7e04453c74
Adding dialog fragments to handle SIM enable, disable, rename, and erase and make dialogs persistent over screen rotation. Bug: 160819390 Test: Manually tested eSIM profile disabling. Design: https://docs.google.com/document/d/1wb5_hoBkZVbkXGNWHbx4Jf61swjfxsJzkytiTzJosYo/edit?usp=sharing Change-Id: I6b8c9a1c88eacdcbd3a5f0e466b1308ef639c225
103 lines
4.0 KiB
Java
103 lines
4.0 KiB
Java
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.network.telephony;
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import android.app.Activity;
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import android.app.DialogFragment;
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import android.app.Fragment;
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import android.os.Bundle;
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import androidx.annotation.Nullable;
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/**
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* Base dialog fragment class with the functionality to make a fragment or an activity as a listener
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* which can survive through the activity restarts.
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*/
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public abstract class BaseDialogFragment extends DialogFragment {
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// Tags for the listener which receives event callbacks.
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private static final String ARG_LISTENER_TAG = "listener_tag";
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private static final String ARG_IN_CALLER_TAG = "in_caller_tag";
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/**
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* @param activity The caller activity or the activity attached with the fragment.
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* @param listener The original caller, that is, the listener. The listener can be the fragment
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* to receive event callbacks. If it is null, will use the activity to handle the event
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* callback instead.
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* @param callbackInterfaceClass The interface that the listener should implements.
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* @param arguments The arguments bundle of the dispatcher fragment used to store the listener's
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* info.
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* @param tagInCaller An integer given by the listener to distinguish the action when calling
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* the listener's callback function.
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*/
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protected static <T> void setListener(
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Activity activity,
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@Nullable Fragment listener,
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Class<T> callbackInterfaceClass,
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int tagInCaller,
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Bundle arguments) {
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checkValidity(activity, listener, callbackInterfaceClass);
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if (listener != null && listener.getParentFragment() != null) {
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throw new IllegalArgumentException("The listener must be attached to an activity.");
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}
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arguments.putInt(ARG_IN_CALLER_TAG, tagInCaller);
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if (listener != null) {
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arguments.putString(ARG_LISTENER_TAG, listener.getTag());
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}
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}
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/**
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* @param callbackInterfaceClass The interface that the listener should implements.
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* @param <T> Template type.
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* @return The listener class.
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*/
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@SuppressWarnings("unchecked")
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protected <T> T getListener(Class<T> callbackInterfaceClass) {
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Object listener;
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String listenerTag = getArguments().getString(ARG_LISTENER_TAG);
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if (listenerTag == null) {
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listener = getActivity();
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} else {
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listener = getActivity().getFragmentManager().findFragmentByTag(listenerTag);
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}
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if (callbackInterfaceClass.isInstance(listener)) {
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return (T) listener;
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}
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throw new IllegalArgumentException("The caller should implement the callback function.");
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}
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/** @return The tag set in the listener. */
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protected int getTagInCaller() {
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return getArguments().getInt(ARG_IN_CALLER_TAG);
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}
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private static <T> void checkValidity(
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Activity activity, @Nullable Fragment listener, Class<T> callbackInterfaceClass) {
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if (listener != null) {
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if (!callbackInterfaceClass.isInstance(listener)) {
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throw new IllegalArgumentException(
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"The listener fragment should implement the callback function.");
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}
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} else {
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if (!callbackInterfaceClass.isInstance(activity)) {
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throw new IllegalArgumentException(
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"The caller activity should implement the callback function.");
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}
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}
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}
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}
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