chrome/android/java/src/org/chromium/chrome/browser/preferences/NotificationsPreferences.java

// Copyright 2017 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.preferences;

import android.os.Build;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceFragment;

import org.chromium.chrome.R;
import org.chromium.chrome.browser.ContentSettingsType;
import org.chromium.chrome.browser.ntp.snippets.SnippetsBridge;
import org.chromium.chrome.browser.preferences.website.ContentSettingsResources;
import org.chromium.chrome.browser.preferences.website.SingleCategoryPreferences;
import org.chromium.chrome.browser.preferences.website.SiteSettingsCategory;
import org.chromium.chrome.browser.profiles.Profile;

/**
 * Settings fragment that allows the user to configure notifications. It contains general
 * notification channels at the top level and links to website specific notifications. This is only
 * used on pre-O devices, devices on Android O+ will link to the Android notification settings.
 */
public class NotificationsPreferences extends PreferenceFragment {
    // These are package-private to be used in tests.
    static final String PREF_FROM_WEBSITES = "from_websites";
    static final String PREF_SUGGESTIONS = "content_suggestions";

    private ChromeSwitchPreference mSuggestionsPref;
    private Preference mFromWebsitesPref;
    private SnippetsBridge mSnippetsBridge;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        assert Build.VERSION.SDK_INT < Build.VERSION_CODES.O
            : "NotificationsPreferences should only be used pre-O.";

        super.onCreate(savedInstanceState);

        mSnippetsBridge = new SnippetsBridge(Profile.getLastUsedProfile());

        PreferenceUtils.addPreferencesFromResource(this, R.xml.notifications_preferences);
        getActivity().setTitle(R.string.prefs_notifications);

        mSuggestionsPref = (ChromeSwitchPreference) findPreference(PREF_SUGGESTIONS);
        mSuggestionsPref.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
            @Override
            public boolean onPreferenceChange(Preference preference, Object newValue) {
                SnippetsBridge.setContentSuggestionsNotificationsEnabled((boolean) newValue);
                return true;
            }
        });

        mFromWebsitesPref = findPreference(PREF_FROM_WEBSITES);
        mFromWebsitesPref.getExtras().putString(SingleCategoryPreferences.EXTRA_CATEGORY,
                SiteSettingsCategory.preferenceKey(SiteSettingsCategory.Type.NOTIFICATIONS));
    }

    @Override
    public void onResume() {
        super.onResume();
        update();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        mSnippetsBridge.destroy();
    }

    /**
     * Updates the state of displayed preferences.
     */
    private void update() {
        boolean suggestionsEnabled = mSnippetsBridge.areRemoteSuggestionsEnabled();
        mSuggestionsPref.setChecked(
                suggestionsEnabled && SnippetsBridge.areContentSuggestionsNotificationsEnabled());
        mSuggestionsPref.setEnabled(suggestionsEnabled);
        mSuggestionsPref.setSummary(suggestionsEnabled
                        ? R.string.notifications_content_suggestions_summary
                        : R.string.notifications_content_suggestions_summary_disabled);

        mFromWebsitesPref.setSummary(ContentSettingsResources.getCategorySummary(
                ContentSettingsType.CONTENT_SETTINGS_TYPE_NOTIFICATIONS,
                PrefServiceBridge.getInstance().isCategoryEnabled(
                        ContentSettingsType.CONTENT_SETTINGS_TYPE_NOTIFICATIONS)));
    }
}