Merge "PrintSpooler: Add bottom padding to preview area" into main

package com.android.printspooler.ui;

import android.graphics.Insets;

import android.os.Handler;

import android.os.Looper;

import android.os.Message;

import android.os.ParcelFileDescriptor;

import android.print.PageRange;

import android.print.PrintAttributes.MediaSize;

import android.print.PrintAttributes.Margins;

import android.print.PrintAttributes.MediaSize;

import android.print.PrintDocumentInfo;

import android.support.v7.widget.GridLayoutManager;

import android.support.v7.widget.RecyclerView;

import android.support.v7.widget.RecyclerView.ViewHolder;

import android.support.v7.widget.RecyclerView.LayoutManager;

import android.support.v7.widget.RecyclerView.ViewHolder;

import android.view.View;

import android.view.WindowInsets;

import com.android.internal.os.SomeArgs;

import com.android.printspooler.R;

import com.android.printspooler.model.MutexFileProvider;

import com.android.printspooler.widget.PrintContentView;

import com.android.printspooler.widget.EmbeddedContentContainer;

import com.android.printspooler.widget.PrintContentView;

import com.android.printspooler.widget.PrintOptionsLayout;

import java.io.File;

    @Override

    public void setPadding(int left, int top, int right, int bottom) {

        WindowInsets winsets = mRecyclerView.getRootWindowInsets();

        if (winsets != null) {

            // The preview area has been pushed down to make space for the other settings content.

            // Insert enough padding to allow the user to scroll a multi-page document back up.

            Insets insets = winsets.getInsets(WindowInsets.Type.systemBars());

            bottom += insets.bottom + insets.top;

        }

        mRecyclerView.setPadding(left, top, right, bottom);

    }