优化

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

@@ -226,27 +226,6 @@ object BookHelp {
         return null
     }
 
-    /**
-     * 反转章节内容
-     */
-    fun reverseContent(book: Book, bookChapter: BookChapter) {
-        if (!book.isLocalBook()) {
-            val file = downloadDir.getFile(
-                cacheFolderName,
-                book.getFolderName(),
-                bookChapter.getFileName()
-            )
-            if (file.exists()) {
-                val text = file.readText()
-                val stringBuilder = StringBuilder()
-                text.toStringArray().forEach {
-                    stringBuilder.insert(0, it)
-                }
-                file.writeText(stringBuilder.toString())
-            }
-        }
-    }
-
     /**
      * 删除章节内容
      */

app/src/main/java/io/legado/app/ui/book/changesource/ChangeBookSourceDialog.kt

@@ -19,7 +19,7 @@ import io.legado.app.data.appDb
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookSource
 import io.legado.app.data.entities.SearchBook
-import io.legado.app.databinding.DialogChangeSourceBinding
+import io.legado.app.databinding.DialogBookChangeSourceBinding
 import io.legado.app.help.AppConfig
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.ui.book.source.edit.BookSourceEditActivity
@@ -31,7 +31,7 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
 
-class ChangeBookSourceDialog() : BaseDialogFragment(R.layout.dialog_change_source),
+class ChangeBookSourceDialog() : BaseDialogFragment(R.layout.dialog_book_change_source),
     Toolbar.OnMenuItemClickListener,
     ChangeBookSourceAdapter.CallBack {
 
@@ -42,7 +42,7 @@ class ChangeBookSourceDialog() : BaseDialogFragment(R.layout.dialog_change_sourc
         }
     }
 
-    private val binding by viewBinding(DialogChangeSourceBinding::bind)
+    private val binding by viewBinding(DialogBookChangeSourceBinding::bind)
     private val groups = linkedSetOf<String>()
     private val callBack: CallBack? get() = activity as? CallBack
     private val viewModel: ChangeBookSourceViewModel by viewModels()

app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceAdapter.kt

@@ -74,7 +74,7 @@ class ChangeChapterSourceAdapter(
     override fun registerListener(holder: ItemViewHolder, binding: ItemChangeSourceBinding) {
         holder.itemView.setOnClickListener {
             getItem(holder.layoutPosition)?.let {
-                callBack.changeTo(it)
+                callBack.openToc(it)
             }
         }
         holder.itemView.onLongClick {
@@ -112,7 +112,7 @@ class ChangeChapterSourceAdapter(
 
     interface CallBack {
         val bookUrl: String?
-        fun changeTo(searchBook: SearchBook)
+        fun openToc(searchBook: SearchBook)
         fun topSource(searchBook: SearchBook)
         fun bottomSource(searchBook: SearchBook)
         fun editSource(searchBook: SearchBook)

app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceDialog.kt

@@ -19,7 +19,7 @@ import io.legado.app.data.appDb
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookSource
 import io.legado.app.data.entities.SearchBook
-import io.legado.app.databinding.DialogChangeSourceBinding
+import io.legado.app.databinding.DialogChapterChangeSourceBinding
 import io.legado.app.help.AppConfig
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.ui.book.source.edit.BookSourceEditActivity
@@ -31,7 +31,7 @@ import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
 
-class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_change_source),
+class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_chapter_change_source),
     Toolbar.OnMenuItemClickListener,
     ChangeChapterSourceAdapter.CallBack {
 
@@ -42,7 +42,7 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_change_so
         }
     }
 
-    private val binding by viewBinding(DialogChangeSourceBinding::bind)
+    private val binding by viewBinding(DialogChapterChangeSourceBinding::bind)
     private val groups = linkedSetOf<String>()
     private val callBack: CallBack? get() = activity as? CallBack
     private val viewModel: ChangeChapterSourceViewModel by viewModels()
@@ -196,9 +196,8 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_change_so
         return false
     }
 
-    override fun changeTo(searchBook: SearchBook) {
+    override fun openToc(searchBook: SearchBook) {
-        changeSource(searchBook)
+
-        dismissAllowingStateLoss()
     }
 
     override val bookUrl: String?
@@ -282,6 +281,7 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_change_so
     interface CallBack {
         val oldBook: Book?
         fun changeTo(source: BookSource, book: Book)
+        fun replaceContent(content: String)
     }
 
 }

app/src/main/java/io/legado/app/ui/book/changesource/ChangeChapterSourceViewModel.kt

@@ -11,6 +11,7 @@ import io.legado.app.constant.AppPattern
 import io.legado.app.constant.PreferKey
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.Book
+import io.legado.app.data.entities.BookChapter
 import io.legado.app.data.entities.BookSource
 import io.legado.app.data.entities.SearchBook
 import io.legado.app.help.AppConfig
@@ -28,6 +29,7 @@ import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
 import splitties.init.appCtx
 import timber.log.Timber
+import java.util.concurrent.ConcurrentHashMap
 import java.util.concurrent.Executors
 import kotlin.math.min
 
@@ -35,6 +37,7 @@ import kotlin.math.min
 class ChangeChapterSourceViewModel(application: Application) : BaseViewModel(application) {
     private val threadCount = AppConfig.threadCount
     private var searchPool: ExecutorCoroutineDispatcher? = null
+    private val searchGroup get() = appCtx.getPrefString("searchGroup") ?: ""
     val searchStateData = MutableLiveData<Boolean>()
     var name: String = ""
     var author: String = ""
@@ -42,7 +45,7 @@ class ChangeChapterSourceViewModel(application: Application) : BaseViewModel(app
     private var screenKey: String = ""
     private var bookSourceList = arrayListOf<BookSource>()
     private val searchBooks = ConcurrentHashSet<SearchBook>()
-    private val searchGroup get() = appCtx.getPrefString("searchGroup") ?: ""
+    private val tocMap = ConcurrentHashMap<String, List<BookChapter>>()
     private var searchCallback: SourceCallback? = null
     val searchDataFlow = callbackFlow {
 
@@ -203,6 +206,7 @@ class ChangeChapterSourceViewModel(application: Application) : BaseViewModel(app
     private fun loadBookToc(source: BookSource, book: Book) {
         WebBook.getChapterList(viewModelScope, source, book, context = searchPool!!)
             .onSuccess(IO) { chapters ->
+                tocMap[book.bookUrl] = chapters
                 book.latestChapterTitle = chapters.last().title
                 val searchBook: SearchBook = book.toSearchBook()
                 searchCallback?.searchSuccess(searchBook)

app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt

@@ -71,6 +71,7 @@ class ReadBookActivity : BaseReadBookActivity(),
     SearchMenu.CallBack,
     ReadAloudDialog.CallBack,
     ChangeBookSourceDialog.CallBack,
+    ChangeChapterSourceDialog.CallBack,
     ReadBook.CallBack,
     AutoReadDialog.CallBack,
     TocRegexDialog.CallBack,
@@ -689,6 +690,12 @@ class ReadBookActivity : BaseReadBookActivity(),
         viewModel.changeTo(source, book)
     }
 
+    override fun replaceContent(content: String) {
+        ReadBook.book?.let {
+            viewModel.saveContent(it, content)
+        }
+    }
+
     override fun showActionMenu() {
         when {
             BaseReadAloudService.isRun -> showReadAloudDialog()

app/src/main/java/io/legado/app/ui/book/read/ReadBookViewModel.kt

@@ -27,6 +27,7 @@ import io.legado.app.ui.book.read.page.entities.TextChapter
 import io.legado.app.ui.book.searchContent.SearchResult
 import io.legado.app.utils.msg
 import io.legado.app.utils.postEvent
+import io.legado.app.utils.toStringArray
 import io.legado.app.utils.toastOnUi
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.ensureActive
@@ -283,16 +284,36 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
         }
     }
 
-    fun reverseContent(book: Book) {
+    /**
+     * 保存内容
+     */
+    fun saveContent(book: Book, content: String) {
         execute {
             appDb.bookChapterDao.getChapter(book.bookUrl, ReadBook.durChapterIndex)
                 ?.let { chapter ->
-                    BookHelp.reverseContent(book, chapter)
+                    BookHelp.saveText(book, chapter, content)
                     ReadBook.loadContent(ReadBook.durChapterIndex, resetPageOffset = false)
                 }
         }
     }
 
+    /**
+     * 反转内容
+     */
+    fun reverseContent(book: Book) {
+        execute {
+            val chapter = appDb.bookChapterDao.getChapter(book.bookUrl, ReadBook.durChapterIndex)
+                ?: return@execute
+            val content = BookHelp.getContent(book, chapter) ?: return@execute
+            val stringBuilder = StringBuilder()
+            content.toStringArray().forEach {
+                stringBuilder.insert(0, it)
+            }
+            BookHelp.saveText(book, chapter, stringBuilder.toString())
+            ReadBook.loadContent(ReadBook.durChapterIndex, resetPageOffset = false)
+        }
+    }
+
     /**
      * 内容搜索跳转
      */

app/src/main/res/layout/dialog_chapter_change_source.xml

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/background">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/tool_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/background_menu"
+        android:elevation="5dp"
+        android:theme="?attr/actionBarStyle"
+        app:titleTextAppearance="@style/ToolbarTitle"
+        app:popupTheme="@style/AppTheme.PopupOverlay"
+        app:displayHomeAsUp="false"
+        app:fitStatusBar="false"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <io.legado.app.ui.widget.anima.RefreshProgressBar
+        android:id="@+id/refresh_progress_bar"
+        android:layout_width="match_parent"
+        android:layout_height="2dp"
+        app:layout_constraintTop_toBottomOf="@+id/tool_bar" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recycler_view"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintTop_toBottomOf="@+id/refresh_progress_bar"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+    <androidx.appcompat.widget.LinearLayoutCompat
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:background="@color/background"
+        android:visibility="gone"
+        app:layout_constraintTop_toBottomOf="@+id/tool_bar"
+        app:layout_constraintBottom_toBottomOf="parent">
+
+        <androidx.constraintlayout.utils.widget.ImageFilterView
+            android:layout_width="match_parent"
+            android:layout_height="36dp"
+            android:src="@drawable/ic_arrow_down"
+            app:tint="@color/primaryText" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/recycler_view_toc"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:layout_constraintTop_toBottomOf="@+id/refresh_progress_bar"
+            app:layout_constraintBottom_toBottomOf="parent" />
+
+    </androidx.appcompat.widget.LinearLayoutCompat>
+
+</androidx.constraintlayout.widget.ConstraintLayout>