2 files changed, 10 insertions, 106 deletions
diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainPresenter.kt b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainPresenter.kt
index cea17578d4..77a7dcaa8a 100644
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainPresenter.kt
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/MainPresenter.kt
@@ -26,7 +26,6 @@ import org.dolphinemu.dolphinemu.model.GameFileCache
 import org.dolphinemu.dolphinemu.services.GameFileCacheManager
 import org.dolphinemu.dolphinemu.utils.AfterDirectoryInitializationRunner
 import org.dolphinemu.dolphinemu.utils.BooleanSupplier
-import org.dolphinemu.dolphinemu.utils.CompletableFuture
 import org.dolphinemu.dolphinemu.utils.ContentHandler
 import org.dolphinemu.dolphinemu.utils.DirectoryInitialization
 import org.dolphinemu.dolphinemu.utils.FileBrowserHelper
@@ -34,7 +33,8 @@ import org.dolphinemu.dolphinemu.utils.PermissionsHandler
 import org.dolphinemu.dolphinemu.utils.ThreadUtil
 import org.dolphinemu.dolphinemu.utils.WiiUtils
 import java.util.Arrays
-import java.util.concurrent.ExecutionException
+import java.util.concurrent.CountDownLatch
+import java.util.concurrent.atomic.AtomicReference
 
 class MainPresenter(private val mainView: MainView, private val activity: FragmentActivity) {
     private var dirToAdd: String? = null
@@ -265,33 +265,34 @@ class MainPresenter(private val mainView: MainView, private val activity: Fragme
     }
 
     fun importWiiSave(path: String?) {
-        val canOverwriteFuture = CompletableFuture<Boolean>()
         ThreadUtil.runOnThreadAndShowResult(
             activity,
             R.string.import_in_progress,
             0,
             {
                 val canOverwrite = BooleanSupplier {
+                    val latch = CountDownLatch(1)
+                    val decision = AtomicReference<Boolean>()
                     activity.runOnUiThread {
                         MaterialAlertDialogBuilder(activity)
                             .setMessage(R.string.wii_save_exists)
                             .setCancelable(false)
                             .setPositiveButton(R.string.yes) { _: DialogInterface?, _: Int ->
-                                canOverwriteFuture.complete(true)
+                                decision.set(true)
+                                latch.countDown()
                             }
                             .setNegativeButton(R.string.no) { _: DialogInterface?, _: Int ->
-                                canOverwriteFuture.complete(false)
+                                decision.set(false)
+                                latch.countDown()
                             }
                             .show()
                     }
                     try {
-                        return@BooleanSupplier canOverwriteFuture.get()
-                    } catch (e: ExecutionException) {
-                        // Shouldn't happen
-                        throw RuntimeException(e)
+                        latch.await()
                     } catch (e: InterruptedException) {
                         throw RuntimeException(e)
                     }
+                    decision.get() ?: false
                 }
 
                 val message: Int = when (WiiUtils.importWiiSave(path!!, canOverwrite)) {
diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/CompletableFuture.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/CompletableFuture.java
deleted file mode 100644
index 1b3c450534..0000000000
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/CompletableFuture.java
+++ /dev/null
@@ -1,97 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package org.dolphinemu.dolphinemu.utils;
-
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.Future;
-import java.util.concurrent.TimeUnit;
-import java.util.concurrent.TimeoutException;
-import java.util.concurrent.locks.Condition;
-import java.util.concurrent.locks.Lock;
-import java.util.concurrent.locks.ReentrantLock;
-
-/**
- * Simplified re-implementation of a subset of {@link java.util.concurrent.CompletableFuture}.
- * Replace this class with that class once we have full Java 8 support (once we require API 24).
- */
-public class CompletableFuture<T> implements Future<T>
-{
-  private final Lock lock = new ReentrantLock();
-  private final Condition done = lock.newCondition();
-
-  private boolean isDone = false;
-  private T result = null;
-
-  @Override
-  public boolean cancel(boolean mayInterruptIfRunning)
-  {
-    throw new UnsupportedOperationException();
-  }
-
-  @Override
-  public boolean isCancelled()
-  {
-    return false;
-  }
-
-  @Override
-  public boolean isDone()
-  {
-    return isDone;
-  }
-
-  @Override
-  public T get() throws ExecutionException, InterruptedException
-  {
-    lock.lock();
-    try
-    {
-      while (!isDone)
-        done.await();
-
-      return result;
-    }
-    finally
-    {
-      lock.unlock();
-    }
-  }
-
-  @Override
-  public T get(long timeout, TimeUnit unit)
-          throws ExecutionException, InterruptedException, TimeoutException
-  {
-    lock.lock();
-    try
-    {
-      while (!isDone)
-      {
-        if (!done.await(timeout, unit))
-          throw new TimeoutException();
-      }
-
-      return result;
-    }
-    finally
-    {
-      lock.unlock();
-    }
-  }
-
-  public boolean complete(T value)
-  {
-    lock.lock();
-    try
-    {
-      boolean wasDone = isDone;
-      result = value;
-      isDone = true;
-      done.signalAll();
-      return !wasDone;
-    }
-    finally
-    {
-      lock.unlock();
-    }
-  }
-}