another major rework, transaction list is fully asynchronous

[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 53fb742f9a1acf7e2cc847781bbad3cb0e2c7e5a..f1c6df01348e000947d75fb5f314ea60014de7c4 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
@@ -17,40 +17,60 @@
 
 package net.ktnx.mobileledger.ui.transaction_list;
 
+import android.app.Activity;
 import android.arch.lifecycle.ViewModel;
-import android.content.Context;
-import android.database.Cursor;
-import android.database.sqlite.SQLiteDatabase;
+import android.os.AsyncTask;
+import android.view.View;
+import android.widget.AutoCompleteTextView;
 
+import net.ktnx.mobileledger.R;
+import net.ktnx.mobileledger.async.UpdateTransactionsTask;
+import net.ktnx.mobileledger.model.Data;
 import net.ktnx.mobileledger.model.LedgerTransaction;
-import net.ktnx.mobileledger.utils.MLDB;
+import net.ktnx.mobileledger.model.ObservableValue;
 
-import java.util.ArrayList;
 import java.util.List;
 
 public class TransactionListViewModel extends ViewModel {
+    public static ObservableValue<Boolean> updating = new ObservableValue<>();
 
-    private List<LedgerTransaction> transactions;
-
-    public List<LedgerTransaction> getTransactions(Context context) {
-        if (transactions == null) {
-            transactions = new ArrayList<>();
-            reloadTransactions(context);
-        }
-
-        return transactions;
+    public static void scheduleTransactionListReload(Activity act) {
+        boolean hasFilter =
+                act.findViewById(R.id.transaction_list_account_name_filter).getVisibility() ==
+                View.VISIBLE;
+        String accFilter = hasFilter ? String.valueOf(
+                ((AutoCompleteTextView) act.findViewById(R.id.transaction_filter_account_name))
+                        .getText()) : null;
+        updating.set(true);
+        AsyncTask<String, Void, List<LedgerTransaction>> task = new UTT();
+        task.execute(accFilter);
     }
-    public void reloadTransactions(Context context) {
-        transactions.clear();
-        String sql = "SELECT id FROM transactions ORDER BY date desc, id desc";
-
-        try (SQLiteDatabase db = MLDB.getReadableDatabase(context)) {
-            try (Cursor cursor = db.rawQuery(sql, null)) {
-                while (cursor.moveToNext()) {
-                    transactions.add(new LedgerTransaction(cursor.getInt(0)));
-                }
-            }
+    public static LedgerTransaction getTransaction(int position) {
+        List<LedgerTransaction> transactions = Data.transactions.get();
+        if (position >= transactions.size()) return null;
+        return transactions.get(position);
+    }
+    public static int getTransactionCount() {
+        List<LedgerTransaction> 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);
+            updating.set(false);
+            if (list != null) Data.transactions.set(list);
+        }
+        @Override
+        protected void onCancelled(List<LedgerTransaction> ledgerTransactions) {
+            super.onCancelled(ledgerTransactions);
+            updating.set(false);
+        }
+        @Override
+        protected void onCancelled() {
+            super.onCancelled();
+            updating.set(false);
         }
-
     }
 }