X-Git-Url: https://git.ktnx.net/?p=mobile-ledger.git;a=blobdiff_plain;f=app%2Fsrc%2Fmain%2Fjava%2Fnet%2Fktnx%2Fmobileledger%2Futils%2FObservableList.java;h=b5ddb8780a368bcd1166061faf8120a276786de3;hp=eac023767186d668583be3c7bcd9328547d4a9e4;hb=b29d3473e0c0516e15d2f5ac470b97700322e9dc;hpb=7165b89c8ff2b9d8f69e02354197127ec27a4a47

diff --git a/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java b/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java
index eac02376..b5ddb878 100644
--- a/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java
+++ b/app/src/main/java/net/ktnx/mobileledger/utils/ObservableList.java
@@ -20,6 +20,8 @@ package net.ktnx.mobileledger.utils;
 import android.os.Build;
 import android.util.Log;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.util.Collection;
 import java.util.Comparator;
 import java.util.Iterator;
@@ -40,14 +42,21 @@ import androidx.annotation.RequiresApi;
 public class ObservableList<T> extends Observable implements List<T> {
     private List<T> list;
     private ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
+    private int notificationBlocks = 0;
+    private boolean notificationWasBlocked = false;
     public ObservableList(List<T> list) {
         this.list = list;
     }
     private void forceNotify() {
+        if (notificationBlocked()) return;
         setChanged();
         notifyObservers();
     }
+    private boolean notificationBlocked() {
+        return notificationWasBlocked = (notificationBlocks > 0);
+    }
     private void forceNotify(int index) {
+        if (notificationBlocked()) return;
         setChanged();
         notifyObservers(index);
     }
@@ -203,21 +212,25 @@ public class ObservableList<T> extends Observable implements List<T> {
             return list.lastIndexOf(o);
         }
     }
+    @NotNull
     public ListIterator<T> listIterator() {
         if (!lock.isWriteLockedByCurrentThread()) throw new RuntimeException(
                 "Iterators break encapsulation and ignore locking. Write-lock first");
         return list.listIterator();
     }
+    @NotNull
     public ListIterator<T> listIterator(int index) {
         if (!lock.isWriteLockedByCurrentThread()) throw new RuntimeException(
                 "Iterators break encapsulation and ignore locking. Write-lock first");
         return list.listIterator(index);
     }
+    @NotNull
     public List<T> subList(int fromIndex, int toIndex) {
         try (LockHolder lh = lockForReading()) {
             return list.subList(fromIndex, toIndex);
         }
     }
+    @NotNull
     @RequiresApi(api = Build.VERSION_CODES.N)
     public Spliterator<T> spliterator() {
         if (!lock.isWriteLockedByCurrentThread()) throw new RuntimeException(
@@ -291,4 +304,11 @@ public class ObservableList<T> extends Observable implements List<T> {
         rLock.lock();
         return new LockHolder(rLock);
     }
+    public void blockNotifications() {
+        notificationBlocks++;
+    }
+    public void unblockNotifications() {
+        notificationBlocks--;
+        if ((notificationBlocks == 0) && notificationWasBlocked) notifyObservers();
+    }
 }
\ No newline at end of file