1 files changed, 71 insertions, 0 deletions
diff --git a/ui/src/main/java/com/wireguard/android/preference/VersionPreference.java b/ui/src/main/java/com/wireguard/android/preference/VersionPreference.java
new file mode 100644
index 00000000..7e95a8ae
--- /dev/null
+++ b/ui/src/main/java/com/wireguard/android/preference/VersionPreference.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.wireguard.android.preference;
+
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import androidx.annotation.Nullable;
+import androidx.preference.Preference;
+import android.util.AttributeSet;
+
+import com.wireguard.android.Application;
+import com.wireguard.android.BuildConfig;
+import com.wireguard.android.R;
+import com.wireguard.android.backend.Backend;
+import com.wireguard.android.backend.GoBackend;
+import com.wireguard.android.backend.WgQuickBackend;
+
+import java.util.Locale;
+
+public class VersionPreference extends Preference {
+    @Nullable private String versionSummary;
+
+    private String getBackendPrettyName(final Context context, final Backend backend) {
+        if (backend instanceof GoBackend)
+            return context.getString(R.string.type_name_kernel_module);
+        if (backend instanceof WgQuickBackend)
+            return context.getString(R.string.type_name_go_userspace);
+        return "";
+    }
+
+    public VersionPreference(final Context context, final AttributeSet attrs) {
+        super(context, attrs);
+
+        Application.getBackendAsync().thenAccept(backend -> {
+            versionSummary = getContext().getString(R.string.version_summary_checking, getBackendPrettyName(context, backend).toLowerCase(Locale.ENGLISH));
+            Application.getAsyncWorker().supplyAsync(backend::getVersion).whenComplete((version, exception) -> {
+                versionSummary = exception == null
+                        ? getContext().getString(R.string.version_summary, getBackendPrettyName(context, backend), version)
+                        : getContext().getString(R.string.version_summary_unknown, getBackendPrettyName(context, backend).toLowerCase(Locale.ENGLISH));
+                notifyChanged();
+            });
+        });
+    }
+
+    @Nullable
+    @Override
+    public CharSequence getSummary() {
+        return versionSummary;
+    }
+
+    @Override
+    public CharSequence getTitle() {
+        return getContext().getString(R.string.version_title, BuildConfig.VERSION_NAME);
+    }
+
+    @Override
+    protected void onClick() {
+        final Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setData(Uri.parse("https://www.wireguard.com/"));
+        try {
+            getContext().startActivity(intent);
+        } catch (final ActivityNotFoundException ignored) {
+        }
+    }
+
+}