X-Git-Url: https://git.ktnx.net/?p=mobile-ledger.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fnet%2Fktnx%2Fmobileledger%2Fui%2Factivity%2FNewTransactionModel.java;h=f6d556e58573c5ff2217767261f5fb70da8745dd;hp=914a478b14945bce6c6f49f5ce7e8c930d8f9172;hb=8c39affe99dc23ed494f3b70fe29ea4c3e00c2f4;hpb=593d0307aeb6e151c4f693697d7746a3f4c929e8

diff --git a/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java b/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java
index 914a478b..f6d556e5 100644
--- a/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java
+++ b/app/src/main/java/net/ktnx/mobileledger/ui/activity/NewTransactionModel.java
@@ -247,12 +247,14 @@ public class NewTransactionModel extends ViewModel {
     }
     enum ItemType {generalData, transactionRow, bottomFiller}
 
+    //==========================================================================================
+
     class Item extends Object {
         private ItemType type;
         private MutableLiveData<Date> date = new MutableLiveData<>();
         private MutableLiveData<String> description = new MutableLiveData<>();
         private LedgerTransactionAccount account;
-        private MutableLiveData<String> amountHint = new MutableLiveData<>();
+        private MutableLiveData<String> amountHint = new MutableLiveData<>(null);
         private NewTransactionModel model;
         private MutableLiveData<Boolean> editable = new MutableLiveData<>(true);
         public Item(NewTransactionModel model) {
@@ -276,20 +278,34 @@ public class NewTransactionModel extends ViewModel {
         public NewTransactionModel getModel() {
             return model;
         }
-        public boolean isEditable() {
-            ensureType(ItemType.transactionRow);
-            return this.editable.getValue();
-        }
         public void setEditable(boolean editable) {
-            ensureType(ItemType.transactionRow);
+            ensureType(ItemType.generalData, ItemType.transactionRow);
             this.editable.setValue(editable);
         }
+        private void ensureType(ItemType type1, ItemType type2) {
+            if ((type != type1) && (type != type2)) {
+                throw new RuntimeException(
+                        String.format("Actual type (%s) differs from wanted (%s or %s)", type,
+                                type1, type2));
+            }
+        }
         public String getAmountHint() {
             ensureType(ItemType.transactionRow);
             return amountHint.getValue();
         }
         public void setAmountHint(String amountHint) {
             ensureType(ItemType.transactionRow);
+
+            // avoid unnecessary triggers
+            if (amountHint == null) {
+                if (this.amountHint.getValue() == null)
+                    return;
+            }
+            else {
+                if (amountHint.equals(this.amountHint.getValue()))
+                    return;
+            }
+
             this.amountHint.setValue(amountHint);
         }
         public void observeAmountHint(@NonNull @NotNull androidx.lifecycle.LifecycleOwner owner,