Add an activity for launching a restore from backup

Change-Id: Ibd73f8549bb3ec9e829ad9082399dbbf0a6ca4f5

src/org/lineageos/setupwizard/SetupWizardApp.java

@@ -39,6 +39,7 @@ public class SetupWizardApp extends Application {
     public static final String ACTION_SETUP_WIFI = "android.net.wifi.PICK_WIFI_NETWORK";
     public static final String ACTION_SETUP_FINGERPRINT = "android.settings.FINGERPRINT_SETUP";
     public static final String ACTION_SETUP_LOCKSCREEN = "com.android.settings.SETUP_LOCK_SCREEN";
+    public static final String ACTION_RESTORE_FROM_BACKUP = "com.stevesoltys.seedvault.RESTORE_BACKUP";
     public static final String ACTION_EMERGENCY_DIAL = "com.android.phone.EmergencyDialer.DIAL";
     public static final String ACTION_NEXT = "com.android.wizard.NEXT";
     public static final String ACTION_LOAD = "com.android.wizard.LOAD";
@@ -69,6 +70,7 @@ public class SetupWizardApp extends Application {
     public static final int REQUEST_CODE_SETUP_BLUETOOTH= 5;
     public static final int REQUEST_CODE_SETUP_FINGERPRINT = 7;
     public static final int REQUEST_CODE_SETUP_LOCKSCREEN = 9;
+    public static final int REQUEST_CODE_RESTORE = 10;
 
     public static final int RADIO_READY_TIMEOUT = 10 * 1000;
 

src/org/lineageos/setupwizard/backup/RestoreIntroActivity.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019-2020 The Calyx Institute
+ *
+ * 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 org.lineageos.setupwizard.backup;
+
+import android.content.Intent;
+import org.lineageos.setupwizard.R;
+import org.lineageos.setupwizard.SubBaseActivity;
+
+import static org.lineageos.setupwizard.SetupWizardApp.ACTION_RESTORE_FROM_BACKUP;
+import static org.lineageos.setupwizard.SetupWizardApp.REQUEST_CODE_RESTORE;
+
+public class RestoreIntroActivity extends SubBaseActivity {
+
+    @Override
+    protected void onStartSubactivity() {
+        setNextAllowed(true);
+
+        findViewById(R.id.intro_restore_button).setOnClickListener(v -> launchRestore());
+    }
+
+    @Override
+    protected int getLayoutResId() {
+        return R.layout.intro_restore_activity;
+    }
+
+    @Override
+    protected int getTitleResId() {
+        return R.string.intro_restore_title;
+    }
+
+    @Override
+    protected int getIconResId() {
+        return R.drawable.ic_restore;
+    }
+
+    @Override
+    protected int getSubactivityNextTransition() {
+        return TRANSITION_ID_SLIDE;
+    }
+
+    private void launchRestore() {
+        Intent intent = new Intent(ACTION_RESTORE_FROM_BACKUP);
+        startSubactivity(intent, REQUEST_CODE_RESTORE);
+    }
+
+}