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/*
* Copyright (C) 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.permissioncontroller.role.ui.handheld;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.preference.PreferenceFragmentCompat;
import com.android.permissioncontroller.role.ui.DefaultAppListChildFragment;
import com.android.permissioncontroller.role.ui.RolePreference;
/**
* Handheld preference fragment for the list of default apps.
* <p>
* Must be added as a child fragment and its parent fragment must implement {@link Parent}.
*/
public class HandheldDefaultAppListPreferenceFragment extends PreferenceFragmentCompat
implements DefaultAppListChildFragment.Parent {
/**
* Create a new instance of this fragment.
*
* @return a new instance of this fragment
*/
@NonNull
public static HandheldDefaultAppListPreferenceFragment newInstance() {
return new HandheldDefaultAppListPreferenceFragment();
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
if (savedInstanceState == null) {
DefaultAppListChildFragment fragment = DefaultAppListChildFragment.newInstance();
getChildFragmentManager().beginTransaction()
.add(fragment, null)
.commit();
}
}
@Override
public void onCreatePreferences(@Nullable Bundle savedInstanceState, @Nullable String rootKey) {
// Preferences will be added by the child fragment later.
}
@NonNull
@Override
public RolePreference createPreference() {
return new HandheldRolePreference(requireContext());
}
@Override
public void onPreferenceScreenChanged() {
requireParent().onPreferenceScreenChanged();
}
@NonNull
private Parent requireParent() {
//noinspection unchecked
return (Parent) requireParentFragment();
}
/**
* Interface that the parent fragment must implement.
*/
public interface Parent {
/**
* Callback when changes have been made to the {@link androidx.preference.PreferenceScreen}
* of this {@link PreferenceFragmentCompat}.
*/
void onPreferenceScreenChanged();
}
}
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