diff --git a/packages/SystemUI/shared/src/com/android/systemui/shared/system/SystemGestureExclusionListenerCompat.java b/packages/SystemUI/shared/src/com/android/systemui/shared/system/SystemGestureExclusionListenerCompat.java new file mode 100644 index 0000000000000..9fdecfbd44a0b --- /dev/null +++ b/packages/SystemUI/shared/src/com/android/systemui/shared/system/SystemGestureExclusionListenerCompat.java @@ -0,0 +1,85 @@ +/** + * 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) { + if (displayId == mDisplayId) { + onExclusionChanged(systemGestureExclusion); + } + } + }; + private boolean mRegistered; + + public SystemGestureExclusionListenerCompat(int displayId) { + mDisplayId = displayId; + } + + /** + * Called when the exclusion region has changed + */ + public abstract void onExclusionChanged(Region 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); + } + } + } +}