NotifyingScrollView.java

/*
 * Copyright 2014 Prateek Srivastava
 *
 * 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.f2prateek.couchpotato.ui.widget;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ScrollView;

public class NotifyingScrollView extends ScrollView {

  public interface OnScrollChangedListener {
    void onScrollChanged(ScrollView who, int l, int t, int oldl, int oldt);
  }

  private OnScrollChangedListener onScrollChangedListener;

  public NotifyingScrollView(Context context) {
    super(context);
  }

  public NotifyingScrollView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }

  public NotifyingScrollView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }

  @Override
  protected void onScrollChanged(int l, int t, int oldl, int oldt) {
    super.onScrollChanged(l, t, oldl, oldt);
    if (onScrollChangedListener != null) {
      onScrollChangedListener.onScrollChanged(this, l, t, oldl, oldt);
    }
  }

  public void setOnScrollChangedListener(OnScrollChangedListener listener) {
    onScrollChangedListener = listener;
  }
}