feat: 优化代码

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

@@ -16,7 +16,6 @@ import java.util.*
 
 
 class ContentView(context: Context) : FrameLayout(context) {
-    var callBack: CallBack? = null
     private var pageSize: Int = 0
 
     init {
@@ -135,8 +134,4 @@ class ContentView(context: Context) : FrameLayout(context) {
 
     val selectedText: String get() = content_text_view.selectedText
 
-    interface CallBack {
-        fun scrollToLine(line: Int)
-        fun scrollToLast()
-    }
 }

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

@@ -16,7 +16,6 @@ import io.legado.app.utils.getPrefInt
 
 class PageView(context: Context, attrs: AttributeSet) :
     FrameLayout(context, attrs),
-    ContentView.CallBack,
     DataSource {
 
     var callBack: CallBack
@@ -39,7 +38,6 @@ class PageView(context: Context, attrs: AttributeSet) :
         setWillNotDraw(false)
         pageFactory = TextPageFactory(this)
         upPageAnim(context.getPrefInt(PreferKey.pageAnim))
-        curPage.callBack = this
     }
 
     override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
@@ -199,25 +197,6 @@ class PageView(context: Context, attrs: AttributeSet) :
         return ReadBook.durChapterIndex > 0
     }
 
-    override fun scrollToLine(line: Int) {
-        if (isScrollDelegate) {
-            ReadBook.textChapter()?.let {
-                val pageIndex = it.getPageIndex(line)
-                curPage.setPageIndex(pageIndex)
-                callBack.setPageIndex(pageIndex)
-            }
-        }
-    }
-
-    override fun scrollToLast() {
-        if (isScrollDelegate) {
-            ReadBook.textChapter()?.let {
-                callBack.setPageIndex(it.lastIndex())
-                curPage.setPageIndex(it.lastIndex())
-            }
-        }
-    }
-
     interface CallBack {
 
         val isInitFinish: Boolean