优化

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

@@ -16,8 +16,11 @@ interface TxtTocRuleDao {
     @get:Query("select * from txtTocRules where enable = 1 order by serialNumber")
     val enabled: List<TxtTocRule>
 
+    @get:Query("select ifNull(min(serialNumber), 0) from txtTocRules")
+    val minOrder: Int
+
     @get:Query("select ifNull(max(serialNumber), 0) from txtTocRules")
-    val lastOrderNum: Int
+    val maxOrder: Int
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insert(vararg rule: TxtTocRule)

app/src/main/java/io/legado/app/ui/book/local/rule/TxtTocRuleActivity.kt

@@ -108,15 +108,15 @@ class TxtTocRuleActivity : VMBaseActivity<ActivityTxtTocRuleBinding, TxtTocRuleV
     }
 
     override fun toTop(source: TxtTocRule) {
-
+        viewModel.toTop(source)
     }
 
     override fun toBottom(source: TxtTocRule) {
-
+        viewModel.toBottom(source)
     }
 
     override fun upOrder() {
-
+        viewModel.upOrder()
     }
 
     override fun upCountView() {

app/src/main/java/io/legado/app/ui/book/local/rule/TxtTocRuleViewModel.kt

@@ -53,4 +53,34 @@ class TxtTocRuleViewModel(app: Application) : BaseViewModel(app) {
         }
     }
 
+    fun toTop(vararg rules: TxtTocRule) {
+        execute {
+            val minOrder = appDb.txtTocRuleDao.minOrder - 1
+            rules.forEachIndexed { index, source ->
+                source.serialNumber = minOrder - index
+            }
+            appDb.txtTocRuleDao.update(*rules)
+        }
+    }
+
+    fun toBottom(vararg sources: TxtTocRule) {
+        execute {
+            val maxOrder = appDb.txtTocRuleDao.maxOrder + 1
+            sources.forEachIndexed { index, source ->
+                source.serialNumber = maxOrder + index
+            }
+            appDb.txtTocRuleDao.update(*sources)
+        }
+    }
+
+    fun upOrder() {
+        execute {
+            val sources = appDb.txtTocRuleDao.all
+            for ((index: Int, source: TxtTocRule) in sources.withIndex()) {
+                source.serialNumber = index + 1
+            }
+            appDb.txtTocRuleDao.update(*sources.toTypedArray())
+        }
+    }
+
 }

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

@@ -16,7 +16,7 @@ class TocRegexViewModel(application: Application) : BaseViewModel(application) {
     fun saveRule(rule: TxtTocRule) {
         execute {
             if (rule.serialNumber < 0) {
-                rule.serialNumber = appDb.txtTocRuleDao.lastOrderNum + 1
+                rule.serialNumber = appDb.txtTocRuleDao.maxOrder + 1
             }
             appDb.txtTocRuleDao.insert(rule)
         }