ScrollNotifier.java revision bb6f0504c1607c89d9a3dd3e6023f36d61837016 
1/*
2 * Copyright (C) 2012 Google Inc.
3 * Licensed to The Android Open Source Project.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package com.android.mail.browse;
19
20public interface ScrollNotifier {
21    public interface ScrollListener {
22        void onNotifierScroll(int y);
23    }
24
25    void addScrollListener(ScrollListener l);
26    void removeScrollListener(ScrollListener l);
27
28    int computeVerticalScrollRange();
29    int computeVerticalScrollExtent();
30    int computeVerticalScrollOffset();
31    int computeHorizontalScrollRange();
32    int computeHorizontalScrollExtent();
33    int computeHorizontalScrollOffset();
34}
35