/*
 * 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 android.server.wm.overlay;

import static android.server.wm.overlay.Components.OverlayActivity.EXTRA_OPACITY;
import static android.server.wm.overlay.Components.OverlayActivity.EXTRA_TOKEN;
import static android.server.wm.overlay.Components.OverlayActivity.EXTRA_TOKEN_RECEIVER;
import static android.server.wm.overlay.Components.OverlayActivity.EXTRA_TOUCHABLE;
import static android.server.wm.overlay.UntrustedTouchTestService.BACKGROUND_COLOR;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.view.View;
import android.view.Window;
import android.view.WindowManager.LayoutParams;

import androidx.annotation.Nullable;

/** This is an activity for which android:windowIsTranslucent is true. */
public class OverlayActivity extends Activity {
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        View view = new View(this);
        view.setBackgroundColor(BACKGROUND_COLOR);
        setContentView(view);
        Window window = getWindow();
        Intent intent = getIntent();
        window.getAttributes().alpha = intent.getFloatExtra(EXTRA_OPACITY, 1f);
        if (!intent.getBooleanExtra(EXTRA_TOUCHABLE, false)) {
            window.addFlags(LayoutParams.FLAG_NOT_TOUCHABLE);
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        ResultReceiver receiver = getIntent().getParcelableExtra(EXTRA_TOKEN_RECEIVER);
        if (receiver != null) {
            // The token field is set as part of resuming the activity (after onResume()), so
            // posting a runnable to the same thread guarantees that it gets executed when the token
            // is set.
            getWindow().getDecorView().post(() -> {
                Bundle bundle = new Bundle();
                bundle.putBinder(EXTRA_TOKEN, getWindow().getAttributes().token);
                receiver.send(0, bundle);
            });
        }
    }


}