Create CallScreenStateProvider to be able to preview errors.

features/call/impl/src/main/kotlin/io/element/android/features/call/impl/ui/CallScreenStateProvider.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2024 New Vector Ltd
+ *
+ * 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 io.element.android.features.call.impl.ui
+
+import androidx.compose.ui.tooling.preview.PreviewParameterProvider
+import io.element.android.libraries.architecture.AsyncData
+
+open class CallScreenStateProvider : PreviewParameterProvider<CallScreenState> {
+    override val values: Sequence<CallScreenState>
+        get() = sequenceOf(
+            aCallScreenState(),
+            aCallScreenState(urlState = AsyncData.Failure(Exception("An error occurred"))),
+        )
+}
+
+private fun aCallScreenState(
+    urlState: AsyncData<String> = AsyncData.Success("https://call.element.io/some-actual-call?with=parameters"),
+    userAgent: String = "",
+    isInWidgetMode: Boolean = false,
+    eventSink: (CallScreenEvents) -> Unit = {},
+): CallScreenState {
+    return CallScreenState(
+        urlState = urlState,
+        userAgent = userAgent,
+        isInWidgetMode = isInWidgetMode,
+        eventSink = eventSink,
+    )
+}

features/call/impl/src/main/kotlin/io/element/android/features/call/impl/ui/CallScreenView.kt

@@ -32,6 +32,7 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.PreviewParameter
 import androidx.compose.ui.viewinterop.AndroidView
 import io.element.android.compound.tokens.generated.CompoundIcons
 import io.element.android.features.call.impl.R
@@ -157,16 +158,11 @@ private fun WebView.setup(
 
 @PreviewsDayNight
 @Composable
-internal fun CallScreenViewPreview() {
-    ElementPreview {
+internal fun CallScreenViewPreview(
+    @PreviewParameter(CallScreenStateProvider::class) state: CallScreenState,
+) = ElementPreview {
     CallScreenView(
-            state = CallScreenState(
-                urlState = AsyncData.Success("https://call.element.io/some-actual-call?with=parameters"),
-                isInWidgetMode = false,
-                userAgent = "",
-                eventSink = {},
-            ),
+        state = state,
         requestPermissions = { _, _ -> },
     )
-    }
 }