src/com/android/packageinstaller/role/ui/DefaultAppConfirmationDialogFragment.java

/*
 * 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.packageinstaller.role.ui;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.DialogFragment;
import androidx.fragment.app.Fragment;

/**
 * {@link DialogFragment} for confirmation before setting a default app.
 */
public class DefaultAppConfirmationDialogFragment extends DialogFragment {

    private String mPackageName;
    private CharSequence mMessage;

    /**
     * Create a new instance of this fragment.
     *
     * @param packageName the package name of the application
     * @param message the confirmation message
     *
     * @return a new instance of this fragment
     *
     * @see #show(String, CharSequence, Fragment)
     */
    @NonNull
    public static DefaultAppConfirmationDialogFragment newInstance(@NonNull String packageName,
            @NonNull CharSequence message) {
        DefaultAppConfirmationDialogFragment fragment = new DefaultAppConfirmationDialogFragment();
        Bundle arguments = new Bundle();
        arguments.putString(Intent.EXTRA_PACKAGE_NAME, packageName);
        arguments.putCharSequence(Intent.EXTRA_TEXT, message);
        fragment.setArguments(arguments);
        return fragment;
    }

    /**
     * Show a new instance of this fragment.
     *
     * @param packageName the package name of the application
     * @param message the confirmation message
     * @param fragment the parent fragment
     *
     * @see #newInstance(String, CharSequence)
     */
    public static void show(@NonNull String packageName, @NonNull CharSequence message,
            @NonNull Fragment fragment) {
        newInstance(packageName, message).show(fragment.getChildFragmentManager(), null);
    }

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

        Bundle arguments = getArguments();
        mPackageName = arguments.getString(Intent.EXTRA_PACKAGE_NAME);
        mMessage = arguments.getCharSequence(Intent.EXTRA_TEXT);
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
        return new AlertDialog.Builder(requireContext(), getTheme())
                .setMessage(mMessage)
                .setPositiveButton(android.R.string.ok, (dialog, which) -> onOk())
                .setNegativeButton(android.R.string.cancel, null)
                .create();
    }

    private void onOk() {
        Listener listener = (Listener) getParentFragment();
        listener.setDefaultApp(mPackageName);
    }

    /**
     * Listener for {@link DefaultAppConfirmationDialogFragment}.
     */
    public interface Listener {

        /**
         * Set an application as the default app.
         *
         * @param packageName the package name of the application
         */
        void setDefaultApp(@NonNull String packageName);
    }
}