添加源地址订阅功能

app/src/main/java/io/legado/app/data/AppDatabase.kt

@@ -206,7 +206,13 @@ abstract class AppDatabase : RoomDatabase() {
 
         private val migration_24_25 = object : Migration(24, 25) {
             override fun migrate(database: SupportSQLiteDatabase) {
-                database.execSQL("CREATE TABLE IF NOT EXISTS `sourceSubs` (`id` INTEGER NOT NULL, `name` TEXT NOT NULL, `url` TEXT NOT NULL, `type` INTEGER NOT NULL, PRIMARY KEY(`id`))")
+                database.execSQL(
+                    """
+                    CREATE TABLE IF NOT EXISTS `sourceSubs` 
+                    (`id` INTEGER NOT NULL, `name` TEXT NOT NULL, `url` TEXT NOT NULL, `type` INTEGER NOT NULL, `customOrder` INTEGER NOT NULL, 
+                    PRIMARY KEY(`id`))
+                """
+                )
             }
         }
     }

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

@@ -7,16 +7,21 @@ import io.legado.app.data.entities.SourceSub
 @Dao
 interface SourceSubDao {
 
-    @get:Query("select * from sourceSubs")
+    @get:Query("select * from sourceSubs order by customOrder")
     val all: List<SourceSub>
 
-    @Query("select * from sourceSubs")
+    @Query("select * from sourceSubs order by customOrder")
     fun observeAll(): LiveData<List<SourceSub>>
 
+    @get:Query("select customOrder from sourceSubs order by customOrder limit 0,1")
+    val maxOrder: Int
+
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insert(vararg sourceSub: SourceSub)
 
     @Delete
     fun delete(vararg sourceSub: SourceSub)
 
+    @Update
+    fun update(vararg sourceSub: SourceSub)
 }

app/src/main/java/io/legado/app/data/entities/SourceSub.kt

@@ -9,7 +9,8 @@ data class SourceSub(
     val id: Long = System.currentTimeMillis(),
     var name: String = "",
     var url: String = "",
-    var type: Int = 0
+    var type: Int = 0,
+    var customOrder: Int = 0
 ) {
 
     fun setType(type: Type) {

app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt

@@ -118,8 +118,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
         binding.recyclerView.addItemDecoration(VerticalDivider(this))
         adapter = RssSourceAdapter(this, this)
         binding.recyclerView.adapter = adapter
-        val itemTouchCallback = ItemTouchCallback(adapter)
-        itemTouchCallback.isCanDrag = true
+
         val dragSelectTouchHelper: DragSelectTouchHelper =
             DragSelectTouchHelper(adapter.initDragSelectTouchHelperCallback()).setSlideArea(16, 50)
         dragSelectTouchHelper.attachToRecyclerView(binding.recyclerView)
@@ -127,6 +126,8 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
         dragSelectTouchHelper.activeSlideSelect()
 
         // Note: need judge selection first, so add ItemTouchHelper after it.
+        val itemTouchCallback = ItemTouchCallback(adapter)
+        itemTouchCallback.isCanDrag = true
         ItemTouchHelper(itemTouchCallback).attachToRecyclerView(binding.recyclerView)
     }
 

app/src/main/java/io/legado/app/ui/rss/subscription/SourceSubActivity.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import androidx.lifecycle.LiveData
+import androidx.recyclerview.widget.ItemTouchHelper
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseActivity
@@ -13,6 +14,7 @@ import io.legado.app.databinding.DialogSourceSubEditBinding
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.ui.association.ImportBookSourceActivity
 import io.legado.app.ui.association.ImportRssSourceActivity
+import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import org.jetbrains.anko.startActivity
@@ -47,6 +49,9 @@ class SourceSubActivity : BaseActivity<ActivitySourceSubBinding>(),
     private fun initView() {
         adapter = SourceSubAdapter(this, this)
         binding.recyclerView.adapter = adapter
+        val itemTouchCallback = ItemTouchCallback(adapter)
+        itemTouchCallback.isCanDrag = true
+        ItemTouchHelper(itemTouchCallback).attachToRecyclerView(binding.recyclerView)
     }
 
     private fun initData() {
@@ -99,4 +104,21 @@ class SourceSubActivity : BaseActivity<ActivitySourceSubBinding>(),
             App.db.sourceSubDao().delete(sourceSub)
         }
     }
+
+    override fun updateSourceSub(vararg sourceSub: SourceSub) {
+        launch(IO) {
+            App.db.sourceSubDao().update(*sourceSub)
+        }
+    }
+
+    override fun upOrder() {
+        launch(IO) {
+            val sourceSubs = App.db.sourceSubDao().all
+            for ((index: Int, sourceSub: SourceSub) in sourceSubs.withIndex()) {
+                sourceSub.customOrder = index + 1
+            }
+            App.db.sourceSubDao().update(*sourceSubs.toTypedArray())
+        }
+    }
+
 }

app/src/main/java/io/legado/app/ui/rss/subscription/SourceSubAdapter.kt

@@ -4,16 +4,19 @@ import android.content.Context
 import android.view.View
 import android.view.ViewGroup
 import android.widget.PopupMenu
+import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.R
 import io.legado.app.base.adapter.ItemViewHolder
 import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.data.entities.SourceSub
 import io.legado.app.databinding.ItemSourceSubBinding
+import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import org.jetbrains.anko.sdk27.listeners.onClick
+import java.util.*
 
 class SourceSubAdapter(context: Context, val callBack: Callback) :
-    SimpleRecyclerAdapter<SourceSub, ItemSourceSubBinding>(context) {
-
+    SimpleRecyclerAdapter<SourceSub, ItemSourceSubBinding>(context),
+    ItemTouchCallback.Callback {
 
     override fun convert(
         holder: ItemViewHolder,
@@ -55,10 +58,40 @@ class SourceSubAdapter(context: Context, val callBack: Callback) :
         return ItemSourceSubBinding.inflate(inflater, parent, false)
     }
 
+    override fun onMove(srcPosition: Int, targetPosition: Int): Boolean {
+        val srcItem = getItem(srcPosition)
+        val targetItem = getItem(targetPosition)
+        if (srcItem != null && targetItem != null) {
+            if (srcItem.customOrder == targetItem.customOrder) {
+                callBack.upOrder()
+            } else {
+                val srcOrder = srcItem.customOrder
+                srcItem.customOrder = targetItem.customOrder
+                targetItem.customOrder = srcOrder
+                movedItems.add(srcItem)
+                movedItems.add(targetItem)
+            }
+        }
+        Collections.swap(getItems(), srcPosition, targetPosition)
+        notifyItemMoved(srcPosition, targetPosition)
+        return true
+    }
+
+    private val movedItems = hashSetOf<SourceSub>()
+
+    override fun onClearView(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder) {
+        if (movedItems.isNotEmpty()) {
+            callBack.updateSourceSub(*movedItems.toTypedArray())
+            movedItems.clear()
+        }
+    }
+
     interface Callback {
         fun openSubscription(sourceSub: SourceSub)
         fun editSubscription(sourceSub: SourceSub)
         fun delSubscription(sourceSub: SourceSub)
+        fun updateSourceSub(vararg sourceSub: SourceSub)
+        fun upOrder()
     }
 
 }