Add LoadingContentError type

1 files changed, 43 insertions, 0 deletions

diff --git a/android/app/src/main/kotlin/net/mullvad/mullvadvpn/util/LoadingContentError.kt b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/util/LoadingContentError.kt
new file mode 100644
index 0000000000..8be59ef814
--- /dev/null
+++ b/android/app/src/main/kotlin/net/mullvad/mullvadvpn/util/LoadingContentError.kt
@@ -0,0 +1,43 @@
+package net.mullvad.mullvadvpn.util
+
+sealed interface Lce<out T, out E> {
+    data object Loading : Lce<Nothing, Nothing>
+
+    data class Content<T>(val value: T) : Lce<T, Nothing>
+
+    data class Error<E>(val error: E) : Lce<Nothing, E>
+
+    fun content(): T? =
+        when (this) {
+            is Loading,
+            is Error -> null
+            is Content -> value
+        }
+
+    fun error(): E? =
+        when (this) {
+            is Loading,
+            is Content -> null
+            is Error -> error
+        }
+
+    fun isLoading(): Boolean = this is Loading
+}
+
+fun <T, E> T.toLce(): Lce<T, E> = Lce.Content(this)
+
+sealed interface Lc<out T> {
+    data object Loading : Lc<Nothing>
+
+    data class Content<T>(val value: T) : Lc<T>
+
+    fun content(): T? =
+        when (this) {
+            is Content -> value
+            Loading -> null
+        }
+
+    fun isLoading(): Boolean = this is Loading
+}
+
+fun <T> T.toLc(): Lc<T> = Lc.Content(this)