Merge "Added device posture controller to SysUI." into sc-v2-dev am: c7f30fcd0e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15346903

Change-Id: I49cf597ac5644cc7796299533beea9e525edbe04

packages/SystemUI/src/com/android/systemui/statusbar/policy/DevicePostureController.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2021 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.statusbar.policy;
+
+import static com.android.systemui.statusbar.policy.DevicePostureController.Callback;
+
+import android.annotation.IntDef;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+/**
+ * Listener for device posture changes. This can be used to query the current posture, or register
+ * for events when it changes.
+ */
+public interface DevicePostureController extends CallbackController<Callback> {
+    @IntDef(prefix = {"DEVICE_POSTURE_"}, value = {
+            DEVICE_POSTURE_UNKNOWN,
+            DEVICE_POSTURE_CLOSED,
+            DEVICE_POSTURE_HALF_OPENED,
+            DEVICE_POSTURE_OPENED,
+            DEVICE_POSTURE_FLIPPED
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    @interface DevicePostureInt {}
+
+    // NOTE: These constants **must** match those defined for Jetpack Sidecar. This is because we
+    // use the Device State -> Jetpack Posture map in DevicePostureControllerImpl to translate
+    // between the two.
+    int DEVICE_POSTURE_UNKNOWN = 0;
+    int DEVICE_POSTURE_CLOSED = 1;
+    int DEVICE_POSTURE_HALF_OPENED = 2;
+    int DEVICE_POSTURE_OPENED = 3;
+    int DEVICE_POSTURE_FLIPPED = 4;
+
+    /** Return the current device posture. */
+    @DevicePostureInt int getDevicePosture();
+
+    /** Callback to be notified about device posture changes. */
+    interface Callback {
+        /** Called when the posture changes. */
+        void onPostureChanged(@DevicePostureInt int posture);
+    }
+}

packages/SystemUI/src/com/android/systemui/statusbar/policy/DevicePostureControllerImpl.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2021 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.statusbar.policy;
+
+import android.content.Context;
+import android.hardware.devicestate.DeviceStateManager;
+import android.util.SparseIntArray;
+
+import androidx.annotation.NonNull;
+
+import com.android.internal.R;
+import com.android.systemui.dagger.SysUISingleton;
+import com.android.systemui.dagger.qualifiers.Main;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executor;
+
+import javax.inject.Inject;
+
+/** Implementation of {@link DevicePostureController} using the DeviceStateManager. */
+@SysUISingleton
+public class DevicePostureControllerImpl implements DevicePostureController {
+    private final List<Callback> mListeners = new ArrayList<>();
+    private int mCurrentDevicePosture = DEVICE_POSTURE_UNKNOWN;
+
+    private final SparseIntArray mDeviceStateToPostureMap = new SparseIntArray();
+
+    @Inject
+    public DevicePostureControllerImpl(
+            Context context, DeviceStateManager deviceStateManager, @Main Executor executor) {
+        // Most of this is borrowed from WindowManager/Jetpack/DeviceStateManagerPostureProducer.
+        // Using the sidecar/extension libraries directly brings in a new dependency that it'd be
+        // good to avoid (along with the fact that sidecar is deprecated, and extensions isn't fully
+        // ready yet), and we'd have to make our own layer over the sidecar library anyway to easily
+        // allow the implementation to change, so it was easier to just interface with
+        // DeviceStateManager directly.
+        String[] deviceStatePosturePairs = context.getResources()
+                .getStringArray(R.array.config_device_state_postures);
+        for (String deviceStatePosturePair : deviceStatePosturePairs) {
+            String[] deviceStatePostureMapping = deviceStatePosturePair.split(":");
+            if (deviceStatePostureMapping.length != 2) {
+                continue;
+            }
+
+            int deviceState;
+            int posture;
+            try {
+                deviceState = Integer.parseInt(deviceStatePostureMapping[0]);
+                posture = Integer.parseInt(deviceStatePostureMapping[1]);
+            } catch (NumberFormatException e) {
+                continue;
+            }
+
+            mDeviceStateToPostureMap.put(deviceState, posture);
+        }
+
+        deviceStateManager.registerCallback(executor, state -> {
+            mCurrentDevicePosture =
+                    mDeviceStateToPostureMap.get(state, DEVICE_POSTURE_UNKNOWN);
+
+            mListeners.forEach(l -> l.onPostureChanged(mCurrentDevicePosture));
+        });
+    }
+
+    @Override
+    public void addCallback(@NonNull Callback listener) {
+        mListeners.add(listener);
+    }
+
+    @Override
+    public void removeCallback(@NonNull Callback listener) {
+        mListeners.remove(listener);
+    }
+
+    @Override
+    public int getDevicePosture() {
+        return mCurrentDevicePosture;
+    }
+}

packages/SystemUI/src/com/android/systemui/statusbar/policy/dagger/StatusBarPolicyModule.java

@@ -28,6 +28,8 @@ import com.android.systemui.statusbar.policy.CastController;
 import com.android.systemui.statusbar.policy.CastControllerImpl;
 import com.android.systemui.statusbar.policy.DeviceControlsController;
 import com.android.systemui.statusbar.policy.DeviceControlsControllerImpl;
+import com.android.systemui.statusbar.policy.DevicePostureController;
+import com.android.systemui.statusbar.policy.DevicePostureControllerImpl;
 import com.android.systemui.statusbar.policy.ExtensionController;
 import com.android.systemui.statusbar.policy.ExtensionControllerImpl;
 import com.android.systemui.statusbar.policy.FlashlightController;
@@ -129,6 +131,11 @@ public interface StatusBarPolicyModule {
     NetworkController.AccessPointController provideAccessPointController(
             AccessPointControllerImpl accessPointControllerImpl);
 
+    /** */
+    @Binds
+    DevicePostureController provideDevicePostureController(
+            DevicePostureControllerImpl devicePostureControllerImpl);
+
     /** */
     @SysUISingleton
     @Provides