feat: 收藏页面状态

app/src/main/java/com/huanchengfly/tieba/post/ui/page/threadstore/ThreadStorePage.kt

@@ -20,7 +20,9 @@ import androidx.compose.material.pullrefresh.pullRefresh
 import androidx.compose.material.pullrefresh.rememberPullRefreshState
 import androidx.compose.material.rememberScaffoldState
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
@@ -49,6 +51,7 @@ import com.huanchengfly.tieba.post.pxToSp
 import com.huanchengfly.tieba.post.ui.common.theme.compose.ExtendedTheme
 import com.huanchengfly.tieba.post.ui.widgets.compose.Avatar
 import com.huanchengfly.tieba.post.ui.widgets.compose.BackNavigationIcon
+import com.huanchengfly.tieba.post.ui.widgets.compose.ErrorScreen
 import com.huanchengfly.tieba.post.ui.widgets.compose.LazyLoad
 import com.huanchengfly.tieba.post.ui.widgets.compose.LoadMoreLayout
 import com.huanchengfly.tieba.post.ui.widgets.compose.LongClickMenu
@@ -56,6 +59,7 @@ import com.huanchengfly.tieba.post.ui.widgets.compose.MyScaffold
 import com.huanchengfly.tieba.post.ui.widgets.compose.Sizes
 import com.huanchengfly.tieba.post.ui.widgets.compose.TitleCentredToolbar
 import com.huanchengfly.tieba.post.ui.widgets.compose.UserHeader
+import com.huanchengfly.tieba.post.ui.widgets.compose.states.StateScreen
 import com.huanchengfly.tieba.post.utils.StringUtil
 import com.huanchengfly.tieba.post.utils.StringUtil.getUsernameAnnotatedString
 import com.huanchengfly.tieba.post.utils.appPreferences
@@ -100,12 +104,14 @@ fun ThreadStorePage(
         prop1 = ThreadStoreUiState::data,
         initial = emptyList()
     )
+    val error by viewModel.uiState.collectPartialAsState(
+        prop1 = ThreadStoreUiState::error,
+        initial = null
+    )
+    val isError by remember { derivedStateOf { error != null } }
 
     val context = LocalContext.current
     val scaffoldState = rememberScaffoldState()
-    val pullRefreshState = rememberPullRefreshState(
-        refreshing = isRefreshing,
-        onRefresh = { viewModel.send(ThreadStoreUiIntent.Refresh) })
     viewModel.onEvent<ThreadStoreUiEvent.Delete.Failure> {
         scaffoldState.snackbarHostState.showSnackbar(
             context.getString(
@@ -128,16 +134,36 @@ fun ThreadStorePage(
                 }
             )
         }
-    ) { paddingValues ->
+    ) { contentPaddings ->
         val textMeasurer = rememberTextMeasurer()
 
+        StateScreen(
+            isEmpty = data.isEmpty(),
+            isError = isError,
+            isLoading = isRefreshing,
+            modifier = Modifier.padding(contentPaddings),
+            onReload = {
+                viewModel.send(ThreadStoreUiIntent.Refresh)
+            },
+            errorScreen = {
+                error?.let {
+                    val (e) = it
+                    ErrorScreen(error = e)
+                }
+            }
+        ) {
+            val pullRefreshState = rememberPullRefreshState(
+                refreshing = isRefreshing,
+                onRefresh = { viewModel.send(ThreadStoreUiIntent.Refresh) }
+            )
+
             Box(modifier = Modifier.pullRefresh(pullRefreshState)) {
                 LoadMoreLayout(
                     isLoading = isLoadingMore,
                     onLoadMore = { viewModel.send(ThreadStoreUiIntent.LoadMore(currentPage + 1)) },
                     loadEnd = !hasMore
                 ) {
-                LazyColumn(contentPadding = paddingValues) {
+                    LazyColumn {
                         items(
                             items = data,
                             key = { it.threadId }
@@ -171,7 +197,8 @@ fun ThreadStorePage(
                                         info.author.lzUid?.let {
                                             UserActivity.launch(
                                                 context,
-                                            it, StringUtil.getAvatarUrl(info.author.userPortrait)
+                                                it,
+                                                StringUtil.getAvatarUrl(info.author.userPortrait)
                                             )
                                         }
                                     },
@@ -181,6 +208,7 @@ fun ThreadStorePage(
                         }
                     }
                 }
+
                 PullRefreshIndicator(
                     refreshing = isRefreshing,
                     state = pullRefreshState,
@@ -189,6 +217,7 @@ fun ThreadStorePage(
             }
         }
     }
+}
 
 @OptIn(ExperimentalTextApi::class)
 @Composable

app/src/main/java/com/huanchengfly/tieba/post/ui/page/threadstore/ThreadStoreViewModel.kt

@@ -6,11 +6,13 @@ import com.huanchengfly.tieba.post.api.models.ThreadStoreBean
 import com.huanchengfly.tieba.post.api.retrofit.exception.getErrorCode
 import com.huanchengfly.tieba.post.api.retrofit.exception.getErrorMessage
 import com.huanchengfly.tieba.post.arch.BaseViewModel
+import com.huanchengfly.tieba.post.arch.ImmutableHolder
 import com.huanchengfly.tieba.post.arch.PartialChange
 import com.huanchengfly.tieba.post.arch.PartialChangeProducer
 import com.huanchengfly.tieba.post.arch.UiEvent
 import com.huanchengfly.tieba.post.arch.UiIntent
 import com.huanchengfly.tieba.post.arch.UiState
+import com.huanchengfly.tieba.post.arch.wrapImmutable
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.flow.Flow
@@ -103,13 +105,14 @@ sealed interface ThreadStoreUiIntent : UiIntent {
 sealed interface ThreadStorePartialChange : PartialChange<ThreadStoreUiState> {
     sealed class Refresh : ThreadStorePartialChange {
         override fun reduce(oldState: ThreadStoreUiState): ThreadStoreUiState = when (this) {
-            is Failure -> oldState.copy(isRefreshing = false)
+            is Failure -> oldState.copy(isRefreshing = false, error = wrapImmutable(error))
             Start -> oldState.copy(isRefreshing = true)
             is Success -> oldState.copy(
                 isRefreshing = false,
                 data = data,
                 currentPage = 0,
-                hasMore = hasMore
+                hasMore = hasMore,
+                error = null
             )
         }
 
@@ -171,7 +174,8 @@ data class ThreadStoreUiState(
     val isLoadingMore: Boolean = false,
     val hasMore: Boolean = true,
     val currentPage: Int = 1,
-    val data: List<ThreadStoreBean.ThreadStoreInfo> = emptyList()
+    val data: List<ThreadStoreBean.ThreadStoreInfo> = emptyList(),
+    val error: ImmutableHolder<Throwable>? = null
 ) : UiState
 
 sealed interface ThreadStoreUiEvent : UiEvent {