Merge "Added systemui controller to control system bars." into rvc-qpr-dev

4 files changed, 597 insertions, 0 deletions

diff --git a/packages/CarSystemUI/src/com/android/systemui/CarSystemUIModule.java b/packages/CarSystemUI/src/com/android/systemui/CarSystemUIModule.java
index 5bf989a971b9..496742680893 100644
--- a/packages/CarSystemUI/src/com/android/systemui/CarSystemUIModule.java
+++ b/packages/CarSystemUI/src/com/android/systemui/CarSystemUIModule.java
@@ -67,6 +67,8 @@ import com.android.systemui.statusbar.policy.ConfigurationController;
 import com.android.systemui.statusbar.policy.DeviceProvisionedController;
 import com.android.systemui.statusbar.policy.HeadsUpManager;
 import com.android.systemui.volume.VolumeDialogComponent;
+import com.android.systemui.wm.DisplayImeController;
+import com.android.systemui.wm.DisplaySystemBarsController;
 
 import javax.inject.Named;
 import javax.inject.Singleton;
@@ -97,6 +99,10 @@ public abstract class CarSystemUIModule {
                 groupManager, configurationController);
     }
 
+    @Binds
+    abstract DisplayImeController bindDisplayImeController(
+            DisplaySystemBarsController displaySystemBarsController);
+
     @Singleton
     @Provides
     @Named(LEAK_REPORT_EMAIL_NAME)
diff --git a/packages/CarSystemUI/src/com/android/systemui/wm/BarControlPolicy.java b/packages/CarSystemUI/src/com/android/systemui/wm/BarControlPolicy.java
new file mode 100644
index 000000000000..5f9665ff7632
--- /dev/null
+++ b/packages/CarSystemUI/src/com/android/systemui/wm/BarControlPolicy.java
@@ -0,0 +1,250 @@
+/*
+ * Copyright (C) 2020 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.wm;
+
+import android.car.settings.CarSettings;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.os.Handler;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.util.ArraySet;
+import android.util.Slog;
+import android.view.WindowInsets;
+
+import androidx.annotation.VisibleForTesting;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+/**
+ * Util class to load PolicyControl and allow for querying if a package matches immersive filters.
+ * Similar to {@link com.android.server.wm.PolicyControl}, but separate due to CarSystemUI needing
+ * to set its own policies for system bar visibilities.
+ *
+ * This forces immersive mode behavior for one or both system bars (based on a package
+ * list).
+ *
+ * Control by setting {@link Settings.Global#POLICY_CONTROL_AUTO} to one or more name-value pairs.
+ * e.g.
+ *   to force immersive mode everywhere:
+ *     "immersive.full=*"
+ *   to force hide status bars for com.package1 but not com.package2:
+ *     "immersive.status=com.package1,-com.package2"
+ *
+ * Separate multiple name-value pairs with ':'
+ *   e.g. "immersive.status=com.package:immersive.navigation=*"
+ */
+public class BarControlPolicy {
+
+    private static final String TAG = "BarControlPolicy";
+    private static final boolean DEBUG = false;
+
+    private static final String NAME_IMMERSIVE_FULL = "immersive.full";
+    private static final String NAME_IMMERSIVE_STATUS = "immersive.status";
+    private static final String NAME_IMMERSIVE_NAVIGATION = "immersive.navigation";
+
+    @VisibleForTesting
+    static String sSettingValue;
+    @VisibleForTesting
+    static Filter sImmersiveStatusFilter;
+    private static Filter sImmersiveNavigationFilter;
+
+    /** Loads values from the POLICY_CONTROL setting to set filters. */
+    static boolean reloadFromSetting(Context context) {
+        if (DEBUG) Slog.d(TAG, "reloadFromSetting()");
+        String value = null;
+        try {
+            value = Settings.Global.getStringForUser(context.getContentResolver(),
+                    CarSettings.Global.SYSTEM_BAR_VISIBILITY_OVERRIDE,
+                    UserHandle.USER_CURRENT);
+            if (sSettingValue == value || sSettingValue != null && sSettingValue.equals(value)) {
+                return false;
+            }
+            setFilters(value);
+            sSettingValue = value;
+        } catch (Throwable t) {
+            Slog.w(TAG, "Error loading policy control, value=" + value, t);
+            return false;
+        }
+        return true;
+    }
+
+    /** Used in testing to reset BarControlPolicy. */
+    @VisibleForTesting
+    static void reset() {
+        sSettingValue = null;
+        sImmersiveStatusFilter = null;
+        sImmersiveNavigationFilter = null;
+    }
+
+    /**
+     * Registers a content observer to listen to updates to the SYSTEM_BAR_VISIBILITY_OVERRIDE flag.
+     */
+    static void registerContentObserver(Context context, Handler handler, FilterListener listener) {
+        context.getContentResolver().registerContentObserver(
+                Settings.Global.getUriFor(CarSettings.Global.SYSTEM_BAR_VISIBILITY_OVERRIDE), false,
+                new ContentObserver(handler) {
+                    @Override
+                    public void onChange(boolean selfChange) {
+                        if (reloadFromSetting(context)) {
+                            listener.onFilterUpdated();
+                        }
+                    }
+                }, UserHandle.USER_ALL);
+    }
+
+    /**
+     * Returns bar visibilities based on POLICY_CONTROL_AUTO filters and window policies.
+     * @return int[], where the first value is the inset types that should be shown, and the second
+     *         is the inset types that should be hidden.
+     */
+    @WindowInsets.Type.InsetsType
+    static int[] getBarVisibilities(String packageName) {
+        int hideTypes = 0;
+        int showTypes = 0;
+        if (matchesStatusFilter(packageName)) {
+            hideTypes |= WindowInsets.Type.statusBars();
+        } else {
+            showTypes |= WindowInsets.Type.statusBars();
+        }
+        if (matchesNavigationFilter(packageName)) {
+            hideTypes |= WindowInsets.Type.navigationBars();
+        } else {
+            showTypes |= WindowInsets.Type.navigationBars();
+        }
+
+        return new int[] {showTypes, hideTypes};
+    }
+
+    private static boolean matchesStatusFilter(String packageName) {
+        return sImmersiveStatusFilter != null && sImmersiveStatusFilter.matches(packageName);
+    }
+
+    private static boolean matchesNavigationFilter(String packageName) {
+        return sImmersiveNavigationFilter != null
+                && sImmersiveNavigationFilter.matches(packageName);
+    }
+
+    private static void setFilters(String value) {
+        if (DEBUG) Slog.d(TAG, "setFilters: " + value);
+        sImmersiveStatusFilter = null;
+        sImmersiveNavigationFilter = null;
+        if (value != null) {
+            String[] nvps = value.split(":");
+            for (String nvp : nvps) {
+                int i = nvp.indexOf('=');
+                if (i == -1) continue;
+                String n = nvp.substring(0, i);
+                String v = nvp.substring(i + 1);
+                if (n.equals(NAME_IMMERSIVE_FULL)) {
+                    Filter f = Filter.parse(v);
+                    sImmersiveStatusFilter = sImmersiveNavigationFilter = f;
+                } else if (n.equals(NAME_IMMERSIVE_STATUS)) {
+                    Filter f = Filter.parse(v);
+                    sImmersiveStatusFilter = f;
+                } else if (n.equals(NAME_IMMERSIVE_NAVIGATION)) {
+                    Filter f = Filter.parse(v);
+                    sImmersiveNavigationFilter = f;
+                }
+            }
+        }
+        if (DEBUG) {
+            Slog.d(TAG, "immersiveStatusFilter: " + sImmersiveStatusFilter);
+            Slog.d(TAG, "immersiveNavigationFilter: " + sImmersiveNavigationFilter);
+        }
+    }
+
+    private static class Filter {
+        private static final String ALL = "*";
+
+        private final ArraySet<String> mWhitelist;
+        private final ArraySet<String> mBlacklist;
+
+        private Filter(ArraySet<String> whitelist, ArraySet<String> blacklist) {
+            mWhitelist = whitelist;
+            mBlacklist = blacklist;
+        }
+
+        boolean matches(String packageName) {
+            if (packageName == null) return false;
+            if (onBlacklist(packageName)) return false;
+            return onWhitelist(packageName);
+        }
+
+        private boolean onBlacklist(String packageName) {
+            return mBlacklist.contains(packageName) || mBlacklist.contains(ALL);
+        }
+
+        private boolean onWhitelist(String packageName) {
+            return mWhitelist.contains(ALL) || mWhitelist.contains(packageName);
+        }
+
+        void dump(PrintWriter pw) {
+            pw.print("Filter[");
+            dump("whitelist", mWhitelist, pw); pw.print(',');
+            dump("blacklist", mBlacklist, pw); pw.print(']');
+        }
+
+        private void dump(String name, ArraySet<String> set, PrintWriter pw) {
+            pw.print(name); pw.print("=(");
+            int n = set.size();
+            for (int i = 0; i < n; i++) {
+                if (i > 0) pw.print(',');
+                pw.print(set.valueAt(i));
+            }
+            pw.print(')');
+        }
+
+        @Override
+        public String toString() {
+            StringWriter sw = new StringWriter();
+            dump(new PrintWriter(sw, true));
+            return sw.toString();
+        }
+
+        // value = comma-delimited list of tokens, where token = (package name|*)
+        // e.g. "com.package1", or "com.android.systemui, com.android.keyguard" or "*"
+        static Filter parse(String value) {
+            if (value == null) return null;
+            ArraySet<String> whitelist = new ArraySet<String>();
+            ArraySet<String> blacklist = new ArraySet<String>();
+            for (String token : value.split(",")) {
+                token = token.trim();
+                if (token.startsWith("-") && token.length() > 1) {
+                    token = token.substring(1);
+                    blacklist.add(token);
+                } else {
+                    whitelist.add(token);
+                }
+            }
+            return new Filter(whitelist, blacklist);
+        }
+    }
+
+    /**
+     * Interface to listen for updates to the filter triggered by the content observer listening to
+     * the SYSTEM_BAR_VISIBILITY_OVERRIDE flag.
+     */
+    interface FilterListener {
+
+        /** Callback triggered when the content observer updates the filter. */
+        void onFilterUpdated();
+    }
+
+    private BarControlPolicy() {}
+}
diff --git a/packages/CarSystemUI/src/com/android/systemui/wm/DisplaySystemBarsController.java b/packages/CarSystemUI/src/com/android/systemui/wm/DisplaySystemBarsController.java
new file mode 100644
index 000000000000..a831464e7987
--- /dev/null
+++ b/packages/CarSystemUI/src/com/android/systemui/wm/DisplaySystemBarsController.java
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2020 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.wm;
+
+import android.os.Handler;
+import android.os.RemoteException;
+import android.util.ArraySet;
+import android.util.Slog;
+import android.util.SparseArray;
+import android.view.IDisplayWindowInsetsController;
+import android.view.InsetsController;
+import android.view.InsetsSourceControl;
+import android.view.InsetsState;
+import android.view.WindowInsets;
+
+import androidx.annotation.VisibleForTesting;
+
+import com.android.systemui.TransactionPool;
+import com.android.systemui.dagger.qualifiers.Main;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+/**
+ * Controller that maps between displays and {@link IDisplayWindowInsetsController} in order to
+ * give system bar control to SystemUI.
+ * {@link R.bool#config_remoteInsetsControllerControlsSystemBars} determines whether this controller
+ * takes control or not.
+ */
+@Singleton
+public class DisplaySystemBarsController extends DisplayImeController {
+
+    private static final String TAG = "DisplaySystemBarsController";
+
+    private SparseArray<PerDisplay> mPerDisplaySparseArray;
+
+    @Inject
+    public DisplaySystemBarsController(
+            SystemWindows syswin,
+            DisplayController displayController,
+            @Main Handler mainHandler,
+            TransactionPool transactionPool) {
+        super(syswin, displayController, mainHandler, transactionPool);
+    }
+
+    @Override
+    public void onDisplayAdded(int displayId) {
+        PerDisplay pd = new PerDisplay(displayId);
+        try {
+            mSystemWindows.mWmService.setDisplayWindowInsetsController(displayId, pd);
+        } catch (RemoteException e) {
+            Slog.w(TAG, "Unable to set insets controller on display " + displayId);
+        }
+        // Lazy loading policy control filters instead of during boot.
+        if (mPerDisplaySparseArray == null) {
+            mPerDisplaySparseArray = new SparseArray<>();
+            BarControlPolicy.reloadFromSetting(mSystemWindows.mContext);
+            BarControlPolicy.registerContentObserver(mSystemWindows.mContext, mHandler, () -> {
+                int size = mPerDisplaySparseArray.size();
+                for (int i = 0; i < size; i++) {
+                    mPerDisplaySparseArray.valueAt(i).modifyDisplayWindowInsets();
+                }
+            });
+        }
+        mPerDisplaySparseArray.put(displayId, pd);
+    }
+
+    @Override
+    public void onDisplayRemoved(int displayId) {
+        try {
+            mSystemWindows.mWmService.setDisplayWindowInsetsController(displayId, null);
+        } catch (RemoteException e) {
+            Slog.w(TAG, "Unable to remove insets controller on display " + displayId);
+        }
+        mPerDisplaySparseArray.remove(displayId);
+    }
+
+    @VisibleForTesting
+    class PerDisplay extends IDisplayWindowInsetsController.Stub {
+
+        int mDisplayId;
+        InsetsController mInsetsController;
+        InsetsState mInsetsState = new InsetsState();
+        String mPackageName;
+
+        PerDisplay(int displayId) {
+            mDisplayId = displayId;
+            mInsetsController = new InsetsController(
+                    new DisplaySystemBarsInsetsControllerHost(mHandler, this));
+        }
+
+        @Override
+        public void insetsChanged(InsetsState insetsState) {
+            if (mInsetsState.equals(insetsState)) {
+                return;
+            }
+            mInsetsState.set(insetsState, true /* copySources */);
+            mInsetsController.onStateChanged(insetsState);
+            if (mPackageName != null) {
+                modifyDisplayWindowInsets();
+            }
+        }
+
+        @Override
+        public void insetsControlChanged(InsetsState insetsState,
+                InsetsSourceControl[] activeControls) {
+            mInsetsController.onControlsChanged(activeControls);
+        }
+
+        @Override
+        public void hideInsets(@WindowInsets.Type.InsetsType int types, boolean fromIme) {
+            mInsetsController.hide(types);
+        }
+
+        @Override
+        public void showInsets(@WindowInsets.Type.InsetsType int types, boolean fromIme) {
+            mInsetsController.show(types);
+        }
+
+        @Override
+        public void topFocusedWindowChanged(String packageName) {
+            // If both package names are null or both package names are equal, return.
+            if (mPackageName == packageName
+                    || (mPackageName != null && mPackageName.equals(packageName))) {
+                return;
+            }
+            mPackageName = packageName;
+            modifyDisplayWindowInsets();
+        }
+
+        private void modifyDisplayWindowInsets() {
+            if (mPackageName == null) {
+                return;
+            }
+            int[] barVisibilities = BarControlPolicy.getBarVisibilities(mPackageName);
+            updateInsetsState(barVisibilities[0], /* visible= */ true);
+            updateInsetsState(barVisibilities[1], /* visible= */ false);
+            showInsets(barVisibilities[0], /* fromIme= */ false);
+            hideInsets(barVisibilities[1], /* fromIme= */ false);
+            try {
+                mSystemWindows.mWmService.modifyDisplayWindowInsets(mDisplayId, mInsetsState);
+            } catch (RemoteException e) {
+                Slog.w(TAG, "Unable to update window manager service.");
+            }
+        }
+
+        private void updateInsetsState(@WindowInsets.Type.InsetsType int types, boolean visible) {
+            ArraySet<Integer> internalTypes = InsetsState.toInternalType(types);
+            for (int i = internalTypes.size() - 1; i >= 0; i--) {
+                mInsetsState.getSource(internalTypes.valueAt(i)).setVisible(visible);
+            }
+        }
+    }
+}
diff --git a/packages/CarSystemUI/src/com/android/systemui/wm/DisplaySystemBarsInsetsControllerHost.java b/packages/CarSystemUI/src/com/android/systemui/wm/DisplaySystemBarsInsetsControllerHost.java
new file mode 100644
index 000000000000..2f8da44ba851
--- /dev/null
+++ b/packages/CarSystemUI/src/com/android/systemui/wm/DisplaySystemBarsInsetsControllerHost.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2020 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.wm;
+
+import android.annotation.NonNull;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.RemoteException;
+import android.util.Log;
+import android.view.IDisplayWindowInsetsController;
+import android.view.InsetsController;
+import android.view.InsetsState;
+import android.view.SurfaceControl;
+import android.view.SyncRtSurfaceTransactionApplier;
+import android.view.WindowInsets;
+import android.view.WindowInsetsAnimation;
+import android.view.WindowInsetsController;
+import android.view.inputmethod.InputMethodManager;
+
+import java.util.List;
+
+/**
+ * Implements {@link InsetsController.Host} for usage by
+ * {@link DisplaySystemBarsController.PerDisplay} instances in {@link DisplaySystemBarsController}.
+ * @hide
+ */
+public class DisplaySystemBarsInsetsControllerHost implements InsetsController.Host {
+
+    private static final String TAG = DisplaySystemBarsInsetsControllerHost.class.getSimpleName();
+
+    private final Handler mHandler;
+    private final IDisplayWindowInsetsController mController;
+    private final float[] mTmpFloat9 = new float[9];
+
+    public DisplaySystemBarsInsetsControllerHost(
+            Handler handler, IDisplayWindowInsetsController controller) {
+        mHandler = handler;
+        mController = controller;
+    }
+
+    @Override
+    public Handler getHandler() {
+        return mHandler;
+    }
+
+    @Override
+    public void notifyInsetsChanged() {
+        // no-op
+    }
+
+    @Override
+    public void dispatchWindowInsetsAnimationPrepare(@NonNull WindowInsetsAnimation animation) {
+        // no-op
+    }
+
+    @Override
+    public WindowInsetsAnimation.Bounds dispatchWindowInsetsAnimationStart(
+            @NonNull WindowInsetsAnimation animation,
+            @NonNull WindowInsetsAnimation.Bounds bounds) {
+        return null;
+    }
+
+    @Override
+    public WindowInsets dispatchWindowInsetsAnimationProgress(@NonNull WindowInsets insets,
+            @NonNull List<WindowInsetsAnimation> runningAnimations) {
+        return null;
+    }
+
+    @Override
+    public void dispatchWindowInsetsAnimationEnd(@NonNull WindowInsetsAnimation animation) {
+        // no-op
+    }
+
+    @Override
+    public void applySurfaceParams(final SyncRtSurfaceTransactionApplier.SurfaceParams... params) {
+        for (int i = params.length - 1; i >= 0; i--) {
+            SyncRtSurfaceTransactionApplier.applyParams(
+                    new SurfaceControl.Transaction(), params[i], mTmpFloat9);
+        }
+
+    }
+
+    @Override
+    public void updateCompatSysUiVisibility(
+            @InsetsState.InternalInsetsType int type, boolean visible, boolean hasControl) {
+        // no-op
+    }
+
+    @Override
+    public void onInsetsModified(InsetsState insetsState) {
+        try {
+            mController.insetsChanged(insetsState);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Failed to send insets to controller");
+        }
+    }
+
+    @Override
+    public boolean hasAnimationCallbacks() {
+        return false;
+    }
+
+    @Override
+    public void setSystemBarsAppearance(
+            @WindowInsetsController.Appearance int appearance,
+            @WindowInsetsController.Appearance int mask) {
+        // no-op
+    }
+
+    @Override
+    public @WindowInsetsController.Appearance int getSystemBarsAppearance() {
+        return 0;
+    }
+
+    @Override
+    public void setSystemBarsBehavior(@WindowInsetsController.Behavior int behavior) {
+        // no-op
+    }
+
+    @Override
+    public @WindowInsetsController.Behavior int getSystemBarsBehavior() {
+        return 0;
+    }
+
+    @Override
+    public void releaseSurfaceControlFromRt(SurfaceControl surfaceControl) {
+        surfaceControl.release();
+    }
+
+    @Override
+    public void addOnPreDrawRunnable(Runnable r) {
+        mHandler.post(r);
+    }
+
+    @Override
+    public void postInsetsAnimationCallback(Runnable r) {
+        mHandler.post(r);
+    }
+
+    @Override
+    public InputMethodManager getInputMethodManager() {
+        return null;
+    }
+
+    @Override
+    public String getRootViewTitle() {
+        return null;
+    }
+
+    @Override
+    public int dipToPx(int dips) {
+        return 0;
+    }
+
+    @Override
+    public IBinder getWindowToken() {
+        return null;
+    }
+}