From 227affaf29a55ed874e90eb2cdfb849080e4bd68 Mon Sep 17 00:00:00 2001
From: Evan Laird <evanlaird@google.com>
Date: Wed, 22 Mar 2017 11:36:18 -0400
Subject: [PATCH] Cleanup to screensaver settings for O

Reworked the way screensaver settings are laid out for O. Instead of
using the options menu and dialogs to navigate screensaver options,
there are now two rows: one row for the screensaver choice and
optionally its own settings, and one row for the "when to show" setting.
And now there's a nice obvious button you can press to preview your
choices.

Test: 'export ROBOTEST_FILTER="RadioButtonListFragmentTest";\
mmm -j20 packages/apps/Settings/tests/robotests'

Bug: 35031991
Change-Id: Ie7d2055fb45f6dfe72e34cb9598d9a25f7bee75a
---
 res/layout/dream_info_row.xml                 |  94 -----
 res/layout/dream_start_button.xml             |  38 ++
 res/values/arrays.xml                         |  14 +
 res/values/styles.xml                         |   2 +
 res/xml/display_settings.xml                  |   2 +-
 res/xml/dream_fragment_overview.xml           |  41 ++
 src/com/android/settings/DreamSettings.java   | 364 ------------------
 .../core/gateway/SettingsGateway.java         |   2 +-
 .../ScreenSaverPreferenceController.java      |   2 +-
 .../settings/dream/CurrentDreamPicker.java    | 117 ++++++
 .../CurrentDreamPreferenceController.java     |  79 ++++
 .../android/settings/dream/DreamSettings.java | 147 +++++++
 .../dream/StartNowPreferenceController.java   |  66 ++++
 .../settings/dream/WhenToDreamPicker.java     | 115 ++++++
 .../WhenToDreamPreferenceController.java      |  52 +++
 .../search/SearchIndexableResources.java      |   2 +
 .../dream/CurrentDreamPickerTest.java         |  91 +++++
 .../CurrentDreamPreferenceControllerTest.java | 111 ++++++
 .../settings/dream/DreamSettingsTest.java     | 113 ++++++
 .../StartNowPreferenceControllerTest.java     |  94 +++++
 .../settings/dream/WhenToDreamPickerTest.java | 108 ++++++
 .../WhenToDreamPreferenceControllerTest.java  |  70 ++++
 22 files changed, 1263 insertions(+), 461 deletions(-)
 delete mode 100644 res/layout/dream_info_row.xml
 create mode 100644 res/layout/dream_start_button.xml
 create mode 100644 res/xml/dream_fragment_overview.xml
 delete mode 100644 src/com/android/settings/DreamSettings.java
 create mode 100644 src/com/android/settings/dream/CurrentDreamPicker.java
 create mode 100644 src/com/android/settings/dream/CurrentDreamPreferenceController.java
 create mode 100644 src/com/android/settings/dream/DreamSettings.java
 create mode 100644 src/com/android/settings/dream/StartNowPreferenceController.java
 create mode 100644 src/com/android/settings/dream/WhenToDreamPicker.java
 create mode 100644 src/com/android/settings/dream/WhenToDreamPreferenceController.java
 create mode 100644 tests/robotests/src/com/android/settings/dream/CurrentDreamPickerTest.java
 create mode 100644 tests/robotests/src/com/android/settings/dream/CurrentDreamPreferenceControllerTest.java
 create mode 100644 tests/robotests/src/com/android/settings/dream/DreamSettingsTest.java
 create mode 100644 tests/robotests/src/com/android/settings/dream/StartNowPreferenceControllerTest.java
 create mode 100644 tests/robotests/src/com/android/settings/dream/WhenToDreamPickerTest.java
 create mode 100644 tests/robotests/src/com/android/settings/dream/WhenToDreamPreferenceControllerTest.java

diff --git a/res/layout/dream_info_row.xml b/res/layout/dream_info_row.xml
deleted file mode 100644
index fd70ad543ff..00000000000
--- a/res/layout/dream_info_row.xml
+++ /dev/null
@@ -1,94 +0,0 @@
-<!--
-     Copyright (C) 2012 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.
--->
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
-    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
-    android:clickable="true"
-    android:focusable="true"
-    android:orientation="horizontal"
-    android:background="?android:attr/selectableItemBackground" >
-
-    <!-- Dream icon -->
-
-    <ImageView
-        android:id="@android:id/icon"
-        android:layout_width="@android:dimen/app_icon_size"
-        android:layout_height="@android:dimen/app_icon_size"
-        android:layout_centerVertical="true"
-        android:layout_marginBottom="10dp"
-        android:layout_marginStart="0dp"
-        android:layout_marginEnd="6dp"
-        android:layout_marginTop="10dp"
-        android:contentDescription="@null"
-        android:maxHeight="@android:dimen/app_icon_size"
-        android:maxWidth="@android:dimen/app_icon_size"
-        android:scaleType="fitCenter" />
-
-    <!-- Dream caption -->
-
-    <TextView
-        android:id="@android:id/title"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_weight="1"
-        android:layout_centerVertical="true"
-        android:ellipsize="end"
-        android:singleLine="true"
-        android:gravity="center_vertical"
-        android:textAppearance="?android:attr/textAppearanceMedium"
-        android:textAlignment="viewStart"
-        android:labelFor="@android:id/button2" />
-
-    <!-- Dream radio button -->
-
-    <RadioButton
-        android:id="@android:id/button1"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_alignParentEnd="true"
-        android:layout_centerVertical="true"
-        android:duplicateParentState="true"
-        android:clickable="false"
-        android:focusable="false" />
-
-    <!-- Divider -->
-
-    <ImageView
-        android:id="@+id/divider"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_centerVertical="true"
-        android:contentDescription="@null"
-        android:src="@drawable/nav_divider" />
-
-    <!-- Settings icon -->
-
-    <ImageView
-        android:id="@android:id/button2"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_centerVertical="true"
-        android:layout_margin="0dip"
-        android:background="?android:attr/selectableItemBackground"
-        android:contentDescription="@string/screensaver_settings_button"
-        android:padding="8dip"
-        android:clickable="true"
-        android:focusable="true"
-        android:src="@drawable/ic_settings" />
-
-</LinearLayout>
diff --git a/res/layout/dream_start_button.xml b/res/layout/dream_start_button.xml
new file mode 100644
index 00000000000..7d5e0c92618
--- /dev/null
+++ b/res/layout/dream_start_button.xml
@@ -0,0 +1,38 @@
+<?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.
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
+    android:gravity="bottom"
+    android:paddingTop="4dp"
+    android:paddingStart="72dp"
+    android:paddingEnd="72dp"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <Button
+        android:id="@+id/dream_start_now_button"
+        style="@style/DreamStartButton"
+        android:layout_width="0dp"
+        android:layout_weight="1"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:text="@string/screensaver_settings_dream_start"
+        android:paddingEnd="8dp" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/res/values/arrays.xml b/res/values/arrays.xml
index 873576c7041..5e7442bf481 100644
--- a/res/values/arrays.xml
+++ b/res/values/arrays.xml
@@ -1056,4 +1056,18 @@
         <item>90</item>
     </string-array>
 
+    <string-array name="when_to_start_screensaver_entries" translatable="false">
+        <item>@string/screensaver_settings_summary_sleep</item>
+        <item>@string/screensaver_settings_summary_dock</item>
+        <item>@string/screensaver_settings_summary_either_long</item>
+        <item>@string/screensaver_settings_summary_never</item>
+    </string-array>
+
+    <string-array name="when_to_start_screensaver_values" translatable="false">
+        <item>while_charging_only</item>
+        <item>while_docked_only</item>
+        <item>either_charging_or_docked</item>
+        <item>never</item>
+    </string-array>
+
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index bae36b3a397..0780e82d8c6 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -421,6 +421,8 @@
 
     <style name="AppActionPrimaryButton" parent="android:Widget.Material.Button.Colored"/>
 
+    <style name="DreamStartButton" parent="android:Widget.Material.Button" />
+
     <style name="LockPatternStyle">
         <item name="*android:regularColor">@color/lock_pattern_view_regular_color</item>
         <item name="*android:successColor">@color/lock_pattern_view_success_color</item>
diff --git a/res/xml/display_settings.xml b/res/xml/display_settings.xml
index 9d4acb49558..8815665ac09 100644
--- a/res/xml/display_settings.xml
+++ b/res/xml/display_settings.xml
@@ -76,7 +76,7 @@
     <Preference
         android:key="screensaver"
         android:title="@string/screensaver_settings_title"
-        android:fragment="com.android.settings.DreamSettings" />
+        android:fragment="com.android.settings.dream.DreamSettings" />
 
     <!-- Hide night mode for now
     <ListPreference
diff --git a/res/xml/dream_fragment_overview.xml b/res/xml/dream_fragment_overview.xml
new file mode 100644
index 00000000000..d27a6e3747b
--- /dev/null
+++ b/res/xml/dream_fragment_overview.xml
@@ -0,0 +1,41 @@
+<?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:settings="http://schemas.android.com/apk/res/com.android.settings"
+    android:title="@string/screensaver_settings_title" >
+
+    <com.android.settings.widget.GearPreference
+        android:key="current_screensaver"
+        android:title="@string/screensaver_settings_current"
+        android:fragment="com.android.settings.dream.CurrentDreamPicker" />
+
+    <Preference
+        android:key="when_to_start"
+        android:title="@string/screensaver_settings_when_to_dream"
+        android:fragment="com.android.settings.dream.WhenToDreamPicker" />
+
+
+    <!-- Layout preference doesn't obey allowDividerAbove, so put it in a PreferenceCategory -->
+    <PreferenceCategory>
+        <com.android.settings.applications.LayoutPreference
+            android:key="dream_start_now_button_container"
+            android:selectable="false"
+            android:layout="@layout/dream_start_button" />
+    </PreferenceCategory>
+
+</PreferenceScreen>
\ No newline at end of file
diff --git a/src/com/android/settings/DreamSettings.java b/src/com/android/settings/DreamSettings.java
deleted file mode 100644
index bb9e9783e81..00000000000
--- a/src/com/android/settings/DreamSettings.java
+++ /dev/null
@@ -1,364 +0,0 @@
-/*
- * Copyright (C) 2012 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.settings;
-
-import android.app.Activity;
-import android.app.AlertDialog;
-import android.app.Dialog;
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.os.Bundle;
-import android.support.v7.preference.Preference;
-import android.support.v7.preference.PreferenceViewHolder;
-import android.util.Log;
-import android.view.Menu;
-import android.view.MenuInflater;
-import android.view.MenuItem;
-import android.view.MenuItem.OnMenuItemClickListener;
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.view.View.OnTouchListener;
-import android.widget.ImageView;
-import android.widget.RadioButton;
-import android.widget.Switch;
-import android.widget.TextView;
-
-import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
-import com.android.settings.widget.SwitchBar;
-import com.android.settingslib.dream.DreamBackend;
-import com.android.settingslib.dream.DreamBackend.DreamInfo;
-
-import java.util.List;
-
-public class DreamSettings extends SettingsPreferenceFragment implements
-        SwitchBar.OnSwitchChangeListener {
-    private static final String TAG = DreamSettings.class.getSimpleName();
-    static final boolean DEBUG = false;
-    private static final int DIALOG_WHEN_TO_DREAM = 1;
-    private static final String PACKAGE_SCHEME = "package";
-
-    private final PackageReceiver mPackageReceiver = new PackageReceiver();
-
-    private Context mContext;
-    private DreamBackend mBackend;
-    private SwitchBar mSwitchBar;
-    private MenuItem[] mMenuItemsWhenEnabled;
-    private boolean mRefreshing;
-
-    @Override
-    public int getHelpResource() {
-        return R.string.help_url_dreams;
-    }
-
-    @Override
-    public void onAttach(Activity activity) {
-        logd("onAttach(%s)", activity.getClass().getSimpleName());
-        super.onAttach(activity);
-        mContext = activity;
-    }
-
-    @Override
-    public int getMetricsCategory() {
-        return MetricsEvent.DREAM;
-    }
-
-    @Override
-    public void onCreate(Bundle icicle) {
-        logd("onCreate(%s)", icicle);
-        super.onCreate(icicle);
-
-        mBackend = new DreamBackend(getActivity());
-
-        setHasOptionsMenu(true);
-    }
-
-    @Override
-    public void onSwitchChanged(Switch switchView, boolean isChecked) {
-        if (!mRefreshing) {
-            mBackend.setEnabled(isChecked);
-            refreshFromBackend();
-        }
-    }
-
-    @Override
-    public void onStart() {
-        logd("onStart()");
-        super.onStart();
-    }
-
-    @Override
-    public void onDestroyView() {
-        logd("onDestroyView()");
-        super.onDestroyView();
-
-        mSwitchBar.removeOnSwitchChangeListener(this);
-        mSwitchBar.hide();
-    }
-
-    @Override
-    public void onActivityCreated(Bundle savedInstanceState) {
-        logd("onActivityCreated(%s)", savedInstanceState);
-        super.onActivityCreated(savedInstanceState);
-
-        TextView emptyView = (TextView) getView().findViewById(android.R.id.empty);
-        emptyView.setText(R.string.screensaver_settings_disabled_prompt);
-        setEmptyView(emptyView);
-
-        final SettingsActivity sa = (SettingsActivity) getActivity();
-        mSwitchBar = sa.getSwitchBar();
-        mSwitchBar.addOnSwitchChangeListener(this);
-        mSwitchBar.show();
-    }
-
-    @Override
-    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
-        logd("onCreateOptionsMenu()");
-
-        boolean isEnabled = mBackend.isEnabled();
-
-        // create "start" action
-        MenuItem start = createMenuItem(menu, R.string.screensaver_settings_dream_start,
-                MenuItem.SHOW_AS_ACTION_NEVER,
-                isEnabled, new Runnable(){
-                    @Override
-                    public void run() {
-                        mBackend.startDreaming();
-                    }});
-
-        // create "when to dream" overflow menu item
-        MenuItem whenToDream = createMenuItem(menu,
-                R.string.screensaver_settings_when_to_dream,
-                MenuItem.SHOW_AS_ACTION_NEVER,
-                isEnabled,
-                new Runnable() {
-                    @Override
-                    public void run() {
-                        showDialog(DIALOG_WHEN_TO_DREAM);
-                    }});
-
-        // create "help" overflow menu item (make sure it appears last)
-        super.onCreateOptionsMenu(menu, inflater);
-
-        mMenuItemsWhenEnabled = new MenuItem[] { start, whenToDream };
-    }
-
-    private MenuItem createMenuItem(Menu menu,
-            int titleRes, int actionEnum, boolean isEnabled, final Runnable onClick) {
-        MenuItem item = menu.add(titleRes);
-        item.setShowAsAction(actionEnum);
-        item.setEnabled(isEnabled);
-        item.setOnMenuItemClickListener(new OnMenuItemClickListener() {
-            @Override
-            public boolean onMenuItemClick(MenuItem item) {
-                onClick.run();
-                return true;
-            }
-        });
-        return item;
-    }
-
-    @Override
-    public Dialog onCreateDialog(int dialogId) {
-        logd("onCreateDialog(%s)", dialogId);
-        if (dialogId == DIALOG_WHEN_TO_DREAM)
-            return createWhenToDreamDialog();
-        return super.onCreateDialog(dialogId);
-    }
-
-    @Override
-    public int getDialogMetricsCategory(int dialogId) {
-        if (dialogId == DIALOG_WHEN_TO_DREAM) {
-            return MetricsEvent.DIALOG_DREAM_START_DELAY;
-        }
-        return 0;
-    }
-
-    private Dialog createWhenToDreamDialog() {
-        final CharSequence[] items = {
-                mContext.getString(R.string.screensaver_settings_summary_dock),
-                mContext.getString(R.string.screensaver_settings_summary_sleep),
-                mContext.getString(R.string.screensaver_settings_summary_either_short)
-        };
-
-        int initialSelection = mBackend.isActivatedOnDock() && mBackend.isActivatedOnSleep() ? 2
-                : mBackend.isActivatedOnDock() ? 0
-                : mBackend.isActivatedOnSleep() ? 1
-                : -1;
-
-        return new AlertDialog.Builder(mContext)
-                .setTitle(R.string.screensaver_settings_when_to_dream)
-                .setSingleChoiceItems(items, initialSelection, new DialogInterface.OnClickListener() {
-                    public void onClick(DialogInterface dialog, int item) {
-                        mBackend.setActivatedOnDock(item == 0 || item == 2);
-                        mBackend.setActivatedOnSleep(item == 1 || item == 2);
-                        dialog.dismiss();
-                    }
-                })
-                .create();
-    }
-
-    @Override
-    public void onPause() {
-        logd("onPause()");
-        super.onPause();
-
-        mContext.unregisterReceiver(mPackageReceiver);
-    }
-
-    @Override
-    public void onResume() {
-        logd("onResume()");
-        super.onResume();
-        refreshFromBackend();
-
-        // listen for package changes
-        IntentFilter filter = new IntentFilter();
-        filter.addAction(Intent.ACTION_PACKAGE_ADDED);
-        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
-        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
-        filter.addAction(Intent.ACTION_PACKAGE_REPLACED);
-        filter.addDataScheme(PACKAGE_SCHEME);
-        mContext.registerReceiver(mPackageReceiver , filter);
-    }
-
-    public static int getSummaryResource(Context context) {
-        DreamBackend backend = new DreamBackend(context);
-        boolean isEnabled = backend.isEnabled();
-        boolean activatedOnSleep = backend.isActivatedOnSleep();
-        boolean activatedOnDock = backend.isActivatedOnDock();
-        boolean activatedOnEither = activatedOnSleep && activatedOnDock;
-        return !isEnabled ? R.string.screensaver_settings_summary_off
-                : activatedOnEither ? R.string.screensaver_settings_summary_either_long
-                : activatedOnSleep ? R.string.screensaver_settings_summary_sleep
-                : activatedOnDock ? R.string.screensaver_settings_summary_dock
-                : 0;
-    }
-
-    public static CharSequence getSummaryTextWithDreamName(Context context) {
-        DreamBackend backend = new DreamBackend(context);
-        boolean isEnabled = backend.isEnabled();
-        if (!isEnabled) {
-            return context.getString(R.string.screensaver_settings_summary_off);
-        } else {
-            return backend.getActiveDreamName();
-        }
-    }
-
-    private void refreshFromBackend() {
-        logd("refreshFromBackend()");
-        mRefreshing = true;
-        boolean dreamsEnabled = mBackend.isEnabled();
-        if (mSwitchBar.isChecked() != dreamsEnabled) {
-            mSwitchBar.setChecked(dreamsEnabled);
-        }
-
-        if (getPreferenceScreen() == null) {
-            setPreferenceScreen(getPreferenceManager().createPreferenceScreen(getContext()));
-        }
-        getPreferenceScreen().removeAll();
-        if (dreamsEnabled) {
-            List<DreamBackend.DreamInfo> dreamInfos = mBackend.getDreamInfos();
-            final int N = dreamInfos.size();
-            for (int i = 0; i < N; i++) {
-                getPreferenceScreen().addPreference(
-                        new DreamInfoPreference(getPrefContext(), dreamInfos.get(i)));
-            }
-        }
-        if (mMenuItemsWhenEnabled != null) {
-            for (MenuItem menuItem : mMenuItemsWhenEnabled) {
-                menuItem.setEnabled(dreamsEnabled);
-            }
-        }
-        mRefreshing = false;
-    }
-
-    private static void logd(String msg, Object... args) {
-        if (DEBUG) Log.d(TAG, args == null || args.length == 0 ? msg : String.format(msg, args));
-    }
-
-    private class DreamInfoPreference extends Preference {
-
-        private final DreamInfo mInfo;
-
-        public DreamInfoPreference(Context context, DreamInfo info) {
-            super(context);
-            mInfo = info;
-            setLayoutResource(R.layout.dream_info_row);
-            setTitle(mInfo.caption);
-            setIcon(mInfo.icon);
-        }
-
-        public void onBindViewHolder(final PreferenceViewHolder holder) {
-            super.onBindViewHolder(holder);
-
-            // bind radio button
-            RadioButton radioButton = (RadioButton) holder.findViewById(android.R.id.button1);
-            radioButton.setChecked(mInfo.isActive);
-            radioButton.setOnTouchListener(new OnTouchListener() {
-                @Override
-                public boolean onTouch(View v, MotionEvent event) {
-                    holder.itemView.onTouchEvent(event);
-                    return false;
-                }
-            });
-
-            // bind settings button + divider
-            boolean showSettings = mInfo.settingsComponentName != null;
-            View settingsDivider = holder.findViewById(R.id.divider);
-            settingsDivider.setVisibility(showSettings ? View.VISIBLE : View.INVISIBLE);
-
-            ImageView settingsButton = (ImageView) holder.findViewById(android.R.id.button2);
-            settingsButton.setVisibility(showSettings ? View.VISIBLE : View.INVISIBLE);
-            settingsButton.setAlpha(mInfo.isActive ? 1f : Utils.DISABLED_ALPHA);
-            settingsButton.setEnabled(mInfo.isActive);
-            settingsButton.setFocusable(mInfo.isActive);
-            settingsButton.setOnClickListener(new OnClickListener(){
-                @Override
-                public void onClick(View v) {
-                    mBackend.launchSettings(mInfo);
-                }
-            });
-        }
-
-        @Override
-        public void performClick() {
-            if (mInfo.isActive)
-                return;
-            for (int i = 0; i < getPreferenceScreen().getPreferenceCount(); i++) {
-                DreamInfoPreference preference =
-                        (DreamInfoPreference) getPreferenceScreen().getPreference(i);
-                preference.mInfo.isActive = false;
-                preference.notifyChanged();
-            }
-            mInfo.isActive = true;
-            mBackend.setActiveDream(mInfo.componentName);
-            notifyChanged();
-        }
-    }
-
-    private class PackageReceiver extends BroadcastReceiver {
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            logd("PackageReceiver.onReceive");
-            refreshFromBackend();
-        }
-    }
-}
diff --git a/src/com/android/settings/core/gateway/SettingsGateway.java b/src/com/android/settings/core/gateway/SettingsGateway.java
index caac95fc9d3..ab1accc430f 100644
--- a/src/com/android/settings/core/gateway/SettingsGateway.java
+++ b/src/com/android/settings/core/gateway/SettingsGateway.java
@@ -25,7 +25,7 @@ import com.android.settings.DateTimeSettings;
 import com.android.settings.DeviceAdminSettings;
 import com.android.settings.DeviceInfoSettings;
 import com.android.settings.DisplaySettings;
-import com.android.settings.DreamSettings;
+import com.android.settings.dream.DreamSettings;
 import com.android.settings.IccLockSettings;
 import com.android.settings.MasterClear;
 import com.android.settings.PrivacySettings;
diff --git a/src/com/android/settings/display/ScreenSaverPreferenceController.java b/src/com/android/settings/display/ScreenSaverPreferenceController.java
index fab9062bd73..7a10802a898 100644
--- a/src/com/android/settings/display/ScreenSaverPreferenceController.java
+++ b/src/com/android/settings/display/ScreenSaverPreferenceController.java
@@ -16,8 +16,8 @@ package com.android.settings.display;
 import android.content.Context;
 import android.support.v7.preference.Preference;
 
-import com.android.settings.DreamSettings;
 import com.android.settings.core.PreferenceController;
+import com.android.settings.dream.DreamSettings;
 
 public class ScreenSaverPreferenceController extends PreferenceController {
 
diff --git a/src/com/android/settings/dream/CurrentDreamPicker.java b/src/com/android/settings/dream/CurrentDreamPicker.java
new file mode 100644
index 00000000000..da9bf9e3be0
--- /dev/null
+++ b/src/com/android/settings/dream/CurrentDreamPicker.java
@@ -0,0 +1,117 @@
+/*
+ * 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.settings.dream;
+
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.widget.RadioButtonPickerFragment;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.DreamInfo;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public final class CurrentDreamPicker extends RadioButtonPickerFragment {
+
+    private DreamBackend mBackend;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+
+        mBackend = DreamBackend.getInstance(context);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsProto.MetricsEvent.DREAM;
+    }
+
+    @Override
+    protected boolean setDefaultKey(String key) {
+        Map<String, ComponentName> componentNameMap = getDreamComponentsMap();
+        if (componentNameMap.get(key) != null) {
+            mBackend.setActiveDream(componentNameMap.get(key));
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    protected String getDefaultKey() {
+        return mBackend.getActiveDream().flattenToString();
+    }
+
+    @Override
+    protected List<? extends CandidateInfo> getCandidates() {
+        final List<DreamCandidateInfo> candidates;
+        candidates = mBackend.getDreamInfos().stream()
+                .map(DreamCandidateInfo::new)
+                .collect(Collectors.toList());
+
+        return candidates;
+    }
+
+    @Override
+    protected void onSelectionPerformed(boolean success) {
+        super.onSelectionPerformed(success);
+
+        getActivity().finish();
+    }
+
+    private Map<String, ComponentName> getDreamComponentsMap() {
+        Map<String, ComponentName> comps = new HashMap<>();
+        mBackend.getDreamInfos()
+                .forEach((info) ->
+                        comps.put(info.componentName.flattenToString(), info.componentName));
+
+        return comps;
+    }
+
+    private static final class DreamCandidateInfo extends CandidateInfo {
+        private final CharSequence name;
+        private final Drawable icon;
+        private final String key;
+
+        DreamCandidateInfo(DreamInfo info) {
+            super(true);
+
+            name = info.caption;
+            icon = info.icon;
+            key = info.componentName.flattenToString();
+        }
+
+        @Override
+        public CharSequence loadLabel() {
+            return name;
+        }
+
+        @Override
+        public Drawable loadIcon() {
+            return icon;
+        }
+
+        @Override
+        public String getKey() {
+            return key;
+        }
+    }
+}
diff --git a/src/com/android/settings/dream/CurrentDreamPreferenceController.java b/src/com/android/settings/dream/CurrentDreamPreferenceController.java
new file mode 100644
index 00000000000..5b448f8c983
--- /dev/null
+++ b/src/com/android/settings/dream/CurrentDreamPreferenceController.java
@@ -0,0 +1,79 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.widget.GearPreference;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.DreamInfo;
+import java.util.Optional;
+
+public class CurrentDreamPreferenceController extends PreferenceController {
+    private final DreamBackend mBackend;
+    private final static String TAG = "CurrentDreamPreferenceController";
+    private final static String CURRENT_SCREENSAVER = "current_screensaver";
+
+    public CurrentDreamPreferenceController(Context context) {
+        super(context);
+        mBackend = DreamBackend.getInstance(context);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return mBackend.getDreamInfos().size() > 0;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return CURRENT_SCREENSAVER;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+
+        preference.setSummary(mBackend.getActiveDreamName());
+        setGearClickListenerForPreference(preference);
+    }
+
+    private void setGearClickListenerForPreference(Preference preference) {
+        if (!(preference instanceof GearPreference)) return;
+
+        GearPreference gearPreference = (GearPreference)preference;
+        Optional<DreamInfo> info = getActiveDreamInfo();
+        if (!info.isPresent() || info.get().settingsComponentName == null) {
+            gearPreference.setOnGearClickListener(null);
+            return;
+        }
+        gearPreference.setOnGearClickListener(gearPref -> launchScreenSaverSettings());
+    }
+
+    private void launchScreenSaverSettings() {
+        Optional<DreamInfo> info = getActiveDreamInfo();
+        if (!info.isPresent()) return;
+        mBackend.launchSettings(info.get());
+    }
+
+    private Optional<DreamInfo> getActiveDreamInfo() {
+        return mBackend.getDreamInfos()
+                .stream()
+                .filter((info) -> info.isActive)
+                .findFirst();
+    }
+}
diff --git a/src/com/android/settings/dream/DreamSettings.java b/src/com/android/settings/dream/DreamSettings.java
new file mode 100644
index 00000000000..8cf9edb0c3d
--- /dev/null
+++ b/src/com/android/settings/dream/DreamSettings.java
@@ -0,0 +1,147 @@
+/*
+ * 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.settings.dream;
+
+import android.provider.SearchIndexableResource;
+import android.support.annotation.VisibleForTesting;
+import com.android.settings.R;
+import com.android.settings.core.PreferenceController;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.WhenToDream;
+import java.util.ArrayList;
+import android.content.Context;
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
+import java.util.Arrays;
+import java.util.List;
+
+import static com.android.settingslib.dream.DreamBackend.EITHER;
+import static com.android.settingslib.dream.DreamBackend.NEVER;
+import static com.android.settingslib.dream.DreamBackend.WHILE_CHARGING;
+import static com.android.settingslib.dream.DreamBackend.WHILE_DOCKED;
+
+public class DreamSettings extends DashboardFragment {
+
+    private static final String TAG = "DreamSettings";
+    static final String WHILE_CHARGING_ONLY = "while_charging_only";
+    static final String WHILE_DOCKED_ONLY = "while_docked_only";
+    static final String EITHER_CHARGING_OR_DOCKED = "either_charging_or_docked";
+    static final String NEVER_DREAM = "never";
+
+    @WhenToDream
+    static int getSettingFromPrefKey(String key) {
+        switch (key) {
+            case WHILE_CHARGING_ONLY:
+                return WHILE_CHARGING;
+            case WHILE_DOCKED_ONLY:
+                return WHILE_DOCKED;
+            case EITHER_CHARGING_OR_DOCKED:
+                return EITHER;
+            case NEVER_DREAM:
+            default:
+                return NEVER;
+        }
+    }
+
+    static String getKeyFromSetting(@WhenToDream int dreamSetting) {
+        switch (dreamSetting) {
+            case WHILE_CHARGING:
+                return WHILE_CHARGING_ONLY;
+            case WHILE_DOCKED:
+                return WHILE_DOCKED_ONLY;
+            case EITHER:
+                return EITHER_CHARGING_OR_DOCKED;
+            case NEVER:
+            default:
+                return NEVER_DREAM;
+        }
+    }
+
+    static int getDreamSettingDescriptionResId(@WhenToDream int dreamSetting) {
+        switch (dreamSetting) {
+            case WHILE_CHARGING:
+                return R.string.screensaver_settings_summary_sleep;
+            case WHILE_DOCKED:
+                return R.string.screensaver_settings_summary_dock;
+            case EITHER:
+                return R.string.screensaver_settings_summary_either_long;
+            case NEVER:
+            default:
+                return R.string.screensaver_settings_summary_never;
+        }
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsEvent.DREAM;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.dream_fragment_overview;
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected List<PreferenceController> getPreferenceControllers(Context context) {
+        return buildPreferenceControllers(context);
+    }
+
+    public static CharSequence getSummaryTextWithDreamName(Context context) {
+        DreamBackend backend = DreamBackend.getInstance(context);
+        return getSummaryTextFromBackend(backend, context);
+    }
+
+    @VisibleForTesting
+    static CharSequence getSummaryTextFromBackend(DreamBackend backend, Context context) {
+        if (!backend.isEnabled()) {
+            return context.getString(R.string.screensaver_settings_summary_off);
+        } else {
+            return backend.getActiveDreamName();
+        }
+    }
+
+    private static List<PreferenceController> buildPreferenceControllers(Context context) {
+        List<PreferenceController> controllers = new ArrayList<>();
+        controllers.add(new CurrentDreamPreferenceController(context));
+        controllers.add(new WhenToDreamPreferenceController(context));
+        controllers.add(new StartNowPreferenceController(context));
+        return controllers;
+    }
+
+    public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER
+            = new BaseSearchIndexProvider() {
+                @Override
+                public List<SearchIndexableResource> getXmlResourcesToIndex(
+                        Context context, boolean enabled) {
+                    final SearchIndexableResource sir = new SearchIndexableResource(context);
+                    sir.xmlResId = R.xml.dream_fragment_overview;
+                    return Arrays.asList(sir);
+                }
+
+                @Override
+                public List<PreferenceController> getPreferenceControllers(Context context) {
+                    return buildPreferenceControllers(context);
+                }
+            };
+}
+
diff --git a/src/com/android/settings/dream/StartNowPreferenceController.java b/src/com/android/settings/dream/StartNowPreferenceController.java
new file mode 100644
index 00000000000..994b70b2245
--- /dev/null
+++ b/src/com/android/settings/dream/StartNowPreferenceController.java
@@ -0,0 +1,66 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.widget.Button;
+import com.android.settings.R;
+import com.android.settings.applications.LayoutPreference;
+import com.android.settings.core.PreferenceController;
+import com.android.settingslib.dream.DreamBackend;
+
+public class StartNowPreferenceController extends PreferenceController {
+    private static final String TAG = "StartNowPreferenceController";
+    private static final String PREF_KEY = "dream_start_now_button_container";
+    private final DreamBackend mBackend;
+
+    public StartNowPreferenceController(Context context) {
+        super(context);
+
+        mBackend = DreamBackend.getInstance(context);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return PREF_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        LayoutPreference pref = (LayoutPreference) screen.findPreference(getPreferenceKey());
+        Button startButton = (Button)pref.findViewById(R.id.dream_start_now_button);
+        startButton.setOnClickListener(v -> mBackend.startDreaming());
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+
+        Button startButton = (Button)((LayoutPreference)preference)
+                .findViewById(R.id.dream_start_now_button);
+        startButton.setEnabled(mBackend.getWhenToDreamSetting() != DreamBackend.NEVER);
+    }
+}
diff --git a/src/com/android/settings/dream/WhenToDreamPicker.java b/src/com/android/settings/dream/WhenToDreamPicker.java
new file mode 100644
index 00000000000..a55064dc345
--- /dev/null
+++ b/src/com/android/settings/dream/WhenToDreamPicker.java
@@ -0,0 +1,115 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import com.android.internal.logging.nano.MetricsProto;
+import com.android.settings.R;
+import com.android.settings.widget.RadioButtonPickerFragment;
+import com.android.settingslib.dream.DreamBackend;
+import java.util.ArrayList;
+import java.util.List;
+
+public class WhenToDreamPicker extends RadioButtonPickerFragment {
+
+    private static final String TAG = "WhenToDreamPicker";
+    private DreamBackend mBackend;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+
+        mBackend = DreamBackend.getInstance(context);
+    }
+
+    @Override
+    public int getMetricsCategory() {
+        return MetricsProto.MetricsEvent.DREAM;
+    }
+
+    @Override
+    protected List<? extends CandidateInfo> getCandidates() {
+        final String[] entries = entries();
+        final String[] values = keys();
+        final List<WhenToDreamCandidateInfo> candidates = new ArrayList<>();
+
+        if (entries == null || entries.length <= 0) return null;
+        if (values == null || values.length != entries.length) {
+            throw new IllegalArgumentException("Entries and values must be of the same length.");
+        }
+
+        for (int i = 0; i < entries.length; i++) {
+            candidates.add(new WhenToDreamCandidateInfo(entries[i], values[i]));
+        }
+
+        return candidates;
+    }
+
+    private String[] entries() {
+        return getResources().getStringArray(R.array.when_to_start_screensaver_entries);
+    }
+
+    private String[] keys() {
+        return getResources().getStringArray(R.array.when_to_start_screensaver_values);
+    }
+
+    @Override
+    protected String getDefaultKey() {
+        return DreamSettings.getKeyFromSetting(mBackend.getWhenToDreamSetting());
+    }
+
+    @Override
+    protected boolean setDefaultKey(String key) {
+        mBackend.setWhenToDream(DreamSettings.getSettingFromPrefKey(key));
+        return true;
+    }
+
+    @Override
+    protected void onSelectionPerformed(boolean success) {
+        super.onSelectionPerformed(success);
+
+        getActivity().finish();
+    }
+
+    private final class WhenToDreamCandidateInfo extends CandidateInfo {
+        private final String name;
+        private final String key;
+
+        WhenToDreamCandidateInfo(String title, String value) {
+            super(true);
+
+            name = title;
+            key = value;
+        }
+
+        @Override
+        public CharSequence loadLabel() {
+            return name;
+        }
+
+        @Override
+        public Drawable loadIcon() {
+            return null;
+        }
+
+        @Override
+        public String getKey() {
+            return key;
+        }
+    }
+}
diff --git a/src/com/android/settings/dream/WhenToDreamPreferenceController.java b/src/com/android/settings/dream/WhenToDreamPreferenceController.java
new file mode 100644
index 00000000000..0d870fda0b5
--- /dev/null
+++ b/src/com/android/settings/dream/WhenToDreamPreferenceController.java
@@ -0,0 +1,52 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import com.android.settings.core.PreferenceController;
+import com.android.settingslib.dream.DreamBackend;
+
+public class WhenToDreamPreferenceController extends PreferenceController {
+
+    private static final String WHEN_TO_START = "when_to_start";
+    private final DreamBackend mBackend;
+
+    WhenToDreamPreferenceController(Context context) {
+        super(context);
+
+        mBackend = DreamBackend.getInstance(context);
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+
+        int resId = DreamSettings.getDreamSettingDescriptionResId(mBackend.getWhenToDreamSetting());
+        preference.setSummary(preference.getContext().getString(resId));
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return WHEN_TO_START;
+    }
+}
diff --git a/src/com/android/settings/search/SearchIndexableResources.java b/src/com/android/settings/search/SearchIndexableResources.java
index 63e8a7a3f15..75ac350129e 100644
--- a/src/com/android/settings/search/SearchIndexableResources.java
+++ b/src/com/android/settings/search/SearchIndexableResources.java
@@ -47,6 +47,7 @@ import com.android.settings.development.DevelopmentSettings;
 import com.android.settings.deviceinfo.StorageDashboardFragment;
 import com.android.settings.deviceinfo.StorageSettings;
 import com.android.settings.display.ScreenZoomSettings;
+import com.android.settings.dream.DreamSettings;
 import com.android.settings.enterprise.EnterprisePrivacySettings;
 import com.android.settings.fuelgauge.BatterySaverSettings;
 import com.android.settings.fuelgauge.PowerUsageAdvanced;
@@ -185,6 +186,7 @@ public final class SearchIndexableResources {
                 R.drawable.ic_settings_accessibility);
         addIndex(ChannelImportanceSettings.class, NO_DATA_RES_ID,
                 R.drawable.ic_settings_notifications);
+        addIndex(DreamSettings.class, NO_DATA_RES_ID, R.drawable.ic_settings_display);
     }
 
     private SearchIndexableResources() {
diff --git a/tests/robotests/src/com/android/settings/dream/CurrentDreamPickerTest.java b/tests/robotests/src/com/android/settings/dream/CurrentDreamPickerTest.java
new file mode 100644
index 00000000000..24082b610bb
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/dream/CurrentDreamPickerTest.java
@@ -0,0 +1,91 @@
+/*
+ * 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.settings.dream;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Context;
+import android.os.UserManager;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.FakeFeatureFactory;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.DreamInfo;
+import java.util.ArrayList;
+import java.util.Arrays;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class CurrentDreamPickerTest {
+    private static String COMPONENT_KEY = "mocked_component_name_string";
+
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private DreamBackend mBackend;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Activity mActivity;
+    @Mock
+    private UserManager mUserManager;
+    private CurrentDreamPicker mPicker;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        when(mActivity.getSystemService(Context.USER_SERVICE)).thenReturn(mUserManager);
+        FakeFeatureFactory.setupForTest(mActivity);
+
+        mPicker = new CurrentDreamPicker();
+        mPicker.onAttach((Context)mActivity);
+
+        ReflectionHelpers.setField(mPicker, "mBackend", mBackend);
+    }
+
+    @Test
+    public void getDefaultShouldReturnActiveDream() {
+        ComponentName mockComponentName = mock(ComponentName.class);
+        when(mockComponentName.flattenToString()).thenReturn(COMPONENT_KEY);
+        when(mBackend.getActiveDream()).thenReturn(mockComponentName);
+
+        assertThat(mPicker.getDefaultKey()).isEqualTo(COMPONENT_KEY);
+    }
+
+    @Test
+    public void setDefaultShouldUpdateActiveDream() {
+        DreamInfo mockInfo = mock(DreamInfo.class);
+        ComponentName mockName = mock(ComponentName.class);
+
+        mockInfo.componentName = mockName;
+        when(mockName.flattenToString()).thenReturn(COMPONENT_KEY);
+        when(mBackend.getDreamInfos()).thenReturn(new ArrayList<>(Arrays.asList(mockInfo)));
+
+        mPicker.setDefaultKey(COMPONENT_KEY);
+
+        verify(mBackend).setActiveDream(mockName);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/dream/CurrentDreamPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/dream/CurrentDreamPreferenceControllerTest.java
new file mode 100644
index 00000000000..c55f080ed9f
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/dream/CurrentDreamPreferenceControllerTest.java
@@ -0,0 +1,111 @@
+/*
+ * 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.settings.dream;
+
+import android.content.ComponentName;
+import android.content.Context;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.widget.GearPreference;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.DreamInfo;
+import java.util.ArrayList;
+import java.util.Arrays;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class CurrentDreamPreferenceControllerTest {
+    private static String TAG = "CurrentDreamPreferenceControllerTest";
+
+    private CurrentDreamPreferenceController mController;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private DreamBackend mBackend;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+    @Mock
+    private DreamInfo mDreamInfo;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+
+        mController = new CurrentDreamPreferenceController(mContext);
+        ReflectionHelpers.setField(mController, "mBackend", mBackend);
+    }
+
+    @Test
+    public void isDisabledIfNoDreamsAvailable() {
+        when(mBackend.getDreamInfos()).thenReturn(new ArrayList<>(0));
+
+        assertThat(mController.isAvailable()).isFalse();
+    }
+
+    @Test
+    public void isEnabledIfDreamsAvailable() {
+        when(mBackend.getDreamInfos()).thenReturn(new ArrayList<>(Arrays.asList(mDreamInfo)));
+
+        assertThat(mController.isAvailable()).isTrue();
+    }
+
+    @Test
+    public void gearShowsIfActiveDreamInfoHasOptions() {
+        mDreamInfo.settingsComponentName = mock(ComponentName.class);
+        mDreamInfo.isActive = true;
+
+        when(mBackend.getDreamInfos()).thenReturn(new ArrayList<>(Arrays.asList(mDreamInfo)));
+
+        GearPreference mockPref = mock(GearPreference.class);
+        ArgumentCaptor<GearPreference.OnGearClickListener> captor =
+                ArgumentCaptor.forClass(GearPreference.OnGearClickListener.class);
+
+        // verify that updateState sets a non-null gear click listener
+        mController.updateState(mockPref);
+        verify(mockPref).setOnGearClickListener(captor.capture());
+        captor.getAllValues().forEach(listener -> assertThat(listener).isNotNull());
+    }
+
+    @Test
+    public void gearHidesIfActiveDreamInfoHasNoOptions() {
+        mDreamInfo.settingsComponentName = null;
+        mDreamInfo.isActive = true;
+
+        when(mBackend.getDreamInfos()).thenReturn(new ArrayList<>(Arrays.asList(mDreamInfo)));
+
+        GearPreference mockPref = mock(GearPreference.class);
+        ArgumentCaptor<GearPreference.OnGearClickListener> captor =
+                ArgumentCaptor.forClass(GearPreference.OnGearClickListener.class);
+
+        // setting a null onGearClickListener removes the gear from view
+        mController.updateState(mockPref);
+        verify(mockPref).setOnGearClickListener(captor.capture());
+        captor.getAllValues().forEach(listener -> assertThat(listener).isNull());
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/dream/DreamSettingsTest.java b/tests/robotests/src/com/android/settings/dream/DreamSettingsTest.java
new file mode 100644
index 00000000000..95f57b3fd74
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/dream/DreamSettingsTest.java
@@ -0,0 +1,113 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.WhenToDream;
+import java.util.Arrays;
+import java.util.List;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class DreamSettingsTest {
+    private static final List<String> KEYS = Arrays.asList(
+            DreamSettings.WHILE_CHARGING_ONLY,
+            DreamSettings.WHILE_DOCKED_ONLY,
+            DreamSettings.EITHER_CHARGING_OR_DOCKED,
+            DreamSettings.NEVER_DREAM
+        );
+
+    private static final @WhenToDream int[] SETTINGS = {
+                DreamBackend.WHILE_CHARGING,
+                DreamBackend.WHILE_DOCKED,
+                DreamBackend.EITHER,
+                DreamBackend.NEVER,
+        };
+
+    private static final int[] RES_IDS = {
+            R.string.screensaver_settings_summary_sleep,
+            R.string.screensaver_settings_summary_dock,
+            R.string.screensaver_settings_summary_either_long,
+            R.string.screensaver_settings_summary_never
+    };
+
+    @Test
+    public void getSettingFromPrefKey() {
+        for (int i = 0; i < KEYS.size(); i++) {
+            assertThat(DreamSettings.getSettingFromPrefKey(KEYS.get(i)))
+                    .isEqualTo(SETTINGS[i]);
+        }
+        // Default case
+        assertThat(DreamSettings.getSettingFromPrefKey("garbage value"))
+                .isEqualTo(DreamBackend.NEVER);
+    }
+
+    @Test
+    public void getKeyFromSetting() {
+        for (int i = 0; i < SETTINGS.length; i++) {
+            assertThat(DreamSettings.getKeyFromSetting(SETTINGS[i]))
+                    .isEqualTo(KEYS.get(i));
+        }
+        // Default
+        assertThat(DreamSettings.getKeyFromSetting(-1))
+                .isEqualTo(DreamSettings.NEVER_DREAM);
+    }
+
+    @Test
+    public void getDreamSettingDescriptionResId() {
+        for (int i = 0; i < SETTINGS.length; i++) {
+            assertThat(DreamSettings.getDreamSettingDescriptionResId(SETTINGS[i]))
+                    .isEqualTo(RES_IDS[i]);
+        }
+        // Default
+        assertThat(DreamSettings.getDreamSettingDescriptionResId(-1))
+                .isEqualTo(R.string.screensaver_settings_summary_never);
+    }
+
+    @Test
+    public void summaryText_whenDreamsAreOff() {
+        DreamBackend mockBackend = mock(DreamBackend.class);
+        Context mockContext = mock(Context.class);
+        when(mockBackend.isEnabled()).thenReturn(false);
+
+        assertThat(DreamSettings.getSummaryTextFromBackend(mockBackend, mockContext))
+                .isEqualTo(mockContext.getString(R.string.screensaver_settings_summary_off));
+    }
+
+    @Test
+    public void summaryTest_WhenDreamsAreOn() {
+        final String fakeName = "test_name";
+        DreamBackend mockBackend = mock(DreamBackend.class);
+        Context mockContext = mock(Context.class);
+        when(mockBackend.isEnabled()).thenReturn(true);
+        when(mockBackend.getActiveDreamName()).thenReturn(fakeName);
+
+        assertThat(DreamSettings.getSummaryTextFromBackend(mockBackend, mockContext))
+                .isEqualTo(fakeName);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/dream/StartNowPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/dream/StartNowPreferenceControllerTest.java
new file mode 100644
index 00000000000..5cbd6106004
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/dream/StartNowPreferenceControllerTest.java
@@ -0,0 +1,94 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import android.support.v7.preference.PreferenceScreen;
+import android.view.View.OnClickListener;
+import android.widget.Button;
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.applications.LayoutPreference;
+import com.android.settingslib.dream.DreamBackend;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class StartNowPreferenceControllerTest {
+    private StartNowPreferenceController mController;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+    @Mock
+    private PreferenceScreen mScreen;
+    @Mock
+    private LayoutPreference mLayoutPref;
+    @Mock
+    private Button mButton;
+    @Mock
+    private DreamBackend mBackend;
+
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+
+        mController = new StartNowPreferenceController(mContext);
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mLayoutPref);
+        when(mLayoutPref.findViewById(R.id.dream_start_now_button)).thenReturn(mButton);
+
+        ReflectionHelpers.setField(mController, "mBackend", mBackend);
+    }
+
+    @Test
+    public void setsOnClickListenerForStartNow() {
+        ArgumentCaptor<OnClickListener> captor =
+                ArgumentCaptor.forClass(Button.OnClickListener.class);
+
+        mController.displayPreference(mScreen);
+        verify(mButton).setOnClickListener(captor.capture());
+        assertThat(captor.getValue()).isNotNull();
+    }
+
+    @Test
+    public void buttonIsDisabledWhenNeverDreaming() {
+        when(mBackend.getWhenToDreamSetting()).thenReturn(DreamBackend.NEVER);
+
+        mController.updateState(mLayoutPref);
+        verify(mButton).setEnabled(false);
+    }
+
+    @Test
+    public void buttonIsEnabledWhenDreamIsAvailable() {
+        when(mBackend.getWhenToDreamSetting()).thenReturn(DreamBackend.EITHER);
+
+        mController.updateState(mLayoutPref);
+        verify(mButton).setEnabled(true);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/dream/WhenToDreamPickerTest.java b/tests/robotests/src/com/android/settings/dream/WhenToDreamPickerTest.java
new file mode 100644
index 00000000000..2571e1ba96c
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/dream/WhenToDreamPickerTest.java
@@ -0,0 +1,108 @@
+/*
+ * 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.settings.dream;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.UserManager;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.FakeFeatureFactory;
+import com.android.settingslib.dream.DreamBackend;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class WhenToDreamPickerTest {
+    private WhenToDreamPicker mPicker;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private DreamBackend mBackend;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Activity mActivity;
+    @Mock
+    private UserManager mUserManager;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        when(mActivity.getSystemService(Context.USER_SERVICE)).thenReturn(mUserManager);
+        FakeFeatureFactory.setupForTest(mActivity);
+
+        mPicker = new WhenToDreamPicker();
+        mPicker.onAttach((Context)mActivity);
+
+        ReflectionHelpers.setField(mPicker, "mBackend", mBackend);
+    }
+
+    @Test
+    public void getDefaultKeyReturnsCurrentWhenToDreamSetting() {
+        when(mBackend.getWhenToDreamSetting()).thenReturn(DreamBackend.WHILE_CHARGING);
+        assertThat(mPicker.getDefaultKey())
+                .isEqualTo(DreamSettings.getKeyFromSetting(DreamBackend.WHILE_CHARGING));
+
+        when(mBackend.getWhenToDreamSetting()).thenReturn(DreamBackend.WHILE_DOCKED);
+        assertThat(mPicker.getDefaultKey())
+                .isEqualTo(DreamSettings.getKeyFromSetting(DreamBackend.WHILE_DOCKED));
+
+        when(mBackend.getWhenToDreamSetting()).thenReturn(DreamBackend.EITHER);
+        assertThat(mPicker.getDefaultKey())
+                .isEqualTo(DreamSettings.getKeyFromSetting(DreamBackend.EITHER));
+
+        when(mBackend.getWhenToDreamSetting()).thenReturn(DreamBackend.NEVER);
+        assertThat(mPicker.getDefaultKey())
+                .isEqualTo(DreamSettings.getKeyFromSetting(DreamBackend.NEVER));
+    }
+
+    @Test
+    public void setDreamWhileCharging() {
+        String key = DreamSettings.getKeyFromSetting(DreamBackend.WHILE_CHARGING);
+        mPicker.setDefaultKey(key);
+        verify(mBackend).setWhenToDream(DreamBackend.WHILE_CHARGING);
+    }
+
+    @Test
+    public void setDreamWhileDocked() {
+        String key = DreamSettings.getKeyFromSetting(DreamBackend.WHILE_DOCKED);
+        mPicker.setDefaultKey(key);
+        verify(mBackend).setWhenToDream(DreamBackend.WHILE_DOCKED);
+    }
+
+    @Test
+    public void setDreamWhileChargingOrDocked() {
+        String key = DreamSettings.getKeyFromSetting(DreamBackend.EITHER);
+        mPicker.setDefaultKey(key);
+        verify(mBackend).setWhenToDream(DreamBackend.EITHER);
+    }
+
+    @Test
+    public void setDreamNever() {
+        String key = DreamSettings.getKeyFromSetting(DreamBackend.NEVER);
+        mPicker.setDefaultKey(key);
+        verify(mBackend).setWhenToDream(DreamBackend.NEVER);
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/dream/WhenToDreamPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/dream/WhenToDreamPreferenceControllerTest.java
new file mode 100644
index 00000000000..0eded7bc591
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/dream/WhenToDreamPreferenceControllerTest.java
@@ -0,0 +1,70 @@
+/*
+ * 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.settings.dream;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+import com.android.settingslib.dream.DreamBackend;
+import com.android.settingslib.dream.DreamBackend.WhenToDream;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Answers;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class WhenToDreamPreferenceControllerTest {
+    private WhenToDreamPreferenceController mController;
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
+    private Context mContext;
+    @Mock
+    private DreamBackend mBackend;
+
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mController = new WhenToDreamPreferenceController(mContext);
+        ReflectionHelpers.setField(mController, "mBackend", mBackend);
+    }
+
+    @Test
+    public void updateSummary() {
+        // Don't have to test the other settings because DreamSettings tests that all
+        // @WhenToDream values map to the correct ResId
+        final @WhenToDream int testSetting = DreamBackend.WHILE_CHARGING;
+        final Preference mockPref = mock(Preference.class);
+        when(mockPref.getContext()).thenReturn(mContext);
+        when(mBackend.getWhenToDreamSetting()).thenReturn(testSetting);
+        final String expectedString =
+                mContext.getString(DreamSettings.getDreamSettingDescriptionResId(testSetting));
+
+        mController.updateState(mockPref);
+        verify(mockPref).setSummary(expectedString);
+    }
+}