Merge "Move SystemGestureExclusionListenerCompat.java from sysui to launcher" into main

packages/SystemUI/shared/src/com/android/systemui/shared/system/SystemGestureExclusionListenerCompat.java

-/**
- * Copyright (C) 2019 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.shared.system;
-
-import android.graphics.Region;
-import android.os.RemoteException;
-import android.util.Log;
-import android.view.ISystemGestureExclusionListener;
-import android.view.WindowManagerGlobal;
-
-/**
- * Utility class to listen for exclusion rect changes.
- */
-public abstract class SystemGestureExclusionListenerCompat {
-
-    private static final String TAG = "SGEListenerCompat";
-
-    private final int mDisplayId;
-
-    private ISystemGestureExclusionListener mGestureExclusionListener =
-            new ISystemGestureExclusionListener.Stub() {
-                @Override
-                public void onSystemGestureExclusionChanged(int displayId,
-                        Region systemGestureExclusion, Region unrestrictedOrNull) {
-                    if (displayId == mDisplayId) {
-                        Region unrestricted = (unrestrictedOrNull == null)
-                                ? systemGestureExclusion : unrestrictedOrNull;
-                        onExclusionChanged(systemGestureExclusion, unrestricted);
-                    }
-                }
-            };
-    private boolean mRegistered;
-
-    public SystemGestureExclusionListenerCompat(int displayId) {
-        mDisplayId = displayId;
-    }
-
-    /**
-     * Called when the exclusion region has changed.
-     *
-     * TODO: remove, once all subclasses have migrated to
-     *       {@link #onExclusionChanged(Region, Region)}.
-     */
-    public abstract void onExclusionChanged(Region systemGestureExclusion);
-
-    /**
-     * Called when the exclusion region has changed.
-     *
-     * @param systemGestureExclusion the system gesture exclusion to be applied
-     * @param systemGestureExclusionUnrestricted what would be the system gesture exclusion, if
-     *           there were no restrictions being applied. For logging purposes only.
-     *
-     */
-    public void onExclusionChanged(Region systemGestureExclusion,
-            Region systemGestureExclusionUnrestricted) {
-        // TODO: make abstract, once all subclasses have migrated away from
-        //       onExclusionChanged(Region)
-        onExclusionChanged(systemGestureExclusion);
-    }
-
-    /**
-     * Registers the listener for getting exclusion rect changes.
-     */
-    public void register() {
-        if (!mRegistered) {
-            try {
-                WindowManagerGlobal.getWindowManagerService()
-                        .registerSystemGestureExclusionListener(
-                                mGestureExclusionListener, mDisplayId);
-                mRegistered = true;
-            } catch (RemoteException e) {
-                Log.e(TAG, "Failed to register window manager callbacks", e);
-            }
-        }
-    }
-
-    /**
-     * Unregisters the receiver if previously registered
-     */
-    public void unregister() {
-        if (mRegistered) {
-            try {
-                WindowManagerGlobal.getWindowManagerService()
-                        .unregisterSystemGestureExclusionListener(
-                                mGestureExclusionListener, mDisplayId);
-                mRegistered = false;
-            } catch (RemoteException e) {
-                Log.e(TAG, "Failed to unregister window manager callbacks", e);
-            }
-        }
-    }
-}