AOD: Use DOZE_SUSPEND screenstate when supported

Bug: 30876804
Bug: 33175018
Test: runtest -x packages/SystemUI/tests/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapterTest.java
Change-Id: If4d0cadced1f0ac3e737d78759820858b70081e6
diff --git a/packages/SystemUI/res/values/config.xml b/packages/SystemUI/res/values/config.xml
index 64cac3c..f67d921 100644
--- a/packages/SystemUI/res/values/config.xml
+++ b/packages/SystemUI/res/values/config.xml
@@ -209,9 +209,12 @@
     <!-- Set to true to enable the user switcher on the keyguard. -->
     <bool name="config_keyguardUserSwitcher">false</bool>
 
-    <!-- Doze: does this device support STATE_DOZE and STATE_DOZE_SUSPEND?  -->
+    <!-- Doze: does this device support STATE_DOZE?  -->
     <bool name="doze_display_state_supported">false</bool>
 
+    <!-- Doze: does this device support STATE_DOZE_SUSPEND?  -->
+    <bool name="doze_suspend_display_state_supported">false</bool>
+
     <!-- Doze: should the significant motion sensor be used as a pulse signal? -->
     <bool name="doze_pulse_on_significant_motion">false</bool>
 
diff --git a/packages/SystemUI/src/com/android/systemui/doze/DozeFactory.java b/packages/SystemUI/src/com/android/systemui/doze/DozeFactory.java
index ba8e54a..4d8323b 100644
--- a/packages/SystemUI/src/com/android/systemui/doze/DozeFactory.java
+++ b/packages/SystemUI/src/com/android/systemui/doze/DozeFactory.java
@@ -50,7 +50,8 @@
         WakeLock wakeLock = WakeLock.createPartial(context, "Doze");
 
         DozeMachine machine = new DozeMachine(
-                DozeScreenStatePreventingAdapter.wrapIfNeeded(dozeService, params),
+                DozeSuspendScreenStatePreventingAdapter.wrapIfNeeded(
+                        DozeScreenStatePreventingAdapter.wrapIfNeeded(dozeService, params), params),
                 config,
                 wakeLock);
         machine.setParts(new DozeMachine.Part[]{
diff --git a/packages/SystemUI/src/com/android/systemui/doze/DozeMachine.java b/packages/SystemUI/src/com/android/systemui/doze/DozeMachine.java
index f27521e..f498410 100644
--- a/packages/SystemUI/src/com/android/systemui/doze/DozeMachine.java
+++ b/packages/SystemUI/src/com/android/systemui/doze/DozeMachine.java
@@ -87,8 +87,9 @@
                 case DOZE:
                     return Display.STATE_OFF;
                 case DOZE_PULSING:
+                    return Display.STATE_DOZE;
                 case DOZE_AOD:
-                    return Display.STATE_DOZE; // TODO: use STATE_ON if appropriate.
+                    return Display.STATE_DOZE_SUSPEND;
                 default:
                     return Display.STATE_UNKNOWN;
             }
diff --git a/packages/SystemUI/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapter.java b/packages/SystemUI/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapter.java
new file mode 100644
index 0000000..1e06797
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapter.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.systemui.doze;
+
+import android.support.annotation.VisibleForTesting;
+import android.view.Display;
+
+import com.android.systemui.statusbar.phone.DozeParameters;
+
+/**
+ * Prevents usage of doze screen states on devices that don't support them.
+ */
+public class DozeSuspendScreenStatePreventingAdapter implements DozeMachine.Service {
+
+    private final DozeMachine.Service mInner;
+
+    @VisibleForTesting
+    DozeSuspendScreenStatePreventingAdapter(DozeMachine.Service inner) {
+        mInner = inner;
+    }
+
+    @Override
+    public void finish() {
+        mInner.finish();
+    }
+
+    @Override
+    public void setDozeScreenState(int state) {
+        if (state == Display.STATE_DOZE_SUSPEND) {
+            state = Display.STATE_DOZE;
+        }
+        mInner.setDozeScreenState(state);
+    }
+
+    @Override
+    public void requestWakeUp() {
+        mInner.requestWakeUp();
+    }
+
+    /**
+     * If the device supports the doze display state, return {@code inner}. Otherwise
+     * return a new instance of {@link DozeSuspendScreenStatePreventingAdapter} wrapping {@code inner}.
+     */
+    public static DozeMachine.Service wrapIfNeeded(DozeMachine.Service inner,
+            DozeParameters params) {
+        return isNeeded(params) ? new DozeSuspendScreenStatePreventingAdapter(inner) : inner;
+    }
+
+    private static boolean isNeeded(DozeParameters params) {
+        return !params.getDozeSuspendDisplayStateSupported();
+    }
+}
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeParameters.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeParameters.java
index 7b2e997..2a9de41 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeParameters.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/DozeParameters.java
@@ -80,6 +80,10 @@
         return getBoolean("doze.display.supported", R.bool.doze_display_state_supported);
     }
 
+    public boolean getDozeSuspendDisplayStateSupported() {
+        return mContext.getResources().getBoolean(R.bool.doze_suspend_display_state_supported);
+    }
+
     public int getPulseDuration(boolean pickup) {
         return getPulseInDuration(pickup) + getPulseVisibleDuration() + getPulseOutDuration();
     }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/doze/DozeMachineTest.java b/packages/SystemUI/tests/src/com/android/systemui/doze/DozeMachineTest.java
index cdbde5e..5771b28 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/doze/DozeMachineTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/doze/DozeMachineTest.java
@@ -228,7 +228,7 @@
 
         mMachine.requestState(DOZE_AOD);
 
-        assertEquals(Display.STATE_DOZE, mServiceFake.screenState);
+        assertEquals(Display.STATE_DOZE_SUSPEND, mServiceFake.screenState);
     }
 
     @Test
@@ -258,7 +258,7 @@
         mMachine.requestState(DOZE_AOD);
         mMachine.requestState(DOZE_REQUEST_PULSE);
 
-        assertEquals(Display.STATE_DOZE, mServiceFake.screenState);
+        assertEquals(Display.STATE_DOZE_SUSPEND, mServiceFake.screenState);
     }
 
     @Test
diff --git a/packages/SystemUI/tests/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapterTest.java b/packages/SystemUI/tests/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapterTest.java
new file mode 100644
index 0000000..2e3df2c
--- /dev/null
+++ b/packages/SystemUI/tests/src/com/android/systemui/doze/DozeSuspendScreenStatePreventingAdapterTest.java
@@ -0,0 +1,97 @@
+/*
+ * 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.doze;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertSame;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.support.test.filters.SmallTest;
+import android.view.Display;
+
+import com.android.systemui.statusbar.phone.DozeParameters;
+
+import org.junit.Before;
+import org.junit.Test;
+
+@SmallTest
+public class DozeSuspendScreenStatePreventingAdapterTest {
+
+    private DozeMachine.Service mInner;
+    private DozeSuspendScreenStatePreventingAdapter mWrapper;
+
+    @Before
+    public void setup() throws Exception {
+        mInner = mock(DozeMachine.Service.class);
+        mWrapper = new DozeSuspendScreenStatePreventingAdapter(mInner);
+    }
+
+    @Test
+    public void forwards_finish() throws Exception {
+        mWrapper.finish();
+        verify(mInner).finish();
+    }
+
+    @Test
+    public void forwards_setDozeScreenState_on() throws Exception {
+        mWrapper.setDozeScreenState(Display.STATE_ON);
+        verify(mInner).setDozeScreenState(Display.STATE_ON);
+    }
+
+    @Test
+    public void forwards_setDozeScreenState_off() throws Exception {
+        mWrapper.setDozeScreenState(Display.STATE_OFF);
+        verify(mInner).setDozeScreenState(Display.STATE_OFF);
+    }
+
+    @Test
+    public void forwards_setDozeScreenState_doze() throws Exception {
+        mWrapper.setDozeScreenState(Display.STATE_DOZE);
+        verify(mInner).setDozeScreenState(Display.STATE_DOZE);
+    }
+
+    @Test
+    public void forwards_setDozeScreenState_doze_suspend() throws Exception {
+        mWrapper.setDozeScreenState(Display.STATE_DOZE_SUSPEND);
+        verify(mInner).setDozeScreenState(Display.STATE_DOZE);
+    }
+
+    @Test
+    public void forwards_requestWakeUp() throws Exception {
+        mWrapper.requestWakeUp();
+        verify(mInner).requestWakeUp();
+    }
+
+    @Test
+    public void wrapIfNeeded_needed() throws Exception {
+        DozeParameters params = mock(DozeParameters.class);
+        when(params.getDozeSuspendDisplayStateSupported()).thenReturn(false);
+
+        assertEquals(DozeSuspendScreenStatePreventingAdapter.class,
+                DozeSuspendScreenStatePreventingAdapter.wrapIfNeeded(mInner, params).getClass());
+    }
+
+    @Test
+    public void wrapIfNeeded_not_needed() throws Exception {
+        DozeParameters params = mock(DozeParameters.class);
+        when(params.getDozeSuspendDisplayStateSupported()).thenReturn(true);
+
+        assertSame(mInner, DozeSuspendScreenStatePreventingAdapter.wrapIfNeeded(mInner, params));
+    }
+}
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