Jaehwa Noh
2 years ago
committed by
GitHub
commit
bd31b14226
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/*
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* Copyright 2024 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.samples.apps.nowinandroid.ui.interests2pane
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import androidx.lifecycle.SavedStateHandle
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import androidx.lifecycle.ViewModel
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import com.google.samples.apps.nowinandroid.feature.interests.navigation.TOPIC_ID_ARG
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import dagger.hilt.android.lifecycle.HiltViewModel
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import kotlinx.coroutines.flow.StateFlow
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import javax.inject.Inject
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@HiltViewModel
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class Interests2PaneViewModel @Inject constructor(
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private val savedStateHandle: SavedStateHandle,
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) : ViewModel() {
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val selectedTopicId: StateFlow<String?> = savedStateHandle.getStateFlow(TOPIC_ID_ARG, null)
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fun onTopicClick(topicId: String?) {
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savedStateHandle[TOPIC_ID_ARG] = topicId
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}
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}
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/*
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* Copyright 2024 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.samples.apps.nowinandroid.ui.interests2pane
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import androidx.activity.compose.BackHandler
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import androidx.compose.foundation.layout.Box
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import androidx.compose.material3.Text
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import androidx.compose.material3.adaptive.ExperimentalMaterial3AdaptiveApi
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import androidx.compose.material3.adaptive.ListDetailPaneScaffold
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import androidx.compose.material3.adaptive.ListDetailPaneScaffoldRole
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import androidx.compose.material3.adaptive.PaneAdaptedValue
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import androidx.compose.material3.adaptive.ThreePaneScaffoldNavigator
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import androidx.compose.material3.adaptive.rememberListDetailPaneScaffoldNavigator
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import androidx.compose.runtime.Composable
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import androidx.compose.runtime.LaunchedEffect
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import androidx.compose.runtime.getValue
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import androidx.hilt.navigation.compose.hiltViewModel
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import androidx.lifecycle.compose.collectAsStateWithLifecycle
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import androidx.navigation.NavGraphBuilder
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import androidx.navigation.NavType
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import androidx.navigation.compose.NavHost
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import androidx.navigation.compose.composable
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import androidx.navigation.compose.rememberNavController
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import androidx.navigation.navArgument
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import com.google.samples.apps.nowinandroid.feature.interests.InterestsRoute
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import com.google.samples.apps.nowinandroid.feature.interests.navigation.INTERESTS_ROUTE
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import com.google.samples.apps.nowinandroid.feature.interests.navigation.TOPIC_ID_ARG
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import com.google.samples.apps.nowinandroid.feature.topic.navigation.TOPIC_ROUTE
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import com.google.samples.apps.nowinandroid.feature.topic.navigation.navigateToTopic
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import com.google.samples.apps.nowinandroid.feature.topic.navigation.topicScreen
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private const val DETAIL_PANE_NAVHOST_ROUTE = "detail_pane_route"
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fun NavGraphBuilder.interestsListDetailScreen() {
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composable(
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route = INTERESTS_ROUTE,
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arguments = listOf(
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navArgument(TOPIC_ID_ARG) {
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type = NavType.StringType
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defaultValue = null
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nullable = true
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},
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),
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) {
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InterestsListDetailScreen()
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}
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}
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@Composable
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internal fun InterestsListDetailScreen(
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viewModel: Interests2PaneViewModel = hiltViewModel(),
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) {
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val selectedTopicId by viewModel.selectedTopicId.collectAsStateWithLifecycle()
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InterestsListDetailScreen(
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selectedTopicId = selectedTopicId,
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onTopicClick = viewModel::onTopicClick,
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)
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}
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@OptIn(ExperimentalMaterial3AdaptiveApi::class)
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@Composable
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internal fun InterestsListDetailScreen(
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selectedTopicId: String?,
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onTopicClick: (String) -> Unit,
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) {
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val listDetailNavigator = rememberListDetailPaneScaffoldNavigator<Nothing>()
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BackHandler(listDetailNavigator.canNavigateBack()) {
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listDetailNavigator.navigateBack()
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}
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val nestedNavController = rememberNavController()
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fun onTopicClickShowDetailPane(topicId: String) {
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onTopicClick(topicId)
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nestedNavController.navigateToTopic(topicId) {
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popUpTo(DETAIL_PANE_NAVHOST_ROUTE)
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}
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listDetailNavigator.navigateTo(ListDetailPaneScaffoldRole.Detail)
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}
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ListDetailPaneScaffold(
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scaffoldState = listDetailNavigator.scaffoldState,
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listPane = {
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InterestsRoute(
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onTopicClick = ::onTopicClickShowDetailPane,
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highlightSelectedTopic = listDetailNavigator.isDetailPaneVisible(),
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)
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},
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detailPane = {
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NavHost(
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navController = nestedNavController,
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startDestination = TOPIC_ROUTE,
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route = DETAIL_PANE_NAVHOST_ROUTE,
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) {
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topicScreen(
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showBackButton = !listDetailNavigator.isListPaneVisible(),
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onBackClick = listDetailNavigator::navigateBack,
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onTopicClick = ::onTopicClickShowDetailPane,
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)
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composable(route = TOPIC_ROUTE) {
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Box {
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Text("Placeholder")
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}
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}
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}
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},
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)
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LaunchedEffect(Unit) {
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if (selectedTopicId != null) {
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// Initial topic ID was provided when navigating to Interests, so show its details.
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onTopicClickShowDetailPane(selectedTopicId)
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}
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}
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}
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@OptIn(ExperimentalMaterial3AdaptiveApi::class)
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private fun <T> ThreePaneScaffoldNavigator<T>.isListPaneVisible(): Boolean =
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scaffoldState.scaffoldValue[ListDetailPaneScaffoldRole.List] == PaneAdaptedValue.Expanded
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@OptIn(ExperimentalMaterial3AdaptiveApi::class)
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private fun <T> ThreePaneScaffoldNavigator<T>.isDetailPaneVisible(): Boolean =
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scaffoldState.scaffoldValue[ListDetailPaneScaffoldRole.Detail] == PaneAdaptedValue.Expanded
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@ -0,0 +1 @@
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/build
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@ -0,0 +1,34 @@
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/*
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* Copyright 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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plugins {
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alias(libs.plugins.nowinandroid.android.library)
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alias(libs.plugins.nowinandroid.android.library.compose)
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alias(libs.plugins.nowinandroid.android.hilt)
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}
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android {
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namespace = "com.google.samples.apps.nowinandroid.core.screenshottesting"
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}
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dependencies {
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api(libs.roborazzi)
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implementation(libs.accompanist.testharness)
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implementation(libs.androidx.activity.compose)
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implementation(libs.androidx.compose.ui.test)
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implementation(libs.robolectric)
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implementation(projects.core.common)
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implementation(projects.core.designsystem)
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}
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@ -0,0 +1,17 @@
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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Copyright 2022 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<manifest />
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