Support wallpapers in AoD

Such wallpaper has to define supportsAmbientMode,
and set it to true on its android.service.wallpaper
meta data.

Also introduces WallpaperService.Engine#onAmbientModeChanged
to notify a live wallpaper that the display state has changed.

Change-Id: I49e846069a698b3cc3bb6e7cda98172920eaae4c
Bug: 64155983
Test: runtest -x frameworks/base/packages/SystemUI/tests/src/com/android/systemui/doze/DozeWallpaperStateTest.java
Test: runtest -x frameworks/base/tests/Internal/src/android/app/WallpaperInfoTest.java
Test: runtest -x frameworks/base/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java
Test: set AoD wallpaper, go to aod, lock screen, launcher
Test: set regular wallpaper, go to aod, lock screen, launcher

6 files changed, 195 insertions, 0 deletions

diff --git a/tests/Internal/Android.mk b/tests/Internal/Android.mk
index 73181ec36e17..b69e3e4fdd4b 100644
--- a/tests/Internal/Android.mk
+++ b/tests/Internal/Android.mk
@@ -14,6 +14,7 @@ LOCAL_STATIC_JAVA_LIBRARIES := junit \
     android-support-test \
     mockito-target-minus-junit4
 
+LOCAL_JAVA_RESOURCE_DIRS := res
 LOCAL_CERTIFICATE := platform
 
 LOCAL_PACKAGE_NAME := InternalTests
diff --git a/tests/Internal/AndroidManifest.xml b/tests/Internal/AndroidManifest.xml
index a2c95fbbfc0b..e5a56949fe4e 100644
--- a/tests/Internal/AndroidManifest.xml
+++ b/tests/Internal/AndroidManifest.xml
@@ -18,8 +18,24 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="com.android.internal.tests">
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.BIND_WALLPAPER" />
     <application>
         <uses-library android:name="android.test.runner" />
+
+        <service android:name="stub.DummyWallpaperService"
+                 android:enabled="true"
+                 android:directBootAware="true"
+                 android:label="Dummy wallpaper"
+                 android:permission="android.permission.BIND_WALLPAPER">
+
+            <intent-filter>
+                <action android:name="android.service.wallpaper.WallpaperService" />
+            </intent-filter>
+
+            <!-- Link to XML that defines the wallpaper info. -->
+            <meta-data android:name="android.service.wallpaper"
+                       android:resource="@xml/livewallpaper" />
+        </service>
     </application>
 
     <instrumentation android:name="android.support.test.runner.AndroidJUnitRunner"
diff --git a/tests/Internal/res/xml/livewallpaper.xml b/tests/Internal/res/xml/livewallpaper.xml
new file mode 100644
index 000000000000..dbb0e4761cba
--- /dev/null
+++ b/tests/Internal/res/xml/livewallpaper.xml
@@ -0,0 +1,20 @@
+<?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
+  -->
+<wallpaper
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
+    androidprv:supportsAmbientMode="true"/>
\ No newline at end of file
diff --git a/tests/Internal/src/android/app/WallpaperInfoTest.java b/tests/Internal/src/android/app/WallpaperInfoTest.java
new file mode 100644
index 000000000000..9d26270fb96a
--- /dev/null
+++ b/tests/Internal/src/android/app/WallpaperInfoTest.java
@@ -0,0 +1,68 @@
+/*
+ * 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 android.app;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.os.Parcel;
+import android.service.wallpaper.WallpaperService;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.List;
+
+/**
+ * Tests for hidden WallpaperInfo methods.
+ */
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class WallpaperInfoTest {
+
+    @Test
+    public void testSupportsAmbientMode() throws Exception {
+        Context context = InstrumentationRegistry.getTargetContext();
+
+        Intent intent = new Intent(WallpaperService.SERVICE_INTERFACE);
+        intent.setPackage("com.android.internal.tests");
+        PackageManager pm = context.getPackageManager();
+        List<ResolveInfo> result = pm.queryIntentServices(intent, PackageManager.GET_META_DATA);
+        assertEquals(1, result.size());
+        ResolveInfo info = result.get(0);
+        WallpaperInfo wallpaperInfo = new WallpaperInfo(context, info);
+
+        // Defined as true in the XML
+        assertTrue("supportsAmbientMode should be true, as defined in the XML.",
+                wallpaperInfo.getSupportsAmbientMode());
+        Parcel parcel = Parcel.obtain();
+        wallpaperInfo.writeToParcel(parcel, 0 /* flags */);
+        parcel.setDataPosition(0);
+        WallpaperInfo fromParcel = WallpaperInfo.CREATOR.createFromParcel(parcel);
+        assertTrue("supportsAmbientMode should have been restored from parcelable",
+                fromParcel.getSupportsAmbientMode());
+        parcel.recycle();
+    }
+}
+
diff --git a/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java b/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java
new file mode 100644
index 000000000000..f7ce2c72d37e
--- /dev/null
+++ b/tests/Internal/src/android/service/wallpaper/WallpaperServiceTest.java
@@ -0,0 +1,61 @@
+/*
+ * 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 android.service.wallpaper;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import android.support.test.filters.SmallTest;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+@SmallTest
+@RunWith(JUnit4.class)
+public class WallpaperServiceTest {
+
+    @Test
+    public void testDeliversAmbientModeChanged() {
+        int[] ambientModeChangedCount = {0};
+        WallpaperService service = new WallpaperService() {
+            @Override
+            public Engine onCreateEngine() {
+                return new Engine() {
+                    @Override
+                    public void onAmbientModeChanged(boolean inAmbientMode) {
+                        ambientModeChangedCount[0]++;
+                    }
+                };
+            }
+        };
+        WallpaperService.Engine engine = service.onCreateEngine();
+        engine.setCreated(true);
+
+        engine.doAmbientModeChanged(false);
+        assertFalse("ambient mode should be false", engine.isInAmbientMode());
+        assertEquals("onAmbientModeChanged should have been called",
+                ambientModeChangedCount[0], 1);
+
+        engine.doAmbientModeChanged(true);
+        assertTrue("ambient mode should be false", engine.isInAmbientMode());
+        assertEquals("onAmbientModeChanged should have been called",
+                ambientModeChangedCount[0], 2);
+    }
+
+}
diff --git a/tests/Internal/src/stub/DummyWallpaperService.java b/tests/Internal/src/stub/DummyWallpaperService.java
new file mode 100644
index 000000000000..084c036bea26
--- /dev/null
+++ b/tests/Internal/src/stub/DummyWallpaperService.java
@@ -0,0 +1,29 @@
+/*
+ * 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 stub;
+
+import android.service.wallpaper.WallpaperService;
+
+/**
+ * Dummy wallpaper service only for test purposes, won't draw anything.
+ */
+public class DummyWallpaperService extends WallpaperService {
+    @Override
+    public Engine onCreateEngine() {
+        return new Engine();
+    }
+}