chrome/android/java/src/org/chromium/chrome/browser/ActivityUtils.java

// Copyright 2021 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package org.chromium.chrome.browser;

import android.app.Activity;

import androidx.annotation.Nullable;

import org.chromium.content_public.browser.WebContents;
import org.chromium.ui.base.WindowAndroid;

/** Provides a set of utilities to help with working with Activities. */
public final class ActivityUtils {
    /**
     * Looks up the Activity of the given web contents. This can be null. Should never be cached,
     * because web contents can change activities, e.g., when user selects "Open in Chrome" menu
     * item.
     *
     * @param webContents The web contents for which to lookup the Activity.
     * @return Activity currently related to webContents. Could be <c>null</c> and could change,
     *         therefore do not cache.
     */
    @Nullable
    public static Activity getActivityFromWebContents(@Nullable WebContents webContents) {
        if (webContents == null || webContents.isDestroyed()) return null;

        WindowAndroid window = webContents.getTopLevelNativeWindow();
        if (window == null) return null;

        Activity activity = window.getActivity().get();
        return activity;
    }
}