ui: add suffix to persistent keepalive in editor

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

build.gradle

@@ -24,7 +24,7 @@ buildscript {
         jsr305Version = '3.0.2'
         junitVersion = '4.13'
         kotlinVersion = '1.3.71'
-        materialComponentsVersion = '1.1.0'
+        materialComponentsVersion = '1.2.0-alpha05'
         mavenPluginVersion = '2.1'
         preferenceVersion = '1.1.0'
         streamsupportVersion = '1.7.2'

ui/src/main/java/com/wireguard/android/databinding/BindingAdapters.kt

@@ -151,4 +151,15 @@ object BindingAdapters {
     fun setInetAddressSetText(view: TextView, addresses: Iterable<InetAddress?>?) {
         view.text = if (addresses != null) Attribute.join(addresses.map { it?.hostAddress }) else ""
     }
+
+    @JvmStatic
+    fun tryParseInt(s: String?): Int {
+        if (s == null)
+            return 0
+        return try {
+            Integer.parseInt(s)
+        } catch (_: Exception) {
+            0
+        }
+    }
 }

ui/src/main/res/layout/tunnel_editor_peer.xml

@@ -8,6 +8,8 @@
 
         <import type="com.wireguard.android.widget.KeyInputFilter" />
 
+        <import type="com.wireguard.android.databinding.BindingAdapters" />
+
         <variable
             name="collection"
             type="androidx.databinding.ObservableList&lt;com.wireguard.android.viewmodel.PeerProxy&gt;" />
@@ -104,6 +106,7 @@
                 android:layout_height="wrap_content"
                 android:layout_margin="4dp"
                 android:hint="@string/persistent_keepalive"
+                app:suffixText="@{@plurals/persistent_keepalive_seconds_suffix(BindingAdapters.tryParseInt(item.persistentKeepalive))}"
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintTop_toBottomOf="@id/pre_shared_key_label_layout">
@@ -114,7 +117,7 @@
                     android:layout_height="wrap_content"
                     android:hint="@string/hint_optional_discouraged"
                     android:inputType="number"
-                    android:text="@={item.persistentKeepalive}" />
+                    android:text="@={item.persistentKeepalive}"/>
             </com.google.android.material.textfield.TextInputLayout>
 
             <com.google.android.material.textfield.TextInputLayout

ui/src/main/res/values/strings.xml

@@ -43,6 +43,10 @@
         <item quantity="one">every second</item>
         <item quantity="other">every %d seconds</item>
     </plurals>
+    <plurals name="persistent_keepalive_seconds_suffix">
+        <item quantity="one">second</item>
+        <item quantity="other">seconds</item>
+    </plurals>
     <string name="use_all_applications">Use all apps</string>
     <string name="add_peer">Add peer</string>
     <string name="addresses">Addresses</string>