Add a quick filter on the open source licence screen.

features/licenses/impl/src/main/kotlin/io/element/android/features/licenses/impl/list/DependencyLicensesListEvent.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Please see LICENSE in the repository root for full details.
+ */
+
+package io.element.android.features.licenses.impl.list
+
+sealed interface DependencyLicensesListEvent {
+    data class SetFilter(val filter: String) : DependencyLicensesListEvent
+}

features/licenses/impl/src/main/kotlin/io/element/android/features/licenses/impl/list/DependencyLicensesListPresenter.kt

@@ -29,13 +29,43 @@ class DependencyLicensesListPresenter @Inject constructor(
         var licenses by remember {
             mutableStateOf<AsyncData<ImmutableList<DependencyLicenseItem>>>(AsyncData.Loading())
         }
+        var filteredLicenses by remember {
+            mutableStateOf<AsyncData<ImmutableList<DependencyLicenseItem>>>(AsyncData.Loading())
+        }
+        var filter by remember { mutableStateOf("") }
         LaunchedEffect(Unit) {
             runCatching {
                 licenses = AsyncData.Success(licensesProvider.provides().toPersistentList())
             }.onFailure {
                 licenses = AsyncData.Failure(it)
             }
         }
-        return DependencyLicensesListState(licenses = licenses)
+        LaunchedEffect(filter, licenses.dataOrNull()) {
+            val data = licenses.dataOrNull()
+            val safeFilter = filter.trim()
+            if (data != null && safeFilter.isNotEmpty()) {
+                filteredLicenses = AsyncData.Success(data.filter {
+                    it.safeName.contains(safeFilter, ignoreCase = true) ||
+                        it.groupId.contains(safeFilter, ignoreCase = true) ||
+                        it.artifactId.contains(safeFilter, ignoreCase = true)
+                }.toPersistentList())
+            } else {
+                filteredLicenses = licenses
+            }
+        }
+
+        fun handleEvent(dependencyLicensesListEvent: DependencyLicensesListEvent) {
+            when (dependencyLicensesListEvent) {
+                is DependencyLicensesListEvent.SetFilter -> {
+                    filter = dependencyLicensesListEvent.filter
+                }
+            }
+        }
+
+        return DependencyLicensesListState(
+            licenses = filteredLicenses,
+            filter = filter,
+            eventSink = ::handleEvent,
+        )
     }
 }

features/licenses/impl/src/main/kotlin/io/element/android/features/licenses/impl/list/DependencyLicensesListState.kt

@@ -13,4 +13,6 @@ import kotlinx.collections.immutable.ImmutableList
 
 data class DependencyLicensesListState(
     val licenses: AsyncData<ImmutableList<DependencyLicenseItem>>,
+    val filter: String,
+    val eventSink: (DependencyLicensesListEvent) -> Unit,
 )

features/licenses/impl/src/main/kotlin/io/element/android/features/licenses/impl/list/DependencyLicensesListStateProvider.kt

@@ -11,28 +11,49 @@
 import io.element.android.features.licenses.impl.model.DependencyLicenseItem
 import io.element.android.features.licenses.impl.model.License
 import io.element.android.libraries.architecture.AsyncData
+import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
 
 open class DependencyLicensesListStateProvider : PreviewParameterProvider<DependencyLicensesListState> {
     override val values: Sequence<DependencyLicensesListState>
         get() = sequenceOf(
-            DependencyLicensesListState(
+            aDependencyLicensesListState(
                 licenses = AsyncData.Loading()
             ),
-            DependencyLicensesListState(
+            aDependencyLicensesListState(
                 licenses = AsyncData.Failure(Exception("Failed to load licenses"))
             ),
-            DependencyLicensesListState(
+            aDependencyLicensesListState(
                 licenses = AsyncData.Success(
                     persistentListOf(
                         aDependencyLicenseItem(),
                         aDependencyLicenseItem(name = null),
                     )
                 )
-            )
+            ),
+            aDependencyLicensesListState(
+                licenses = AsyncData.Success(
+                    persistentListOf(
+                        aDependencyLicenseItem(),
+                        aDependencyLicenseItem(name = null),
+                    )
+                ),
+                filter = "a filter",
+            ),
         )
 }
 
+private fun aDependencyLicensesListState(
+    licenses: AsyncData<ImmutableList<DependencyLicenseItem>>,
+    filter: String = "",
+): DependencyLicensesListState {
+    return DependencyLicensesListState(
+        licenses = licenses,
+        filter = filter,
+        eventSink = {},
+    )
+}
+
 internal fun aDependencyLicenseItem(
     name: String? = "A dependency",
 ) = DependencyLicenseItem(

features/licenses/impl/src/main/kotlin/io/element/android/features/licenses/impl/list/DependencyLicensesListView.kt

@@ -7,31 +7,36 @@
 
 package io.element.android.features.licenses.impl.list
 
+import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.OutlinedTextField
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.PreviewParameter
 import androidx.compose.ui.unit.dp
+import io.element.android.compound.tokens.generated.CompoundIcons
 import io.element.android.features.licenses.impl.model.DependencyLicenseItem
 import io.element.android.libraries.architecture.AsyncData
 import io.element.android.libraries.designsystem.components.button.BackButton
 import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.PreviewsDayNight
 import io.element.android.libraries.designsystem.theme.components.CircularProgressIndicator
+import io.element.android.libraries.designsystem.theme.components.Icon
 import io.element.android.libraries.designsystem.theme.components.ListItem
 import io.element.android.libraries.designsystem.theme.components.Scaffold
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.theme.components.TopAppBar
 import io.element.android.libraries.ui.strings.CommonStrings
 
-@OptIn(ExperimentalMaterial3Api::class)
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalFoundationApi::class)
 @Composable
 fun DependencyLicensesListView(
     state: DependencyLicensesListState,
@@ -48,48 +53,64 @@
             )
         },
     ) { contentPadding ->
-        LazyColumn(
+        Column(
             modifier = Modifier
                 .padding(contentPadding)
                 .padding(horizontal = 16.dp)
         ) {
-            when (state.licenses) {
-                is AsyncData.Failure -> item {
-                    Text(
-                        text = stringResource(CommonStrings.common_error),
-                        modifier = Modifier.padding(16.dp)
-                    )
-                }
-                AsyncData.Uninitialized,
-                is AsyncData.Loading -> item {
-                    Box(
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .padding(top = 64.dp)
-                    ) {
-                        CircularProgressIndicator(
-                            modifier = Modifier.align(Alignment.Center)
+            if (state.licenses.isSuccess()) {
+                // Search field
+                OutlinedTextField(
+                    value = state.filter,
+                    onValueChange = { state.eventSink(DependencyLicensesListEvent.SetFilter(it)) },
+                    leadingIcon = {
+                        Icon(
+                            imageVector = CompoundIcons.Search(),
+                            contentDescription = null,
+                        )
+                    },
+                    modifier = Modifier.fillMaxWidth(),
+                )
+            }
+            LazyColumn {
+                when (state.licenses) {
+                    is AsyncData.Failure -> item {
+                        Text(
+                            text = stringResource(CommonStrings.common_error),
+                            modifier = Modifier.padding(16.dp)
                         )
                     }
-                }
-                is AsyncData.Success -> items(state.licenses.data) { license ->
-                    ListItem(
-                        headlineContent = { Text(license.safeName) },
-                        supportingContent = {
-                            Text(
-                                buildString {
-                                    append(license.groupId)
-                                    append(":")
-                                    append(license.artifactId)
-                                    append(":")
-                                    append(license.version)
-                                }
+                    AsyncData.Uninitialized,
+                    is AsyncData.Loading -> item {
+                        Box(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(top = 64.dp)
+                        ) {
+                            CircularProgressIndicator(
+                                modifier = Modifier.align(Alignment.Center)
                             )
-                        },
-                        onClick = {
-                            onOpenLicense(license)
                         }
-                    )
+                    }
+                    is AsyncData.Success -> items(state.licenses.data) { license ->
+                        ListItem(
+                            headlineContent = { Text(license.safeName) },
+                            supportingContent = {
+                                Text(
+                                    buildString {
+                                        append(license.groupId)
+                                        append(":")
+                                        append(license.artifactId)
+                                        append(":")
+                                        append(license.version)
+                                    }
+                                )
+                            },
+                            onClick = {
+                                onOpenLicense(license)
+                            }
+                        )
+                    }
                 }
             }
         }

features/licenses/impl/src/test/kotlin/io/element/android/features/licenses/impl/list/DependencyLicensesListPresenterTest.kt

@@ -33,6 +33,7 @@ class DependencyLicensesListPresenterTest {
             val finalState = awaitItem()
             assertThat(finalState.licenses.isSuccess()).isTrue()
             assertThat(finalState.licenses.dataOrNull()).isEmpty()
+            assertThat(finalState.filter).isEqualTo("")
         }
     }
 
@@ -54,6 +55,40 @@ class DependencyLicensesListPresenterTest {
         }
     }
 
+    @Test
+    fun `present - initial state, one license, set filter`() = runTest {
+        val anItem = aDependencyLicenseItem()
+        val presenter = createPresenter {
+            listOf(anItem)
+        }
+        moleculeFlow(RecompositionMode.Immediate) {
+            presenter.present()
+        }.test {
+            val initialState = awaitItem()
+            assertThat(initialState.licenses).isInstanceOf(AsyncData.Loading::class.java)
+            val loadedState = awaitItem()
+            assertThat(loadedState.licenses.isSuccess()).isTrue()
+            assertThat(loadedState.licenses.dataOrNull()!!.size).isEqualTo(1)
+            loadedState.eventSink(DependencyLicensesListEvent.SetFilter("dep"))
+            awaitItem().let { state ->
+                assertThat(state.licenses.dataOrNull()!!.size).isEqualTo(1)
+                assertThat(state.filter).isEqualTo("dep")
+            }
+            loadedState.eventSink(DependencyLicensesListEvent.SetFilter("bleh"))
+            skipItems(1)
+            awaitItem().let { state ->
+                assertThat(state.licenses.dataOrNull()!!.size).isEqualTo(0)
+                assertThat(state.filter).isEqualTo("bleh")
+            }
+            loadedState.eventSink(DependencyLicensesListEvent.SetFilter(""))
+            skipItems(1)
+            awaitItem().let { state ->
+                assertThat(state.licenses.dataOrNull()!!.size).isEqualTo(1)
+                assertThat(state.filter).isEqualTo("")
+            }
+        }
+    }
+
     private fun createPresenter(
         provideResult: () -> List<DependencyLicenseItem>
     ) = DependencyLicensesListPresenter(