47 lines
1.7 KiB
Java
47 lines
1.7 KiB
Java
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/*
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* Copyright 2014 Soichiro Kashima
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.github.ksoichiro.android.observablescrollview;
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/**
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* Callbacks for Scrollable widgets.
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*/
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public interface ObservableScrollViewCallbacks {
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/**
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* Called when the scroll change events occurred.
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* This won't be called just after the view is laid out, so if you'd like to
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* initialize the position of your views with this method, you should call this manually
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* or invoke scroll as appropriate.
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*
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* @param scrollY scroll position in Y axis
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* @param firstScroll true when this is called for the first time in the consecutive motion events
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* @param dragging true when the view is dragged and false when the view is scrolled in the inertia
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*/
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public void onScrollChanged(int scrollY, boolean firstScroll, boolean dragging);
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/**
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* Called when the down motion event occurred.
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*/
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public void onDownMotionEvent();
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/**
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* Called when the dragging ended or canceled.
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*
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* @param scrollState state to indicate the scroll direction
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*/
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public void onUpOrCancelMotionEvent(ScrollState scrollState);
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}
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