Moving more classes from contacts into dialer.

- These classes are only used by dialer code.
- Fixed import order.

Bug: 6993891
Change-Id: I7941a029989c4793b766fdc77a4666f9f99b750a

1 files changed, 60 insertions, 0 deletions

diff --git a/src/com/android/dialer/util/EmptyLoader.java b/src/com/android/dialer/util/EmptyLoader.java
new file mode 100644
index 000000000..dd4c0a330
--- /dev/null
+++ b/src/com/android/dialer/util/EmptyLoader.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2011 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.dialer.util;
+
+import android.app.LoaderManager.LoaderCallbacks;
+import android.content.Context;
+import android.content.Loader;
+import android.os.Bundle;
+
+/**
+ * A {@link Loader} only used to make use of the {@link android.app.Fragment#setStartDeferred}
+ * feature from an old-style fragment which doesn't use {@link Loader}s to load data.
+ *
+ * This loader never delivers results.  A caller fragment must destroy it when deferred fragments
+ * should be started.
+ */
+public class EmptyLoader extends Loader<Object> {
+    public EmptyLoader(Context context) {
+        super(context);
+    }
+
+    /**
+     * {@link LoaderCallbacks} which just generates {@link EmptyLoader}.  {@link #onLoadFinished}
+     * and {@link #onLoaderReset} are no-op.
+     */
+    public static class Callback implements LoaderCallbacks<Object> {
+        private final Context mContext;
+
+        public Callback(Context context) {
+            mContext = context.getApplicationContext();
+        }
+
+        @Override
+        public Loader<Object> onCreateLoader(int id, Bundle args) {
+            return new EmptyLoader(mContext);
+        }
+
+        @Override
+        public void onLoadFinished(Loader<Object> loader, Object data) {
+        }
+
+        @Override
+        public void onLoaderReset(Loader<Object> loader) {
+        }
+    }
+}