[Audiosharing] Use DialogFragment instead of raw AlertDialog

FragmentManager can help manage the state of the dialog and automatically restore the dialog when a configuration change occurs

Test: atest
Flag: com.android.settingslib.flags.enable_le_audio_sharing
Bug: 362858921
Change-Id: If63c7891cfb92e06c457e37eb5556f3eaf3f6121

src/com/android/settings/bluetooth/ProgressDialogFragment.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2024 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.settings.bluetooth;
+
+import android.app.Dialog;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+import androidx.appcompat.app.AlertDialog;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.lifecycle.Lifecycle;
+
+import com.android.settings.R;
+import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
+
+import com.google.common.base.Strings;
+
+public class ProgressDialogFragment extends InstrumentedDialogFragment {
+    private static final String TAG = "BTProgressDialog";
+
+    private static final String BUNDLE_KEY_MESSAGE = "bundle_key_message";
+
+    @Nullable private static FragmentManager sManager;
+    @Nullable private static Lifecycle sLifecycle;
+    private String mMessage = "";
+    @Nullable private AlertDialog mAlertDialog;
+
+    @Override
+    public int getMetricsCategory() {
+        // TODO: add metrics
+        return 0;
+    }
+
+    /**
+     * Returns a new instance of {@link ProgressDialogFragment} dialog.
+     *
+     * @param host The Fragment this dialog will be hosted.
+     */
+    @Nullable
+    public static ProgressDialogFragment newInstance(@Nullable Fragment host) {
+        if (host == null) return null;
+        try {
+            sManager = host.getChildFragmentManager();
+            sLifecycle = host.getLifecycle();
+        } catch (IllegalStateException e) {
+            Log.d(TAG, "Fail to create new instance: " + e.getMessage());
+            return null;
+        }
+        return new ProgressDialogFragment();
+    }
+
+    /**
+     * Display {@link ProgressDialogFragment} dialog.
+     *
+     * @param message The message to be shown on the dialog
+     */
+    public void show(@NonNull String message) {
+        if (sManager == null) return;
+        Lifecycle.State currentState = sLifecycle == null ? null : sLifecycle.getCurrentState();
+        if (currentState == null || !currentState.isAtLeast(Lifecycle.State.STARTED)) {
+            Log.d(TAG, "Fail to show dialog with state: " + currentState);
+            return;
+        }
+        if (mAlertDialog != null && mAlertDialog.isShowing()) {
+            if (!mMessage.equals(message)) {
+                Log.d(TAG, "Update dialog message.");
+                TextView messageView = mAlertDialog.findViewById(R.id.message);
+                if (messageView != null) {
+                    messageView.setText(message);
+                }
+                mMessage = message;
+            }
+            Log.d(TAG, "Dialog is showing, return.");
+            return;
+        }
+        mMessage = message;
+        Log.d(TAG, "Show up the progress dialog.");
+        Bundle args = new Bundle();
+        args.putString(BUNDLE_KEY_MESSAGE, message);
+        setArguments(args);
+        show(sManager, TAG);
+    }
+
+    /** Returns the current message on the dialog. */
+    @VisibleForTesting
+    @NonNull
+    public String getMessage() {
+        return mMessage;
+    }
+
+    private ProgressDialogFragment() {
+    }
+
+    @Override
+    @NonNull
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        Bundle args = requireArguments();
+        String message = args.getString(BUNDLE_KEY_MESSAGE, "");
+        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+        LayoutInflater inflater = LayoutInflater.from(builder.getContext());
+        View customView = inflater.inflate(
+                R.layout.dialog_audio_sharing_progress, /* root= */ null);
+        TextView textView = customView.findViewById(R.id.message);
+        if (textView != null && !Strings.isNullOrEmpty(message)) {
+            textView.setText(message);
+        }
+        AlertDialog dialog = builder.setView(customView).setCancelable(false).create();
+        dialog.setCanceledOnTouchOutside(false);
+        mAlertDialog = dialog;
+        return dialog;
+    }
+}