transaction list: no crash of the transaction list is not loaded yet and an item...

[mobile-ledger.git] / app / src / main / java / net / ktnx / mobileledger / ui / transaction_list / TransactionListViewModel.java

diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java b/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java
index 89b56022689f910425ce48ed363cb9d521679531..02affd86735f85bf5710f59395e379043c0163fe 100644 (file)
--- a/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java
+++ b/app/src/main/java/net/ktnx/mobileledger/ui/transaction_list/TransactionListViewModel.java
@@ -22,34 +22,37 @@ import android.os.AsyncTask;
 
 import net.ktnx.mobileledger.async.UpdateTransactionsTask;
 import net.ktnx.mobileledger.model.Data;
-import net.ktnx.mobileledger.model.LedgerTransaction;
+import net.ktnx.mobileledger.model.TransactionListItem;
 import net.ktnx.mobileledger.utils.ObservableValue;
 
 import java.util.List;
 
 public class TransactionListViewModel extends ViewModel {
     public static ObservableValue<Boolean> updating = new ObservableValue<>();
+    public static ObservableValue<String> updateError = new ObservableValue<>();
 
     public static void scheduleTransactionListReload() {
         String filter = TransactionListFragment.accountFilter.get();
-        AsyncTask<String, Void, List<LedgerTransaction>> task = new UTT();
+        AsyncTask<String, Void, String> task = new UTT();
         task.execute(filter);
     }
-    public static LedgerTransaction getTransaction(int position) {
-        List<LedgerTransaction> transactions = Data.transactions.get();
-        if (position >= transactions.size()) return null;
+    public static TransactionListItem getTransactionListItem(int position) {
+        List<TransactionListItem> transactions = Data.transactions.get();
+        if (transactions == null) return null;
+        if (position >= transactions.size() + 1) return null;
+        if (position == transactions.size()) return new TransactionListItem();
         return transactions.get(position);
     }
     public static int getTransactionCount() {
-        List<LedgerTransaction> transactions = Data.transactions.get();
+        List<TransactionListItem> transactions = Data.transactions.get();
         if (transactions == null) return 0;
         return transactions.size();
     }
     private static class UTT extends UpdateTransactionsTask {
         @Override
-        protected void onPostExecute(List<LedgerTransaction> list) {
-            super.onPostExecute(list);
-            if (list != null) Data.transactions.set(list);
+        protected void onPostExecute(String error) {
+            super.onPostExecute(error);
+            if (error != null) updateError.set(error);
         }
     }
 }