com.rocko.android.common.widget.RecyclerViewAutoScrollHelper.java Source code

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Here is the source code for com.rocko.android.common.widget.RecyclerViewAutoScrollHelper.java

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/*
 * Copyright 2015 Rocko(zhengxiaopeng).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.rocko.android.common.widget;

import android.support.v4.widget.AutoScrollHelper;
import android.support.v7.widget.RecyclerView;

/**
 * An implementation of {@link AutoScrollHelper} that knows how to scroll
 * through a {@link android.support.v7.widget.RecyclerView}.
 * <p/>
 * Created by Administrator on 2015/4/25.
 */
public class RecyclerViewAutoScrollHelper extends AutoScrollHelper {
    protected RecyclerView mTarget;

    public RecyclerViewAutoScrollHelper(RecyclerView target) {
        super(target);
        this.mTarget = target;
    }

    @Override
    public void scrollTargetBy(int deltaX, int deltaY) {
        mTarget.scrollBy(deltaX, deltaY);
    }

    @Override
    public boolean canTargetScrollHorizontally(int direction) {
        return mTarget.getLayoutManager().canScrollHorizontally();
    }

    @Override
    public boolean canTargetScrollVertically(int direction) {
        return mTarget.getLayoutManager().canScrollVertically();
    }
}