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package com.mapswithme.maps.widget.recycler;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import com.google.android.flexbox.FlexLine;
import com.google.android.flexbox.FlexboxLayoutManager;
import java.util.List;
public class UgcRouteTagItemDecorator extends TagItemDecoration
{
private int mCurrentOffset;
public UgcRouteTagItemDecorator(@NonNull Drawable divider)
{
super(divider);
}
@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state)
{
super.getItemOffsets(outRect, view, parent, state);
if (hasSpaceFromRight(outRect, view, parent))
mCurrentOffset += view.getWidth() + outRect.left;
else
mCurrentOffset = 0;
outRect.left = mCurrentOffset == 0 ? 0 : getDivider().getIntrinsicWidth() / 2;
outRect.right = getDivider().getIntrinsicWidth() / 2;
FlexboxLayoutManager flexboxLayoutManager = (FlexboxLayoutManager) parent.getLayoutManager();
boolean isFirstLine = isFirstLineItem(view, parent, flexboxLayoutManager);
if (isFirstLine)
outRect.top = 0;
}
private static boolean isFirstLineItem(@NonNull View view, @NonNull RecyclerView parent,
@NonNull FlexboxLayoutManager layoutManager)
{
List<FlexLine> flexLines = layoutManager.getFlexLines();
if (flexLines == null || flexLines.isEmpty())
return true;
FlexLine flexLine = flexLines.iterator().next();
int position = parent.getLayoutManager().getPosition(view);
int itemCount = flexLine.getItemCount();
return position < itemCount;
}
private boolean hasSpaceFromRight(@NonNull Rect outRect, @NonNull View view,
@NonNull RecyclerView parent)
{
int padding = parent.getPaddingLeft() + parent.getRight();
return mCurrentOffset + view.getWidth() + outRect.left < parent.getWidth() - padding;
}
}
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