+/*
+ * Copyright © 2021 Damyan Ivanov.
+ * This file is part of MoLe.
+ * MoLe is free software: you can distribute it and/or modify it
+ * under the term of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your opinion), any later version.
+ *
+ * MoLe is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License terms for details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package net.ktnx.mobileledger.ui;
+
+import android.content.Context;
+
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.MutableLiveData;
+
+public abstract class QRScanCapableFragment extends Fragment {
+ private static final MutableLiveData<Integer> qrScanTrigger = new MutableLiveData<>();
+ protected final ActivityResultLauncher<Void> scanQrLauncher = QR.registerLauncher(this, this::onQrScanned);
+ public static void triggerQRScan() {
+ qrScanTrigger.setValue(1);
+ }
+ protected abstract void onQrScanned(String text);
+ @Override
+ public void onAttach(@NonNull Context context) {
+ super.onAttach(context);
+ qrScanTrigger.observe(this, ignored -> {
+ scanQrLauncher.launch(null);
+ });
+ }
+}