/*
 * 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.screenshot;

import static android.provider.DeviceConfig.NAMESPACE_SYSTEMUI;
import static android.view.View.VISIBLE;
import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;

import static com.android.internal.config.sysui.SystemUiDeviceConfigFlags.SCREENSHOT_SCROLLING_ENABLED;
import static com.android.systemui.statusbar.phone.StatusBar.SYSTEM_DIALOG_REASON_SCREENSHOT;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ValueAnimator;
import android.annotation.Nullable;
import android.annotation.SuppressLint;
import android.app.ActivityManager;
import android.app.ActivityOptions;
import android.app.Notification;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Insets;
import android.graphics.Outline;
import android.graphics.PixelFormat;
import android.graphics.PointF;
import android.graphics.Rect;
import android.graphics.Region;
import android.graphics.drawable.Icon;
import android.media.MediaActionSound;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.PowerManager;
import android.os.RemoteException;
import android.os.UserHandle;
import android.provider.DeviceConfig;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.MathUtils;
import android.util.Slog;
import android.view.Display;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.SurfaceControl;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewOutlineProvider;
import android.view.ViewTreeObserver;
import android.view.WindowManager;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import android.widget.FrameLayout;
import android.widget.HorizontalScrollView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;

import com.android.systemui.R;
import com.android.systemui.dagger.qualifiers.Main;
import com.android.systemui.shared.system.ActivityManagerWrapper;
import com.android.systemui.statusbar.phone.StatusBar;

import java.util.List;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.function.Consumer;

import javax.inject.Inject;
import javax.inject.Singleton;

import dagger.Lazy;

/**
 * Class for handling device screen shots
 */
@Singleton
public class GlobalScreenshot implements ViewTreeObserver.OnComputeInternalInsetsListener {

    /**
     * POD used in the AsyncTask which saves an image in the background.
     */
    static class SaveImageInBackgroundData {
        public Bitmap image;
        public Uri imageUri;
        public Consumer<Uri> finisher;
        public GlobalScreenshot.ActionsReadyListener mActionsReadyListener;
        public int errorMsgResId;
        public boolean createDeleteAction;

        void clearImage() {
            image = null;
            imageUri = null;
        }
    }

    abstract static class ActionsReadyListener {
        abstract void onActionsReady(Uri imageUri, List<Notification.Action> smartActions,
                List<Notification.Action> actions);
    }

    // These strings are used for communicating the action invoked to
    // ScreenshotNotificationSmartActionsProvider.
    static final String EXTRA_ACTION_TYPE = "android:screenshot_action_type";
    static final String EXTRA_ID = "android:screenshot_id";
    static final String ACTION_TYPE_DELETE = "Delete";
    static final String ACTION_TYPE_SHARE = "Share";
    static final String ACTION_TYPE_EDIT = "Edit";
    static final String EXTRA_SMART_ACTIONS_ENABLED = "android:smart_actions_enabled";
    static final String EXTRA_ACTION_INTENT = "android:screenshot_action_intent";

    static final String SCREENSHOT_URI_ID = "android:screenshot_uri_id";
    static final String EXTRA_CANCEL_NOTIFICATION = "android:screenshot_cancel_notification";
    static final String EXTRA_DISALLOW_ENTER_PIP = "android:screenshot_disallow_enter_pip";

    private static final String TAG = "GlobalScreenshot";

    private static final long SCREENSHOT_FLASH_IN_DURATION_MS = 133;
    private static final long SCREENSHOT_FLASH_OUT_DURATION_MS = 217;
    private static final long SCREENSHOT_TO_CORNER_X_DURATION_MS = 234;
    private static final long SCREENSHOT_TO_CORNER_Y_DURATION_MS = 500;
    private static final long SCREENSHOT_TO_CORNER_SCALE_DURATION_MS = 234;
    private static final float ROUNDED_CORNER_RADIUS = .05f;
    private static final long SCREENSHOT_CORNER_TIMEOUT_MILLIS = 6000;
    private static final int MESSAGE_CORNER_TIMEOUT = 2;

    private final ScreenshotNotificationsController mNotificationsController;

    private final Context mContext;
    private final WindowManager mWindowManager;
    private final WindowManager.LayoutParams mWindowLayoutParams;
    private final Display mDisplay;
    private final DisplayMetrics mDisplayMetrics;

    private final View mScreenshotLayout;
    private final ScreenshotSelectorView mScreenshotSelectorView;
    private final ImageView mBackgroundView;
    private final ImageView mScreenshotView;
    private final ImageView mScreenshotFlash;
    private final HorizontalScrollView mActionsContainer;
    private final LinearLayout mActionsView;
    private final ImageView mBackgroundProtection;
    private final FrameLayout mDismissButton;

    private Bitmap mScreenBitmap;
    private Animator mScreenshotAnimation;

    private float mScreenshotOffsetXPx;
    private float mScreenshotOffsetYPx;
    private float mScreenshotHeightPx;
    private float mDismissButtonSize;
    private float mCornerSizeX;

    private AsyncTask<Void, Void, Void> mSaveInBgTask;

    private MediaActionSound mCameraSound;

    // standard material ease
    private final Interpolator mFastOutSlowIn;

    private final Handler mScreenshotHandler = new Handler(Looper.getMainLooper()) {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MESSAGE_CORNER_TIMEOUT:
                    GlobalScreenshot.this.clearScreenshot("timeout");
                    break;
                default:
                    break;
            }
        }
    };

    /**
     * @param context everything needs a context :(
     */
    @Inject
    public GlobalScreenshot(
            Context context, @Main Resources resources, LayoutInflater layoutInflater,
            ScreenshotNotificationsController screenshotNotificationsController) {
        mContext = context;
        mNotificationsController = screenshotNotificationsController;

        // Inflate the screenshot layout
        mScreenshotLayout = layoutInflater.inflate(R.layout.global_screenshot, null);
        mBackgroundView = mScreenshotLayout.findViewById(R.id.global_screenshot_background);
        mScreenshotView = mScreenshotLayout.findViewById(R.id.global_screenshot);
        mScreenshotView.setClipToOutline(true);
        mScreenshotView.setOutlineProvider(new ViewOutlineProvider() {
            @Override
            public void getOutline(View view, Outline outline) {
                outline.setRoundRect(new Rect(0, 0, view.getWidth(), view.getHeight()),
                        ROUNDED_CORNER_RADIUS * view.getWidth());
            }
        });

        mActionsContainer = mScreenshotLayout.findViewById(
                R.id.global_screenshot_actions_container);
        mActionsView = mScreenshotLayout.findViewById(R.id.global_screenshot_actions);
        mBackgroundProtection = mScreenshotLayout.findViewById(
                R.id.global_screenshot_actions_background);
        mDismissButton = mScreenshotLayout.findViewById(R.id.global_screenshot_dismiss_button);
        mDismissButton.setOnClickListener(view -> clearScreenshot("dismiss_button"));

        mScreenshotFlash = mScreenshotLayout.findViewById(R.id.global_screenshot_flash);
        mScreenshotSelectorView = mScreenshotLayout.findViewById(R.id.global_screenshot_selector);
        mScreenshotLayout.setFocusable(true);
        mScreenshotSelectorView.setFocusable(true);
        mScreenshotSelectorView.setFocusableInTouchMode(true);
        mScreenshotView.setPivotX(0);
        mScreenshotView.setPivotY(0);

        // Setup the window that we are going to use
        mWindowLayoutParams = new WindowManager.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT, 0, 0,
                WindowManager.LayoutParams.TYPE_SCREENSHOT,
                WindowManager.LayoutParams.FLAG_FULLSCREEN
                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                        | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                        | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
                        | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED,
                PixelFormat.TRANSLUCENT);
        mWindowLayoutParams.setTitle("ScreenshotAnimation");
        mWindowLayoutParams.layoutInDisplayCutoutMode = LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
        mWindowLayoutParams.setFitInsetsTypes(0 /* types */);
        mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        mDisplay = mWindowManager.getDefaultDisplay();
        mDisplayMetrics = new DisplayMetrics();
        mDisplay.getRealMetrics(mDisplayMetrics);

        mScreenshotOffsetXPx = resources.getDimensionPixelSize(R.dimen.screenshot_offset_x);
        mScreenshotOffsetYPx = resources.getDimensionPixelSize(R.dimen.screenshot_offset_y);
        mScreenshotHeightPx =
                resources.getDimensionPixelSize(R.dimen.screenshot_action_container_offset_y);
        mDismissButtonSize = resources.getDimensionPixelSize(
                R.dimen.screenshot_dismiss_button_tappable_size);
        mCornerSizeX = resources.getDimensionPixelSize(R.dimen.global_screenshot_x_scale);

        mFastOutSlowIn =
                AnimationUtils.loadInterpolator(mContext, android.R.interpolator.fast_out_slow_in);

        // Setup the Camera shutter sound
        mCameraSound = new MediaActionSound();
        mCameraSound.load(MediaActionSound.SHUTTER_CLICK);
    }

    @Override // ViewTreeObserver.OnComputeInternalInsetsListener
    public void onComputeInternalInsets(ViewTreeObserver.InternalInsetsInfo inoutInfo) {
        inoutInfo.setTouchableInsets(ViewTreeObserver.InternalInsetsInfo.TOUCHABLE_INSETS_REGION);
        Region touchRegion = new Region();

        Rect screenshotRect = new Rect();
        mScreenshotView.getBoundsOnScreen(screenshotRect);
        touchRegion.op(screenshotRect, Region.Op.UNION);
        Rect actionsRect = new Rect();
        mActionsContainer.getBoundsOnScreen(actionsRect);
        touchRegion.op(actionsRect, Region.Op.UNION);
        Rect dismissRect = new Rect();
        mDismissButton.getBoundsOnScreen(dismissRect);
        touchRegion.op(dismissRect, Region.Op.UNION);

        inoutInfo.touchableRegion.set(touchRegion);
    }

    /**
     * Creates a new worker thread and saves the screenshot to the media store.
     */
    private void saveScreenshotInWorkerThread(
            Consumer<Uri> finisher, @Nullable ActionsReadyListener actionsReadyListener) {
        SaveImageInBackgroundData data = new SaveImageInBackgroundData();
        data.image = mScreenBitmap;
        data.finisher = finisher;
        data.mActionsReadyListener = actionsReadyListener;
        data.createDeleteAction = false;
        if (mSaveInBgTask != null) {
            mSaveInBgTask.cancel(false);
        }

        mSaveInBgTask = new SaveImageInBackgroundTask(mContext, data).execute();
    }

    /**
     * Takes a screenshot of the current display and shows an animation.
     */
    private void takeScreenshot(Consumer<Uri> finisher, Rect crop) {
        clearScreenshot("new screenshot requested");

        int rot = mDisplay.getRotation();
        int width = crop.width();
        int height = crop.height();

        Rect screenRect = new Rect(0, 0, mDisplayMetrics.widthPixels, mDisplayMetrics.heightPixels);

        takeScreenshot(SurfaceControl.screenshot(crop, width, height, rot), finisher, screenRect);
    }

    private void takeScreenshot(Bitmap screenshot, Consumer<Uri> finisher, Rect screenRect) {
        mScreenBitmap = screenshot;
        if (mScreenBitmap == null) {
            mNotificationsController.notifyScreenshotError(
                    R.string.screenshot_failed_to_capture_text);
            finisher.accept(null);
            return;
        }

        // Optimizations
        mScreenBitmap.setHasAlpha(false);
        mScreenBitmap.prepareToDraw();

        mWindowManager.addView(mScreenshotLayout, mWindowLayoutParams);
        mScreenshotLayout.getViewTreeObserver().addOnComputeInternalInsetsListener(this);

        // Start the post-screenshot animation
        startAnimation(finisher, screenRect.width(), screenRect.height(),
                screenRect);
    }

    void takeScreenshot(Consumer<Uri> finisher) {
        mDisplay.getRealMetrics(mDisplayMetrics);
        takeScreenshot(
                finisher,
                new Rect(0, 0, mDisplayMetrics.widthPixels, mDisplayMetrics.heightPixels));
    }

    void handleImageAsScreenshot(Bitmap screenshot, Rect screenshotScreenBounds,
            Insets visibleInsets, int taskId, Consumer<Uri> finisher) {
        // TODO use taskId and visibleInsets
        clearScreenshot("new screenshot requested");
        takeScreenshot(screenshot, finisher, screenshotScreenBounds);
    }

    /**
     * Displays a screenshot selector
     */
    @SuppressLint("ClickableViewAccessibility")
    void takeScreenshotPartial(final Consumer<Uri> finisher) {
        mWindowManager.addView(mScreenshotLayout, mWindowLayoutParams);
        mScreenshotSelectorView.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                ScreenshotSelectorView view = (ScreenshotSelectorView) v;
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        view.startSelection((int) event.getX(), (int) event.getY());
                        return true;
                    case MotionEvent.ACTION_MOVE:
                        view.updateSelection((int) event.getX(), (int) event.getY());
                        return true;
                    case MotionEvent.ACTION_UP:
                        view.setVisibility(View.GONE);
                        mWindowManager.removeView(mScreenshotLayout);
                        final Rect rect = view.getSelectionRect();
                        if (rect != null) {
                            if (rect.width() != 0 && rect.height() != 0) {
                                // Need mScreenshotLayout to handle it after the view disappears
                                mScreenshotLayout.post(() -> takeScreenshot(finisher, rect));
                            }
                        }

                        view.stopSelection();
                        return true;
                }

                return false;
            }
        });
        mScreenshotLayout.post(() -> {
            mScreenshotSelectorView.setVisibility(View.VISIBLE);
            mScreenshotSelectorView.requestFocus();
        });
    }

    /**
     * Cancels screenshot request
     */
    void stopScreenshot() {
        // If the selector layer still presents on screen, we remove it and resets its state.
        if (mScreenshotSelectorView.getSelectionRect() != null) {
            mWindowManager.removeView(mScreenshotLayout);
            mScreenshotSelectorView.stopSelection();
        }
    }

    /**
     * Clears current screenshot
     */
    private void clearScreenshot(String reason) {
        Log.e(TAG, "clearing screenshot: " + reason);
        if (mScreenshotLayout.isAttachedToWindow()) {
            mWindowManager.removeView(mScreenshotLayout);
        }
        mScreenshotHandler.removeMessages(MESSAGE_CORNER_TIMEOUT);
        mScreenshotLayout.getViewTreeObserver().removeOnComputeInternalInsetsListener(this);

        // Clear any references to the bitmap
        mScreenshotView.setImageBitmap(null);
        mActionsContainer.setVisibility(View.GONE);
        mBackgroundView.setVisibility(View.GONE);
        mBackgroundProtection.setAlpha(0f);
        mDismissButton.setVisibility(View.GONE);
        mScreenshotView.setVisibility(View.GONE);
        mScreenshotView.setLayerType(View.LAYER_TYPE_NONE, null);
    }

    /**
     * Starts the animation after taking the screenshot
     */
    private void startAnimation(final Consumer<Uri> finisher, int w, int h,
            @Nullable Rect screenRect) {
        // If power save is on, show a toast so there is some visual indication that a screenshot
        // has been taken.
        PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
        if (powerManager.isPowerSaveMode()) {
            Toast.makeText(mContext, R.string.screenshot_saved_title, Toast.LENGTH_SHORT).show();
        }

        // Add the view for the animation
        mScreenshotView.setImageBitmap(mScreenBitmap);

        mScreenshotAnimation = createScreenshotDropInAnimation(w, h, screenRect);

        saveScreenshotInWorkerThread(finisher, new ActionsReadyListener() {
            @Override
            void onActionsReady(Uri uri, List<Notification.Action> smartActions,
                    List<Notification.Action> actions) {
                if (uri == null) {
                    mNotificationsController.notifyScreenshotError(
                            R.string.screenshot_failed_to_capture_text);
                } else {
                    mScreenshotHandler.post(() -> {
                        if (mScreenshotAnimation != null && mScreenshotAnimation.isRunning()) {
                            mScreenshotAnimation.addListener(
                                    new AnimatorListenerAdapter() {
                                        @Override
                                        public void onAnimationEnd(Animator animation) {
                                            super.onAnimationEnd(animation);
                                            createScreenshotActionsShadeAnimation(
                                                    smartActions, actions).start();
                                        }
                                    });
                        } else {
                            createScreenshotActionsShadeAnimation(smartActions,
                                    actions).start();
                        }
                    });
                }
                mScreenshotHandler.removeMessages(MESSAGE_CORNER_TIMEOUT);
                mScreenshotHandler.sendMessageDelayed(
                        mScreenshotHandler.obtainMessage(MESSAGE_CORNER_TIMEOUT),
                        SCREENSHOT_CORNER_TIMEOUT_MILLIS);
            }
        });
        mScreenshotHandler.post(() -> {
            // Play the shutter sound to notify that we've taken a screenshot
            mCameraSound.play(MediaActionSound.SHUTTER_CLICK);

            mScreenshotView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
            mScreenshotView.buildLayer();
            mScreenshotAnimation.start();
        });
    }

    private AnimatorSet createScreenshotDropInAnimation(int width, int height, Rect bounds) {
        float cornerScale = mCornerSizeX / (float) width;

        AnimatorSet dropInAnimation = new AnimatorSet();
        ValueAnimator flashInAnimator = ValueAnimator.ofFloat(0, 1);
        flashInAnimator.setDuration(SCREENSHOT_FLASH_IN_DURATION_MS);
        flashInAnimator.setInterpolator(mFastOutSlowIn);
        flashInAnimator.addUpdateListener(animation ->
                mScreenshotFlash.setAlpha((float) animation.getAnimatedValue()));

        ValueAnimator flashOutAnimator = ValueAnimator.ofFloat(1, 0);
        flashOutAnimator.setDuration(SCREENSHOT_FLASH_OUT_DURATION_MS);
        flashOutAnimator.setInterpolator(mFastOutSlowIn);
        flashOutAnimator.addUpdateListener(animation ->
                mScreenshotFlash.setAlpha((float) animation.getAnimatedValue()));

        final PointF startPos = new PointF(bounds.centerX(), bounds.centerY());
        final PointF finalPos = new PointF(mScreenshotOffsetXPx + width * cornerScale / 2f,
                mDisplayMetrics.heightPixels - mScreenshotOffsetYPx - height * cornerScale / 2f);

        ValueAnimator toCorner = ValueAnimator.ofFloat(0, 1);
        toCorner.setDuration(SCREENSHOT_TO_CORNER_Y_DURATION_MS);
        float xPositionPct =
                SCREENSHOT_TO_CORNER_X_DURATION_MS / (float) SCREENSHOT_TO_CORNER_Y_DURATION_MS;
        float scalePct =
                SCREENSHOT_TO_CORNER_SCALE_DURATION_MS / (float) SCREENSHOT_TO_CORNER_Y_DURATION_MS;
        toCorner.addUpdateListener(animation -> {
            float t = animation.getAnimatedFraction();
            if (t < scalePct) {
                float scale = MathUtils.lerp(
                        1, cornerScale, mFastOutSlowIn.getInterpolation(t / scalePct));
                mScreenshotView.setScaleX(scale);
                mScreenshotView.setScaleY(scale);
            } else {
                mScreenshotView.setScaleX(cornerScale);
                mScreenshotView.setScaleY(cornerScale);
            }

            if (t < xPositionPct) {
                float xCenter = MathUtils.lerp(startPos.x, finalPos.x,
                        mFastOutSlowIn.getInterpolation(t / xPositionPct));
                mScreenshotView.setX(xCenter - width * mScreenshotView.getScaleX() / 2f);
            } else {
                mScreenshotView.setX(finalPos.x - width * mScreenshotView.getScaleX() / 2f);
            }
            float yCenter = MathUtils.lerp(startPos.y, finalPos.y,
                    mFastOutSlowIn.getInterpolation(t));
            mScreenshotView.setY(yCenter - height * mScreenshotView.getScaleY() / 2f);
        });

        toCorner.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationStart(Animator animation) {
                super.onAnimationStart(animation);
                mScreenshotView.setVisibility(View.VISIBLE);
            }
        });

        mScreenshotFlash.setAlpha(0f);
        mScreenshotFlash.setVisibility(View.VISIBLE);

        dropInAnimation.play(flashOutAnimator).after(flashInAnimator);
        dropInAnimation.play(flashOutAnimator).with(toCorner);

        dropInAnimation.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationEnd(Animator animation) {
                super.onAnimationEnd(animation);
                mScreenshotView.setScaleX(cornerScale);
                mScreenshotView.setScaleY(cornerScale);
                mScreenshotView.setX(finalPos.x - width * cornerScale / 2f);
                mScreenshotView.setY(finalPos.y - height * cornerScale / 2f);
                Rect bounds = new Rect();
                mScreenshotView.getBoundsOnScreen(bounds);
                mDismissButton.setX(bounds.right - mDismissButtonSize / 2f);
                mDismissButton.setY(bounds.top - mDismissButtonSize / 2f);
                mDismissButton.setVisibility(View.VISIBLE);
            }
        });

        return dropInAnimation;
    }

    private ValueAnimator createScreenshotActionsShadeAnimation(
            List<Notification.Action> smartActions, List<Notification.Action> actions) {
        LayoutInflater inflater = LayoutInflater.from(mContext);
        mActionsView.removeAllViews();
        mActionsContainer.setScrollX(0);
        mScreenshotLayout.invalidate();
        mScreenshotLayout.requestLayout();
        mScreenshotLayout.getViewTreeObserver().dispatchOnGlobalLayout();

        // By default the activities won't be able to start immediately; override this to keep
        // the same behavior as if started from a notification
        try {
            ActivityManager.getService().resumeAppSwitches();
        } catch (RemoteException e) {
        }

        for (Notification.Action smartAction : smartActions) {
            ScreenshotActionChip actionChip = (ScreenshotActionChip) inflater.inflate(
                    R.layout.global_screenshot_action_chip, mActionsView, false);
            actionChip.setText(smartAction.title);
            actionChip.setIcon(smartAction.getIcon(), false);
            actionChip.setPendingIntent(smartAction.actionIntent,
                    () -> clearScreenshot("chip tapped"));
            mActionsView.addView(actionChip);
        }

        for (Notification.Action action : actions) {
            ScreenshotActionChip actionChip = (ScreenshotActionChip) inflater.inflate(
                    R.layout.global_screenshot_action_chip, mActionsView, false);
            actionChip.setText(action.title);
            actionChip.setIcon(action.getIcon(), true);
            actionChip.setPendingIntent(action.actionIntent, () -> clearScreenshot("chip tapped"));
            if (action.actionIntent.getIntent().getAction().equals(Intent.ACTION_EDIT)) {
                mScreenshotView.setOnClickListener(v -> {
                    try {
                        action.actionIntent.send();
                        clearScreenshot("screenshot preview tapped");
                    } catch (PendingIntent.CanceledException e) {
                        Log.e(TAG, "Intent cancelled", e);
                    }
                });
            }
            mActionsView.addView(actionChip);
        }

        if (DeviceConfig.getBoolean(NAMESPACE_SYSTEMUI, SCREENSHOT_SCROLLING_ENABLED, false)) {
            ScreenshotActionChip scrollChip = (ScreenshotActionChip) inflater.inflate(
                    R.layout.global_screenshot_action_chip, mActionsView, false);
            Toast scrollNotImplemented = Toast.makeText(
                    mContext, "Not implemented", Toast.LENGTH_SHORT);
            scrollChip.setText("Extend"); // TODO (mkephart): add resource and translate
            scrollChip.setIcon(
                    Icon.createWithResource(mContext, R.drawable.ic_arrow_downward), true);
            scrollChip.setOnClickListener(v -> scrollNotImplemented.show());
            mActionsView.addView(scrollChip);
        }

        ValueAnimator animator = ValueAnimator.ofFloat(0, 1);
        mActionsContainer.setY(mDisplayMetrics.heightPixels);
        mActionsContainer.setVisibility(VISIBLE);
        mActionsContainer.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
        float actionsViewHeight = mActionsContainer.getMeasuredHeight() + mScreenshotHeightPx;

        animator.addUpdateListener(animation -> {
            float t = animation.getAnimatedFraction();
            mBackgroundProtection.setAlpha(t);
            mActionsContainer.setY(mDisplayMetrics.heightPixels - actionsViewHeight * t);
        });
        return animator;
    }

    /**
     * Receiver to proxy the share or edit intent, used to clean up the notification and send
     * appropriate signals to the system (ie. to dismiss the keyguard if necessary).
     */
    public static class ActionProxyReceiver extends BroadcastReceiver {
        static final int CLOSE_WINDOWS_TIMEOUT_MILLIS = 3000;
        private final StatusBar mStatusBar;

        @Inject
        public ActionProxyReceiver(Optional<Lazy<StatusBar>> statusBarLazy) {
            Lazy<StatusBar> statusBar = statusBarLazy.orElse(null);
            mStatusBar = statusBar != null ? statusBar.get() : null;
        }

        @Override
        public void onReceive(Context context, final Intent intent) {
            Runnable startActivityRunnable = () -> {
                try {
                    ActivityManagerWrapper.getInstance().closeSystemWindows(
                            SYSTEM_DIALOG_REASON_SCREENSHOT).get(
                            CLOSE_WINDOWS_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS);
                } catch (TimeoutException | InterruptedException | ExecutionException e) {
                    Slog.e(TAG, "Unable to share screenshot", e);
                    return;
                }

                Intent actionIntent = intent.getParcelableExtra(EXTRA_ACTION_INTENT);
                if (intent.getBooleanExtra(EXTRA_CANCEL_NOTIFICATION, false)) {
                    ScreenshotNotificationsController.cancelScreenshotNotification(context);
                }
                ActivityOptions opts = ActivityOptions.makeBasic();
                opts.setDisallowEnterPictureInPictureWhileLaunching(
                        intent.getBooleanExtra(EXTRA_DISALLOW_ENTER_PIP, false));
                context.startActivityAsUser(actionIntent, opts.toBundle(), UserHandle.CURRENT);
            };

            if (mStatusBar != null) {
                mStatusBar.executeRunnableDismissingKeyguard(startActivityRunnable, null,
                        true /* dismissShade */, true /* afterKeyguardGone */,
                        true /* deferred */);
            } else {
                startActivityRunnable.run();
            }

            if (intent.getBooleanExtra(EXTRA_SMART_ACTIONS_ENABLED, false)) {
                String actionType = Intent.ACTION_EDIT.equals(intent.getAction()) ? ACTION_TYPE_EDIT
                        : ACTION_TYPE_SHARE;
                ScreenshotSmartActions.notifyScreenshotAction(
                        context, intent.getStringExtra(EXTRA_ID), actionType, false);
            }
        }
    }

    /**
     * Removes the notification for a screenshot after a share target is chosen.
     */
    public static class TargetChosenReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            // Clear the notification only after the user has chosen a share action
            ScreenshotNotificationsController.cancelScreenshotNotification(context);
        }
    }

    /**
     * Removes the last screenshot.
     */
    public static class DeleteScreenshotReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (!intent.hasExtra(SCREENSHOT_URI_ID)) {
                return;
            }

            // Clear the notification when the image is deleted
            ScreenshotNotificationsController.cancelScreenshotNotification(context);

            // And delete the image from the media store
            final Uri uri = Uri.parse(intent.getStringExtra(SCREENSHOT_URI_ID));
            new DeleteImageInBackgroundTask(context).execute(uri);
            if (intent.getBooleanExtra(EXTRA_SMART_ACTIONS_ENABLED, false)) {
                ScreenshotSmartActions.notifyScreenshotAction(
                        context, intent.getStringExtra(EXTRA_ID), ACTION_TYPE_DELETE, false);
            }
        }
    }

    /**
     * Executes the smart action tapped by the user in the notification.
     */
    public static class SmartActionsReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            PendingIntent pendingIntent = intent.getParcelableExtra(EXTRA_ACTION_INTENT);
            Intent actionIntent = pendingIntent.getIntent();
            String actionType = intent.getStringExtra(EXTRA_ACTION_TYPE);
            Slog.d(TAG, "Executing smart action [" + actionType + "]:" + actionIntent);
            ActivityOptions opts = ActivityOptions.makeBasic();
            context.startActivityAsUser(actionIntent, opts.toBundle(), UserHandle.CURRENT);

            ScreenshotSmartActions.notifyScreenshotAction(
                    context, intent.getStringExtra(EXTRA_ID), actionType, true);
        }
    }
}