Eliminate any traces of Java in app

app/src/main/java/com/topjohnwu/magisk/model/worker/DelegateWorker.java

@@ -1,84 +0,0 @@
-package com.topjohnwu.magisk.model.worker;
-
-import android.content.Context;
-import android.net.Network;
-import android.net.Uri;
-
-import androidx.annotation.MainThread;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.annotation.RequiresApi;
-import androidx.work.Data;
-import androidx.work.ListenableWorker;
-
-import com.google.common.util.concurrent.ListenableFuture;
-
-import java.util.List;
-import java.util.Set;
-import java.util.UUID;
-
-public abstract class DelegateWorker {
-
-    private ListenableWorker worker;
-
-    @NonNull
-    public abstract ListenableWorker.Result doWork();
-
-    public void onStopped() {}
-
-    public void setActualWorker(ListenableWorker w) {
-        worker = w;
-    }
-
-    @NonNull
-    public Context getApplicationContext() {
-        return worker.getApplicationContext();
-    }
-
-    @NonNull
-    public UUID getId() {
-        return worker.getId();
-    }
-
-    @NonNull
-    public Data getInputData() {
-        return worker.getInputData();
-    }
-
-    @NonNull
-    public Set<String> getTags() {
-        return worker.getTags();
-    }
-
-    @NonNull
-    @RequiresApi(24)
-    public List<Uri> getTriggeredContentUris() {
-        return worker.getTriggeredContentUris();
-    }
-
-    @NonNull
-    @RequiresApi(24)
-    public List<String> getTriggeredContentAuthorities() {
-        return worker.getTriggeredContentAuthorities();
-    }
-
-    @Nullable
-    @RequiresApi(28)
-    public Network getNetwork() {
-        return worker.getNetwork();
-    }
-
-    public int getRunAttemptCount() {
-        return worker.getRunAttemptCount();
-    }
-
-    @NonNull
-    @MainThread
-    public ListenableFuture<ListenableWorker.Result> startWork() {
-        return worker.startWork();
-    }
-
-    public boolean isStopped() {
-        return worker.isStopped();
-    }
-}

app/src/main/java/com/topjohnwu/magisk/model/worker/DelegateWorker.kt

@@ -0,0 +1,59 @@
+package com.topjohnwu.magisk.model.worker
+
+import android.content.Context
+import android.net.Network
+import android.net.Uri
+import androidx.annotation.MainThread
+import androidx.annotation.RequiresApi
+import androidx.work.Data
+import androidx.work.ListenableWorker
+import com.google.common.util.concurrent.ListenableFuture
+import java.util.*
+
+abstract class DelegateWorker {
+
+    private lateinit var worker: ListenableWorker
+
+    val applicationContext: Context
+        get() = worker.applicationContext
+
+    val id: UUID
+        get() = worker.id
+
+    val inputData: Data
+        get() = worker.inputData
+
+    val tags: Set<String>
+        get() = worker.tags
+
+    val triggeredContentUris: List<Uri>
+        @RequiresApi(24)
+        get() = worker.triggeredContentUris
+
+    val triggeredContentAuthorities: List<String>
+        @RequiresApi(24)
+        get() = worker.triggeredContentAuthorities
+
+    val network: Network?
+        @RequiresApi(28)
+        get() = worker.network
+
+    val runAttemptCount: Int
+        get() = worker.runAttemptCount
+
+    val isStopped: Boolean
+        get() = worker.isStopped
+
+    abstract fun doWork(): ListenableWorker.Result
+
+    fun onStopped() {}
+
+    fun attachWorker(w: ListenableWorker) {
+        worker = w
+    }
+
+    @MainThread
+    fun startWork(): ListenableFuture<ListenableWorker.Result> {
+        return worker.startWork()
+    }
+}