1 files changed, 42 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/activities/common/SelfRefreshingLiveData.kt b/app/src/main/java/org/pacien/tincapp/activities/common/SelfRefreshingLiveData.kt
new file mode 100644
index 0000000..cb98736
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/activities/common/SelfRefreshingLiveData.kt
@@ -0,0 +1,42 @@
+/*
+ * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon
+ * Copyright (C) 2017-2018 Pacien TRAN-GIRARD
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.pacien.tincapp.activities.common
+
+import android.arch.lifecycle.LiveData
+import java.util.concurrent.Executors
+import java.util.concurrent.ScheduledFuture
+import java.util.concurrent.TimeUnit
+
+/**
+ * @author pacien
+ */
+abstract class SelfRefreshingLiveData<T>(private val refreshInterval: Long, private val timeUnit: TimeUnit) : LiveData<T>() {
+  private val scheduledExecutor = Executors.newSingleThreadScheduledExecutor()
+  private lateinit var scheduledFuture: ScheduledFuture<*>
+
+  override fun onActive() {
+    scheduledFuture = scheduledExecutor.scheduleWithFixedDelay(this::onRefresh, 0, refreshInterval, timeUnit)
+  }
+
+  override fun onInactive() {
+    scheduledFuture.cancel(false)
+  }
+
+  abstract fun onRefresh()
+}