57 lines
1.7 KiB
Java
57 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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import android.view.ViewGroup;
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/**
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* Provides common API for observable and scrollable widgets.
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*/
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public interface Scrollable {
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/**
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* Sets a callback listener.
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*
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* @param listener listener to set
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*/
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void setScrollViewCallbacks(ObservableScrollViewCallbacks listener);
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/**
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* Scrolls vertically to the absolute Y.
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* Implemented classes are expected to scroll to the exact Y pixels from the top,
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* but it depends on the type of the widget.
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*
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* @param y vertical position to scroll to
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*/
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void scrollVerticallyTo(int y);
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/**
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* Returns the current Y of the scrollable view.
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*
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* @return current Y pixel
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*/
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int getCurrentScrollY();
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/**
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* Sets a touch motion event delegation ViewGroup.
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* This is used to pass motion events back to parent view.
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* It's up to the implementation classes whether or not it works.
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*
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* @param viewGroup ViewGroup object to dispatch motion events
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*/
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void setTouchInterceptionViewGroup(ViewGroup viewGroup);
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}
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