Refactor history with room paging

app/src/main/java/com/hippo/ehviewer/EhDB.java

@@ -22,6 +22,7 @@ import android.net.Uri;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.paging.PagingSource;
 import androidx.room.Room;
 
 import com.hippo.ehviewer.client.data.GalleryInfo;
@@ -326,10 +327,14 @@ public class EhDB {
         dao.update(list);
     }
 
-    public static synchronized List<HistoryInfo> getHistoryLazyList() {
+    public static synchronized List<HistoryInfo> getHistoryList() {
         return db.historyDao().list();
     }
 
+    public static synchronized PagingSource<Integer, HistoryInfo> getHistoryLazyList() {
+        return db.historyDao().listLazy();
+    }
+
     public static synchronized void putHistoryInfo(GalleryInfo galleryInfo) {
         HistoryDao dao = db.historyDao();
         HistoryInfo info = dao.load(galleryInfo.gid);

app/src/main/java/com/hippo/ehviewer/dao/HistoryDao.java

@@ -1,5 +1,6 @@
 package com.hippo.ehviewer.dao;
 
+import androidx.paging.PagingSource;
 import androidx.room.Dao;
 import androidx.room.Delete;
 import androidx.room.Insert;
@@ -19,6 +20,9 @@ public interface HistoryDao extends BasicDao<HistoryInfo> {
     @Query("SELECT * FROM HISTORY ORDER BY TIME DESC LIMIT :limit OFFSET :offset")
     List<HistoryInfo> list(int offset, int limit);
 
+    @Query("SELECT * FROM HISTORY ORDER BY TIME DESC")
+    PagingSource<Integer, HistoryInfo> listLazy();
+
     @Update
     void update(HistoryInfo historyInfo);