android_packages_apps_Cherish/src/com/cherish/settings/fragments/RecentsSettings.java

package com.cherish.settings.fragments;

import com.android.internal.logging.nano.MetricsProto;
import android.app.Activity;
import android.content.Context;
import android.content.ContentResolver;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.SystemProperties;
import android.os.UserHandle;
import androidx.preference.ListPreference;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import androidx.preference.PreferenceCategory;
import androidx.preference.Preference.OnPreferenceChangeListener;
import androidx.preference.SwitchPreference;
import android.provider.Settings;
import com.android.settings.R;

import java.util.Arrays;
import java.util.HashSet;

import com.cherish.settings.preferences.SystemSettingMasterSwitchPreference;
import com.android.settings.SettingsPreferenceFragment;

public class RecentsSettings extends SettingsPreferenceFragment implements
        OnPreferenceChangeListener {

    private static final String PREF_STOCK_RECENTS_CATEGORY = "stock_recents_category";
    private static final String PREF_ALTERNATIVE_RECENTS_CATEGORY = "alternative_recents_category";
    private static final String PREF_SWIPE_UP_ENABLED = "swipe_up_enabled_warning";

    private PreferenceCategory mStockRecentsCategory;
    private PreferenceCategory mAlternativeRecentsCategory;
    private Context mContext;

    @Override
    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        addPreferencesFromResource(R.xml.cherish_settings_recents);

        ContentResolver resolver = getActivity().getContentResolver();

        mStockRecentsCategory = (PreferenceCategory) findPreference(PREF_STOCK_RECENTS_CATEGORY);
        mAlternativeRecentsCategory =
                (PreferenceCategory) findPreference(PREF_ALTERNATIVE_RECENTS_CATEGORY);

        // Alternative recents en-/disabling
        Preference.OnPreferenceChangeListener alternativeRecentsChangeListener =
                new Preference.OnPreferenceChangeListener() {
            @Override
            public boolean onPreferenceChange(Preference preference, Object newValue) {
                updateDependencies(preference, (Boolean) newValue);
                return true;
            }
        };
        for (int i = 0; i < mAlternativeRecentsCategory.getPreferenceCount(); i++) {
            Preference preference = mAlternativeRecentsCategory.getPreference(i);
            if (preference instanceof SystemSettingMasterSwitchPreference) {
                preference.setOnPreferenceChangeListener(alternativeRecentsChangeListener);
            }
        }

        updateDependencies();

        // Warning for alternative recents when gesture navigation is enabled,
        // which directly controls quickstep (launcher) recents.
        final int navigationMode = getActivity().getResources()
                .getInteger(com.android.internal.R.integer.config_navBarInteractionMode);
        // config_navBarInteractionMode:
        //  0: 3 button mode (supports slim recents)
        //  1: 2 button mode (currently does not support alternative recents)
        //  2: gesture only (currently does not support alternative recents)
        if (navigationMode != 0) {
            for (int i = 0; i < mAlternativeRecentsCategory.getPreferenceCount(); i++) {
                Preference preference = mAlternativeRecentsCategory.getPreference(i);
                if (PREF_SWIPE_UP_ENABLED.equals(preference.getKey())) {
                    // We want to have that one enabled
                    continue;
                }
                preference.setEnabled(false);
            }
        } else {
            mAlternativeRecentsCategory.removePreference(findPreference(PREF_SWIPE_UP_ENABLED));
        }
    }

    private void updateDependencies() {
        updateDependencies(null, null);
    }

    private void updateDependencies(Preference updatedPreference, Boolean newValue) {
        // Disable stock recents category if alternative enabled
        boolean alternativeRecentsEnabled = newValue != null && newValue;
        if (!alternativeRecentsEnabled) {
            for (int i = 0; i < mAlternativeRecentsCategory.getPreferenceCount(); i++) {
                Preference preference = mAlternativeRecentsCategory.getPreference(i);
                if (preference == updatedPreference) {
                    // Already used newValue
                    continue;
                }
                if (preference instanceof SystemSettingMasterSwitchPreference
                        && ((SystemSettingMasterSwitchPreference) preference).isChecked()) {
                    alternativeRecentsEnabled = true;
                    break;
                }
            }
        }
        if (mStockRecentsCategory != null) {
            mStockRecentsCategory.setEnabled(!alternativeRecentsEnabled);
        }

    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object objValue) {

    return false;

    }

    @Override
    public int getMetricsCategory() {
        return MetricsProto.MetricsEvent.CHERISH_SETTINGS;
    }
}