[优化] 优化目录页面性能和界面

app/src/main/java/io/legado/app/data/dao/BookDao.kt

@@ -109,6 +109,9 @@ interface BookDao {
     @Query("SELECT * FROM books WHERE bookUrl = :bookUrl")
     fun getBook(bookUrl: String): Book?
 
+    @Query("SELECT * FROM books WHERE bookUrl = :bookUrl")
+    fun flowGetBook(bookUrl: String): Flow<Book?>
+
     @Query("SELECT * FROM books WHERE name = :name and author = :author")
     fun getBook(name: String, author: String): Book?
 

app/src/main/java/io/legado/app/help/book/BookHelp.kt

@@ -189,7 +189,7 @@ object BookHelp {
         if (book.isOnLineTxt && AppConfig.tocCountWords) {
             val wordCount = StringUtils.wordCountFormat(content.length)
             bookChapter.wordCount = wordCount
-            appDb.bookChapterDao.upWordCount(bookChapter.bookUrl, bookChapter.url, wordCount)
+            appDb.bookChapterDao.update(bookChapter)
         }
     }
 

app/src/main/java/io/legado/app/model/CacheBook.kt

@@ -52,14 +52,14 @@ object CacheBook {
     val downloadSummaryFlow = _downloadSummaryFlow.asStateFlow()
 
     private val _downloadingIndicesFlow =
-        MutableSharedFlow<Pair<String, Set<Int>>>(extraBufferCapacity = 64)
+        MutableStateFlow<Pair<String, Set<Int>>>("" to emptySet())
 
-    val downloadingIndicesFlow = _downloadingIndicesFlow.asSharedFlow()