| /* |
| * Copyright 2019 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.car.settings.applications; |
| |
| import android.os.Bundle; |
| import android.widget.Button; |
| |
| import androidx.annotation.XmlRes; |
| |
| import com.android.car.settings.R; |
| import com.android.car.settings.common.SettingsFragment; |
| |
| /** |
| * Fragment base class for use in cases where a list of applications is displayed with the option to |
| * show/hide system apps in the list. |
| */ |
| public abstract class AppListFragment extends SettingsFragment { |
| |
| private static final String KEY_SHOW_SYSTEM = "showSystem"; |
| |
| private boolean mShowSystem; |
| |
| @Override |
| @XmlRes |
| protected int getActionBarLayoutId() { |
| return R.layout.action_bar_with_button; |
| } |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| if (savedInstanceState != null) { |
| mShowSystem = savedInstanceState.getBoolean(KEY_SHOW_SYSTEM, false); |
| } |
| } |
| |
| @Override |
| public void onActivityCreated(Bundle savedInstanceState) { |
| super.onActivityCreated(savedInstanceState); |
| Button toggleShowSystem = requireActivity().findViewById(R.id.action_button1); |
| setButtonText(toggleShowSystem); |
| toggleShowSystem.setOnClickListener(v -> { |
| mShowSystem = !mShowSystem; |
| onToggleShowSystemApps(mShowSystem); |
| setButtonText(toggleShowSystem); |
| }); |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| onToggleShowSystemApps(mShowSystem); |
| } |
| |
| /** Called when a user toggles the option to show system applications in the list. */ |
| protected abstract void onToggleShowSystemApps(boolean showSystem); |
| |
| /** Returns {@code true} if system applications should be shown in the list. */ |
| protected final boolean shouldShowSystemApps() { |
| return mShowSystem; |
| } |
| |
| private void setButtonText(Button button) { |
| // Show text to reverse the current state. |
| button.setText(mShowSystem ? R.string.hide_system : R.string.show_system); |
| } |
| |
| @Override |
| public void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| outState.putBoolean(KEY_SHOW_SYSTEM, mShowSystem); |
| } |
| } |