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 18 package com.android.mail.browse; 19 20 public 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
