1 files changed, 0 insertions, 80 deletions
diff --git a/packages/DocumentsUI/src/com/android/documentsui/CheckedTask.java b/packages/DocumentsUI/src/com/android/documentsui/CheckedTask.java
deleted file mode 100644
index 747eb9c51985..000000000000
--- a/packages/DocumentsUI/src/com/android/documentsui/CheckedTask.java
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.documentsui;
-
-import android.os.AsyncTask;
-
-/**
- * An {@link AsyncTask} that guards work with checks that a paired {@link Check}
- * has not yet given signals to stop progress.
- *
- * <p>Use this type of task for greater safety when executing tasks that might complete
- * after the owner of the task has explicitly given a signal to stop progress.
- *
- * <p>Also useful as tasks can be static, limiting scope, but still have access to
- * signal from the owning class.
- *
- * @template Input input type
- * @template Output output type
- */
-abstract class CheckedTask<Input, Output>
-        extends AsyncTask<Input, Void, Output> {
-
-    private Check mCheck;
-
-    public CheckedTask(Check check) {
-        mCheck = check;
-    }
-
-    /** Called prior to run being executed. Analogous to {@link AsyncTask#onPreExecute} */
-    void prepare() {}
-
-    /** Analogous to {@link AsyncTask#doInBackground} */
-    abstract Output run(Input... input);
-
-    /** Analogous to {@link AsyncTask#onPostExecute} */
-    abstract void finish(Output output);
-
-    @Override
-    final protected void onPreExecute() {
-        if (mCheck.stop()) {
-            return;
-        }
-        prepare();
-    }
-
-    @Override
-    final protected Output doInBackground(Input... input) {
-        if (mCheck.stop()) {
-            return null;
-        }
-        return run(input);
-    }
-
-    @Override
-    final protected void onPostExecute(Output result) {
-        if (mCheck.stop()) {
-            return;
-        }
-        finish(result);
-    }
-
-    @FunctionalInterface
-    interface Check {
-        boolean stop();
-    }
-}