Attempt to implement Nested Scrollable PdfViewer

NestedScrollablePdfViewer.java

package br.com.feinstein.sidur.views;

import android.content.Context;
import android.support.annotation.Nullable;
import android.support.v4.view.NestedScrollingChild2;
import android.support.v4.view.NestedScrollingChildHelper;
import android.util.AttributeSet;

import com.github.barteksc.pdfviewer.PDFView;

public class NestedScrollablePdfViewer extends PDFView implements NestedScrollingChild2 {
    private final NestedScrollingChildHelper nestedScrollingChildHelper;

    /**
     * Construct the initial view
     *
     * @param context
     * @param set
     */
    public NestedScrollablePdfViewer(Context context, AttributeSet set) {
        super(context, set);
        nestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    }

    @Override
    public boolean startNestedScroll(int axes, int type) {
        return nestedScrollingChildHelper.startNestedScroll(axes, type);
    }

    @Override
    public void stopNestedScroll(int type) {
        nestedScrollingChildHelper.stopNestedScroll(type);
    }

    @Override
    public boolean hasNestedScrollingParent(int type) {
        return nestedScrollingChildHelper.hasNestedScrollingParent(type);
    }

    @Override
    public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, @Nullable int[] offsetInWindow, int type) {
        return nestedScrollingChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, offsetInWindow, type);
    }

    @Override
    public boolean dispatchNestedPreScroll(int dx, int dy, @Nullable int[] consumed, @Nullable int[] offsetInWindow, int type) {
        return nestedScrollingChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow, type);
    }

    @Override
    public void setNestedScrollingEnabled(boolean enabled) {
        nestedScrollingChildHelper.setNestedScrollingEnabled(enabled);
    }

    @Override
    public boolean isNestedScrollingEnabled() {
        return nestedScrollingChildHelper.isNestedScrollingEnabled();
    }

    @Override
    public boolean startNestedScroll(int axes) {
        return nestedScrollingChildHelper.startNestedScroll(axes);
    }

    @Override
    public void stopNestedScroll() {
        nestedScrollingChildHelper.stopNestedScroll();
    }

    @Override
    public boolean hasNestedScrollingParent() {
        return nestedScrollingChildHelper.hasNestedScrollingParent();
    }

    @Override
    public boolean dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, @Nullable int[] offsetInWindow) {
        return nestedScrollingChildHelper.dispatchNestedScroll(dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed, offsetInWindow);
    }

    @Override
    public boolean dispatchNestedPreScroll(int dx, int dy, @Nullable int[] consumed, @Nullable int[] offsetInWindow) {
        return nestedScrollingChildHelper.dispatchNestedPreScroll(dx, dy, consumed, offsetInWindow);
    }

    @Override
    public boolean dispatchNestedFling(float velocityX, float velocityY, boolean consumed) {
        return nestedScrollingChildHelper.dispatchNestedFling(velocityX, velocityY, consumed);
    }

    @Override
    public boolean dispatchNestedPreFling(float velocityX, float velocityY) {
        return nestedScrollingChildHelper.dispatchNestedPreFling(velocityX, velocityY);
    }
}