添加单章换源

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

@@ -265,29 +265,20 @@ object BookHelp {
      */
     fun getDurChapter(
         oldDurChapterIndex: Int,
-        oldChapterListSize: Int,
         oldDurChapterName: String?,
-        newChapterList: List<BookChapter>
+        newChapterList: List<BookChapter>,
+        oldChapterListSize: Int = 0
     ): Int {
-        if (oldChapterListSize == 0) return oldDurChapterIndex
+        if (oldDurChapterIndex == 0) return oldDurChapterIndex
         if (newChapterList.isEmpty()) return oldDurChapterIndex
         val oldChapterNum = getChapterNum(oldDurChapterName)
         val oldName = getPureChapterName(oldDurChapterName)
         val newChapterSize = newChapterList.size
-        val min = max(
-            0,
-            min(
-                oldDurChapterIndex,
-                oldDurChapterIndex - oldChapterListSize + newChapterSize
-            ) - 10
-        )
-        val max = min(
-            newChapterSize - 1,
-            max(
-                oldDurChapterIndex,
-                oldDurChapterIndex - oldChapterListSize + newChapterSize
-            ) + 10
-        )
+        val durIndex =
+            if (oldChapterListSize == 0) oldDurChapterIndex
+            else oldDurChapterIndex * oldChapterListSize / newChapterSize
+        val min = max(0, min(oldDurChapterIndex, durIndex) - 10)
+        val max = min(newChapterSize - 1, max(oldDurChapterIndex, durIndex) + 10)
         var nameSim = 0.0
         var newIndex = 0
         var newNum = 0

app/src/main/java/io/legado/app/ui/book/audio/AudioPlayViewModel.kt

@@ -116,9 +116,9 @@ class AudioPlayViewModel(application: Application) : BaseViewModel(application)
         execute {
             book.durChapterIndex = BookHelp.getDurChapter(
                 book.durChapterIndex,
-                oldTocSize,
                 book.durChapterTitle,
-                chapters
+                chapters,
+                oldTocSize
             )
             book.durChapterTitle = chapters[book.durChapterIndex].title
             appDb.bookDao.update(book)

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

@@ -21,6 +21,7 @@ import io.legado.app.data.entities.BookSource
 import io.legado.app.data.entities.SearchBook
 import io.legado.app.databinding.DialogChapterChangeSourceBinding
 import io.legado.app.help.AppConfig
+import io.legado.app.help.BookHelp
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.ui.book.source.edit.BookSourceEditActivity
 import io.legado.app.ui.book.source.manage.BookSourceActivity
@@ -53,6 +54,16 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_chapter_c
         registerForActivityResult(StartActivityContract(BookSourceEditActivity::class.java)) {
             viewModel.startSearch()
         }
+    private val tocSuccess: (toc: List<BookChapter>) -> Unit = {
+        tocAdapter.durChapterIndex =
+            BookHelp.getDurChapter(viewModel.chapterIndex, viewModel.chapterTitle, it)
+        binding.loadingToc.hide()
+        tocAdapter.setItems(it)
+        binding.recyclerViewToc.scrollToPosition(tocAdapter.durChapterIndex - 5)
+    }
+    private val contentSuccess: (content: String) -> Unit = {
+        callBack?.replaceContent(it)
+    }
     private val searchBookAdapter by lazy {
         ChangeChapterSourceAdapter(requireContext(), viewModel, this)
     }
@@ -211,13 +222,6 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_chapter_c
         return false
     }
 
-    private val tocSuccess: (toc: List<BookChapter>) -> Unit = {
-        tocAdapter.durChapterIndex = viewModel.chapterIndex
-        binding.loadingToc.hide()
-        tocAdapter.setItems(it)
-        binding.recyclerViewToc.scrollToPosition(tocAdapter.durChapterIndex - 5)
-    }
-
     override fun openToc(searchBook: SearchBook) {
         this.searchBook = searchBook
         tocAdapter.setItems(null)
@@ -259,8 +263,12 @@ class ChangeChapterSourceDialog() : BaseDialogFragment(R.layout.dialog_chapter_c
         }
     }
 
-    override fun clickChapter(bookChapter: BookChapter) {
-        TODO("Not yet implemented")
+    override fun clickChapter(bookChapter: BookChapter, nextChapterUrl: String?) {
+        searchBook?.let {
+            viewModel.getContent(it.toBook(), bookChapter, nextChapterUrl, contentSuccess) { msg ->
+                toastOnUi(msg)
+            }
+        }
     }
 
     private fun changeSource(searchBook: SearchBook) {

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

@@ -294,6 +294,24 @@ class ChangeChapterSourceViewModel(application: Application) : BaseViewModel(app
         }
     }
 
+    fun getContent(
+        book: Book,
+        chapter: BookChapter,
+        nextChapterUrl: String?,
+        success: (content: String) -> Unit,
+        error: (msg: String) -> Unit
+    ) {
+        execute {
+            val bookSource = appDb.bookSourceDao.getBookSource(book.origin)
+                ?: throw NoStackTraceException("书源不存在")
+            WebBook.getContentAwait(this, bookSource, book, chapter, nextChapterUrl, false)
+        }.onSuccess {
+            success.invoke(it)
+        }.onError {
+            error.invoke(it.localizedMessage ?: "获取正文出错")
+        }
+    }
+
     fun disableSource(searchBook: SearchBook) {
         execute {
             appDb.bookSourceDao.getBookSource(searchBook.origin)?.let { source ->

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

@@ -59,12 +59,12 @@ class ChangeChapterTocAdapter(context: Context, val callback: Callback) :
     override fun registerListener(holder: ItemViewHolder, binding: ItemChapterListBinding) {
         holder.itemView.setOnClickListener {
             getItem(holder.layoutPosition)?.let {
-                callback.clickChapter(it)
+                callback.clickChapter(it, getItem(holder.layoutPosition + 1)?.url)
             }
         }
     }
 
     interface Callback {
-        fun clickChapter(bookChapter: BookChapter)
+        fun clickChapter(bookChapter: BookChapter, nextChapterUrl: String?)
     }
 }

app/src/main/java/io/legado/app/ui/book/info/BookInfoViewModel.kt

@@ -195,9 +195,9 @@ class BookInfoViewModel(application: Application) : BaseViewModel(application) {
         execute {
             book.durChapterIndex = BookHelp.getDurChapter(
                 book.durChapterIndex,
-                oldTocSize,
                 book.durChapterTitle,
-                chapters
+                chapters,
+                oldTocSize
             )
             book.durChapterTitle = chapters[book.durChapterIndex].title
             if (inBookshelf) {

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

@@ -185,9 +185,9 @@ class ReadBookViewModel(application: Application) : BaseViewModel(application) {
             val oldBook = ReadBook.book!!
             book.durChapterIndex = BookHelp.getDurChapter(
                 oldBook.durChapterIndex,
-                oldBook.totalChapterNum,
                 oldBook.durChapterTitle,
-                chapters
+                chapters,
+                oldBook.totalChapterNum
             )
             book.durChapterTitle = chapters[book.durChapterIndex].title
             oldBook.changeTo(book)

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

@@ -60,8 +60,8 @@
 
         <io.legado.app.ui.widget.anima.RotateLoading
             android:id="@+id/loading_toc"
-            android:layout_width="36dp"
-            android:layout_height="36dp"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
             android:visibility="gone"
             app:layout_constraintTop_toTopOf="@+id/recycler_view_toc"
             app:layout_constraintLeft_toLeftOf="@+id/recycler_view_toc"