FeatureFlag: first implementation

libraries/featureflag/ui/build.gradle.kts

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+/*
+ * Copyright (c) 2023 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.
+ */
+
+// TODO: Remove once https://youtrack.jetbrains.com/issue/KTIJ-19369 is fixed
+@Suppress("DSL_SCOPE_VIOLATION")
+plugins {
+    id("io.element.android-compose-library")
+    alias(libs.plugins.anvil)
+    alias(libs.plugins.ksp)
+    id("kotlin-parcelize")
+}
+
+android {
+    namespace = "io.element.android.libraries.featureflag.ui"
+}
+
+anvil {
+    generateDaggerFactories.set(true)
+}
+
+dependencies {
+    implementation(projects.anvilannotations)
+    anvil(projects.anvilcodegen)
+    implementation(projects.libraries.designsystem)
+    ksp(libs.showkase.processor)
+}

libraries/featureflag/ui/src/main/kotlin/io/element/android/libraries/featureflag/ui/FeatureListView.kt

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+/*
+ * Copyright (c) 2023 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.libraries.featureflag.ui
+
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import io.element.android.libraries.designsystem.components.preferences.PreferenceSwitch
+import io.element.android.libraries.designsystem.preview.ElementPreviewDark
+import io.element.android.libraries.designsystem.preview.ElementPreviewLight
+import io.element.android.libraries.featureflag.ui.model.FeatureUiModel
+import io.element.android.libraries.featureflag.ui.model.aFeatureUiModelList
+import kotlinx.collections.immutable.ImmutableList
+
+@Composable
+fun FeatureListView(
+    features: ImmutableList<FeatureUiModel>,
+    onCheckedChange: (FeatureUiModel, Boolean) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    LazyColumn(
+        modifier = modifier,
+    ) {
+        items(
+            items = features,
+            key = { it.key }
+        ) { feature ->
+
+            fun onCheckedChange(isChecked: Boolean) {
+                onCheckedChange(feature, isChecked)
+            }
+
+            FeaturePreferenceView(feature = feature, onCheckedChange = ::onCheckedChange)
+        }
+    }
+}
+
+@Composable
+fun FeaturePreferenceView(
+    feature: FeatureUiModel,
+    onCheckedChange: (Boolean) -> Unit,
+    modifier: Modifier = Modifier
+) {
+
+    PreferenceSwitch(
+        title = feature.title,
+        isChecked = feature.isEnabled,
+        modifier = modifier,
+        onCheckedChange = onCheckedChange
+    )
+}
+
+@Preview
+@Composable
+internal fun FeatureListViewLightPreview() =
+    ElementPreviewLight { ContentToPreview() }
+
+@Preview
+@Composable
+internal fun FeatureListViewDarkPreview() =
+    ElementPreviewDark { ContentToPreview() }
+
+@Composable
+private fun ContentToPreview() {
+    FeatureListView(
+        features = aFeatureUiModelList(),
+        onCheckedChange = { _, _ -> }
+    )
+}

libraries/featureflag/ui/src/main/kotlin/io/element/android/libraries/featureflag/ui/model/FeatureUiModel.kt

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+/*
+ * Copyright (c) 2023 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.libraries.featureflag.ui.model
+
+data class FeatureUiModel(
+    val key: String,
+    val title: String,
+    val isEnabled: Boolean
+)

libraries/featureflag/ui/src/main/kotlin/io/element/android/libraries/featureflag/ui/model/FeatureUiModelProvider.kt

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+/*
+ * Copyright (c) 2023 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.libraries.featureflag.ui.model
+
+import kotlinx.collections.immutable.ImmutableList
+import kotlinx.collections.immutable.persistentListOf
+
+fun aFeatureUiModelList(): ImmutableList<FeatureUiModel> {
+    return persistentListOf(
+        FeatureUiModel("key1", "Display State Events", true),
+        FeatureUiModel("key2", "Display Room Events", false)
+    )
+}