Add Night display settings conditional

Bug: 30043281
Change-Id: I2464cd90f1f7f379aabf123f602e6150a87120cf

res/drawable/ic_settings_night_display.xml

@@ -0,0 +1,27 @@
+<!--
+    Copyright (C) 2016 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="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?android:attr/colorAccent">
+
+    <path
+        android:fillColor="#FFF"
+        android:pathData="M6,12c0,5.5,4.5,10,10,10c1,0,2-0.2,3-0.5c-4.1-1.3-7-5.1-7-9.5s2.9-8.3,7-9.5C18.1,2.2,17.1,2,16,2C10.5,2,6,6.5,6,12z" />
+
+</vector>

res/values/strings.xml

@@ -7266,6 +7266,12 @@
     <!-- Summary of condition that work mode is off [CHAR LIMIT=NONE] -->
     <string name="condition_work_summary">Apps, background sync, and other features related to your work profile are turned off.</string>
 
+    <!-- Title of condition that night display is on (renamed "Night Light" with title caps) [CHAR LIMIT=30] -->
+    <string name="condition_night_display_title">Night Light is on</string>
+
+    <!-- Summary of condition that night display is on (renamed "Night Light" with title caps) [CHAR LIMIT=NONE] -->
+    <string name="condition_night_display_summary">Screen is tinted red. This may help you fall asleep.</string>
+
     <!-- Title for the suggestions section on the dashboard [CHAR LIMIT=30] -->
     <string name="suggestions_title">Suggestions</string>
 

src/com/android/settings/dashboard/conditional/ConditionManager.java

@@ -142,6 +142,7 @@ public class ConditionManager {
         addIfMissing(CellularDataCondition.class, conditions);
         addIfMissing(BackgroundDataCondition.class, conditions);
         addIfMissing(WorkModeCondition.class, conditions);
+        addIfMissing(NightDisplayCondition.class, conditions);
         Collections.sort(conditions, CONDITION_COMPARATOR);
     }
 
@@ -167,6 +168,8 @@ public class ConditionManager {
             return new BackgroundDataCondition(this);
         } else if (WorkModeCondition.class == clz) {
             return new WorkModeCondition(this);
+        } else if (NightDisplayCondition.class == clz) {
+            return new NightDisplayCondition(this);
         }
         throw new RuntimeException("Unexpected Condition " + clz);
     }

src/com/android/settings/dashboard/conditional/NightDisplayCondition.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2016 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.dashboard.conditional;
+
+import android.graphics.drawable.Icon;
+
+import com.android.internal.app.NightDisplayController;
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.Utils;
+import com.android.settings.display.NightDisplaySettings;
+
+public final class NightDisplayCondition extends Condition
+        implements NightDisplayController.Callback {
+
+    private NightDisplayController mController;
+
+    NightDisplayCondition(ConditionManager manager) {
+        super(manager);
+        mController = new NightDisplayController(manager.getContext());
+        mController.setListener(this);
+    }
+
+    @Override
+    public int getMetricsConstant() {
+        return MetricsEvent.SETTINGS_CONDITION_NIGHT_DISPLAY;
+    }
+
+    @Override
+    public Icon getIcon() {
+        return Icon.createWithResource(mManager.getContext(), R.drawable.ic_settings_night_display);
+    }
+
+    @Override
+    public CharSequence getTitle() {
+        return mManager.getContext().getString(R.string.condition_night_display_title);
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        return mManager.getContext().getString(R.string.condition_night_display_summary);
+    }
+
+    @Override
+    public CharSequence[] getActions() {
+        return new CharSequence[] { mManager.getContext().getString(R.string.condition_turn_off) };
+    }
+
+    @Override
+    public void onPrimaryClick() {
+        Utils.startWithFragment(mManager.getContext(), NightDisplaySettings.class.getName(), null,
+                null, 0, R.string.night_display_title, null);
+    }
+
+    @Override
+    public void onActionClick(int index) {
+        if (index == 0) {
+            mController.setActivated(false);
+        } else {
+            throw new IllegalArgumentException("Unexpected index " + index);
+        }
+    }
+
+    @Override
+    public void refreshState() {
+        setActive(mController.isActivated());
+    }
+
+    @Override
+    public void onActivated(boolean activated) {
+        refreshState();
+    }
+}

src/com/android/settings/display/NightDisplaySettings.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (C) 2016 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");