66 lines
2.4 KiB
Java
66 lines
2.4 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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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.android.inputmethod.keyboard.internal;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.widget.ScrollView;
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/**
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* This is an extended {@link ScrollView} that can notify
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* {@link ScrollView#onScrollChanged(int,int,int,int} and
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* {@link ScrollView#onOverScrolled(int,int,int,int)} to a content view.
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*/
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public class ScrollViewWithNotifier extends ScrollView {
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private ScrollListener mScrollListener = EMPTY_LISTER;
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public interface ScrollListener {
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public void notifyScrollChanged(int scrollX, int scrollY, int oldX, int oldY);
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public void notifyOverScrolled(int scrollX, int scrollY, boolean clampedX,
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boolean clampedY);
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}
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private static final ScrollListener EMPTY_LISTER = new ScrollListener() {
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@Override
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public void notifyScrollChanged(int scrollX, int scrollY, int oldX, int oldY) {}
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@Override
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public void notifyOverScrolled(int scrollX, int scrollY, boolean clampedX,
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boolean clampedY) {}
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};
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public ScrollViewWithNotifier(final Context context, final AttributeSet attrs) {
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super(context, attrs);
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}
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@Override
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protected void onScrollChanged(final int scrollX, final int scrollY, final int oldX,
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final int oldY) {
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super.onScrollChanged(scrollX, scrollY, oldX, oldY);
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mScrollListener.notifyScrollChanged(scrollX, scrollY, oldX, oldY);
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}
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@Override
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protected void onOverScrolled(final int scrollX, final int scrollY, final boolean clampedX,
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final boolean clampedY) {
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super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);
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mScrollListener.notifyOverScrolled(scrollX, scrollY, clampedX, clampedY);
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}
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public void setScrollListener(final ScrollListener listener) {
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mScrollListener = listener;
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}
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}
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