav_bar_left">Left</string>
+
+    <!-- SysUI Tuner: Label for section of settings about the right nav button [CHAR LIMIT=60] -->
+    <string name="nav_bar_right">Right</string>
+
+    <!-- SysUI Tuner: Setting for button type in nav bar [CHAR LIMIT=60] -->
+    <string name="nav_bar_button_type">Button type</string>
+
+    <!-- SysUI Tuner: Added to nav bar option to indicate it is the default [CHAR LIMIT=60] -->
+    <string name="nav_bar_default"> (default)</string>
+
+    <!-- SysUI Tuner: Labels for different types of navigation bar buttons [CHAR LIMIT=60] -->
+    <string-array name="nav_bar_buttons">
+        <item>Clipboard</item>
+        <item>Keycode</item>
+        <item>Menu / Keyboard Switcher</item>
+        <item>None</item>
+    </string-array>
+    <string-array name="nav_bar_button_values" translatable="false">
+        <item>clipboard</item>
+        <item>key</item>
+        <item>menu_ime</item>
+        <item>space</item>
+    </string-array>
+
+    <!-- SysUI Tuner: Labels for different types of navigation bar layouts [CHAR LIMIT=60] -->
+    <string-array name="nav_bar_layouts">
+        <item>Divided (default)</item>
+        <item>Centered</item>
+        <item>Left-aligned</item>
+        <item>Right-aligned</item>
+    </string-array>
+
+    <string-array name="nav_bar_layouts_values" translatable="false">
+        <item>default</item>
+        <item>left;back,home,recent;right</item>
+        <item>left,back,home,recent,right;space;space</item>
+        <item>space;space;left,back,home,recent,right</item>
+    </string-array>
+
     <!-- SysUI Tuner: Name of Combination Menu / Keyboard Switcher button [CHAR LIMIT=30] -->
     <string name="menu_ime">Menu / Keyboard Switcher</string>
-    <!-- SysUI Tuner: Title for dialog to add a button [CHAR LIMIT=30] -->
-    <string name="select_button">Select button to add</string>
-    <!-- SysUI Tuner: Button to add a button [CHAR LIMIT=30] -->
-    <string name="add_button">Add button</string>
     <!-- SysUI Tuner: Save the current settings [CHAR LIMIT=30] -->
     <string name="save">Save</string>
     <!-- SysUI Tuner: Reset to default settings [CHAR LIMIT=30] -->
     <string name="reset">Reset</string>
 
-    <!-- SysUI Tuner: Title of no home warning dialog [CHAR LIMIT=30] -->
-    <string name="no_home_title">No home button found</string>
-    <!-- SysUI Tuner: Message of no home warning dialog [CHAR LIMIT=NONE] -->
-    <string name="no_home_message">A home button is required to be able to navigate this device. Please add a home button before saving.</string>
-
     <!-- SysUI Tuner: Adjust button width dialog title [CHAR LIMIT=60] -->
     <string name="adjust_button_width">Adjust button width</string>
 
     <!-- SysUI Tuner: Nav bar button that holds the clipboard [CHAR LIMIT=30] -->
     <string name="clipboard">Clipboard</string>
 
-    <!-- SysUI Tuner: Description of nav bar button that holds the clipboard [CHAR LIMIT=NONE] -->
-    <string name="clipboard_description">The Clipboard allows items to be dragged directly to the clipboard. Items can also be dragged directly out of the clipboard when present.</string>
-
     <!-- SysUI Tuner: Accessibility description for custom nav key [CHAR LIMIT=NONE] -->
     <string name="accessibility_key">Custom navigation button</string>
 
     <!-- SysUI Tuner: Nav bar button that emulates a keycode [CHAR LIMIT=30] -->
     <string name="keycode">Keycode</string>
 
-    <!-- SysUI Tuner: Description of nav bar button that emulates a keycode [CHAR LIMIT=NONE] -->
-    <string name="keycode_description">Keycode buttons allow keyboard keys to
-        be added to the Navigation Bar. When pressed they emulate the selected
-        keyboard key. First the key must be selected for the button, followed
-        by an image to be shown on the button.</string>
-
-    <!-- SysUI Tuner: Title of dialog to select which key to emulate [CHAR LIMIT=60] -->
-    <string name="select_keycode">Select Keyboard Button</string>
-
-    <!-- SysUI Tuner: Label for preview area in navigation bar tuner [CHAR LIMIT=NONE] -->
-    <string name="preview">Preview</string>
+    <!-- SysUI Tuner: Settings to change nav bar icon [CHAR LIMIT=30] -->
+    <string name="icon">Icon</string>
 
     <!-- Label for area where tiles can be dragged out of [CHAR LIMIT=60] -->
     <string name="drag_to_add_tiles">Drag to add tiles</string>
diff --git a/packages/SystemUI/res/xml/nav_bar_tuner.xml b/packages/SystemUI/res/xml/nav_bar_tuner.xml
new file mode 100644
index 0000000..6fa8bec
--- /dev/null
+++ b/packages/SystemUI/res/xml/nav_bar_tuner.xml
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:sysui="http://schemas.android.com/apk/res-auto"
+    android:title="@string/nav_bar">
+
+    <ListPreference
+        android:key="layout"
+        android:title="@string/nav_bar_layout"
+        android:summary="%s"
+        android:persistent="false"
+        android:entries="@array/nav_bar_layouts"
+        android:entryValues="@array/nav_bar_layouts_values" />
+
+    <PreferenceCategory
+        android:key="left"
+        android:title="@string/nav_bar_left">
+
+        <DropDownPreference
+            android:key="type_left"
+            android:title="@string/nav_bar_button_type"
+            android:persistent="false"
+            android:summary="%s"
+            android:entries="@array/nav_bar_buttons"
+            android:entryValues="@array/nav_bar_button_values" />
+
+        <Preference
+            android:key="keycode_left"
+            android:persistent="false"
+            android:title="@string/keycode" />
+
+        <com.android.systemui.tuner.BetterListPreference
+            android:key="icon_left"
+            android:persistent="false"
+            android:summary="%s"
+            android:title="@string/icon" />
+
+    </PreferenceCategory>
+
+    <PreferenceCategory
+        android:key="right"
+        android:title="@string/nav_bar_right">
+
+        <DropDownPreference
+            android:key="type_right"
+            android:title="@string/nav_bar_button_type"
+            android:summary="%s"
+            android:persistent="false"
+            android:entries="@array/nav_bar_buttons"
+            android:entryValues="@array/nav_bar_button_values" />
+
+        <Preference
+            android:key="keycode_right"
+            android:persistent="false"
+            android:title="@string/keycode" />
+
+        <com.android.systemui.tuner.BetterListPreference
+            android:key="icon_right"
+            android:persistent="false"
+            android:summary="%s"
+            android:title="@string/icon" />
+
+    </PreferenceCategory>
+
+</PreferenceScreen>
diff --git a/packages/SystemUI/res/xml/tuner_prefs.xml b/packages/SystemUI/res/xml/tuner_prefs.xml
index 59a10da..3c6315b 100644
--- a/packages/SystemUI/res/xml/tuner_prefs.xml
+++ b/packages/SystemUI/res/xml/tuner_prefs.xml
@@ -150,12 +150,10 @@
 
     </PreferenceScreen>
 
-    <!--
     <Preference
         android:key="nav_bar"
         android:title="@string/nav_bar"
         android:fragment="com.android.systemui.tuner.NavBarTuner" />
-    -->
 
     <Preference
             android:key="other"
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarInflaterView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarInflaterView.java
index f04a9ee..9b4867e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarInflaterView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NavigationBarInflaterView.java
@@ -17,6 +17,7 @@
 import android.annotation.Nullable;
 import android.content.Context;
 import android.content.res.Configuration;
+import android.graphics.drawable.Icon;
 import android.util.AttributeSet;
 import android.util.SparseArray;
 import android.view.Display;
@@ -47,6 +48,8 @@
     private static final String TAG = "NavBarInflater";
 
     public static final String NAV_BAR_VIEWS = "sysui_nav_bar";
+    public static final String NAV_BAR_LEFT = "sysui_nav_bar_left";
+    public static final String NAV_BAR_RIGHT = "sysui_nav_bar_right";
 
     public static final String MENU_IME = "menu_ime";
     public static final String BACK = "back";
@@ -55,6 +58,8 @@
     public static final String NAVSPACE = "space";
     public static final String CLIPBOARD = "clipboard";
     public static final String KEY = "key";
+    public static final String LEFT = "left";
+    public static final String RIGHT = "right";
 
     public static final String GRAVITY_SEPARATOR = ";";
     public static final String BUTTON_SEPARATOR = ",";
@@ -130,7 +135,8 @@
     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
-        TunerService.get(getContext()).addTunable(this, NAV_BAR_VIEWS);
+        TunerService.get(getContext()).addTunable(this, NAV_BAR_VIEWS, NAV_BAR_LEFT,
+                NAV_BAR_RIGHT);
         PluginManager.getInstance(getContext()).addPluginListener(NavBarButtonProvider.ACTION, this,
                 NavBarButtonProvider.VERSION, true /* Allow multiple */);
     }
@@ -148,6 +154,9 @@
                 clearViews();
                 inflateLayout(newValue);
             }
+        } else if (NAV_BAR_LEFT.equals(key) || NAV_BAR_RIGHT.equals(key)) {
+            clearViews();
+            inflateLayout(mCurrentLayout);
         }
     }
 
@@ -268,6 +277,13 @@
             boolean landscape) {
         View v = null;
         String button = extractButton(buttonSpec);
+        if (LEFT.equals(button)) {
+            buttonSpec = TunerService.get(mContext).getValue(NAV_BAR_LEFT, NAVSPACE);
+            button = extractButton(buttonSpec);
+        } else if (RIGHT.equals(button)) {
+            buttonSpec = TunerService.get(mContext).getValue(NAV_BAR_RIGHT, MENU_IME);
+            button = extractButton(buttonSpec);
+        }
         // Let plugins go first so they can override a standard view if they want.
         for (NavBarButtonProvider provider : mPlugins) {
             v = provider.createView(buttonSpec, parent);
@@ -291,7 +307,14 @@
             v = inflater.inflate(R.layout.custom_key, parent, false);
             ((KeyButtonView) v).setCode(code);
             if (uri != null) {
-                ((KeyButtonView) v).loadAsync(uri);
+                if (uri.contains(":")) {
+                    ((KeyButtonView) v).loadAsync(Icon.createWithContentUri(uri));
+                } else if (uri.contains("/")) {
+                    int index = uri.indexOf('/');
+                    String pkg = uri.substring(0, index);
+                    int id = Integer.parseInt(uri.substring(index + 1));
+                    ((KeyButtonView) v).loadAsync(Icon.createWithResource(pkg, id));
+                }
             }
         }
         return v;
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java
index 45cfbdc..882902e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyButtonView.java
@@ -116,18 +116,18 @@
         mOnClickListener = onClickListener;
     }
 
-    public void loadAsync(String uri) {
-        new AsyncTask<String, Void, Drawable>() {
+    public void loadAsync(Icon icon) {
+        new AsyncTask<Icon, Void, Drawable>() {
             @Override
-            protected Drawable doInBackground(String... params) {
-                return Icon.createWithContentUri(params[0]).loadDrawable(mContext);
+            protected Drawable doInBackground(Icon... params) {
+                return params[0].loadDrawable(mContext);
             }
 
             @Override
             protected void onPostExecute(Drawable drawable) {
                 setImageDrawable(drawable);
             }
-        }.execute(uri);
+        }.execute(icon);
     }
 
     @Override
diff --git a/packages/SystemUI/src/com/android/systemui/tuner/BetterListPreference.java b/packages/SystemUI/src/com/android/systemui/tuner/BetterListPreference.java
new file mode 100644
index 0000000..c9c780a
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/tuner/BetterListPreference.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 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.tuner;
+
+import android.content.Context;
+import android.support.v7.preference.ListPreference;
+import android.util.AttributeSet;
+
+public class BetterListPreference extends ListPreference {
+
+    private CharSequence mSummary;
+
+    public BetterListPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    @Override
+    public void setSummary(CharSequence summary) {
+        super.setSummary(summary);
+        mSummary = summary;
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        return mSummary;
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/tuner/NavBarTuner.java b/packages/SystemUI/src/com/android/systemui/tuner/NavBarTuner.java
index ad42459..9593c45 100644
--- a/packages/SystemUI/src/com/android/systemui/tuner/NavBarTuner.java
+++ b/packages/SystemUI/src/com/android/systemui/tuner/NavBarTuner.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016 The Android Open Source Project
+ * Copyright (C) 2017 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
@@ -14,590 +14,227 @@
 
 package com.android.systemui.tuner;
 
-import android.annotation.Nullable;
-import android.app.Activity;
-import android.app.AlertDialog;
-import android.app.Fragment;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.res.ColorStateList;
-import android.content.res.Configuration;
-import android.content.res.TypedArray;
-import android.graphics.Canvas;
-import android.graphics.drawable.Drawable;
-import android.net.Uri;
-import android.os.Bundle;
-import android.provider.Settings;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
-import android.support.v7.widget.helper.ItemTouchHelper;
-import android.util.TypedValue;
-import android.view.Display;
-import android.view.LayoutInflater;
-import android.view.Menu;
-import android.view.MenuInflater;
-import android.view.MenuItem;
-import android.view.MotionEvent;
-import android.view.Surface;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ImageView;
-import android.widget.SeekBar;
-import android.widget.TextView;
-
-import com.android.systemui.R;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.BACK;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.BUTTON_SEPARATOR;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.CLIPBOARD;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.GRAVITY_SEPARATOR;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.HOME;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.KEY;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.KEY_CODE_END;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.KEY_CODE_START;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.KEY_IMAGE_DELIM;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.MENU_IME;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.NAVSPACE;
+import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.NAV_BAR_LEFT;
+import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.NAV_BAR_RIGHT;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.NAV_BAR_VIEWS;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.RECENT;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.SIZE_MOD_END;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.SIZE_MOD_START;
 import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.extractButton;
-import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.extractSize;
+import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.extractImage;
+import static com.android.systemui.statusbar.phone.NavigationBarInflaterView.extractKeycode;
 
-public class NavBarTuner extends Fragment implements TunerService.Tunable {
+import android.annotation.Nullable;
+import android.app.AlertDialog;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.res.Resources;
+import android.graphics.Color;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.Icon;
+import android.os.Bundle;
+import android.os.Handler;
+import android.support.v14.preference.PreferenceFragment;
+import android.support.v7.preference.DropDownPreference;
+import android.support.v7.preference.ListPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.Preference.OnPreferenceChangeListener;
+import android.support.v7.preference.Preference.OnPreferenceClickListener;
+import android.support.v7.preference.PreferenceCategory;
+import android.text.SpannableStringBuilder;
+import android.text.style.ImageSpan;
+import android.util.Log;
+import android.util.TypedValue;
+import android.view.KeyEvent;
+import android.widget.EditText;
 
-    private static final int SAVE = Menu.FIRST + 1;
-    private static final int RESET = Menu.FIRST + 2;
-    private static final int READ_REQUEST = 42;
+import com.android.systemui.R;
+import com.android.systemui.statusbar.phone.NavigationBarInflaterView;
+import com.android.systemui.tuner.TunerService.Tunable;
 
-    private static final float PREVIEW_SCALE = .95f;
-    private static final float PREVIEW_SCALE_LANDSCAPE = .75f;
+import java.util.ArrayList;
 
-    private NavBarAdapter mNavBarAdapter;
-    private PreviewNavInflater mPreview;
+public class NavBarTuner extends PreferenceFragment {
+
+    private static final String LAYOUT = "layout";
+    private static final String LEFT = "left";
+    private static final String RIGHT = "right";
+
+    private static final String TYPE = "type";
+    private static final String KEYCODE = "keycode";
+    private static final String ICON = "icon";
+
+    private static final int[] ICONS = new int[]{
+            R.drawable.ic_qs_circle,
+            R.drawable.ic_add,
+            R.drawable.ic_remove,
+            R.drawable.ic_left,
+            R.drawable.ic_right,
+            R.drawable.ic_menu,
+    };
+
+    private final ArrayList<Tunable> mTunables = new ArrayList<>();
+    private Handler mHandler;
 
     @Override
-    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
-            Bundle savedInstanceState) {
-        final View view = inflater.inflate(R.layout.nav_bar_tuner, container, false);
-        inflatePreview((ViewGroup) view.findViewById(R.id.nav_preview_frame));
-        return view;
-    }
-
-    private void inflatePreview(ViewGroup view) {
-        Display display = getActivity().getWindowManager().getDefaultDisplay();
-        boolean isRotated = display.getRotation() == Surface.ROTATION_90
-                || display.getRotation() == Surface.ROTATION_270;
-
-        Configuration config = new Configuration(getContext().getResources().getConfiguration());
-        boolean isPhoneLandscape = isRotated && (config.smallestScreenWidthDp < 600);
-        final float scale = isPhoneLandscape ? PREVIEW_SCALE_LANDSCAPE : PREVIEW_SCALE;
-        config.densityDpi = (int) (config.densityDpi * scale);
-
-        mPreview = (PreviewNavInflater) LayoutInflater.from(getContext().createConfigurationContext(
-                config)).inflate(R.layout.nav_bar_tuner_inflater, view, false);
-        final ViewGroup.LayoutParams layoutParams = mPreview.getLayoutParams();
-        layoutParams.width = (int) ((isPhoneLandscape ? display.getHeight() : display.getWidth())
-                * scale);
-        // Not sure why, but the height dimen is not being scaled with the dp, set it manually
-        // for now.
-        layoutParams.height = (int) (layoutParams.height * scale);
-        if (isPhoneLandscape) {
-            int width = layoutParams.width;
-            layoutParams.width = layoutParams.height;
-            layoutParams.height = width;
-        }
-        view.addView(mPreview);
-
-        if (isRotated) {
-            mPreview.findViewById(R.id.rot0).setVisibility(View.GONE);
-            final View rot90 = mPreview.findViewById(R.id.rot90);
-        } else {
-            mPreview.findViewById(R.id.rot90).setVisibility(View.GONE);
-            final View rot0 = mPreview.findViewById(R.id.rot0);
-        }
-    }
-
-    private void notifyChanged() {
-        mPreview.onTuningChanged(NAV_BAR_VIEWS, mNavBarAdapter.getNavString());
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        mHandler = new Handler();
+        super.onCreate(savedInstanceState);
     }
 
     @Override
-    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-        RecyclerView recyclerView = (RecyclerView) view.findViewById(android.R.id.list);
-        final Context context = getContext();
-        recyclerView.setLayoutManager(new LinearLayoutManager(context));
-        mNavBarAdapter = new NavBarAdapter(context);
-        recyclerView.setAdapter(mNavBarAdapter);
-        recyclerView.addItemDecoration(new Dividers(context));
-        final ItemTouchHelper itemTouchHelper = new ItemTouchHelper(mNavBarAdapter.mCallbacks);
-        mNavBarAdapter.setTouchHelper(itemTouchHelper);
-        itemTouchHelper.attachToRecyclerView(recyclerView);
-
-        TunerService.get(getContext()).addTunable(this, NAV_BAR_VIEWS);
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);
     }
 
     @Override
-    public void onDestroyView() {
-        super.onDestroyView();
-        TunerService.get(getContext()).removeTunable(this);
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        addPreferencesFromResource(R.xml.nav_bar_tuner);
+        bindLayout((ListPreference) findPreference(LAYOUT));
+        bindButton((PreferenceCategory) findPreference(LEFT),
+                NAV_BAR_LEFT, NAVSPACE);
+        bindButton((PreferenceCategory) findPreference(RIGHT),
+                NAV_BAR_RIGHT, MENU_IME);
     }
 
     @Override
-    public void onTuningChanged(String key, String navLayout) {
-        if (!NAV_BAR_VIEWS.equals(key)) return;
-        Context context = getContext();
-        if (navLayout == null) {
-            navLayout = context.getString(R.string.config_navBarLayout);
-        }
-        String[] views = navLayout.split(GRAVITY_SEPARATOR);
-        String[] groups = new String[] { NavBarAdapter.START, NavBarAdapter.CENTER,
-                NavBarAdapter.END};
-        CharSequence[] groupLabels = new String[] { getString(R.string.start),
-                getString(R.string.center), getString(R.string.end) };
-        mNavBarAdapter.clear();
-        for (int i = 0; i < 3; i++) {
-            mNavBarAdapter.addButton(groups[i], groupLabels[i]);
-            for (String button : views[i].split(BUTTON_SEPARATOR)) {
-                mNavBarAdapter.addButton(button, getLabel(button, context));
+    public void onDestroy() {
+        super.onDestroy();
+        mTunables.forEach(t -> TunerService.get(getContext()).removeTunable(t));
+    }
+
+    private void addTunable(Tunable tunable, String... keys) {
+        mTunables.add(tunable);
+        TunerService.get(getContext()).addTunable(tunable, keys);
+    }
+
+    private void bindLayout(ListPreference preference) {
+        addTunable((key, newValue) -> mHandler.post(() -> {
+            String val = newValue;
+            if (val == null) {
+                val = "default";
             }
-        }
-        mNavBarAdapter.addButton(NavBarAdapter.ADD, getString(R.string.add_button));
-        setHasOptionsMenu(true);
+            preference.setValue(val);
+        }), NAV_BAR_VIEWS);
+        preference.setOnPreferenceChangeListener((preference1, newValue) -> {
+            String val = (String) newValue;
+            if ("default".equals(val)) val = null;
+            TunerService.get(getContext()).setValue(NAV_BAR_VIEWS, val);
+            return true;
+        });
     }
 
-    @Override
-    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
-        super.onCreateOptionsMenu(menu, inflater);
-        // TODO: Show save button conditionally, only when there are changes.
-        menu.add(Menu.NONE, SAVE, Menu.NONE, getString(R.string.save))
-                .setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
-        menu.add(Menu.NONE, RESET, Menu.NONE, getString(R.string.reset));
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        if (item.getItemId() == SAVE) {
-            if (!mNavBarAdapter.hasHomeButton()) {
-                new AlertDialog.Builder(getContext())
-                        .setTitle(R.string.no_home_title)
-                        .setMessage(R.string.no_home_message)
-                        .setPositiveButton(android.R.string.ok, null)
-                        .show();
+    private void bindButton(PreferenceCategory parent, String setting, String def) {
+        String k = parent.getKey();
+        DropDownPreference type = (DropDownPreference) findPreference(TYPE + "_" + k);
+        Preference keycode = findPreference(KEYCODE + "_" + k);
+        ListPreference icon = (ListPreference) findPreference(ICON + "_" + k);
+        setupIcons(icon);
+        addTunable((key, newValue) -> mHandler.post(() -> {
+            String val = newValue;
+            if (val == null) {
+                val = def;
+            }
+            String button = extractButton(val);
+            if (button.startsWith(KEY)) {
+                type.setValue(KEY);
+                String uri = extractImage(button);
+                int code = extractKeycode(button);
+                icon.setValue(uri);
+                updateSummary(icon);
+                keycode.setSummary(code + "");
+                keycode.setVisible(true);
+                icon.setVisible(true);
             } else {
-                Settings.Secure.putString(getContext().getContentResolver(),
-                        NAV_BAR_VIEWS, mNavBarAdapter.getNavString());
+                type.setValue(button);
+                keycode.setVisible(false);
+                icon.setVisible(false);
             }
-            return true;
-        } else if (item.getItemId() == RESET) {
-            Settings.Secure.putString(getContext().getContentResolver(),
-                    NAV_BAR_VIEWS, null);
-            return true;
-        }
-        return super.onOptionsItemSelected(item);
-    }
-
-    private static CharSequence getLabel(String button, Context context) {
-        if (button.startsWith(HOME)) {
-            return context.getString(R.string.accessibility_home);
-        } else if (button.startsWith(BACK)) {
-            return context.getString(R.string.accessibility_back);
-        } else if (button.startsWith(RECENT)) {
-            return context.getString(R.string.accessibility_recent);
-        } else if (button.startsWith(NAVSPACE)) {
-            return context.getString(R.string.space);
-        } else if (button.startsWith(MENU_IME)) {
-            return context.getString(R.string.menu_ime);
-        } else if (button.startsWith(CLIPBOARD)) {
-            return context.getString(R.string.clipboard);
-        } else if (button.startsWith(KEY)) {
-            return context.getString(R.string.keycode);
-        }
-        return button;
-    }
-
-    private static class Holder extends RecyclerView.ViewHolder {
-        private TextView title;
-
-        public Holder(View itemView) {
-            super(itemView);
-            title = (TextView) itemView.findViewById(android.R.id.title);
-        }
-    }
-
-    private static class Dividers extends RecyclerView.ItemDecoration {
-        private final Drawable mDivider;
-
-        public Dividers(Context context) {
-            TypedValue value = new TypedValue();
-            context.getTheme().resolveAttribute(android.R.attr.listDivider, value, true);
-            mDivider = context.getDrawable(value.resourceId);
-        }
-
-        @Override
-        public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
-            super.onDraw(c, parent, state);
-            final int left = parent.getPaddingLeft();
-            final int right = parent.getWidth() - parent.getPaddingRight();
-
-            final int childCount = parent.getChildCount();
-            for (int i = 0; i < childCount; i++) {
-                final View child = parent.getChildAt(i);
-                final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
-                        .getLayoutParams();
-                final int top = child.getBottom() + params.bottomMargin;
-                final int bottom = top + mDivider.getIntrinsicHeight();
-                mDivider.setBounds(left, top, right, bottom);
-                mDivider.draw(c);
-            }
-        }
-    }
-
-    private void selectImage() {
-        startActivityForResult(KeycodeSelectionHelper.getSelectImageIntent(), READ_REQUEST);
-    }
-
-    @Override
-    public void onActivityResult(int requestCode, int resultCode, Intent data) {
-        if (requestCode == READ_REQUEST && resultCode == Activity.RESULT_OK && data != null) {
-            final Uri uri = data.getData();
-            final int takeFlags = data.getFlags() & (Intent.FLAG_GRANT_READ_URI_PERMISSION);
-            getContext().getContentResolver().takePersistableUriPermission(uri, takeFlags);
-            mNavBarAdapter.onImageSelected(uri);
-        } else {
-            super.onActivityResult(requestCode, resultCode, data);
-        }
-    }
-
-    private class NavBarAdapter extends RecyclerView.Adapter<Holder>
-            implements View.OnClickListener {
-
-        private static final String START = "start";
-        private static final String CENTER = "center";
-        private static final String END = "end";
-        private static final String ADD = "add";
-
-        private static final int ADD_ID = 0;
-        private static final int BUTTON_ID = 1;
-        private static final int CATEGORY_ID = 2;
-
-        private List<String> mButtons = new ArrayList<>();
-        private List<CharSequence> mLabels = new ArrayList<>();
-        private int mCategoryLayout;
-        private int mButtonLayout;
-        private ItemTouchHelper mTouchHelper;
-
-        // Stored keycode while we wait for image selection on a KEY.
-        private int mKeycode;
-
-        public NavBarAdapter(Context context) {
-            TypedArray attrs = context.getTheme().obtainStyledAttributes(null,
-                    android.R.styleable.Preference, android.R.attr.preferenceStyle, 0);
-            mButtonLayout = attrs.getResourceId(android.R.styleable.Preference_layout, 0);
-            attrs = context.getTheme().obtainStyledAttributes(null,
-                    android.R.styleable.Preference, android.R.attr.preferenceCategoryStyle, 0);
-            mCategoryLayout = attrs.getResourceId(android.R.styleable.Preference_layout, 0);
-        }
-
-        public void setTouchHelper(ItemTouchHelper itemTouchHelper) {
-            mTouchHelper = itemTouchHelper;
-        }
-
-        public void clear() {
-            mButtons.clear();
-            mLabels.clear();
-            notifyDataSetChanged();
-        }
-
-        public void addButton(String button, CharSequence label) {
-            mButtons.add(button);
-            mLabels.add(label);
-            notifyItemInserted(mLabels.size() - 1);
-            notifyChanged();
-        }
-
-        public boolean hasHomeButton() {
-            final int N = mButtons.size();
-            for (int i = 0; i < N; i++) {
-                if (mButtons.get(i).startsWith(HOME)) {
-                    return true;
-                }
-            }
-            return false;
-        }
-
-        public String getNavString() {
-            StringBuilder builder = new StringBuilder();
-            for (int i = 1; i < mButtons.size() - 1; i++) {
-                String button = mButtons.get(i);
-                if (button.equals(CENTER) || button.equals(END)) {
-                    if (builder.length() == 0 || builder.toString().endsWith(GRAVITY_SEPARATOR)) {
-                        // No start or center buttons, fill with a space.
-                        builder.append(NAVSPACE);
-                    }
-                    builder.append(GRAVITY_SEPARATOR);
-                    continue;
-                } else if (builder.length() != 0 && !builder.toString().endsWith(
-                        GRAVITY_SEPARATOR)) {
-                    builder.append(BUTTON_SEPARATOR);
-                }
-                builder.append(button);
-            }
-            if (builder.toString().endsWith(GRAVITY_SEPARATOR)) {
-                // No end buttons, fill with space.
-                builder.append(NAVSPACE);
-            }
-            return builder.toString();
-        }
-
-        @Override
-        public int getItemViewType(int position) {
-            String button = mButtons.get(position);
-            if (button.equals(START) || button.equals(CENTER) || button.equals(END)) {
-                return CATEGORY_ID;
-            }
-            if (button.equals(ADD)) {
-                return ADD_ID;
-            }
-            return BUTTON_ID;
-        }
-
-        @Override
-        public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
-            final Context context = parent.getContext();
-            final LayoutInflater inflater = LayoutInflater.from(context);
-            final View view = inflater.inflate(getLayoutId(viewType), parent, false);
-            if (viewType == BUTTON_ID) {
-                inflater.inflate(R.layout.nav_control_widget,
-                        (ViewGroup) view.findViewById(android.R.id.widget_frame));
-            }
-            return new Holder(view);
-        }
-
-        private int getLayoutId(int viewType) {
-            if (viewType == CATEGORY_ID) {
-                return mCategoryLayout;
-            }
-            return mButtonLayout;
-        }
-
-        @Override
-        public void onBindViewHolder(Holder holder, int position) {
-            holder.title.setText(mLabels.get(position));
-            if (holder.getItemViewType() == BUTTON_ID) {
-                bindButton(holder, position);
-            } else if (holder.getItemViewType() == ADD_ID) {
-                bindAdd(holder);
-            }
-        }
-
-        private void bindAdd(Holder holder) {
-            TypedValue value = new TypedValue();
-            final Context context = holder.itemView.getContext();
-            context.getTheme().resolveAttribute(android.R.attr.colorAccent, value, true);
-            final ImageView icon = (ImageView) holder.itemView.findViewById(android.R.id.icon);
-            icon.setImageResource(R.drawable.ic_add);
-            icon.setImageTintList(ColorStateList.valueOf(context.getColor(value.resourceId)));
-            holder.itemView.findViewById(android.R.id.summary).setVisibility(View.GONE);
-            holder.itemView.setClickable(true);
-            holder.itemView.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    showAddDialog(v.getContext());
-                }
+        }), setting);
+        OnPreferenceChangeListener listener = (preference, newValue) -> {
+            mHandler.post(() -> {
+                setValue(setting, type, keycode, icon);
+                updateSummary(icon);
             });
-        }
-
-        private void bindButton(final Holder holder, int position) {
-            holder.itemView.findViewById(android.R.id.icon_frame).setVisibility(View.GONE);
-            holder.itemView.findViewById(android.R.id.summary).setVisibility(View.GONE);
-            bindClick(holder.itemView.findViewById(R.id.close), holder);
-            bindClick(holder.itemView.findViewById(R.id.width), holder);
-            holder.itemView.findViewById(R.id.drag).setOnTouchListener(new View.OnTouchListener() {
-                @Override
-                public boolean onTouch(View v, MotionEvent event) {
-                    mTouchHelper.startDrag(holder);
-                    return true;
-                }
-            });
-        }
-
-        private void showAddDialog(final Context context) {
-            final String[] options = new String[] {
-                    BACK, HOME, RECENT, MENU_IME, NAVSPACE, CLIPBOARD, KEY,
-            };
-            final CharSequence[] labels = new CharSequence[options.length];
-            for (int i = 0; i < options.length; i++) {
-                labels[i] = getLabel(options[i], context);
-            }
-            new AlertDialog.Builder(context)
-                    .setTitle(R.string.select_button)
-                    .setItems(labels, new DialogInterface.OnClickListener() {
-                        @Override
-                        public void onClick(DialogInterface dialog, int which) {
-                            if (KEY.equals(options[which])) {
-                                showKeyDialogs(context);
-                            } else {
-                                int index = mButtons.size() - 1;
-                                showAddedMessage(context, options[which]);
-                                mButtons.add(index, options[which]);
-                                mLabels.add(index, labels[which]);
-
-                                notifyItemInserted(index);
-                                notifyChanged();
-                            }
-                        }
-                    }).setNegativeButton(android.R.string.cancel, null)
-                    .show();
-        }
-
-        private void onImageSelected(Uri uri) {
-            int index = mButtons.size() - 1;
-            mButtons.add(index, KEY + KEY_CODE_START + mKeycode + KEY_IMAGE_DELIM + uri.toString()
-                    + KEY_CODE_END);
-            mLabels.add(index, getLabel(KEY, getContext()));
-
-            notifyItemInserted(index);
-            notifyChanged();
-        }
-
-        private void showKeyDialogs(final Context context) {
-            final KeycodeSelectionHelper.OnSelectionComplete listener =
-                    new KeycodeSelectionHelper.OnSelectionComplete() {
-                        @Override
-                        public void onSelectionComplete(int code) {
-                            mKeycode = code;
-                            selectImage();
-                        }
-                    };
-            new AlertDialog.Builder(context)
-                    .setTitle(R.string.keycode)
-                    .setMessage(R.string.keycode_description)
-                    .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
-                        @Override
-                        public void onClick(DialogInterface dialog, int which) {
-                            KeycodeSelectionHelper.showKeycodeSelect(context, listener);
-                        }
-                    }).show();
-        }
-
-        private void showAddedMessage(Context context, String button) {
-            if (CLIPBOARD.equals(button)) {
-                new AlertDialog.Builder(context)
-                        .setTitle(R.string.clipboard)
-                        .setMessage(R.string.clipboard_description)
-                        .setPositiveButton(android.R.string.ok, null)
-                        .show();
-            }
-        }
-
-        private void bindClick(View view, Holder holder) {
-            view.setOnClickListener(this);
-            view.setTag(holder);
-        }
-
-        @Override
-        public void onClick(View v) {
-            Holder holder = (Holder) v.getTag();
-            if (v.getId() == R.id.width) {
-                showWidthDialog(holder, v.getContext());
-            } else if (v.getId() == R.id.close) {
-                int position = holder.getAdapterPosition();
-                mButtons.remove(position);
-                mLabels.remove(position);
-                notifyItemRemoved(position);
-                notifyChanged();
-            }
-        }
-
-        private void showWidthDialog(final Holder holder, Context context) {
-            final String buttonSpec = mButtons.get(holder.getAdapterPosition());
-            float amount = extractSize(buttonSpec);
-            final AlertDialog dialog = new AlertDialog.Builder(context)
-                    .setTitle(R.string.adjust_button_width)
-                    .setView(R.layout.nav_width_view)
-                    .setNegativeButton(android.R.string.cancel, null).create();
-            dialog.setButton(DialogInterface.BUTTON_POSITIVE,
-                    context.getString(android.R.string.ok),
-                    new DialogInterface.OnClickListener() {
-                        @Override
-                        public void onClick(DialogInterface d, int which) {
-                            final String button = extractButton(buttonSpec);
-                            SeekBar seekBar = (SeekBar) dialog.findViewById(R.id.seekbar);
-                            if (seekBar.getProgress() == 75) {
-                                mButtons.set(holder.getAdapterPosition(), button);
-                            } else {
-                                float amount = (seekBar.getProgress() + 25) / 100f;
-                                mButtons.set(holder.getAdapterPosition(), button
-                                        + SIZE_MOD_START + amount + SIZE_MOD_END);
-                            }
-                            notifyChanged();
-                        }
-                    });
-            dialog.show();
-            SeekBar seekBar = (SeekBar) dialog.findViewById(R.id.seekbar);
-            // Range is .25 - 1.75.
-            seekBar.setMax(150);
-            seekBar.setProgress((int) ((amount - .25f) * 100));
-        }
-
-        @Override
-        public int getItemCount() {
-            return mButtons.size();
-        }
-
-        private final ItemTouchHelper.Callback mCallbacks = new ItemTouchHelper.Callback() {
-            @Override
-            public boolean isLongPressDragEnabled() {
-                return false;
-            }
-
-            @Override
-            public boolean isItemViewSwipeEnabled() {
-                return false;
-            }
-
-            @Override
-            public int getMovementFlags(RecyclerView recyclerView,
-                    RecyclerView.ViewHolder viewHolder) {
-                if (viewHolder.getItemViewType() != BUTTON_ID) {
-                    return makeMovementFlags(0, 0);
-                }
-                int dragFlags = ItemTouchHelper.UP | ItemTouchHelper.DOWN;
-                return makeMovementFlags(dragFlags, 0);
-            }
-
-            @Override
-            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder,
-                    RecyclerView.ViewHolder target) {
-                int from = viewHolder.getAdapterPosition();
-                int to = target.getAdapterPosition();
-                if (to == 0) {
-                    // Can't go above the top.
-                    return false;
-                }
-                move(from, to, mButtons);
-                move(from, to, mLabels);
-                notifyChanged();
-                notifyItemMoved(from, to);
-                return true;
-            }
-
-            private <T> void move(int from, int to, List<T> list) {
-                list.add(from > to ? to : to + 1, list.get(from));
-                list.remove(from > to ? from + 1 : from);
-            }
-
-            @Override
-            public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
-                // Don't care.
-            }
+            return true;
         };
+        type.setOnPreferenceChangeListener(listener);
+        icon.setOnPreferenceChangeListener(listener);
+        keycode.setOnPreferenceClickListener(preference -> {
+            EditText editText = new EditText(getContext());
+            new AlertDialog.Builder(getContext())
+                    .setTitle(preference.getTitle())
+                    .setView(editText)
+                    .setNegativeButton(android.R.string.cancel, null)
+                    .setPositiveButton(android.R.string.ok, (dialog, which) -> {
+                        int code = KeyEvent.KEYCODE_ENTER;
+                        try {
+                            code = Integer.parseInt(editText.getText().toString());
+                        } catch (Exception e) {
+                        }
+                        keycode.setSummary(code + "");
+                        setValue(setting, type, keycode, icon);
+                    }).show();
+            return true;
+        });
+    }
+
+    private void updateSummary(ListPreference icon) {
+        try {
+            int size = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 14,
+                    getContext().getResources().getDisplayMetrics());
+            String pkg = icon.getValue().split("/")[0];
+            int id = Integer.parseInt(icon.getValue().split("/")[1]);
+            SpannableStringBuilder builder = new SpannableStringBuilder();
+            Drawable d = Icon.createWithResource(pkg, id)
+                    .loadDrawable(getContext());
+            d.setTint(Color.BLACK);
+            d.setBounds(0, 0, size, size);
+            ImageSpan span = new ImageSpan(d);
+            builder.append("  ", span, 0);
+            icon.setSummary(builder);
+        } catch (Exception e) {
+            Log.d("NavButton", "Problem with summary", e);
+            icon.setSummary(null);
+        }
+    }
+
+    private void setValue(String setting, DropDownPreference type, Preference keycode,
+            ListPreference icon) {
+        String button = type.getValue();
+        if (KEY.equals(button)) {
+            String uri = icon.getValue();
+            int code = KeyEvent.KEYCODE_ENTER;
+            try {
+                code = Integer.parseInt(keycode.getSummary().toString());
+            } catch (Exception e) {
+            }
+            button = button + KEY_CODE_START + code + KEY_IMAGE_DELIM + uri + KEY_CODE_END;
+        }
+        TunerService.get(getContext()).setValue(setting, button);
+    }
+
+    private void setupIcons(ListPreference icon) {
+        CharSequence[] labels = new CharSequence[ICONS.length];
+        CharSequence[] values = new CharSequence[ICONS.length];
+        int size = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 14,
+                getContext().getResources().getDisplayMetrics());
+        for (int i = 0; i < ICONS.length; i++) {
+            SpannableStringBuilder builder = new SpannableStringBuilder();
+            Drawable d = Icon.createWithResource(getContext().getPackageName(), ICONS[i])
+                    .loadDrawable(getContext());
+            d.setTint(Color.BLACK);
+            d.setBounds(0, 0, size, size);
+            ImageSpan span = new ImageSpan(d);
+            builder.append("  ", span, 0);
+            labels[i] = builder;
+            values[i] = getContext().getPackageName() + "/" + ICONS[i];
+        }
+        icon.setEntries(labels);
+        icon.setEntryValues(values);
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/tuner/TunerService.java b/packages/SystemUI/src/com/android/systemui/tuner/TunerService.java
index 565ac08..fb94061 100644
--- a/packages/SystemUI/src/com/android/systemui/tuner/TunerService.java
+++ b/packages/SystemUI/src/com/android/systemui/tuner/TunerService.java
@@ -33,6 +33,7 @@
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings;
+import android.provider.Settings.Secure;
 import android.text.TextUtils;
 import android.util.ArrayMap;
 import android.util.ArraySet;
@@ -126,6 +127,12 @@
         return Settings.Secure.getIntForUser(mContentResolver, setting, def, mCurrentUser);
     }
 
+    public String getValue(String setting, String def) {
+        String ret = Secure.getStringForUser(mContentResolver, setting, mCurrentUser);
+        if (ret == null) return def;
+        return ret;
+    }
+
     public void setValue(String setting, int value) {
          Settings.Secure.putIntForUser(mContentResolver, setting, value, mCurrentUser);
     }